JPS6137520Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device that continuously performs decorative cutting of the edges of folded books such as folded sheets or booklets, and in particular, double-sided folded sheets for saddle stitching, which are folded and discharged from a rotary press folding machine. The purpose of this machine is to perform edge trimming of special types of signatures, such as rolled signatures, at the same time as rotary press folding, and the simplified machine operation allows the cutting process to be performed with high precision and efficiency. .

To explain the present invention according to the drawings, as shown in FIG. The crank bar 12 is attached to a sliding holder 7 that moves up and down guided by each guide 10.
An eccentric shaft 1 of a convex cam 13 whose one end is connected to the sliding holder 7 via a shaft 11 and whose other end is attached to a drive shaft 30 that can be started or stopped by an electromagnetic clutch.
4, and comprises compressed air injection pipes 4, 4' opposed to each other at a distance on the front surfaces of the upper blade 5 and the lower blade 6, and a guide 2 for guiding the folded book; A roller 15 that moves along the circumferential surface of the cam 13 is attached to one end of an operating arm 19 that is pivotally supported on a fulcrum 20, a crank bar 16 is connected to the other end of the operating arm 19 via a shaft 18, and a stopper 21 is attached to the A folded book positioning section is attached and fixed to an opening/closing shaft 22 fixed to an arm 23 connected to the crank bar 16 by a shaft 24, and a steel ball 28 is mounted on the upper surface of a folded book conveying belt 25 provided in the direction from the cutting section to the positioning section. This is a folded book edge cutting device in which upper guide plates 27 are fitted with a protruding lower spherical surface so that they do not come off.

As shown in FIG. 2, the device of the present invention uses a convex cam 13 that is connected to an electromagnetic clutch to start and stop its rotation and performs intermittent rotation, and a crank bar 12 that is connected to an eccentric shaft 14 is used to cut the upper cutting blade. 5 is moved up and down, while the rotation of the cam 13 causes the roller 15 and the operating arm 19 to close or open the stopper 21. FIG. 2A shows the standby state, and the shaft 14
1/4 turn from the upper end point, the protrusion a pushes up the roller 15 and pushes up the crank bar 16, so the stopper 21 is closed by the arm 23 and shaft 22 in FIG. 1, and at the same time, the limit switch 17 in FIG. is pushed down by the rollers 15 to disengage the electromagnetic clutch, the cam 13 stops, and the upper blade 5 connected to the crank bar 12 temporarily stops and waits. During this time, the folded book 3 passes from the supply guide 2 between the upper blade 5 and the lower blade 6 with the front end in the traveling direction as the folding side and the rear end as the edge side, and is conveyed by the conveyor belt 25 to the detection section of the phototube 29. pass through,
The folding side comes into contact with the stopper 21 in the closed state, but the time t from when the phototube 29 detects the folded book 3 to when it comes into contact with the stopper 21 is preset in a timer, and after the set time elapses, the electromagnetic clutch is engaged. Since the drive shaft 30 is configured to start the cam 13, the cam 13 moves the shaft 14 to the lower end point as shown in FIG. 2B.
The crank bar 12 descends, and the upper blade 5 cuts the edge portion of the folded book 3. Then, the roller 15 is pushed up by the notch b of the cam 13, and the crank bar 1
6 to release the stopper 21. The conveyor belt 25 is always in a conveying state due to the rotation of the rollers 26, and the folded book 3 is discharged forward when the stopper 21 is opened, and the next folded book 3 is then transported in the previous process by a rotary press folding machine or the like. The folded book is held between the folding rolls 1 and the press rolls 1' which create creases, passes under the guide 2, is sent between the upper blade 5 and the lower blade 6, and heads toward the stopper 21. In the meantime, as shown in FIG. 2C, the shaft 14 reaches the upper end point and returns to the state A in which the roller 15 is further pushed down, the stopper 21 is closed, the limit switch 17 stops the operation of the upper blade 5, and the The subsequent folded book 3 passes under the phototube 29 and comes into contact with the stopper 21, and in response to the signal from the phototube 29, the timer is activated and the electromagnetic clutch is engaged, which starts the rotation of the cam 13 and operates the upper blade 5 to release the folded book 3. Trim the edges of the paper.

Furthermore, as shown in FIG. 3, when the shaft 14 of the cam 13 reaches the lower end point during edge cutting, the edge cut pieces are blown off by air jet from the upper air pipe 4. In addition, in order to prevent the edge part from falling during cutting, from the time when the phototube 29 detects the folded book 3 to the time when the shaft 14 of the cam 13 reaches the lower end point, the lower air pipe 4 cuts the edge of the folded book onto the back side of the folded book. The folded book is cut by blowing air toward it and lifting the end of the folded book. Further, as shown in FIG. 1, on the upper surface of the folded book conveying belt 25 until it comes into contact with the stopper 21, a guide plate 27 is provided at a small interval to support a plurality of steel balls 28 so that they can rotate freely so as not to fall off. The folded book 3 is pressed against the belt 25 with gentle pressure by the load of the steel ball 28, or the steel ball is supported in a state where the steel ball is slightly in contact with the folded book or not in contact with the belt 25. This allows you to control the folded book from the top and prevent it from collapsing. Then, while adjusting the vertical distance between the guide plate 27 and the belt 25,
In addition, it is possible to adjust the pressing force of the steel balls 28 against the folded book.

According to the present invention, with a simple mechanism, it is possible to carry out continuous decorative trimming of the edges with high precision and efficiency, and it is effective for cutting not only the edges of signatures but also the edges of booklets, etc. It is also possible to perform edge trimming on signatures discharged from a rotary press folding machine that require edge trimming before saddle stitching, and can be installed alongside the rotary press folding machine to perform edge trimming at the same time. It exhibits extremely excellent practical value in terms of labor saving, cost reduction, and efficiency improvement in edge trimming after folding and decorative cutting during folding using an offset rotary press folding machine.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the present invention, FIG. 2 is an explanatory diagram of the operation of the present invention device, and FIG. 3 is an explanatory diagram of the injection air pipe in the present invention device. 1... Press roll, 2... Guide, 3... Folded book, 4... Air pipe, 5... Upper blade, 7... Lifting holder, 8... Holding plate, 9... Guide frame,
10...Guide, 12...Crank bar, 13...
...Cam, 16...Crank bar, 21...Stopper, 25...Transport belt, 28...Steel ball.

Claims (1)

[Claims for Utility Model Registration] 1. The upper blade 5 is attached to a holding plate 8, the fixed lower blade 6 is attached to guide frames 9 on both sides, and the holding plate 8 is guided by each guide 10 fixed to the frame 9. One end of the crank bar 12 is connected to the sliding fixture 7 via a shaft 11, and the other end is attached to a drive shaft 30 that can be controlled to start or stop using an electromagnetic clutch. A guide 2 that is connected to the eccentric shaft 14 of the convex cam 13 and that guides the compressed air injection pipes 4, 4' and the folded book, which are opposed to each other with a space between them, in front of the upper blade 5 and the lower blade 6.
A roller 15 that operates along the circumferential surface of the cam 13 is attached to one end of an actuating arm 19 that is pivoted on a fulcrum 20, and a crank bar 16 is attached to the other end of the actuating arm 19. 18
and a folded book positioning section attached and fixed to the opening/closing shaft 22 which is fixed to the arm 23 which connects the stopper 21 to the crank bar 16 by a shaft 24, and the folded book positioning section provided in the direction from the cutting section to the positioning section. This edge cutting device for folded books includes an upper guide plate 27 which is fitted onto the upper surface of a conveyor belt 25 with a small distance therebetween, and which is fitted so that the lower side of a steel ball 28 protrudes so as not to come off. 2. A phototube 29 for detecting the passing of the folded book 3 and a timer that operates in response to a signal from the phototube 29 are provided, and the convex cam 13 rotates together with the drive shaft 30 that is started by an electromagnetic clutch connected by the operation of the timer. A folded book edge cutting device according to claim 1, wherein the shaft is stopped after each rotation by a signal from a limit switch 17 operated by the user, and is caused to rotate intermittently.