JP6237247B2 - Chopper folding device - Google Patents

Description

  The present invention relates to a chopper folding device provided in a folding machine connected to a web-fed rotary printing press such as an offset rotary press or a single folding machine.

  FIG. 1 is a block diagram showing an example of a folding machine. In general, a web-fed rotary printing press has a folding machine connected to the rear part thereof. In the folding machine, a web 1 is half-folded in a width direction by a former 2 and a signature cut to a predetermined size by a cutting cylinder 3 is folded. Folded between the barrel 4 and the rod barrel 5. At this time, the page is folded into 4 pages, and the front and back sides are 8 pages. The signature picked up by the saddle drum 5 is separated from the saddle drum before being rotated once, is moved up and down by the signature transport belt 11, proceeds in the horizontal direction, and is carried to the chopper folding device 10. The chopper folding device 10 includes a signature conveying belt 11, a chopper blade 12, a nip roller 13, an impeller 15, and the like.

  FIG. 2 is a perspective view showing the configuration of the chopper folding device, and FIG. 3 is a side view seen from the direction of the arrow 100 shown in FIG. The chopper folding device 10 has a plurality of signature conveying belts 11 that continuously run from left to right in the figure with a signature sandwiched on a plate 16, and a signature is located near the signature running end of the plate. There is a paper pad 17 for stopping the operation. Reference numeral 24 denotes a signature holding brush.

  A chopper arm 19 is attached to a chopper swing shaft 18 that is pivotally supported on the frame of the folding machine, and a thin chopper blade 12 is attached to an end portion of the chopper swing shaft 12 depending on the swing method. The chopper blade 12 is lowered in accordance with the arrival timing of the signature to the paper pad 17, the signature is tapped and folded at right angles to the paper pad 17, and passes through the opening 20 (FIG. 3) provided near the blade lowering of the plate. It is pushed downward by the upper nip roller 21 provided below, and further pushed by the lower nip roller 22 provided below the nip so as to be creased, and then pushed in the direction indicated by the arrow 27. After the signatures that have passed through the upper and lower nip rollers are guided by a guide belt and a guide (not shown), are partially fed into the lower impeller 15 (FIG. 1) and conveyed by the rotation of the impeller 15. It is sent out to the discharge conveyor 25.

JP-A-5-270731 JP-A-6-234463 Japanese Utility Model Publication No. 7-8364

  However, in such a conventional chopper folding device, it is difficult to perform an accurate right-angle folding as the machine speed increases. In other words, since it is difficult to accurately convey the signature from the folding cylinder in the previous process to the paper contact section of the signature so that there is no twist or delay, the signature does not fold at a right angle. If it hits too much, it may cause breakage or rebound, resulting in an increase in defective products and a decrease in productivity.

  As a method for braking (decelerating) the signature, a method using a signature pressing brush and a method using a steel guide are employed.

  FIG. 4 is a top view showing the case where the signature holding brush is used, and FIG. 4 shows a case where three signature holding brushes 24 are provided on the left and right sides of the chopper blade 12, respectively. Note that an arrow 28 indicates the conveyance direction of the signature.

  However, with the method using a signature holding brush, the braking force (deceleration force) is strong and the signature is distorted. On the other hand, with the method using a steel guide, the paper entry is stable, but the braking force is weak, so the signature is used as a paper pad. There was a problem that it hit too hard and it was torn or bounced.

  The reason why it is difficult to correctly apply the signature to the paper pad is that the signature is decelerated and applied to the paper pad 17 of the folding machine as described above. In addition, since the conveyance speed of the paper changes, there is a small adjustment range when adjusting the degree of deceleration so that both the distortion and tearing of the signature do not occur.

  Then, in view of the problem which concerns, this invention aims at providing the chopper folding apparatus which does not generate | occur | produce the distortion and tear of a signature.

The invention described in claim 1 of the present invention
A chopper folding device provided in a folding machine connected to a web-fed rotary printing machine or a single folding machine,
A paper pad, a chopper blade, and a signature reduction means,
The paper pad applies the tip of the conveyed signature to stop the signature and regulate its position .
The chopper blade is used to fold a signature whose conveyance is stopped in parallel with the conveyance direction.
The signature decelerating means is composed of a signature holding brush and a guide, and when the signature is applied to the paper pad, it contacts the signature being conveyed from above to decelerate the signature.
The chopper folding device is characterized in that the signature pressing brush and the guide are provided in a direction perpendicular to the conveyance direction of the signature around the chopper blade.

The invention according to claim 2 of the present invention is
About said chopper blade, wherein the signature pressing brush, before Kiga id is chopper folding device according to claim 1, characterized in that arranged in this order.

The invention according to claim 3 of the present invention is
The chopper folding device according to claim 1, wherein the signature pressing brush includes a mechanism that moves up and down in the vertical direction.

The invention according to claim 4 of the present invention is
The chopper folding device according to any one of claims 1 to 3, wherein the signature pressing brush includes a mechanism that moves in a horizontal direction.

The invention according to claim 5 of the present invention is
Before Kiga id is a chopper folding device according to claim 1, characterized in that it comprises a mechanism for lifting up and down to one of the 4.

The invention according to claim 6 of the present invention provides
Before Kiga id is a chopper folding device according to claim 1, characterized in that it comprises a mechanism for moving in a horizontal direction 5.

According to the chopper folding device of the first aspect of the present invention, the conveyance speed is reduced by the signature pressing brush and the guide, and the signature holding brush is centered on the chopper blade in a direction perpendicular to the conveyance direction of the signature. and since the guide is provided, the deceleration effect can be obtained, it is possible to easily enter the signature by or guide. As a result, it is possible to prevent the signature from being distorted or torn.

According to the chopper folding device according to claim 2 of the present invention, since around the chopper blade in the direction perpendicular to the conveying direction of the signature, the signature pressing brush, guide are provided in this order, most folding reduction effect is obtained by pressing by Ding swells central signature pressing brush, also it can be easily enters the signature by guide provided outside of the brush. As a result, it is possible to prevent the signature from being distorted or torn.

  According to the chopper folding device according to claim 3 of the present invention, the signature pressing brush is provided with a mechanism that moves up and down in the vertical direction, so that the pressing degree of the signature can be adjusted even when the paper quality is changed. It becomes possible.

  According to the chopper folding device of the fourth aspect of the present invention, the signature pressing brush can be adjusted in the horizontal position according to the portion where the signature swells by including a mechanism that moves in the horizontal direction.

According to the chopper folding device according to claim 5 of the present invention, guide, by having a mechanism for lifting up and down direction, as can be readily enters the signatures even if the paper quality is changed The height can be adjusted.

According to the chopper folding device according to claim 6 of the present invention, it guides the horizontal as can easily enter the signature even if the paper quality is changed by having a mechanism for moving in a horizontal direction The position can be adjusted.

The block diagram which shows an example of a folding machine. The perspective view which shows the structure of the conventional chopper folding apparatus. The side view of the conventional chopper folding device. The top view which shows the chopper folding apparatus using the conventional signature pressing brush. The figure which shows an example of the folding machine with which the chopper folding apparatus of this invention is applied. The figure which shows the structure of the chopper folding apparatus of this invention. The figure which shows the top view of the signature deceleration means which concerns on this invention. The figure which shows the structure of the chopper folding apparatus of this invention different from FIG. The figure which shows the case where two signature pressing brushes according to the present invention and two steel guides are provided.

  An embodiment of a chopper folding device of the present invention will be described with reference to the drawings.

  FIG. 5 is a view showing an example of a folding machine to which the chopper folding device of the present invention is applied, and a conventionally used folding machine can be used. The folding machine shown in FIG. 5 folds a former 2 that folds a wrapping paper (web) 1 in the width direction, a cutting cylinder 3 that cuts the wrapping paper 1 to a specified dimension, and a signature that is cut to a predetermined dimension by the cutting cylinder 3. Fold between the barrel 4 and the barrel 5 and leave the signature held by the barrel 5 away from the barrel before making a full turn. Carry to device 30.

  FIG. 6 is a diagram showing the configuration of the chopper folding device 30 of the present invention. The chopper folding device 30 of the present invention includes a paper pad 37, a chopper blade 32, and a signature reduction means 33. The paper pad 37 stops the conveyance by hitting the tip of the signature conveyed by the plurality of signature conveyance belts 11 that continuously run. The chopper blade 32 folds a signature whose conveyance is stopped in parallel with the conveyance direction. The signature decelerating means 33 is composed of a signature holding brush and a steel guide (not shown), and decelerates the signature by contacting the signature being conveyed when the signature is applied to the paper pad 37.

  FIG. 7 shows a top view of the signature deceleration means 33. The signature decelerating means 33 includes a signature holding brush 34 and a steel guide 35. When the signature is applied to the paper pad 37, the signature belt 33 contacts the signature being conveyed in the direction indicated by the arrow 38 by the conveyance belt 11. And decelerate the signature.

  The signature holding brush 34 and the steel guide 35 are provided in this order in the direction orthogonal to the signature conveying direction 38 with the chopper blade 32 as the center. In this way, the central portion where the signature swells most can be pressed by the signature pressing brush 34, and as a result, a deceleration effect can be obtained, and the signature can be obtained by the steel guide 35 provided outside the signature pressing brush 34. Can be entered easily. As a result, it is possible to prevent the signature from being distorted or torn.

  FIG. 7 shows an example in which two signature pressing brushes 34 and four steel guides 35 are provided. However, the present invention is not limited to this. For example, as shown in FIG. Two steel guides 35 may be provided, and the number of each may be selected as appropriate. For example, FIG. 9 is a diagram showing a case where two signature holding brushes 34 and two steel guides 35 are provided.

  The signature holding brush 34 includes a mechanism that moves up and down (not shown) and a mechanism that moves in the horizontal direction, and adjusts the pressing degree of the signature by a mechanism that moves up and down even when the paper quality changes. In addition, the horizontal position can be adjusted by a mechanism that moves in the horizontal direction according to the portion where the signature swells.

  The steel guide is provided with a mechanism that moves up and down in the vertical direction and a mechanism that moves in the horizontal direction (not shown). The steel guide can be adjusted in height and level so that the signature can be easily entered even when the paper quality changes. Position adjustment can be performed.

  As described above, according to the chopper folding device according to the present invention, the adjustment range when adjusting the degree of deceleration of the signature can be increased, and the distortion and tearing of the signature can be prevented.

1 ... Wrapping paper (web)
DESCRIPTION OF SYMBOLS 2 ... Former 3 ... Cutting cylinder 4 ... Folding cylinder 5 ... Cone cylinder 10 ... Chopper folding device 11 ... Signature conveyance belt 12 ... Chopper blade 13 ... Nip roller 15 ... Impeller 16 ... Plate 17 ... Paper pad 18 ... Chopper swing shaft 19 ... Chopper arm 20 ... Opening 21 provided in the vicinity of blade lowering ... Upper nip roller 22 ... lower nip roller 24 ... signature holding brush 25 ... discharge conveyor 27 ... direction in which the signature is pushed out 28 ... direction in which the signature is conveyed 30 ... chopper folding device 32 of the present invention ..Chopper blade 33 ... Signature deceleration means 34 ... Folder presser brush 35 ... Steel guide 37 ... Paper pad 38 ... Folding direction 100 ... Direction of viewing FIG.

Claims (6)

A chopper folding device provided in a folding machine connected to a web-fed rotary printing machine or a single folding machine,
A paper pad, a chopper blade, and a signature reduction means,
The paper pad applies the tip of the conveyed signature to stop the signature and regulate its position .
The chopper blade is used to fold a signature whose conveyance is stopped in parallel with the conveyance direction.
The signature decelerating means is composed of a signature holding brush and a guide, and when the signature is applied to the paper pad, it contacts the signature being conveyed from above to decelerate the signature.
A chopper folding device, wherein the signature holding brush and the guide are provided in a direction orthogonal to a signature conveying direction centering on a chopper blade. Wherein around the chopper blade, the signature pressing brush, before Kiga - id chopper folding device according to claim 1, characterized in that arranged in this order.   The chopper folding device according to claim 1, wherein the signature pressing brush includes a mechanism that moves up and down in the vertical direction.   The chopper folding device according to any one of claims 1 to 3, wherein the signature pressing brush includes a mechanism that moves in a horizontal direction. Before outs Id, chopper folding device according to any one of claims 1 to 4, characterized in that it comprises a mechanism for lifting up and down direction. Before outs Id, chopper folding device according to any of claims 1, characterized in that it comprises a mechanism for moving in a horizontal direction 5.

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