JP2937581B2 - Valve opening / closing timing adjustment mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeder for a saddle stitching machine that performs a binding mode with a relatively small number of pages, such as a weekly magazine or a catalog. It is about.

[0002]

2. Description of the Related Art In general, a saddle stitching machine includes a plurality of feeders for dropping a printed book one by one to a predetermined position on a gathering chain, a wire binding machine for binding sequentially bound printed books together with a cover, and a binding machine. It has a configuration in which the top and bottom of a printed book and a three-way cutting machine that cuts and finishes the fore edge at a time are connected. Of these, the feeder attaches an octopus (sucker mouth) to the opening drum for a printed book folded in a state where the sides opposite the back bag are aligned, and attaches a claw to the opening drum for a printed book folded in an unaligned state. As a result, both types of printed book can be switched and used.

A feeder F shown in FIGS. 1 and 2 shows a case where a folded book s is dropped on a gathering chain 1 in a state in which the sides opposite to the back bag are aligned,
The grippers 3a, 3b of the feeder drum 3 pull out the prints s one by one from a bundle (not shown in FIG. 1) of the prints s set on the receiving table 2. With the soccer octopus 4a in the opening drum 4 and the soccer octopus 5a in the lap drum 5, the leading end of the book s is sucked and dropped onto the gathering chain 1 in an open state. It is necessary to change the suction timing of each of these octopuses 4a and 5a when the size of the printing book s changes or when the rotational speed of the saddle stitcher changes. 3 and 4 are used.

The conventional valve opening / closing timing adjusting mechanism includes a collar 11, a fixed valve 12, and a valve 13 which are inserted into respective hollow shafts 7 of the opening drum 4 and the wrap drum 5 projecting from the side plate 6 of the feeder F. ,
It is composed of a fixed plate 14 and a handle 15. Among them, 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 suction hole 1 of the fixed valve 12 is provided in the valve 13.
A communication hole 13a selectively communicating with the opening 2a and the opening hole 12b is formed toward the side surface, and the communication hole 13a always communicates with the hole 7a of the hollow shaft 7 at any rotational position with respect to the hollow shaft 7. 13b is formed in the shaft hole. The fixed valve 12 is fixed to the feeder side plate 6 by pins 16 so as not to rotate together with the hollow shaft 7. The fixing plate 14 is fixed to the hollow shaft 7 while being screwed between the handle 15 and the end surface of the hollow shaft 7 by screwing the handle 15 into the end of the hollow shaft 7. Spring 1 between fixed plate 14
7, the pin 13c rotates together with the fixed plate 14 around the hollow shaft 7 in a state of being 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 becomes the suction hole 12a of the fixed valve 12.
When communicating with the soccer octopus 4a, 5c, the hollow portion of the hollow shaft 7 is evacuated through the notch 13b of the valve 13.
a is in a state of sucking a printed 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 13a of the valve 13 is cut.
a and the open hole 12b of the fixed valve 12 communicate with each other.
Of the soccer octopus 4a, 5
a is in a state of releasing the printed book.

An operation procedure for adjusting the suction timing of the octopus 4a, 5a by the above-mentioned valve opening / closing timing adjusting mechanism is as follows. That is, after stopping the saddle stitcher, first, the handle 15 is loosened, and the fixing plate 14 and the valve 13 are stopped.
Can be freely rotated with respect to the hollow shaft 7. Next, after the fixing plate 14 and the valve 13 are rotated by an appropriate angle with respect to the hollow shaft 7, the handle 15 is tightened and the fixing plate 14
And the valve 13 is fixed to the hollow shaft 7. And
This operation is repeatedly performed until a 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 the soccer octopus cannot be adjusted while the saddle stitcher is operating. In addition, there is an operation to loosen the handle and turn the valve by hand to perform the adjustment.Moreover, there is no standard for adjustment, and the operator makes adjustments by so-called “intuition”. There is a problem that the adjustment operation is not easy because the operation of adjusting must be repeated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a valve opening / closing apparatus capable of adjusting the suction timing of an octopus while 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 according to 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. A movable valve having a movable valve and a movable valve, wherein the movable valve is selectively inserted into and fixed to the hollow shaft so as to be positioned in contact with the outside of the movable valve. And a rotating means for moving the movable valve in a rotating direction, the valve having a communication hole communicating with the hollow shaft and constantly communicating with the hollow shaft.

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 an operation for calculating a required rotation amount of the motor from the detected amount It is also possible to attach means and driving means for rotating the motor by the calculated value.

[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 be described below in detail with reference to the drawings.

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, FIG. 6 is a sectional view of the valve opening / closing timing mechanism, and FIG.
FIG. In FIG. 5, a gathering chain passing under the feeder is omitted.

The overall configuration of the feeder F is the same as that of the conventional one described above, except for the valve opening / closing timing adjusting mechanism. As shown in the figure, the valve opening / closing timing adjusting mechanism includes a collar 21, a movable valve 22, which is inserted into each hollow shaft 7 of the opening drum 4 and the wrap drum 5 protruding from the side plate 6 of the feeder F.
It comprises a valve 23, a fixed 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 clearly understood from FIG.
2a and an open hole 22b connected to the atmosphere are provided.
In the present embodiment, the suction hole 22a is formed in a U-shape, and a plug screw 22c is attached for convenience in processing. In addition, the valve 23 includes a movable valve 22.
A communication hole 23a that selectively communicates with the suction hole 22a and the open hole 22b of the hollow shaft 7 is formed toward the side surface.
Irrespective of the rotational position, the communication hole 23a
A notch 23b for constantly communicating with the hole 7a is formed in the shaft hole. Further, a worm wheel 26 is integrally provided around the movable valve 22, and the movable valve 22 is rotatable 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 screwed between the handle 25 and the end surface of the hollow shaft 7 by screwing the handle 25 into the end of the hollow shaft 7.
Numeral 3 is adapted to rotate around the hollow shaft 7 together with the fixed plate 24 by means of the pin 23c in a state of being in close contact with the movable valve 22 at a constant pressure by the spring 28 between the fixed plate 24 and the spring 28.

In the feeder F provided with 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 communicated with the intake hole 22a of the movable valve 22, the hollow portion of the hollow shaft 7 is evacuated through the notch 23b of the valve 23, so that the soccer octopus 4a, 5a is in a state of sucking a printing book. When the hollow shaft 7 further rotates, the communication between the communication hole 23a of the valve 23 and the intake hole 22a of the movable valve 22 is cut off, and the communication hole 23a of the valve 23 communicates with the release hole 22b of the movable valve 22. Since the hollow portion has the atmospheric pressure, the soccer octopus 4a, 5a is in a state of releasing the printed book. The suction and release are selectively performed during one rotation of the hollow shaft 7.

The adjustment of the suction timing of the book by the valve opening / closing timing adjusting mechanism is performed 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 changes, thereby sucking and releasing the octopus octopus 4a, 5a. At this time, the angle of the hollow shaft 7 with respect to the feeder side plate 6 is changed, and the suction timing of the book is adjusted. This adjustment operation
Since only the movable valve 22 is rotated as described above,
This 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.
The feeder may be rotated by hand, and can be adjusted manually even while the feeder is operating or stopped.

In the above-described valve opening / closing timing adjusting mechanism provided with the motor 30 for rotating the movable valve 22, in order to automatically adjust the suction timing of the printing book, for example, a worm wheel 26 integrated with the movable valve 22 is used for detecting the origin. A sensor 31 is attached, and a motor rotation amount detection sensor 32 is attached to a shaft of the motor 30 so that the rotation position of the movable valve 22 is detected by these.
Further, an arithmetic unit such as a personal computer for calculating a required rotation amount of the motor from the detected amount and a driving unit for rotating the motor by the calculated value are provided. Thus, when the size of the printing book changes or the rotation speed of the hollow shaft 7 changes, the movable valve 22 is rotated by a predetermined amount, and the suction timing of the octopus 4a, 5a can be automatically adjusted.

[0019]

Since the present invention is configured as described above, the following effects can be obtained.

In the valve opening / closing timing adjusting mechanism of the first aspect, the suction timing of the octopus in soccer can be adjusted by rotating the movable valve by a predetermined angle, so that the printing operation is performed regardless of whether the feeder is operating 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, the rotational position of the movable valve is detected and the positioning is automatically performed. Therefore, the suction timing is automatically adjusted in accordance with the change of the feeder or the printing book. Can be done

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram of a printing book drop situation in a feeder.

FIG. 3 is a sectional view of the valve opening / closing timing mechanism in FIG. 1;

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.

FIG. 6 is a sectional view of the valve opening / closing timing mechanism in FIG. 5;

FIG. 7 is an exploded perspective view.

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

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akihiko Shibata 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Masaaki Takahashi 1-1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. (72) Takashi Akimichi, Inventor 1-1 1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai-Nippon Printing Co., Ltd. (72) Tadashi Yonezu 1, Ichigaga-cho, Shinjuku-ku, Tokyo chome No. 1 Dai Nippon Printing Co., Ltd. in the (56) reference Patent Sho 63-267663 (JP, a) JP Akira 54-10021 (JP, a) (58 ) investigated the field (Int.Cl. ⁶ B42C 19/00 B42C 19/08 B42B 9/00-9/04 B65H 5/30

Claims (2)

(57) [Claims] 1. A movable valve having a suction hole rotatably inserted into a hollow shaft of a drum and connected to a pump, and an open hole communicating with the atmosphere, wherein said movable valve is located outside said movable valve in contact with said movable valve. A valve fitted and fixed to the hollow shaft and having a communication hole selectively communicating with the suction hole and the opening hole of the movable valve during one rotation of the hollow shaft and constantly communicating with the hollow shaft; And a rotating means for moving the valve in a rotating direction. 2. The valve opening / closing timing adjusting mechanism according to claim 1, wherein: a motor that rotates the movable valve;
Valve opening / closing timing comprising: means for detecting a rotational position of the movable valve; calculating means for calculating a required amount of rotation of the motor from the detected amount; and driving means for rotating the motor by the calculated value. Adjustment mechanism.