U.S. patent application number 13/862807 was filed with the patent office on 2013-10-17 for variable cutoff in a cutter folder.
The applicant listed for this patent is Goss International Americas, Inc.. Invention is credited to Gerald Roger Douillard, John James Sposato, JR., Jeffrey S. Upchurch.
Application Number | 20130269493 13/862807 |
Document ID | / |
Family ID | 48139801 |
Filed Date | 2013-10-17 |
United States Patent
Application |
20130269493 |
Kind Code |
A1 |
Douillard; Gerald Roger ; et
al. |
October 17, 2013 |
VARIABLE CUTOFF IN A CUTTER FOLDER
Abstract
A folder for a printing press includes a cutting cylinder
assembly having at least two knife and anvil cylinder sets
positioned near the cutting region of a folder. The cutting
cylinder assembly slides or actuates one of the knife and anvil
cylinder sets into a cutting position for a desired cut length. The
web passes between the knife and anvil cylinder set and is cut.
When the cut length needs to be changed, the assembly is relocated
to such a position that a second or further set of knife and anvil
cylinders is aligned with the web.
Inventors: |
Douillard; Gerald Roger;
(Manchester, NH) ; Sposato, JR.; John James;
(Dover, NH) ; Upchurch; Jeffrey S.; (Stratham,
NH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Goss International Americas, Inc.; |
|
|
US |
|
|
Family ID: |
48139801 |
Appl. No.: |
13/862807 |
Filed: |
April 15, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61625429 |
Apr 17, 2012 |
|
|
|
Current U.S.
Class: |
83/34 ;
83/346 |
Current CPC
Class: |
B26D 5/02 20130101; B65H
35/08 20130101; Y10T 83/4838 20150401; B41F 13/62 20130101; B41F
13/60 20130101; B41F 13/58 20130101; Y10T 83/05 20150401; B26D
1/405 20130101 |
Class at
Publication: |
83/34 ;
83/346 |
International
Class: |
B65H 35/08 20060101
B65H035/08 |
Claims
1. A folder for a printing press comprising: a movable assembly
including a first cutting cylinder pair including a first knife
cylinder and a first anvil cylinder for cutting a web into
signatures, and a second cutting cylinder pair including a second
knife cylinder and a second anvil cylinder for cutting the web into
signatures; the movable assembly supporting the first cutting
cylinder pair and second cutting cylinder pair, the assembly
movable to selectively position either the first cutting cylinder
pair or the second cutting cylinder pair into a cutting position
for cutting the web.
2. The folder of claim 1, wherein the movable assembly is movable
perpendicular to a transport path of the web.
3. The folder of claim 1, further comprising one or more rails, and
wherein the movable assembly is movable perpendicular to a
transport path of the web on the one or more rails.
4. The folder of claim 1, further comprising a linear bearing or
bushing, and wherein the movable assembly is movable perpendicular
to a transport path of the web via the linear bearing or
bushing.
5. The folder of claim 1, further comprising an actuator, the
actuator coupled to the movable assembly, the actuator moving the
movable assembly to selectively position either the first cutting
cylinder pair or the second cutting cylinder pair into a cutting
position for cutting the web.
6. The folder of claim 5, wherein the actuator is one of a
hydraulic actuator, a pneumatic actuator, and a motor.
7. The folder of claim 1, further comprising: a former, upstream of
the movable assembly, arranged to impart a longitudinal fold to a
web; a plurality of guide belts, downstream of the movable
assembly, the plurality of guide belts arranged to receive the cut
web from the movable assembly; wherein the moveable assembly is
movable perpendicular to a web path of the web.
8. The folder of claim 1, wherein the first knife cylinder includes
a first, second, third and fourth knife box positions, the first
and third knife box positions equally spaced apart from each other
around a circumference of the first knife cylinder, the first,
second, and fourth knife box positions equally spaced apart from
each other around the circumference.
9. The folder of claim 8, wherein the first anvil cylinder includes
a first, second, third and fourth anvil positions, the first and
third anvil positions equally spaced apart from each other around a
circumference of the first anvil cylinder, the first, second, and
fourth anvil positions equally spaced apart from each other around
the circumference.
10. The folder of claim 9, wherein the second knife cylinder
includes a first knife box and a second knife box equally spaced
apart from each other around a circumference of the second knife
cylinder, and the second anvil cylinder includes a first anvil and
a second anvil equally spaced apart from each other around a
circumference of the second anvil cylinder.
11. The folder of claim 9, wherein the first and third knife box
positions each have removably secured therein a knife box, and the
first and third anvil positions each have removably secured therein
an anvil, wherein the first cutting cylinder pair provides four
cuts for each revolution of a plate cylinder of the printing
press.
12. The folder of claim 9, wherein the first, second and fourth
knife box positions each have removably secured therein a knife
box, and the first, second and fourth anvil positions each have
removably secured therein an anvil, wherein the first cutting
cylinder pair provides six cuts for each revolution of a plate
cylinder of the printing press.
13. The folder of claim 11, further comprising a motor, the motor
driving the first cutting cylinder pair.
14. A method of cutting a web into variable length signatures
comprising the steps of: (a) supporting a first cutting cylinder
pair and a second cutting cylinder pair with an assembly; (b)
positioning either the first cutting cylinder pair or second
cutting cylinder pair into a cutting position with respect to the
web; (c) cutting the web into signatures using the positioned
cylinder pair; (d) repositioning the first and/or second cylinder
pairs so the other cutting pair is in a cutting position with
respect to the web; (e) cutting the web into signatures using the
other positioned cylinder pair.
15. The method of claim 14 wherein the step of positioning includes
moving the assembly perpendicular to a transport path of the
web.
16. The method of claim 14, wherein the step of cutting the web
into signatures using the positioned cylinder pair includes
providing four cuts per revolution of a plate cylinder of a
printing press located upstream of the assembly.
17. The method of claim 14, wherein the step of cutting the web
into signatures using the positioned cylinder pair includes
providing six cuts per revolution of a plate cylinder of a printing
press located upstream of the assembly.
18. The method of claim 15, wherein the step of cutting the web
into signatures using the other positioned cylinder pair includes
providing five cuts per revolution of the plate cylinder of the
printing press located upstream of the assembly.
19. The method of claim 18, further comprising, after either step
(c) or step (e): (f) cutting the web into signatures using the
positioned cylinder pair, the positioned cylinder pair providing
six cuts per revolution of the plate cylinder of the printing press
located upstream of the assembly.
20. The method of claim 19, wherein the first knife cylinder
includes a first, second, third and fourth knife box positions, the
first and third knife box positions equally spaced apart from each
other around a circumference of the first knife cylinder, the
first, second, and fourth knife box positions equally spaced apart
from each other around the circumference; wherein during step (c),
the first and third knife box positions each have removably secured
therein a knife box; and further comprising, before step (f),
removing the knife box from the third knife position, and removably
securing in each of the second and fourth knife positions a
respective knife box.
Description
[0001] This application claims priority to U.S. Provisional
Application Ser. No. 61,625,429, filed Apr. 17, 2012, the entire
disclosure of which is hereby incorporated by reference.
[0002] The present invention relates generally to printing press
equipment and more particularly to cutting devices and cutting
folders.
BACKGROUND
[0003] U.S. Pat. No. 5,865,082, hereby incorporated by reference
herein, discloses a first conveyor assembly and a second conveyor
assembly. Cooperating cutting cylinders having a knife and an anvil
are integrated into paths of the conveying elements of the first
and second conveyor assemblies, seizing a web of material prior to
a cutting operation.
[0004] U.S. Pat. No. 6,684,746, hereby incorporated by reference
herein, discloses cutting a web by linearly moving a plurality of
cutting elements in a same direction as web in a signature
formation area and cutting the web with the cutting elements to
form signatures. A length of the signatures is varied by varying
the spacing between the cutting elements in the signature formation
area.
[0005] U.S. Pat. No. 8,104,755, hereby incorporated by reference
herein, discloses an adjustable delivery web conversion apparatus.
A variable cutoff printing unit prints pages on a web is slit into
ribbons. A cutting apparatus cuts the ribbons into signatures. A
controller controls the cutting apparatus based on the printing by
the variable cutoff printing unit so the pages are properly
positioned on the signatures.
SUMMARY OF THE INVENTION
[0006] Typically, individual products have dedicated folder
deliveries which accommodate the characteristics of the associated
products. Other deliveries accommodate variable cut lengths of
products by increasing the speed of the cutting cylinders relative
to the web in order to shorten the length of the product or
decreasing the speed of the cutting cylinders relative to the web
in order to increase the length of the product. However, the speed
of the knife blades on the cutting cylinder may cause performance
issues and product damage.
[0007] In the past, discrete cut length changes may have been done
by removing and replacing the cutting cylinder cassette assembly.
This is a very time consuming process that may take a day to
change. Damage may also occur while removing or installing the
cassette assembly.
[0008] An object of the present invention provides discrete cut
length changes of a product by sliding cutting cylinders sets of
different diameters and/or knife arrangements into and out of the
web path in a folder. This allows the production of 203 mm, 244 mm
and 305 mm products from a 1220 mm blanket circumference.
[0009] Another object of the present invention provides cutting
cylinder sets which can change speeds relative to the web in order
to produce discrete sizes within a 10 mm range. For example,
product lengths varying between 305 mm and 315 mm may be cut by
rotating the 315 mm size cutting cylinder set faster relative to
the web speed.
[0010] The present invention provides a folder for a printing press
including: a cutting cylinder assembly having at least two knife
and anvil cylinder sets positioned near the cutting region of a
folder. The cutting cylinder assembly slides or actuates one of the
knife and anvil cylinder sets into a cutting position for a desired
cut length. The web passes between the knife and anvil cylinder set
and is cut. When the cut length needs to be changed, the assembly
is relocated to such a position that a second or further set of
knife and anvil cylinders is aligned with the web.
[0011] In accordance with a first embodiment of the present
invention, a folder for a printing press is provided. The folder
includes a movable assembly which includes a first cutting cylinder
pair including a first knife cylinder and a first anvil cylinder
for cutting a web into signatures, and a second cutting cylinder
pair including a second knife cylinder and a second anvil cylinder
for cutting the web into signatures. The movable assembly supports
the first cutting cylinder pair and second cutting cylinder pair,
and the assembly is movable to selectively position either the
first cutting cylinder pair or the second cutting cylinder pair
into a cutting position for cutting the web.
[0012] The aforementioned embodiment may also include other
optional components and features. For example, the following
features may be included, in any combination:
[0013] In accordance with a further aspect of the first embodiment,
the movable assembly maybe movable perpendicular to a transport
path of the web. The folder may include one or more rails, and
wherein the movable assembly is movable perpendicular to a
transport path of the web on the one or more rails. Alternatively,
a linear bearing or bushing may be provided, wherein the movable
assembly is movable perpendicular to a transport path of the web
via the linear bearing or bushing.
[0014] In accordance with another aspect of the first embodiment,
an actuator is coupled to the movable assembly, the actuator moving
the movable assembly to selectively position either the first
cutting cylinder pair or the second cutting cylinder pair into a
cutting position for cutting the web. The actuator may, for
example, be one of a hydraulic actuator, a pneumatic actuator, and
a motor.
[0015] In accordance with another aspect of the first embodiment, a
former, provided upstream of the movable assembly, is arranged to
impart a longitudinal fold to a web. A plurality of guide belts is
provided downstream of the movable assembly, the plurality of guide
belts are arranged to receive the cut web from the movable
assembly, and the moveable assembly is movable perpendicular to a
web path of the web.
[0016] In accordance with another aspect of the first embodiment,
the first knife cylinder includes a first, second, third and fourth
knife box positions, the first and third knife box positions
equally spaced apart from each other around a circumference of the
first knife cylinder. The first, second, and fourth knife box
positions are equally spaced apart from each other around the
circumference.
[0017] The first anvil cylinder may include a first, second, third
and fourth anvil positions, the first and third anvil positions
equally spaced apart from each other around a circumference of the
first anvil cylinder, and the first, second, and fourth anvil
positions equally spaced apart from each other around the
circumference. The second knife cylinder may include a first knife
box and a second knife box equally spaced apart from each other
around a circumference of the second knife cylinder, and the second
anvil cylinder may include a first anvil and a second anvil equally
spaced apart from each other around a circumference of the second
anvil cylinder The first and third knife box positions may each
have removably secured therein a knife box, and the first and third
anvil positions may each have removably secured therein an anvil,
so that the first cutting cylinder pair provides four cuts for each
revolution of a plate cylinder of the printing press. In order to
provide six cuts for each revolution of a plate cylinder of the
printing press, the first, second and fourth knife box positions
may each have removably secured therein a knife box, and the first,
second and fourth anvil positions may each have removably secured
therein an anvil. A filler piece can be provided in anvil or knife
box positions when no anvil or knife box is present.
[0018] In accordance with a second embodiment of the present
invention, a method of cutting a web into variable length
signatures is provided which includes the steps of: (a) supporting
a first cutting cylinder pair and a second cutting cylinder pair
with an assembly; (b) positioning either the first cutting cylinder
pair or second cutting cylinder pair into a cutting position with
respect to the web; (c) cutting the web into signatures using the
positioned cylinder pair; (d) repositioning the first and/or second
cylinder pairs so the other cutting pair is in a cutting position
with respect to the web; and (e) cutting the web into signatures
using the other positioned cylinder pair.
[0019] The aforementioned embodiment may also include other
optional steps. For example, the following additional steps may be
included:
[0020] In accordance with another aspect of the second embodiment,
the step of positioning includes moving the assembly perpendicular
to a transport path of the web.
[0021] In accordance with another aspect of the second embodiment,
the step of cutting the web into signatures using the positioned
cylinder pair includes providing four cuts per revolution of a
plate cylinder of a printing press located upstream of the
assembly.
[0022] In accordance with another aspect of the second embodiment
the step of cutting the web into signatures using the positioned
cylinder pair includes providing six cuts per revolution of a plate
cylinder of a printing press located upstream of the assembly.
[0023] In accordance with another aspect of the second embodiment,
the step of cutting the web into signatures using the other
positioned cylinder pair includes providing five cuts per
revolution of the plate cylinder of the printing press located
upstream of the assembly.
[0024] In accordance with another aspect of the second embodiment,
the method comprises, after either step (c) or step (e): (f)
cutting the web into signatures using the positioned cylinder pair,
the positioned cylinder pair providing six cuts per revolution of
the plate cylinder of the printing press located upstream of the
assembly.
[0025] Further, the first knife cylinder may include a first,
second, third and fourth knife box positions, where the first and
third knife box positions are equally spaced apart from each other
around a circumference of the first knife cylinder, and the first,
second, and fourth knife box positions are equally spaced apart
from each other around the circumference. During step (c), the
first and third knife box positions each have removably secured
therein a knife box and before step (f), the method may include
removing the knife box from the third knife position, and removably
securing in each of the second and fourth knife positions a
respective knife box.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The invention will be better understood from a reading of
the following description, given purely by way of example, with
reference to the appended drawings, in which:
[0027] FIG. 1 shows a schematic representation of a printing press
including a cutting folder according to the present invention.
[0028] FIG. 2a illustrates the cutting assembly of the folder of
FIG. 1 configured to provide 4 or 5 cuts per plate cylinder
revolution
[0029] FIG. 2b illustrates the cutting assembly of the folder of
FIG. 1 configured to provide 6 or 5 cuts per plate cylinder
revolution.
DETAILED DESCRIPTION
[0030] FIG. 1 shows a schematic representation of a printing press
including a folder in accordance with the present invention.
Printing press 100 may be, for example, a four color web offset
printing press. Printing units 112 may each include two print
couples, each couple including a plate cylinder 113 and a blanket
cylinder 114. Each couple prints on either side of a web 101. Each
print unit 112 may print a different a color, for example, magenta,
cyan, yellow or black.
[0031] After printing, web 101 may be slit into a plurality of
ribbons by a slitter 116, if desired. The ribbons may be combined
and transported to a former 120 for longitudinal folding. The
former fold 122 is in line with a direction of travel A of web 101.
Printing press 100 may include a folder 110 for folding, cutting
and processing web 101 into signatures 102. Folder 110 may be a
pinless former folder, for example.
[0032] Folded web 101 may be transported through a plurality of nip
rolls 130 to a cutting section 128 of folder 110. Cutting section
128 may include an assembly 140 supporting two pairs of cutting
cylinders 136, 146. Each cutting cylinder pair 136, 146 includes a
respective knife cylinder 132, 142 and a corresponding anvil
cylinder 134, 144. The assembly 140 is positioned with respect to
web 101 so either first cutting cylinder pair 136 or second cutting
cylinder pair 146 is in a cutting position with respect to web 101.
As shown in FIG. 1, first cutting cylinder pair 136 is in position
with respect to web 101. The dashed line outlines a second position
of assembly 140 which would align second cutting cylinder pair 146
into a cutting position with respect to web 101.
[0033] Web 101 is then cut by cutting cylinder pair 136. Cutting
cylinder pair 136 may include, for example, three knives and cut
web 101 into signatures have a length of 203.33 mm each. Second
knife cylinder 142 may have a different diameter than first cutting
cylinder 132 and may include two or three knives, for example.
Anvil cylinders 134, 144 include cutting rubbers for the knives to
cut against.
[0034] Knife cylinders 132, 142 may be designed to accommodate a
number of knives. For example, knife cylinders 132, 142 may include
four knife box positions. However, for a specific cutting job, only
two knife box positions may include knives. The other two knife box
positions may include a filler piece. For a subsequent cutting job,
one or both of the filler pieces may be removed and additional
knives may be installed. Thus, knife cylinders 132, 142 may support
two equally spaced knives or three equally spaced knives for
example.
[0035] For example, referring to FIG. 1, cutting cylinder pair 136
may be configured to provide an even number of cuts per plate
cylinder revolution whereas cutting cylinder pair 146 may be
configured to provide an odd number of cuts per plate cylinder
revolution. Further, cylinder pair 136 may be configured with
different numbers of cutting knives/anvil rubbers to provide
further variability. For example, cutting cylinder 132 may be
configured to hold 2 knife boxes equally spaced apart around the
cutting cylinder circumference to provide 4 cuts per plate cylinder
revolution, and may be configured to hold 3 knife boxes equally
spaced apart around the cutting cylinder circumference to provide 6
cuts per plate cylinder revolution. Cutting cylinder pair 146 may
be configured to provide 5 cut per plate cylinder revolution.
[0036] FIGS. 2(a) and 2(b) shows cutting cylinder pair 136
configured to provide 4 cuts per plate cylinder revolution and 6
cuts per plate cylinder revolution respectively. Cutting cylinder
pair 146 provides 5 cuts per plate cylinder revolution. Cutting
cylinder 132 of cylinder pair 136 has four knife box positions 232,
332, 432, and 532 which can each be configured to hold a knife box
500 or a filler piece 600. Anvil cylinder 134 includes four anvil
rubber positions 234, 334, 434, 534, which can each be configured
to hold an anvil rubber 700 or a filler piece 600'. Knife box
positions 232, 332, and 532 are equally spaced apart from each
other around the cylinder circumference. Moreover, knife box
positions 232, 432 are equally spaced apart from each other around
the cylinder circumference. Knife boxes 500 and filler pieces 600
can be removably secured to the cylinder 132 at positions 232, 332,
432, and 532. Anvil rubbers 700 and filler pieces 600' can be
removably secured to the cylinder 134 at positions 234, 334, 434,
and 534.
[0037] Cutting cylinder 142 of cylinder pair 146 has two knife box
positions 242, 342 equally spaced apart around the cylinder
circumference, each holding a knife box 500. Anvil cylinder 144
includes two anvil rubber positions 244, 344 equally spaced apart
around the cylinder circumference, each holding an anvil rubber
700. Knife boxes 500 can be permanently or removably secured to the
cylinder 142 at positions 242, 342. Anvil rubbers 700 can be
permanently or removably secured to the cylinder 144 at positions
244, 344. The aforementioned components can be removed and secured
with fasteners or in any known or desired manner.
[0038] In FIG. 2(a), cutting cylinder 132 has been configured to
includes knife boxes 500 in knife box positions 232 and 432 to
provide two knife boxes equally spaced apart around the cylinder
circumference. Anvil cylinder 134 have similarly be configured each
include two anvil rubbers 700 in anvil rubber positions 234 and
334. Although anvils 700 are typically made of natural or synthetic
rubber, and are thus referred to in the art as "anvil rubbers", and
that convention is used herein for convenience, any suitable
material can be used therefore. Positions 332 and 532 include
filler pieces 600, and positions 334 and 534 include filler pieces
600'. Due to the difference in circumference and/or rotational
speed between cylinders 132,134 of cylinder pair 136, and cylinders
142,144 of cylinder pair 146, cutting cylinder pair 136 will
provide 4 cuts per plate cylinder revolution whereas cutting
cylinder pair 146 will provide 5 cuts per plate cylinder
revolution. As discussed above, assembly 140 is moveable so that
either cylinder pair 136 or cylinder pair 146 can be positioned in
the path of web 101 to cut the web into signatures.
[0039] In FIG. 2(b), cutting cylinder 136 has been configured to
include knife boxes 500 in knife box positions 232, 432, and 532.
To accomplish this change in configuration from FIG. 2(a) to FIG.
2(b): the knife box 500 is removed from knife box position 432 and
replaced with a filler piece 600; the filler pieces 600 are removed
from knife box positions 332 and 532 and replaced with knife boxes
500; the anvil 700 is removed from anvil position 434 and replaced
with a filler piece 600'; and the filler pieces 600' are removed
from anvil positions 334 and 534 and replaced with anvils 700. In
the configuration of FIG. 2(b) cutting cylinder pair 136 will
provide 6 cuts per plate cylinder revolution whereas cutting
cylinder pair 146 will provide 5 cuts per plate cylinder
revolution.
[0040] The present invention can be used with most "double around"
long grain or short grain print unit sizes. It may also be used
with one-around print units. Set forth in the table below are
examples of product mixes that are possible for a variety of common
printing press cut-offs. It should be noted that each row
corresponds to a given assembly 140 with cylinders 132, 134, 142,
144 having sizes selected for the referenced cut-off. In other
words, the cylinders 132, 134, 142, and 144 would be manufactured
in different sizes for a 610 mm cut-off than for a 630 mm cutoff.
The particular sizes required for a given cut-off are a matter of
simple geometry and will not be discussed herein:
TABLE-US-00001 TABLE 1 Spine Length by No. of Cuts per Plate Rev
(mm) Nom. Cutoff (mm) (in) Plate Circ (mm) 3 4 5 6 435 870 290.0
217.5 445 890 296.7 222.5 470 940 313.3 235.0 484 968 242.0 533.4
(21.0) 1066.8 266.7 213.4 546.1 (21.5) 1092.2 273.1 218.4 565.15
(22.25) 1130.3 282.6 226.1 577.85 (22.75) 1155.7 288.9 231.1 590
1180 295.0 236.0 610 1220 305.0 244.0 203.3 620 1240 310.0 248.0
206.7 630 1260 315.0 252.0 210.0 638.35 (25.132) 1276.7 255.3 212.8
666.75 (26.25) 1333.5 266.7 222.3
[0041] Accordingly, for a nominal cutoff of 435 mm, an apparatus
according to the present invention could generate 3 cuts per plate
cylinder rotation to provide 290 mm signatures with cylinder pair
146 and 4 cuts per plate cylinder rotation to provide 217.5 mm
signatures with cylinder pair 136 configured as show in FIG. 2(a).
For a nominal cut-off of 610 mm, an apparatus constructed according
to the present invention could generate 5 cuts per plate cylinder
rotation to provide 244 mm signatures with cylinder pair 146, and 4
cuts per plate cylinder rotation to provide 305 mm signatures with
a cylinder pair 136 configured as shown in FIG. 2(a), and 6 cuts
per plate cylinder rotation to provide 203.3 mm signatures with the
cylinder pair 136 configured as shown in FIG. 2(b).
[0042] Assembly 140 may be a linear rail set, a set of V rails, or
a flat track. When assembly 140 moves, a lock down is released, the
movement is actuated by, for example, hydraulic cylinders. Air
cylinders or motor(s) may also be used. Assembly 140 is then moved
into the proper cutting position and locked into place. Other
components of folder 110 or cutting section 128 may need to be
temporarily repositioned or relocated in order to provide
sufficient clearance for moving and repositioning assembly 140.
[0043] With regard to movement of the assembly, the assembly 140
may for example, have extendable or retractable wheels. When the
assembly 140 is to be moved, the wheels extend, the assembly is
moved along the rails or track under the control of a motor,
hydraulic cylinder, or pneumatic cylinder. When assembly 140 is in
place, the wheels retract thereby fixing the assembly in position.
Locating devices, such as pin/hole combinations, can be used to
ensure that the assembly is in the proper position. Linear slide
mechanisms, such as linear bearings or bushings may alternatively
be used. Such mechanisms would not employ the retractable wheels,
and would not necessarily need locating devices.
[0044] Cutting cylinder pairs 136, 146 may be driven independently
to allow variation in the cut off length. Assembly 140 may also
support the drive necessary to rotate the cylinders, for example, a
gear train, a belt drive or individual motors.
[0045] Tapes, for example, tapes 150 may support web 101 and
signatures 102 cut therefrom. Fan cylinders 152, 154 may receive
signatures 102 and deposit signatures 102 on conveyor 156 for
further processing. Fan delivery is product length sensitive. A
tail belt registers the signatures 102 against the strippers. The
strippers force the signature out of the fan pocket. The signature
then lands on the delivery belts 156. Conventional mechanisms allow
quick make-ready adjustments to the belt and stripper to
accommodate quick changes in product length, and therefore will not
be discussed herein.
[0046] In the foregoing specification, the invention has been
described with reference to specific exemplary embodiments thereof.
It will, however, be evident that various modifications and changes
may be made without departing from the broader spirit and scope of
the invention as set forth in the appended claims. The
specification and drawings are accordingly to be regarded in an
illustrative rather than a restrictive sense.
* * * * *