JPH0592679A - Valve opening / closing timing adjustment mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To allow the suction timing of soccer in the saddle stitch machine feeder to be adjusted regardless of whether the feeder is running or stopped. A movable valve 22 rotatably fitted into a hollow shaft 7 of a drum and having a suction hole 22a and an open hole 22b,
The hollow shaft 7 is fitted and fixed to the outside of the movable valve 22 so as to be in contact with the outside, and selectively communicates with the suction hole 22a and the open hole 22b of the movable valve 22 while the hollow shaft 7 makes one rotation. A valve 23 having a communication hole 23a that is always in communication with the shaft 7 is provided on the side plate 6 of the feeder. By rotating the movable valve 22 by a predetermined angle, the suction timing of the tachos 4a, 5a is adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeder in a saddle stitching machine that performs a binding mode with a relatively small number of pages such as weekly magazines and catalogs, and more specifically, a valve opening / closing timing adjusting mechanism for adjusting the falling timing of a printed book. It is about.

[0002]

2. Description of the Related Art Generally, a saddle stitching machine comprises a plurality of feeders for dropping a part of a book into a predetermined position on a gathering chain, a wire stitching machine for sequentially binding the book together with a cover, and a stitcher. The top and bottom of the printed book and a three-way cutting machine that cuts and finishes the edge at once are connected. Of these, the feeder attaches the octopus (sucker mouth) to the opening drum when the book is folded with the sides opposite the back bag aligned, and the claws to the opening drum when the book is folded without the edges. As a result, it is possible to switch between the two types of printed books.

The feeder F shown in FIGS. 1 and 2 shows a case where a book s in the form of being folded with the side opposite to the back bag aligned is dropped onto the gathering chain 1.
The grippers 3a and 3b of the feeder drum 3 pull out the prints s one by one from a bundle of the prints s (not shown in FIG. 1) set on the pedestal 2, and the feeder drum 3 rotates to the back bag side. Is on the upper side, and the tip of the brush s is sucked by the soccer octopus 4a on the opening drum 4 and the soccer octopus 5a on the lap drum 5, and is dropped onto the gathering chain 1 in an open state. The suction timing of each of the tachos 4a and 5a needs to be changed when the size of the printing book s is changed or the rotation speed of the saddle stitcher is changed. 3 and that shown in FIG. 4 are used.

In this conventional valve opening / closing timing adjusting mechanism, a collar 11, a fixed valve 12, and a valve 13 fitted into the hollow shafts 7 of the opening drum 4 and the lap drum 5 protruding from the side plate 6 of the feeder F, respectively. ,
It is composed of a fixed plate 14 and a handle 15. Of these, the fixed valve 12 is provided with a suction hole 12a connected to a vacuum pump and an open hole 12b connected to the atmosphere. Further, the valve 13 has a suction hole 1 of the fixed valve 12.
A communication hole 13a that selectively communicates with 2a and the open hole 12b is formed toward the side surface, and the communication hole 13a always communicates with the hole 7a of the hollow shaft 7 regardless of the rotational position of the hollow shaft 7. A notch 13b for forming is formed in the shaft hole portion. The fixed valve 12 is fixed to the feeder side plate 6 by a pin 16 so as not to rotate together with the hollow shaft 7. Further, the fixing plate 14 is fixed to the hollow shaft 7 while being sandwiched between the handle 15 and the end surface of the hollow shaft 7 by screwing the handle 15 into the end portion of the hollow shaft 7, and the valve 13 is Spring 1 between fixed plate 14
7, the pin 13c rotates around the hollow shaft 7 together with the fixed plate 14 in a state where the pin 13c is in close contact with the fixed valve 12 at a constant pressure.

In the feeder F having the valve opening / closing timing adjusting mechanism having the above structure, the hollow shaft 7 rotates and the communication hole 13a of the valve 13 is the suction hole 12a of the fixed valve 12.
When communicating with the octopus 4a, 5 of the sucker, the hollow portion of the hollow shaft 7 becomes a vacuum through the notch 13b of the valve 13.
a is in a state of sucking the copy book. When the hollow shaft 7 further rotates, the communication between the communication hole 13a of the valve 13 and the suction hole 12a of the fixed valve 12 is cut off, and the communication hole 13 of the valve 13 is cut off.
a and the open hole 12b of the fixed valve 12 communicate with each other, and the hollow shaft 7
Since the hollow part of the is atmospheric pressure, soccer octopus 4a, 5
a is in the state of releasing the copybook.

The operation procedure for adjusting the suction timing of the tachos 4a and 5a by the valve opening / closing timing adjusting mechanism is as follows. That is, after stopping the saddle stitcher, first loosen the handle 15 to fix the fixing plate 14 and the valve 13.
To be freely rotatable with respect to the hollow shaft 7. Then, after rotating the fixing plate 14 and the valve 13 by an appropriate angle with respect to the hollow shaft 7, the handle 15 is tightened to fix the fixing plate 14
And the valve 13 is fixed to the hollow shaft 7. And
This operation is repeated until the desired timing is obtained.

[0007]

The valve opening / closing timing adjusting mechanism described in the prior art has a problem that the suction timing of a soccer octopus cannot be adjusted while the saddle stitch machine is operating. In addition, in order to make adjustments, the handle must be loosened and the valve must be turned by hand. In addition, there is no standard for adjustment, and the operator makes so-called “intuition” adjustments. Since it is necessary to repeat the work of adjusting, there is a problem that the adjusting work is not easy.

The present invention has been made in view of the above problems, and an object of the present invention is to open and close a valve capable of adjusting the suction timing of an octopus regardless of whether the saddle stitcher is operating or stopped. It is to provide a timing adjustment mechanism.

[0009]

In order to achieve the above object, a valve opening / closing timing adjusting mechanism of the present invention comprises a suction hole rotatably fitted in a hollow shaft of a drum and connected to a pump, and an open hole communicating with the atmosphere. And a suction valve and an opening hole of the movable valve, which is fitted and fixed to the hollow shaft so as to be positioned in contact with the outside of the movable valve and is rotated once while the hollow shaft rotates once. And a rotating means for moving the movable valve in the rotational direction, the valve having a communication hole communicating with the hollow shaft and always communicating with the hollow shaft.

Then, in order to automatically adjust the suction timing, a motor for rotating the movable valve, a means for detecting a rotational position of the movable valve, and a calculation for calculating a required rotation amount of the motor from the detected amount. Means and driving means for rotating the motor by the calculated value can be attached.

[0011]

In the valve opening / closing timing adjusting mechanism having the above structure, the movable valve is rotated by a predetermined angle when adjusting the suction timing.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 5 is a partially cutaway perspective view of a feeder having a valve opening / closing timing adjusting mechanism according to an embodiment of the present invention. FIG. 6 is a sectional view of the valve opening / closing timing mechanism.
Is also an exploded perspective view. In addition, in FIG. 5, the gathering chain passing under the feeder is omitted.

The entire structure of the feeder F is the same as the conventional one described above, and only the valve opening / closing timing adjusting mechanism is different. As shown in the drawing, the valve opening / closing timing adjusting mechanism includes a collar 21, a movable valve 22, and a collar 21, which are fitted into the hollow shafts 7 of the opening drum 4 and the lap drum 5 in a state of protruding from the side plate 6 of the feeder F.
It is composed of a valve 23, a fixing plate 24, and a handle 25. Of these, the movable valve 22 has a suction hole 2 connected to a vacuum pump, as can be seen by referring to FIG.
2a and an open hole 22b that connects to the atmosphere are provided.
In this embodiment, the suction hole 22a is formed in a U-shape, and the plug screw 22c is attached for convenience of processing. In addition, the valve 23 includes a movable valve 22.
Connecting hole 23a that selectively communicates with the suction hole 22a and the open hole 22b of the hollow shaft 7 is formed.
With respect to any rotation position, the communication hole 23a has a hollow shaft 7
A notch 23b is formed in the shaft hole portion so as to always communicate with the hole 7a. Further, a worm wheel 26 is integrally provided around the movable valve 22, and the movable valve 22 can be rotated with respect to the feeder side plate 6 by a worm gear 27 driven by a motor. Also,
The fixing plate 24 is fixed to the hollow shaft 7 while being sandwiched between the handle 25 and the end face of the hollow shaft 7 by screwing the handle 25 into the end of the hollow shaft 7.
The spring 3 between the fixed plate 24 and the fixed plate 24 is rotated around the hollow shaft 7 together with the fixed plate 24 by the pin 23c in a state of being in close contact with the movable valve 22 at a constant pressure.

In the feeder F having the adjusting mechanism having the above structure, the hollow shaft 7 rotates and the communication hole 23a of the valve 23 is formed.
When is connected to the intake hole 22a of the movable valve 22, the hollow portion of the hollow shaft 7 becomes a vacuum through the notch 23b of the valve 23, so that the suckers octopus 4a and 5a are in a state of sucking the brush. When the hollow shaft 7 further rotates, the communication hole 23a of the valve 23 and the intake hole 22a of the movable valve 22 are cut off from each other, the communication hole 23a of the valve 23 and the release hole 22b of the movable valve 22 are connected to each other, and the hollow shaft 7 Since the hollow portion is at atmospheric pressure, the soccer octopus 4a, 5a is in a state of releasing the brush. This suction and release are selectively performed during one rotation of the hollow shaft 7.

The suction timing of the printed book is adjusted by the valve opening / closing timing adjusting mechanism by rotating the worm gear 27 by the motor 30 and changing the angle of the movable valve 22 with respect to the feeder side plate 6. That is, when the movable valve 22 is rotated by a predetermined angle, the angle at which the suction hole 22a and the opening hole 22b of the movable valve 22 communicate with the communication hole 23a of the valve 23 is changed, whereby the soccer octopus 4a, 5a is sucked and released. The angle of the hollow shaft 7 with respect to the feeder side plate 6 is changed to adjust the suction timing of the book. This adjustment operation is
Since the movable valve 22 is simply rotated as described above,
It can be performed regardless of whether the feeder F is operating or stopped.

In the above embodiment, the worm gear 27 is rotated by the motor 30.
It may be rotated by hand, and it can be adjusted manually even when the feeder is in operation or stopped.

In the above valve opening / closing timing adjusting mechanism having the motor 30 for rotating the movable valve 22, in order to automatically adjust the suction timing of the book, for example, a worm wheel 26 integrated with the movable valve 22 is used for origin detection. The sensor 31 is attached, and the motor rotation amount detecting sensor 32 is attached to the shaft of the motor 30 so that the rotational position of the movable valve 22 is detected.
Further, a computing means such as a personal computer for calculating the required rotation amount of the motor from the detected amount and a driving means for rotating the motor by the calculated value are provided. This allows the movable valve 22 to be rotated by a predetermined amount and the suction timing of the tachos 4a and 5a to be automatically adjusted when the size of the printed book changes or the rotation speed of the hollow shaft 7 changes.

[0019]

Since the present invention is configured as described above, it has the following effects.

In the valve opening / closing timing adjusting mechanism according to the first aspect of the present invention, since the suction timing of the octopus in the soccer can be adjusted by rotating the movable valve by a predetermined angle, the printing can be performed regardless of whether the feeder is running or stopped. The timing of book suction and release can be easily adjusted.

In the valve opening / closing timing adjusting mechanism according to the second aspect of the present invention, since the rotational position of the movable valve is detected and this positioning is automatically performed, the suction timing is automatically adjusted according to the change of the feeder or the printed book. Can be done on a regular basis.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a feeder including a conventional valve opening / closing timing adjusting mechanism.

FIG. 2 is an explanatory diagram of a state in which a book is dropped in a feeder.

3 is a cross-sectional view of the valve opening / closing timing mechanism in FIG.

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is a partially cutaway perspective view of a feeder to which a valve opening / closing timing adjusting mechanism according to an embodiment of the present invention is attached.

6 is a cross-sectional view of the valve opening / closing timing mechanism in FIG.

FIG. 7 is an exploded perspective view of the same.

FIG. 8 is a right perspective view of the movable valve.

[Explanation of symbols]

 4, 5 Drum 7 Hollow shaft 22 Movable valve 22a Suction hole 22b Open hole 23 Valve 23a Communication hole 30 Motor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Shibata 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (72) Inventor Masaaki Takahashi 1-1-chome, Ichigaya-Kaga, Shinjuku-ku, Tokyo No. 1 within Dai Nippon Printing Co., Ltd. (72) Inventor Takashi Akimichi 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside 1-1 Dai-Nippon Printing Co., Ltd. (72) Tadashi Yonezu 1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo No. 1-1, Dai Nippon Printing Co., Ltd.

Claims (2)

[Claims] 1. A movable valve having a suction hole rotatably fitted in a hollow shaft of a drum and connected to a pump, and an open hole communicating with the atmosphere; and a movable valve located outside the movable valve in a contact state. A valve that is fitted and fixed to a hollow shaft and that has a communication hole that selectively communicates with the suction hole and the open hole of the movable valve while the hollow shaft makes one rotation, and that also has a communication hole that always communicates with the hollow shaft; A valve opening / closing timing adjusting mechanism, comprising: a rotating means for moving the valve in a rotating direction. 2. The valve opening / closing timing adjusting mechanism according to claim 1, further comprising a motor for rotating the movable valve,
Valve opening / closing timing, characterized in that a means for detecting the rotational position of the movable valve, a calculating means for calculating the required rotation amount of the motor from the detected amount, and a driving means for rotating the motor by the calculated value are attached. Adjustment mechanism.