JP2581158B2 - Press mold structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a press mold for pressing a paper cement sheet (green sheet) to give a surface pattern.

[Prior art] The cement raw sheet (green sheet) is used for roof tiles, interior panels and the like. In this case,
A large number of green sheets of a certain size were pressed to obtain a large number of pieces, and a pattern was formed on the surface to increase the density. Furthermore,
Parts other than the product (ears) need to be cut and removed.

Conventionally, patterning a green sheet and cutting and removing an ear portion have been performed separately.

That is, a pattern is formed on the green sheet with a press, and a streak groove for cutting the ear portion is formed by a press, and curing is performed with the ear portion attached. After curing, the ear is cut along the precision cut or the stitch groove. Department was excluded.

In addition, the green sheet was patterned with a press, and then the ears were removed with a slitter or the like, followed by curing.

[Problems to be Solved by the Invention] In the conventional technology, the patterning of the green sheet with a press and the cutting and removal of the ears are separately performed, so that the manufacturing equipment is complicated.

Attempts have also been made to perform patterning and cutting and removing of the ears at the same time using a press.However, simply providing a press blade causes burrs and burrs on the product, and the dimensional change after cutting is large. There were practical problems.

The present invention has been made to eliminate these disadvantages, and has eliminated these disadvantages by forming the press blade into a specific shape.

[Means for solving the problem]

The present invention relates to a structure of a press die for pressing a formed cement raw sheet (green sheet) to form a pattern on the surface thereof, wherein a press blade is planted on the die press surface in a shape along the outer shape of the product. The inner surface angle of the blade is formed so as to be substantially perpendicular to the press surface, and the outer inclined surface angle of the press blade is inclined by 22 to 45 degrees with respect to the vertical axis so as to surround the entire circumference formed. The present invention relates to a structure of a press die in which an outer peripheral flange surface of a press blade is lower than a press surface.

〔Example〕

In FIGS. 1 and 2, A is a press die, 1 is a base, 2 is a press surface, and 3 is a press blade. The press surface 2 presses the green sheet to give a surface pattern and increase the density. The press blade is planted in a shape that follows the outer shape of the product, and is provided so as to surround the entire circumference. The press surface 2 is a portion surrounded by the press blade 3, and has an uneven pattern. I have. The shape of the press blade 3 is the inner surface 4
Is formed substantially at right angles to the press surface 2, and the angle of the outer inclined surface 5 is inclined outward by 22 to 45 degrees with respect to the vertical axis. The reason why a specific angle is selected as the angle of the outer inclined surface 5 of the press blade 3 is based on the result of an experiment. The outer peripheral flange surface 6 of the press blade 3 is formed lower than the press surface 2. When the green sheet is pressed by the press die A, as shown in FIG. 3, a concavo-convex pattern 7 is formed by the press surface 2 and at the same time, a cutting portion 8 is formed by the press blade 3 and cut. 9 is an ear part. When the green sheet is pressed and cut by the press blade 3 and the product 10 is cut off, the product 10 is unlikely to generate blisters, burrs, and the like. That is, since the press blade 3 has a specific shape, the material escapes to the ear portion 9 and becomes the escape portion 11, so that no blisters or burrs are generated on the product 10 side. Top of ear 9
Numeral 12 is higher than the upper surface of the product 10. The reason is that since the outer peripheral flange surface 6 of the press blade 3 is formed lower than the press surface 2, a large pressure is applied to the product 10 and the
, A small pressure is applied, so that the material can escape to the ear 9, the product 10 can be cut with high accuracy, and the dimensional change after cutting is small. In particular, since the inner surface 4 of the press blade 3 is formed substantially at right angles to the press surface 2, the product
The outer peripheral portion of 10 is not compressed more than necessary and the outer peripheral portion does not have a high density, but the press blade 3 is provided so as to surround the entire circumference, so that extra material is evenly distributed from the entire circumference. The entire product 10 is compressed to a uniform density and its warpage is prevented.

〔effect〕

The structure of the press die of the present invention is the same as that of the press die structure, in which the formed green sheet (green sheet) is pressed to form a pattern on the surface. The press blade is formed by setting the inner surface angle of the press blade to be substantially perpendicular to the press surface and tilting the outer inclined surface angle of the press blade by 22 to 45 degrees with respect to the vertical axis. It is provided so as to surround the circumference, and the outer peripheral flange surface of the press blade is lower than the press surface, so that the press blade can form an uneven pattern on the green sheet and cut out the product at the same time, and blisters, burrs, etc. And the product side is less likely to have blisters and burrs, and the product has good dimensional accuracy.
The outer peripheral portion of the product is not compressed more than necessary, and the outer peripheral portion does not have a high density. Moreover, excess material is uniformly released from the entire circumference, and the entire product is compressed to a uniform density and warped. Is prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX of the embodiment shown in FIG. 1, and FIG. 3 is a product cut off from the green sheet according to the embodiment shown in FIG. It is sectional drawing which shows a state. In the figure, A is a press type, 1 is a base, 2 is a press surface,
Reference numeral 3 denotes a press blade, 4 denotes an inner side surface, 5 denotes an outer inclined surface, 6 denotes an outer peripheral flange surface of the press blade, 7 denotes an uneven pattern, 8 denotes a cut portion, 9 denotes an ear portion, and 10 denotes a product.

Claims (1)

(57) [Claims] 1. A press die structure for pressing a formed green sheet (green sheet) to form a pattern on the surface thereof, wherein a press blade is planted on the die press surface in a shape along the product outer shape. The inner surface angle of the press blade is formed substantially at right angles to the press surface, and the outer inclined surface angle of the press blade is inclined by 22 to 45 degrees with respect to the vertical axis so as to surround the press blade over the entire circumference. A press die structure in which the outer peripheral flange surface of the press blade is lower than the press surface.