JP4077231B2 - Hatch paper binding device using index mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention uses an index mechanism, that is, a mechanism that stops rotation of an output shaft during one rotation angle period of one rotation of an input shaft to drive a conveying chain that conveys hanging paper and hangs the output shaft during a stop period of the output shaft. The present invention relates to a paper binding device for binding paper.
[0002]
[Prior art]
When binding the back of a signature with a wire, the signature may be straddled across the heel, transported to the position of the stitching machine such as a stitcher while straddling the heel, and the conveyed signature may be bound by the binding machine. Has been done. FIG. 7 shows an outline of an example of a binding device for performing such binding. In FIG. 7, 1 is a drive sprocket, 2 is a driven sprocket, 3 is a transport chain, and 4 is a transport chain with an appropriate interval. The fixed conveying claw, 5 is a collar, 6 is a stitcher head, 7 is a signature (paper), 8 is a conveying claw detection sensor, and 9 is a motor that rotates the drive sprocket 1.
[0003]
The transport chain 3 is hung on the drive sprocket 1 and the driven sprocket 2, and rotates around the drive sprocket 1 and the driven sprocket 2 by the rotation of the drive sprocket 1. The stitcher head 6 is disposed in the middle of the transport chain 3. The sheet 7 to be bound is placed across the bag 5. The conveyance claw 4 moves along with the movement of the conveyance chain 3 and pushes the paper 7 in contact with the trailing edge of the paper 7 placed on the collar 5 in the conveyance direction. When the paper 7 reaches the position where the stitcher head 6 is disposed by this pushing forward, the conveyance claw detection sensor 8 detects the conveyance claw 4, stops the rotation of the motor 9 and stops the drive sprocket 1. In this state, the stitcher head 6 is driven to bind the back surface of the conveyed paper 7.
[0004]
After binding, the motor 9 rotates, whereby the drive sprocket 1 rotates and moves the transport chain 3. By the movement, the bound paper 7 is pushed forward by the transport claw 4 and transported to the discharge position. Usually, a three-way cutting machine is installed near the discharge position, and the paper 7 discharged at the discharge position continues to be sent to the three-way cutting machine, where the top and bottom portions of the paper 7 are cut into three sides. One booklet is completed.
[0005]
[Problems to be solved by the invention]
By the way, in such a binding device, when the stop position of the transport claw 4 and the position of the stitcher head 6 are fixed, for example, when the paper is fixed to the long paper 7 in the transport direction, the short paper 7 is used. Cannot be bound at an appropriate position on the back surface of the sheet 7. Therefore, the position of the stitcher provided with the stitcher head 6 can be moved along the line of the transport chain 3 in accordance with the length of the paper 7 in the transport direction. Accordingly, there is a problem that positioning of the stitcher is very troublesome. Further, when the bound paper is sent to the three-way cutting machine, it is necessary to match the center position of the paper 7 with the three-way cutting machine, particularly the center position for cutting the top and bottom. Therefore, it is necessary to lengthen the paper transport path after binding, and there is a problem that the entire apparatus is large.
[0006]
The present invention has been made to solve these problems. A simple mechanism enables positioning to a binding position corresponding to the length in the sheet conveyance direction, and allows the sheet to be fed to the three-way cutting machine to be centered. An object of the present invention is to provide a hanging sheet binding device using an index mechanism that can be performed.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a drive sprocket that is connected to an output shaft of an index mechanism and is rotationally driven, a plurality of driven sprockets that are arranged at appropriate intervals from the drive sprocket, and each sprocket. The conveyance claw that contacts the paper that is hooked at an appropriate interval is fixed, and is arranged in the middle of movement between the conveyance chain that moves around each sprocket and the driven sprocket of the conveyance chain, and the conveyance chain A sheet binding machine that binds the hooked sheets conveyed in contact with the conveyance claws of the paper, and a drive for driving the parallel movement of the conveyance chain to one of the driven sprockets on both sides on which the sheet binding machines are arranged A shaft is connected to the other and a mechanism that follows the parallel movement is connected.
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, the position of the sheet binding machine is fixed, and the binding position of the hooked sheet conveyed in contact with the conveyance claw of the conveyance chain is set as the binding position. It is characterized in that it is positioned at the position of the binding machine by driving a drive shaft that drives parallel movement.
[0009]
According to a third aspect of the present invention, in the first or second aspect of the present invention, a folding knife that folds and discharges the bound paper is disposed in the middle of the movement of the transport chain. The present invention according to claim 4 is provided with a sheet folding mechanism for forming a hanging sheet at the front stage of the transport chain, and the present invention according to claim 4 is characterized in that it is defined in claim 1 or claim 4. The present invention according to claim 2 or claim 3, further comprising a three-way cutting mechanism for cutting three sides of the bound paper after binding at the rear stage of the transport chain.
[0010]
In the present invention, the driven sprocket is connected with a drive shaft that drives the parallel movement. By driving this drive shaft, the stop position of the transport claw can be set arbitrarily and easily, and the paper transport direction The center position of the sheet and the center position of the three-way cutting machine when the three-way cutting machine is provided at the subsequent stage can be also aligned by positioning to the binding position according to the length of the sheet.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing one state of a hanging sheet binding device using an index mechanism according to an embodiment of the present invention, and FIG. 2 is a plan view of the hanging sheet binding device using the index mechanism shown in FIG. 3 is a right side view of the same, FIG. 4 is a left side view of the same, FIG. 5 is a front view showing another state, and FIG. 6 is a sheet of paper when the saddle stitching apparatus according to the embodiment of the present invention is used. It is a sheet | seat flowchart of an example which shows a flow.
[0012]
6, 11 is a paper feeding unit, 12 is a paper positioning and accumulating unit, 13 is a paper folding unit, 14 is a paper conveying unit, 15 is a paper binding unit, 16 is a paper discharging unit, 17 is a cutting unit, and P is a cutting unit. Paper (because the central part is folded and formed into one booklet, it is assumed that two pages divided by the central part are printed on one side of one sheet). A vertical collating machine (or a printing machine or the like) is disposed in the paper feeding unit 11, and the stacking order of the booklet is formed in each paper feeding stage (bin) of the collating machine, for example, the paper P divided into pages. A stack of sheets is placed and carried out one by one in the page order or a plurality of sheets in the page order. The paper P carried out from the paper feeding unit 11 is sent to the paper positioning and accumulating unit 12, and the paper positioning and accumulating unit 12 aligns the center of the paper P with the center line of the subsequent transport path (in the paper folding unit 13). The number of sheets that can be reliably folded) is accumulated, and the accumulated paper P is carried out to the paper folding section 13.
[0013]
The paper folding unit 13 is a pair of presses that are arranged on the paper carry-in side, with a pair of upper and lower scoring rollers 13a and 13b on the center line of the transport path, and a transport pulley 13c on both sides thereof, and in pressure contact with the carry-out side in the lateral direction. A roller 13d is arranged, a round belt 13e is hung on the conveying pulley 13c and the press roller 13d, and a guide roller 13f is arranged between the scoring rollers 13a and 13b and the press roller 13d. The central portion of the paper P carried into the paper folding section 13 is sandwiched between the scoring rollers 13a and 13b, and the crease is put along with the conveyance. The sheet P in which the folding line is inserted is a little pushed up in the upper direction with the guide roller 13f coming into contact with the folding line. At this time, the paper portions located on both sides of the folding line are located inside the round belt 13e, inserted in the state between the press rollers 13d, the paper P is folded in half, and the folded paper P is described later. It is hung on the bag (reference numeral 14A in FIG. 1) of the paper transport unit 14.
[0014]
One sheet of paper P is collected by the paper transport unit 14, and the stacked paper P is pushed forward by a transport claw 14 </ b> C fixed to the transport chain 14 </ b> B by the movement of the transport path of the transport chain 14 </ b> B and sent to the paper binding unit 15. The stitcher head 15a of the binding machine (stitcher) installed in the paper binding unit 15 is bound with a wire (two locations in the illustrated example). The bound paper P is sent to the paper discharge unit 16, pushed up by a folding knife 16 a installed in the paper discharge unit 16, discharged to a transport machine installed in front of the cutting unit 17, and sent to the cutting unit 17. The cutting unit 17 is provided with a fork cutting blade 17a and a top and bottom cutting blade 17b, and the paper P sent to the cutting unit 17 is first cut at the fore edge of the paper P. Thereafter, the paper is sent to the top and bottom cutting blade 17b, where the top and bottom portions of the paper P are cut to complete one booklet.
[0015]
1 to 4 show a hooked paper binding device using an index mechanism installed in the paper transporting section 14, wherein 14A is a collar for straddling and supporting the folded paper P, 14B is a transport chain, 14C Is a stitching head of a binding machine (stitcher), 18 is an index, 19 is a drive sprocket, 20 to 22 is a driven sprocket, 23 is a tension lever, 24 is a tension spring, 25 is a positioning motor, and 26 is a feed A screw, 27 is a feed nut, and 28 is a power motor.
[0016]
The sprocket 19 is rotatably attached to a support bracket 19a fixed to the machine base, and is connected to the output shaft 18b of the index 18 via a chain or the like. The input shaft 18a of the index 18 is connected to the rotating shaft of the power motor 28 via a chain or the like, and the continuous rotation of the power motor 28 is transmitted to the sprocket 19 by the index 18 instead of intermittent rotation. The driven sprocket 20 is rotatably attached to a support fitting fixed to a machine base (not shown) at a position appropriately spaced from the drive sprocket 19.
[0017]
A driven sprocket 21 disposed at the upper portion of the driven sprocket 20 is rotatably attached to one end of a tension lever 23 that rotates about the axis of the driven sprocket 20, and the other end of the tension lever 23 is a tension spring with one end fixed. 24 is connected to the other end. A driven sprocket 22 disposed on the top of the drive sprocket 19 is rotatably attached to a feed nut 27 that is screwed to a feed screw 26, and the feed screw 26 is connected to a rotating shaft of a positioning motor 25 via a chain or the like. .
[0018]
The transport chain 14B is hung on the sprockets 19 to 22, and is rotated around the sprockets 19 to 22 by the rotational drive of the drive sprocket 19, and a path that moves between the driven sprockets 21 and 22 is configured as a paper transport path. . A plurality of transport claws 14C are fixed to the transport chain 14B at appropriate intervals, and the transport claws 14C move as the transport chain 14B moves. The input shaft 18a of the index 18 is continuously rotated by the power motor 28, but the output shaft 18b stops rotating for a certain rotation angle period. That is, the transport chain 14B moves intermittently.
[0019]
When the transport chain 14B is stopped, one of the transport claws 14C is positioned at a position where, for example, the maximum length of paper P in the transport direction can be bound to the optimal position with respect to the binding machine (stitcher) whose position is fixed. (The interval between the stitcher heads 15a is widened corresponding to the paper P). This state is shown in FIG. In this case, the feed nut 27 is located at the tip of the feed screw 26, and the driven sprocket 21 is located at a position where the conveying chain 14 </ b> B is stretched by the tension spring 24. That is, the driven sprockets 21 and 22 are translated. Further, the transport claw 14C positioned in the front in the transport direction is at a discharge position for discharging the paper P after binding, and at this time, the center line of the paper P coincides with the center line of the subsequent cutting machine. Further, the conveyance claw 14C located at the rear in the conveyance direction is located in front of the collar 14A and hooks the next sheet P.
[0020]
When the length of the paper P in the conveyance direction is shortened, the positioning motor 25 is rotated by the shortened amount, the feed screw 26 is rotated, and the feed nut 27 is moved by the shortened direction away from the tip of the feed screw 26. . This movement causes the driven sprocket 22 to move in parallel in the conveying direction, the driven sprocket 21 follows the parallel movement of the driven sprocket 22 by the action of the following mechanism comprising the tension lever 23 and the tension spring 24, and the conveying chain 14B is slack. Absent.
[0021]
Due to this parallel movement, the stop position of the conveying claw 14C with respect to the binding machine (stitcher) stops at a position moved by a shorter amount (the interval between the stitcher heads 15a is narrowed corresponding to the paper P). This state is shown in FIG. Even if the length of the paper P in the transport direction is changed by moving in this way, the center position of the binding machine (stitcher) can be bound to the appropriate position of the paper P without changing the center position of the paper P. The line can be made to coincide with the center line of the subsequent cutting machine. Note that conveyance of the hooked paper P is performed by pushing the trailing edge of the paper P with the transport claw 14C.
[0022]
In the above embodiment, the driven sprocket 22 at the top of the drive sprocket 19 is translated by the feed screw 26, and the driven sprocket 21 at the top of the driven sprocket 20 is translated by the tension lever 23, that is, the paper P is conveyed. The parallel movement of the driven sprockets 21 and 22 on both sides of the path causes the transport chain 14B located in the path to translate, and the transport claw 14C fixed to the transport chain 14B moves in parallel. 21 may be moved in parallel by the feed screw 26 and the driven sprocket 22 may be moved in parallel by the tension lever 23.
[0023]
【The invention's effect】
As described above in detail, according to the present invention, since the transport chain is intermittently driven using the index, the intermittent drive can be performed more accurately than the intermittent drive using the clutch, and the stop position of the transport pawl is accurately performed. be able to. In addition, by moving the transport chain in parallel, the center position of the sheet can be matched with the center position of the fixed binding machine regardless of the length of the sheet in the transport direction. The transport distance for the alignment can be reduced, and the apparatus can be downsized accordingly.
[Brief description of the drawings]
FIG. 1 is a front view showing a state of a saddle stitching apparatus using an index mechanism according to an embodiment of the present invention.
FIG. 2 is a plan view of a hooked paper binding device using the index mechanism shown in FIG.
FIG. 3 is a right side view of the saddle stitching apparatus using the index mechanism shown in FIG.
4 is a left side view of the saddle stitching apparatus using the index mechanism shown in FIG. 1. FIG.
FIG. 5 is a front view showing another state of the saddle stitching apparatus using the index mechanism shown in FIG. 1;
FIG. 6 is a sheet flow chart showing an example of a sheet flow when the hanging sheet binding device according to the embodiment of the present invention is used.
FIG. 7 is a front view showing an example of the configuration of a conventional hanging sheet binding device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Paper feed part 12 Paper positioning accumulation | aggregation part 13 Paper bending part 13a, 13b Line insertion roller 13c Conveying pulley 13d Press roller 13e Round belt 13f Guide roller 14 Paper conveyance part 14A 鞍 14B Conveying chain 14C Conveying claw 15 Paper binding part 15a Stitcher Head 16 Paper discharge section 16a Folding knife 17 Cutting section 17a Small cutting blade 17b Top cutting blade P Paper 18 Index 18a Index input shaft 18b Index output shaft 19 Drive sprocket 20-22 Driven sprocket 23 Tension lever 24 Tension spring 25 Positioning Motor 26 Feed screw 27 Feed nut 28 Power motor

Claims (5)

A driving sprocket connected to the output shaft of the index mechanism and driven to rotate, a plurality of driven sprockets arranged at an appropriate interval from the driving sprocket, and hung on each of the sprockets and hooked at an appropriate interval A conveying claw that abuts against the paper is fixed, and is disposed in the middle of movement between the conveying chain that moves around each sprocket and the driven sprocket of the conveying chain, and is conveyed while abutting the conveying claw of the conveying chain. A paper binding machine for binding the hooked paper, one of the driven sprockets on both sides of the paper binding machine having a drive shaft for driving the parallel movement of the transport chain and the other for the parallel movement. A hooked paper binding apparatus using an index mechanism, wherein the following mechanism is connected. The position of the sheet binding machine is fixed, and the binding position of the hooked sheet conveyed in contact with the conveyance claw of the conveyance chain is positioned at the position of the binding machine by driving the drive shaft that drives the parallel movement. The hooking paper binding device using the index mechanism according to claim 1. The folding paper binding apparatus using the index mechanism according to claim 1 or 2, wherein a folding knife for folding and discharging the paper after binding is disposed during the movement of the transport chain. . The hooking paper binding device using the index mechanism according to claim 1 or 2, further comprising a paper folding mechanism that forms the hooking paper at a front stage of the transport chain. The hooking using the index mechanism according to claim 1, 2 or 3, further comprising a three-way cutting mechanism for cutting three sides of the hooked paper after binding at the rear stage of the transport chain. Paper binding device.

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