JP2008132655A - Method and device for binding paper sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel method and device for binding paper sheets which enable binding of the paper sheets with a paper string, in form of good appearance similar to that obtained by a wire for wire binding, and enable easy recycling of the paper sheets and which are not only friendly to an end user and capable of reducing an environmental load, but also give stability and certainty particularly to the work of inserting the paper string through passing holes of the paper sheets in mechanical automated working. <P>SOLUTION: The method and equipment for binding paper sheets comprise the humidifying process or means for humidifying the upper and lower sides of the paper sheets 2 or the paper string 8, the perforating process or means for opening one or two or more pairs of passing holes 7 in the paper sheets 2, the insertion process or means for inserting through the passing holes 7 both sides of the paper string 8 coated with a re-humidification adhesive and formed by bending the paper string in the shape of a letter U, and the adhering process or means for bending both ends of the paper string 8 projected from the lower side of the paper sheets 2 and adhering the bent portions to the paper sheets. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paper sheet binding method and apparatus for binding paper sheets by water drawing.

  Conventionally, as a saddle stitch method which is a simple book binding method, there are a method using a wire in a book, a weekly magazine, a catalog, and the like, and a binding method using a thread like a bankbook. Recently, the wire glue binding method has become widespread in consideration of the danger of cuts caused by wire, and furthermore, yarn binding that combines the yarn inside the folded book after cutting the yarn after about three stitches of yarn. Methods are also known.

However, the conventional paper sheet binding method using a wire or a thread is complicated because it is necessary to remove a binding tool such as a wire or a thread when the paper sheet is collected and recycled to paper. The wire is relatively easy to separate, but according to the recovered yarn binding method, the fiber used is generally 25 to 56 mm, and if this is the case, the allowable length of fiber in the pulp when recycled paper is used as it is In order to exceed (about 3 mm), when the paper is recycled, the recovered paper is dissociated into fibers in water with a pulper, and long fibers such as yarn are captured by a screen and discarded. At this time, the yarn fiber may pass through the screen, which causes a problem that the paper is cut in the subsequent paper making process.
Also, in the method of using glue, many of the glue contains EVA resin (Elvax resin, copolymer resin of vinyl chloride and vinyl acetate) that is the source of dioxins. There is a problem that there is a risk of adversely affecting the environment. Moreover, in the method using glue, the thing containing the substance used as the generation | occurrence | production source of dioxin may be used, and there existed a subject that there exists a possibility of having a bad influence on an environment.

In order to solve the above-mentioned problems, that is, a new paper sheet binding method using a paper twisting device that does not require the removal of a binding tool such as a wire or a thread for paper regeneration and that does not cause dioxins. Has been developed by the inventor and the applicant and has already been proposed and publicly known (for example, Patent Document 1).
JP 2006-110873 A

As the paper twist that has been proposed and publicly known, Oji Fiber Co., Ltd.'s T-2240 twisted twist, which is obtained by twisting a thin paper with a width of about 4 mm and twisting two, is suitable. Is about 0.5 mm, the tensile strength is about 30 N (Newton), and the rigidity is somewhat weak. In addition, when the paper sheet is bound by mechanical work by this paper twist, because the paper twist is flexible, the paper twist is hooked on the needle through the fine hole opened in the paper sheet, and the needle is pulled, Both ends of the paper twist are inserted through a pair of pores. The work of inserting the paper twist into the pores has a problem of lacking stability and reliability.
Therefore, the present invention can bind a paper sheet by water-drawing with a good shape similar to a wire binding wire, can easily regenerate the paper sheet, is friendly to the end user, and reduces the environmental load. Provided is a novel sheet binding method and apparatus which can not only be used but also has a stable and reliable insertion operation of a water-drawn sheet through a hole in a mechanical automatic operation. It is.

  For this purpose, the paper sheet binding method of the present invention comprises a wetting step of wetting both upper and lower surfaces or watering of the paper sheet, an opening step of opening a pair or two or more through holes in the paper sheet, and a rewet adhesive. Insertion process to insert both sides of the waterbrush that has been applied and bent into a U-shape, and an adhesion process to fold both ends of the waterbush protruding on the lower surface of the paper sheet and bond this bent part to the paper sheet It consists of

  Further, the paper sheet binding method of the present invention is a water pulling supply step of supplying water pulling applied with rewet adhesive along a pair of through holes above the paper sheet between the opening step and the insertion step. And a cutting step of cutting the water pull into a certain length, and a water pull bending step of bending the water draw into a U-shape at both sides of the interval between the pair of through holes.

The wetting step is by spraying water.
The hole-opening step is due to passing a thick needle through the paper sheet from above to below.
The insertion process is performed by pushing both sides of the water draw downward with a water draw push plate that moves up and down.
The adhering step is based on a bending pressure plate that is located at the lower part of the paper sheet and moves close to, away from, or horizontally.
This is because the above-mentioned water-drawing supply step supplies the water-drawn bent plate that can be moved back and forth on the paper sheet with a feed roller.
The cutting process is performed by a cutter.
The water-drawing bending step is located on both sides of the water-drawing push plate, and is based on the water-drawing bending plate that moves up and down along both sides of the water-drawing push plate and along both sides of the water drawing bend template.

  Further, the paper sheet binding apparatus of the present invention is a coating means for applying wetness means for wetting upper and lower surfaces or watering of the paper sheet, opening means for opening one or more pairs of through holes in the paper sheet, and a rewetting adhesive. Insertion means for passing through both sides of the waterbuck formed into a U-shape and bonding means for bending both ends of the waterbush protruding on the lower surface of the paper sheet and bonding the bent part to the paper sheet It consists of

  Further, the paper sheet binding device of the present invention is a water pull supply means for supplying water pull applied with a rehumidified adhesive along a pair of through holes above the paper sheet between the opening means and the insertion means. Cutting means for cutting the water draw into a certain length, and water draw bend means for bending the water draw into a U-shape at both sides of the interval between the pair of through holes.

The wetting means is by spraying water.
This is because the opening means allows a thick needle to penetrate the paper sheet from above to below.
This is because the inserting means pushes both sides of the water pulling downward and is pushed by a water pulling push plate that moves up and down.
The bonding means is located at the lower part of the paper sheet, and is by a folding pressure plate that moves close to, away from, or horizontally.
This is because the above-described water-drawing supply means supplies the water-drawn bent plate that can be moved back and forth on the paper sheet with a feed roller.
The cutting means is a cutter.
The water-drawing bending means is located on both sides of the water-drawing push plate, and is based on a water-drawing bent plate that moves up and down along both sides of the water-drawing push plate and along both sides of the water drawing bend template.

  The paper sheet binding method according to the present invention includes a wetting step of wetting upper and lower surfaces or watering of the paper sheet, an opening step of opening a pair or two or more through holes in the paper sheet, and applying a rewetting adhesive. The insertion process of inserting both sides of the waterbing that is bent in a U-shape into the through holes, and the bonding process of bending both ends of the waterbing protruding on the lower surface of the paper sheet and bonding the bent part to the paper sheet Therefore, paper sheets can be bound by water pulling with a good appearance similar to wire binding, and when regenerating paper sheets, water pulling is paper, so it is easy to regenerate without removing water pulling. In addition to being effective for the end user, the environmental load can be reduced. Furthermore, there is an effect that the operation of inserting the water-drawn paper sheet in the mechanical automatic work has stability and certainty, and the adhesion of the bent part of the water-drawn paper sheet to the paper sheet can be surely achieved.

  Further, the paper sheet binding method according to the present invention is a water pulling supply for supplying water pulling applied with rewet adhesive along a pair of through holes above the paper sheet between the opening step and the insertion step. Since it comprises a step, a cutting step for cutting the water draw into a fixed length, and a water draw bending step for forming the water draw into a U-shape at both sides of the interval between the pair of through holes, a long water draw is supplied. Thus, there is an effect that paper sheets can be bound continuously.

Since the wetting process is performed by spraying water, the wetting process of the paper sheet is simple.
Since the opening process is performed by passing a thick needle through the paper sheet from above to below, the paper sheet opening process is simple.
Since the insertion process is performed by making both sides of the water draw downward and being pushed in by a water draw pushing plate that moves up and down, the water draw insertion process is reliable.
Since the adhering step is based on a bending pressure plate that is located at the lower part of the paper sheet and moves toward, away from, or horizontally moves, the sheet is wetted by the wet process and the re-wetting adhesive applied to the water sheet. Can be easily bonded.
Since the water-drawing supply step is performed by feeding the water-drawing bent plate that can be moved back and forth on the paper sheet by a feed roller, the water-drawing can be easily supplied.
Since the cutting process is performed by a cutter, it is possible to continuously supply water with a certain length.
Since the water-bending process is located on both sides of the water-drawing push plate, along the both sides of this water-drawing push plate, and by the water-drawing bent plate that moves up and down along both sides of the water-drawing bent plate, Water-drawn U-shaped formation can be performed easily and reliably.

  The paper sheet binding device according to the present invention comprises a wetting means for moistening the upper and lower surfaces or watering of the paper sheet, an opening means for opening one or more pairs of through holes in the paper sheet, and a rewetting adhesive. Insertion means for inserting the both sides of the water hose bent in a U-shape into the through holes, and bonding means for bending both ends of the water hose protruding on the lower surface of the paper sheet and bonding the bent part to the paper sheet. Therefore, paper sheets can be bound by water pulling with a good appearance similar to wire binding, and when regenerating paper sheets, water pulling is paper, so it is easy to regenerate without removing water pulling. In addition to being effective for the end user, the environmental load can be reduced. Furthermore, there is an effect that the operation of inserting the water-drawn paper sheet in the mechanical automatic work has stability and certainty, and the adhesion of the bent part of the water-drawn paper sheet to the paper sheet can be surely achieved.

  Further, the paper sheet binding device of the present invention comprises a watering supply means for supplying watering applied with a rewet adhesive along the pair of through holes above the paper sheet between the opening means and the insertion means. Since it has cutting means for cutting the water draw into a certain length and water draw bending means for bending the water draw into both sides of the distance between the pair of through holes in a U-shape, by supplying a long water draw There is an effect that sheets can be bound continuously.

Since the wetting means is by spraying water, the wetting operation on the paper sheet and the water drawing is simple.
Since the opening means allows the thick needle to pass through the paper sheet from the top to the bottom, the opening work to the paper sheet and the subsequent water drawing insertion work are simple.
Since the insertion means is made by pushing both sides of the water pulling downward with a water pulling push plate that moves up and down, the water drawing insertion work is simple and reliable.
Since the bonding means is located at the lower part of the paper sheet and is a bent pressure plate that moves close to, away from, or moves horizontally, the sheet is wetted by the wet operation and the rewet adhesive applied to the water sheet. Can be easily bonded.
Since the water-drawing supply means supplies the water-drawing bent plate that can be moved back and forth on the paper sheet by the feed roller, it is easy to supply the water-drawing.
Since the cutting means is a cutter, it is possible to continuously supply water with a certain length.
The water-drawn bending means is located on both sides of the water-pushing push plate, and is based on a water-drawn bend plate that moves up and down along both sides of the water-pushing push-in plate. The shape can be easily and reliably formed.

The details of the present invention will be described with reference to the embodiments shown in the drawings.
FIG. 1 shows a wetting process and means for wetting both the upper and lower surfaces of a paper sheet and an opening process and means for opening a through hole in the paper sheet. In the figure, reference numeral 1 denotes a paper sheet that is folded in half from the center to form a signature 2, and this signature 2 is hooked and placed in a half-folded state. A through-hole 3 is formed in the front. In order to perform the wetting process and means for the paper sheet, spray tubes 4 are provided above and below the hook 1 so as to be movable back and forth along the longitudinal direction of the hook 1 above and below the position of the through hole 3 of the hook 1. . A pair of thick needles 5, 5 are fixed to the support plate 6 above the through hole 3 of the hook 1 for the opening process and means for making a through hole in the paper sheet. 5 is pushed downward from the upper position of the signature 2, a pair of through-holes 7 and 7 are drilled, and the needles 5 and 5 are returned upward.

  FIG. 2 to FIG. 4 show a water-drawing supply process and means for supplying water-drawing coated with a rewet adhesive along a pair of through holes above the paper sheet, and a cutting process and means for cutting the water-drawing to a certain length, and A water-bending process and means for bending both sides of the water-drawing through hole into a U-shape are shown.

The water pull 8 is formed by twisting a thin paper having a paper width of 10 to 12 mm. The thickness is 0.6 to 0.7 mm, and the tensile strength is 40 to 50 N (Newton). Even if the paper is twisted and the thickness is about 0.5 mm, the tensile strength may be twisted to a strength of about 40 N and the strength may be high.
Further, a rehumidifying adhesive was applied to the water pulling 8, and as the rehumidifying adhesive, Cybinol RM-3 of Seiden Chemical Co., Ltd., Arabic Yamato of Yamato Co., Ltd., or the like was used.

A water-drawing supply process and means for supplying water-drawing coated with rewet adhesive along a pair of through-holes 7 and 7 above the paper sheet are a long water-drawing wound around a bobbin, water-drawing winding or the like (not shown). 8 is led out between a pair of feed rollers 9 and 9, supplied from the feed rollers 9 and 9 to the horizontal guide tube 10, and further horizontally placed on the paper sheets or the through holes 7 and 7 of the signature 2. It is made to supply so that it may stick.
For this purpose, the water draw 8 is placed on the water draw bend template 11 which constitutes the water draw bending step and means which will be described later and also serves as the water draw supply step and means (shown in FIG. 2). The water-drawn folded template 11 is provided above the through-holes 7 and 7 provided in the paper sheet (folder) 2, and both sides thereof slightly overhang the through-holes 7 and 7. It is desirable. In addition, the water-drawn bending template 11 must be retracted from above the through-holes 7 and 7 in order to be inserted into the through-holes 7 and 7 after the water-drawing 8 is bent in a U-shape. . Therefore, the water-drawn bent plate 11 is movable back and forth between immediately above and between the through holes 7 and 7.

  The cutting process and means for cutting the water pull 8 into a certain length are constituted by a scissor-shaped cutter 12 disposed immediately after the outlet of the guide tube 10 of the water pull 8. That is, the cutter 12 cuts each time the water draw 8 is supplied onto the paper sheet 2.

Next, a water-drawing bending process for forming water-drawing by folding both sides of the interval between the pair of through-holes into a U-shape, means is inserted through the through-holes 7 and 7 of both sides of the water-drawing formed into a U-shape that will be described later It is comprised by the water drawing folding plates 14 and 14 provided in the both sides of the water drawing pushing board 13 which comprises a process and a means so that a vertical movement was possible. As shown in FIG. 2 and FIG. 3, the water pulling push plate 13 constituting the water pulling insertion process and means is directly above the water pulling bent plate 11 positioned immediately above the through holes 7 and 7 of the paper sheet 2. It arrange | positions at intervals so that the water drawing 8 may be positioned, and it is provided so that it can move up and down for the insertion process and means mentioned later.
The above-mentioned water-bending bent plates 14 and 14 are also positioned higher than the upper surface of the water-bending bent plate 11 because the water-bucking 8 is supplied onto the water-bending bent plate 11. It is arranged at the same level as the lower end of the pushing plate 13.
And this water-drawing bending process and means bend the water-drawing 8 into a U-shape in cooperation with the water-drawing folding plate 11 by moving down the water-drawing folding plates 14 and 14 as shown in FIG. .

  In this state, as shown in FIG. 4, the water-bending bent plate 11 is retracted from right above the through holes 7 of the paper sheet 2. In this way, the water drawing folded plate 11 is retracted, and the water drawing pushing plate 13 constituting the inserting process and means is pushed downward, so that both sides of the paper sheet 2 are bent downward. Both ends of the water pull 8 are protruded downward from the through holes 7 of the paper sheet 2 (shown in FIG. 5). In the illustrated embodiment, both the upper and lower surfaces of the paper sheet 2 are wetted by spraying. However, the waterbrush bent in a U-shape may be wetted by spraying.

  Furthermore, the bonding process and means for bending both ends of the water pull 8 projecting on the lower surface of the paper sheet 2 and bonding the bent portion to the paper sheet are a pair of folding provided in the through hole 3 of the hook 1. It is composed of curved pressure plates 15 and 15. The bending pressure plates 15 and 15 operate to approach and separate, and are located outside the through-holes 7 and 7 of the paper sheet 2 in the separated state, as shown in FIG. The water pull 8 is bent and pressed against the lower surface of the paper sheet 8. That is, the water pull 8 is moistened by a wetting process or means, and the water pull 8 is coated with the rewet adhesive, so that the water pull 8 is pressed by the water pulling plate 13 and the bending pressure by the bending pressure plates 15 and 15. The water pull 8 is adhered to the paper sheet 2.

The above-described sheet binding method and means include a wetting process and means for wetting the lower surface or both upper and lower surfaces of the paper sheet, and a bonding process and means for folding the water draw and bonding the bent portions at both ends to the paper sheet. The process is performed in about 0.5 seconds. Therefore, in order to operate 20 books in 10 seconds, 120 books in 1 minute, and 7,200 books in 1 hour, a rack rotating plate 16 provided with 20 racks 1 radially is provided. One rotation per second, and 7,200 books are bound in one hour.
For this purpose, an operating arm 17 that reciprocates between two adjacent racks 1 and 1 of the rack rotating disk 16 in synchronism with the rotation of the rotating disk 16 is provided and wetted on one side of the position near the tip of the operating arm 17. Means and opening means are provided, and cutting means, water bending means, and water drawing insertion means are provided on the opposite side. This actuating device is shown in FIG. 8, but this drawing does not disclose the water supply means.

  FIG. 8 shows the operation mechanism of the hanging turntable 16. A rotation shaft 18 is provided at the center of the hanging turntable 16, and this rotation shaft 18 is connected to a drive rotation shaft 20 of a drive motor 19 via a worm gear, and this worm gear is housed in a box 21. A large number of cams 22 are provided on the drive rotating shaft 20, and each of these cams is configured to turn on and off the operation switch for the above-described steps and means. A rotating plate 23 is provided at the tip of the drive rotating shaft 20, and a crank arm 24 is pivotally supported 26 at an eccentric position of the rotating plate 23. An oscillating arm 28 erected with a lower end pivotally supported 27 is provided on an L-shaped plate 25 erected on the foundation, and an upper end of the oscillating arm 28 is pivotally supported 29 on the tip of the operating arm 17. A vertical slit 30 is formed in the swing arm 28, and the slit 30 is provided with a pin 31 provided at the tip of the crank arm 24. As a result, the swing arm 28 swings one reciprocating motion every rotation of the rotary shaft 20, and the operation arm 17 swings one reciprocating motion by the operation. Then, the reciprocating swing of the operating arm 17 is performed for every pitch of the hanging rotary disk 16.

Wetting means A and aperture means B are provided on the rear side of the operating arm 17, that is, on the rear side in the rotational direction of the hanging rotary table 16, and on the front side of the operating arm 17, that is, on the front side in the rotational direction of the hanging rotary plate 16. Cutting means C, water bending means D, and water drawing insertion means E are provided. Further, a watering adhesive means, that is, a bending pressure plate 15, 15 is provided on each hook 1.
The operating arm 17 operates in synchronization with the rotation of the hanging turntable 16. Actually, the operating arm 17 is positioned between the radial hooks 1 and 1 and is rotated in synchronization with the rotation of the hooks 1 and 1. To do.
Specifically, the paper is fed at the back position of the hanging turntable 16 of FIG. 7, the wetting means and the opening means B are operated at the end position, and the cutting means, the water bending means D, and the water drawing insertion means are operated at the saddle position. E is activated, and the adhering means is activated until the paper discharge position 以後 after the Ding position, and pressure drying is performed. With this operation, the sheet binding operation is continuously performed at a high speed.

Explanatory drawing which shows the wetting process and means to wet the upper and lower surfaces of a paper sheet, and the opening process and means which open a through-hole in a paper sheet. Explanatory drawing which shows the cutting process and means which cut | disconnect a watering supply process and a means, and a watering to fixed length. Explanatory drawing which shows the water drawing bending process and means to bend and form water drawing. Explanatory drawing of the state which retracted the water-drawing bending type | mold plate which becomes obstructive in order to insert the both sides of the said water-drawing into the through-hole. Explanatory drawing which shows the penetration process and means which are penetrated to the through-hole of both sides of watering. Explanatory drawing explaining the adhesion | attachment process and means which bend | fold both ends of water drawing and adhere | attach this bending part on a paper sheet. FIG. 3 is a plan view of a hanging turntable in which a plurality of hangings for placing a signature in which a paper sheet is folded in two on a rotating disk are provided in a radial manner. The perspective view of the apparatus which implements each process of a method and apparatus of this invention, and a means with respect to the signature mounted in the hook.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hook 2 Signature 3 Through-hole 4 Spray pipe 5 Thick needle 6 Support plate 7 Through-hole
DESCRIPTION OF SYMBOLS 8 Water drawing 9 Feeding roller 10 Guide tube 11 Water drawing bending type plate 12 Cutter 13 Water drawing pushing plate 14 Water drawing bending plate 15 Bending pressurizing plate 16 Hanging rotary plate 17 Actuating arm 18 Rotary shaft 19 Drive motor 20 Drive rotary shaft 21 Box 22 Cam 23 Rotating plate 24 Crank arm 25 L-shaped plate 26 Shaft support 27 Shaft support 28 Swing arm 29 Shaft support 30 Slit

Claims (18)

  A wetting process for wetting both the upper and lower surfaces of the paper sheet or water wetting, an opening process for opening one or more pairs of through holes in the paper sheet, and a water wetting formed by applying a rewet adhesive and bending it into a U-shape. A paper sheet binding method comprising: an insertion step of inserting the both sides of the paper into the through holes; and a bonding step of bending both ends of the water pulling protruding on the lower surface of the paper sheet and bonding the bent portion to the paper sheet.   Between the opening step and the insertion step, a water drawing supply step for supplying water drawing with a rewet adhesive applied along a pair of through holes above the paper sheet, and cutting for cutting the water drawing to a certain length The paper sheet binding method according to claim 1, further comprising: a step of water-bending and a step of water-bending to form both sides of the gap between the pair of through holes in a U-shape.   The paper sheet binding method according to claim 1 or 2, wherein the wetting step comprises spraying water.   The paper sheet binding method according to claim 1 or 2, wherein the opening step allows a thick needle to penetrate the paper sheet from above to below.   The paper sheet binding method according to claim 1 or 2, wherein the insertion step is performed by a water pulling push plate that moves up and down with both sides of the water pulling facing downward.   The paper sheet binding method according to claim 1, wherein the bonding step is performed at a lower portion of the paper sheet and is bent and separated.   3. The paper sheet binding method according to claim 2, wherein the water-drawing supply step feeds the water-drawing bent plate that can be moved back and forth on the paper sheet by a feed roller.   The paper sheet binding method according to claim 2, wherein the cutting step is performed by a cutter.   The water-drawing bending step is located on both sides of the water-drawing push plate, and the water-drawing plate moves up and down along both sides of the water-drawing push plate and both sides of the water-drawing push plate. The paper sheet binding method described.   Wetting means for wetting both the upper and lower surfaces of the paper sheet or the water wetting, an opening means for opening one or more pairs of through holes in the paper sheet, and a water wetting formed by applying a rewet adhesive and bending it into a U-shape. A paper sheet binding device comprising: insertion means for inserting the both sides of the paper through the hole; and bonding means for bending both ends of the water pulling protruding on the lower surface of the paper sheet and adhering the bent portion to the paper sheet.   Between the opening means and the insertion means, a watering supply means for supplying watering with a rewet adhesive applied along a pair of through holes above the paper sheet, and cutting for cutting the watering to a certain length The paper sheet binding device according to claim 10, further comprising: means and water draw bending means for folding the water draw into both sides of the interval between the pair of through holes in a U shape.   The paper sheet binding device according to claim 10 or 11, wherein the wetting means sprays water.   The paper sheet binding device according to claim 10 or 11, wherein the opening means allows a thick needle to penetrate the paper sheet from above to below.   12. The paper sheet binding device according to claim 10 or 11, wherein the insertion means is pushed by a water pulling push plate that moves up and down with both sides of the water pulling facing downward.   12. The paper sheet binding device according to claim 10 or 11, wherein the adhesive means is located at a lower portion of the paper sheet and is bent and pressed apart.   12. The paper sheet binding device according to claim 11, wherein the water-drawing supply means supplies the water-drawing bent plate that can be moved back and forth on the paper sheet by a feed roller.   The paper sheet binding device according to claim 11, wherein the cutting means is a cutter. The said water-drawing bending means is located on both sides of the water-drawing push plate, and the water-drawing plate moves up and down along both sides of the water-drawing push plate and both sides of the water-drawing push plate. The paper sheet binding device described.

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