JPH0592408A - Patterning method of deeply-engraved pattern and its device for brick and tile of building material for pottery industry - Google Patents

Abstract

PURPOSE:To pattern a deeply-engraved pattern of a brick and tile to an uncured material without impropriety at the time of pressing and formation of building materials for pottery industry. CONSTITUTION:At the time of pressing of an uncured material W for building materials for pottery industry mounted on a bottom force 12 by a top force 2, air which has remained within a patterning recessed part 2a of the force 2 is discharged through the top of the recessed part 2a comprised of a gas permeability plate material 7. Then at the time of demolding of the uncured material from the top force 2, the uncured material is extruded by air pressure by feeding compressed air through the top. With that construction, laborsaving in manufacturing of a product having a deeply-engraved pattern can be performed and a product price can be made inexpensive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep engraving patterning method and apparatus for bricks and tiles of ceramic building materials.

[0002]

2. Description of the Related Art As a type of building material, ceramic building materials such as bricks and tiles with patterns are used.
A conventional manufacturing method will be described with reference to FIG. 4, in which a patterning recess 2a ...
The upper mold 2 formed with is fixed and the lower mold 4 is fixed to the base 3, and then the uncured material w of the ceramic building material is placed on the upper surface of the lower mold 4, and the pressing body is pressed. By lowering 1, the uncured material w is compression-molded.

[0003]

In the conventional method described above, there is no escape of air in the patterning concave portions 2a ... While the uncured material w is pressed by the upper mold 2. Since the air remains in a compressed state in the recessed portions 2a ..., cracks and cracks due to the air may occur in the uncured material w after being molded, and the uncured material w is molded. There is an inconvenience that a large draft is required because it is difficult to separate from the upper mold 2 at the time of punching, which inevitably limits the shape of the recessed portion 2a. It is impossible to create a sharp groove on the side wall and a deep groove pattern.

Therefore, when such patterning is performed, a semi-finished product w1 having a large groove pattern and a shallow groove pattern as shown in FIG. 5 is first manufactured by press molding, and then this is finished. The cutting is done by an NC processing machine as shown by the dotted line, and the labor and cost required for this are extremely large. Semi-finished product by press molding w
The maximum depth d of the groove 1 is 3 mm. Considering this draft, the groove top width b1 is 12 mm and the groove bottom width b2 is 8 mm. It is an object of the present invention to provide a deep engraving patterning method and apparatus for bricks and tiles of ceramic building materials that can solve such problems.

[0005]

The apparatus according to the present invention comprises a box body, a reinforcing plate, a gas permeable plate body and an upper die which are fixed in this order to the lower surface of the pressing body of the press machine. Forming a concave portion for patterning and having no concave top surface, the air permeable plate body does not allow air to flow vertically through the through hole, and the reinforcing plate supports the air permeable plate body. Air shall not flow vertically through the through hole, and the internal space of the box shall be communicated with the inside of the recess through the through holes of the reinforcing plate and the air permeable plate. It is characterized in that the supply and discharge of air in the space are controlled by the air supply and discharge means.

When the upper mold of the above apparatus is lowered to press-mold the uncured material of the ceramic building material, the air remaining in the recess of the upper mold is permeable to the air permeable plate member from the top surface of the recess. Discharge through the plate and box. This prevents the uncured material from cracking or cracking due to the air in the recess. Further, when the uncured material is removed from the upper mold, air is supplied from the top surface of the recess into the recess by supplying outside air into the internal space of the box. As a result, the uncured material after molding is forcibly extruded from the recess by the air pressure.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an apparatus according to the present invention, in which the substantially same parts as those in the conventional example are designated by the same reference numerals. On the lower surface of the pressing body 1, a box body 5, a reinforcing plate 6, an air permeable plate body 7 and an upper mold 2 are provided.
Are fixed in this order. At this time, the upper die 2 has no top surface of the recess 2a. Further, the air permeable plate body 7 is configured such that air flows in the vertical direction through the through holes, and specifically, is made of a wire mesh or cloth-like felt woven with a wire having a diameter of 1 μm to 10 μm. The reinforcing plate 6 is supposed to support the air-permeable plate body 7 and is provided with a large number of through holes 6a for allowing air to flow in the vertical direction. The material is a stainless steel plate. It is preferable to use (thickness of about 3 mm). Further, the box body 5 has its inner space 5a communicated with the inner side of the recessed portions 2a ... Through the through holes of the reinforcing plate 6 and the air permeable plate body 7. A large number of through holes 5b ... Which communicate with the holes 6a.

Reference numeral 8 denotes an air supply / discharge means for controlling the supply / discharge of air in the internal space 5a of the box body 5, which is a compressor device 9 for producing compressed air and the internal space 5a from this device. A control valve 10 for supplying compressed air to or discharging the air in the internal space 5a.

Numeral 11 is a conveyor roller for moving the tray 12 from the other place to the upper surface of the base 3, and those positioned on both sides of the base 3 are supported by springs 13 so as to be vertically movable. . The tray 12 is composed of a flat plate 12a on which the uncured material w is placed, and leg members 2b ... Fixed at both ends thereof. In this example, the base 3 and the tray 12 are made to function as the lower mold 4.

The deep engraving of bricks and tiles of ceramic building materials using the apparatus of the above embodiment is carried out as follows. That is, the uncured material w used as a substrate is placed on the tray 12, and the tray 12 is positioned directly above the base 3 via the conveyor rollers 11. Next, the pressing body 1 is lowered to press the uncured material w. As a result, the uncured material w will be
.. and the like are patterned into bricks or tiles, while the air in the recesses 2a ... Is pushed by the uncured material w to form the top surface of the air-permeable plate 7 and the reinforcing plate 6 Through holes 6a ... And through holes 5b of the box body 5 ...
Through the control valve 10 and is discharged to the atmosphere through the control valve 10, so that the uncured material w is not hindered by the air and the recessed portions 2a ...
・ It is closely attached to the inner top surface for complete patterning. After that, the pressing body 1 is raised and the uncured material w is die-cut. The control valve 10 is appropriately operated to supply the compressed air from the compressor device 9 into the internal space 5a of the box body 5. As a result, this air passes through the through hole 5b of the box 5 ...
.., through the through holes 6a of the reinforcing plate 6, and through the air permeable plate 7, the recessed portion 2a ... reaches the top surface and the recessed portion 2a.
Since the uncured material w in the inside is pressed and pushed out from the upper mold 2, the uncured material w is easily separated from the upper mold 2 even if the recess 2a has a small draft. Will be done.

In the above embodiment, the reinforcing plate 6 may be made of a strong metal mesh, and if a vacuum pump is provided to make the internal space 5a of the box 5 a negative pressure, the uncured material is not formed. The depression 2a that presses w with the upper mold 2.
The air inside can be eliminated more completely.

When the present invention was carried out, a product having a good deep engraving pattern as shown in FIGS. 2 and 3 was obtained. The dimensions of each part in the figure are as follows: the horizontal length B is 910 mm, the vertical length L is 455 mm, the thickness t is 18 mm, and the groove upper width b1 is 10 m.
m, the bottom width b2 of the groove is 8 mm, and the groove depth d is 6 mm.

[0013]

According to the present invention described above, since the air in the recess is eliminated, the uncured material can be prevented from cracking or cracking, and the uncured material is pushed out from the upper mold by air pressure, so that the recess is removed. Even if the gradient is slight, it is possible to easily perform die cutting, which makes it possible to form a deep engraved pattern with ridged groove walls on the uncured material only by press molding, and a deep engraved product The manufacturing labor of the product is reduced and the product can be made inexpensive.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an apparatus according to the present invention.

FIG. 2 is a plan view of a product manufactured by implementing the present invention.

FIG. 3 is a cross-sectional view of a product manufactured by carrying out the present invention.

FIG. 4 is a diagram for explaining a conventional example.

FIG. 5 is a diagram of a product according to a conventional example.

[Explanation of symbols]

 w uncured material 2 upper mold 2a recess 4 lower mold 5 box 5a internal space 5b through hole 6 reinforcing plate 6a through hole 7 air permeable plate 8 air supply / discharge means

Claims (2)

[Claims] 1. When the uncured material of the ceramic building material placed on the lower mold is press-molded by the upper mold, the air remaining in the patterning concave part of the upper mold is a recessed portion formed of a gas permeable plate. Brick of ceramic building material, characterized in that it is discharged from the top surface, and when the uncured material is punched out from the upper mold, compressed air is supplied from the top surface of the recessed portion to push out the uncured material by air pressure. And deep engraving patterning method for tiles. 2. A box body, a reinforcing plate, an air permeable plate body and an upper die are fixed in this order to the lower surface of the pressing body of the pressing device, and
The mold is to have a concave part for patterning and does not have a top surface of the concave part, the air-permeable plate is assumed to allow air to flow vertically through the through hole, and the reinforcing plate is the air-permeable plate. It is assumed that air is circulated in the vertical direction through the through holes while supporting it, and that the internal space of the box body communicates with the inside of the recessed portion through the through holes of the reinforcing plate and the air permeable plate body. In addition to the eggplant, the deep air engraving device for ceramic building materials such as bricks and tiles is characterized in that the air supply and discharge in the internal space are controlled by the air supply and discharge means.