JP4632594B2 - Paper bundle transport delay device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet bundle conveyance delay device, and more particularly to solidification of glue for conveying glued and bound books to a post-processing machine.
[0002]
[Prior art]
For example, a bookbinding machine that produces and discharges a booklet in which hot melt paste is applied to the back of the body (the contents of the book) and a cover is attached is well known. A booklet bound by such a bookbinding machine may be trimmed on the top and bottom of the booklet and trimmed. FIG. 6 shows an example of this case. The booklets attached by the bookbinding machine 1 and discharged one after another are conveyed by the conveyor 2 that moves at a speed that matches the bookbinding processing speed of the bookbinding machine 1.
[0003]
Each booklet conveyed by the conveyor 2 is stacked by the booklet stacking mechanism 3 as many as necessary, and the stacked booklet is sent to a long conveyor 4 that moves at a low speed, and is applied to the back of the main body by hot melt glue. Is cooled and solidified and conveyed to a three-way cutting machine 5 as a post-processing machine. In general, the three-way cutting machine 5 includes a cutting unit 5a for cutting the top of the booklet, a cutting unit 5b for cutting the base of the booklet, and a cutting unit 5c for cutting the fore edge of the booklet. Yes. Each of the cutting units 5a, 5b, and 5c has a movable cutting blade and a presser plate that are driven by a hydraulic cylinder or the like. During cutting, the end of the booklet is pressed by the presser plate and the cutting blade is driven to perform cutting.
[0004]
The booklet conveyed by the conveyor 4 is arranged in a substantially U-shape and sent to the inside of the cutting unit, and the cutting blades and presser plates of the cutting unit 5a and the cutting unit 5b are driven to drive the top and bottom of the booklet. The edge of the booklet is aligned and then sent to the cutting unit 5c (slightly separated to avoid mechanical interference), and the edge of the booklet fore edge is driven by driving the cutting blade and presser plate of the cutting unit 5c. Trim. After the edges of the fore edge are trimmed, the booklet is discharged from the cutting machine 5.
[0005]
[Problems to be solved by the invention]
When a bookbinding product that has been glued and bound in this way is transported to a cutter of a post-processing machine, a long conveyor that moves at a low speed is used to solidify the glue. Therefore, there is a problem that a space for arranging a long conveyor is required, and in a narrow space, it is difficult to consistently and automatically perform glue binding and post-processing cutting.
[0006]
The present invention has been made to solve such a problem, and an object of the present invention is to provide a sheet bundle conveyance delay device capable of reducing a space for consistently performing gluing bookbinding and post-processing cutting.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a first transport mechanism that has a single sheet bundle receiver and that moves up and down at a high speed, and a second sheet bundle receiver that has a plurality of sheet bundle receivers and forms a lowermost sheet bundle receiver. The second transport mechanism receives the sheet bundle raised by the first transport mechanism by the sheet bundle receiver formed at the lowermost stage and raises it by one stage. A sheet bundle conveyance delay device, wherein the sheet bundle of the uppermost sheet bundle receiver is unloaded.
[0008]
According to the first aspect of the present invention, the lowermost sheet bundle that is raised by one stage is the lowermost sheet bundle received from the first conveying mechanism. The sheet bundle of the lowermost sheet bundle receiver is placed on the sheet bundle of the first conveying mechanism. A plurality of sheet bundles are formed by stacking the discharged sheet bundle and the discharged sheet bundle of the first transport mechanism.
[0009]
In the present invention, the sheet bundle receiver of the first conveying mechanism is placed at the lower position, the conveyed sheet bundle is received by the sheet bundle receiver, and the received sheet bundle is conveyed while the next sheet bundle is conveyed. When the paper is carried to the lowermost sheet receptacle of the second conveyance mechanism, the sheet is returned to the lower position to receive the next conveyed sheet bundle. The second transport mechanism receives the sheet bundle from the first transport mechanism at the lowermost sheet bundle receiver and raises it by one stage, and stops further raising until the next sheet bundle is carried from the first transport mechanism, The sheet bundle conveyed from the next first transport mechanism is received by the bottom sheet bundle receiver formed next. Accordingly, the sheet bundle conveyed from the first conveyance mechanism is sequentially carried into each stage of the plurality of sheet bundle receivers of the second conveyance mechanism for each conveyance, and the uppermost stage of the second conveyance mechanism. Since the sheet reaches the position for receiving the sheet bundle and is unloaded, the conveyance of the sheet bundle for a plurality of stages is delayed. That is, it can be obtained by the second transport mechanism for a plurality of times of the sheet bundle conveyed at a certain time interval in the sheet bundle receiver of the first transport mechanism, and the glue applied to the back surface can be solidified. .
[0010]
Also, the sheet bundle once carried to the lowermost sheet receiver of the second transport mechanism is discharged onto the sheet bundle when the next sheet bundle is carried into the sheet bundle receiver of the first transport mechanism. Stacking and repeating this process as many times as necessary, the sheet bundle obtained by stacking a plurality of sheet bundles is conveyed to the lowermost sheet receptacle of the second transport mechanism and then raised, and the stacked sheet bundle is moved to the uppermost stage of the second transport mechanism. When the paper bundle receiving position is reached and carried out, the conveyance of the stacked paper bundle is delayed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view schematically showing the overall configuration of a sheet cutting device using a sheet bundle conveyance delay device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view thereof, FIG. 4 and FIG. FIG. 5 is an operation explanatory diagram of the sheet bundle conveyance delay device according to the embodiment.
[0012]
In FIG. 1, 11 is a bundle of sheets (glued and bound booklet, 11a is a back side to which glue is attached and a cover is attached, 11b is a top portion, 11c is a small edge portion, and 11d is a ground portion). , 12 is a paper bundle conveyance delay device, 13 is a push plate (or chuck), 14 is a chuck, 15 is a rotary table, 16 is a small edge positioning guide plate, 17 is a cutting unit, 18 is a stacker, and 19 is a paper on the rotary table. It is a rotatable presser plate that holds and fixes a bundle.
[0013]
The cutting machine mainly composed of the cutting unit 17 and the rotary table 15 removes the uppermost sheet bundle 11 of the sheet bundle conveyance delay device 12 by a pressing plate 13 fixed to a belt 13b that reciprocates by driving of a motor 13a. Transport to the rotary table 15. The rotary table 15 is provided with a guide plate 15a, and the guide plate 15a is set at a position parallel to the conveyance direction of the sheet bundle 11 when the sheet bundle 11 is placed and taken out. The sheet bundle 11 conveyed by the pressing plate 13 is placed at a predetermined position on the rotary table 15 with the back surface 11a abutting against the guide plate 15a. In this state, a fore edge positioning guide plate 16 that approaches or separates from the rotary table 15 by driving the motor 16a is disposed at a position facing the guide plate 15a, and the fore edge portion 11c of the sheet bundle 11 placed on the rotary table 15 is disposed. To align the fore edge portion 11c.
[0014]
After positioning the sheet bundle 11 on the rotary table 15 in this way, the rotary press cylinder 19a is driven to press and fix the sheet bundle 11 against the rotary table 15 with the presser plate 19, and the fore edge positioning guide plate 16 is fixed to the rotary table. 15 is placed in a state where it can be rotated by driving the motor 15b.
[0015]
The cutting unit 17 slidably attaches a holding plate 17c connected to a cutter cylinder 17d to which a cutting blade 17b is attached and a presser plate 17e connected to a pressure cylinder 17f that presses an edge of the sheet bundle 11 at the time of cutting. The support plate 17a has a screw shaft (feed screw) 17h that rotates when the motor 17g is driven, and moves in a direction toward or away from the rotary table 15 by the drive of the motor 17g. The position of the cutting unit 17 is set by a drive control device of a motor 17g (not shown) according to the length dimension d1 of the fore edge portion 11c of the sheet bundle 11 and the length dimension d2 of the top and bottom portions 11b and 11d and the rotation position of the rotary table 15.
[0016]
When the sheet bundle 11 is positioned and fixed on the turntable 15, the turntable 15 rotates 90 degrees clockwise and stops. At this time, the cutting unit 17 is positioned at a position where the cutting blade 17b is positioned above the end of the sheet bundle 11 placed on the rotary table 15 on the ground portion 11d side. Then, the pressure cylinder 17f is driven to lower the presser plate 17e, the end of the sheet bundle 11 on the side of the base portion 11d is pressed against a cradle (not shown) provided on the support plate 17a, and the cutter cylinder 17d is driven almost simultaneously. The edge of the ground portion 11d is cut and aligned with the cutting blade 17b.
[0017]
After cutting the edge of the base portion 11d, the presser plate 17e and the cutting blade 17b are kept at the original upper position, and the rotary table 15 is rotated 90 degrees clockwise and stopped. At this time, the cutting unit 17 is positioned at a position where the cutting blade 17b is positioned above the end portion on the small edge portion 11c side of the sheet bundle 11 placed on the rotary table 15 (d2 <d1 from the rotation center of the rotary table 15). The distance is different.) In the same manner as the cutting of the edge of the ground portion 11d, the presser plate 17e and the cutting blade 17b are driven to align the edge of the small edge portion 11c. Thereafter, similarly, the turntable 15 is rotated 90 degrees clockwise and stopped, and the edges of the top portion 11b are aligned. Thereafter, the rotary table 15 is rotated to return the guide plate 15a to the original standby position. At this time, the rotary press cylinder 19a is driven, and the pressing of the presser plate 19 is released.
[0018]
When the cutting of the edge of the top portion 11b is completed and the rotary table 15 is rotated and the guide plate 15a returns to the original standby position, the chuck 14 fixed to the belt 14b reciprocatingly driven by the motor 14a is rotated. It moves toward the table 15, returns to the original position even when the cut sheet bundle 11 on the rotary table 15 is gripped, and discharges the sheet bundle 11 to the stacker 18.
[0019]
The sheet bundle conveyance delay device 12 is a first conveyance composed of four chains 12c that are moved up and down at high speed (circular movement is possible) to which a sheet bundle support piece 12b that forms a sheet bundle receiver is attached by a first lift motor 12a. A second transport mechanism comprising a mechanism and four chains 12f that move around the sheet bundle support pieces 12e that are formed above the sheet bundle support members 12e that are attached at appropriate intervals by a second lift motor 12d. It is comprised by.
[0020]
The operation of the sheet bundle conveyance delay device 12 is performed by setting the maximum thickness of the sheet bundle to be cut as shown in FIG. 5 in a control device that controls driving of the lift motor 12a and the second lift motor 12d (not shown). Input the thickness information of one bundle of sheets to be cut from the thickness manual or bookbinding machine or printing machine, calculate the number of stacked sheets with this information and the maximum thickness, and start the stacking operation based on the calculation result .
[0021]
Now, assuming that the calculation result is a plurality of books, for example, 3 books, as shown in FIG. 4A, one sheet bundle is placed on the sheet bundle support piece 12b of the first transport mechanism waiting at the bottom as shown in FIG. 11 is carried in, the second lift motor 12d is driven in the reverse direction, and the sheet bundle (two in the figure) stacked on the sheet bundle support piece 12e positioned at the lowermost stage of the second transport mechanism, The paper is dropped and stacked on one sheet bundle 11 carried on the sheet bundle support piece 12b of the first transport mechanism (FIG. 4B). In this case, the three books positioned in the upper stage of the lowermost stage of the second transport mechanism are lowered but are held on the sheet bundle supporting pieces 12e of the second transport mechanism as they are.
[0022]
Next, the first lift motor 12a is driven, and the three sheet bundles stacked on the sheet bundle support piece 12b of the first transport mechanism are carried to the top of the first transport mechanism (FIG. 4 ( c)), the second lift motor 12d is driven in the forward direction and received on the sheet bundle support piece 12e of the second transport mechanism, and continues to rise by one step, and the first transport mechanism returns to its original position. It returns (FIG. 4 (d)). The three books positioned at the upper stage of the lowermost stage of the second transport mechanism due to the one-step rise are positioned at the uppermost part of the second transport mechanism, and the three books are moved out by moving the push plate 13.
[0023]
That is, the sheet bundle 11 carried into the first conveyance mechanism is temporarily transferred to the lowermost sheet bundle support piece 12e of the second conveyance mechanism and waits, and the next sheet bundle 11 is carried into the first conveyance mechanism. Then, the sheet bundle 11 that has been passed to the second transport mechanism and is waiting is stacked on the sheet bundle 11 carried into the first transport mechanism, and this procedure is performed to obtain the number of sheet stacks to be stacked obtained by calculation. The process is repeated until the number reaches, and every time the number of stacked sheet bundles obtained by calculation is reached, the stacked sheet bundle is transported to the top of the second transport mechanism.
[0024]
When the sheet bundle 11 is thick and the calculation result is one, the stacking operation is not performed, and the second conveyance mechanism of the second conveyance mechanism is transported every time the sheet bundle 11 carried into the first conveyance mechanism is carried. The sheets are sequentially received by the sheet bundle receiver formed by the sheet bundle support piece 12e at the lowermost stage, and the sheet bundle 11 is raised intermittently by one stage and conveyed to the uppermost part of the second conveying mechanism.
[0025]
The number of stages for receiving the sheet bundle of the second transport mechanism is set by the glue solidification time when each thick sheet bundle is transported (three stages in the examples shown in FIGS. 1 and 4). That is, the thick sheet bundle is slower than the case where the bookbinding processing speed is thin, and the time interval of the sheet bundle discharged from the bookbinding machine is long. The rising by the second transport mechanism is stopped for the time interval, and when the next sheet bundle is carried by the first transport mechanism, it is raised by one stage. By stopping the ascent and repeating the movement, the conveyance of the sheet bundle is delayed, and solidification of the glue is achieved while the sheet bundle 11 carried into the first conveyance mechanism is conveyed to the top of the second conveyance mechanism. The
[0026]
When the paper bundle is thin, the time interval of the paper bundle ejected from the bookbinding machine is short, but by repeating the stacking of the paper bundle, the conveyance of the paper bundle is delayed by the same number of stops and repeated movements. Then, solidification of the glue is achieved while the sheet bundle 11 carried into the first transport mechanism is transported to the uppermost part of the second transport mechanism. In this case, a sheet bundle having a short time after the pasting process is located in the stacked lower portion, and a shift at the time of cutting due to insufficient solidification of the glue is reduced.
[0027]
In the above example, the sheet bundle conveyance delay device 12 is positioned and rotated on the rotary table 15, and the moving unit that moves and cuts one cutting unit 17 to the end of the sheet bundle 11 is small. Installed in the carry-in section of the paper bundle 11 of the rotary cutting machine with a simple structure and a fast cutting speed for the three sides of the paper bundle. The cutting machine itself can be used in a cutting machine in which conventional cutting units are arranged in a substantially U shape.
[0028]
【The invention's effect】
As described above, according to the present invention, the glue applied to the back surface of the sheet bundle is cooled and solidified by moving one shortest distance extending in the vertical direction regardless of the thickness of the sheet bundle. The space for consistently cutting the processing can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing an overall configuration of a sheet cutting apparatus using a sheet bundle conveyance delay device according to an embodiment of the present invention.
FIG. 2 is a plan view of the overall configuration of the sheet cutting apparatus shown in FIG.
FIG. 3 is a front view of the overall configuration of the sheet cutting apparatus shown in FIG. 1;
FIG. 4 is an operation explanatory diagram of a sheet bundle conveyance delay device according to an embodiment of the present invention.
FIG. 5 is an operation explanatory diagram of the sheet bundle conveyance delay device according to the embodiment of the present invention.
FIG. 6 is an explanatory diagram illustrating an example of a conventional sheet bundle conveyance delay.
[Explanation of symbols]
11 Sheet bundle 11a Back surface 11b Top section 11c Small edge section 11d Ground section 12 Sheet bundle conveyance delay device 12a, 12d Lift motor 12b, 12e Sheet bundle support piece (sheet bundle receiver)
12c, 12f Chain 13 Push plate 13a Motor 13b Belt 14 Chuck 14a Motor 14b Belt 15 Rotary table 15a Guide plate 16 Fork positioning guide plate 17 Cutting unit 17a Support plate 17b Cutting blade 17c Holding plate 17d Cutter cylinder 17e Presser plate 17f Pressure cylinder 17g Motor 17h Screw shaft 18 Stacker 19 Presser plate

Claims (2)

A first transport mechanism having a single sheet bundle receiver and moving up and down at a high speed; and a second transport mechanism having a plurality of sheet bundle receivers and forming a bottom sheet bundle receiver and rising. The transport mechanism receives the sheet bundle raised by the first transport mechanism by the sheet bundle receiver formed at the lowermost stage and raises the sheet bundle by one stage, and the sheet bundle of the uppermost sheet bundle receiver of the second transport mechanism. A sheet bundle conveyance delay device characterized in that the sheet bundle conveyance delay device is carried out. The lowermost sheet bundle to be raised by one stage is discharged from the lowermost sheet bundle receiver received from the first conveying mechanism onto the sheet bundle of the first conveying mechanism. The sheet bundle conveyance delay device according to claim 1, wherein the sheet bundle is a plurality of sheet bundles obtained by superimposing the discharged sheet bundle.

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