JPH01320107A - Green sheet-slitter - Google Patents

Abstract

PURPOSE:To contrive to prevent a green sheet from generating scraps, while the edge-fitting of a slitter is cause to be easy by cutting the green sheet inserted into between a disklike roll cutter and other rotary body into a belt- shape. CONSTITUTION:In a slitter 1, the disklike roll cutter 12 having a sharp edge 11 on its tip, is fixed onto a rotary shaft 4 capably of attaching and removing, and the rodlike rotary body 13 brought in contact with the roll cutter 12 and rotating at the opposite position being nipping a green sheet 2, is arranged in parallel with the rotary shaft 4. In this construction, the green sheet 2 separated from a sheet 3 by forming the sheet, passes through between the roll cutter 12 and the rotary body 13, and is cut into a V shape and divided by the roll cutter 12 during the passing. Consequently, the edge-fitting becomes easy, and the scrap of the green sheet in cutting can be perfectly omitted.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a green sheet slitter that cuts a green sheet to a desired width in a sheet forming machine that manufactures ceramic green sheets (hereinafter referred to as green sheets) by a doctor blade method. It is related to.

[Conventional technology]

FIG. 4 is an explanatory diagram of a conventional sheet forming machine. In the figure, (1) is a slitter, (2) is a green sheet, (
3) It is a sheet. The green sheet (2) is formed by applying a slurry made of solid powder, resin, and solvent onto the sheet (3) using a doctor blade (not shown) and drying the slurry.

Figure 5 is a perspective view of the slitter (1). Disk-shaped cutters (6) and (7) with blades are attached so that the side blades are in contact with each other, and cut the green sheet (2) by rotation.

In the above configuration, the slurry applied on the sheet (3) is dried to become a green sheet (2), which is peeled off from the sheet (3). The peeled green sheet (2) is usually divided into strips of a desired width and wound into a coil. The role of the slitter (1) is to perform this division, and the conventional slitter (1) has the upper and lower parts as described above.
It had been worn away by the side blades of the disc-shaped cutters (6) and (7).

[Problem to be solved by the invention]

As mentioned above, conventional slitters were scraped by the upper and lower disc-shaped side blades, so the gap between the side blades had to be constant at all times, and the scraped green sheet (
There was a problem with 2), such as the constant generation of waste.

This invention was made to solve the above-mentioned problems, and it not only makes it easier to align the slitter blades, but also
To obtain a green sheet slitter capable of completely eliminating waste from green sheets.

[Means to solve the problem]

The green sheet slitter of this invention is a green sheet slitter that divides green sheets made of solid powder and resin into desired widths, and a plurality of disc-shaped roll cutters with sharp blades at the tips can be attached to and detached from a rotating shaft. A rotating body is fixedly fixed to the green sheet and rotates at a position opposite to the green sheet, and is arranged parallel to the rotation axis.

[For production]

In the green sheet slitter according to this invention, 1
A green sheet is inserted between the disc-shaped roll cutter and the other rotating body and cut into strips.

In this invention, by using a roll cutter as the slitter, a slitter that does not generate green sheet waste can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows a green sheet slitter using the single-cut method, FIG. 2 is a perspective view of a green sheet slitter using the double-cut method, and FIG. 3 is a cross-sectional view of a roll cutter. indicate the same or equivalent part.

In Figure 1, the slitter (1) has a sharp blade (
A disc-shaped roll cutter (12) having a green sheet (11) is removably fixed to the rotating shaft (4), and a green sheet (2
) on the rotation axis (4)
is placed parallel to. In FIG. 2, the rotary body (13) has another roll cutter (14) rotating opposite to the roll cutter (12), and another rotation axis (5) arranged parallel to the rotation axis (4). ) is removably fixed.

In the above configuration, the green sheet (2) separated from the sheet (3) by sheet forming passes between the roll cutter (12) and the rotating body (13), and is divided by the roll cutter (12) during that time. In the case of FIG. 1, the green sheet (2) is cut and divided into V-shapes from above by a roll cutter (12). In the case of FIG. 2, roll cutters (12) and (14) are used to cut and divide the film into a V-shape from both the upper and lower sides.

If the circumferential speed of the blades (11) of the roll cutters (12) and (14) is less than the speed of the green sheet (2), lateral wobbling of the blades of the roll cutters (12) and (14) will occur. Blades (11) of cutters (12), (14)
It is preferable that the circumferential speed of green sheet (2)≧the speed of green sheet (2).

Also, the angle θ of the tip of the blade (11) is set to minimize deformation when slitting the green sheet.

0545 degrees is desirable.

Although the above embodiment describes the division of a green sheet made of solid powder and resin, the same effect can be achieved with various sheets that can be cut with a roll cutter.

〔Effect of the invention〕

As described above, according to the present invention, since the green sheet is cut by a roll cutter as a slitter, the blades can be easily aligned, and it is possible to completely eliminate the waste of the green sheet during cutting.

[Brief explanation of the drawing]

1 and 2 are perspective views of a green sheet slitter according to another embodiment of the present invention, FIG. 3 is a sectional view of its roll cutter, FIG. 4 is an explanatory diagram of a sheet forming machine, and FIG.
The figure is a perspective view of a conventional green sheet slitter. In each figure, the same reference numerals indicate the same or corresponding parts. (1) is a slitter, (2) is a green sheet, (3
) is the sheet, (4) and (5) are the rotating shafts, (11) is the blade, (1, 2) and (14) are the roll cutters, (
13) is a rotating body.

Claims (1)

[Claims] (1) In a green sheet slitter that divides green sheets made of solid powder and resin into desired widths, a plurality of disc-shaped roll cutters with sharp blades at the tips are removably fixed to a rotating shaft, A green sheet slitter characterized in that a rotating body that rotates at a position opposite to the green sheet across the green sheet is arranged parallel to the rotation axis.