JPH07112692B2 - Cutting method for inorganic building materials - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cutting method for producing an inorganic building material such as a flat roof tile.

[Conventional technology]

In the case of manufacturing a building material such as a flat roof tile from an inorganic raw material such as cement or clay, conventionally, as shown in FIG. 4, a roll cutter B having a cutter blade A projected on a roll surface is shaped like a roof tile to be cut. As shown in FIG. 3A, the belt-shaped inorganic material D conveyed by the belt conveyor C is cut, and after natural curing, the product material E is cut into a solid line state in FIG. The roof tile F is used.

In FIG. 3B, the hatched portion is a working portion exposed to the outside in the roofing state of the tile.

[Problems of conventional technology]

However, the conventional method described above is advantageous in that the flat roof tile F can be continuously manufactured, but the roof tile F and the draining portion G exposed to the outside have the same shape, so that the roof surface has a geometrical design. The feeling was unified, and the expression on the roof surface was monotonous.

[Problems to be Solved by the Invention]

In view of the above problems, the present invention has been made for the purpose of providing a cutting method capable of continuously manufacturing building materials having different shapes.

[Technology that has solved the problem]

That is, the cutting method of the inorganic building material of the present invention is a circular cutter in which the continuous state of the blades is irregularly changed in the circumferential direction, and cuts the central portion of the band-shaped raw material of the inorganic building material continuously conveyed by the belt conveyor. Then, the strip-shaped raw material is then cut in the width direction at regular intervals in the length direction.

〔Example〕

 Next, an embodiment of the present invention will be described.

FIG. 1 is a perspective view of a circular cutter used in an embodiment of the present invention, and FIGS. 2A, 2B and 2C are operation explanatory views of the embodiment.

The method for cutting an inorganic building material according to the present invention uses a circular cutter 1 in which the continuous state of the blades 1a is irregularly changed in the circumferential direction as shown in FIG. It is constituted by a step of cutting the central portion 2a of the band-shaped raw material 2 and then cutting the band-shaped raw material 2 in the width direction (arrow Y) with a cutter 3 at predetermined constant intervals l in the length direction (arrow X). .

Then, after the roof tile material 20 obtained by the above cutting is naturally cured, a solid line portion is cut off using a punch die set to manufacture a roof tile 21 shown by a chain line as shown in FIG.

[Operation] According to the above method, when the strip-shaped raw material 2 is cut into two rows by the circular cutter 1, the cutting line is continuously changed into an irregular shape as shown in FIG. Part 2b, 2c
Since the cutting shape of the same portion of the roof tile material is different, the shape of the draining portion 22 of the roof tile material 20 obtained by cutting with the cutter 3 also changes irregularly as shown in FIG. Since the shape of the portion 22 is changed for each roof tile, the flat roof tiles 21 having different shapes can be continuously produced.

Therefore, an irregular draining line is generated on the roof surface that is roofed by using the above flat roof tile 21, and the roof surface can have various expressions.

〔effect〕

Since the present invention is configured as described above, it is possible to continuously produce building materials having different cutting shapes by using one kind of cutter. For example, when the building material is a roof tile, this roof tile is used for roofing. It has the effect that various expressions can be added to the roof surface.

[Brief description of drawings]

FIG. 1 is a perspective view of a circular cutter used in an embodiment of the present invention, FIGS. 2A, 2B, and 2C are operation explanatory views of the embodiment, FIGS. 3A and 3B are explanatory views of a conventional method, and FIG. FIG. 6 is a perspective view of a roll cutter used in a conventional method.

Claims (1)

[Claims] 1. A central part of a band-shaped raw material of an inorganic building material continuously conveyed by a belt conveyor is cut by a circular cutter whose blades are continuously irregularly changed in a circumferential direction, and then the band-shaped raw material is cut. A method for cutting an inorganic building material, which comprises cutting the material in the width direction at regular intervals in the length direction.