JPS6029326B2 - Molding method for tile base with sole foot and lower mold used for this method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a tile base with a sole and a lower mold used therein.

Conventionally, in the method of forming a tile base with soles, as shown in FIG. Then, the frame 2 is raised as shown by the two-dot chain line in the figure, and then a molding cup (not shown) is supplied onto the lower molding molds A' and A, and the upper mold 3 is lowered to perform pressure molding. After that, lower the frame 2 and lower the upper mold 3.
As shown in FIG. 1B, as shown in FIG. Molding bases a and a' are obtained by pushing and releasing the molding base a' on the front lower molding mold A' with the molding base a that is scale-shaped from A and passing over the front lower molding mold A'. Ta.

However, in this conventional method, when the molding material a passes over the lower molding mold A' due to the backing of the powder body 4, the entire sole 5 of the molding material a is inside the groove 6 of the lower molding mold A'. Due to the shock when completely falling into the molded body A, the lower green portion of the molded body A was chipped, which was an unfavorable defect in manufacturing. The object of the present invention is to provide a method for forming a base tile with hair feet to eliminate the above-mentioned drawbacks, and a lower mold for use in the method.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIGS. 3 and 4 show an embodiment of the lower molding mold according to the present invention, and the lower molding mold B has protrusions 7 extending in the front-rear direction on the upper surface of an elastic, soft plate-like material made of synthetic rubber or the like. A large number of ridges 7, 7... are formed in parallel, and a small recess (for example,
A hemispherical groove 8 on the second side is recessed, and a groove 9 having a gradually deeper concave portion 9a in the shape of a side boat bottom is formed between the protrusions 7 and 7 on both front and rear sides, as will be described later. This makes it easy to remove the tile base b. Note that the entire lower mold B is not limited to a soft elastic material made of synthetic rubber, etc., but only the protrusions 7 may be made of a soft elastic material, and the other parts may be made of a hard material such as steel, or Of course, the entire lower mold B can be made of a hard material. Next, the method of the present invention using the lower mold B will be explained based on the embodiment shown in FIG.

First, the molding lower mold B is placed behind the lower mold table 1, and the molding lower mold A, which is formed in the same shape as the molding lower mold B except that the small recess 8 is not formed, is placed in the molding The battle layer is placed on the lower mold stand 1 located in front of the lower mold B. Next, after the molding materials are combined on the lower molding molds A and B to form a pressurized mold (not shown), the frame 2 is lowered and the upper mold (not shown) is raised. Continuously, by pushing the rear side of the molding base b on the lower mold B forward (in the direction of the blank C) with the front end surface 4a of the powder cell 4, the front surface of the molding material b is shaped from the lower mold B and The molding material b passing over the lower molding mold A pushes the molding material a on the lower molding mold A into a rock shape, thereby obtaining the molding materials a and b. Since a small protrusion 11 is formed near the rear of the bottom of the back groove 10 of the molded base b, the molded base b
When passing over the lower mold A, the protrusions 12 of the molding base b do not completely fit into the corresponding grooves 9 of the lower mold A, and the small protrusions 1 1 of the molding base b do not completely fit into the corresponding grooves 9 of the lower mold A. Only a part of the small protrusions 11 that are not essential parts of the molding base b contact the upper surface of the protrusion 7 of the lower molding mold A, and the molding base b
There is no chipping on the lower rear edge.

As described in detail above, the method of the present invention, which uses a molding lower mold in which a small concave portion is provided near the rear of the upper surface of the convex strip, is effective in mass-producing tile bases without damage to the lower rear twill portion. .

Further, the lower molding mold according to the present invention has the effect that it is possible to extremely easily provide a molding mold that can produce a tile base without damage to the lower rear edge.

[Brief explanation of the drawing]

FIGS. 1A and B are cross-sectional views showing a conventional method for forming a tile base with sole feet, FIG. 2 is a cross-sectional view showing an embodiment of the method for forming a tile base with sole feet according to the present invention, and FIG. 3 is a cross-sectional view showing an embodiment of the method for forming a tile base with sole feet according to the present invention. FIG. 4 is a plan view showing an embodiment of the lower mold according to the above, and FIG. 4 is a sectional view taken along the line W--W of the same. 1...Lower mold stand, 7...Convex strip, 8...
・Small recess. Figure 3 Figure 4 Figure 1 Figure 2

Claims (1)

[Claims] 1. In a method for forming a tile base with sole feet, a lower mold A having a plurality of parallel protrusions extending in the front-rear direction on the upper surface side is placed on a lower mold table, and a mold similar to the above is placed on the upper surface side. A lower mold B, which has a small recess near the rear of the upper surface of at least one of the protrusions formed in parallel with each other, is placed on a lower mold stand located behind the lower mold A, and the molding material is the lower mold A,
After being supplied onto B and pressure-molded, the material is released from the lower mold B by pushing forward the rear side surface of the molding base b on the lower mold B and passes over the lower mold A. A method for forming a tile base with soles, characterized in that the molding base a on the lower mold A is pushed back and released by the molding base b. 2. Molding lower mold A and molding lower mold B, in which a large number of protrusions extending in the front and back direction are formed in parallel on the upper surface side, are placed in front and behind the lower mold table, and the molding base b obtained on the rear molding lower mold B is placed. In the lower forming mold B of the tile base forming apparatus with a sole foot, which is configured to be discharged by passing over the lower forming mold A in the front, a small recess is provided near the rear of the upper surface of at least one of the protruding stripes. The lower mold is characterized by: