JPH0753355B2 - Slitter device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter device for cutting a sheet material in a traveling direction by rotating one or both of a pair of circular blades having a circular cutting edge on the outer periphery thereof.

[0002]

2. Description of the Related Art Heretofore, as a device for moving a belt-shaped sheet material such as paper in the longitudinal direction and cutting it in a direction parallel to the moving direction, a slitter device by the cooperation of a pair of upper and lower circular blades has been known. ing. In particular, for large size products such as CAD plotters such as A0 size plotters,
A cutter and slitter device is required to output small size drawings such as A3 and A4 sizes. In such a slitter device, it is necessary to slit or not slit according to various drawing sizes,
Therefore, one of the pair of upper and lower circular blades is configured to move up and down in a direction perpendicular to the axis of the circular blade (for example, see Japanese Patent Laid-Open No. 59-164192).

Conventionally, this type of device is as shown in FIG.
A circular blade having a support shaft 2 arranged at right angles to the traveling direction of the sheet material 1 to be cut, and an annular groove 5 and a cylindrical surface 6 which are attached to the support shaft 2 and form a circular cutting edge 4. (Hereinafter referred to as a fixed blade) 3, a disk-shaped circular blade 7 provided corresponding to the fixed blade 3 and cutting the sheet material 1 in cooperation with the circular cutting blade 4, and the circular blade 7. Adjacent to each other,
The sheet material 1 includes a pressing roller 8 that presses the sheet material 1 against the cylindrical surface 6 of the fixed blade 3, and a circular blade 7 and a blade holding device 9 that holds the pressing roller 8 so as to be movable up and down. When the sheet material 1 is cut in the traveling direction, the circular blade 7 is pushed downward as shown in the drawing, the blade on the outer periphery thereof is pressed against the circular cutting blade 4 of the fixed blade 3, and the support shaft 2 is rotated to rotate the sheet material 1 Had been disconnected. At this time, presser roller 8
Has pressed the sheet material 1 against the cylindrical surface 6 of the fixed blade 3 and restrained it so that the sheet material does not move undesirably during cutting. Further, when it is not necessary to cut the sheet material 1, the blade holding device 9 lifts the circular blade 7 upward so that it is not in contact with the fixed blade 3.

Here, usually, a plurality of fixed blades 3 are attached to the support shaft 2 with a certain space therebetween. For example, as shown in FIG. 4, in an apparatus for handling a sheet material 1 of A0 size. Has five fixed blades 3 fixed to the support shaft 2 at regular intervals so that it can be cut into A4 size. By the way, the paper size is slightly different according to the standard. For example, the length in the width direction of A4 is 210.25 mm according to the ISO standard as shown in FIG.
In the case of SI standard, as shown in FIG. 4 (b), it is 215.9 m.
m, and the fixed blade 3 was fixed at a position according to each standard.

[0005]

However, in such a conventional configuration, the fixed blade 3 is fixed to the support shaft 2 at a predetermined interval, and therefore one standard (for example, I
When set to SO, other standards (eg ANS
There was a problem that the cutting in I) could not be performed.

To solve this problem, for example, as shown in FIG. 4, when five fixed blades 3 are used, the fixed blade 3 at the central position A is used as a reference position, and B on both sides of the fixed blade 3 are used as reference positions. A circular cutting edge is formed on each fixed blade 3 arranged at the C position at a position corresponding to the length of each standard, and a blade holding device 9 holding the circular blade 7 is positioned in a direction parallel to the support shaft. It is considered that it should be adjustable. For example, as the fixed blade 3 arranged at the position B, as shown in FIG. 5, a fixed blade 3A having two circular grooves 5a and 5b formed on its outer peripheral surface so as to form two circular cutting edges 4a and 4b is used. When the blade holding device 9 is used and the position of the blade holding device 9 can be adjusted in the direction parallel to the support shaft 2, and one of the circular cutting blades 4 is used for cutting according to the ISO standard.
It is considered that the other circular cutting edge 4b should be used when performing the ANSI standard cutting using a.

However, in the case of this structure, the fixed blade 3A provided at the position B adjacent to the reference position (position A) in FIG.
The interval between the circular cutting blades 4a and 4b formed in 1 is extremely small (specifically, 5.65 mm). Therefore, as shown in FIG. 5, the ANSI standard circular cutting blade 4b is used.
When using, the pressing roller 8 is located on the annular groove 5a forming the other circular cutting edge 4a, the sheet material 1 cannot be pressed well, and there is a problem that defective cutting may occur. there were.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a slitter device which can be adjusted to easily perform cutting of different standards without causing cutting failure. .

[0009]

In order to solve the above-mentioned problems, the present invention has three fixed blades arranged adjacent to each other on a support shaft, with the fixed blade on one end side as a reference position, and the center position. The fixed blade placed on the support shaft is movable with respect to the support shaft, and stoppers for restricting the moving range of the fixed blade are fixedly provided on the support shaft on both sides thereof. Is provided with two circular cutting blades spaced apart from each other and a cylindrical surface is formed between them.

[0010]

Since the present invention has the above-described structure, of the three fixed blades arranged adjacent to each other, the movable fixed blade at the center is fixed to the position where it abuts on one stopper, and By using one circular cutting edge of the fixed blade, it is possible to perform cutting in one standard size, and fix the movable movable blade at the center to the position where it abuts the other stopper,
Further, by using the other circular cutting blade of the fixed blade on the other end side, it is possible to perform cutting in other standard sizes. On this occasion,
Since the central fixed blade may be fixed at a position where it abuts either of the stoppers provided on both sides of the central fixed blade, the positioning is easy and the standard changing work is easy. In addition, the fixed blade provided on the other end side is provided with two circular cutting blades for different standards. This fixed blade is located at a position separated from the reference fixed blade by the distance of two cutting sheets. Because it is in 2
The distance between the circular cutting blades is large, so a wide cylindrical surface that supports the pressing roller can be formed between the circular cutting blades, and the sheet material is pressed well by the pressing roller and its cylindrical surface. The sheet material can be cut in this state, and cutting failure does not occur.

[0011]

1 is a schematic side view schematically showing the arrangement of fixed blades in a slitter device according to an embodiment of the present invention in accordance with each standard, and FIG. 2 is arranged in the center of the embodiment. It is a schematic sectional drawing which shows a fixed blade, a circular blade which cooperates with it, etc., The same code | symbol is attached | subjected and shown to the same component as the prior art example shown in FIG. 3, FIG. 1 and 2,
Reference numeral 1 is a sheet material to be cut, and 2 is a support shaft arranged at right angles to the moving direction of the sheet material 1, which is connected to a rotation drive device (not shown). The support shaft 2 holds five fixed blades, three of which are shown in FIG. The fixed blade 3 arranged at the position A (the central portion of the support shaft 2) has one annular groove 5 forming the circular cutting edge 4 and has a cylindrical surface 6 adjacent to it, as in the conventional case. . The fixed blade 3 serves as a reference and is fixed to the support shaft 2.

Fixed blades 3 arranged at positions B and C
B and 3C are of the same shape and have two annular grooves 5a and 5b forming two circular cutting edges 4a and 4b, respectively, and cylindrical surfaces 6a and 6b adjacent thereto. The fixed blade 3B at the B position is provided movably with respect to the support shaft 2, while the fixed blade 3C at the C position is fixedly provided on the support shaft 2. Here, the fixed position of the fixed blade 3C and the positions of the two circular cutting blades 4a and 4b are two circular cutting positions from the circular cutting blade 4a of the fixed blade 3 at the reference A position to the fixed blade 3C of the C position. The distances to the blades 4a and 4b are ISO standard,
A3 size according to ANSI standard (210.25 x 2
mm, 215.9 × 2 mm). By defining in this way, the circular cutting blades 4a, 4b
Even when the circular cutting edge 4b on the ANSI standard side is used [see FIG. 1 (b)], the pressing roller 8 is positioned on the annular groove 5a forming the other circular cutting edge 4a. The sheet material 1 can be pressed down satisfactorily.

The fixed blade 3B arranged at the position B is movably attached to the support shaft 2 as described above, and a pair of stoppers 10a and 10b are fixed to the support shaft 2 on both sides thereof. It is provided. This stopper 10a,
As for the mounting position of 10b, the fixed blade 3B is attached to one stopper 10
When pressed against a, the distance from the circular cutting edge 4a to the circular cutting edge 4 of the standard fixed blade 3 becomes the size of A4 size (210.25 mm) according to the ISO standard, and conversely the fixed blade 3B is pressed against the other stopper 10b. The distance from the circular cutting edge 4b to the circular cutting edge 4 of the reference fixed blade 3 is determined to be the size of A4 size (215.9 mm) according to the ANSI standard. The fixed blade 3B is provided with a set screw (not shown) so that the fixed blade 3B can be fixed to the support shaft 2 while being in contact with the stopper 10a or 10b.

In FIG. 2, a disk-shaped circular blade 7 corresponding to the fixed blade 3B for cutting the sheet material 1 in cooperation with the circular cutting blade 4a or 4b, and adjacent to the circular blade 7. A pressing roller 8 for pressing the sheet material 1 against the cylindrical surface 6a or 6b of the fixed blade 3B, a circular blade 7 and a blade holding device 9 for holding the pressing roller 8 so as to be movable up and down are provided. There is. The blade holding device 9 has an adjustable mounting position in a direction parallel to the support shaft 2. A circular blade 7, a pressing roller 8, a blade holding device 9 and the like are also provided for the fixed blades 3 and 3C provided at positions other than the B position.

With respect to the slitter device having the above structure,
The operation will be described below. When this slitter device is used for ISO standard A4 size cutting, as shown in FIG. 1A, the fixed blade 3B at the B position is pressed against the stopper 10a and fixed at that position. The circular blade 7 is a circular cutting blade 4a
Set it to the position where it will cooperate with. Also, the fixed blade 3 at the C position
The circular blade 7 corresponding to C is set at a position cooperating with the circular cutting blade 4a. As a result, the sheet material is
Can be cut into 4 sizes.

Next, in order to change this slitter device to the ANSI standard, as shown in FIG. 1 (b), the fixed blade 3B at the B position is pressed against the stopper 10b to be fixed at that position and the circular blade 7 is fixed. Is set in a position that cooperates with the circular cutting edge 4b. Also, a circular blade 7 corresponding to the fixed blade 3C at the C position
Is set in a position that cooperates with the circular cutting edge 4b. Thereby, the sheet material can be cut into ANSI standard A4 size. At this time, the pressing roller 8 is fixed on the fixed blades 3B and 3C.
Is located on the annular groove 5a side with respect to the circular cutting edge 4b, but the distance from the circular cutting edge 4b to the annular groove 5a is considerably large, and since the cylindrical surface 6b is formed between them,
This pressing roller 7 can press the sheet material 1 against the cylindrical surface 6b and restrain it, and good cutting is possible.

As described above, with the slitter device having the above-described structure, the sheet material can be cut into a size conforming to the ISO standard and the ANSI standard by simple adjustment, and the sheet material is always pressed by the pressing roller. Can be cut into

In the above embodiment, the fixed blade 3B arranged at the B position is provided with the two circular cutting blades 4a and 4b. However, the present invention is not limited to this, and the fixed blade 3B is located at the A position. You may use the thing similar to the fixed blade 3 arrange | positioned. However, in this case, the distance for moving the fixed blade when the standard is changed is slightly increased.

[0019]

As is apparent from the above description, according to the present invention, among the three fixed blades arranged adjacent to each other on the support shaft, the fixed blade on one end side is used as the reference fixed blade, and the center fixed blade is used. The fixed blade placed on the support shaft is movable with respect to the support shaft, and stoppers for restricting the moving range of the fixed blade are fixedly provided on the support shaft on both sides thereof. Since two circular cutting blades spaced apart from each other are formed and a cylindrical surface is formed between them, the central fixed blade is fixed at the position where it abuts one stopper, and the fixed blade on the other end side is fixed. By using one circular cutting edge,
Cutting with one standard size is possible, and by fixing the central fixed blade to the position where it abuts on the other stopper, and using the other circular cutting edge of the fixed blade on the other end side, it is possible to cut with other standard sizes. In addition, when the two circular cutting blades are formed on the fixed blade, the distance between them can be made sufficiently large, so that the sheet material can be satisfactorily pressed against the cylindrical surface between them by the pressing roller. It has the effect that it can be satisfactorily cut into a predetermined size.

[Brief description of drawings]

FIG. 1A is a schematic cross-sectional view showing a fixed blade arrangement in a slitter device according to an embodiment of the present invention set to ISO standard, and FIG. 1B is a schematic sectional view showing the fixed blade arrangement in ANSI standard. Cross-sectional view shown in the set state

FIG. 2 is a schematic cross-sectional view showing a fixed blade arranged at a position B and a circular blade cooperating with the fixed blade in FIG.

FIG. 3 is a schematic sectional view showing a fixed blade used in a conventional slitter device, a circular blade cooperating with the fixed blade, and the like.

FIG. 4 (a) is a schematic cross-sectional view showing a fixed blade arrangement in a conventional slitter device set to ISO standard, and FIG. 4 (b) shows a fixed blade arrangement set to ANSI standard. The schematic sectional view (c) is a plan view showing the size of the sheet material cut by the slitter device.

FIG. 5 is a schematic cross-sectional view showing a fixed blade and a circular blade or the like cooperating with the fixed blade, which is considered to be capable of easily changing the standard.

[Explanation of symbols]

 1 sheet material 2 support shaft 3, 3A, 3B, 3C fixed blade 4, 4a, 4b circular cutting edge 5, 5a, 5b annular groove 6, 6a, 6b cylindrical surface 7 circular blade 8 presser roller 9 blade holding device 10a, 10b Stopper

Claims (1)

[Claims] 1. A support shaft arranged at right angles to a traveling direction of a sheet material to be cut, and at least three support shafts mounted on the support shaft with a space therebetween, each having a circular cutting edge and a cylindrical surface. Fixed blade of, and provided corresponding to each fixed blade, a circular blade that cuts the sheet material in cooperation with the circular cutting blade, and is provided adjacent to each circular blade, the sheet material of the fixed blade Of the three fixed blades that are arranged adjacent to each other, the central fixed blade is movably attached to the support shaft, and the fixed blades are provided on both sides of the fixed blade. A stopper for restricting the movement range is fixedly provided on the support shaft, and further, at least one of the fixed blades arranged on both sides is provided with two circular cutting blades and a cylindrical surface between them. Characteristic slitter device.