JPH052514Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a folding machine of a web-fed rotary printing press, in which the tips of the folding signatures conveyed by a conveyor belt are brought into contact with each other and stopped at the folding position. This paper pertains to a chipper paper application device that allows the

[Prior art] A web rotary printing press is equipped with a folding machine that cuts and folds the printed web into a predetermined size, and this folding machine is equipped with a former device that folds the web in half in the paper width direction before cutting. and a parallel folding device that cuts in the length direction a web that has been folded in a form or that has been cut in the paper width direction with a sliver, and folds the paper in the length direction;
The machine is equipped with a chopping device that further folds the parallel folded and conveyed signature in half in a direction perpendicular to the parallel folding. Among these, the chopper device stops the leading edge of the signature being conveyed by a conveyor belt against the paper stopper of the paper contact device after parallel folding, and the thin chipper blade is stopped at the center line of the signature. The folded signature is folded in half by lowering the cliff and catching it between a pair of rotating rollers, and the folded signature is placed between the blades of a rotating impeller. The sheets circulate together with the blades and are ejected onto a paper ejection conveyor, where they are conveyed and stacked.

[Problem that the invention attempts to solve]

However, in the chopper device of a conventional folding machine, if a signature that is being conveyed at a considerable speed hits the paper pad of the paper pad and suddenly stops, the strong impact caused by the contact may cause a cut in the signature. Paper waste may occur due to folding and rippling, and this tendency is especially true when the paper is made of thick paper, which has a large mass. Also, in front of the paper rest, there is a guide that guides the tip of the signature to the paper rest.
When the leading edge of a signature is lifted off the conveyor belt and conveyed, there is a problem in that the leading edge of the signature does not enter the opening of the guide and rides on the guide, resulting in paper waste.

[Means for solving problems]

In order to solve these problems, the present invention provides a guide with a tapered surface that guides the leading edge of the signature on the upstream side of each paper stop placed between the multiple rows of conveyor belts. A brush is provided continuously on the upstream side, the lower end of which slides into contact with the upper surface of the signature, and this brush is held so as to be adjustable up and down.

[Effect]

With this configuration, the signatures conveyed by the conveyor belt are pressed against the belt surface and decelerated by the brush slidingly touching the paper surface in front of the paper pad, while passing through the opening of the guide and lightly hitting the paper pad. It touches and comes to a gentle stop.

〔Example〕

1 to 5 show an embodiment of the tipper paper applying device according to the present invention, FIG. 1 is a plan view of the tipper device implementing this, and FIG. 2 is the A of FIG.
The front view in Figure 3 shows the paper applying device in the direction of arrow B in Figure 1.
It is a side view seen from the direction. In the figure, there is a space between the parallel folding part (not shown) of the folding machine and the end of the ejected paper.
Four conveyor belts 1 consisting of a pair of upper and lower belts running in the direction shown by arrow C in FIGS. This is a cross section on the return trip.
Then, the parallel folded signature is conveyed while being held between the upper and lower conveyor belts 1, and the conveyor belt 1, which releases the signature from the grip by the later-described chopper device or sheet discharge device, returns to the parallel folding device on the return path. .

In the middle of the signature conveyance path of the conveyor belt 1, a chopper device, generally designated by reference numeral 2, is provided. The chopper device 2 includes a subframe (not shown) supported by a chopper frame, and a plate 3 on which the conveyor belt 1 slides is horizontally supported on the subframe. In the rectangular hole formed in the center of the plate 3,
A pair of mouthpieces 4 are screwed together, and a groove is formed between the left and right mouthpieces 4 through which a chopper blade 16, which will be described later can be raised and lowered, passes through. Further, below the mouthpiece 4, a pair of gripping rollers 5 and 6, which rotate in the directions shown by arrows in the figure, are arranged with a gap therebetween that allows the chopper blade 16 to pass therethrough.

3 (not shown in FIGS. 1 and 2) are swing supports supported at the front end of the chopper device 2 perpendicular to the signature conveying direction. a shaft, an arm located obliquely above the front end of the base 4 and fixed to the center of the swinging support shaft 7;
A projecting piece 10, which is a paper support shaft that is fixed through the free end of the arm 8 and parallel to the swing support shaft 7, has an inverted L cross section.
A support bar 11 formed in a letter shape supports the paper support shaft 9.
It is pivoted at the center so that it can rotate horizontally in parallel with the main body. By rotating the swinging support shaft 7, the arm 8 swings, and the paper support shaft 9 and the support bar 11 move up and down together, and the paper support shaft 9 and the support bar 11 move up and down together. By operating the screw mechanism provided between them, the support bar 11 rotates in the horizontal direction around the pivot point, and the parallelism between the paper contact surface and the leading edge of the conveyed signature, which will be described later, is finely adjusted. configured to be adjusted. And support bar 1
1, a plurality of paper pads 12 formed in the shape of a vertically long rectangular plate are screwed to the top and bottom of the paper pads 12 out of phase with the conveyor belt 1. It is positioned so that it is approximately at the same height as the facing surface. Reference numeral 13 denotes a guide which is bolted to the paper stopper 12 and has a tapered surface at the lower end, and the leading edge of the conveyed signature enters from the opening side of this tapered surface, is guided to the paper stopper 12, and is brought into contact with the paper stopper 12. It is configured so that it stops when it comes into contact with it.

Further, an arm 15 is fixed to a chamfered portion of an arm shaft 14 rotatably supported by a subframe in parallel with the signature conveying direction, with its free end facing above the base 4. At the free end of this arm 15, a chopper blade 16 formed of a thin plate in the shape of a horizontally long rectangle is attached to the presser plate 1 via a bar 17.
It is fixed with 8 bolts. The arm shaft 14 is drivingly connected to the driving side via a crank mechanism (not shown), and by driving this from the driving side, the arm 15 is moved to the position shown by the chain line in FIG. It is configured to swing between the position where the gripping roller 5 and the gripping roller 5 and the gap between the gripping rollers 5 and 6 are inserted. That is,
When the leading edge of the signature, which has been conveyed while being clamped by the upper and lower conveyor belts 1, comes into contact with the paper stopper 12 and stops, the chopper blade 16 descends toward the center line of the signature, folding the signature in half. It is configured to be held between both holding rollers 5 and 6 through a gap in the cap 4. Furthermore, a pair of rollers and an impeller (not shown) are disposed below the gripping rollers 5 and 6, and a signature gripped between the gripping rollers 5 and 6 is placed under the gripping rollers 5 and 6. The signature is drawn downward by a pair of rollers and placed between the blades of an impeller, and the rotation of the impeller transports the signature and discharges it onto a paper discharge conveyor. In addition, when the tipper device is not used, the arm 8 is swung to raise the paper pad 12, and the movement of the tipper blade 16 is stopped.
The conveyor signature is configured to pass through the chopper device without being stopped.

Further, the paper abutment device of this chopper apparatus is provided with a paper presser that presses down and brakes the signature just before it comes into contact with the paper abutment 12. That is, on the support bar 11 that supports the paper pad 12, a plurality of adjusting screw shafts 20 with knobs 19 are rotatably supported and erected at predetermined intervals, and these adjusting screw shafts 20 includes a bar 2 formed in a rectangular shape.
The plurality of screw holes of 1 are screwed together, and the knob 1
By gripping the bar 9 and rotating each adjusting screw shaft 20, the height of the bar 21 can be adjusted locally. 22 is each adjustment screw shaft 20
This is a cylindrical nut with a knob that is screwed onto the adjustment screw shaft 20 and fixes it after adjusting by rotating the adjustment screw shaft 20. A plurality of L-shaped brush stands 23 are screwed to the bar 21 in correspondence with the respective paper pads 12, and each brush stand 23 has a plurality of thin plastic wires planted therein. A brush 24 formed by this is provided with the tip of a thin wire in sliding contact with the surface of the conveyed signature immediately before it is stopped. That is, as shown in FIG. 3, the lower end of the brush 24 is provided upstream of the guide 13 at a position where it slides against the upper surface of the signature. By doing this, the leading edge of the signature conveyed by the conveyor belt 1 is pressed by the brush 24 just before it comes into contact with the paper pad 12, and its running is braked, so that the impact caused by the contact with the paper pad 12 is alleviated. Note that the pressing force of the brush 24 against the signature is adjusted by rotating the adjusting screw shaft 20.

The operation of the chopper device constructed as above will now be described. When chopper folding is not to be performed, the swing support shaft 7 is rotated to rotate the arm 8 clockwise from the position shown in FIG.
The paper stopper 12 and the brush 24 rise and move away from the plane of the conveyor belt. When the printing press is operated in this state, the signature that has been printed and folded parallel is conveyed while being held between the upper and lower conveyor belts 1.
The paper continues to be transported through the impeller and then discharged onto a paper discharge conveyor.

When performing chip folding, when the arm 8 is rotated to the position shown in FIG. As the height increases, the brush 24
The bottom edge of will also be at the same height. When the printing press is operated, the parallel folded signatures after printing are conveyed while being held between the upper and lower conveyor belts 1, and when the tip of the signature touches the paper stopper 12, the traveling stops and the conveyor belts Only 1 continues running. When stopping this signature, since a brush 24 is provided, the tip of the signature that has reached just before the paper stopper 12 is pressed by this brush 24, braked, and decelerated.
The tapered portion of the guide 13 gently contacts the paper pad 12 and stops. At the same time, the tipper blade 16 descends to the folding line position, pushes this folding line part into the gap in the cap 4, holds it in the gripping rollers 5 and 6, and folds it in half. This signature is further pulled out downward by a pair of rollers installed below, thrown between the blades of an impeller, and then conveyed by the rotation of the impeller and discharged onto a paper discharge conveyor. Ru.

When the thickness of the signature changes, the cylindrical nut 22 is loosened and the adjusting screw shaft 20 is rotated, and the brush 24 moves up and down to adjust the contact pressure to the signature. Able to meet specifications.

FIGS. 4 and 5 are side views of the vicinity of the brush shown in correspondence with FIG. 3 as other embodiments of the present invention, in which the brush 24A shown in FIG.
The brush stand 23 for use is the same as that shown in FIG. 3, but the fine lines of the brushes 24A planted on the brush stand 23 are linear and are formed to be longer as they are closer to the paper pad 12. By doing this, the leading end of the traveling signature is gradually braked strongly from the entrance of the brush 24A and enters the guide 13. Further, in the case shown in FIG. 5, the brush stand 23A is formed long in the front and back, and many thin lines of brushes 24B are planted in the brush stand 23A in the front and back direction.
This brush 24B is also designated by the reference numeral 24 in FIG.
B is attached to show it installed.
Various brushes 24, 24A, 24B as described above
The optimum one can be selected and installed according to the paper thickness of the signature and the installation position in the width direction of the machine.

[Effect of idea]

As is clear from the above description, according to the present invention, a guide having a tapered surface that guides the leading edge of the signature is provided on the upstream side of each paper sheet placed between the plurality of conveyor belts. By providing a continuous brush on the upstream side, the lower end of which slides against the top surface of the signature, the signatures being conveyed by the conveyor belt are pressed against the conveyor belt by the brush whose leading edge comes into sliding contact with the paper surface before the paper stopper. Since the paper is decelerated, it heads toward the paper rest, and then it gently contacts the paper rest and stops, so that the edges of the signatures are not cut due to the impact, and the amount of waste paper is reduced. In addition, even during high-speed operation, the front end of the signature does not float up in front of the paper guide because it is held down by the brush, and it is possible to prevent paper waste from riding on the guide. Furthermore, since each of the brushes mentioned above is held so that it can be adjusted up and down, the contact pressure can be adjusted in response to subtle changes due to differences in paper thickness, paper quality, or folding method. This allows for accurate braking.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the chipping paper applying device of a folding machine according to the present invention, FIG. 1 is a plan view of the chipping device implementing this, and FIG.
3 is a side view of the paper applying device seen from the direction of arrow B in FIG. 1, and FIGS. 4 and 5 are side views near the brush showing other embodiments of the present invention, respectively. It is a diagram. 1... Conveyor belt, 12... Paper support, 13...
Guide, 23, 23A... Brush stand, 24, 24
A, 24B... Brush.

Claims (1)

[Scope of utility model registration request] In a chipper paper applying device for a folding machine, which is provided with a plurality of paper pads 12 disposed between a plurality of rows of conveyor belts 1 and 1 and which abut and stop the signatures to be folded by the chippers, each of the paper pads 12 is A guide 13 having a tapered surface that guides the leading edge of the signature toward the upstream side of conveyance.
A chipper paper stopper for a folding machine characterized in that a brush 24 is provided continuously on the upstream side of the guide 13 and whose lower end slides in sliding contact with the upper surface of the signature, and the brush 24 is held so as to be adjustable up and down. Device.