JP2011084383A - Paper carrying synchronizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To process paper in a short carrying passage regardless of the paper ejecting timing of a paper carrying synchronizer for synchronizing the paper ejecting timing of a preprocessing machine with the processing timing of a postprocessing machine for processing the paper. <P>SOLUTION: This paper carrying synchronizer C arranged between the preprocessing machine B for ejecting the paper with every one sheet in order and the postprocessing machine E for ejecting a paper bundle of stacking by one volume, comprises carrying passages c1 and c2 branching off in parallel by two pieces for carrying the carried-in paper P1, a switching gate 4 for switching the carried-in paper P1 in the predetermined timing to any of the carrying passages c1 and c2 and paper stacking devices 5 and 6 in the respective carrying passages c1 and c2. The paper bundle stacked by the paper stacking devices 5 and 6 is alternately carried out to the postprocessing machine E in response to switching of the switching gate 4, and its carrying-out time interval is set by a time when stacking by the paper stacking device 5 or 6. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a sheet conveyance synchronization device that synchronizes the unloading timing of a pre-processing machine that unloads each sheet and the processing timing of a post-processing machine that processes unloaded sheets.

For example, a roll paper is fed out, a continuous paper printed one after another in order from the last page constituting one booklet, a cutter device that cuts and discharges each page, and one paper sheet are stacked, and the paper bundle is bound. In some cases, it is connected to the binding machine to be carried out. In this case, when pulling out the cut paper with the cutter device, the leading edge of the roll paper collides with the cut paper unless the paper is pulled out at a speed faster than the flow speed of the roll paper, and the speed is increased. If it is too high, there will be inconveniences such as the conveyance of the paper cut at the drawing destination being disturbed. Therefore, the drawing speed is set to a speed that does not cause these inconveniences. Therefore, there is a predetermined interval between the cut paper and the next cut paper. A time interval is formed.

On the other hand, in the binding machine, one sheet of paper is stacked at the binding position and then bound, and after binding, the paper is discharged from that position (to place the next booklet paper at the binding position). After stacking the sheets, it takes time for binding and discharging. If the time required for the binding and discharge processing (hereinafter referred to as binding processing time) is within the time interval when the paper is pulled out from the cutter device, the binding machine and the cutter device can be directly connected. However, a cutter device that normally discharges one sheet at a time, such as the above-described cutter device, has a relatively high printing processing speed, so this time interval is smaller than the binding processing time. The machine and the cutter device cannot be directly connected.

Therefore, conventionally, a paper transport device is inserted and arranged between such a cutter device and a binding machine, and the interval between the first page of the booklet and the last page of the booklet is controlled by controlling the transport speed of the paper transport device. The last page is packed into the previous page to open the time required for the binding process between booklets, and this process is performed within the open time. In other words, the discharge timing of the cutter device and the binding processing timing of the binding machine are synchronized by the paper transport device.

Japanese Patent Laid-Open No. 10-114441

  However, in such paper conveyance synchronization, for example, when the printing process speed is further increased and the time interval between sheets discharged by the cutter device is reduced, the time required for performing the binding process only by packing the last page on the previous page. In order to gradually reduce the interval between the pages, a plurality of paper conveying devices as described above are necessary, and the paper conveying path is lengthened, and the device that connects the cutter device and the binding machine is There was a problem that it became very large.

The problem to be solved by the invention is that the paper discharge timing of the pre-processing machine and the processing timing of the post-processing machine that processes the paper are synchronized with each other regardless of the paper discharge timing of the paper transport synchronization device, This is to eliminate such a problem.

In order to solve the above-described problems, the present invention provides a pre-processing device that discharges each sheet of paper across a booklet in order of pages and a post-processing device that discharges a bundle of sheets stacked in one page order. In the paper transport synchronization device arranged between the two, the paper transport synchronization device is arranged at a predetermined timing on one of two transport paths branched in parallel and transports the loaded paper to the branched transport path. A switching gate for switching, and a paper stacking device that is provided in each of the branched transport paths and stacks sheets carried into the transport path selected by switching of the switching gates, and when the switching gate is switched, the paper stacking apparatus Is configured to carry out the sheet bundle accumulated in step (b) to the post-processing machine.

In the present invention, the sheet discharged from the pre-processing machine is divided into two for each predetermined number of sheets, each of which is collected by the paper stacking apparatus, and is transported from the stacked sheet bundle to the post-processing machine in the switching gate switching order. It is possible to open the time interval of the bundle of sheets conveyed to the extent that the sheets are accumulated by one of the sheet accumulating apparatuses. Therefore, by setting the number of sheets to be accumulated by the two sheet accumulating apparatuses, the time interval of the sheet bundle conveyed to the post-processing machine is greatly adjusted even though the interval between the pre-processing machine and the post-processing machine is short (maximum , Each sheet stacking apparatus can stack one sheet of paper). With this adjustment, even if the paper discharge timing period of the pre-processing machine is short, the timing can be synchronized with the processing timing of the post-processing machine that processes the paper.

It is a side view which shows the structure of the paper conveyance synchronizing apparatus which concerns on the Example of this invention in the state which connected the pre-processing machine and the post-processing machine. It is a display screen figure of the paper conveyance synchronizing apparatus which concerns on the other Example of this invention. It is a side view showing a configuration when a paper feeding device is arranged between a paper transport synchronization device and a post-processing machine according to an embodiment of the present invention. It is a side view which shows the structure of the paper conveyance synchronizing apparatus which concerns on the other Example of this invention in the state which connected the pre-processing machine and the post-processing machine.

Hereinafter, a paper transport synchronization apparatus according to an embodiment of the present invention will be described with reference to FIG. In the embodiment, the pre-processing machine is a cutter device that rolls out roll paper, performs printing in the order of stacking, and cuts and discharges each page. It is a binding machine that binds with wire. In FIG. 1, A is a printing apparatus that delivers roll paper P0 from a paper roll 1 and prints it in the order of stacking, and discharges it. B is a cutter apparatus that cuts roll paper P0 discharged from a printing machine by a cutter 2 for each page. C is a paper transport synchronization device, which will be described later, D is a paper feeding device for supplying a cover, and E is a binding machine. Note that reference numeral 12 denotes a control unit provided with an arithmetic processing unit of the paper conveyance synchronization device C (not shown). Input panels S1 to S6 for inputting set values necessary for the control are paper detectors.

The printing apparatus A feeds the roll paper P0 from the paper roll 1, prints it in the stacking order (in order from the sheet positioned at the bottom of the stacked sheet bundle), and sends it to the cutter apparatus B. The roll paper P0 is cut and discharged by the cutter 2 for each page. The discharged paper P1 is drawn by the carry-in roller 3 of the paper transport synchronization device C. In this case, the drawing speed by the carry-in roller 3 is maintained at the optimum value set by inputting from the input panel 12 the distance d1 between the leading edge of the roll paper P0 and the trailing edge of the cut paper P1 based on empirical rules. Are controlled by a control device (not shown). For example, when the conveyance speed of the roll paper P0 is 180 mm / min and the size of the cut paper is 297 mm, the optimum interval d1 is 40 mm.

In this example, in order to stably maintain this distance d1, the control apparatus transports the optimum distance d1 / roll paper P0 between the sheets (in the above case, 40 mm / 180 mm), that is, the conveyance speed amplification factor (described above). 0.135), and the speed obtained by multiplying the obtained transport speed gain by the transport speed of the roll paper P0 in addition to the transport speed of the roll paper P0 (in the above case, 204.3 mm / min), the speed of the carry-in roller 3 is controlled. The transport speed of the roll paper P0 is equivalent to the discharge speed of the cutter device.

The paper conveyance synchronization device C has conveyance paths c1 and c2 branched into two upper and lower portions almost immediately after the carry-in roller 3, and a switching gate 4 is disposed at the branch point, and each of the conveyance paths c1 and c2 The paper stacking device 5, the paper bundle standby carry-out device 7, the paper stacking device 6, and the paper bundle standby carry-out device 8 are arranged. That is, when the switching gate 4 is switched so that the loaded paper moves on the transport path c1, the paper that sequentially moves on the transport path c1 is collected by the paper stacking device 5, and the stacked paper bundle is transported to the paper bundle standby carry-out device 7. Send to. In addition, when the switching gate 4 is switched so that the loaded paper moves on the transport path c2, the paper that sequentially moves on the transport path c2 is collected by the paper stacking device 6, and the stacked paper bundle is transported to the standby state of the paper bundle. Send to 8.

Next, when the switching gate 4 is switched so that the loaded paper moves on the conveyance path c1, the sheet bundle waiting on the sheet bundle standby carry-out device 7 is carried out to the binding machine E, and the sheets sequentially moved on the conveyance path c1. Stacking is performed by the sheet stacking device 5. Similarly, when the switching gate 4 is switched so that the loaded paper moves on the conveyance path c2, the paper bundle waiting on the paper bundle standby carry-out device 8 is carried out to the binding machine E, and the sheets sequentially moved on the conveyance path c2 are transferred. Stacking is performed by the sheet stacking device 6. This operation is repeated thereafter. That is, the time interval of the sheet bundle for carrying out the sheet bundle to the binding machine E is the time during which the sheet stacking apparatus 5 or 6 is collecting.

For example, switching of the switching gate 4 is carried in from the timing when the last page for one book has been carried in, specifically when there is a discharge signal for the last page sent from the cutter device B. When the delay time set based on the paper size and speed (input from the input panel 12) has elapsed, one sheet of paper is collected by the paper stacking device 5 (one paper is placed on the uppermost sheet). The first page is printed, and the last page of one book is printed on the bottom sheet.) After the stacking, the next sheet is stacked by the sheet stacking device 6 ( The first page is printed on the top sheet, the last page is printed on the bottom sheet), and the next sheet is printed on the paper stacker. 5 is accumulated.

The two conveyance paths c1 and c2 are merged almost immediately after the sheet bundle standby unloading devices 7 and 8, and the sheet bundle waiting at the sheet bundle standby unloading devices 7 and 8 is sequentially loaded into the sheet feeding device D. It is sent to the binding machine E via the path 9 and the internal conveyance path 10. When the cover sheet H is set on the sheet feeder 11 of the sheet feeder D and this cover sheet H is stacked on the upper surface of the sheet bundle sent to the binding machine E, it is almost the same as the loading of the sheet bundle into the binding machine E. At the same time, the paper feeder 11 is driven, and the cover sheet H is stacked on the sheet bundle to be carried. The binding machine E performs the binding process when one sheet of paper is aligned. If the first page is printed on the bottom surface of a bundle of sheets, the cover H is supplied to the binding machine E before the bundle of sheets is loaded. .

If the switching of the switching gate 4 is the timing when the last page of one book has been carried in, the time interval of the bundle of sheets carried into the binding machine E is obtained by stacking one sheet of paper with the paper stacking device 5 or 6. However, it is assumed that the number of sheets for one book is the same, the one sheet is divided into two, for example, and the divided two sheets are stacked by the sheet stacking devices 5 and 6, respectively. In this case, the time interval of the sheet bundle to be carried out to the binding machine is halved. That is, the time interval between the bundles of sheets to be carried out can be adjusted by the number of sheets stacked by the sheet stacking devices 5 and 6 (set by inputting from the input panel and switched by the switching gate 4 every time the set number of sheets is stacked). it can. With this adjustment, it is possible to accurately match the processing timing of the post-processing device, and it is possible to suppress a reduction in operating efficiency of the post-processing device E.

The paper detector S1 detects the loaded paper, and the paper detector S2 detects the paper that moves to the paper stacking device 5. As a result of this detection, it is possible to know how many sheets have been stacked on the sheet stacking apparatus 5 by moving the transported sheet c. The paper detector S3 detects the paper that moves to the paper stacking device 6. As a result of this detection, it is possible to know how many sheets have been stacked on the sheet stacking device 6 by moving the transported sheet c. The sheet detector S4 detects the sheet moving to the sheet bundle standby carry-out device 7. By this detection, it can be known that the sheet bundle accumulated in the sheet accumulation device 5 has moved to the sheet bundle standby carry-out device 7. The sheet detector S5 detects the sheet moving to the sheet bundle standby carry-out device 8. By this detection, it can be known that the sheet bundle accumulated in the sheet accumulation device 6 has moved to the sheet bundle standby carry-out device 8. The paper detector S6 detects the paper to be carried out.

As a single screen on the input panel 12, the layout of the paper transport synchronization device C is displayed as an image, as shown in FIG. 2, and changes every moment based on the detection information detected by each of the paper detectors S1 to S6. The flow of paper is displayed as an image on the layout. In FIG. 2, portions corresponding to the respective portions of the paper conveyance synchronization device C shown in FIG. That is, P1 is a loaded paper section, c1 and c2 are transport path sections, 5 and 6 are sheet stacking apparatus sections, 7 and 8 are sheet bundle standby carry-out apparatus sections, Px is a stack of sheets being stacked, and Pn is This is a stack of sheets that have been stacked.

In FIG. 2A, the state where the loaded paper P1 flows through the transport path c1 and is collected by the paper stacking device 5 is displayed, and Px sheets (the count number is also displayed) on the paper stacking device 5 at the time of illustration. Are accumulated. In FIG. 2B, the state where the loaded paper P1 flows through the conveyance path c2 and is collected by the paper stacking device 6 is displayed, and Px sheets (the count number is also displayed) on the paper stacking device 6 at the time of illustration. Are accumulated. Then, the sheet bundle Pn (the number of sheets may be displayed) that has been collected by the sheet stacking apparatus 5 has moved to the sheet bundle standby carry-out apparatus 7. In FIG. 2C, the state where the loaded paper P1 flows through the transport path c1 and is collected by the paper stacking device 5 is displayed, and Px sheets (the count number is also displayed) on the paper stacking device 5 at the time of illustration. Are accumulated. Then, the sheet bundle Pn (the number of sheets may be displayed) that has been collected by the sheet stacking apparatus 6 has moved to the sheet bundle standby carry-out apparatus 8. At this time, the sheet bundle waiting in the sheet bundle standby carry-out device 7 is carried out.

By displaying in this way, the behavior of the sheet in the sheet conveyance synchronization device C can be grasped at a glance, and it becomes easier to identify and maintain the trouble, and to reduce the trouble and time required for identifying and maintaining the trouble. it can. Also, the display to the user of the paper transport synchronization device C is simplified by showing this display.

In addition, as shown in FIG. 3, a paper supply unit for supplying paper to be inserted into a single booklet (maximum of 3 units, 2 units in the drawing) between the paper transport synchronization device C and the paper feeding device D that supplies the cover. When the same paper feeding devices D1 and D2 as the paper device D are provided, bookbinding with high added value can be obtained. For example, when inserting another printed sheet after the bound booklet cover, the sheet to be inserted into the sheet feeding device D1 and / or D2 is set and the sheet bundle carried out from the sheet stacking device 5 or 6 is loaded. The sheet is fed to the binding machine E, and the cover of the sheet feeding device D is stacked on the stacked sheet bundle. When inserting in the middle of the sheet bundle, the number of sheets to be stacked up to the position where the sheet stacking apparatus 5 is inserted is set, and the remaining number of sheets is set in the sheet stacking apparatus 6. Then, when the sheet bundle accumulated by the sheet accumulation device 5 is carried out, the sheets set in the sheet feeding device D1 and / or D2 are supplied to the sheet bundle. However, it is necessary to consider that the time interval between the bundles of sheets to be carried out is set depending on the number of sheets stacked by the sheet stacking devices 5 and 6, but separately printed sheets are inserted at arbitrary positions for one book. be able to.

FIG. 4 shows the configuration of a paper transport synchronization apparatus C according to another embodiment. The difference from the embodiment shown in FIG. 1 is that in the embodiment shown in FIG. The sheet bundle standby carry-out devices 7 and 8 are arranged in each of c2, but in the embodiment shown in FIG. 2, the sheet bundle standby carry-out device 12 is almost immediately after the junction of the two conveyance paths c1 and c2. The sheet bundle standby carry-out device 13 is arranged in series with the sheet bundle standby carry-out device 12.

In this case, when the switching gate 4 is switched so that the loaded paper moves on the transport path c1, the paper that sequentially moves on the transport path c1 is collected by the paper stacking device 5, and the stacked paper bundle is carried out in the standby mode. Send to device 12. Further, when the switching gate 4 is switched so that the loaded paper moves on the conveyance path c2, the sheet bundle of the sheet bundle standby carry-out device 12 is sent to the paper bundle standby carry-out device 13, and the sheets sequentially moving on the conveyance path c2 are transferred. The sheets are stacked by the sheet stacking device 6, and the stacked sheet bundle is sent to the sheet bundle standby carry-out device 12.

Next, when the switching gate 4 is switched so that the loaded paper moves on the transport path c1, the paper bundle waiting in the paper bundle standby carry-out device 13 is carried out to the binding machine E, and is waited in the paper bundle standby carry-out device 12. The sheet bundle is sent to the sheet bundle standby carry-out device 13, and sheets that sequentially move in the conveyance path c <b> 1 are accumulated by the sheet accumulation device 5. Similarly, when the switching gate 4 is switched so that the loaded paper moves on the transport path c2, the paper bundle waiting in the paper bundle standby carry-out device 13 is carried out to the binding machine E, and is waited in the paper bundle standby carry-out device 12. The sheet bundle is sent to the sheet bundle standby carry-out device 13, and sheets that sequentially move in the conveyance path c <b> 2 are collected by the sheet stacking device 6. This operation is repeated thereafter. That is, the time interval of the sheet bundle for carrying out the sheet bundle to the binding machine E is the time during which the sheet stacking apparatus 5 or 6 accumulates, as in the embodiment shown in FIG. Of course, as in the embodiment shown in FIG. 1, if the switching of the switching gate 4 is the timing when the last page of one book has been loaded, the time interval of the sheet bundle carried out to the binding machine E is one book. Minutes of paper are accumulated.

A Printing machine B Cutter device C Paper transport synchronization device D Cover paper feeder E Binding machine 1 Paper roll 2 Cutter 3 Loading roller 4 Switching gates 5 and 6 Paper stacking devices 7 and 8 Paper bundle standby carry-out device 10 Paper feeder 12 Input panel 13, 14 Sheet bundle standby carry-out device c1, c2 Conveyance paths S1-S6 Paper detector

Claims (6)

In the paper transport synchronizer disposed between a pre-processing device that discharges each sheet of paper across the booklet in order of pages and a post-processing device that discharges a bundle of sheets stacked in order of pages, the paper transport The synchronizer is provided in each of the two conveyance paths branched in parallel for conveying the loaded paper, the switching gate for switching the loaded paper to one of the branched conveyance paths at a predetermined timing, and the branched conveyance path. And a paper stacking device that stacks the paper carried into the transport path selected by switching the switching gate, and when the switching gate is switched, the paper stack stacked by the paper stacking device is carried out to the post-processing device. A paper conveyance synchronization device characterized by comprising: 2. The paper transport synchronization device according to claim 1, further comprising a paper bundle standby carry-out device that is connected to the paper stacking device and waits for carrying out of the paper bundle collected by the paper stacking device. Calculate the carry speed amplification factor from the optimum paper spacing and the paper speed when ejected from the preprocessor, and the paper speed when ejected to the paper speed when ejected. 2. The paper transport synchronization apparatus according to claim 1, wherein the speed is automatically controlled to a speed obtained by adding the speed multiplied by the amplification factor. 2. The display unit according to claim 1, further comprising display means for displaying, as images, a lay-out of a conveyance path provided with a paper stacking device for moving paper and a paper that moves on the lay-out. Paper transport synchronization device. 2. The paper conveyance synchronization apparatus according to claim 1, wherein two conveyance paths branched in parallel are arranged vertically. 2. The paper transport synchronization apparatus according to claim 1, wherein a plurality of paper feeders are arranged in front of the post-processing machine.

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