JPH05201611A - Perforating method and device for mesh-shape bookbinding - Google Patents

Abstract

PURPOSE:To improve the quality of blade and carry out an accurate process by applying mesh-shape perforation in advance to a position corresponding to a chopper folding line before cutting a web in a stretching status between tension rollers and cutting drums in the device of a rotary press. CONSTITUTION:A web 11 is sent to a mesh-shape perforating device 12 by tension rollers 10 and mesh-shape perforation 25 is processed in the running direction of the web 11. Then, the web is guided between a cutting drum 33 and a cut receiving drum 34 and cut to a prescribed length in the orthogonal direction to the mesh-shape perforation 25 so as to become a section 23. This section 23 is folded to a section 36 on a folding line position 22 by a folding device. Meantime, as the perforation 25 is processed in a laterally symmetric status on the folding line position 22, the perforation 25 of upper and lower pieces 37, 38 come to the just same position respectively. Accordingly, the generation of a defective section can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine for agile binding of a folding machine in a rotary printing press.

[0002]

2. Description of the Related Art A conventional sewing machine for agile bookbinding will be described with reference to FIGS. 6 to 12. The web 32 fed into a folder 31 is cut by a cutting cylinder 33 into a predetermined length and a cutting receiving cylinder 34. A belt 37 that is a conveyor belt device 40 composed of an upper belt 38 and a lower belt 39 that run in the running direction of the signature 37 by biting and folding through the thrust cylinder 35 and the bite cylinder 36 to form a signature 37. It is introduced between 38 and 39 and sent out to the chopper device 41 which performs chopper folding in the next step. While the signature 37 is conveyed by the conveyor belt device 40 and reaches the chopper device 41, the azilomic sewing machine 4
2 is provided so that a perforation line can be inserted in the traveling direction of the signature 37.

Explaining the azilomicin device 42 with reference to FIGS. 7 and 8, the azilomicin device 42 is located on the center line in the width direction of the signature 37 as shown in FIG.
Consists of an azillomi machine blade 43 provided on the upper surface side of the signature 37 and a sewing machine blade receiving roller 44 provided on the outer periphery with a receiving groove 49 on the lower surface side of the signature 37 with which the cutting edge of the ajiromicine blade 43 engages. There is.

The azimuth machine blade 43 is rotatably attached to one end of a key lever 46 rotatably supported by a fulcrum shaft 45 via a paper presser 47 having a diameter smaller than the outer diameter of the azimuth machine blade 43. A spring or air cylinder 48 whose outer circumference is attached to the other end of the lever 46.
(The spring in this example) is constantly pressed against the sewing machine blade receiving roller 44 with a constant pressing force. This pressing force can be adjusted as required by the spring or the air cylinder 48.

In the above construction, the signatures 37 sent out from the occlusal body 36 are conveyed by the belt conveying device 40 one after another at a constant interval, and the space between the azillomi sewing blade 43 and the sewing blade receiving roller 44 of the ajiromomishin device 42 is conveyed. When passing through, the signature 37 is processed with perforations for aziro binding.

This series of operations will be described with reference to FIG. 9. The signature 37 that is bitten and folded by the occlusal body 36 and sent out.
(FIG. 9 (a)) is sent to the aziromatic sewing machine device 42 by the conveyor belt device 40 (FIG. 9 (b)), and the sewing machine insertion processing is performed.
Perforations 50 are processed as shown in FIG.

The perforations 50 are parallel to the transport direction of the signature 37, and the chopper folding device 41 is continuously operated.
It is set to match the chopper crease by.

[0008]

As described above, in the case of the prior art, when the signatures 37 sent out from the occlusal body 36 at a constant interval enter the space between the azimuth sewing machine blade 43 and the sewing machine blade receiving roller 44, they are fulcrum points. Through a lever 46 that rotates about a shaft 45, an ajiromicine blade 43 compresses the spring 48 by the thickness of the signature 37 and moves upward, and when the signature 37 passes through, the signature 37 intermittently moves. Every time it passes, the vertical movement is repeated. Therefore, in the case of a signature 37 having a large thickness, the up-and-down movement of the ajiromomishin blade 43 becomes large and jumps up, and the blade edge of the ajiromomishin blade 43 is greatly separated from the surface of the sewing machine blade receiving roller 44, and from the receiving groove 49 as shown in FIG. It comes off and a gap S is formed between the cutting edge and the roller surface. Therefore, when the ajiromicine blade 43 is again engaged with the groove 49, the blade edge of the ajiromicine blade 43 does not normally enter the groove 49 of the ajiromicine blade roller 44, and as shown in FIG. It may come into contact with the outer peripheral surface and cause defects. In addition, the signature 37 conveyed to the asilomicin insertion device 42 has upper and lower belts 38, 3
It's just sandwiched in 9 so it's a signature 3
The position of 7 easily shifts to the left and right with respect to the running direction, and in addition,
Since the upper and lower belts 38 and 39 are double-moved, the signature 37 is not fed into the azilomicin machine inserting device 42 in a normal state at a right angle to the cutting edge of the azimuthic sewing machine blade 43, and the position of perforations is apt to shift.

[0009] In general, perforation is not formed in a signature 37 that is passed by a flexible belt at a high speed while the signature is not in a tensioned state, and since the signature is flexible, the precision is poor and the sharpness is not good. In the case of thin paper, when the perforations are inserted into the signature 37, the stiffness of the signature 37 is weak, and the perforation roller 44 is received by the aziro perforation blade 43 before the perforations are processed.
As a result of the signature 37 being pushed into the groove 49, the sharpness becomes poor and the position of the perforation also shifts. Also, in the case of a cardboard signature 37, since the folded upper half of the signature is lifted up, the perforation is bent from the position on the opposite side of the bite fold of the signature 37 to about 1/3 from the butt side to the butt side. Are processed (see FIG. 12). As described above, there is a problem that various troubles occur.

The present invention has been made in order to solve the above-mentioned problems of the prior art. The purpose of the present invention is to perform aziro perforation at an accurate position on a signature and to fold thin paper and thick paper. An object of the present invention is to provide a sewing machine insertion method and device for azilo bookbinding, which has excellent sharpness of the ajiromomishin blade and can be accurately processed.

[0011]

In order to achieve the above object, a method and a machine for perforating perforations for aziro bookbinding according to the present invention guide a web to a cutting cylinder to form signatures of a predetermined length, and then contact each other. A rotary press that guides between a folding cylinder and a bite that rotate in different directions, bites and folds the signature at a right angle to the running direction, then guides the signature to a chopper device and chopper folds it in the running direction. In the method for inserting the ajiro perforation of the folding machine, before the web in a tension state is cut between the pulling roll and the cutting cylinder, the ajiro sewing machine for aziro binding is preliminarily placed at a position corresponding to a chopper folding line by chopper folding in a subsequent step. A method for perforating azilomycin in a folding machine of a rotary printing press, which is characterized by keeping an eye on it.

Further, a frame provided between a pair of pulling rolls for drawing the web from the previous step and a cutting cylinder for cutting the web to a predetermined length, and a frame facing the web sufficiently wider than the width of the web, and one end of which is rotated by the frame. A pair of brackets that are movably mounted and are sufficiently wider than the web width and that face the inside of the facing frame; a mounting shaft that has both ends rotatably supported at the other ends of the pair of brackets; It is fixed to the mounting shaft and rotates in synchronization with the rotation of the mounting shaft.
A disk-shaped azilomy machine blade that is selectively movable in the axial direction is installed, and it is installed at approximately symmetrical positions on the left and right around the azilomy machine blade of the installation shaft, and it rotates in synchronization with the rotation of the installation shaft and is selected. And a paper pressing roll that is axially movable so that both ends of the paper pressing roll are rotatably supported by the pair of frames, and the paper pressing roll has a groove at the center thereof with which the tip of the ajiromicine blade engages. The receiving rolls, which rotate in opposite directions to each other by contacting each other, draw the web in a tensioned state between the pulling roll and the cutting cylinder and cooperate with the azimuth machine blade to insert aziromatic perforations into the web, and one end of the frame is rotatable. And the other end is rotatably attached to the bracket, and has a pressing device that always presses the azilomicin blade against the receiving roll. As an ajiromimine perforating device in a folding machine of a rotary printing machine, with the discoidal ajiromimine blade, the blades with the same pitch and the same tooth shape are provided on the circumferential portion at symmetrical positions with respect to one reference line passing through the center. 3. The azillomi machine perforating device for a folding machine of a rotary printing press according to claim 2, wherein the pitch circle diameter is a folding length when the web is cut.

[0013]

According to the sewing machine inserting device for aziro binding according to the present invention, the web fed into the folding machine is subjected to tension at an appropriate position and accurately, so that the web is continuously cut. The position of the perforation of the upper piece and the lower piece of the folded signature that is folded in two after the bite of the signature cut by the body is completed, and the position of the perforation of the chopper fold that follows is the same. Like

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the description, the same members as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted. Only newly changed members will be denoted by new numbers.

The sewing machine inserting device 12 for aziro bookbinding (hereinafter referred to as "azilomicine inserting device") pulls out the web 11 from the previous step, and cuts the web 11 into a predetermined length and the pulling roll 10 for introducing the web 11 into the folding machine 31. Cutting cylinder 33
This is a device in which the web 11 which is in a tension state between them is preliminarily provided with a perforated line at a position which becomes a chopper folding line in the chopper folding which is a post-process. More specifically, referring to FIGS. 1 and 2, the azilomy machine inserting device will be described. The webs 11 are rotatably attached to the frames 29 and 30 which are sufficiently wider than the width of the web 11 and face each other by a shaft 21. A pair of brackets 19 which are sufficiently wider than the width of the bracket 19 and face each other are provided, and the other end of the bracket 19 is provided with a mounting shaft 15 rotatably supported at both ends.

An aziromi machine blade 13 having a disk-shaped aziromi machine blade 13 fixed to the mounting shaft 15 with a bolt 27.
A smaller diameter sewing machine blade holder 28 is attached. Further, the sewing machine blade holder 28 is configured so that the mounting position can be changed in the axial direction by loosening the bolt 27. The mounting shaft 1
5, a paper pressing roll 16 is attached at a position substantially symmetrical with respect to the aziromi sewing machine blade 13 so that its mounting position can be changed in the axial direction. The paper pressing roll 16 is in contact with the receiving roll 14 whose both ends are rotatably supported by the frames 29 and 30.
Numeral 4 is rotating in different directions so that the web 11 is drawn between both rolls and cooperates with the azimuth machine blade 13 so that the web 11 has a perforation line.

Between the frames 29, 30 and the bracket 19, a pressing device such as an air cylinder 17 whose both ends are rotatably supported is attached, and the azimuth machine blade 1
3 is always pressed against the receiving roll 14. Of course, this pressing device is not limited to the air cylinder, and other pressing means such as a spring may be used.

Therefore, when the aziro perforation processing is not performed, the bracket 19 is rotated by the air cylinder 17 with the shaft 21 as a fulcrum to stop the pressing of the azimuth machine blade 13 and the paper pressing roll 16 to the receiving roll 14 and contact them. I try to escape from it.

A gear 20 is provided at one end of the mounting shaft 15, and when the gear 20 is rotated by a drive source (not shown), the gear 18 meshing with the gear 20 is rotated to rotate the gear 1.
The receiving roll 14 to which 8 is attached also rotates in a direction different from the rotation of the attaching shaft 15.

Further, as shown in FIG. 3, the ajiromomishin blade 13 has blades 13a, 13b ... 13n (n = n) having the same pitch P and the same tooth shape at symmetrical positions with respect to a reference line 26 passing through the center.
a), b, c ...) are provided, and when the ajiromicine blade 13 makes one rotation, when the signature 23 of the length L as shown in FIG. Bilaterally symmetrical perforations 25 are processed.

The above-mentioned structure is provided,
Next, this operation will be explained. The web 11 is sent to the aziromatic machine inserting device 12 by the pulling roll 10, and the aziromatic perforation 25 is processed in the traveling direction of the web 11 as shown in FIG. Subsequently, it is introduced between the cutting cylinder 33 and the cutting receiving cylinder 34, and cut into a signature 23 as shown in FIG. The signature 23 is folded into a signature 36 as shown in FIG. 4C at the folding line position 22 by the bite-folding device in the next step. At this time, since the aziromatic perforation 25 is symmetrically processed at the folding line position 22, the upper piece 37 and the lower piece 38 which are bite-folded respectively have the azilomatic perforation 25 exactly at the same position, that is, from the top. The signature 36 is formed by removing the perforations 25 from the bottom, so that the glue can permeate well from the top to the bottom during the aziro binding.

The signature 36 may be provided with a wrap amount e as shown in FIG. 5 (a).
When it is set in the range of mm and the lap amount e is required,
The sewing blade 13 shown in FIG. 2 can form the lap amount e on the signature 23 by providing the gap 24 corresponding to the lap amount e between the final tooth profiles 13n on both the left and right sides with the reference line 26 interposed therebetween.

Accordingly, the bolt 2 for fixing the sewing machine blade holder 28 to the mounting shaft 15 so that the reference line 26 of the sewing machine blade 13 coincides with the folding line position 22 in the signature 23 during operation.
It is necessary to loosen 7 and change the phase of the sewing blade 13 variously.

[0024]

As described above, according to the present invention,
Before the web is cut into signatures, the continuous web is tensioned while tension is applied to the web, so the perforations are smooth and the edge of the ajiro machine is sharp, making it suitable for thick paper. Since the perforations can be accurately processed without bending, there is an effect that it is possible to provide a sewing machine for agile binding that improves the efficiency of machine operation and prevents the occurrence of defective signatures.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an external view of an azilomicin blade.

FIG. 4 is a series of flow charts from azilomycin insertion processing to bite folding in the embodiment of the present invention.

FIG. 5 (a) is an explanatory view of a signature folded and bite after aziromyin perforation processing. (b) The figure is the figure which opened the signature of (a) figure.

FIG. 6 is a schematic explanatory view showing a conventional example.

FIG. 7 is a detailed view of the azilomicin insertion device of FIG.

FIG. 8 is a view on arrow B of FIG. 7.

FIG. 9 is a series of flow charts from bite folding to azilomycin insertion processing in a conventional example.

FIG. 10 is an explanation of the behavior of the azilomicin blade during the operation of the machine in the conventional example.

FIG. 11 is an explanatory view of a signature that has been subjected to aziromicine perforation processing in a conventional example.

Claims (3)

[Claims] 1. A web is guided to a cutting cylinder to form a signature having a predetermined length, and then the web is guided between a folding cylinder and a bite that rotate in different directions while facing each other, and the signature is bite at right angles to the running direction. After folding, the signature is guided to the chopper device and chopper folded in the running direction.In the method of inserting the ajiro perforation of the folding machine of the rotary printing machine, the tensioned web is cut between the tension roll and the cutting cylinder. A method for inserting perforations for a rotary printing press folding machine, wherein a perforated perforations for aziro binding are preliminarily placed at positions corresponding to the chopper fold lines by the chopper folding in the subsequent step before being processed. 2. A frame provided between a pair of pulling rolls for drawing the web from the previous step and a cutting cylinder for cutting the web into a predetermined length, and a frame facing the web sufficiently wide, and one end of which is turned to the frame. A pair of brackets that are movably mounted and are sufficiently wider than the web width and that face the inside of the facing frame; a mounting shaft that has both ends rotatably supported at the other ends of the pair of brackets; A disk-shaped azilomy machine blade that is fixed to the mounting shaft and rotates in synchronism with the rotation of the mounting shaft, and that can be selectively moved in the axial direction. Mounted on the paper holding roll, which rotates in synchronism with the rotation of the mounting shaft and can be selectively moved in the axial direction. It has a groove with which the tip of the azimuth machine blade engages and rotates in different directions in contact with the paper pressing roll, and draws in a web in a tension state between the pulling roll and the cutting cylinder and cooperates with the azilomic sewing blade. A receiving roll for inserting a perforated line on the web, and a pressing device having one end rotatably attached to the frame and the other end rotatably attached to the bracket, and a pressing device for always pressing the aziromatic perforation blade against the receiving roll. An ajiromicine perforating device for a folding machine of a rotary printing press, which is characterized by having. 3. The disk-shaped azilomy machine blade is provided with blades having the same pitch and tooth shape in the circumferential portion at symmetrical positions on the left and right with respect to one reference line passing through the center, and the circumference of the pitch circle diameter is the web. The azimuth machine perforation device for a folding machine of a rotary printing machine according to claim 2, wherein the folding length is a length when cut.