JP2003071779A - Rotary paper sheet cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe and operable rotary form cutter device capable of cutting three edges of a stack of paper sheets with a simple motion mechanism and reducing the space for the device. SOLUTION: A stack of paper sheets 11 is aligned and mounted on a rotary table 15, which is rotated by 90 degrees. Then, a cutter unit 17 with a cutting blade 17b engaged with a screw shaft 17h rotated by a motor is moved to an end of the stack of paper sheets 11 rotated by 90 degrees, and the tail edge 11d, the bolt 11c, and the head 11b of the paper sheets 11 are cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the three parts of the top, the ground and the edge of a booklet that has been covered with a bundle of sheets.
The present invention relates to a turning sheet cutting device that cuts and aligns by one cutting unit.

[0002]

2. Description of the Related Art For example, a bookbinding machine is well known in which hot melt glue is applied to the back surface of the main body (contents of the book) and a booklet with a cover is successively produced and discharged. A booklet bound by such a bookbinding machine may be trimmed by trimming the top and bottom and the edge of the booklet.
FIG. 9 shows an example of this case. The booklets attached by the bookbinding machine 1 and ejected one after another are conveyed by the conveyor 2 which moves at a speed corresponding to the bookbinding processing speed of the bookbinding machine 1.

Each booklet conveyed by the conveyor 2 is stacked in a predetermined number by a book stacking mechanism 3, and the stacked booklets are sent to a conveyor 4 which moves at a low speed, and a hot-melt adhesive applied to the back surface of the main body. Is solidified by cooling and is conveyed to the three-way cutting machine 5. Generally, the three-sided cutting machine 5 has a cutting unit 5a for cutting the top of the booklet, a cutting unit 5b for cutting the bottom of the booklet, and a cutting unit 5c for cutting the fore edge of the booklet arranged in a substantially U-shape. There is. Each of the cutting units 5a, 5b, 5c has a movable cutting blade and a holding plate driven by a hydraulic cylinder or the like,
At the time of cutting, the edge of the booklet is pressed by the holding plate and the cutting blade is driven to cut.

The booklet conveyed by the conveyor 4 is arranged in a substantially U-shape and is sent to the inside of the U-shape of the cutting unit, and drives the cutting blades and the holding plate of the cutting unit 5a and the cutting unit 5b to drive the booklet to the top. Trim the edges of the base and ground,
Next, it is sent to the cutting unit 5c (slightly apart to avoid mechanical interference), and the cutting blade and the pressing plate of the cutting unit 5c are driven to cut and align the edge of the fore edge of the booklet. After trimming the edges of the edge, the booklet is ejected from the cutting machine 5.

[0005]

In the cutting by the three cutting units arranged in the substantially U-shape as described above, a space or a booklet (hereinafter, referred to as a space for installing many operating mechanisms) is formed.
It is called a stack of paper. ) Requires a space for linear movement of the booklet for two-step cutting of the top and bottom and the edge, it is difficult to miniaturize the cutting machine, and three cutting blades are arranged in a narrow space. Therefore, there is a problem in that the risk of cutting work is high, many safety devices are required for that purpose, and further, the height of the cutting blade is extremely difficult to adjust when exchanging the cutting blade.

The present invention has been made in view of the above circumstances, and it is possible to perform a three-way operation of a sheet bundle with a simple operation mechanism, which is highly safe, easy to operate, and space-saving. An object is to provide a sheet cutting device.

[0007]

According to a first aspect of the present invention, there is provided a rotary table for positioning and placing a sheet bundle, a conveyor for conveying the sheet bundle to the rotary table, and a conveyor table for placing the sheet bundle on the rotary table. A transport unit for transporting the sheet bundle to the discharge unit and a cutting unit having a movable cutting blade and a pressing plate are provided, and the sheet bundle placed on the rotary table is rotated every time the rotary table is rotated by a predetermined angle. The cutting unit is moved to the edge portion, and the edge portion of the sheet bundle positioned by the rotation of the rotary table is cut by the cutting blade of the cutting unit.

According to a second aspect of the present invention, in a transporter for transporting a sheet bundle to the rotary table, a sheet stack for each book to be loaded is stacked and lifted downward in the order of loading, and a stack lifting mechanism. It is characterized by comprising a moving mechanism that pushes and moves the stack of sheets that has been raised by the stack raising mechanism.

According to the present invention, the top portion, the bottom portion and the edge of the sheet bundle can be cut by the rotary table for positioning and fixing the sheet bundle and the single cutting unit moving toward and away from the rotary table. Therefore, the number of highly dangerous cutting units is small, the installation space can be reduced due to the small number, and the safety can be improved. Also,
If a stacking and lifting mechanism that stacks and moves up in the order of loading is provided to a transporter that transports a bundle of sheets to the rotary table, the hot melt glue can be cooled and solidified by this lifting mechanism.
It is possible to reduce the space required for the cooling and solidification of the hot melt adhesive in the case where the bookbinding to the cutting are performed consistently.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view schematically showing the overall configuration of a sheet-cutting and cutting device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view thereof, and FIGS.
6 is an operation explanatory view of the stack raising mechanism, FIG. 6 is an explanatory view of a cutting operation, and FIGS. 7 and 8 are operation explanatory views of the holding plate.

In FIG. 1, 11 is a bundle of sheets of paper (a booklet that is glued and bound, 11a is a back surface to which glue and a cover is attached, 11b is a top portion, 11c edge portion, 1
1d is the base. ), 12 is a stack raising mechanism, 13
Is a push plate (may be a chuck), 14 is a chuck, 1
5 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 rotatable pressing plate that presses and fixes a sheet bundle on the rotary table.

The stack lifting mechanism 12 is installed by a first lift motor 12a, which is a first lifting mechanism composed of four chains 12c which are revolving around a sheet bundle supporting piece 12b, and a second lifting mechanism. The motor 12d is composed of a second lifting mechanism composed of four chains 12f which are arranged around the sheet bundle supporting pieces 12e at appropriate intervals and which are revolvingly moved.

The operation of the stack raising mechanism 12 is performed by a lift motor 12a and a second lift motor 12d (not shown).
The maximum thickness of the sheet bundle to be cut is set in the control device that controls the drive of the sheet bundle, and the thickness information of one sheet bundle to be cut is input from the sheet bundle thickness manual or the bookbinding machine or the printing machine. Then, the number of sheets to be stacked is calculated based on this information and the maximum thickness, and the stacking operation is started based on the calculation result.

In the operation, when the calculation result is, for example, three sheets, one sheet bundle is placed on the sheet bundle supporting piece 12b of the first raising mechanism which is waiting at the bottom as shown in FIG. 4 (a). 1
When 1 is carried in, the second lift motor 12d is driven in the opposite direction, and the sheet bundle (two in the figure) stacked on the sheet bundle support piece 12e located at the lowermost stage of the second lifting mechanism.
Are dropped and stacked on one sheet bundle 11 carried on the sheet bundle support piece 12b of the first raising mechanism (FIG. 4).
(B)). In this case, the three books located at the uppermost stage of the lowermost stage of the second raising mechanism descend, but are still held on the sheet bundle supporting piece 12e of the second raising mechanism.

Next, the first lift motor 12a is driven, and the three bundles of sheets stacked on the sheet bundle supporting piece 12b of the first raising mechanism are carried to the uppermost portion of the first raising mechanism ( 4 (c)), the second lift motor 12d is driven in the forward direction to be received on the sheet bundle supporting piece 12e of the second lifting mechanism, and continues to lift by one step, and the first lifting mechanism is not To the position (FIG. 4 (d)). The three books located at the uppermost stage of the lowermost stage of the second lifting mechanism due to the one-stage lifting are located at the top of the second lifting mechanism, and the three books are placed in front of the push plate 13.

That is, the sheet bundle carried into the first raising mechanism is once passed to the second raising mechanism and stands by, and when the next sheet bundle is carried into the first raising mechanism, the second raising mechanism is brought up. The stack of sheets passed to the mechanism and waiting is stacked on the stack of sheets carried into the first lifting mechanism, and the stack of sheets is stacked while repeating this procedure until the number of stacks of sheets obtained by calculation is reached. Transport to the top of the second lifting mechanism. When the sheet bundle 11 is thick, the sheet bundles 11 are not stacked, but the sheet bundle 11 is intermittently conveyed to the uppermost part of the second lifting mechanism. By this conveyance, the glue applied to the back surface 11a of the sheet bundle 11 is cooled and solidified. In addition, a sheet bundle that is short in time after gluing is positioned on the lower part of the stack, and the deviation during cutting is reduced.

The push plate 13 is fixed to a belt 13b that reciprocates by the drive of a motor 13a, and the end portion of the sheet bundle 11 conveyed to the uppermost portion of the second raising mechanism (the top portion 1 in the drawing is shown).
1b) is pushed to convey to the rotary table 15. The rotary table 15 is provided with a guide plate 15 a, and the guide plate 15 a
a is set to a position parallel to the conveying direction of the sheet bundle 11 when the sheet bundle 11 is placed and taken out. Push plate 1
The back surface 11a of the sheet bundle 11 conveyed by the movement of 3
Is brought into contact with the guide plate 15a and placed on the rotary table 15 at a predetermined position. In this state, the rotary table 15 is driven by the motor 16a at a position facing the guide plate 15a.
An edge positioning guide plate 16 that approaches or separates from the sheet bundle 1 placed on the rotary table 15 is arranged.
The small edge portion 11c of 1 is pressed to align the small edge portion 11c.

After positioning the sheet bundle 11 on the rotary table 15 in this manner, the rotary press cylinder 19a
Drive the presser plate 19 to move the sheet bundle 11 to the rotary table 15
Then, the small edge positioning guide plate 16 is separated from the rotary table 15 to stand by, and is placed in a state in which it can be rotated by driving the motor 15b.

The cutting unit 17 (see also FIG. 6) has a holding plate 17c connected to a cutter cylinder 17d having a cutting blade 17b attached thereto and a presser cylinder 17f connected to a pressure cylinder 17f for pressing an edge portion of the sheet bundle 11 during cutting. Board 17e
Has a support plate 17a slidably attached to the support plate 1
7a is screwed with a screw shaft (feed screw) 17h which is rotated by driving a motor 17g, and is moved in a direction toward or away from the rotary table 15 by driving the motor 17g. The position of the cutting unit 17 is determined by 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 is set by a drive control device for a motor 17g (not shown).

When the sheet bundle 11 is positioned and fixed on the rotary table 15, the rotary table 15 rotates 90 degrees clockwise and stops, as shown in FIG. At this time, the cutting unit 17 is positioned at a position where the cutting blade 17b is located above the end of the sheet bundle 11 placed on the rotary table 15 on the side of the base 11d. Then, as shown in FIG. 7, the pressure cylinder 17f is driven to lower the pressing plate 17e, and the end portion of the sheet bundle 11 on the side of the base portion 11d (the top portion 1 in FIG. 7).
1b) is pressed against a pedestal 17i provided on the support plate 17a at a pressure set by the proportional control solenoid valve 20, and at substantially the same time the cutter cylinder 17d is driven to cut the cutting blade 17b.
The edges of the base 11d are trimmed with.

After pressing the edge of the base portion 11d, the holding plate 1 is cut.
7e and the cutting blade 17b stand by at the original upper position,
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 located above the edge of the bundle of sheets 11 placed on the rotary table 15 on the side of the fore edge 11c (when d2 <d1, the rotation center of the rotary table 15 from the center of rotation). The distance is different.),
Similar to the cutting of the edge of the base portion 11d, the pressing plate 17e and the cutting blade 17b are driven to cut and align the edge of the edge portion 11c. After that, similarly turn the rotary table 15 clockwise 90
It rotates once and stops, and the edges of the top portion 11b are cut and aligned. Then, the rotary table 15 is rotated to return the guide plate 15a to the original standby position. At this time, the rotary press cylinder 19
a is driven, and the pressing of the pressing plate 19 is released.

The pressure setting by the proportional control solenoid valve 20 is performed by the control device of the pressure cylinder 17f (not shown).
It is performed as shown in. That is, the press pressure per unit length of the sheet bundle to be cut is set in the control device, the size data of the sheet bundle to be cut is input from the manual or bookbinding machine or the printing machine, and the small edge portion of the sheet bundle to be cut is cut. The pressure and the pressure at the time of cutting the top and bottom are calculated, and the voltage corresponding to each pressure is obtained. When cutting the edge of the base portion 11d of the sheet bundle 11, the proportional control solenoid valve 20 is controlled by the voltage corresponding to the pressing of the base portion obtained by the calculation, and the pressing force thereof controls the end portion of the base portion 11d of the sheet bundle 11. Press. Similarly, when cutting the edge of the edge portion 11c of the sheet bundle 11, the proportional control solenoid valve 20 is operated at a voltage corresponding to the pressing of the edge portion 11c calculated.
When the edge of the top portion 11b of the sheet bundle 11 is cut, the proportional control solenoid valve 20 is controlled by a voltage corresponding to the pressing of the top portion 11b obtained by calculation, and the pressing force of each proportional sheet solenoid valve 20 is used.
Press the end of 1.

Optimal cutting can be obtained by controlling this pressing force. In other words, since the top and bottom of the stack of sheets have different lengths, pressing the long fore with the pressing force of the shorter top and bottom causes insufficient pressing force, and it is not possible to obtain aligned fronts. Also, when pressing the short top and bottom with the press of the small end of the length, the pressing force becomes excessive and the top and bottom of the sheet bundle are tightly tightened, but the optimal cutting is obtained by controlling the pressing force. Will be available. Further, since this control is automatically performed, the cutting process can be performed at high speed, and the work of sequentially adjusting the pressing force at the cutting position is omitted, and the labor for the adjustment is reduced.

When the cutting of the edge of the top portion 11b is completed and the rotary table 15 is rotated to return the guide plate 15a to the original standby position, the chuck fixed to the belt 14b reciprocally driven by the motor 14a is driven. 14 turntable 15
The sheet bundle 11 is moved toward, and the cut sheet bundle 11 on the rotary table 15 is gripped to return to the original position, and the sheet bundle 11 is discharged to the stacker 18.

The above-described embodiment is an in-line case in which bookbinding with hot melt glue and cutting processing are carried out in a consistent manner, and a stack raising mechanism 12 is installed in the carry-in section. The mechanism 12 can be omitted if desired. In addition, the stack raising mechanism 12
Can also be used in a cutting machine in which a cutting unit is arranged in a substantially U shape.

[0026]

As described above, according to the present invention, the top portion, the bottom portion, and the edge portion of the sheet bundle are constituted by the rotary table for positioning and fixing the sheet bundle and one cutting unit moving toward and away from the rotary table. Since the three sides are cut, the structure of the three-sided cutting machine can be greatly simplified, and the size and size can be easily handled.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing the overall structure of a sheet-cutting and trimming device according to an embodiment of the present invention.

FIG. 2 is a plan view of the turning sheet cutting device shown in FIG.

FIG. 3 is a front view of the turning sheet cutting device shown in FIG.

FIG. 4 is an operation explanatory view of a stack raising mechanism of the turning sheet cutting device shown in FIG.

5A and 5B are operation explanatory views of the stacking and raising mechanism of the turning sheet cutting apparatus shown in FIG.

FIG. 6 is an explanatory diagram of a cutting operation of the turning sheet cutting device shown in FIG.

7A and 7B are operation explanatory views of a holding plate of the turning sheet cutting apparatus shown in FIG.

8A and 8B are operation explanatory views of a holding plate of the turning sheet cutting apparatus shown in FIG.

FIG. 9 is an explanatory view of a conventional three-way cutting machine.

[Explanation of symbols]

11 sheets of paper 11a back 11b Top 11c Small portion 11d ground 12 Stacking lift mechanism 12a, 12d lift motor 12b Paper bundle support piece 12c, 12f chain 13 Push plate 13a motor 13b belt 14 chuck 14a motor 14b belt 15 rotating table 15a guide plate 16 Edge 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 17i cradle 18 Stacker 19 Presser plate 20 Proportional control solenoid valve

Continued front page    (72) Inventor Tadaji Yamaguchi             1601 Jonoshita, Asahi, Shin-Asahi-cho, Takashima-gun, Shiga Prefecture             Local Horizon International Stock Association             In-house (72) Inventor Hiroshi Nakanishi             1601 Jonoshita, Asahi, Shin-Asahi-cho, Takashima-gun, Shiga Prefecture             Local Horizon International Stock Association             In-house (72) Inventor Tatsuo Uchida             1601 Jonoshita, Asahi, Shin-Asahi-cho, Takashima-gun, Shiga Prefecture             Local Horizon International Stock Association             In-house (72) Inventor Masato Nogawa             1601 Jonoshita, Asahi, Shin-Asahi-cho, Takashima-gun, Shiga Prefecture             Local Horizon International Stock Association             In-house F-term (reference) 3C021 BE02                 3C027 JJ09 JJ15

Claims (2)

[Claims] 1. A rotary table for positioning and placing a sheet bundle, a transporter for transporting the sheet bundle to the rotary table, a transporter for transporting the sheet bundle placed on the rotary table to a discharge unit, and a moving unit. A cutting unit having a free cutting blade and a holding plate, and each time the rotary table is rotated by a predetermined angle, the cutting unit is moved to the edge of the sheet bundle placed on the rotary table, and the rotary table A sheet-cutting and cutting device for turning paper, characterized in that an edge portion of a sheet bundle positioned by rotation of the sheet is cut by a cutting blade of the cutting unit. 2. A transporting device for transporting a sheet bundle to the rotary table, wherein a sheet bundle for each book to be loaded is stacked and lifted downward in the order of loading, and a stack lifted by the stack lifting mechanism. 2. The turning sheet cutting device according to claim 1, further comprising a moving mechanism that pushes and moves the stack of sheets.