JPH07205132A - Uneven surface patterning method for ceramic plate material - Google Patents

Abstract

PURPOSE:To form a uniform pattern by relatively making a compressing direction of a roll for a molding plate material uniform when a template is pressed to form an uneven pattern. CONSTITUTION:A method for patterning an uneven surface of a ceramic plate material comprises the step of reciprocatingly moving a roll 2 to an uncured ceramic plate material 6 substantially at one time to compress it when a template 7 is placed on a surface of the material 6 received on a pallet 5, compressed by the roll 2 to form an uneven pattern on the surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for patterning the surface of a ceramic plate material, and more particularly to an improvement of a method for forming a pattern by pressing a template onto the surface of an uncured ceramic plate material.

[0002]

2. Description of the Related Art Conventionally, in order to make various decorations on the surface of a ceramic plate such as a fiber reinforced cement plate, an uneven pattern may be provided. As a surface uneven patterning method of this ceramic plate material,
In some cases, the template is placed on the surface of the uncured ceramic plate material received on the pallet, and the pallet is passed between fixed rolls to be compressed to form an uneven pattern on the surface of the ceramic plate material. Compared with the case of uneven patterning by press roll compression, this patterning method by compression of the template does not cause interference between the mold and the product, so deep engraved uneven pattern can be applied, and at the same time as extrusion molding When the concavo-convex pattern is formed on the spinneret by the rotating roll, there is an advantage that the pattern can be uniformly and accurately without deviation of the pattern due to the mismatch of the take-up speed of the molding material.

[0003]

However, in the case of compressing with the above template, linear pressure is applied because the fixed compression roll is pressed against the pallet traveling in one direction for continuous compression. There is a problem that the direction is always only one direction, and as a result, it may not be possible to accurately form the uneven pattern. In particular, when there is an uneven pattern extending in the direction perpendicular to the traveling direction of the pallet, the convex portion of the template restricts the moving direction of the material of the uncured plate material, so that the material at the rear portion of this convex portion However, there is a problem in that the edges of the concave pattern may be cracked or dented as shown in FIG.

[0004]

In view of the above problems, the present invention provides a uniform pattern by averaging the compression direction of the roll relative to the molding plate material when the template is pressed to form an uneven pattern. It was made for the purpose of obtaining a method for patterning the surface irregularity of a ceramic plate material that can be attached.

[0005]

That is, in the method for patterning the surface irregularity of a ceramic plate material according to the present invention, the template 7 is placed on the surface of the uncured ceramic plate material 6 received on the pallet 5 and the roll 2 is provided.
In the case where the surface of the uncured ceramic plate material 6 is compressed by at least one reciprocation, the compression roll is compressed when the surface of the uncured ceramic plate material 6 is compressed.

[0006]

When the surface of the uncured ceramic plate material is provided with an uneven pattern, and when the template placed on the surface of the uncured ceramic plate material is compressed with a compression roll, the compression roll is at least applied to the template. Compress by reciprocating once. Therefore, the linear pressure applied by the compression rolls is forward and backward with respect to the traveling direction of the pallet, so that the flow and compression of the material in the front and rear parts of the high convex type are averaged, and the material shortage in this front and rear part Also, the occurrence of cracks is prevented.

As a means for moving the compression roll relative to the forming plate in the reciprocating direction, the compression roll is fixed relative to the pallet to be transferred in the advancing direction with respect to the same transfer line. A step of applying compression,
In the case of continuously providing the step of transferring the compression rolls at a high speed to the transfer pallet and applying the compression in the direction opposite to the traveling direction, and two transfer conveyors having the fixed compression rolls are provided in parallel. In some cases, a pallet is transferred to each conveyor and reciprocated.

[0008]

Embodiments of the present invention will be described below. FIG. 1 is a side view of an embodiment of the present invention, and FIG. 2 is a plan view of another embodiment.

[Example 1] A transfer roll 1 is provided with a compression roll 2 at a fixed position, and a conveyor 3 facing the transfer conveyor 1 and moving at a faster speed than the transfer conveyor 1 is provided. The compression rolls 4 and 4 are axially supported on the conveyor 3 to form a compression device. Then, a fiber-reinforced cement board 6 having a thickness of 2 cm obtained by extrusion is placed on the pallet 5, and a template 7 is placed on the fiber-reinforced cement board 6.
Transfer at a speed of m / sec, compress 2 compression rolls,
The conveyor 3 is moved in the direction of the arrow at a speed of 2 m / sec, and the compression roll 4 applies the same pressure in the direction opposite to the traveling direction, and the line is reciprocated once at substantially the same pressure. A concave-convex pattern was provided so that pressure was applied.

[Second Embodiment] As shown in FIG. 2, a transfer conveyor 1 having compression rolls 2A and 2B at fixed positions.
Two compressors A and 1B are provided in parallel, the transfer directions are moved in mutually opposite directions, and the pallet transfer carriage 8 is provided at the end of one transfer conveyor 1A in the transfer direction to form a compression device. Then, a fiber-reinforced cement plate 6 having a thickness of 2 cm obtained by extrusion molding and a template 7 were placed on the pallet 5 in the same manner as in Example 1, and first transferred by the transfer conveyor 1A at a speed of 1 m / sec and compressed. It is compressed by the roll 2 and then at the end portion of this conveyor 1A via the transfer carriage 8 another transfer conveyor 1
It was transferred in parallel to B and transferred in the opposite direction by one transfer conveyor 1B and compressed by the compression roll 2B under the same conditions as described above.

Comparative Example A concavo-convex pattern was formed using only one conveyor 1A in Example 2.

After performing natural curing for 6 hours after demolding, the comparative examples of Examples 1 and 2 and Comparative Example were compared and observed. As a result, in Examples 1 and 2, as shown in FIG. While the edges 9A and 9B of the 5 mm concave pattern 9 were clearly formed, the plate material obtained in the comparative example showed that the edge of the concave pattern 9 at the same portion as that of the example was in the traveling direction as shown in FIG. Arrow P)
On the other hand, there was a tendency that the thickness of the edge 9A in the rearward direction was all insufficient, and it was observed that the portion had cracks.

[0013]

As described above, according to the present invention, when an uneven pattern is formed on the surface of the uncured ceramic plate material by the template, the linear pressure applied by the compression roll is reciprocated at least once, so that Even if it is a deep uneven pattern, the flow of the material in the front and back of the mold is made uniform, and even if it is a deep engraved uneven pattern, it is possible to continuously produce a product having a clear contour.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a plan view of another embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of an essential part of a ceramics plate material obtained by the method of the present invention.

FIG. 4 is an enlarged cross-sectional view of an essential part of a ceramic plate material obtained by a method of a comparative example.

[Explanation of symbols]

 1 ... Transfer Conveyor 1A ... Transfer Conveyor 1B ... Transfer Conveyor 2 ... Compression Roll 2A ... Compression Roll 2B ... Compression Roll 3 ... Conveyor 4 ... Compression Roll 5 ... Pallet 6 ... Fiber Reinforced Cement Board 7 ... Template 8 ... Pallet Transfer Cart

Claims (1)

[Claims] 1. When a template 7 is placed on the surface of an uncured ceramic plate 6 received on a pallet 5 and compressed by a roll 2 to give an uneven pattern to the surface, the compression roll is not A method of patterning the surface irregularity of a ceramic plate material, which is characterized in that the cured ceramic plate material 6 is substantially reciprocated at least once and compressed.