JP2013244567A - Jump sewing machine device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the position of a jump portion of a perforation while using a cam mechanism in forming a perforation by pressing a disk blade having a blade intermittently provided on a circumference against a sheet. The jump sewing machine device 3 has a combination cam plate 35 that moves the disk blade 12 up and down, and the cam plate 35 is composed of one or more unit cam plates. . By configuring the combination cam 35 board by freely setting the position of the convex part of the unit cam board, the position of the jump part set on the paper 11 can be adjusted.
[Selection] Figure 3

Description

  The present invention relates to a perforation processing technique used for processing a form or the like, and particularly relates to a jump sewing device used for perforation processing for partially releasing a perforation.

Paper products often have broken lines called perforations. A perforation is a broken line-like cut for crease or separation, and is often used for forms. However, the production of forms is usually performed continuously using long strips of paper. However, processing such as printing and perforation is performed by repeating each unit of the form.
The perforation is placed vertically and horizontally in the form. In particular, there is a so-called jump perforation device as a perforation processing device used for periodically perforating in the paper running direction.
In many cases, the jump sewing apparatus has a disk blade provided with a sawtooth blade on the circumference, and forms a perforation in the traveling direction by pressing the disk blade against the traveling paper. At this time, it has a mechanism for separating (jumping) the disk blade from the paper at a predetermined position of the paper.
A mechanism that jumps in this way prevents, for example, that when the perforation in the width direction and the running direction overlap, the strength of the crossing portion decreases and tears may occur from the crossing portion during processing or distribution. It is used for such applications. Thus, a perforation or perforation machining with a partial jump is called a jump perforation.

FIG. 1 is a diagram showing a perforation, and shows a state in which a perforation 100 in the traveling direction is interrupted (jumped) at an intersection 101.
The jump length 105, which is the jump distance at the intersection 101, is about 3 to 5 mm, and the jump position differs depending on the item. Therefore, various devices have been made to the jump sewing machine or the sewing blade used for the jump sewing machine. Yes.

  Patent Document 1 describes the formation of a sewing machine blade used for a jump sewing machine, and the jump sewing machine is realized by affixing the sewing machine blade intermittently to the circumference of the ring. This facilitates adjustment of the position of the jump portion and the jump length.

JP 2001-334495 A

  The mechanism used for the jump sewing machine is not limited to that of Patent Document 1, and in recent years there is also provided a mechanism for moving the disk blade up and down by an electromagnetic actuator. As described above, the length of the jump portion is several mm. In addition, since the jump operation needs to be performed quickly and reliably, a cam-type jump sewing apparatus that uses a cam mechanism to release the sewing machine blade at the jump portion has been widely used.

FIG. 2 is a schematic diagram of a jump sewing machine using a cam mechanism.
The jump sewing machine 10 has a disk blade 12 having a sawtooth blade and a pressurizing unit 13 that presses against the paper 11 by pressing of the pressurizing spring 14, and the disk blade 12 rotates along with the paper 11 to be continuous. Perforations are formed. The pressurizing unit 13 is configured to move the disc blade 12 up and down around the pressurizing shaft 15, and the pressurizing shaft 15 is reciprocated in the rotational direction by the cam plate 16. That is, due to the shape of the convex portion 19 provided on the cam plate 16, the follower 17 in contact with the cam plate 16 is reciprocated, and this is the reciprocating motion of the rotary shaft 15. As a result, the disk blade 12 is moved up and down via the pressurizing unit 13. Here, “upper” at the top and bottom is a state in which the disk blade 12 has escaped, and “lower” is a state in which the rotation 2 is pressed against the paper 11 and machined.
In addition, the convex part 18 provided in the cam board 16 is set according to the length and position of the jump part 19, and the rotation of the cam board 16 is set to synchronize with a unit of processing of the form.

  However, since the position of the intersecting portion 101 differs depending on the product item, the cam panel 16 needs to be tailored to the specification of the item, which is a great obstacle in terms of production efficiency, especially in the high-mix low-volume production. .

  Therefore, an object of the present invention is to provide a jump sewing device that can adjust the position of a jump portion of a perforation while using a cam mechanism.

The jump sewing device of the present invention includes a disk blade that forms a perforation in the traveling direction of a continuous sheet of traveling paper, and a cam mechanism that controls the disk blade to jump the disk blade at a predetermined position of the paper. A jump sewing machine,
The cam mechanism includes a cam plate having a convex portion on the circumference of the rotating disk and a follower that abuts against the cam disk and causes a reciprocating motion. One cam disk is provided on the circumference of the rotating disk. The plurality of unit cam boards having the above convex portions are overlapped with the same rotation axis, thereby setting the convex portions at a plurality of positions corresponding to the predetermined position.

  The jump sewing machine of the present invention can easily set the position and the number of jump portions while using a cam-type jump mechanism. For this reason, it is suitable for the jump sewing machine processing in high-mix low-volume production.

The figure which shows the aspect of perforation Schematic diagram of jump sewing machine with cam mechanism The figure which shows the jump sewing apparatus of this invention The figure which shows the combination cam board of the jump sewing machine apparatus of this invention Diagram showing configuration example of combination cam panel The figure which shows the mode of the combination cam panel

Hereinafter, the jump sewing machine of the present invention will be described in detail with reference to the drawings.
FIG. 3 is a view showing a jump sewing machine according to the present invention.
The jump sewing machine 3 has a cam mechanism using a combination cam board 35, and the convex part 39 gives a reciprocating motion to the follower 17 as the combination cam board 35 rotates, so that the disk blade 12 passes through the pressure shaft 15. Reciprocating motion
The combination cam panel 35 is a cam panel integrated by combining one or more unit cam panels, and is configured such that the convex portions 39 of each unit cam panel are combined corresponding to each intersection 101. Yes.

FIG. 4 is a schematic diagram showing a combination cam board.
The combination cam board 35 is configured by superposing one or more unit cam boards 45. Further, the unit cam board 45 has one or more convex portions 39 on its circumference, and the shape of the convex portions 39 is set corresponding to the jump length 105.
The combination cam board 35 is configured in accordance with the position and number of jumps. In the example of FIG. 4, the combination cam board 35 uses three unit cam boards 45 and jumps at three locations. The jump position can be freely set by adjusting the phase of each unit cam board 45.

FIG. 5 is a diagram showing a configuration example of a combination cam board, and shows a mode in which unit cam boards are assembled. The hatched portion in FIG. 5 represents the cross-sectional shape.
Each unit cam board 45 is assembled to the cam base 32 so that the convex portion 39 has a phase corresponding to the jump position, and is fixed to the cam base 32 by tightening the fixing ring 33. Further, the cam base 32 is fixed to the pressure shaft 15 in accordance with the jump position in the traveling direction and the width direction of the paper 11. Thereby, in the example of FIG. 5 using the three unit cam boards 45, jumps can be realized at arbitrary positions in at least three places.

  Moreover, the combination cam board 35 is not limited to the configuration in which the convex portions 39 as shown in FIG. 6A are matched to the number of jumps, but as shown in FIG. A configuration corresponding to jumping is also possible. As a result, the length of the jump portion (jump length 105) can be arbitrarily set.

  The jump sewing machine according to the present invention realizes the reliable and excellent dimensional accuracy of the jump sewing machine, which is a feature of the cam system, and can easily and flexibly set the position and number of jump parts. Suitable for processing. Further, modification from the conventional cam type jump sewing machine is relatively easy.

DESCRIPTION OF SYMBOLS 11 Paper 12 Disk blade 13 Pressure part 15 Pressure shaft 16 Cam board 17 Follower 19 Convex part 35 Combination cam board 39 Convex part 45 Unit cam board

Claims (1)

A jump sewing device comprising a disk blade that forms a perforation in a traveling direction of a continuous paper that travels, and a cam mechanism that controls the disk blade to cause the disk blade to jump at a predetermined position of the paper,
The cam mechanism has a cam disk having a convex portion on the circumference of the rotating disk, and a follower that abuts against the cam disk and causes reciprocation.
The cam plate sets a convex portion at a plurality of positions corresponding to the predetermined position by superimposing a plurality of unit cam plates having one or more convex portions on the circumference of the rotating disc with the same rotation axis. A jump sewing machine characterized in that:

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