JPS63306162A - Folding machine of roll paper rotary printer - Google Patents

Abstract

PURPOSE:To improve a folding accuracy by placing both the machine barrel of a lateral machine device and the folding barrel of a paper folding part on the same side with respect to a conveyed web in a folding machine while placing the receiving barrel of the lateral machine device and the holding barrel of the paper folding part on the same side with respect to the conveyed web. CONSTITUTION:After printing, a web 3 is fed into a folding machine 4 and subjected to a slitter machining, etc., and, then, passes through a lateral machine device 5, where a perforation is given to the predetermined place of a folding line by means of the machine tool 11 of a machine barrel 6 and the machine tool receiver 16 of a machine barrel 7. After that, the web is cut off by means of a cutting barrel 19 and folded in half between an inserting knife 27 of a folding barrel 20 and the holding plate 31 of a holding barrel 21 and discharged. In this case, both the machine tool 11 and the inserting knife 27 are placed on the same side with respect to the conveyed web 3, the inserting knife 27 is pressed against the side on which burr is not formed on the perforation, and the side on which the burr of the perforation is generated comes to the ridge side of the folding. Thereby, a very favorable folding which is easy to fold can be obtained improving a folding accuracy leading to improvement in the quantity of printed matter.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a folding machine that is attached to a web rotary printing press and cuts a printed web into predetermined dimensions and folds the paper.

[Conventional technology]

In the folding machine of a web rotary printing press, after printing, the paper is dried and cooled, and then guided to the paper input section of the folding machine, where it is folded in half by a former and then cut in half by a syslitter, or the paper in the paper state is folded in half by a former. The paper is then guided to the origami side group, cut and origized to a predetermined size, and then discharged. The origami side group generally includes a cutting cylinder having a cutting blade, a folding cylinder having an insertion knife, and a gripping cylinder having a gripping plate. The web is fed between a folding cylinder and a gripping cylinder which are opposed to each other, and is folded in half by inserting the insertion knife into the opening of the gripping plate.

In such a folding machine, depending on the specifications of the printed matter, it may be required to cut out each folded page, so a horizontal perforation device is installed on the upstream side of the web conveyance side of the origami side group. It has been conventional practice to provide perforations parallel to the fold lines near the fold lines. This horizontal sewing machine is equipped with a sewing machine cylinder and a receiving cylinder that are arranged on both sides of the conveying web to sandwich it therebetween. [Problem to be solved by the invention] Conventionally, the horizontal perforation device in such a folding machine has been used to create perforations for cutting p as described above. In recent years, perforations have been made in advance at the locations where the fold lines are planned to be folded when the folding cylinder and gripper cylinder are used to fold the paper, making it easier and more accurate to make the origami. Sewing machine equipment has come into use. However, when folding the next fold after making perforations using a conventional horizontal perforation machine, it is not always possible to obtain a satisfactory fold, and an improvement has been desired.

[Means for solving problems]

In order to solve such problems, in the present invention, the perforation cylinder of the horizontal perforation machine device and the folding cylinder of the origami section in the folding machine are arranged on the same side with respect to the conveying web, and the receiving cylinder of the horizontal perforation machine and the folding cylinder of the origami section Place the gripper torso on the affected side with respect to the transport web.

[Effect]

After printing, the paper is placed in a folding machine, and the web passes through a slitter process and a horizontal perforation machine, where perforations are made at the intended fold line locations using the perforation blade on the perforation cylinder and the perforation blade receiver on the receiving cylinder. The paper is cut by the cutting cylinder, folded in half between the insertion knife of the folding cylinder and the gripping plate of the gripping cylinder, and then discharged. In this case, because the perforation blade and the insertion knife are on the same side with respect to the conveying web, the insertion knife is pressed against the side where the perforation cannot be changed, and the side where the change of the perforation occurs is the side of the crease. become.

〔Example〕

1 to 3 show an embodiment of the folding machine according to the present invention, FIG. 1 is a schematic configuration diagram thereof, and FIG. 2 is a horizontal, expanded sectional view of a sewing machine device, a folding cylinder, and a gripping cylinder. FIG. 3 is a side view of perforations and folds. In the figure, between the left and right folding machine frames 1, a pair of nipping rollers 2 that are in contact with each other are positioned below a former (not shown) and are mounted on a shaft. The web 3 is guided to the nipping row 22 while being fed into the folding machine 4. Below the nipping roller 2, a sewing machine g746 and a receiving cylinder T of the horizontal sewing machine 5, details of which are shown in FIG. It is rotating in the direction shown by the arrow in the figure. In the holder groove 8 extending in the axial direction on the circumferential surface of the sewing machine barrel 6,
A sewing machine blade stand 9 is fixed at both ends by bolts to the bottom surface of the holder groove 8, and a liner 10 whose thickness is selected depending on the plate thickness is inserted into this fixed part.

Reference numeral 11 is a companion sewing machine blade formed of a thin steel plate and having the same length as the perforation machine blade stand 9. The sharp ends of a large number of blades arranged in parallel in the longitudinal direction slightly protrude from the body circumferential surface to form the sewing machine blade stand. It is held in the groove 9 and fixed to the groove wall surface by pressure contact with a plurality of setscrews 12. 13 is a paper holder that fits into the sewing machine blade stand 9 with a dovetail groove and holds the sewing machine blade 11;
The sharp end of the sewing machine blade 11 slightly protrudes from the groove, and is configured to press the web 3 against a blade receiver 16, which will be described later. On the other hand, the receiving cylinder T is provided with a holder groove 14 over the entire length of the cylinder, which faces each other once per rotation of the side cylinder 6°7. A long holder 15 is fitted with both ends screwed to the bottom of the holder groove 14.
A long blade receiver 16 made of an elastic material such as urethane rubber is fitted and fixed inside the blade 5 . With this structure, when the web 3 is conveyed while being held between the surfaces of the side bodies 6 and 7, the web 3 is As shown in an enlarged view in FIG. 3 (1), a large number of perforation holes 17 are arranged in parallel in the paper width direction.
A perforation is formed, and a minute barb 91Ta is formed on the blade receiver 16 side. In addition, the blade receiver 16 has a concave groove 1 into which the sewing machine blade 11 and 917m are inserted.
8 has been formed.

Below the horizontal sewing machine device 5 configured as described above, there is a cutting cylinder 19 which has a diameter double that of the side cylinders 6 and 7 and which rotates in the direction of the arrow in the figure with their circumferential surfaces facing each other. An origami cylinder group 22 consisting of a folding cylinder 20 and a gripping cylinder 21 is arranged via a pair of nipping rollers 23, and the perforated web 3 is transferred to the cutting side 19 and the folding cylinder via the nipping roller 23. It is sent between 20 and 20. 2 in the circumferential direction of the outer periphery of the cutting side 19
A pair of cutting blades 24 extending in the axial direction are provided at the portions to be divided into equal parts.
A pair of blade receivers 26 equipped with adjacent needles 25 are arranged at positions that divide the outer circumference of the folding drum 20 into two equal parts in the circumferential direction. It is provided at a position opposite to 24.

By doing this, the next web 3 that is held and cut by the opposing cutting blade 24 and blade receiver 26 is cut by the following needle 2.
The cut end is held at 5 and conveyed while being attached to the circumferential surface of the folding drum 20. Furthermore, a pair of insertion knives 2T formed in the shape of a long plate are supported by a holder 28 on the outer circumferential portion of the folding drum 20 at positions that bisect the gap between the needles 25 into two in the circumferential direction. A pair of grip plate assemblies 29 are disposed on the outer periphery of the grip cylinder 21 at positions corresponding to the insertion knives 27 as the cylinder rotates. This grip plate assembly 29 includes a shaft 30 that reciprocates by a predetermined angle by a cam mechanism at the end of the body, a long plate-shaped grip plate 31 that is supported by this shaft 30 and opens and closes as the shaft rotates, and an insert knife. 27 and a gripping stand 32 into which the central portion is inserted and gripping the next web 3 between it and a gripping plate 31. A gripping plate 3 is provided on the web conveyance downstream side of the gripping cylinder 21.
A paper ejecting belt (not shown) is provided to capture and convey the signature 3B released from the grip of the paper sheet 1.

The operation of the folding machine configured as above will be explained.

After printing, the dried and cooled web 3 is fed into the folding machine 4, pulled out downward by a drag roller (not shown) and guided to the nipping roller 2, and then transferred to the perforation cylinder 6 and receiving cylinder T of the horizontal perforation device 5. It is sent between. By arranging the axes of both films 6 and 7 to be shifted to the right in FIG. A perforation hole 17 is formed in the web 3 by passing between the two membranes 6 and 7 and being pressed by a perforation blade 11 against an elastic blade receiver 16 . In this case, a minute barb 17m of the perforation hole 1T is formed on the surface of the web 3 on the receiving cylinder 7 side. The web 3 having perforated holes 17 is fed between the cutting side 19 and the folding cylinder 20 via the nipping roller 23, and is cut by the cutting blade 24 once every half rotation of both films 19 and 20. After cutting, the trailing portion of the cut portion is held by the needle 25. Further rotation of each side causes the f'Lfc web 3A held by the needle 25 to be wrapped around the folding drum 20, and when its center passes past the contact points of both membranes 20 and 21 as shown, the insert knife 2γ and the gripping plate 31 face each other, and after the gripping plate 31 is opened and the insertion knife 2T moves forward, the gripping plate 31 is closed, and the center portion of the web 3A is folded and gripped by the gripping plate 31.

After this, as the gripper cylinder 21 continues to rotate, the web 3A becomes a signature 3B (the preceding signature is shown in the figure) and is wrapped around the gripper cylinder 21, and released from the grip of the gripper plate 31. The paper is transported and ejected by the paper ejection belt.

Web 3A with the above-mentioned insertion knife 27 and gripping plate 31
When approaching, the ridge 517m of the perforation 17 faces the gripper plate 31 on the side of the gripper cylinder 21, so the signature 3B to be folded is turned as shown in FIG.
) 17m is placed on the mountain side of the fold, making it easy to fold and obtaining a good fold.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in a folding machine of a web rotary printing press, the perforation cylinder of the horizontal perforation device and the folding cylinder of the origami section are arranged on the same side with respect to the conveying web, and the horizontal perforation device By arranging the receiving cylinder and the gripper cylinder of the origami part on the same side with respect to the conveying web, minute burrs formed around the perforations made by the horizontal perforation machine will cause the origami part to When the paper passes through the paper, it is folded on the gripping plate side of the gripper cylinder, that is, on the mountain side of the crease, so it is easy to fold and an extremely good fold is obtained, improving folding accuracy and improving the quality of printed matter.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the folding machine of the web rotary printing press according to the present invention, Figure 1 is a schematic configuration diagram thereof, and Figure 2 is a development of the horizontal perforation device, folding cylinder, and gripper cylinder. The enlarged sectional view, FIG. 3 (&) is a side view of the perforation, and FIGS. 3-) are side views of the fold. 3.3A...web, 3B---signature, 4...
・Folding machine, 5...Horizontal sewing machine device, 6 φ...Sewing machine barrel, T order...Catching barrel, 11...Sewing machine blade, 16...
...Blade holder, 17...Fist/perforation hole, 17m...Barge, 19...Cutting side, 20...Folding body, 21.
φ/Φ mouth cylinder, 22...-origami cylinder group, 249 fist 11
11 cutting blade, 25... needle, 27 ψ order/insertion knife, 31 ψ... gripping plate.

Claims (1)

[Claims] A folding machine of a paper web rotary printing press in which a folding cylinder having an insertion knife and a gripper cylinder having a gripper plate are brought into contact with each other, and the web cut by the cutting cylinder is folded by inserting the web into the gripper plate with the insertion knife. A sewing machine cylinder having a sewing machine blade and a receiving cylinder having a sewing machine blade receiver are disposed on both sides of the cutting cylinder on the web conveying upstream side, sandwiching the conveying web, and the sewing machine cylinder and the folding cylinder are connected to the conveying web. A folding machine for a web rotary printing press, characterized in that the receiving cylinder and the gripping cylinder are arranged on the same side with respect to a conveying web.