JPH048502A - Molding method of bent tile - Google Patents

Abstract

PURPOSE:To manufacture easily at high production efficiency even a bent tile having a groove or a notch running along a bending direction, by a method wherein an extruded matter or body from an extrusion molding machine is made into a rectangular material by cutting the same and the rectangular material is bent by pressing the same against a bent surface. CONSTITUTION:In the case where a groove or a notch which runs along a bent surface is provided in a bent tile, a protrusion for formation of the groove or the notch is provided on an extrusion molding machine and an extrusion molded material 1 having, for example, notches 1A-1D, in an angular fringe part is extruded. The extrusion molded material 1 is cut in fixed lengths so that an extruding direction 4 becomes a longitudinal direction and a rectangular material 2 is obtained. The same is pressed against a bent surface before cure and bent along a longitudinal direction. The rectangular material 2 is put between, for example, bent molds 3, 4 and bent. In the case where an angle to be formed of both end surfaces and the bent surface is required to be a right angle from a view point of building, in a bent tile, the bent mold 3 having slopes 3B, 3C meeting at right angles with a protrusion forming part 3A is used, a cutting edge is moved along the slopes 3B, 3C and processing of an end part can be performed easily. The rectangular material 2 where the end part is processed is fired after drying and glazing and made into a product.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for forming curved tiles, and in particular can be easily performed with high production efficiency even for curved tiles having grooves or notches along the curved direction of the curved surface. The present invention relates to a method for forming curved tiles that can be manufactured.

[Prior Art] Bent tiles 11 as shown in FIG. 5 are sometimes constructed at some corners of buildings. Conventionally, such curved tiles 11 are produced by continuously extruding a molded product 12 curved in a direction perpendicular to the extrusion direction A, as shown in FIG. death,
After cutting this to a certain length (dotted line position in Figure 6),
It is manufactured by firing.

By the way, tiles are sometimes provided with notches at the corner edges, or grooves or the like are formed on the surface for decorative purposes or the like. And even in curved tiles, the 7th
As shown in the figure, there are cases where it is necessary to form a curved tile 13 with notches 13a, 13b formed on its corner edges and a curved tile 13 formed with slits 13c and 113d on its surface.

[Problems to be Solved by the Invention] The conventional curved tile manufacturing method described above is suitable for manufacturing a curved tile 11 without cutouts or grooves as shown in FIG. This is extremely unsuitable for manufacturing curved tiles 13 having cutouts 13a, 13b and water 13c, 13d along the curved direction of the curved surface.

That is, in the extrusion molding method as shown in FIG. 346, it is not possible to form cutouts or grooves along the curved direction of the curved surface of the curved tile during extrusion molding. For this reason, it is necessary to perform a cutting operation to form notches and grooves in the molded product obtained by extrusion molding, but it is not possible to form notches and grooves along the curved direction of the curved surface of the curved tile. It is very time consuming and requires a high level of skill, resulting in very poor productivity.

The present invention solves the above-mentioned conventional problems, and makes it possible to easily manufacture curved tiles with high production efficiency even when the curved tiles have grooves or notches along the curved direction of the curved surface. The purpose is to provide

[Means for Solving the Problems] The curved tile forming method of the present invention involves cutting the extrudate from a clay extrusion molding machine into a straight body so that the extrusion direction is the longitudinal direction, and It is characterized by pressing the body against a curved surface and curving it along the longitudinal direction.

[Function] In the curved tile molding method of the present invention, the molded body is curved in the direction in which the clay is extruded from the extrusion molding machine. For this reason,
Grooves and notches are formed in advance by extrusion molding, cut into a straight body so that the extrusion direction is the longitudinal direction, and this straight body is pressed against a curved surface and cut along the longitudinal direction. By curving, it is possible to easily obtain a curved tile having grooves and notches along the curved surface.

[Example] Hereinafter, embodiments will be described in detail with reference to the drawings.

1 to 4 are diagrams for explaining one implementation method of the curved tile forming method of the present invention, and FIGS. 1 to 3 are perspective views,
FIG. 4 is a front view.

In the present invention, first, as shown in FIG. 1, a molded body 1 is extruded from an extrusion molding machine for raw material kneaded clay.

During this extrusion, if it is necessary to provide grooves or notches along the curved surface of the curved tile to be manufactured, the extrusion molding machine should be provided with a convex part for forming the grooves or notches. Assume that it is an extrusion molded product. In the example shown in FIG. 1, an extrusion molded body 1 having notches 1A, IB, IC, and ID at the corner edges is extruded. The extrusion molded body 1 shown in FIG. 1 is a product that is divided into two parts after firing.
E, IF is the hole for dividing, IG is the "crack" for dividing.
This is a crack.

Next, this extrusion molded body 1 is cut into a predetermined length so that the extrusion direction A becomes the longitudinal direction (broken line in FIG. 1) to obtain a straight body 2 as shown in FIG. 2.

Before this straight body 2 hardens, it is pressed against a curved surface and curved along the longitudinal direction. In this example, the third
A pair of curved molds 3 (female mold for forming a convex surface) and 4 (male mold for forming a concave surface) shown in the figure are used, and a straight body 2 is inserted between the curved molds 3 and 4 as shown in FIG. Pinch and curve.

The curved mold 3 shown in FIGS. 3 and 4 has a convex surface forming portion 3.
A sloped surface 3B such that the angle (θ in FIG. 4) formed with the tangential direction of the mold surface of the convex surface forming portion 3A is a right angle on both end edges of A.
, 3C are formed.

These inclined surfaces 3B and 3C serve as guides when cutting the ends of the curved tile.

That is, in the construction of a curved tile, both end faces and a curved surface may be required to be at right angles. In this case, for example, it is necessary to cut off the end of the curved tile along the broken line B shown in FIG. By using the curved die 3 having the inclined surfaces 3B and 3C perpendicular to the curved surface, the edges of the curved tile can be easily processed by moving the cutting blade along the inclined surfaces 3B and 3C.

The straight body thus curved and having its ends cut off if necessary is made into a product by drying, glazing, and firing according to a conventional method.

Note that the examples shown in FIGS. 1 to 4 are merely examples of the present invention, and the present invention is not limited to the illustrated method in any way. For example, as a mold for curving a straight body, it is not necessarily necessary to use a pair of molds, a female mold for forming a convex curved surface and a male mold for forming a concave curved surface, and it is also possible to use only one of them. For example, only a male die 5 as shown in FIG. 8 may be used, and the straight body 2 may be pressed against it to curve it.

The curved tile forming method of the present invention is particularly effective for manufacturing curved tiles that have grooves or notches along the curved direction of the curved surface, but it is also applicable to the manufacturing of curved tiles that do not have such grooves or notches. It goes without saying that it can be done.

[Effects of the Invention] As detailed above, according to the curved tile forming method of the present invention, even if the curved tile has grooves or notches along the curved direction of the curved surface, complicated groove processing or cutting on the curved surface can be avoided. It is possible to manufacture easily and efficiently with high productivity without requiring chipping.

[Brief explanation of drawings]

FIGS. 1 to 4 are diagrams illustrating one implementation method of the curved tile molding method of the present invention, in which FIG. 1 is a perspective view of an extruded body, FIG. 2 is a perspective view of a straight body, FIG. 3 is a perspective view of the curved type, and FIG. 4 is a front view of the same. Figure 5 is a perspective view of a curved tile, Figure 6 is a perspective view explaining the conventional method, Figure 7 is a perspective view of a curved tile with grooves and notches, and Figure 8 is another example of the curved type. FIG. 1... Extruded body, 2... Straight body, 3...
Curved mold (female mold for forming a convex surface), 4... Curved mold (male mold for forming a concave surface). Utility model registration applicant Inax Co., Ltd. Agent
Patent Attorney Tsuyoshi Shigeno Figure 1 Figure 5 Figure 6 Figure 2

Claims (1)

[Claims] (1) The extrudate from the clay extrusion molding machine is cut into a straight body so that the extrusion direction is the longitudinal direction, and this straight body is pressed against a curved surface and curved along the longitudinal direction. A method for forming curved tiles.