JPH0784110B2 - Bookbinding machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for automatically replenishing signatures on a signature supply table in a bookbinding machine, and in particular, the signatures are arranged in tandem. The present invention relates to a signature supply device for a signature supply table in a collating machine of a supply type.

(Prior Art) A signature supply table of a type in which signatures are vertically stacked on a signature supply table in a bookbinding machine is one in which the backs of the signatures are aligned and placed on the supply table. However, the back side is easily bent, and it takes a lot of skill to load a large number of signatures. If the supply table runs out of signatures during collation, a predetermined number of sheets will be immediately replenished. Frequent supply is also frequent. for that reason,
Various automatic replenishing devices have been developed, but in the case of replenishing devices of the type that replenishes the supply bases in tandem, in most cases replenishment to the supply pedestals in tandem with no gap between the signatures However, it is difficult to correct the posture of a signature that is bent and conveyed during conveyance, and the signature is replenished to the supply table in a bent state.

(Object of the Invention) It is an object of the present invention to automatically supply a predetermined amount of signatures to a bookbinding signature supply table of a column-stacking type in a correct posture without bending.

(Structure of the Invention) The present invention is a bookbinding machine equipped with a device for automatically replenishing a signature on a signature supply table of the bookbinding machine. A horizontal transport replenishment table that holds and transports intermittently, and a direction changing unit that changes the direction of the signatures that are transported while holding a certain interval from horizontal to vertical,
A signature supply table for accumulating the direction-changed signatures in a column, and a pushing member that projects into and out of the column conveyance path of the signature supply table and that moves forward and backward, and pushes from the upstream direction of the column conveyance path. A bookbinding machine equipped with an automatic signature replenishing device, characterized in that it comprises a pressing member that pushes a signature that has protruded and entered in the member direction and has entered vertically from the transport table in the direction of the pushing member. is there.

The device of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of an embodiment of the device of the present invention. Horizontal transport table 7
A signature supply table 1 for stacking columns is provided at the downstream end of the conveyance of the above.
Reference numeral 11 is a conversion unit for vertically converting the horizontal transport signature.
The signatures that have been vertically converted are sequentially stacked in a column on the supply table 1. The feeding table 12 is provided with a pushing member 12 that is inserted into the conveying path from above the accumulating conveying path and moves forward and backward in the conveying direction.
A pressing member 14 that aligns and presses the signatures that are vertically inserted in the direction and sequentially fall from the transport table 7 vertically.
Equipped with. Reference numeral 3 is an upper cylinder that hangs a signature a on a gathering chain 6 for collating and conveying provided downstream of the supply table 1. The signature that is pulled out by the suction feeder 20 and clamped on the back side by the jaws of the upper cylinder 3,
By the open cylinder 4 and the gripper cylinder 5 which rotate in the opposite directions to each other, the open end of the signature is gripped and released, and the lower gathering chain 6
It is the one that is loaded above. The transport table 7 is provided with, for example, pushing claws 16 attached to an endless chain 17 at equal intervals and a signature a.
Can be conveyed while pushing the rear end, and one pair of pressing claws 16 are provided in the direction orthogonal to the conveying direction. On the upper side of the transport table 7, a transport guide 18 may be provided in parallel with the table while keeping a certain distance. Further, it is possible to eject air from the upper surface of the transport table 7 to make the sliding of the table 7 and the transport paper signature a good.

Next, the delivery of the signatures to the transport table 7 in one embodiment will be described. In FIG. 1, the signatures a ″ in a row-stacked state are stacked on an elevating table such as a fork 9 and sequentially raised, and the suction feeder 8 is used. The signatures are pulled out one by one from the upper side, and are fed onto the transport table 7 by the feed rollers 10 facing each other.In this case, the signatures are fed by the feeder 8 and the roller 10 and the operation of the pressing claw 16 is performed. It is necessary to set the timing properly so that the rear end of the signature is fed so that it is fed by the pushing claw 16. The fork 9 attached to the endless chain 21 and pivotally supported by the bracket 23 that moves up and down is At the top stop point where all of the signatures are fed from the lifting fork 9 and finished, the rotary air cylinder reverses 90 ° through the fulcrum 24 and is stored and descends by the operation of the chain 21, When the point 24 reaches the height of the loading platform 25, the lowering operation is stopped, and then the fork 9 is inverted by 90 ° and lifted by the operation of the rotary air cylinder, and a large amount is preliminarily stacked on the loading platform 25 and prepared. 2 is a plan view of an embodiment of the device of the present invention, in which the device is set in contact with the lower side of the horizontal stacking signature and starts to rise again. As another embodiment, the delivery of the signatures onto the transport table 7 does not have to be the row stacking signature a ″, and for example, as shown in FIG. It is possible to prepare the tandem stacking signature a ″ and send it between the conveyor belts 27 and 28 at a predetermined interval by the suction belt 26 and send it out onto the horizontal conveyor table 7. Is the pushing member 12, the pushing member 14, and the conveying table. The pusher pawl 16 Le 7, can be interlocked each gear, the chain or the like.

FIG. 4 is an explanatory view of the operation sequence of replenishing a signature to the signature supply table of the device of the present invention. FIG. 4 (a) The pushing member 12 attached to the rod tip of the vertically operating air cylinder supported by the support shaft 12a plunges from above above the pushing position of the pushing member 14 (dotted line). And wait. R1 is a limit switch that detects inrush. Next, (b) In response to the signal of R1, the pushing member 12 performs a quick operation to move the pushing member 12 for one cycle of the collating operation, for example, the pushing member.
From the most advanced position of 14 (dotted line position), move forward in the transport direction by about the thickness of one signature, and stop at the position of limit switch R2. Then, in response to a signal from the counter or the limit switch R2, the pushing member 12 supplies the signatures in the conveyance direction at a speed commensurate with the reduction amount of the signatures a supplied from the feeder 20 to the upper cylinder 3 side for the collating operation. The carrying operation is started, and at the same time, the pushing claw 16 of the carrying table 7 starts the carrying operation of the signature a. Then, the signatures a sequentially sent out from the feeder 8 side at a predetermined interval are horizontally pushed on the transport table 7 by the pushing claws 16 driven by the rotating chain 17, and the transport attitude of the signature a is changed in the vertical direction. Converted vertically by part 11, (c)
The signature a falls vertically between the pushing member 12 and the support plate 13. Then, (d) the signature a is pushed toward the pushing member 12 side by the forward movement of the pressing member 14, the pressing member 14 is retracted to the position of the dotted line, and the pressed signature a is on both left and right widthwise sides thereof. Is held by the hold brush 1a. Then, the next signature a falls vertically, and immediately the pressing member 14 advances from the position indicated by the dotted line to align the signature a with the previous signature a and stack them in a column.
Then, (e) the signatures a that are sequentially conveyed are the pushing members 12
And the pressing member 14 are vertically aligned and accumulated to be replenished on the signature supply table 1. Then, the pushing member 12 has the support plate 19
At the time of approaching, the robot moves up by the operation of the air cylinder and moves to the outside of the conveying path of the supply table 1. R3 is the support plate 19
This is a limit switch for detecting the pushing member 12 approaching to. Immediately thereafter, the (f) quick operation causes the pushing member 12 to retreat and return in the left-right direction in the drawing, and stops slightly above the most advanced position of the pushing member 14 above the corresponding portion. R4 is a pressing member
It is a limit switch that detects the return of 14. And
In response to the signal from the limit switch R4 due to the return of the pressing member 14, the pushing member 12 descends due to the operation of the air cylinder, plunges slightly inward from the most advanced position (dotted line) of the pressing member 14, and by the detection operation of R1. In the transport direction, it moves forward to the position of R2 by a quick operation and stops. Then, in response to the signal of R2, it starts moving in the transport direction at a transport speed commensurate with the reduction amount due to the collate supply of the signatures. On the other hand, the endless chain which causes the pushing claw 16 of the transport table 7 to run stops rotating, the pushing claw 16 stops the pushing operation, and the supply of the signature a to the supply table 1 is stopped. During this series of replenishment operations, the feeder 20
The supply of signatures to the upper cylinder 3 by the above and the hanging and collating operation for the gathering chain 6 by the open cylinder 4 and the gripper cylinder 5 can be continuously performed. Then, the pushing member 12
Moves down into the conveying path of the supply table 1 by the operation of the air cylinder, returns to the state of FIG. 4 (a), and the pushing member 12 is changed to the signature supply table 1 in accordance with the cycle of the main body of the collating machine. The signature starts to move forward in the direction of transport.

(Operation of the Invention) The apparatus of the present invention is a bookbinding machine signature supply table 1 of a column-stacking type.
In addition, a predetermined amount of signatures a can be automatically replenished in parallel without stopping the collator main body. Since the operation is performed, even if each signature a to be conveyed is bent and conveyed obliquely, the conveyance posture of the signature a can be easily corrected to a correct posture by, for example, a guide.

(Effect of the Invention) The device of the present invention can automatically replenish the signatures in the correct posture with respect to the signature supply table of the bookbinding machine, and exhibits a remarkable effect in improving the efficiency of the bookbinding operation. To do.

[Brief description of drawings]

FIG. 1 is an overall side view of an embodiment of the present invention device using a replenishing signature conveying device, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is used as another embodiment of the present invention device. FIG. 4 is a side view of the replenishing signature conveying device, and FIG. 4 is an explanatory view of the replenishing operation sequence in one embodiment of the device of the present invention.

Claims (1)

[Claims] 1. A bookbinding machine equipped with a device for automatically replenishing the signatures on a signature supply table of the bookbinding machine, wherein the signatures are horizontally interrupted one by one with a certain interval between each other. Horizontal transport supply table that conveys automatically, a direction conversion unit that changes the direction of the signatures that are conveyed at a certain interval from horizontal to vertical, and a signature supply table that accumulates the direction-converted signatures in a column. And a pushing member that projects into and out of the column transport path of the signature supply table and that moves forward and backward, and projects vertically from the upstream side of the column transport path in the direction of the pushing member to vertically enter from the transport table. A binding bookbinding machine having an automatic signature replenishing device, comprising: a pressing member that presses the folded signature in the direction of the pushing member.