U.S. patent application number 10/829055 was filed with the patent office on 2004-10-07 for bagging machine to manufacture seal edged bags.
This patent application is currently assigned to Rovema Packaging Machines L.P.. Invention is credited to Baur, Walter, Kuss, Gerhard, Ohrisch, Rene.
Application Number | 20040194435 10/829055 |
Document ID | / |
Family ID | 7701729 |
Filed Date | 2004-10-07 |
United States Patent
Application |
20040194435 |
Kind Code |
A1 |
Kuss, Gerhard ; et
al. |
October 7, 2004 |
Bagging machine to manufacture seal edged bags
Abstract
Disclosed is a machine to manufacture (1) bags (10) with bottom
sealed edges, with a vertical bagging machine, without the film
track (3) running, it is suggested, to arrange the filling pipe of
the bagging machine (1) in such a manner, that the length of a
first track (21) of an interlocking (14) of the film deductions
(12, 20) over the outer surface (28) of the filling pipe (11) and
over form items (15) for the figuration of the edges (16) until
again to the interlocking (14) equal to a second distance (22) is,
runs on the other side of the interlocking (14). The number of form
items (15) per side is different thereby.
Inventors: |
Kuss, Gerhard; (Wetzlar,
DE) ; Ohrisch, Rene; (Pohlheim, DE) ; Baur,
Walter; (Grundau, DE) |
Correspondence
Address: |
WOMBLE CARLYLE SANDRIDGE & RICE, PLLC
P.O. BOX 7037
ATLANTA
GA
30357-0037
US
|
Assignee: |
Rovema Packaging Machines
L.P.
|
Family ID: |
7701729 |
Appl. No.: |
10/829055 |
Filed: |
April 21, 2004 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
10829055 |
Apr 21, 2004 |
|
|
|
10266860 |
Oct 8, 2002 |
|
|
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Current U.S.
Class: |
53/551 |
Current CPC
Class: |
B29C 53/50 20130101;
B65B 9/20 20130101; B65B 2220/12 20130101; B65B 9/2042 20130101;
B65B 9/2056 20130101 |
Class at
Publication: |
053/551 |
International
Class: |
B65B 009/06 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 8, 2001 |
DE |
101 49 476.9 |
Claims
What is claimed is:
1. Vertical bagging machine with a forming shoulder to transform a
film track to a film tube of a vertical seal device to seal the
film tube parallel to its transfer direction under production of a
vertical seal, comprising: a cross seal mechanism to seal the film
tube across from the transfer direction through cross seals of a
separating device to detach the bags from the film tube a filling
tube for optional filling of the bags, from two at the filling tube
facing film deductions, which limit the filling tube and frequented
moving in opposite directions to peel the film off the supply role
to transfer on the film tube, whereby the film end along an
interlocking which impacts against the filling tube, in order to
seize and move the film track downward between the vertical filling
tube and the film draw-off along an interlocking with frictional
engagement, also from the filling tube distance form items for the
formation of output-steered edges on the film tube as well as with
in each sealing element per forming element in feed direction the
form items are subordinate, in order to seal the edges, by the fact
characterized that at the horizontal cross section of the filing
tubes a first track by the interlocking at the first film end out
over the outer surface of the filling tubes up to the interlocking
at the second film end whereby a form item is rotated, if it is
present on this track directly or is approximately alike as a
second track which of the interlocking of the first film end goes
out and over the outer surface and over at least one form item to
the interlocking at the second film end is enough, and that the
number of form items of the two tracks is unequal.
2. Bagging machine according to claim 1, further including that
along the first track no form item is present and is intended along
the second track of two form items.
3. Bagging machine according to claim 2, further including a
parallel at a track to the effect straight line, which like the
effect straight line in the cross section is likewise situated that
the radius of curvature sets, the cross section interspersing
center line for the inner surface of an area of the filling tube at
the crossover of the effect straight line with perpendicularly to
it a running, and that the radius of curvature sets for the outer
surface of this area width unit at the intersection of the parallel
with the center line.
4. Bagging machine according to claim 3, further comprising the
area of the filling tube being located along the first track.
5. Bagging machine according to claim 4, further comprising the
area of the filling to be located along the first track and the
second track.
6. Bagging machine according to claim 1, further comprising a
guiding device accessing over the form items is intended, whereby
the edges run between the form items and the guiding device.
7. Bagging machine according to claim 3, further comprising that
the radius of curvature of the inner surface is smaller than the
radius of curvature of the outer surface of this area.
8. Bagging machine according to claim 3, further comprising that a
section of the filling tube running in a filling pipe of the
forming shoulder indicates an inner surface concentric to the outer
surface.
9. Bagging machine according to claim 1, further comprising the
filling tube being flatter for setting of the film ends.
Description
RELATED APPLICATION
[0001] This application is a nonprovisional application claiming
benefit of German Patent Application No. 101 49 476.9, filed Oct.
8, 2001, the content of which is hereby incorporated in its
entirety.
BACKGROUND
[0002] Vertical bagging machines include a forming shoulder to
transform a film track to a film tube, vertical sealing equipment
to seal the film tube parallel to its transport equipment under
production of a vertical seal, a cross seal mechanism to seal the
film tube cross to the feed direction by means of cross joints of a
separator to separate bags from the film tube, a filling tube for
optional filling of the bags, from two at the filling tube
oppositely facing, the filling tube limiting, moving in opposite
directions rotating film ends to take the film track off from a
supply role and to carry the film tube on, whereby the film ends
work along an interlocking against the filling tube, in order to
seize and move the film tube downward between the vertical filling
tube and the film ends with frictional engagement. At the filling
tube distant form items are intended for formation by
output-steered edges at the film tube. In each case a seal item is
subordinate a form item in feed direction, in order to seal the
edges. The sealed edges lead to bags with increased stability.
[0003] With a well-known bagging machine of this type the form
items are symmetrically arranged to the interlocking. Thus it is
ensured that the film track runs without problems over the form
items. A form item produces locally a relatively high resistance
for the carried on film tube. If two or four of such resistances
are intended, in order to manufacture bags with two or four sealed
edges, the film run is not disturbed, if the resistances are evenly
distributed over the film track. This is with the well-known state
of the art the case.
[0004] With the well-known bagging machine, it would thus come to a
so-called running of the film track, a uncorrected film run, which
would have to be corrected by a rule mechanism if the form items
were not symmetrically arranged to the interlocking. For a larger
bag variety it would be, however, desirable to arrange the form
items freely selectable at the filling tube in order for a
different number of form items on the two pages, which are
separated by the interlocking, implements to be able, without
needing this rule mechanism. This function is appropriate for the
invention to reason.
[0005] The function is in accordance with the characteristic part
of requirement 1. At the horizontal cross section of the filling
tube a first track of the interlocking at the first film deduction
is over the outer surface of the filling tube up to the
interlocking. A form item is rotated, if it is present on this
track. Directly or approximately equal as a second distance which
of the interlocking of the first film deduction goes out. This is
enough over the outer surface and over at least one form item to
the interlocking at the second film deduction. The numbers of form
items along the two tracks are unequal.
SUMMARY
[0006] The bagging machine according to the invention has the
advantage, that the form items can be freely selected and used in a
different number on the two pages, separated from each other by the
interlocking, without the film run being unfavorably impaired.
Since both tracks are approximately equivalent long, the scope of
the film tube at the interlocking, running over the edges, is
seized by the film draw off in the center and moved on without
problems. Approximately equivalently long means, that the route
length amounts to fewer than the track, which leads across a form
item preferably 1.5 times of a collection height of a form item.
Due to the equality of the tracks, the contact length of the inner
surface of the film tube with the outer surface of the filling
tubes and the form items are alike, whereby the friction forces are
adapted to each other along the tracks.
[0007] Further, favorable arrangements of the invention are
described in the requirements 2 to 9.
[0008] If no form items are present along the first track and if
two form items are intended (requirement 2) along the second track,
then bags with only two sealed bottom edges can be manufactured in
such a manner. Even this type of bag led due to the large track
difference to relatively large problems, occurring with
conventional bagging machines, regarding the film run.
[0009] If a parallel is intended in a distance to the effect
straight line, which is likewise situated like the effect straight
lines in the cross section, the radius of curvature of the inner
surface of an area of the filling tubes at the crossover of the
effect straight lines sets as perpendicularly to it a running, the
cross section interspersing center line, and the radius of
curvature to the outer surface of this area at the intersection of
the parallels with the center line on (requirement 3), can then in
a technically reliable track a filling tube with the desired, same
tracks be manufactured in such a manner. The radii of curvature,
their points of setting and the track can be calculated in a simple
track and given for the filling pipe-making. The manufacturing is
relatively simple, if there are two form items of the second track
and in accordance with claim 4 the area along the first track or in
accordance with requirement 5 along both tracks are intended.
[0010] If a guiding device, accessing over the form items, is
intended, the edges run in between the form items and the guiding
device (requirement 6) the edging process is more exact. In
dependency of the film printing of the sealed edges are produced
exactly.
[0011] It proved to be extremely meaningful and appropriate, if the
radius of curvature of the inner surface of the area is smaller
than the radius of curvature of the outer surface of this area
(requirement 7). The manufacturing expenditure and the materials
are minimal.
[0012] The film run is further improved, if similar to claim 8 a
section of the filling tubes are running in a filling pipe of the
forming shoulder, which indicates an inner surface concentric to
the outer surface. This section is developed similar to a
conventional filling tube.
[0013] If flattening is intended to set the film ends (requirement
9) at the filling tube, then a better frictional engagement between
the film tube and the film ends takes place, and the film feed is
more precise.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The invention will be further described based on figures. It
shows:
[0015] FIG. 1: from a side view, a vertical bagging machine that
produces bags with two sealed bottom edges,
[0016] FIG. 2: from a side view the subject of FIG. 1, rotated 90
degrees around its axle center;
[0017] FIG. 3: in a cut along FIG. 1, the subject of FIG. 1,
whereby a film tube between an outer fill pipe piece of a form
shoulder and an inner section fill pipe runs;
[0018] FIG. 4: a cut along B-B of the FIG. 1, the subject of the
FIG. 1, whereby the filling tube indicates two different radii R1
and R2, two form item edges in the film tube, and vertical sealing
equipment seals a vertical seal;
[0019] FIG. 5: a cut along C-C of FIG. 2, two opposite film ends,
at an interlocking of the film end at the filling tube;
[0020] FIG. 6: a perspective portrayal of a bag, manufactured with
the bagging machine in accordance to FIG. 1, which indicates two
sealed edges at the bottom;
[0021] FIG. 7: a vertical cut of the subject of FIG. 6;
[0022] FIG. 8: a horizontal cut a vertical filling tube similar to
FIG. 5, however with differently set radii R1 and R2, as well
as
[0023] FIG. 9: FIG. 8, rotated 90 degrees around its vertical axle
center, whereby at the filling tube flattening is intended for
better grapping of the film ends.
DETAILED DESCRIPTION OF THE INVENTION
[0024] With a vertical bagging machine 1, a forming shoulder 2
transforms a film track 3 to a film tube 4 (FIG. 1, FIG. 2).
Vertical sealing equipment 5 is intended to parallel seal the film
tube 4 to its transport equipment 6 under production of a vertical
seal 7. A crosswise seal mechanism 8 seals the filling tube 4
transverse to the transport equipment 6 with transverse seals. A
separating device 9 is separating the bags 10 from the film tube 4,
a filling tube 11 to optionally filling the bags 10 (FIG. 6, FIG.
7).
[0025] Two, in opposite directions rotating film ends 12, that
border the filling tube 11, 20 are being used to remove the film
track 3 from the supply role 13 to carry on the film tube 4,
whereby the film ends 12, 20 operate against the filling tube 11
along an interlocking 14, in order for the film tube 4, between the
vertical filling tube 11 and the film ends 12, 20 to seize and move
downward with frictional engagement. From the filling tube 11 form
items 15 are there for the formation of output-steered edges 16 of
the tubular sheeting 11 in FIG. 4.
[0026] In in-feed direction 6 of the form items 15, a seal item 18
is intended to seal the edges 18. At the horizontal cross section
of the filling tubes 11, a first track 21 from the interlocking 14
at the first film end 12 extends out over the outer surface 19 of
the filling tubes 11 up to the interlocking 14 at the second film
end 20 (FIG. 4). The first track 21 is equal to the second track
22, which originates from the interlocking 14 of the first film end
12 reaches out and over the outer surface 19 and over the form
items 15 to the interlocking 14 at the second film end 20. The form
items 15 are intended for the first track 21 only.
[0027] A parallel 23 is intended in a distance to the effect
straight line 14, which is likewise situated like the effect
straight line 14 in the cross section. The radius of curvature R1
of the inner surface 24 of the area 27 of the filling tubes 11,
sets at the crossover of the effect straight lines, running a
perpendicularly with, the cross section interspersing center
line.
[0028] The radius of curvature R2 of the outer surface 28 of this
area 27 sets at the intersection 29 with the centerline 26 for the
parallel 23.
[0029] The area 27 is intended along the first track 21. With the
example FIG. 8, area 27 is intended the along the first 21 and the
second 22 track.
[0030] A guiding device 30 seizing over the form items 15 is
intended at the film tube 4, whereas the edges run 15 between the
form items 15 and the guiding device 30 (FIG. 4). The radius of
curvature R1 of the inner surface 24 of the area 27 is smaller than
the radius of curvature R2 of the outer surface 28 of this area 27.
In a filling pipe 31 of the forming shoulder 2, a running section
32 of the filling tubes 11 indicates an inner surface 24 concentric
to the outer surface 28 (FIG. 3). A further example (FIG. 9) shows,
that flattening 33 is intended for better setting of the film ends
12, 20 at the filling tube 11.
[0031] In consequence of the same lengths of the tracks 21, 22 the
film run is optimized.
* * * * *