JPS62100358A - Size changing system in sheet cutting and packaging line - Google Patents

Abstract

PURPOSE:To facilitate a size change during operation, by packing up the last sheet cut by an old size when it enters a first stacking part, and then changing a cutter, slitter, a stacking part and pakaging process over to a new size. CONSTITUTION:A web 11 out of a roll 10 is delivered and a slitter 14 and a cutter 18 are controlled by each of controllers 15 and 17 with a command out of a new size changing controller 16 and it is cut in the specified size. When this size changing controller 16 indicates a size change, a tracking device 25 of a stacking part is tracking the last sheet but by an old size, and when reaching to a first stacking part, it is packed up by a packaging part 35 and delivered. Next, each size of the slitter 14 and the cutter 18 is changed, whereby tracking for a first new size sheet is carried out by the stacking part tracking device 25. Then, each process is adjusted to a new size via a stacking sequence controller 39, a stacking part side changing controller 38, a package sequence controller 41 and a package part size changing controller 40. With this constitution, a size change can be made so easy even during operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves cutting a web wound into a roll while unwinding it, cutting it into sheets, stacking these sheets, and then packaging them. Regarding sheet cutting and packaging lines,
More specifically, the present invention relates to a size change system that changes the size of each process in response to a change in sheet size.

[Conventional technology]

In the sheet cutting/packaging line, the web in the form of a roll is unwound and cut to a predetermined width using a slitter, then cut to a predetermined length using a cutter, and the resulting sheets are stacked in a stacking section. The thus accumulated bundles are sent to the packaging section and wrapped with packaging sheets. In addition, Japanese Patent Application Publication No. 5136380
The publication discloses a control device that digitally sets the cutting length of the web and accurately cuts the web according to the set value, and also performs discrimination and cutting at mark positions.

[Problem that the invention seeks to solve]

Generally, the sheet size is often changed while drawing the web from the same roll, in which case it is necessary to change the size of each piece of equipment to accommodate the new size sheet. It is. By sending a size change command to a thrifter or cutter, it is possible to change the cutting width and cutting length to desired values without stopping the line. However, in the conventional stacking section, the start of size change is performed manually, which has the disadvantage that the work is troublesome.

In addition, the packaging department handles the bundle taping process, the interior wrapping process,
The process consists of an inner edge folding process, an exterior wrapping process, an exterior taping process, and a single bundle accumulation process. Therefore, if there is an unwrapped bundle in the packaging section,
Unable to resize. Therefore, until the size change is completed, a new size stack cannot be placed in the packaging section, so it is ultimately necessary to stop the entire line.

[Means for solving problems]

In order to solve the above problems, the present invention reduces the amount of movement of the belt conveyor that conveys the final sheet when the last sheet of the old size is cut immediately before changing the sheet size to a new size. By measuring, the position of the final sheet is tracked, and when this final sheet is stacked in the first stacking section, the final stacked bundle containing this final sheet is sent to the next packaging section, and along with it, the position of the first stacking section is sent out. After changing the size to the new size, each process in the packaging department sends the final stacked bundle to the next process, then changes the size in sequence, and also changes the conveyance position of the first sheet of the new size that has been cut. Before the first sheet reaches the gate that tracks and distributes it to the first stacking section and the second stacking section, this gate is activated to put the first sheet into the second stacking section that has been changed to a new size. It is something.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

〔Example〕

In FIG. 1, a web 11 wound around a roll 10 is pulled out while being nipped by a pair of pull-out rollers 12 and 13, and is transported toward a slitter 14. As is well known, this slitter 14 consists of an upper blade 14a and a lower blade 14b, and rotates while the web 11 is being transported.
This is cut to a predetermined width. These upper blade 14a and lower blade 14b.

The slitter control device 15 can move in the width direction of the web 11 to change the cutting width to a desired value.

The feed section size change control device 16 sends a size change command to the slitter control device 15 and the cutter control device 17 to process sheets of a different size when the scheduled number of sheets have been processed.

The web 11 cut into a predetermined width is sent to a cutter 18 and cut. This cutter 18 consists of an upper blade 18a and a lower blade 18b, as is well known, and cuts the sheet ita from the web 11. Also, is the cutter 18 a cutter system? The il device 17 allows the cutting length to be changed to a desired value depending on the sheet size.

The sheet l la is conveyed to the position of the first gate 23 by the first conveyor belt 22 . In order to track the position of the sheet 11a on the first conveyor belt 22, a rotary encoder 24 that rotates following the first conveyor belt 22 is provided, and sends generated pulses to the stacking section tracking device 25. . Furthermore, for a defective sheet containing defects such as holes and irregularities, the first gate 23 is moved to the position shown by the two-dot chain line, and the sheet is sent to the defective product accumulation section 26.

A non-defective sheet with no defects is sent to the second conveyor belt 27 through the first gate 23 which is in the lowered position shown by the solid line. After this second conveyor belt 27, a second gate 2
8 is disposed, and when it is in the lowered position, the non-defective sheet is sent to the third conveyor belt 29 and transferred to the first stacking section 3.
Accumulates to 0.

Further, when the second gate 28 is in the raised position, the non-defective sheets are conveyed toward the fourth conveyor belt 31 and stacked on the second stacking section 32. These accumulation parts 30.32
When a predetermined number of non-defective sheets are stacked, they are delivered to the conveyor bell (33, 34) as a stacked bundle and sent to the packaging section 3.
Send to 5. Note that the first to 481st conveyor belts move at the same speed, but if the speeds are different, it is necessary to provide a row encoder to detect the sheet position on each conveyor belt. It is.

The gate drive unit 37 respectively displaces the first gate 23 and the second gate 28 between a lowered position shown by a solid line and a raised position shown by a two-dot chain line. This gate driving section 37 is controlled by the integrated section tracking device 25.

It is necessary to adjust the size of the first and second stacking sections 30, 32 according to the sheet size, and for this purpose, a stacking section size change control device 38 is provided.
It operates in response to an accumulation size change command from the accumulation sequence control device 39. Further, the packaging section 35 also needs to change the packaging size according to the sheet size, and for this purpose, a packaging section size change control device 40 is provided, and a packaging size change command from the packaging sequence control device 41 is provided. It is operated by. Note that the reference numeral 42 indicates a packaged final product.

The production control device 43 is operated by an operator to input sheet size, planned number of sheets, number of sheets per bundle, etc.
Sending unit size change control device 16 for sending out necessary data and commands
．． Accumulating unit tracking device 25, accumulating unit size change control device 38. The packaging section size change control device 40 is sent to and controlled by each of them.

FIG. 2 is a functional block diagram of the sending unit size change control device. The scheduled number of sheets sent from the production control bag f43 is sent to the sheet number counting section 47 via the communication control circuit 46 and stored therein, and the sheet size is stored in the sheet size change decoder section 48. Cutter control device 17
generates a cut signal when the cutter 18 is operated to process the sheet 11a, and sends this to the sheet number counting section 47. The sheet number counting section 47 generates a non-defective cut signal when the force/gutter signal is input, and counts the signal to check the number of non-defective sheets that have been processed.

When the number of non-defective items reaches the pre-specified expected number,
A size change timing signal 49 is sent to a sheet size change decoder section 48. This sheet size change decoder section 4
8 changes the cutting width of the slitter 14 and the cutting length of the cutter 18 when the size change timing signal 49 is input manually, and starts processing a sheet of a new size specified in advance. Further, when the sheet number counting unit 47 receives the first cut signal after the size change timing signal 490 is generated, it determines that the first sheet has been processed in the new size and sends the size change cut signal. Occur.

A defect detection sensor 50 is provided close to the cutter 18, and when it detects a defect mark 51 on the web 11, it sends a defect detection signal to the sheet number counting section 47. This defect mark 51 is an end portion of the web 11 that is inspected using a surface inspection device before being wound onto the roll 10, and when it is determined that there is a defective portion 52. recorded in the extended part. Number of sheets counting part 4
7 receives the defect detection signal and then, when a cut signal is input, determines that the defective sheet including the defective part 52 has been processed, and outputs a defective cut signal,
Count this.

FIG. 3 shows an example of a stacking section tiger knocking device. The defective product cut signal is continuously output until the next cut signal is generated, during which time the AND circuit 54 is opened and the pulse from the rotary encoder 24 is supplied to the counter 55. When the counter 55 counts the number of pulses corresponding to the distance between the cutter 18 and the first gate 23, it sends a signal 56 to the gate drive section 37 to displace the first gate 23 to the raised position.

The size change cut signal is output when the first sheet of the new size is processed, and is continuously output until the next cut signal is generated, during which time the AND circuit 5
7 is opened to supply the pulse from the low reencoder 24 to the counter 58. When this counter 58 counts the number of pulses corresponding to the distance between the cutter 18 and the second gate 28, it sends a signal 59 to the position determining section 60 and the integrated sequence control device 39. This position determining section 60 is
When the signal 59 is input, the position of the second gate 28 is switched and the first sheet of the new size is sent to a different stacking section than before.

The production control device 43, via the communication control device 61,
The number of sheets in the stacked bundle is sent to the sheet number counter 62. When a predetermined number of sheets is reached while processing sheets of the same size, the sheet number counter 62 sends a signal 63 to the ascending/descending determining section 60 to switch the position of the second gate 28. . AN that is opened by a non-defective cut signal in order to cause the sheet number counter 62 to perform a counting operation.
A D circuit 64 and a counter 65 for counting pulses passing through the AND circuit 64 are provided.

This counter 65 receives a signal 66 when the leading edge of the sheet has been transported a sufficient distance to pass over the second gate 28.
is sent to the sheet number counter 62, and the second gate 28 is moved to the opposite position. Note that each counter 55, 58, 62 .
When the counter 65 reaches a preset value, it returns to zero and starts counting from zero again.

The ascending/descending determining section 60 generates a switching signal 69 for the second gate 28 by referring to the current position signal 68, and sends this to the gate driving section 37 and the gate circuit 70. The gate circuit 70 converts the pulses from the rotary encoder 24 into a counter 71 when the gate switching signal "69" is input.
send to This counter 71 is for tracking the final sheet placed on the top of each stacked bundle, and tracks it by taking into account the distance from the first sheet entering the new stacking section. That is, the counter 71
The distance between the last sheet and the first sheet that comes after it is subtracted from the distance between 8 and each stacking section, and the second stacking is completed when the final sheet is transferred to, for example, the second stacking section 32. generates a signal 72 and outputs a signal 72 to the first integrating section 3;
Generates a first integration completion signal 73 when transferred to 0,
These are sent to the integrated sequence control device 39. Since the signal 68 indicating the position of the second gate 28 is inputted to the stacking sequence control device 39, the stacking completion signal of the stacking section where the final sheet is to be stacked is output from the gate position before the gate switching is performed. Prioritize.

The accumulation sequence control device 39 operates the dispensing device 76 at a timing synchronized with the prioritized accumulation completion signal, and retracts the bottom plate 30a of the accumulation section, for example, the first accumulation section 30, in a direction perpendicular to the plane of the paper, for which accumulation has been completed. The receiver transfers the accumulated bundle to the conveyor belt 33. When the stacking bundle dispensing is completed, the stacking sequence control device 39 outputs the stacking bundle dispensing signal 7.
Outputs 7. Note that instead of the first stacking unit 30, the second stacking unit 32 where sheet stacking is started also has a retractable bottom plate 3.
2a, but since the prioritized integration completion signal is the first integration completion signal, it is not activated.

When the sheet size is changed, the signal 59 outputted from the counter 58 is inputted to the stacking sequence control device 39, so instead of the stacked bundle payout signal 77, the signal 59 output from the counter 58 is sent to the last stack of the old size. A final bundle discharge signal 78 indicating this is generated and sent to the packaging sequence control device 41 to change the size of the packaging section 35.

The new size data sent from the production control device 43 is input to the size change decoder section 81 via the communication control circuit 80. This size change decoder section 81 is
At the timing when the final stacked bundle dispensing signal 78 from the stacking sequence control device 73 is input, the motors 83 and 84 are changed according to the new size via the size change motor control unit 82.
to drive. As is well known, these motors 83 and 84 slide the frame plates of the first stacking section 3o and the second stacking section 32 according to the sheet size, so that sheets of a new size can be stacked. Note that a guide is provided near the entrance of each stacking section 30.32 to regulate the position of the sheets so that they enter the stacking section 30.32 correctly.
The intervals between these guides are the same as before, and the motor 83.8
4, the interval is changed.

FIG. 4 shows the working process of the packaging department.

Since this packaging section 35 is the same as the conventional one, it will be disclosed to the extent that it facilitates understanding of the present invention, and the specific configuration of the device will be omitted. The stacked bundle 87 is first sent to a bundle taping step, where tape 88 is applied at two locations on one side, a total of four locations, to prevent shifting. This stacked bundle 87 subjected to bundle taping is sent to an interior netting process, and is wrapped with interior paper 89a pulled out from interior paper roll 89.

After this winding, the interior paper 89a is cut with a cutter (not shown), and then sent to an interior edge folding process, where the edges on both sides are folded in and fixed with tape 9o. In the wrapping process, the topmost wrapping paper 91 is taken out from the stacked wrapping paper bundles 91, and the stacked bundle 92 wrapped with the inner paper 89a is placed on top of it. This exterior paper 91 is first folded on both sides, then turned 90 degrees, and a tape 93 is applied to the seam. After the product 42 packaged in this manner is changed in direction, a predetermined number of products are stacked on a pallet 94 and transported to a warehouse or the like while being placed on the pallet 94.

FIG. 5 shows the packaging section. The packaging sequence control device 41 includes an east taping sequence control circuit 100.
Interior netting sequence control circuit 101, interior edge folding sequence control circuit 1o2. Exterior sequence control circuit 103
．． Exterior taping sequence control circuit 104. It is composed of a bundle integration sequence control circuit 105. Furthermore, the packaging section 35 is connected to the east taping device 107. Interior trunk tensioning device 1
08. Interior selvage folding device 109. Exterior device 11o.

It is composed of an exterior taping device 1111 and a bundle accumulating device 112. Note that these devices 107 to 112 are
Since it is well known, it will be disclosed to the extent that it does not impede understanding of the present invention. The packaging section size change control device 40 includes a communication control circuit 114. Size change decoder section 115. It is composed of a size change motor control section 116.

When the east taping sequence control circuit 100 receives the accumulated bundle dispensing signal 77 or the final accumulated bundle dispensing signal 78 including the final sheet of the old size, it sends an operation start signal 120 to the bundle taping device 107 to activate it. Then perform bundle taping.

This bundle taping sequence control circuit 100 outputs a bundle taped bundle delivery signal 121 when the east taping operation is completed and the stacked bundle 87 is sent to the interior netting device 108 during a period when the sheet size is not changed. It is sent to the interior meshing sequence control circuit 101. However, when the final stacked bundle dispensing signal 78 is input to the bundle taping sequence control circuit 100, it is the case that the last of the stacked bundles of the old size is being bundle taped. At the time of payout, an east taping final bundle payout signal 122 is sent to the interior netting sequence control circuit 101 and the size change decoder section 115. This size change decoder section 115 uses the east taping final east payout signal 122 as a size change timing signal, and uses the production management Wi? ? A size change signal corresponding to the next sheet size specified in step 43 is generated and sent to the size change motor control section 116. This size change motor control section 11
Step 6 rotates the size changing motor 123 to change the bundle taping size of the bundle taping device 107 so as to cope with the next stacked bundle of a new size.

The interior netting sequence control circuit 1o1 sends an operation start signal 124 to the interior netting device 108 to activate the interior netting device 108 when the east taping completed east payout signal 121 or the east taping final east payout signal 122 is input. Start netting.

When this interior netting is completed and the interior netting bundle is delivered to the interior selvage folding device 109, the interior trunk length sequence control circuit 101 outputs the interior trunk length bundle delivery signal 125 or the interior Torso length final east payout signal 126
and outputs this to the internal folding sequence control circuit 102.
send to This interior trunk length final east payout signal 126 is a signal indicating that the last accumulated bundle of the old size has been paid out, so when this is input to the size change decoder section 115, it is used as a size change timing signal. , the size change motor 127 is operated, and the interior trunk lengthening device 1 is operated to deal with the stacked bundle of the new size sent next.
Change the size of 08.

The inner edge folding sequence control circuit 102 outputs an inner body length east payout signal 125 or an inner body length final east payout signal 12.
6 is input, an operation start signal 128 is sent to the inner selvage folding device 109 to activate it and start folding the inner selvedge. When this inner selvage folding is completed and the inner selvage folded bundle is delivered to the exterior device 110, the inner selvage folding sequence control circuit 102 outputs an inner selvage folding east delivery signal 129 or an inner selvage final east discharging signal 129 according to the input signal. Payout signal 1
30 and sends it to the exterior sequence control circuit 103. When this inner edge folding final east payout signal 130 is input to the size change decoder section 115, this is used as a size change timing signal to drive the size change motor 13.
1 is activated to change the size of the device so that the inner body of the inner ear folding device W109 is lengthened according to the new size.

The exterior sequence control circuit 103 sends an operation start signal 123 to the exterior device 110 to activate the exterior device 110 to start exterior wrapping when the interior selvage folded bundle delivery signal 129 or the interior selvedge final bundle delivery signal 130 is input. . When the sheathing is completed and the sheathing bundle is delivered to the sheathing taping unit W 111, the sheathing sequence control circuit 103 outputs the sheathing bundle dispensing signal 134 or the sheathing final east discharging signal 35 in accordance with the input signal, This is sent to the exterior taping sequence control circuit 104. When this exterior final bundle payout signal 135 is input to the size change decoder section 115, it is used as a size change timing signal to operate the size change motor 136 to exteriorize the exterior device 110 according to the new size. , resize the device.

The exterior taping sequence control circuit 104 sends an operation start signal 138 to the exterior taping device 111 when the exterior bundle discharge signal 134 or the exterior final east discharge signal 135 is input, and activates the exterior taping device 111 to start exterior taping. When this exterior taping is completed and the exterior taping bundle is delivered to the bundle accumulating device 112, the exterior taping sequence control circuit 104 outputs the exterior taping east delivery signal 134 or the exterior taping final east delivery signal 140 according to the input signal. and sends it to the bundle integration sequence control circuit 105. When this exterior taping final east payout signal 140 is input to the size change decoder section 115, it is used as a size change timing signal to operate the size change motor 141, and the exterior taping device 111 performs exterior taping according to the new size. Resize the device so that

The bundle accumulation sequence control circuit 105 sends an operation start signal 142 to the bundle accumulation device 112 when the exterior taping bundle delivery signal 139 or the exterior taping final east delivery signal 140 is input. The bundle stacking device 112 lowers the pallet 94 one step each time a product is transported by the conveyor belt, and stacks the products 42 on the pallet 94 in order.

When a predetermined number of products 42 have been stacked on the pallet 94, or when the last product of the old size has been stacked, they are taken out and a new pallet 94 is set.

Also, if the sheet size is changed, the pallet 9
4, it is necessary to change the interval between the guides according to the sheet size in order to correctly guide the product 42, and for this purpose, when the last stacking bundle of the old size is completed, the size change timing signal 143 changes the size It is sent to the modification decoder section 115. This size change decoder section 115 operates the size change motor 144 to
The size of the device is changed so that 12 corresponds to the new size.

Next, the operation of the above embodiment will be briefly explained. The operator operates the key driver of the production control device 43,
The sheet size, the processing order, the planned number of sheets, and the number of sheets in one bundle are programmed in advance. This sheet size, its processing order, and the planned number of sheets are sent to the delivery section size change control device 16. Further, the sheet size and its processing order are sent to the stacking section size change control device 38 and the packaging section size changing control device 40, and the number of sheets in one bundle is sent to the stacking section tracking device 25, respectively.

The web 11 pulled out from the roll 10 is cut by a slitter 14 and a cutter 18 according to the sheet size. If the processed sheet lla includes a defective part 52, the conveyance position of this defective sheet is tracked, and when it reaches the front of the first gate 23, the first gate 2a is
3 is displaced to the raised position, and the defective product sheet is transferred to the defective product accumulation section 2.
Put it in 6. The number of defective sheets is counted by a sheet number counter 47.

A non-defective sheet that does not include the defective portion 52 passes through the first gate 23 and is transported by the second B transport belt 27 to the second gate 28 . Then, depending on the position of the second gate 28, it is sent to the first accumulation section 30 or the second accumulation section 32 and is accumulated there. When these stacking units 30.32 have stacked a preset number of sheets, the second gate 28 is switched, and thereby each stacking unit 30.32
are used alternately.

When a predetermined number of sheets are stacked in an operating stacking unit, for example, the first stacking unit 30, the stacking sequence control device 39 delivers the stacked bundle 87 to the packaging unit 35, and controls the stacked bundle delivery signal 77 to control the packaging sequence. It is sent to the device 41.

The stacked bundle 87 sent to the packaging section 35 is sequentially subjected to east taping, interior netting, interior edge folding, exterior wrapping, exterior taping, and bundle stacking under the sequence control of the packaging sequence control device 41. For example, when the east taping device 107 performs east taping, this is transferred to the interior netting device 10.
At the same time, the bundle taped accumulated bundle dispensing signal 121 is sent to the interior netting sequence control circuit 101 to start interior netting.

The number counting section 47 checks the number of non-defective sheets by counting the cut signal of the non-defective sheets, and when the number of non-defective sheets reaches the scheduled number, a sheet size change timing signal indicating that sheet processing of a new size should be started. 49 is sent to the sheet size change decoder section 48. This sheet size change decoder unit 48 generates a size change command according to the new sheet size input from the production control device 43,
This is connected to the slitter control device 15 and the cutter control device 1.
7, and change the cutting width of the slitter 14 and the cutting length of the cutter 18, respectively.

When a sheet of a new size is processed by the cutter 18, the sheet number counting section 47 outputs a size change force/two-tooth signal and sends it to the stacking section track/knocking device 25. Since the AND circuit 57 is opened by this size change cut signal, tracking of the first sheet of the new size is started. Then, when the counter 58 counts up to a predetermined value,
That is, when it is detected that the first sheet of the new size has come before the second gate 28, the counter 58 sends a signal 59 to the ascending/descending determining section 60. This rise/fall determination section 60
checks the current position of the second gate 28, and sends a gate switching signal to the gate driver 37 to displace the second gate 28 to the opposite position from the current position.
Switch 8. For example, in the case of the state shown in FIG. 1, the gate driving section 37 moves the second gate 28 to the "-up position" indicated by the two-dot chain line and puts a new size sheet into the second stacking section 32. .

When the second gate 28 is switched, the gate circuit 70 is opened, so that the pulses of the rotary encoder 24 are counted by the counter 70. This counter 70 tracks the last sheet by counting taking into account the distance between the last sheet of a stack and the first sheet of the next stack. The second stacking completion signal 72 is output when the sheets have been transferred a sufficient distance to be stacked in the second stacking section 32, and the second stacking completion signal 72 is output when the sheets have been transferred a sufficient distance to be stacked in the first stacking section 30. , a first integration completion signal 73 is output.

The integrated sequence control device 39 includes a gate driving section 37
The stacking section to which the last sheet is conveyed is determined from the second gate position signal 68 sent from the second gate position signal 68 .

For example, if the last sheet of the old size is heading towards the first stacking section 30, the first stacking completion signal 73 is given priority;
When this is input, the dispensing device 76 is activated. This dispensing device 76 retracts the bottom plate 30a of the first stacking section 30 and places the stacked bundle 87 on the conveyor belt 33.

Furthermore, when the sheet size is changed, the accumulation sequence control device 39 receives a signal 59 from the counter 58, so it determines whether the final sheet is the last sheet of the old size based on the presence or absence of this signal 59. do. If it is determined that it is the last sheet of the old size, the dispensing device 76 is activated and the final stack dispensing signal 78 is activated.
is generated and sent to the packaging sequence control device 41.

Further, this final stacked bundle payout signal 78 is sent to the size change decoder section 81 of the stacking section size change control device 38. This size change decoder section 81 drives the size change motors 83 and 84 according to the new size, and
．． The frame plate No. 32 is moved in the direction of the arrow and the size is changed so that sheets of the new size are accumulated. In addition, a guide (
(not shown) is changed depending on the sheet size.

The final stacked bundle sent to the packaging section 35 by the conveyor belt 33 is
First, east taping was performed using bundle taping equipment W107.
Next, it is delivered to the interior trunking device 108 for interior trunking. After this delivery, the size change motor 123 is rotated to change the size of the east taping device 107 in accordance with the new size of the sheet. When the inner body wrapping of the final stacked bundle is completed, this final stacked bundle is folded into the inner edge folding device 109.
At the same time, the size change motor 127 is rotated to change the size of the interior trunk tensioning device 108 to the new size. Hereinafter, the inner edge folding device 109. Exterior device 110. Exterior taping device 111, bundle accumulation device 112
is changed to the new size after dispensing the final accumulated bundle.

In this way, each device in the stacking section and packaging section is changed to a new size after discharging the final stacked bundle.

After that, as described above, the stacking of sheets of the new size is started, and when a predetermined number of sheets have been stacked, the packaging section 35
and package it.

〔Effect of the invention〕

As described above, according to the present invention, a manual size change start command as in the conventional method is no longer necessary, so that size switching can be performed quickly. Furthermore, since there is no need to stop the line when changing sizes, sheet processing capacity can be greatly improved on lines where size changes are frequent.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a cutting and packaging line in which the present invention is implemented. FIG. 2 is an explanatory diagram showing a sending section size change control device. FIG. 3 is an explanatory diagram showing the configuration of the accumulation section. FIG. 4 is an explanatory diagram showing the packaging process. FIG. 5 is an explanatory diagram showing the configuration of the packaging section. 10... Roll 11... Web 14... Slifter 18... Cutter 23... First gate 28... Second gate 30... First accumulating section 32... Second accumulating section 50... Defect detection sensor 83.84,123,127,131,136°141
．． 144... Motor for size change. Procedural amendment November 20, 1985 Patent Application No. 237694 2, Name of the invention Size change system in sheet cutting/packaging line 3, Relationship with the person making the amendment Case Patent applicant address Minamiashigara, Kanagawa Prefecture City Nakanuma 210 address name (520
) Fuji Photo Film Co., Ltd. 4, Agent ■170 2-16-9 Kita-Otsuka, Toshima-ku, Tokyo Voluntary 6, Subject of amendment (1) Figure 4 of the drawing 7, Contents of amendment Figure 4 has been revised as per the attached sheet. do.

Claims (2)

[Claims] (1) In the sheet cutting/packaging line where the web is unwound from the coil and cut into a predetermined size, the resulting sheets are stacked and packaged, immediately before changing the sheet size to the new size, the old size When the last sheet is cut, the position of the final sheet is tracked by measuring the amount of movement of the belt conveyor that conveys this final sheet, and it is confirmed that this final sheet has been stacked in the first stacking section. When detected, the final stacked bundle including this final sheet is sent to the packaging section, and after this sending, the size of the first stacking section is changed to a new size, and each process in the packaging section sends the final stacked bundle to the next process. After cutting, the size is changed sequentially, and the conveyance position of the first sheet of the new size is tracked.
Before the first sheet reaches the gate that divides it into the first stacking section and the second stacking section, this gate is activated so that the first sheet is put into the second stacking section whose size has been changed to a new size. This is a size change system for sheet cutting and packaging lines. (2) The sheet cutting/packaging line according to claim 1, wherein the packaging section comprises the steps of bundle taping, interior sheathing, interior edge folding, exterior wrapping, exterior taping, and bundle stacking. Resize system in.