U.S. patent application number 15/523473 was filed with the patent office on 2017-11-02 for apparatus and method for manufacturing a smoking article pack.
The applicant listed for this patent is British American Tobacco (Investments) Limited. Invention is credited to Andrew BRAY, Gary FALLON, Kie Seon PARK.
Application Number | 20170313449 15/523473 |
Document ID | / |
Family ID | 52118547 |
Filed Date | 2017-11-02 |
United States Patent
Application |
20170313449 |
Kind Code |
A1 |
FALLON; Gary ; et
al. |
November 2, 2017 |
Apparatus and Method for Manufacturing a Smoking Article Pack
Abstract
A method of manufacturing a pack of smoking articles. The method
comprises providing a planar blank of an inner support frame
comprising a front panel and a rear panel connected by a bottom
panel, and folding the front and rear panels together about the
bottom panel to form an inner support frame in a receiving
configuration. In the receiving configuration, the front and rear
panels diverge in a direction away from the bottom panel and define
an opening remote from the bottom panel. The method includes
inserting a bundle of smoking articles through the opening into the
inner support frame and folding the front and rear panels together
about the bottom panel from the receiving configuration to an
enclosed configuration to enclose the bundle of smoking articles.
The method includes wrapping the bundle of smoking articles and
inner support frame with a film to form a sealed pack of smoking
articles. Also an apparatus for manufacturing a pack of smoking
articles according to such a method.
Inventors: |
FALLON; Gary; (London,
GB) ; BRAY; Andrew; (London, GB) ; PARK; Kie
Seon; (London, GB) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
British American Tobacco (Investments) Limited |
London |
|
GB |
|
|
Family ID: |
52118547 |
Appl. No.: |
15/523473 |
Filed: |
September 29, 2015 |
PCT Filed: |
September 29, 2015 |
PCT NO: |
PCT/GB2015/052829 |
371 Date: |
May 1, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B65B 11/004 20130101;
B65B 31/048 20130101; B65B 49/04 20130101; B65B 19/228 20130101;
B65D 85/1081 20130101; B65B 31/024 20130101; B65B 49/02 20130101;
B65D 85/1036 20130101; B65B 5/06 20130101; B65B 2220/18 20130101;
B65D 5/62 20130101; B65D 5/18 20130101; B65D 85/1018 20130101; B65B
19/226 20130101; B65D 5/4266 20130101; B65B 43/10 20130101; B65B
49/08 20130101; B65B 19/12 20130101; B65B 43/24 20130101; B65B
51/023 20130101; B65B 19/025 20130101; B31B 2241/003 20130101; B65B
31/00 20130101 |
International
Class: |
B65B 19/22 20060101
B65B019/22; B65D 85/10 20060101 B65D085/10; B65D 85/10 20060101
B65D085/10; B65D 5/62 20060101 B65D005/62; B65D 5/42 20060101
B65D005/42; B65D 5/18 20060101 B65D005/18; B65B 5/06 20060101
B65B005/06; B65B 49/02 20060101 B65B049/02; B65B 43/10 20060101
B65B043/10; B65B 31/00 20060101 B65B031/00; B65B 19/22 20060101
B65B019/22; B65B 19/12 20060101 B65B019/12; B65B 11/00 20060101
B65B011/00; B65B 51/02 20060101 B65B051/02; B65D 85/10 20060101
B65D085/10 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 31, 2014 |
GB |
1419462.5 |
Claims
1. A method of manufacturing a pack of smoking articles comprising
providing a planar blank of an inner support frame comprising a
front panel and a rear panel connected by a bottom panel, folding
the front and rear panels together about the bottom panel to form
an inner support frame in a receiving configuration, in which the
front and rear panels diverge in a direction away from the bottom
panel and define an opening remote from the bottom panel, inserting
a bundle of smoking articles through the opening into the inner
support frame, folding the front and rear panels together about the
bottom panel from the receiving configuration to an enclosed
configuration to enclose the bundle of smoking articles, and
wrapping the bundle of smoking articles and inner support frame
with a film to form a sealed pack of smoking articles.
2. A method according to claim 1 wherein at least one of the front
and rear panels includes side panels extending from lateral side
edges thereof either side of the bottom panel, the method including
folding the side panels relative to the front and/or rear panels to
form side panels of the inner support frame between the opening and
the bottom panel.
3. A method according to claim 1 wherein the front panel comprises
first side panels connected to its lateral side edges, and the rear
panel comprises second side panels connected to its lateral side
edges, the method including folding the first and second side
panels relative to the respective front and rear panels before
folding the front and rear panels together, such that the part of
the first side panels overlaps the second side panels in the
receiving configuration of the inner support frame.
4. (canceled)
5. A method according to claim 1 further comprising feeding the
inner support frame in the receiving configuration into a pocket of
an assembly wheel of a packaging apparatus, and inserting the
bundle of smoking articles into the inner support frame and folding
the inner support frame into the enclosed configuration within the
pocket.
6. A method according to claim 5 wherein the pocket of the assembly
wheel includes a plurality of walls, at least one wall comprising a
plate which is moveable to alter the size of the pocket, and
wherein the front and rear panels are folded together from the
receiving configuration to the enclosed configuration by movement
of the plate from a first position to a second position.
7. (canceled)
8. A method according to claim 5 wherein two opposing walls
defining the pocket of the assembly wheel comprise plates which are
moveable towards and away from each other to alter the size of the
pocket.
9. A method according to claim 6 wherein the assembly wheel
comprises an actuation mechanism operable to move the at least one
plate from the first position to the second position, and wherein
the assembly wheel is rotatable to move the pocket between a
plurality of pack assembly positions and wherein the actuation
mechanism is operated to move the at least one plate from the first
position to the second position upon rotation of the assembly wheel
from a first assembly position to a second assembly position.
10. (canceled)
11. A method according to claim 10 wherein the first assembly
position comprises an insertion position at which the bundle of
smoking articles is inserted into the inner support frame, and the
second assembly position comprises an ejection position at which
the bundle of smoking articles enclosed within the inner support
frame is ejected from the pocket.
12. A method according to claim 5 comprising retaining the inner
support frame within the pocket of the assembly wheel by suction
force.
13. A method according to claim 1 wherein the inner support frame
blank is folded such that the front and rear panels diverge by an
angle greater than 10 degrees in the receiving configuration.
14. (canceled)
15. An apparatus for manufacturing a pack of smoking articles
including a planar blank of an inner support frame comprising a
front panel and a rear panel connected by a bottom panel, the
apparatus comprising a folding station configured to fold the front
and rear panels together about the bottom panel to form an inner
support frame in a receiving configuration in which the front and
rear panels diverge away from the bottom panel and define an
opening remote from the bottom panel, an assembly apparatus
configured to receive the inner support frame in the receiving
configuration, and an insertion mechanism configured to insert a
bundle of smoking articles through the opening into the inner
support frame, a closing mechanism configured to fold the front and
rear panels together about the bottom panel from the receiving
configuration to an enclosed configuration to enclose the bundle of
smoking articles, and a wrapping station configured to wrap the
bundle of smoking articles and inner support frame with a film to
form a sealed pack of smoking articles.
16. An apparatus according to claim 15 configured to receive a
blank in which at least one of the front and rear panels includes
side panels extending from lateral side edges thereof either side
of the bottom panel, the folding station being configured to fold
the side panels relative to the front and/or rear panels to form
side panels of the inner support frame between the opening and the
bottom panel.
17. An apparatus according to claim 16 configured to receive a
blank in which the front panel comprises first side panels
connected to its lateral side edges, and the rear panel comprises
second side panels connected to its lateral side edges, the folding
station configured to fold the first and second side panels
relative to the respective front and rear panels before folding the
front and rear panels together, such that the part of the first
side panels overlaps the second side panels in the receiving
configuration of the inner support frame.
18. An apparatus according to claim 17 comprising an adhesive
applicator configured to apply adhesive to the first and/or second
side panels to bond the adjacent first and second side panels
together once the inner support frame is in the enclosed
position.
19. An apparatus according to claim 16, wherein the folding station
includes a folding mechanism, the folding mechanism comprising a
pair of spaced walls and a lifting arm moveable between a first and
a second position, the lifting arm configured to convey an inner
support frame blank between the spaced walls such that the side
panels are folded relative to the front panel by contact with the
spaced walls.
20. An apparatus according to claim 19 when dependent on claim 17,
wherein the spaced walls comprise guide portions having a contact
surface, and wherein, as the lifting arm conveys the inner support
frame blank between the spaced walls, the first side panels are
folded by contact with the spaced walls and the second side panels
are folded by contact with the contact faces of the guide
portions.
21. An apparatus according to claim 20 wherein the guide portions
are configured to fold the second side panels relative to the rear
panel by a greater angle than the first side panels are folded
relative to the front panel.
22. An apparatus according to claim 21 wherein the contact faces of
the guide portions extend inwardly beyond a respective inner face
of the spaced walls.
23. An apparatus according to claim 15 wherein the assembly
apparatus comprises an assembly wheel comprising a pocket
configured to receive the inner support frame in the receiving
configuration.
24. An apparatus according to claim 23 wherein the closing
mechanism is configured to fold the inner support frame into the
enclosed configuration within the pocket.
25. An apparatus according to claim 24 wherein the pocket of the
assembly wheel includes a plurality of walls and the closing
mechanism comprises at least one wall of the pocket comprising a
plate which is moveable between a first and a second position to
alter the size of the pocket.
26. An apparatus according to claim 25 wherein the at least one
plate is pivotable about one end of the plate between the first and
second positions.
27. An apparatus according to claim 25 wherein two opposing walls
defining the pocket of the assembly wheel comprise plates which are
moveable towards and away from each other to alter the size of the
pocket.
28. An apparatus according to claim 25 wherein the closing
mechanism comprises an actuation mechanism for moving the at least
one plate, and wherein the assembly wheel is rotatable to move the
pocket between a plurality of pack assembly positions, and wherein
the actuation mechanism is configured to move the at least one
plate from the first position to the second position upon rotation
of the assembly wheel from a first assembly position to a second
assembly position.
29. An apparatus according to claim 28 wherein the actuation
mechanism comprises a piston connected to the assembly wheel and to
the at least one plate.
30. An apparatus according to claim 25 wherein the assembly
apparatus includes a suction mechanism configured to retain the
inner support frame within the pocket by force of suction.
31.-32. (canceled)
33. An apparatus according to claim 15 wherein the wrapping station
comprises a vacuum mechanism configured to form the pack as sealed
contained with an at least partial vacuum within the container.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to an apparatus and method for
manufacturing a pack for smoking articles, particularly but not
exclusively, for manufacturing a wrapped pack including an inner
support frame around a bundle of smoking articles.
BACKGROUND
[0002] Packs for cigarettes or other smoking articles may comprise
a bundle of cigarettes in a generally rectangular parallelepiped
configuration, an inner frame of card across the front and side
faces of the bundle, and an outer wrapper of film or other barrier
material enclosing the bundle of cigarettes. Such packs may include
an access aperture for a user to remove cigarettes from the pack,
and a removable and re-sealable cover over the access aperture.
[0003] The inner frame provides a degree of support and mechanical
protection to the bundle of cigarettes during packaging, transport,
storage and use. However, problems exist with pack manufacturing
apparatuses and methods when inserting the cigarette bundle into
the inner frame, as precise alignment of the bundle and inner frame
may be required. Furthermore, the mechanical protection of the
cigarettes in such packs can be unsatisfactory.
[0004] The present invention seeks to provide an alternative
apparatus and method for manufacturing smoking article packs.
SUMMARY
[0005] According to embodiments of the present invention, there is
provided a method of manufacturing a pack of smoking articles
comprising providing a planar blank of an inner support frame
comprising a front panel and a rear panel connected by a bottom
panel, folding the front and rear panels together about the bottom
panel to form an inner support frame in a receiving configuration,
in which the front and rear panels diverge in a direction away from
the bottom panel and define an opening remote from the bottom
panel, inserting a bundle of smoking articles through the opening
into the inner support frame, folding the front and rear panels
together about the bottom panel from the receiving configuration to
an enclosed configuration to enclose the bundle of smoking
articles, and wrapping the bundle of smoking articles and inner
support frame with a film to form a sealed pack of smoking
articles.
[0006] At least one of the front and rear panels may include side
panels extending from lateral side edges thereof either side of the
bottom panel, and the method may include folding the side panels
relative to the front and/or rear panels to form side panels of the
inner support frame between the opening and the bottom panel.
[0007] The front panel may comprise first side panels connected to
its lateral side edges, and the rear panel may comprise second side
panels connected to its lateral side edges, and the method may
include folding the first and second side panels relative to the
respective front and rear panels before folding the front and rear
panels together, such that the part of the first side panels
overlaps the second side panels in the receiving configuration of
the inner support frame.
[0008] The method may comprise applying adhesive to the first
and/or second side panels to bond the adjacent first and second
panels together once the inner support frame is in the enclosed
position.
[0009] The method may further comprise feeding the inner support
frame in the receiving configuration into a pocket of an assembly
wheel of a packaging apparatus, and inserting the bundle of smoking
articles into the inner support frame and folding the inner support
frame into the enclosed configuration within the pocket.
[0010] The assembly wheel may include a plurality of walls, at
least one wall comprising a plate which is moveable to alter the
size of the pocket, and wherein the front and rear panels may be
folded together from the receiving configuration to the enclosed
configuration by movement of the plate from a first position to a
second position.
[0011] The at least one plate may be pivotable about one end of the
plate between the first and second positions.
[0012] Two opposing walls defining the pocket of the assembly wheel
may comprise plates which are moveable towards and away from each
other to alter the size of the pocket.
[0013] The assembly wheel may comprise an actuation mechanism
operable to move the at least one plate from the first position to
the second position.
[0014] The assembly wheel may be rotatable to move the pocket
between a plurality of pack assembly positions and the actuation
mechanism may be operated to move the at least one plate from the
first position to the second position upon rotation of the assembly
wheel from a first assembly position to a second assembly
position.
[0015] The first assembly position may comprise an insertion
position at which the bundle of smoking articles is inserted into
the inner support frame, and the second assembly position may
comprise an ejection position at which the bundle of smoking
articles enclosed within the inner support frame is ejected from
the pocket.
[0016] The method may comprise retaining the inner support frame
within the pocket of the assembly wheel by suction force.
[0017] The inner support frame blank may be folded such that the
front and rear panels diverge by an angle greater than 10 degrees
in the receiving configuration.
[0018] The method may comprise cutting the planar blank for the
inner support frame from a continuous web of material.
[0019] The present invention also provides an apparatus for
manufacturing a pack of smoking articles including a planar blank
of an inner support frame comprising a front panel and a rear panel
connected by a bottom panel, the apparatus comprising a folding
station configured to fold the front and rear panels together about
the bottom panel to form an inner support frame in a receiving
configuration in which the front and rear panels diverge away from
the bottom panel and define an opening remote from the bottom
panel, an assembly apparatus configured to receive the inner
support frame in the receiving configuration, and an insertion
mechanism configured to insert a bundle of smoking articles through
the opening into the inner support frame, a closing mechanism
configured to fold the front and rear panels together about the
bottom panel from the receiving configuration to an enclosed
configuration to enclose the bundle of smoking articles, and a
wrapping station configured to wrap the bundle of smoking articles
and inner support frame with a film to form a sealed pack of
smoking articles.
[0020] The apparatus may be configured to receive a blank in which
at least one of the front and rear panels includes side panels
extending from lateral side edges thereof either side of the bottom
panel, and the folding station may be configured to fold the side
panels relative to the front and/or rear panels to form side panels
of the inner support frame between the opening and the bottom
panel.
[0021] The apparatus may be configured to receive a blank in which
the front panel comprises first side panels connected to its
lateral side edges, and the rear panel may comprise second side
panels connected to its lateral side edges, and the folding station
may be configured to fold the first and second side panels relative
to the respective front and rear panels before folding the front
and rear panels together, such that the part of the first side
panels overlaps the second side panels in the receiving
configuration of the inner support frame.
[0022] The apparatus may comprise an adhesive applicator configured
to apply adhesive to the first and/or second side panels to bond
the adjacent first and second side panels together once the inner
support frame is in the enclosed position.
[0023] The folding station may include a folding mechanism, and the
folding mechanism may comprise a pair of spaced walls and a lifting
arm moveable between a first and a second position, the lifting arm
configured to convey an inner support frame blank between the
spaced walls such that the side panels are folded relative to the
front panel by contact with the spaced walls.
[0024] The spaced walls may comprise guide portions having a
contact surface and, as the lifting arm conveys the inner support
frame blank between the spaced walls, the first side panels may be
folded by contact with the spaced walls and the second side panels
may be folded by contact with the contact faces of the guide
portions.
[0025] The guide portions may be configured to fold the second side
panels relative to the rear panel by a greater angle than the first
side panels are folded relative to the front panel.
[0026] The contact faces of the guide portions may extend inwardly
beyond a respective inner face of the spaced walls.
[0027] The assembly apparatus may comprise an assembly wheel
comprising a pocket configured to receive the inner support frame
in the receiving configuration.
[0028] The closing mechanism may be configured to fold the inner
support frame into the enclosed configuration within the
pocket.
[0029] The pocket of the assembly wheel may include a plurality of
walls and the closing mechanism may comprise at least one wall of
the pocket comprising a plate which is moveable between a first and
a second position to alter the size of the pocket.
[0030] The at least one plate may be pivotable about one end of the
plate between the first and second positions.
[0031] Two opposing walls defining the pocket of the assembly wheel
may comprise plates which are moveable towards and away from each
other to alter the size of the pocket.
[0032] The closing mechanism may comprise an actuation mechanism
for moving the at least one plate, and the assembly wheel may be
rotatable to move the pocket between a plurality of pack assembly
positions, and the actuation mechanism may be configured to move
the at least one plate from the first position to the second
position upon rotation of the assembly wheel from a first assembly
position to a second assembly position.
[0033] The actuation mechanism may comprise a piston connected to
the assembly wheel and to the at least one plate.
[0034] The assembly apparatus may include a suction mechanism
configured to retain the inner support frame within the pocket by
force of suction.
[0035] The suction mechanism may comprises one or more suction
holes formed in at least one wall of the pocket and fluidly
connected to a vacuum source.
[0036] The apparatus may comprise a cutting station configured to
receive a continuous web of material and to cut the planar blank
for the inner support frame from the continuous web of
material.
[0037] The wrapping station may comprise a vacuum mechanism
configured to form the pack as a sealed contained with an at least
partial vacuum within the container.
BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Embodiments of the invention will now be described, by way
of example only, with reference to the accompanying drawings, in
which:
[0039] FIG. 1 shows a front perspective view of a pack of smoking
articles, with a section of the outer wrap cut-away, manufactured
in accordance with an apparatus and method of a first embodiment of
the invention;
[0040] FIG. 2 shows a bundle of smoking articles and an inner frame
of the pack shown in FIG. 1;
[0041] FIG. 3 shows a rear perspective view of the bundle of
smoking articles and inner frame of FIG. 2;
[0042] FIG. 4 shows a blank for the inner frame shown in FIGS. 2
and 3;
[0043] FIG. 5 shows a schematic sequence of steps of a process for
manufacturing the pack of FIG. 1;
[0044] FIGS. 6A to 6C show a schematic sequence of folding steps of
an inner frame blank as part of the process of FIG. 5;
[0045] FIG. 7 shows part of a smoking article pack manufacturing
apparatus of a first embodiment of the invention;
[0046] FIG. 8 shows part of a smoking article pack manufacturing
apparatus of a second embodiment of the invention;
[0047] FIGS. 9a to 9f show sequential folding steps of an inner
frame blank by a first embodiment of a folding mechanism of a
manufacturing apparatus of an embodiment of the invention; and
[0048] FIGS. 10a to 10c show sequential folding steps of an inner
frame blank by a second embodiment of a folding mechanism of a
manufacturing apparatus of an embodiment of the invention.
DETAILED DESCRIPTION
[0049] FIG. 1 shows a pack 1 of smoking articles 2 manufactured
using an apparatus and method for manufacture of an embodiment of
the invention. (For the purposes of brevity of the description,
smoking articles 2 will hereafter be referred to as "cigarettes
2").
[0050] The pack 1 comprises a generally cuboidal bundle of
cigarettes 2 and an inner support frame 3 (referred to hereafter as
"inner frame 3") extending around the bundle of cigarettes 2. The
pack 1 comprises parallel front and rear faces 1a, 1b, which are
the largest faces of the pack. Parallel elongate side faces 1c, 1d
extend between the front and rear faces 1a, 1b on opposite sides of
the pack 1. Parallel top and bottom faces 1e, 1f extend between the
front and rear faces 1a, 1b, and side faces 1c, 1d of the pack 1
and comprise the smallest faces of the pack 1.
[0051] The inner frame 3 extends over the cigarette bundle on at
least part of the front, rear, side and bottom faces 1a-1e of the
pack 1. The inner frame 3 is formed from a single-piece flat blank
of card 3', as shown in FIG. 4. The blank 3' comprises a number of
connected panels separated by fold lines 4. The fold lines 4 are
lines of weakening formed in the blank 3' and are shown in dashed
lines in FIG. 4. The blank 3' may be cut from a continuous web 5 of
card by a cutting machine (not shown). The cutting machine may also
provide the fold lines 4 by an embossing tool, creasing knife or
scoring blade.
[0052] The blank 3' comprises a bottom panel 3e connected between a
front panel 3a and a rear panel 3b. First side panels 3c, 3d extend
from side edges of the front panel 3a. Second side panels 3g, 3h
extend from side edges of the rear panel 3b. Top flaps 3f extend
from an end edge of each of the outer side panels 3c, 3d remote
from the bottom panel 3e. Hereafter, the first side panels 3c, 3d
are referred to as outer side panels 3c, 3d, and the second side
panels 3g, 3h are referred to as inner side panels 3g, 3h. However,
it should be understood that the invention is not intended to be
limited to the relative position of the first and second side
panels 3c, 3d, 3g, 3h in the inner frame 3 within the pack 1.
[0053] In the pack 1, the front and rear panels 3a, 3b extend
across the cigarette bundle in the front and rear faces 1a, 1b. The
bottom panel 3e extends across the bottom ends of the cigarettes 2
at the bottom face 1e of the pack 1. The inner side panels 3g, 3h
extend across the sides of the cigarette bundle at the side faces
1c, 1d of the pack, and the outer side panels 3c, 3d extend across
and in contact with the inner side panels 3g, 3h. The top flaps 3f
are folded down to extend across the tops of the cigarettes 2 at
the sides of the top face 1f of the pack 1.
[0054] FIG. 5 shows a sequential schematic view of a method and
apparatus for manufacturing a pack 1 of cigarettes, according to an
embodiment of the invention. A continuous web 5 of card to form the
inner frame blanks 3' is supplied from a roll to a cutting station
6. The cutting station 6 cuts individual inner frame blanks 3' from
the web 6 and also forms the fold lines 4 as lines of weakening in
the blank 3'. The cutting station 6 may include a creasing knife to
form the lines of weakening in the blank 3'.
[0055] The blank 3' is then fed to a folding station 7 where the
blank 3' is folded into a receiving "clam-shell" configuration in
preparation for receiving a bundle of cigarettes 2 in a later stage
of the manufacturing process. The folding steps of the inner frame
blank 3' are shown in more detail in FIGS. 6A to 6C. The blank 3'
starts in the flat configuration shown in FIG. 6A. The outer side
panels 3c, 3d and the inner side panels 3g, 3h are folded by
approximately 90 degrees to extend approximately at right angles to
the front and rear panels 3a, 3b respectively, as shown in FIG. 6B.
The front and rear panels 3a, 3b are then folded towards each other
about the bottom panel 3e into the clam-shell receiving
configuration shown in FIG. 6C. The front panel 3a of the blank 3'
is slightly wider than the rear panel 3b. This is shown in FIG. 4
by dimension `a` being slightly greater than dimension `b`. This
enables the blank 3' to be accurately folded into the receiving
configuration, with the inner side panels 3g, 3h sitting inside the
outer side panels 3c, 3d. This helps prevent the inner and outer
side panels 3c, 3d, 3g, 3h abutting during the folding of the blank
3'.
[0056] In the receiving configuration of the folded blank 3', the
front and rear panels 3a, 3b are not parallel to each other but
diverge away from the bottom panel 3e. The front and rear panels
3a, 3b may extend at an angle .theta. relative to each other by
around 10 to 20 degrees. This divergence provides a wider opening 8
opposite the bottom panel 3e (see FIGS. 6C and 7) for insertion of
a cigarette bundle in a later manufacturing step described below.
This provides a tolerance to compensate for blank 3'/cigarette
bundle misalignment in the manufacturing process. This means that
manufacturing jams are avoided, the machinery requires less precise
calibration which allows for more cost-efficient machinery. Also,
higher-speed of manufacture is achievable.
[0057] In addition to the above, in the receiving configuration of
the folded blank 3', the edge of each outer side panel 3c, 3d
proximate the bottom panel 3e overlies the respective edge of the
inner side panel 3g, 3h proximate the bottom panel 3e. Although the
outer and inner side panels 3c, 3d, 3g, 3h do not entirely overlap,
their adjacent edges overlapping is sufficient to ensure that when
the inner frame blank 3' is closed around a cigarette bundle in a
subsequent manufacturing process (described below), the outer and
inner side panels 3c, 3d, 3g, 3h slide over each other and do not
abut or snag on each other.
[0058] An exemplary folding mechanism 23 of the folding station 7
of the invention is shown in FIGS. 9a to 9f. These figures
illustrate the sequential steps of the folding mechanism 23 folding
the inner fame blank 3' from the planar configuration as shown in
FIG. 4, to the receiving configuration shown in FIG. 6C. The
folding mechanism 23 comprises a pair of spaced parallel walls 24.
A lifting arm 25 is disposed between the parallel walls 24. The
lifting arm 25 is pivotable between a first, horizontal position
(shown in FIGS. 9a and 9b) and a second, vertical position (shown
in FIGS. 9e and 9f). In the horizontal position, an upper face 26
of the lifting arm is disposed slightly lower than a lower edge 27
of the parallel walls 24. A planar inner frame blank 3' may thereby
be received on the upper face 26 of the lifting arm 25 and lie
beneath the lower edges 27 of the parallel walls 24. This
configuration of the planar inner frame blank 3' lying between the
lifting arm 25 and the parallel walls 24 is shown in FIG. 9b.
[0059] The folding mechanism 23 includes guide portions 28. One
guide portion 28 is disposed on an upper portion of each of the
parallel walls 24. The guide portions 28 each include a sloping
contact face 29 that extends from proximate an outer face 30 of the
respective parallel wall 24 to a position inwardly of an inner face
31 of the respective parallel wall 24.
[0060] The upper face 26 of the lifting arm 25 includes a plurality
of suction ports 32 (only one is shown, in FIG. 9a). The suction
ports 32 are connected to a vacuum source (not shown). A cross bar
33 extends between the parallel walls 24 at an upper portion of the
parallel walls 24. A pusher rod 34 is disposed proximate the cross
bar 33 and is vertically moveable in a direction shown by arrow 35
in FIG. 9f.
[0061] In operation of the folding mechanism 23, the lifting arm 25
is initially in the horizontal position shown in FIG. 9a. A flat
inner frame blank 3' is fed to the folding mechanism 23 is located
on the lifting arm 25 with the front panel 3a against the lifting
arm, as shown in FIG. 9b. The blank 3' is held in place on the
lifting arm 25 by force of suction from the suction ports 32.
[0062] The lifting arm then pivots upwards towards the vertical
position. The parallel walls 24 are spaced apart by a distance
equal to or slightly greater than the width "a" of the front panel
3a of the blank 3'. The outer side panels 3c, 3d abut a lower edge
27 of the respective parallel wall 24 and are caused to be folded
inwards by around 90 degrees as the lifting arm 25 moves towards
the vertical position. This is shown in FIG. 9c.
[0063] As the lifting arm 25 continues to pivot towards the
vertical position, the inner side panels 3g, 3h come into contact
with a respective guide portion 28. The contact face 29 of each
guide portion 28 causes the inner side panels 3g, 3h to be folded
inwards. This is shown in FIG. 9d, and the folded blank 3'
configuration at this point is shown in FIG. 6b. Since the contact
faces 29 extend inwardly of the respective inner face 31 of the
parallel walls 24, the inner side panels are folded by slightly
more than 90 degrees from the starting flat blank position.
[0064] As the lifting arm 25 reaches the vertical position, as
shown in FIG. 9e, the bottom panel 3e of the blank 3' abuts the
cross bar 33 and causes the bottom panel 3e and the connected rear
panel 3b and inner side panels 3g, 3h to be folded by around 90
degrees relative to the front panel.
[0065] Finally, the pusher rod 34 moves downwards in the direction
shown by arrow 35. The pusher rod 34 contacts the rear face 3b of
the inner frame blank 3' and folds the rear panel 3b and connected
inner side panels 3g, 3h relative to the bottom panel 3e. This is
shown in FIG. 9f. The inner frame blank 3' is thereby folded into
the receiving configuration. During this last folding step, since
the inner side panels 3g, 3h had previously been folded inwards
more than the outer side panels 3c, 3d, the inner side 3o panels
3g, 3h locate inside the outer side panels 3c, 3d (as shown in
FIGS. 9f and 6C) and do not abut the edges of the outer side panels
3c, 3d.
[0066] Once the folded blank 3' is formed as described above into
the receiving configuration, it is then fed into a pocket 9 of an
assembly wheel 10 of a packaging apparatus. This may be achieved by
a pusher arm (not shown) elevating the folded blank 3' in the
receiving configuration into the pocket 9. In an embodiment of the
invention, the cross bar 33 may be moveable to allow the inner
frame blank to be conveyed into the pocket of the assembly wheel
10. The cross-bar may be moveable out of the way of a pusher arm,
or may be moveable with or connected to a pusher arm which conveys
the blank 3' into the pocket 9. Alternatively, the folding
mechanism 23 may be configured such that the lifting arm 25 is
positioned behind or off-set from the cross bar 33 when in the
vertical position, although still between the parallel walls 24,
such the vertical path for the folded blank 3' to be lifted into
the pocket 9 is not obstructed by the cross bar 33. That is, the
folded blank 3' is clear of the cross bar 33 when the lifting arm
25 is in the vertical position.
[0067] The assembly wheel 10 is shown in more detail in FIG. 7 and
includes four pockets 9 disposed radially at 90 degree spacing
around the circumference of the assembly wheel 10. Each pocket 9
comprises a recess in the assembly wheel 10. Two opposing walls of
each pocket 9 are defined by moveable plates 11. The plates 11 are
part of a pocket closing mechanism which includes actuators 12
connected to the plates 11 and configured to enable the plates 11
to be moved towards and away from each other to alter the size of
the pocket 9. The plates 11 include suction holes 18 fluidly
connected to a source of vacuum `V`.
[0068] The folded blank 3' is fed into the pocket 9 at a first
position P1 of the assembly wheel 10. In the first position P1,
when the folded blank 3' is fed into the pocket 9, the moveable
plates 11 are disposed in a first position in which they are spaced
apart to accommodate the folded blank 3' in its clam-shell,
receiving configuration with the front and rear panels 3a, 3b
divergent at an angle .theta. relative to each other. That is, the
moveable plates 11 are similarly divergent in the first position P1
of the assembly wheel 10. In the first position of the plates 11,
the pocket 9 is a generally truncated or frusto-triangular prism in
shape. The folded blank 3' is retained within the pocket 9 by
suction, as the vacuum from the vacuum source V acts upon the front
and rear panels 3a, 3b of the blank 3' via the suction holes 18. It
should be noted that the folded blank 3' is shown spaced from the
plates 11 in FIG. 7 only for ease and clarity of illustration. In
operation, the folded blank 3' would be held against the plates
11.
[0069] The assembly wheel 10 then rotates 90 degrees to a second
position P2. The following pocket 9 thereby moves into the first
position P1 to be aligned to receive a subsequent folded blank
3'.
[0070] Once the pocket 9 has rotated through 90 degrees into the
second position P2, a pre-formed cuboidal bundle of cigarettes 2 is
inserted through the opening 8 and into the folded blank 3'. The
assembly wheel 10 then rotates through a further 90 degrees into a
third position P3. During, or at the end of, this rotation, the
actuators 12 move the plates 11 towards each other into a second
position, to close the clam-shell inner frame blank 3' from the
receiving configuration into an enclosed configuration. The blank
3' thereby closes about the cigarette bundle to form the inner
frame 3. The top flaps 3f are also folded down flat across the top
of the cigarette bundle. This may be achieved by curved walls (not
shown) extending around the assembly wheel 10 between the second
position P2 and third position P3. The top flaps 3f may lie against
the curved walls which are shaped so that the top flaps 3f are
folded flat against the top of the cigarette bundle once the pocket
9 reaches the third position P3. The bundle of cigarettes 2 is
thereby enclosed within the formed inner frame 3. With the plates
11 in the second position, the pocket 9 is generally cuboidal in
shape.
[0071] The assembly wheel 10 rotates again through 90 degrees to a
fourth position P4 and a pusher arm 13 ejects the cigarette bundle
with inner frame 3 out of the pocket 9. The cigarette bundle with
inner frame 3 is pushed into a section of packaging film 14 which
is fed to lie adjacent the opening of the pocket 9. The cigarette
bundle with inner frame 3 and the film 14 are fed to a wrapping
station 17 which wraps and seals a section of the film 14 around
the cigarette bundle and inner frame 3 to form a pack 1 as shown in
FIG. 1. As shown in FIG. 1, the pack 1 is wrapped with fin seals
along its elongate side faces 1c, 1d and comprises an airtight
sealed pack 1.
[0072] The film 14 is fed from a continuous web with preformed cuts
to define access apertures which are covered by label 15. The film
14 is positioned such that when wrapped around the cigarette bundle
and inner frame 3, the label 15 and access aperture extend over the
top and front faces 1f, 1a of the pack 1, and are aligned with the
recess 16 in the inner frame 3.
[0073] The pack 1 may then proceed to a further packaging station
(not shown) to be enclosed within an outer card pack in a further
packaging process. For example, the pack 1 may be provided within a
card hinged lid box. The box may be further wrapped in an outer
film in a known packaging process.
[0074] In an embodiment of the present invention, a vacuum may be
applied to the interior of the pack 1 as part of the wrapping and
sealing process, or subsequently to the wrapping and sealing
process. This may provide at least a partial vacuum within the
sealed pack 1 which may help preserve the flavour and freshness of
the cigarettes. The at least partial vacuum can be created by
evacuating at least some of the air from the enclosure. This
partial vacuum may be provided by performing at least part of the
pack wrapping and sealing process in a low-pressure environment.
Alternatively, the pack 1 may be provided with a one-way valve and
a vacuum may be applied to the valve after wrapping and sealing the
pack 1 to evacuate at least some of the air from within the pack 1.
The pack 1 may be sufficiently sealed to allow low pressure to be
maintained within the pack 1 until the pack 1 is opened. The film
14 material may therefore be impermeable to air, and the pack 1 may
be hermetically sealed.
[0075] In the above-described embodiment in which the interior of
the pack 1 is provided with a partial vacuum, the inner frame 3
extending around the both the front and rear faces 1a, 1b, as well
as the side faces 1c, 1d of the pack 1 provides reinforcement over
at least part of all four sides of the entire perimeter of the
cigarette bundle. This supports the film 14 and prevents the inward
force acting on the film 14 from compressing, crushing or otherwise
mechanically deforming the cigarettes 2 along their long sides.
[0076] Further to the above, the inner frame 3 also includes the
bottom panel 3e and the top flaps 3f which extend at least
partially across the ends of the cigarettes in the bundle. The
bottom panel 3e and top flaps 3f further support the film 14 to
help prevent the inward force acting on the film 14 from
compressing, crushing or otherwise mechanically deforming the
cigarettes 2 at their ends in a longitudinal buckling
direction.
[0077] A recess 16 is provided in the front panel 3a of the inner
frame blank 3'. This recess 16 is aligned with the access aperture
covered by the label 15 of the pack 1. Therefore, when the label 15
is peeled back the access aperture, the recess 16 facilitates
access to the cigarettes 2 within the pack 1.
[0078] The inner frame 3 is made from a rigid or semi-rigid
material that has sufficient strength to mechanically protect the
cigarettes within the pack 1 from mechanical damage, as described
above. For example, the inner frame 3 may comprise card, multiple
layers of card, plastics, or other suitable material. The material
of the inner frame 3 may be card of between 150 grams per square
meter and 300 grams per square meter. The card may be coated or
laminated, for example with a polymer, or tin or aluminium foil.
The laminate may provide barrier properties and prevent the card
from absorbing substances that may be present within the cigarettes
2.
[0079] In an embodiment of the invention, the inner frame blank 3'
may be provided with adhesive to adhere the outer and inner side
panels 3c, 3d, 3g, 3h together once in the closed and assembled
state. FIG. 7 shows the apparatus of the invention including an
adhesive station for providing such adhesive. The adhesive station
comprises a reservoir 19 of adhesive, connected to a nozzle 20. The
adhesive station is configured such that adhesive 21 may be applied
from the nozzle 20 from the reservoir 19 to the inner side panel
3g, 3h of the blank 3'. The adhesive station is configured to apply
the adhesive 21 as the blank 3' is disposed within the pocket 9 of
the assembly wheel 10. However, the apparatus of the invention is
not intended to be limited to such a configuration of adhesive
station. The adhesive may be alternatively be applied at an
adhesive station as part of the cutting station 6 or as part of the
folding station 7. Alternatively, the adhesive may be applied to
the blank 3' at an adhesive station after the blank 3' is formed at
the cutting station 6. Yet further, the adhesive may be applied to
the web 5 at an adhesive station before the web 5 is cut into
blanks 3' at the cutting station 6. The adhesive may help the inner
frame 3 retain its shape. The adhered outer and inner side panels
3c, 3d, 3g, 3h may help increase the structural rigidity of the
inner frame 3.
[0080] The folding mechanism shown in FIGS. 9a to 9f is configured
to fold the inner side panels 3g, 3h inwards by a greater angle
that the angle by which the outer side panels 3c 3d are folded
inwards. This is achieved using the guide portions 28 with contact
faces 29 that extend inwardly of the respective inner face 31 of
the parallel walls 24. The rear panel 3b of the blank 3' is able to
pass between the guide portion 28 as its width "b" is less than the
width "a" of the front panel 3a. In use, the rear panel 3b may also
deform slightly to pass between the guide portions 28.
[0081] An alternative second embodiment of a folding mechanism 123
is provided according to the invention, and is shown in FIGS. 10a
to 10c. The second embodiment of folding mechanism 123 is similar
to the first embodiment of folding mechanism 23 and like features
retain the same reference numerals and detailed description thereof
will not be repeated. FIGS. 10a to 10c showing the second
embodiment of folding mechanism 123 are analogous to FIGS. 9d to 9f
showing the first embodiment of folding mechanism 23.
[0082] As with the first embodiment of folding mechanism 23, the
second embodiment of folding mechanism 123 includes guide portions
128 having a sloping contact face 129 that extends from proximate
an outer face 30 of the respective parallel wall 24. However, the
contact faces 129 extend to a position flush with the inner face 31
of the respective parallel wall 24.
[0083] In addition to the above, the guide portions 128 comprise
primary guide portions 128, and the folding mechanism 123 includes
secondary guide portions 130, one disposed on an upper portion of
each of the parallel walls 24 between a respective primary guide
portion 128 and the cross bar 33. The secondary guide portions 130
each include a sloping contact face 131 that extends inwardly of
the inner face 31 of the respective parallel wall 24.
[0084] Operation of the second embodiment of folding mechanism 123
is the same as that of the first embodiment over the initial steps
shown in FIGS. 9a to 9c. After the outer side panels 3c, 3d have
been folded inwards by the parallel walls 24, the lifting arm 25
continues to pivot towards the vertical position and the inner side
panels 3g, 3h come into contact with a respective primary guide
portions 128 and are folded inwards as shown in Figure boa. As the
contact faces 129 of the primary guide portions 128 are level with
the inner face 31 of the respective parallel wall 24, the inner
side panels are folded by around 90 degrees from the starting flat
blank position. Also, the rear panel 3b of the blank 3' easily
passes between the primary guide portions 128.
[0085] As the lifting arm 25 reaches the vertical position, as
shown in Figure bob, the inner side panels 3g, 3h pass over and
clear the secondary guide portions 130. The bottom panel 3e of the
blank 3' abuts the cross bar 33 and causes the bottom panel 3e and
the connected rear panel 3b and inner side panels 3g, 3h to be
folded by around 90 degrees relative to the front panel.
[0086] Finally, the pusher rod 34 moves downwards in the direction
shown by arrow 35. The pusher rod 34 contacts the rear face 3b of
the inner frame blank 3' and folds the rear panel 3b and connected
inner side panels 3g, 3h relative to the bottom panel 3e. This is
shown in FIG. 10c. The inner frame blank 3' is thereby folded into
the receiving configuration. During this last folding step, the
inner side panels 3g, 3h contact the with the contact faces 131 of
the secondary guide portions 130. Since the since contact faces 131
of the secondary guide portions 130 extend inwardly of the inner
face 30 of the respective parallel wall 24, the inner side panels
3g, 3h are folded further inwards, to a position in which they are
inwardly folded by more than the outer side panels 3c, 3d. The
inner side panels 3g, 3h are thereby able to locate inside the
outer side panels 3c, 3d (as shown in FIGS. 10c and 6C) and do not
abut the edges of the outer side panels 3c, 3d. Thereafter, the
blank 3' in the receiving configuration is conveyed to the pocket 9
of the assembly wheel 10, 110 for the further pack manufacturing
steps as described previously. It will be appreciated that in both
the exemplary first and second embodiments of the folding mechanism
23, 123, guide portions 28, 130 fold the inner side panels 3g, 3h
inwardly, and are folded inwardly further than the outer side
panels are folded inwards.
[0087] The assembly wheel 10 of the apparatus of the invention
shown in FIG. 7 and described above comprises pockets 9 with two
opposite walls of the pocket comprising moveable plates 11.
However, the invention is not intended to be limited to this
particular configuration of pocket and the pockets may comprise
only one moveable plate 11 with the opposite wall of the pocket
comprising a fixed wall. Such an alternative, second embodiment of
the invention is shown in FIG. 8 which comprises an assembly wheel
no. The assembly wheel no of the second embodiment of the invention
is similar to that of the first embodiment and like features retain
the same reference numerals and detailed description of like
features will not be repeated. A difference of the assembly wheel
no of the second embodiment is that the pockets 9 comprise one wall
comprising a moveable plate 11 and an opposite wall 22 as a fixed
element. The fixed wall 22 extends substantially parallel to the
moveable plate 11 when the plate is in the second position for
enclosing the inner support frame 3 about the cigarette bundle. As
with the first embodiment, both the fixed walls 22 and the moveable
plates 11 include suction holes 18 connected to a vacuum source V
to hold the blanks 3' in place within the pockets 9. Operation of
the apparatus of the invention including the second embodiment of
assembly wheel no is the same as that described previously with the
first embodiment of the invention, except that only the one
moveable plate 11 of each pocket 9 moves to fold the blank 3'
around the cigarette bundle from the receiving configuration to the
enclosed configuration.
[0088] The moveable walls 11 of the pockets 9 of the assembly
wheels 10, no are shown in FIGS. 7 and 8, and described above, as
being pivotable between the first and second positions. However,
the invention is not intended to be limited to this particular
configuration of moveable plate 11. In alternative embodiment, the
moveable plates 11 may be otherwise moveable between the first and
second positions, for example by translation, such as by sliding.
However, an advantage of a pivoting movement of the moveable plates
11 is that the closing mechanism of the assembly wheel is
relatively simple, and also that the pivoting of the plates 11
mirrors the folding of the blank 3' such that the change in shape
of the pocket 9 follows the change in shape of the blank 3' from
the receiving configuration to the enclosed configuration.
[0089] The plates 11 are shown in FIGS. 7 and 8, and described
above, as being moved by actuators 12. The actuators may comprise
pistons, such as hydraulic or pneumatic pistons within the scope of
the invention. However, the invention is not intended to be limited
to this particular configuration of actuator. In alternative
embodiments, different types of actuation mechanism may be used in
place of the actuators to move the plates 11. For example, the
actuation mechanism may comprise electric motors coupled to a gear
mechanism. The actuation mechanism may alternatively comprise one
of a cam surface or cam follower on a portion of the plate, and the
other of a cam surface or cam follower on a portion of the
apparatus relative to which the assembly wheel 10, 110 rotates.
Movement of the plates 11 may thereby be actuated by the cam
follower travelling along the cam surface as the assembly wheel 10,
110 rotates from the second position P2 to the third position
P3.
[0090] The apparatuses of the invention shown in FIGS. 7 and 8, and
described above comprise an assembly wheel 10, 110. However, the
invention is not intended to be limited to an apparatus comprising
an assembly wheel and other forms of assembly apparatus may be used
in place of an assembly wheel. For example, an assembly apparatus
may comprise an assembly belt and a plurality of pockets may be
formed on the assembly belt. The assembly belt pockets may receive
the inner support frame blanks in the receiving configuration and
the cigarette bundles and enclose the cigarette bundles in the
inner support frame as described above. In a yet further
alternative, the assembly apparatus may comprise a plurality of
pockets formed in an alternative conveyance mechanism, such as a
linearly moveable conveyor.
[0091] In the apparatuses and methods of the invention described
above, the inner frame blank 3' includes first and second pairs of
side panels 3c, 3d, 3g, 3h. However, the invention is not limited
to use of this configuration of inner frame blank and the blank 3'
may only comprise one pair of side panels extending from either the
front panel 3a or the rear panel 3b. Such a configuration would
still provide protection to the side faces 1c, 1d of the pack 1.
However, within the scope of the invention, the side panels may be
omitted entirely and the method and apparatus may comprise forming
the pack 1 with an inner frame only including a front panel 3a and
a rear panel 3b connected by a bottom panel 3e.
[0092] In the methods and operation of the apparatuses of the
invention described above, the front and rear panels 3a, 3b are
described as being folded towards each other about the bottom panel
3e. That is, the front panel 3a is folded relative to the bottom
panel 3e about the fold line 4 between the front panel 3a and the
bottom panel 3e. Also, the rear panel 3b is folded relative to the
bottom panel 3e about the fold line 4 between the rear panel 3b and
the bottom panel 3e. However, it should be appreciated that such a
folding process of the invention is not limited to the front and
rear panels 3a, 3b both being manipulated relative to a stationary
bottom panel 3e. The method is also intended to encompass the inner
frame blank 3' being folded by only the front panel 3a or the rear
panel 3b being manipulated relative to the other of the front panel
3a or rear panel 3b remaining stationary, so that the blank 3' is
folded into the receiving and/or enclosed configuration.
[0093] The pack manufacturing apparatuses of the invention shown
schematically in FIG. 5 and described above comprises a cutting
station 6 to receive a continuous web of material and form blank 3'
to be fed directly to the folding station 7. However, the invention
is not intended to be limited to this particular configuration of
apparatus. In an alternative embodiment, the blanks 3' may be
produced in a separate process and the pre-formed blanks 3' may
then be supplied to the folding station 7.
[0094] The blank 3' shown in FIG. 4 includes a stepped rear panel
3b and in which the inner side panels 3g, 3h do not extend to the
same height as the rear panel 3b. However, this is an exemplary
embodiment of inner frame blank only and in a variant, the rear
panel 3b and inner side panels 3g, 3h may together form a
rectangular shape. That is, the rear panel 3b and inner side panels
3g, 3h may all be rectangles and the inner side panels 3g, 3h may
be of the same height as the rear panel 3b. The height may be
substantially the height of the pack 1 such that the rear and inner
side panels 3b, 3g, 3h substantially extend over the entire height
of the pack 1.
[0095] As used herein, the term "smoking article" includes
smokeable products such as cigarettes, cigars and cigarillos
whether based on tobacco, tobacco derivatives, expanded tobacco,
reconstituted tobacco or tobacco substitutes and also heat-not-burn
products and other nicotine delivery product such as aerosol
generation devices including e-cigarettes. The smoking article may
be provided with a filter for the gaseous flow drawn by the
smoker.
[0096] As used herein, the term "partial vacuum" means that
pressure has been reduced by removing at least a part of the gas
from within a space, for example the enclosure within the pack
1.
[0097] In order to address various issues and advance the art, the
entirety of this disclosure shows by way of illustration various
embodiments in which the claimed invention(s) may be practiced and
provide for superior smoking article pack and apparatus and method
of manufacture of such a smoking article pack. The advantages and
features of the disclosure are of a representative sample of
embodiments only, and are not exhaustive and/or exclusive. They are
presented only to assist in understanding and teach the claimed
features. It is to be understood that advantages, embodiments,
examples, functions, features, structures, and/or other aspects of
the disclosure are not to be considered limitations on the
disclosure as defined by the claims or limitations on equivalents
to the claims, and that other embodiments may be utilised and
modifications may be made without departing from the scope and/or
spirit of the disclosure. Various embodiments may suitably
comprise, consist of, or consist essentially of, various
combinations of the disclosed elements, components, features,
parts, steps, means, etc. In addition, the disclosure includes
other inventions not presently claimed, but which may be claimed in
future.
* * * * *