JPH0229073Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a folding machine of a paper roll press, in which the leading edge of a folding signature conveyed by a conveyor belt is brought into contact with the folding machine and stopped at the folding position. The present invention relates to a chopper paper applying device.

[Prior Art] A web rotary printing press is equipped with a folding machine that cuts or folds the printed web into a predetermined size. , a parallel folding device that cuts a web that has been format folded or cut in the paper width direction with a sliver in the length direction and folds it in the cross direction; It is equipped with a chiyotsupa device that folds it in half.

Among these, the chopper device stops the folded signature after parallel folding by bringing the leading edge of the signature conveyed by a conveyor belt into contact with the paper pad of the paper padding device, and then moves the thin chipper blade along the center line of the signature where it is stopped. 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, are discharged onto a paper discharge conveyor, and are conveyed and accumulated.

The paper support device in such a chipper apparatus is equipped with a plurality of paper supports whose cross sections are formed in a horizontally oblong rectangular shape and are arranged in parallel at intervals in a direction perpendicular to the direction in which signatures are conveyed. The folded signature is stopped by bringing its leading edge into contact with these paper guards.

[Problems to be solved by the invention] However, in such a conventional chopping paper stacking device, when a signature travels and hits a place where multiple paper stacks are arranged in parallel, the adjacent paper stacks The leading edge of the signature bites into the space between them due to running inertia, and both ends of this biting part are bent at the edges of the paper pad, making them easy to break.The rotating roller grips the edges of the paper pad. Since the paper is pulled in while being accelerated in the parallel direction, both ends of the biting part may be cut, resulting in paper waste, and this tendency has increased in recent years as printing speeds have increased.

[Means for Solving the Problems] In order to solve the above problems, in the present invention, both edges of the signature contacting surfaces of the plurality of paper pads are largely chamfered.

[Function] When the conveyed signature hits the paper rest and stops, the leading edge of the signature bites into the part where there is no paper rest due to running inertia, and as the chopper blade continues to descend, it is caught by the rotating roller. However, since the boundary between the cut-in part and the non-cut-in part of the leading edge of the signature corresponds to the chamfered part of the paper pad, the paper does not bend and paper breaks do not occur.

[Example] Figures 1 to 4 show an example of the chipping paper applying device for a folding machine according to the present invention, and Figure 1 is a plan view of the main part of the chipping device in which this is implemented. FIG. 1 is a front view from A in FIG. 1, FIG. 3 is a side view from B in FIG. 1, and FIG. 4 is a sectional view of the paper pad. In the figure, between the parallel folding part (not shown) of the folding machine and the end of the ejected paper, there is a four-strip conveyor belt 1 consisting of a pair of upper and lower belts running in the direction shown by arrow C in FIGS. 1 and 3. The conveyor belts 1A and 1B shown in FIG. 2 are cross sections of the conveyor belt 1 on its return path. And the parallel folded signature is
The conveyor belt 1, which is conveyed while being pinched by the upper and lower conveyor belts 1, releases the signature from the pinch by a chopper device or a sheet discharge device, which will be described later, and 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 the 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 in between, 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. is configured to be And the support bar 11
A plurality of paper pads 12 formed in the shape of a vertically long rectangular plate are screwed to the vertical surface of the paper pad 12 out of phase with the conveyor belt 1, and the lower end surface of the paper pads 12 is
It is positioned at the same height as the top surface of the plate 3. 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.

Furthermore, an arm 15 is fixed to a chamfered portion of an arm shaft 14 rotatably supported by a subframe parallel to the signature conveying direction, with a free end thereof facing above the base 4, At the free end of the arm 15, a tipper blade 16 formed of a thin plate in the shape of a horizontally long rectangle is attached to the presser plate 1 through 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 conveyed 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. Further, a pair of rollers and an impeller (not shown) are arranged below the gripping rollers 5 and 6, and the signatures held between the gripping rollers 5 and 6 are moved downward. 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.

In this apparatus, as shown in FIG.
b is largely chamfered, so that when the traveling signature 19 comes into contact with the paper pad 12 and stops, even if the edge of the signature 19 bites into a place where there is no paper pad 12, both edges of the paper pad 12 will be removed. By following the chamfered portions of 12a and 12b, it is configured so that no cuts can be made.

The operation of the chopper device configured as above will be explained. When not performing choppy folding, the swinging shaft 7 is rotated to rotate the arm 8 clockwise from the position shown in FIG. 3 by a predetermined angle.
The paper support 12 rises and separates from the plane of the conveyor belt 1. When the printing press is operated in this state, the signature 19 folded in parallel after printing is transferred to the upper and lower conveyor belts 1.
The paper is conveyed while being held between the paper pads 12, passed through the paper pad 12, and then discharged onto the paper discharge conveyor via the impeller.

When performing choppy folding, when the arm 8 is rotated to the position shown in FIG. 3 by rotating the pivot shaft 7, the lower surface of the paper pad 12 becomes at the same height as the upper surface of the plate 3. When the printing press is operated, the parallel folded signature 19 after printing is conveyed while being held between the upper and lower conveyor belts 1, and when the leading edge of the signature 19 touches the paper stopper 12, the traveling stops. Only the conveyor belt 1 continues to run. In this case, signature 1
9 travels at high speed and suddenly stops when it comes into contact with the paper pad 12, so the edge of the signature 19 may bite into a place where there is no paper pad 12, but as shown in FIG. Both end edges 12a, 12b of 12
is largely chamfered, and the cut-in part follows this chamfer, so there will be no cutting in this area. At the same time as the signature 19 stops, the chopping blade 16 descends toward the fold line position, pushes this fold line part into the gap in the mouthpiece 4, and causes it to be held in the gripping roller and folded in half. This signature is further pulled out downward by a pair of rollers provided below.
After being thrown between the blades of the impeller, the paper is conveyed by the rotation of the impeller and discharged onto the paper discharge conveyor.

[Effects of the invention] As is clear from the above explanation, according to the invention, in the folding machine's chipper paper abutment device, both edges of the signature abutment surface side of the paper abutment that abuts and stops the conveyed signature are made larger. Due to the chamfering, when a signature for chip folding runs at high speed and comes into contact with the paper pad and suddenly stops, the edge of the signature may dig into the area where there is no paper pad. Also, since both ends of this biting part form a gentle curve along the large chamfered part at both ends of the paper pad, there is no cutting from this part, and the amount of paper waste generated is reduced.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the tipper paper applying device of a folding machine according to the present invention, FIG. 1 is a plan view of the main part of the tipper device in which this is implemented, and FIG. FIG. 3 is a front view, FIG. 3 is a side view from B in FIG. 1, and FIG. 4 is a sectional view of the paper pad. 1... Conveyor belt, 12... Paper support, 12a,
12b...Both edges on the signature contact surface side, 19...Signature.

Claims (1)

[Scope of utility model registration request] 1. A chipper paper resting device for a folding machine, characterized in that both edges of a plurality of paper rests arranged in parallel in a direction perpendicular to the signature conveyance direction on the side of the signature contacting surface are largely chamfered.