JP5467640B2 - Three-way cutting machine - Google Patents

Description

  The present invention relates to a three-way cutting machine, and more particularly to setting of a standby position of a press plate that presses a booklet bundle against a cutting table.

A booklet bound by a bookbinding machine may be sent to a three-sided cutting machine, and the booklet bound by the three-way cutting machine may be trimmed in three directions: top, top, and ground. FIG. 3 (a, plan view) (b, cross-sectional view) shows a schematic configuration of an example of the three-way cutting machine in this case, and the three-way cutting machine 1 pushes along the back guide plate 3 with the conveying claw 2. Then, the small edge of the booklet bundle H stacked one or more books positioned in contact with the top and bottom positioning plate 4 is swung to align the booklet bundle H against the back guide plate 3 by swinging the small edge aligning plate 5.

When the top, the ground, and the edge are aligned, the clamp plate 6 a of the chuck 6 waiting on the back side of the booklet bundle H is lowered, and the booklet bundle H is pressed against the fixing machine base 6 b of the chuck 6. That is, the booklet bundle H is clamped and held between the clamp plate 6a of the chuck 6 and the fixed machine base 6b. When the booklet bundle H is held under pressure, the chuck 6 is moved toward the cutting table 7 to a position where the cutting position in the vicinity of the small edge of the booklet bundle H is directly below the small edge blade 10 (specified position), and the booklet is held under pressure. The bundle H is carried onto the cutting table 7. In this case, the upper surface of the fixing machine base 6b of the chuck 6 and the upper surface of the conveyance path surface 16 and the cutting table 7 are flush with each other, and the lower surface of the booklet bundle H on the side of the fixing machine base 6b slides on the upper surface of the conveyance path surface 16 and the cutting table 7. Move.

When the booklet bundle H is carried onto the cutting table 7, the press plate 8 is lowered from the standby position to press the booklet bundle H against the cutting table 7. When the booklet bundle H is pressed against the cutting table 7 by the press plate 8, the booklet bundle H is maintained in a state where the top, the ground and the fore edge are aligned by this pressing, so the chuck 6 releases the booklet bundle H and returns to the standby position. . On the other hand, the top / base / small edge 10 is cut from the standby position while the booklet bundle H on the cutting table 7 is pressed by the press plate 8 while the top / ground / blade 9 and the small edge 10 are lowered.

In the three-way cutting machine 1 of this example, the up-and-down movement of the clamp plate 6a of the chuck 6 is rotation of a feed screw 6d fixed to the rotation shaft of the motor 6c, and the linear movement of the chuck 6 is fixed to the rotation shaft of the motor 11. With the rotation of the feed screw 12, the press plate 8 is moved up and down by a linear movement of the feed screw 15 with the press plate 8 attached to the tip, which is screwed with a nut 14 that is rotated by the rotation of the motor 13. The movement and stop timing of the clamp 6a, the chuck 6 and the press plate 8 are performed by a program of a cutting control device that drives and controls each motor. Of course, the timing of the up-and-down movement of the top / base blade 9 and the fore edge blade 10 is also performed by the program of this cutting control device.

By the way, if the upper standby position (the standby position at the time of cutting) of the clamp plate 6a of the chuck 6 and the press plate 8 is set to a position sufficiently higher than the thickness height of the maximum booklet bundle H that can be cut by the three-way cutting machine 1. Regardless of the thickness of the booklet bundle H carried into the chuck 6, collision between the booklet bundle H and the clamp 6a and collision between the booklet bundle H carried into the cutting table 7 and the press plate 8 can be avoided. However, the number of booklet bundles to be cut is often changed depending on, for example, the effect state of glue in the case of glue binding, and when the number of booklet bundles H to be cut is small and the booklet bundle H is low in thickness, With the above setting, the distance traveled until the clamp plate 6a and the press plate 8 are tightened and pressed becomes larger, and the clamping plate 6a and the press plate plate 8 require a lot of time for clamping and pressing, and the cutting processing speed is increased. Decreases.

Therefore, in order to increase the cutting processing speed, the motor 6c that moves the clamp plate 6a of the chuck 6 up and down and the motor 13 that moves the press plate 8 up and down are servo motors equipped with a detector that detects a rotational position such as an encoder. A measuring instrument for measuring the thickness and height of the booklet bundle H is provided in the conveyance path for conveying the booklet bundle H to the chuck 6, and the chuck is based on the measured value of the thickness and height of the booklet bundle H measured by this measuring instrument. The set values of the standby positions of the clamp plate 6a and the press plate 8 are changed. In this way, by setting the standby positions of the clamp plate 6a and the press plate plate 8 to the optimum positions according to the thickness height of the booklet bundle H to be carried in, the clamp of the chuck 6 regardless of the thickness height of the booklet bundle H. The plate 6a and the press plate 8 need only always move a minimum amount, and the time required for tightening with the clamp plate 6a and the press plate 8 is shortened, thus preventing the reduction in the cutting processing speed as described above. Can do.

JP 2002-127077 A

  By the way, in the cutting machine, the booklet bundle to be cut is replaced with a press plate having a thickness that can be effectively pressed, and an operator arbitrarily selects a ball plate or sponge so that the press bundle does not leave a mark on the booklet bundle. A buffer plate such as a plate is attached. On the other hand, the basic setting of the standby position of the press plate is performed based on the input of the thickness height of the press plate. Therefore, when the press plate is replaced or the buffer plate is attached to the press plate, it is necessary to input the thickness and height of the replaced press plate and the press plate to which the buffer plate is attached. .

This input is performed by adding the error due to the measurement to the thickness and height of the press plate by the operator's measurement (the exact thickness of the press plate itself is not known). It may be different from the thickness height. When the thickness of the input press plate is higher than the actual thickness, the press plate moves to a higher portion, and the cutting processing speed decreases. In addition, when the thickness of the input press plate is lower than the actual thickness, there is a problem in that the press plate and the clamp plate of the chuck that transports the booklet bundle to be cut collide with each other and damage the machine.

The problem to be solved by the invention is that even if the thickness of the press plate is changed by changing the press plate or attaching a buffer plate to the press plate, the interval between the press plate and the booklet bundle to be automatically cut can be optimized. Thus, this problem is solved.

In order to solve the above problems, the present invention provides a chuck that transports a booklet bundle to be cut onto a cutting table, a press plate that presses the booklet bundle placed on the cutting table by the chuck, and the press plate. A cutting blade for cutting a predetermined position on the top, ground, and fore edge side of the pressed booklet bundle; and a setting means for setting a standby position of the press plate, and the press plate is moved from the standby position set in the setting means. In a three-way cutting machine formed by lowering and pressing a booklet bundle placed on the cutting table, a measuring unit is provided for measuring the thickness height of the press plate by lowering the press plate to the cutting table. When cutting the bundle, the standby position of the press plate is set based on the thickness and height of the press plate measured by the measuring means.

In the present invention, when the booklet bundle is cut, the press plate is lowered to the cutting stand, the thickness of the press plate is measured, and the standby position of the press plate is automatically set to the optimum position based on the measured value. Therefore, there is no need for the operator to input the thickness and height of the press plate, and it is possible to eliminate the reduction in the cutting processing speed generated based on the input and the damage of the machine due to the collision between the press plate and the clamp plate of the chuck. .

It is a block diagram of a part of a control device of a three-way cutting machine according to an embodiment of the present invention. It is explanatory drawing explaining the effect of the control apparatus shown in FIG. It is a block diagram which shows the structure of an example of a three-way cutting machine, (a) is a top view, (b) is sectional drawing.

Hereinafter, a three-way cutting machine according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. The structure itself of the three-way cutting machine is the same as that of the three-way cutting machine shown in FIG. 3, and the same or corresponding parts as those of the three-way cutting machine shown in FIG.

That is, in FIG. 1, 7 is a cutting table, 8 is a press plate with a buffer plate 8a attached thereto, 13 is a motor that drives the press plate 8, 14 is a nut that is fixed in position by rotation of the motor 13, and 15 is a nut 14 The press plate 8 is attached to the lower end of the feed screw 15 and the positioning of the press plate 8 is determined by the positioning of the lower end position. Accordingly, the position of the pressing surface for pressing the booklet bundle of the press plate 8 is a lower position obtained by adding the thickness and height of the input press plate 8.

Reference numeral 17 denotes a cutting control device, and 18 denotes a controller of the motor 13. The cutting control device 17 includes an arithmetic processing unit (CPU) 17a and a memory 17b for storing a program for executing arithmetic processing and data, and receives a cutting operation start command signal and performs cutting operation according to the program stored in the memory 17b. Execute. The memory 17b includes an area (set value memory) 17c for setting the upper limit position of the lower end of the feed screw 15.

Initially, the set value memory 17c is set to a height from the cutting table 7 when the lower end of the feed screw 15 is at the uppermost position (hereinafter, this position is referred to as an origin position). Then, when the thickness height of the press plate 8 is input, the thickness height is added to the origin position, and the added lower position is the upper limit position in this case of the surface that contacts the booklet bundle of the press plate 8. Become. When the thickness height of the booklet bundle to be cut in this state is input, the booklet bundle of the press plate 8 is applied to a height position obtained by adding a height (margin) necessary to hold down the thickness height of the booklet bundle. The set value in the set value memory 17c is rewritten so that the contacting surface is located.

The controller 18 has a memory for recording the position of the lower end of the feed screw 15 from the cutting table, and sequentially calculates the amount of descent from the origin position of the lower end of the feed screw 15 from the output of the encoder connected to the rotating shaft of the motor 13. The position from the cutting table at the lower end of the feed screw 15 when the output of the encoder is stopped (the position obtained by subtracting the descending distance from the distance between the origin position and the cutting table) is stored in the memory, and cutting is performed as necessary. Output to the control device 17.

When a cutting operation start command signal (or a test command signal) is input to the cutting control device 17, first, a signal for lowering the press plate 8 is output to the controller 18. The controller 18 receiving this signal drives the motor 13 to lower the press plate 8. As shown in FIG. 2 (a), the press plate 8 abuts on the cutting table, and the press plate 8 stops descending. The position from the cutting table corresponding to the position of the lower end of the feed screw 15 at the time of stopping is stored in the memory and output to the cutting control device 17. The cutting control device 17 to which the output is input is used to input the thickness height of the press plate 8.

At the time of actual cutting, the set value (the height position of the surface abutting against the booklet bundle of the press plate 8) in the set value memory 17c rewritten as described above is output to the controller 18, and the controller 18 which has input the set value. Drives the motor 13 to lower the press plate 8 to its set value and stop it. The stop position is set as the standby position of the press plate 8, and a predetermined timing (a booklet bundle is placed on the cutting table) from this standby position. At a predetermined timing (the timing when cutting with the cutting blade is finished) and return to the standby position.

Thus, since the thickness and height of the press plate are measured and input using the members and functions of the three-way cutting machine, the accurate thickness and height of the press plate are input and the buffer plate attached to the press plate. 2 (b, when buffer plates are stacked and pasted) (c, when one buffer plate is pasted) (d, when the weight of the press plate is increased) ), The surface of the press plate that contacts the booklet bundle can be held at the same height.

In the above embodiment, the press plate is moved up and down by a motor, but the press plate may be moved up and down by a piston rod of a hydraulic cylinder. In this case, the movement of the piston rod is detected by a rotary encoder. What should I do? Also, the thickness height of the booklet bundle is input in the same way as in the prior art by inputting the thickness height of the booklet bundle measured by the booklet bundle thickness height meter provided in the transport path for transporting the booklet bundle to the chuck. By doing so, the cutting processing speed can be further increased.

DESCRIPTION OF SYMBOLS 1 Three-way cutting machine 7 Cutting stand 8 Press plate 8a Buffer board 13 Motor 14 Position fixing nut 15 Feed screw 17 Cutting control device 17a Arithmetic processing unit (CPU)
17b Memory 17c Setting value memory 18 Motor controller

Claims (1)

A chuck that transports a booklet bundle to be cut onto a cutting table, a press plate that presses the booklet bundle placed on the cutting table by the chuck, and a top, ground, and fore edge side of the booklet bundle that is pressed by the press plate. A booklet bundle that includes a cutting blade that cuts a predetermined position and a setting unit that sets a standby position of the press plate, and is placed on the cutting table by lowering the press plate from the standby position set in the setting unit In the three-way cutting machine formed by pressing the press plate, the press plate is lowered to the cutting table and provided with measuring means for measuring the thickness height of the press plate, and the press plate measured by the measuring means at the time of cutting the booklet bundle A three-way cutting machine, wherein a standby position of the press plate is set based on the thickness and height of the press plate.

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