JPH06315927A - Method for providing recessed and projected pattern to surface of ceramic planar material - Google Patents

Abstract

PURPOSE:To surely and accurately provide a recessed and projected pattern to a surface of an uncured ceramic planar material even if it has a large depth and to provide the recessed and projected pattern with a high productivity. CONSTITUTION:A ceramic planar material 1 extruded into a planar form is received by a pallet 3. The pallet 3 is fed at a speed synchronous with an extruding speed. In the feeding process, a planar die 5 having a recessed and projected pattern on its surface is abutted on the surface of the ceramic planar material 1, and the planar die 5 is pressed down against the surface by rolls 6...6 from the rear surface thereof with gradually increasing linear pressure, whereby the recessed and projected pattern is provided to the surface of the ceramic planar material 1 and, simultaneously, a board thickness is adjusted. By using the planar die 5, a deep and sharp recessed and projected pattern with a high linearity is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uneven patterning method for the surface of a ceramic plate material.

[0002]

2. Description of the Related Art Conventionally, an inorganic plate material formed of fiber reinforced cement or the like has been widely used as a wall plate. If this outer wall plate material is left as it is, the ground color is white gray ~
In addition to the black-grey achromatic color, if it is just a flat plate, there is a problem that the exterior wallboard is poor in design. Therefore, various uneven patterns are attached to the surface to enhance the decorativeness.

By the way, as means for imparting an uneven pattern to the surface of the ceramic wall plate, an uncured molded product formed by extrusion molding or the like is supplied to a press board to press the uneven surface pattern one by one and at the same time, to obtain a plate thickness. In order to adjust the surface of the uncured molded plate material, a roll press method is used to add an uneven pattern to the surface of the uncured molded plate material or an extrusion molding method. It is known how to do it.

[0004]

[Problems of the prior art] However, in the above-mentioned patterning method, the pressing method has general versatility that can be applied to any forming method regardless of the type of the manufacturing method of the ceramic plate material.
Processing becomes a batch system for each piece, productivity is poor,
In addition, when a deep uneven pattern is added, air is trapped inside the concave surface of the mold, which makes it impossible to form a deep and sharp uneven pattern, or because the trapped air impedes the linearity of the uneven pattern, brick-like joints, etc. There was a drawback that the uneven pattern could not be formed accurately.

The following roll pressing method is convenient in terms of continuous productivity, but when a deep uneven pattern is provided, the convex portion of the mold interferes with the concave surface of the molding plate to destroy the uneven pattern. However, there is a problem that it is not possible to attach a too deep uneven pattern.

[0006] The method of simultaneously pressing in the third forming die has the advantage of good formability because it is pressed in the die, but basically it has an uneven pattern that is too deep like the roll pressing method. In addition to the difficulty, it requires a complex structure for the die, which is very expensive when producing a large number of different types of uneven patterns.

[0007]

In view of the above problems, the present invention is capable of reliably and accurately applying an uneven pattern to the surface of an uncured ceramic plate material even if it has a deep uneven pattern. In addition, the object of the present invention is to provide a method for forming an uneven pattern on the surface of a ceramics plate material, which can form an uneven pattern with good productivity.

[0008]

Means for Solving the Problems That is, the method for patterning the surface of a ceramic plate material according to the present invention is such that a ceramic plate material extruded into a plate shape is received on a pallet, and the pallet is synchronized with the extrusion speed. In the transfer process, a plate-shaped mold having a surface uneven pattern mold is brought into contact with the surface of the ceramic-based plate material in the transfer process,
A linear pressure is gradually increased and pressed from the back surface of the plate-shaped die by a roll to form a concavo-convex pattern on the surface of the ceramic plate material and adjust the plate thickness.

[0009]

In the method of the present invention, since the uncured ceramic plate material is extruded and received by the pallet and transferred, deformation after shaping is prevented. During the transfer process using this pallet, a plate-shaped die is brought into contact with the surface of the ceramic plate material, and the linear pressure is gradually increased and pressed by the roll from the back surface of the plate-shaped die. The air present between the surface and the surface of the ceramic plate is gradually exhausted and finally has little effect, and even if it is a deep uneven pattern, it is formed with good linearity without trapping air. At this time, the plate pressure of the ceramic plate material is also regulated by the press pressure.
Further, at the time of releasing the mold, the mold can be released from the surface of the ceramic-type plate in a state of being almost horizontal, so that even a deep uneven pattern can be attached without causing interference.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a side view showing an apparatus for carrying out the method of the present invention, and FIG. 2 is a front view of a plate-shaped mold used in the method of the present invention.

Example 1 A plate-like body 1 having a thickness of 10 mm and a width of 45 cm was extruded by an extrusion molding device 2 by blending a fiber reinforced cement, and immediately after being discharged from a molding die 2A, received by a pallet 3, The pallet 3 was transferred by the roll conveyor 4 at a speed synchronized with the extrusion speed, and in the transfer process, the plate-shaped mold 5 having the surface uneven pattern 5A shown in FIG. 2 was brought into contact. The uneven pattern of the plate-shaped mold 5 had a brickwork-like joint pattern, and the uneven difference of the uneven pattern was 4 mm.

Then, the rolls 6 ... 6 are brought into contact with the back surface 5B of the plate-shaped mold 5 and the linear pressure of each roll 6 ... 6 is adjusted so as to be gradually increased and pressed to form an uneven pattern on the surface of the plate-shaped body 1. At the same time, it was molded so that the plate thickness was 9 mm. Reference numeral 7 in the drawing denotes a backup plate abutted to disperse the pressure of the rolls 6 ... 6 and is inserted as necessary.
After that, the plate-shaped body 1 having an uneven pattern on the surface was cut into pallets, transferred to a curing step, and cured by curing.

Example 2 As shown in FIG. 3, a plate material having an uneven surface pattern was formed in the same manner as in Example 1 except that a caterpillar conveyor 4A was used as a conveyor for transferring the pallet 3. In FIG. 3, 4A 'indicates a support bed of the caterpillar conveyor 4A.

[Embodiment 3] As shown in FIG. 4, as a conveyor for transferring pallets 3, a plate material having a surface uneven pattern is used in the same manner as in Embodiment 1 except that a moving platen 4B having a pallet delivery function is used. Formed. In FIG. 4, 4B 'indicates a cylinder device for moving the moving platen 4B up and down.

[Comparative Example] As a comparative example, a brick pattern-like joint pattern having an unevenness difference of 4 mm was applied by a roll press, and thereafter, the plate-shaped body was cured by curing in the same manner as in the above-mentioned examples.

Observation of the surface irregularities of the examples and comparative examples showed that the examples had deep and sharp concave and convex patterns with good linearity, but the comparative example had a rotation of the press roll. It was observed that an abutting surface due to interference was formed on the concave joint portion in the direction parallel to the axis, and the groove was lacking in sharpness.

[0017]

As described above, according to the method of the present invention, a plate-shaped die is used when the surface of the ceramic plate is provided with an uneven pattern, and the die is gradually pressure-welded over multiple stages. , The intervening air in the pressure contact process is discharged without difficulty, and the harmful effects caused by the air entrapment are surely prevented, and the chipping due to the interference of the concave-convex type can be prevented even at the time of mold release, and the linearity is deep and sharp. It becomes possible to add an uneven pattern. Furthermore, when carrying out the method of the present invention, it is sufficient to feed the plate-shaped mold onto the conventional transfer device, and therefore, it is easy to carry out, and it is possible to continuously and easily manufacture the ceramic-based plate material having the uneven pattern. It has the effect that it becomes possible.

[Brief description of drawings]

1 is a side view of an apparatus for carrying out the method of the present invention.

FIG. 2 is a front view of a plate-shaped mold used in the method of the present invention.

FIG. 3 is a side view of another implementation device.

FIG. 4 is a side view of still another implementation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Plate-shaped body 2 ... Extrusion molding apparatus 2A ... Molding die 3 ... Pallet 4 ... Roll conveyor 5 ... Plate type 5A ... Surface uneven pattern type 5B ... Back surface 6 ... Roll 7 ... Backup plate

Claims (1)

[Claims] 1. A ceramic-based plate material extruded into a plate shape is received on a pallet, and the pallet is transferred at a speed synchronized with an extrusion speed, and in the transfer process, the surface of the ceramic-based plate material has an uneven surface pattern. A ceramic system in which a plate-shaped die is abutted and linear pressure is gradually increased from the back surface of the plate-shaped die by a roll to press it to form an uneven pattern on the surface of the ceramic-based plate material and to adjust the plate thickness. A method for patterning the surface of a plate material.