JP4540109B2 - Binder clamper device - Google Patents

Description

  The present invention relates to a clamper device for a bookbinding machine, and more particularly to a clamper device for a bookbinding machine for holding a bookbinding target body and performing operations necessary for bookbinding on the booklet.

In order to bind a single book, it is necessary to perform operations such as gluing the book to be bound and pasting a cover on the spine.
For this reason, the bookbinding machine needs a clamper device for holding the bookbinding object and performing operations such as gluing and covering the booklet.
Conventionally proposed examples and used examples in the clamper apparatus of such a bookbinding machine will be described. FIGS. 5A and 5B are a top view and a side view for explaining a general configuration of the bookbinding machine.

  The bookbinding machine 1000 includes a clamper device 100x, a milling unit 200, a gluing unit 300, a cover pasting unit 400, and a moving shaft 500, and the clamper device 100x holding the body 900 moves along the moving shaft 500. Then, the main body 900 has a configuration and structure in which the back portion is milled, glued, and a cover is attached.

A first example of a clamper device in such a bookbinding machine (that is, a first example of a clamper device for a bookbinding machine in the background art) will be described with reference to FIGS. 6 (a) and 6 (b).
In the first example of the clamper device of the bookbinding machine in the background art, the adjustment of the initial distance between the movable clamp plate 607 and the fixed clamp plate 608 that sandwich the main body is adjusted according to the thickness of the main body. It is supposed to be done with. The movable clamp plate 607 is moved relative to the fixed clamp plate 608 to hold the body by rotating the motor 640, rotating the rotating shaft 641 and rotating the cam 642, and by the pressure of the spring 625. The clamping pressure is obtained (for example, see Patent Document 1).

A second example of the clamper device of the bookbinding machine in the background art has a structure as shown in FIGS. 7A and 7B, and the feed screw shaft is rotated by the clamp plate drive motor 739 to move the movable side. The clamp plate, that is, the clamp plate 737B is moved, and the body is sandwiched between the clamp plate on the fixed side, that is, the clamp plate 737A. Further, when the body is sandwiched, an overcurrent flows through the clamp plate drive motor 739. This overcurrent is detected by an overcurrent detector (not shown), the clamp plate drive motor 739 is stopped, and the clamp is driven. The plate 737B is stopped (see, for example, Patent Document 2).
Japanese Patent No. 3165955 Japanese Patent No. 2623339

  In the first example, the clamper device of the bookbinding machine in the background art described above includes a motor 640 for driving the cam 642, a motor for adjusting an initial interval between the fixed clamp plate 608 and the movable clamp plate 607, that is, an adjustment screw motor. 652 has to be provided separately, so that there is a problem that the structure becomes complicated and the cost is high, and if the thickness of the body changes, the pinching pressure also changes, and the thick body Has a high clamping pressure and loads the device.On the other hand, there is a danger that the clamping pressure is too weak for the thin body and the body may be displaced, and the thickness of the body cannot be detected by the device. There was a problem that the thickness had to be entered in advance.

  In the second example, the clamping pressure (clamping force) is detected by an overcurrent. Therefore, there is a problem in that the clamping force varies due to component mounting errors or the clamping force is too strong. Since the load is applied to the screw shaft, there is a problem that the life of the parts is shortened and the motor is overloaded, which causes a failure.

  The object of the present invention is to reduce the cost by reducing the number of motors to one, in view of the problems of the background art described above, and to detect the thickness of the body to make the clamping pressure appropriate. Thus, it is an object of the present invention to provide a clamper device for a bookbinding machine that can prevent a misplacement or an overload of a motor or the like and extend its life.

The clamper device of the bookbinding machine of the present invention is:
A clamper device for a bookbinding machine for holding a bookbinding object and performing bookbinding operations on the book, and has the following configurations.
(B) When holding the body, the receiving side clamp plate that contacts and holds one of the surfaces of the body, and (b) when holding the body, moves in a direction approaching the receiving side clamp plate and The pressing side clamp plate is moved by rotating the pressing side clamp plate (c) that contacts the other surface of the main body and presses the main body against the receiving side clamp plate. And the receiving side clamp plate, and after each bookbinding operation, the screw shaft (d) is moved based on a screw shaft (d) control signal that moves the pressing side clamp plate away from the receiving side clamp plate. Screw shaft drive control unit (e) for driving and rotating the shaft (e) Guide shaft (f) for holding and guiding the receiving side clamp plate and the pressing side clamp plate so that each bookbinding operation can be performed A first frame body at the receiving side clamp side end portion and a second frame body (g) end of the pressing side clamp side end portion that hold the id shaft at both ends thereof are fixed to the first frame body. The other end is fixed to the receiving side clamp plate, and when holding the body, one end of a spring (chi) that pressurizes between the receiving side clamp plate and the pressing side clamp plate is fixed to the second frame body, and the other end A restricting member that restricts the dimension between the second frame body and the receiving side clamp plate so as not to be smaller than a preset dimension. When the body is clamped by rotating, the pressing side clamp plate is moved in the direction of the receiving side clamp plate to clamp the body between the clamp plates, and the amount of spring compression by rotating the screw shaft is further reduced. Detecting and stopping the rotation of the screw shaft, Bookbinding work after the end of this body pinching operation control circuit for moving in a direction away from the receiving side clamping plate the pressing-side clamping plate

  The body clamping operation control circuit is the clamper device of the bookbinding machine including a spring compression amount adjusting means for stopping the rotation of the screw shaft.

  The body clamping operation control circuit may be a clamper device for the bookbinding machine that includes a spring compression amount measuring unit capable of measuring the compression amount of the spring.

  Further, in addition to the configuration of the clamper device of the bookbinding machine, the dimension between the second frame body and the receiving side clamp plate and the initial position of the pressing side clamp plate when the regulating member is in contact with the receiving side clamp plate And a body thickness measuring means for measuring and storing the thickness of the body from the amount of movement.

  In the present invention, when the body is clamped, the pressing side clamp plate is stopped by the amount of compression of the spring.Therefore, there is no variation in the tightening force due to the mounting error of the component parts, and a stable clamping pressure can be obtained. Obtainable. In addition, even if the body has a different thickness for each book, it is controlled so that the same spring pressure is obtained, so that it is possible to prevent the device from being overloaded by the pinching pressure being too strong. There is no such thing as the pressure is too weak and the body is displaced. Therefore, the life can be extended.

Further, since the initial position setting of the pressing side clamp plate and the body clamping operation can be performed by a single common motor, the entire apparatus can be simplified and the cost can be reduced.
Further, since the body clamping pressure can be adjusted by the spring compression amount adjusting means, the optimum clamping pressure can be easily obtained even if the paper quality or the like changes.

  Furthermore, even if the thickness of the body changes, the body thickness measuring means or the like performs a clamping operation suitable for the body, so that adjustment of each part can be simplified.

The best mode for carrying out the present invention is:
A clamper device of a bookbinding machine for holding a bookbinding target body and performing bookbinding operations on the book body, and has the following configurations.
(B) When holding the body, the receiving side clamp plate that contacts and holds the body by contacting one side of the body (b) When holding the body, move in the direction approaching the receiving side clamp plate and The pressing side clamp plate is moved by rotating the pressing side clamp plate (c) which contacts the other surface of the main body and presses the main body against the receiving side clamp plate. And the receiving side clamp plate, and after the completion of each bookbinding operation, the screw shaft (d) is moved based on a screw shaft (d) control signal that moves the pressing side clamp plate away from the receiving side clamp plate. Screw shaft drive control unit (e) for driving and rotating the shaft (e) Guide shaft (f) for holding and guiding the receiving side clamp plate and the pressing side clamp plate so that each bookbinding operation can be performed The first frame body at the receiving side clamp side end and the second frame (g) end of the pressing side clamp side end, which hold the end shaft at both ends thereof, are fixed to the first frame body. When the other end is fixed to the receiving side clamp plate and the body is clamped, one end of a spring (chi) that pressurizes between the receiving side clamp plate and the pressing side clamp plate is fixed to the second frame body, and the other end A regulating member that restricts the dimension between the second frame body and the receiving side clamp plate so as not to be smaller than a preset dimension. When the body is clamped by the rotation control, the pressing side clamp plate is moved in the direction of the receiving side clamp plate to clamp the body between the clamp plates, and further the amount of compression of the spring by rotating the screw shaft is increased. Detect and stop the rotation of the screw shaft, Bookbinding work after the end of this body pinching operation control circuit for moving in a direction away from the receiving side clamp plate the pressing-side clamping plate

The body clamping operation control circuit includes a spring compression amount adjusting means for stopping the rotation of the screw shaft,
Moreover, it has the structure containing the spring compression amount measuring means which can measure the compression amount of the said spring.

  Furthermore, in addition to the configuration of the clamper device of the bookbinding machine, the dimension between the second frame body and the receiving side clamp plate and the pressing side clamp plate in a state where the regulating member is in contact with the receiving side clamp plate. There is a body thickness measuring means for measuring and storing the body thickness from the initial position and the movement amount.

Next, embodiments of the present invention will be described with reference to the drawings.
1 (a) to 1 (c) are side views of the apparatus shown in the order of the body clamping operation for explaining one embodiment of the present invention, and FIGS. 2 to 4 are FIGS. 1 (a) to (c). It is an apparatus top view corresponding to the shown body clamping operation order.

The clamper device of the bookbinding machine in this embodiment is an apparatus for holding a bookbinding target body 900 and performing each bookbinding operation on the booklet 900, and has the following configurations.
(A) When clamping the body, the receiving side clamp plate 110 that contacts and holds one side of the body 900 to receive and hold the body 900
(B) When the body is clamped, the pressing side clamp plate 120 moves in a direction approaching the receiving side clamp plate 110 and contacts the other surface of the main body 900 to press the main body 900 against the receiving side clamp plate 110.
(C) The pressing side clamp plate 120 is moved by rotating, and the main body 900 is clamped between the pressing side clamp plate 120 and the receiving side clamp plate 110 when the main body is clamped. Screw shaft 130 for moving the pressing side clamp plate 120 away from the receiving side clamp plate 110
(D) A screw shaft drive control unit 140 composed of a motor 141, a gear mechanism, and the like that rotates and drives the screw shaft 130 based on the control signal and stops the rotation.
(E) A guide shaft 150 that holds and guides the receiving side clamp plate 110 and the pressing side clamp plate 120 so that each bookbinding operation is possible.
(F) A first frame 161 at the receiving side clamp plate 110 side end and a second frame body 162 at the pressing side clamp plate 120 side end holding the guide shaft 150 at both ends thereof.
(G) One end is fixed to the first frame 161 and the other end is fixed to the receiving-side clamp plate 110, and the spring 170 pressurizes between the receiving-side clamp plate 110 and the pressing-side clamp plate 120 when holding the body.
(H) One end is fixed to the second frame 162, the other end abuts on the receiving side clamp plate 110, and the dimension between the second frame 162 and the receiving side clamp plate 110 is preset. A regulating member 180 that regulates the size so as not to be smaller than the dimension.
(L) When rotating the screw shaft 130 and holding the body, the pressing side clamp plate 120 is moved toward the receiving side clamp plate 110 to hold the body 900 between the clamp plates (110, 120). The clamping amount is detected by detecting the amount of compression of the spring 170 by rotating the screw shaft 130, stopping the rotation of the screw shaft 130, and moving the pressing side clamp plate 120 away from the receiving side clamp plate 110 after each bookbinding operation. Body clamping operation control circuit 190 including stop position sensor unit 191 and clamper initial position sensor unit 193

  The body clamping operation control circuit 190 includes spring compression amount adjusting means (not shown) that stops the rotation of the screw shaft 130 according to the compression amount of the spring 170 and stores the stop timing. Furthermore, a spring compression amount measuring means is also included which can measure the compression amount of the spring, for example, by rotation of the screw shaft 130, stop timing, and the like.

  Further, the apparatus of this embodiment includes a body 900 in the body clamping operation control circuit 190 based on the size between the second frame 162 and the receiving side clamp plate 110 by the regulating member 180 and the amount of movement of the pressing side clamp plate 120. A body thickness measuring means for measuring and storing the thickness dimension of the body is provided.

Therefore, the apparatus according to this embodiment has all the functions and effects described in the section of the effects of the invention described above.
As shown in FIGS. 2 to 4, two screw shafts 130, guide shafts 150, springs 170, and restricting members 180 are provided, and the receiving side clamp plate 110 and the like are arranged at both ends thereof. By performing operations such as guide holding and driving in the portion, each operation can be performed stably.

  A collar 135 is fixed to the screw shaft 130 on the outer side (left side) of the first frame 161. When the screw shaft 130 moves to the right, the collar 135 causes the first frame 161 to be the same. Move in the direction.

Next, the body clamping operation in this embodiment will be described with reference to FIGS. 1 (a) to (c) to FIG. 2 is a plan view corresponding to FIG. 1A, FIG. 3 is a plan view corresponding to FIG. 1B, and FIG. 4 is a plan view corresponding to FIG.
The initial state is a state before arrangement of the main body 900 in FIGS.
In this initial state, the pressing-side clamp plate 120 is detected by the clamper initial position sensor unit 193 (including the optical sensor 134) and remains at that position.

In the state of FIG. 1A and FIG. 2, the body 900 is inserted between the pressing side clamp plate 120 and the receiving side clamp plate 110.
Then, the motor 141 rotates to rotate the screw shaft 130.
Since the screw shaft 130 and the pressing-side clamp plate 120 are screwed together, the pressing-side clamp plate 120 moves to the left in the drawing by the rotation of the screw shaft 130.
Thereafter, as shown in FIGS. 1B and 3, the pressing-side clamp plate 120 abuts against the body 900 and sandwiches the body 900 between the pressing-side clamp plate 120 and the receiving-side clamp plate 110.
Here, the receiving side clamp plate 110 is completely fixed.
Although the screw shaft 130 continues to rotate, the pressing side clamp plate 120 cannot move to the left in the drawing because the receiving side clamp plate 110 is completely fixed. Therefore, after the pressing-side clamp plate 120 contacts the body 900, the screw shaft 130 itself moves to the right in the drawing by the rotation of the screw shaft 130. Since the collar 135 is provided on the screw shaft 130, the first frame body 161, the guide shaft 150, the second frame body 162, the regulating member 180, and the screw shaft drive control unit 140 are all provided by the collar 135. Move to the right in the figure.
When the nipping stop position sensor unit 191 (including the optical sensor 192) detects the movement of the first frame 161, the motor 141 is stopped and nipping is completed (the state shown in FIGS. 1C and 4).

When the first frame body 161 moves to the right, the distance of the receiving side clamp plate 110 is shortened, so that the spring 170 is contracted. At the same time, the regulating member 180 is separated from the receiving side clamp plate 110. The spring 170 biases the first frame 161 to the left in the drawing. The urging force is transmitted to the pressing side clamp plate 120 through the screw shaft 130, and becomes an urging force that urges the pressing side clamp plate 120 toward the receiving side clamp plate 110. That is, the urging force of the spring 170 becomes the clamping force of the body 900. Although the biasing force of the spring 170 also acts on the receiving side clamp plate 110, the receiving side clamp plate 110 is completely fixed, so the biasing force on the receiving side clamp plate 110 does not act on the body clamping at all. .
Here, while the restricting member 180 is in contact with the receiving side clamp plate 110, the biasing force of the spring 170 becomes a force that comes into contact with the receiving side clamp plate 110 of the restricting member 180. Does not work. The clamping force with respect to the body 900 is generated at the moment when the regulating member 180 is separated from the receiving side clamp plate 110.

Next, the reason why the clamping force is constant even when the thickness of the body changes will be described.
Since the optical sensor 192 is completely fixed, the arrival of the first frame 161 is detected and the motor 141 is stopped. Even if the thickness of the body changes, if the amount of movement from when the first frame 161 starts moving until it is detected by the optical sensor 192 and stopped, the length of the spring 170 after the body is clamped Since the same is true, the same clamping force acts on the body regardless of the thickness of the body.

  Further, the body clamping force can be adjusted by adjusting the position of the optical sensor 192 in the horizontal direction in the figure. When the optical sensor 192 is moved in the left direction, the clamping force is weakened, and when it is moved in the right direction, it is increased.

Further, the thickness of the body can be detected by the amount of rotation of the motor 141 from when the motor 141 starts to drive until the pressing side clamp plate starts moving until it stops. The amount of rotation is obtained by the number of pulses of the motor 141 as a stepping motor, or is measured by providing an encoder on the motor output shaft.
If the home position of the pressing side clamp plate 120 is determined in advance and the pressing side clamp plate 120 starts to move from this home position, the thickness of the body can be uniquely calculated from the motor rotation amount.

As a merit by detecting the thickness of the body,
First, if the pressing side clamp plate 120 is returned to the home position each time the main body is put in, the useless movement of the pressing side clamp plate 120 increases. The amount of movement can be reduced by returning to the standby position. It can be used as a reference value for determining this standby position,
Secondly, in the gluing bookbinding machine, the body held by the clamper is moved to the milling unit, the gluing unit, and the cover sheet pasting unit for bookbinding. There is a guide plate that must be adjusted in position according to the thickness of the body in the milling part and the cover sticking part, so if the thickness is detected, the guides in the milling part and the display sticking part are automatically adjusted. The point that it can be done automatically is raised.

It is an apparatus side view shown to the body clamping operation | movement order for demonstrating one Example of this invention. It is an apparatus top view corresponding to the first operation | movement in the body clamping operation | movement order explanatory drawing shown by FIG. It is an apparatus top view corresponding to the middle operation in the body clamping operation order explanatory diagram shown in FIG. It is an apparatus top view corresponding to the last operation | movement in the body clamping operation | movement order explanatory drawing shown by FIG. It is the top view and side view for demonstrating the general structure of the bookbinding machine in background art. It is an apparatus top view and AA arrow view which show the 1st example of the clamper apparatus of the bookbinding machine in background art. FIG. 6 is a perspective view and a partial cross-sectional top view illustrating a second example of a clamper device of a bookbinding machine in the background art.

Explanation of symbols

110 receiving side clamp plate 120 pressing side clamp plate 130 screw shaft 135 collar 140 screw shaft drive control unit 141 motor 150 guide shaft 161 first frame 162 second frame 170 spring 180 regulating member 190 body clamping operation control circuit 191 Nipping stop position sensor unit 192 Optical sensor 193 Clamper initial position sensor unit 194 Optical sensor 200 Milling unit 300 Gluing unit 400 Cover sheet pasting unit 500 Moving shaft 607 Movable clamp plate 608 Fixed clamp plate 620 Belt 621 Mounting bracket 622 Base bracket 623 Guide shaft 624 Flat metal fitting 625 Spring 640 Motor 641 Rotating shaft 642 Cam 645 Motor 652 Adjustment screw motors 737A and 737B Clamp plate 739 Clamp plate drive motor 745 Feed screw shaft 900 Main body

Claims (4)

A clamper device of a bookbinding machine for holding a bookbinding target body and performing each bookbinding operation on the book body, and having the following configurations.
(B) When holding the body, the receiving side clamp plate that contacts and holds one of the surfaces of the body, and (b) when holding the body, moves in a direction approaching the receiving side clamp plate and The pressing side clamp plate is moved by rotating the pressing side clamp plate (c) that contacts the other surface of the main body and presses the main body against the receiving side clamp plate. And the receiving side clamp plate, and after each bookbinding operation, the screw shaft (d) is moved based on a screw shaft (d) control signal that moves the pressing side clamp plate away from the receiving side clamp plate. Screw shaft drive control unit (e) for driving and rotating the shaft (e) Guide shaft (f) for holding and guiding the receiving side clamp plate and the pressing side clamp plate so that each bookbinding operation can be performed A first frame body at the receiving side clamp side end portion and a second frame body (g) end of the pressing side clamp side end portion that hold the id shaft at both ends thereof are fixed to the first frame body. The other end is fixed to the receiving side clamp plate, and when holding the body, one end of a spring (chi) that pressurizes between the receiving side clamp plate and the pressing side clamp plate is fixed to the second frame body, and the other end A restricting member that restricts the dimension between the second frame body and the receiving side clamp plate so as not to be smaller than a preset dimension. When the body is clamped by rotating, the pressing side clamp plate is moved in the direction of the receiving side clamp plate to clamp the body between the clamp plates, and the amount of spring compression by rotating the screw shaft is further reduced. Detecting and stopping the rotation of the screw shaft, Bookbinding work after the end of this body pinching operation control circuit for moving in a direction away from the receiving side clamping plate the pressing-side clamping plate   2. The clamper device for a bookbinding machine according to claim 1, wherein the body clamping operation control circuit includes a spring compression amount adjusting means for stopping the rotation of the screw shaft. The body clamping operation control circuit includes a spring compression amount measuring unit capable of measuring the compression amount of the spring.
The clamper device of the bookbinding machine according to claim 1. In addition to the structure of the clamper device of the bookbinding machine according to any one of claims 1 to 3, the second frame body / receiving side in a state where the regulating member is in contact with the receiving side clamp plate. It has a body thickness measuring means for measuring and storing the thickness of the body from the dimensions between the clamp plates and the initial position and moving amount of the pressing side clamp plate,
A clamper device for bookbinding machines.

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