JP2005067789A - Book binding system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a book binding system capable of preventing leaves of paper from being damaged by allowing any operator to adjust the roller spacing so as to suit the thickness of the bound leaves quickly irrespective of the length of experience which the operator possesses. <P>SOLUTION: The book binding system comprises a book-binding machine 100 capable of making middle stapling and middle folding, a leaves supplying device 200 to supply leaves of paper to the book-binding machine 100, and a cutting machine 300 to cut in alignment the end part of the obtained booklet consisting of the middle folded leaves. The supplying device 200 is furnished with sheet stack sensors 220 installed at the respective racks for sheet stacking 210 for sensing the information about the number of sheets contained in one booklet to be supplied to the book-binding machine 100, and on the basis of the obtained information, the folding spacing of the leaf folding roller part 150 of the book-binding machine 100 and the press roller spacing of the press roller part 160 are adjusted automatically. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bookbinding system, and more particularly to a bookbinding system capable of performing saddle stitching and center folding on a booklet sheet.

In a bookbinding system that stacks multiple sheets of paper for one booklet and finishes them into one book, some of the types of binding process bind the center part. In this case, the binding process was performed. Thereafter, the bending process is often performed at this binding position.
An example of such a bookbinding system capable of saddle stitching and center folding is shown in FIG.

This bookbinding system includes a bookbinding machine 100x, a paper supply device 200x by a collating machine that supplies paper to the bookbinding machine 100x, and a post-processing machine that further folds the booklet folded in half by the bookbinding machine 100x. A press roller section 160x;
These details are as follows.

  The paper supply device 200x includes a plurality of paper stacking shelves 210x. Each of the paper stacking shelves 210x stacks a plurality of sheets of paper 500, and one sheet 500 is loaded from the paper stacking shelves 210x. The paper is sequentially taken out and supplied to the bookbinding machine 100x.

The bookbinding machine 100x conveys the paper 500 supplied from the paper supply device 200x to the binding unit 120x through the conveyance path 110x and collects it into one booklet, and the binding unit 120x binds the booklet such as saddle stitching. Process. Further, the sheet for one booklet subjected to the saddle stitching process is sent to the folding unit 130x and subjected to the middle folding process by the folding knife 140x and the folding roller unit 150x.
One booklet sheet that has been subjected to half-fold processing by the bookbinding machine 100x is sent to the press roller unit 160x of the post-processing machine, passes through the conveyance path 167x, and is urged in a direction approaching each other by the spring 163x. Are further folded by the press roller 161x, and are sent to the next processing apparatus, for example, a small sheet cutter, as a sufficiently folded booklet.

In this bookbinding system, further folding of the half-folded booklet is performed by a pair of press rollers 161x biased by a spring 163x, even if the thickness of the booklet changes. The spring 163x is covered with the elastic force (see, for example, Patent Document 1).
Further, when the change in the thickness of the booklet is large, the operator manually adjusts the roller interval.

On the other hand, when the sheet is folded in half, there is an example in which the distance between the pair of folding rollers is adjusted in accordance with the thickness of the sheet.
FIG. 10 shows an example applied to a printing press.
In this example, when the paper 500 is folded by the chopper blade 410 and the chopper roller 420, the paper 500 has a function of adjusting the distance between the chopper rollers 420 according to the thickness of the paper 500. The screw shaft 440 is rotated according to the paper thickness selected and measured by the paper thickness measuring means 452, the interval of the arms 430 is controlled by the rotation of the screw shaft 440, and the chopper roller 420 rotatably attached to the arm 430 is rotated. The interval is adjusted (see, for example, Patent Document 2).

Further, in the small edge cutter, the folded booklet is conveyed while being sandwiched between the upper and lower conveyor belts, and the front end portion is positioned in contact with the stopper, and the small edge is cut. Form a gap at the entrance of the conveyor belt among the rollers on which the conveyor belt is hung in order to hold a booklet of various thicknesses from the inflated one to a small one with a small thickness. A mechanism for manually adjusting the interval between the rollers is provided.
Japanese Patent Laid-Open No. 9-248979 (FIG. 4) JP-A-7-237812 (FIG. 1)

  In the bookbinding system described above, the press roller 161x is biased by the spring 163x, and usually the elastic force of the spring 163x copes with the change in the thickness of the paper 500, but when the change in the paper thickness is large. Since the operator manually adjusts the roller interval, the amount of adjustment differs depending on the operator, and if it is too wide, the roller pressure against the booklet is weak, and a sufficient conveying force cannot be obtained and slipping occurs. When the conveyance is poor and the booklet is too narrow, the booklet is not easily inserted between the rollers, resulting in a conveyance failure or misalignment of the aligned sheets, leading to a loss of sheets.

Also, since the operator also manually adjusted the roller spacing at the entrance of the conveyor belt of the small sheet cutter, the adjustment amount differs depending on the operator, and if it is too wide, sufficient transport force cannot be obtained, and it is too narrow However, there is a problem that the booklet is not held between the conveyance belts, and both of them are defective in conveyance. In addition, if the operator has little experience, there is a problem that it takes time for adjustment time.
Also, as shown in FIG. 10, there is a means for adjusting the roller interval according to the paper thickness, but since the object is a single sheet, the adjustment range is small and it is difficult to apply to a booklet-shaped one. There is a problem.

  In view of the above problems, the object of the present invention is to make a bookbinding capable of adapting the roller interval to the thickness of the paper and booklet in a short time regardless of the experience of the operator and preventing paper loss. To provide a system.

The bookbinding system of the present invention comprises:
A bookbinding machine that performs saddle stitching on the fed sheets for each booklet, and then performs a center folding process on the saddle-stitched booklet with a pair of folding rollers, and a paper supply for feeding the paper to the bookbinding machine A booklet system comprising: a booklet sheet thickness detecting means for detecting information relating to the thickness of a booklet sheet to be saddle-stitched and folded in the bookbinding machine; The bookbinding machine is provided with folding roller interval adjusting means for automatically adjusting the interval between the pair of folding rollers based on the information about the thickness of one booklet by the detecting means.

Further, the booklet sheet thickness detecting means detects the number of sheets of one booklet and uses it as information on the thickness of one booklet,
Either detect the thickness of each of the paper for one booklet, calculate the thickness of the paper for one booklet, and use it as information on the thickness of the paper for one booklet,
It has a configuration in which the thickness of one stacked booklet is detected and used as information regarding the thickness of one booklet.

  The bookbinding machine further includes a pair of press rollers for stabilizing the folded state of the booklet that has been subjected to the middle folding process with the pair of folding rollers, and the interval between the pair of press rollers is set to It has a configuration in which press roller interval adjusting means for automatically adjusting based on information on the thickness of one booklet by the one booklet paper thickness detecting means is provided.

  Further, the folding roller interval adjusting means of the bookbinding machine adjusts the rotation axis interval of each pair of folding rollers, and the folding roller interval adjusting cam is used as the one booklet sheet thickness detecting means. And a drive unit that rotationally drives based on the information on the thickness of the paper for one booklet from the press roller spacing adjusting means for adjusting the spacing between the rotation axes of the pair of press rollers. An adjustment cam and the drive unit that rotationally drives the press roller interval adjustment cam are configured.

  Further, in addition to the bookbinding system, the booklet includes a cutting machine that cuts the edge portion of the booklet that has been saddle-stitched and folded in the bookbinding machine, and the cutting machine is driven by an upper conveying roller. And a lower conveying belt driven by the lower conveying roller, the booklet that has been folded in half is sandwiched between the upper conveying roller, positioned, and the fore edge portion is cut. The upper conveying roller and the lower conveying roller Is automatically adjusted based on information on the thickness of one booklet sheet from the one-booklet sheet thickness detecting means.

  In the bookbinding system of the present invention, information relating to the thickness of one booklet is detected by one booklet paper thickness detecting means, and based on this information, a pair of roller intervals and a pair of press roller intervals of the bookbinding machine. Since it is not necessary for the operator to adjust the roller interval manually, the roller interval can be adjusted to the thickness of the paper and booklet in a short time regardless of the operator's experience. Thus, it is possible to prevent paper loss.

The best mode of the present invention is:
A bookbinding machine that performs saddle stitching on the fed sheets for each booklet, and then performs a center folding process on the saddle-stitched booklet with a pair of folding rollers, and a paper supply for feeding the paper to the bookbinding machine A booklet system comprising: a booklet sheet thickness detecting means for detecting information relating to the thickness of a booklet for saddle stitching and folding performed by the bookbinding machine; The bookbinding machine is provided with folding roller interval adjusting means for automatically adjusting the interval between the pair of folding rollers based on the information on the thickness of the paper for one booklet by the detecting means,
The booklet that has been folded in half by the pair of folding rollers is further provided with a pair of press rollers that stabilize the folding state, and the distance between the pair of press rollers is determined by the one booklet sheet thickness detecting means. It has a configuration provided with press roller interval adjusting means for automatically adjusting based on information on the thickness of one booklet.

  FIG. 1 is a side view of the arrangement of each part showing the entire bookbinding system of the present invention, FIG. 2 is a side view of a folding part of the bookbinding machine of Example 1, and FIG. 3 is a view of the folding roller part seen from three directions. 4 is a view of the press roller portion viewed from three directions, and FIGS. 5A and 5B are side views of the folding roller interval adjusting cam and the press roller interval adjusting cam.

The main configuration of the bookbinding system according to the first embodiment includes a bookbinding machine 100 that can perform saddle stitching and folding, a paper supply device 200 such as a collator that supplies paper to the bookbinding machine 100, and saddle stitching by the bookbinding machine 100. A cutting machine 300 for cutting the folded paper and the small edge portion of the booklet;
The details are as follows.

First, the bookbinding machine 100 conveys the paper 500 supplied from the paper supply device 200 to the binding unit 120 through the conveyance path 110 and collects it into one booklet. A binding process such as binding is performed.
Further, the booklet sheet that has been subjected to the saddle stitching process is sent to a folding section 130 including a folding knife 140, a folding roller section 150, and a press roller section 160, and is folded and folded at the saddle stitching section. Attaching is performed, and the paper is sent to the cutting machine 300 via the discharge unit 180.

  On the other hand, the paper supply device 200 that supplies paper to the bookbinding machine 100 includes a plurality of paper stacking shelves 210, and each of these paper stacking shelves 210 is loaded with a plurality of papers. The sheets are sequentially taken out from the stacking shelf 210 one by one and supplied to the bookbinding machine 100. Each paper stacking shelf 210 is provided with a paper stacking detection sensor 220 including a light emitting unit and a light receiving unit. The paper stacking detection sensor 220 detects the presence or absence of paper stacking on each paper stacking shelf 210. Then, the information on the number of sheets of one booklet supplied to the bookbinding machine 100 is supplied to the bookbinding machine 100 as information relating to the thickness of one booklet supplied to the bookbinding machine 100 (one booklet sheet thickness detecting means).

Further, as a method for obtaining the number of sheets of information for one booklet, the number of sheets for one booklet may be input from the operation panel of the sheet supply apparatus 200 or the bookbinding machine 100.
The bookbinding machine 100, which has received the information on the number of sheets for one booklet from the sheet supply apparatus 200, is configured by a pair of folding rollers 151 (hereinafter simply referred to as the folding roller 151) based on the information on the number of sheets for one booklet. The interval and the interval between the paired press rollers 161 (hereinafter simply referred to as the press roller 161) are adjusted (roller interval adjusting means).

  The structure for adjusting the interval between the folding rollers 151 includes a folding roller lever 152 that rotatably holds the folding roller 151 at both ends, and a spring that biases the folding roller lever 152 in a direction in which the folding rollers 151 approach each other. 153 and the camshaft 154 are rotated, and the folding roller lever 152 is rotated about the fulcrum 152-N via the folding cam follower 156 to adjust the interval between the folding rollers 151. A saddle stitcher step motor 171, a motor gear 172, a reduction gear 173, a reduction shaft 174, which rotates based on the information on the number of sheets of one booklet, which rotates the cam 155 and the folding roller interval adjustment cam 155, The drive part 170 which consists of the worm gear 175 and the worm wheel 176 is comprised.

  Further, the structure for adjusting the distance between the press rollers 161 includes a press roller lever 162 that rotatably holds one of the pair of press rollers 161 at both end portions thereof, and the press roller lever 162 includes the press roller 161. Are rotated around the cam shaft 154 and the press roller lever 162 is rotated around the fulcrum 162-N via the press cam follower 165, and the press roller 161 is rotated. A press roller interval adjusting cam 164 for adjusting the interval of the press roller, and a folding roller driving unit 170 and a common driving unit 170 for rotating the press roller interval adjusting cam 164 are configured.

As shown in FIG. 5A, the folding roller interval adjusting cam 155 is symmetric with respect to the rotation axis thereof, so that both the pair of folding rollers 151 are moved to adjust the interval. It has become. On the other hand, as shown in FIG. 5B, the press roller interval adjusting cam 164 is asymmetric with respect to the rotation axis thereof, so that one of the pair of press rollers 161 is moved and moved. The interval is adjusted.
The interval between the folding rollers 151 and the interval between the press rollers 161 can be adjusted by the number of rotation pulses to the saddle stitcher step motor 171 based on the number of sheets of information for one booklet from the sheet supply device 200. The number of sheets is set in a plurality of stages (for example, 10 stages).

In the first embodiment, the folding roller interval and the press roller interval of the bookbinding machine 100 are automatically adjusted according to the number of sheets as the sheet thickness information for one booklet from the sheet supply apparatus 200. If the thickness information is set in advance, it is possible to ensure that these roller intervals are adapted to the paper thickness of one booklet without human intervention, resulting in paper conveyance failure and paper loss. In addition, the operation and work can be facilitated, operation errors can be eliminated, and the operation can be performed in a short time.
Even if the sheet thickness changes within the specifications of the bookbinding system, setting of sheet thickness information for one booklet can be omitted as long as the amount of change is not considered in adjusting the roller interval.
In the first embodiment, the folding roller interval and the press roller interval are adjusted based on the information detected by the sheet stacking detection sensor 220. However, in the drawings and specification, an electric circuit between them is used. The electronic circuit is omitted (also omitted in the following examples).
In the first embodiment, both the folding roller interval and the press roller interval are adjusted. However, only one of the folding roller intervals, for example, may be adjusted.

  In the second embodiment, the thickness of each sheet is detected as information on the thickness of one booklet from the sheet supply device 200 to the bookbinding machine 100, and the thickness of each sheet is detected. From this, the thickness of the paper for one booklet is calculated and used as the information (these form the one-booklet paper thickness detecting means), and FIG. 1 (shared with Example 1) shows the entire bookbinding system. FIG. 6 shows a sheet thickness detector 230 (broken line portion in FIG. 1) and its operation for detecting the thickness of the sheet.

  The sheet thickness detector 230 is disposed corresponding to each of the plurality of sheet stacking shelves 210 of the sheet supply apparatus 200, and includes a driving roller 231 and a driven roller 232 disposed in the conveyance path of the sheet 500, and the driven roller. The detection lever 233 that amplifies the movement of the driven roller 232 with respect to the fulcrum 233 -N while holding the 232 rotatably, and the displacement sensor 234 that detects the displacement of the tip portion of the detection lever 233. ing.

  In the second embodiment, the thickness of each sheet is detected, and the folding roller interval and the press roller interval are automatically adjusted more accurately by the thickness of one booklet based on the thickness of each sheet. Compared to the first exemplary embodiment, it is possible to prevent paper conveyance failure and paper loss more reliably.

  In the first embodiment and the second embodiment described above, an example in which the one booklet paper thickness detecting unit is disposed in the paper supply device 200 is shown. However, in addition to the collator, the paper supply device 200 includes a sheet feeder and a set. There are various devices such as feeders and printing machines, and there are various paper feeding methods such as those for supplying sheets one by one to the bookbinding machine 100 and those for supplying one booklet at a time. The arrangement position and configuration may be determined in consideration of the type of the paper feeding device, the paper feeding method, the content of the paper thickness information for one booklet, and the like.

For example, when the sheet supply device 200 is a sheet feeder that takes out sheets one by one from a bundle of sheets stacked in page order and supplies them to the bookbinding machine 100, a counting sensor is provided at a portion that transports the sheets from the sheet feeder to the bookbinding machine 100. And counting the number of sheets passing by the counting sensor to obtain information on the sheet thickness for one booklet. The sheet feeder has a means for recognizing a separation for each booklet of a bundle of sheets stacked in plural pages in order to recognize a separation for bookbinding. Count the number of sheets for one book.
For example, in the case where a separation is recognized by reading a mark printed on the last page of one sheet of a bundle of sheets with a reading sensor, the number of sheets that have passed through to the last page may be counted. In this case, the reading sensor can also be used as a counting sensor. Further, a sheet thickness detector 230 is provided at a portion where the sheet is transferred from the sheet feeder to the bookbinding machine 100, and the thickness of each passing sheet is detected and added, and the sheet thickness for one booklet is added. You can also get information about.

  A set in which the paper supply device 200 collects a single booklet from a plurality of booklets stacked in a separated state by shifting the stacking position of each booklet and supplies the booklet to the bookbinding machine 100. In the case of a feeder, a sheet thickness detector 230 is provided at a portion where the sheet is transferred from the set feeder to the bookbinding machine 100, and the thickness of the sheet bundle for one booklet passed by the sheet thickness detector 230 is detected. Information on the thickness of the booklet may be obtained.

  When the paper supply device 200 is a printing machine, an appropriate method is used depending on the form of paper supply to the bookbinding machine 100. If sheets are supplied to the bookbinding machine 100 one by one in page order from the printing machine, a counting sensor is provided between the printing machine and the bookbinding machine 100 to count the number of sheets, or a sheet thickness detector 230 is provided. The thickness of each sheet passing through is detected and added to obtain information on the sheet thickness for one booklet. If a booklet sheet is collectively supplied from the printing machine to the bookbinding machine 100, a sheet thickness detector 230 is provided between the printing machine and the bookbinding machine 100 so that the thickness of the sheet for one booklet that passes therethrough. And information on the thickness of one booklet is obtained.

In the third embodiment, the present invention is applied to adjust the distance between the upper conveyance belt 310 and the lower conveyance belt 320 of the cutting machine 300. The third embodiment will be described with reference to FIGS. explain.
The booklet that has been folded in half by the bookbinding machine 100 is conveyed by being sandwiched between the upper conveyance belt 310 and the lower conveyance belt 320 from the leading end portion (the middle folding portion), and the leading end portion comes into contact with the stopper 350. After positioning, the fore edge portion is cut by the cutter 331 of the fore edge cutting portion 330 and aligned. An upper conveyance roller 311 and a lower conveyance roller 321 are provided at the booklet entrance portion of the conveyance path formed by the upper conveyance belt 310 and the lower conveyance belt 320, and the interval between these conveyance rollers (311 and 321) is set to the thickness of one booklet sheet. Based on information on the thickness of one booklet sheet from the detection means (information used in the first and second embodiments), the conveyance roller interval control unit 340 automatically adjusts.

  The conveyance roller interval control unit 340 includes a cutting machine step motor 341 that is rotationally controlled based on information on the thickness of one booklet, an angle 346 that rotatably holds the upper conveyance roller 331, and a cutting machine step. A worm gear 342, a worm wheel 343, a screw shaft 344, and a bar 345 configured to transmit rotation of the motor 341 to the angle 346 are configured.

  In the third embodiment, when the booklet folded in half from the bookbinding machine 100 reaches the entrance portion of the conveyance path, the gap in the entrance portion is automatically adjusted according to the thickness of the booklet. Without any problem, the booklet can be introduced into the transport path in order and positioned by abutting the tip of the booklet against the stopper 350, so that the cutting process of the fore edge portion can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of each part arrangement showing an entire bookbinding system for explaining an embodiment of the present invention. It is a side view of the bookbinding machine folding part for explaining Example 1 of the present invention. FIG. 3 is a view of a folding roller portion of the bookbinding machine folding portion shown in FIG. 2 as viewed from three directions. It is the figure which looked at the press roller part part of the bookbinding machine folding part part shown by FIG. 2 from 3 directions. FIG. 3 is a side view of a folding roller interval adjusting cam and a press roller interval adjusting cam of the bookbinding machine folding portion shown in FIG. 2. It is a side view which shows the paper thickness detector and its operation | movement procedure for demonstrating Example 2 of this invention. It is a side view of the principal part of a cutting machine for demonstrating Example 3 of this invention. It is the side view seen from the other direction of the principal part of the cutting machine shown by FIG. It is each part arrangement | positioning side view which shows an example of the bookbinding system in background art. It is an arrangement | positioning side view which shows an example of the roller space | interval adjustment means in background art.

Explanation of symbols

100,100x bookbinding machine 110,110x conveying path 120,120x binding unit 130,130x folding unit 140,140x folding knife 150,150x folding roller unit 151 folding roller 152 folding roller lever 153 spring 154 cam shaft 155 folding roller interval adjusting cam 156 Folding cam follower 160, 160x Press roller unit 161, 161x Press roller 162 Press roller lever 163, 163x Spring 164 Press roller interval adjusting cam 165 Press cam follower 167x Conveying path 170 Drive unit 171 Saddle stitcher step motor 172 Motor gear 173 Reduction gear 174 Deceleration shaft 175 Worm gear 176 Worm wheel 180 Discharge unit 200,200x Paper supply device 210,210x Paper stacking shelf 220 Paper Loading sensor 230 Paper thickness detector 231 Drive roller 232 Driven roller 233 Detection lever 234 Displacement sensor 300 Cutting machine 310 Upper conveyor belt 311 Upper conveyor roller 320 Lower conveyor belt 321 Lower conveyor roller 330 Small edge cutting part 331 Cutter 340 Conveyor roller interval control Section 341 Cutting machine Step motor 342 Worm gear 343 Worm wheel 344 Screw shaft 345 Bar 346 Angle 350 Stopper 400 Printing machine 410 Chopper blade 420 Chopper roller 430 Arm 440 Screw shaft 450 Interval control section 451 Paper thickness selection means 452 Paper thickness measurement means 453 Control unit 454 Control mechanism 500 Paper

Claims (7)

A bookbinding machine that performs saddle stitching on the fed sheets for each booklet, and then performs a center folding process on the saddle-stitched booklet with a pair of folding rollers, and a paper supply for feeding the paper to the bookbinding machine Equipment,
A booklet sheet thickness detecting means for detecting information relating to the thickness of the sheet for one booklet that is saddle-stitched and folded in the bookbinding machine. A bookbinding system, wherein the bookbinding machine is provided with folding roller distance adjusting means for automatically adjusting the distance between the pair of folding rollers based on information on the thickness of one booklet. 2. The bookbinding system according to claim 1, wherein the one-booklet sheet thickness detecting unit detects the number of sheets for one booklet and uses the detected information as information on the thickness of the sheet for one booklet. The one-booklet sheet thickness detecting means detects the thickness of each sheet for one booklet, calculates the sheet thickness for one booklet, and uses it as information regarding the sheet thickness for one booklet. Item 1. A bookbinding system according to item 1. 2. The bookbinding system according to claim 1, wherein the one-booklet paper thickness detecting unit detects the thickness of the stacked one-booklet paper and uses it as information on the thickness of the one-booklet paper. The bookbinding machine is provided with a pair of press rollers for further stabilizing the folding state of the booklet that has been subjected to the middle folding process with the pair of folding rollers, and the distance between the pair of press rollers is set to the one booklet. The bookbinding system according to any one of claims 1 to 4, further comprising a press roller interval adjusting unit that automatically adjusts based on information on the thickness of one booklet by the sheet thickness detecting unit. The folding roller interval adjusting means of the bookbinding machine adjusts the interval between the rotation axes of the pair of folding rollers, and the folding roller interval adjusting cam from the one booklet sheet thickness detecting means. And a drive unit that rotationally drives based on information relating to the thickness of the paper for one booklet, and the press roller interval adjusting means adjusts the interval between the rotation axes of the pair of press rollers. A cam, and the drive unit that rotationally drives the press roller spacing adjustment cam.
The bookbinding system according to claim 5. In addition to the bookbinding system according to any one of claims 1 to 6, the bookbinding system includes a cutting machine that performs cutting processing on a small edge portion of a booklet that has been subjected to saddle stitching and center folding with a bookbinding machine. With a structure in which a booklet that has been folded in half is sandwiched between an upper conveyance belt driven by an upper conveyance roller and a lower conveyance belt driven by a lower conveyance roller, and positioned, and the fore edge portion is cut. Yes, the interval between the upper transport roller and the lower transport roller is automatically adjusted based on the information on the thickness of the paper for one booklet from the one booklet paper thickness detecting means.
A bookbinding system characterized by that.

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