JPH1086118A - Curved tile molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable demolding without crushing an uneven pattern, to attempt the use of existing equipment, and to improve dimensional system by installing a movable frame body which controls the separation from the surface of a longitudinal piece which forms the uneven pattern in a mold frame. SOLUTION: In a step difference space part 8 which is pit-formed in a mold frame 2, a movable frame body 9 is arranged freely movably in the cross direction and connected with a cylinder 10 for controlling movement. In this way, in order to form an uneven pattern on the surface of the longitudinal piece of a curved tile, the front 9a of the frame body 9 is advance-controlled to be the same surface with an inner surface 7a during compression molding and retreat-controlled to be separated vertically during demolding. The rear surface 9b of the frame body 9 is formed slantingly, and a block body 12 for regulating the movement of the frame body 9 is installed between the rear surface 9a and a vertical surface 8a. This is vertically controlled by a cylinder 13 in the space part 8 restricts the retreat of the frame body 9 against molding pressure during compression molding, and makes free the movement of the frame body 9 in the lateral direction during demolding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming a curved tile in which an uneven pattern is formed on the surface.

[0002]

2. Description of the Related Art As shown in FIG. 7, a curved tile T conventionally used for a corner of a wall in a building has a horizontal piece T as shown in FIG.
a and a vertical piece Tb are formed in a continuous L-shape in cross section, and a decorative uneven pattern Td is formed on the surface Tc side thereof.

[0003] As a device for obtaining a bent tile T by compression molding of a powder material, as shown in FIG.
1, a fixed lower mold A4 having a molding surface A3 for forming a concavo-convex pattern Td on the surface Tc of the vertical piece Tb and the horizontal piece Ta adjacent to the vertical piece Tb, and a horizontal piece other than the above. T
A movable lower mold A6 having a molding surface A5 forming an uneven pattern Td on a surface Tc occupying most of the area a, and an upper mold A2, a fixed lower mold A4, and a mold frame A7 surrounding the movable lower mold A6. I have.

However, in the above molding apparatus, the horizontal piece Ta and the vertical piece Tb are in a right angle state, and the uneven pattern Td is formed by the fixed lower mold A4 and the movable lower mold A6. At the time of molding, the removal of the molded article from the fixed lower mold A4 and the movable lower mold A6 becomes worse due to the expansion phenomenon of the molded article, and the molded article is perpendicular to one of the surfaces Tc of the horizontal piece Ta and the vertical piece Tb. Has a defect that the uneven pattern Td on one surface Tc of the horizontal piece Ta and the vertical piece Tb is crushed when the support is separated by suction.

[0005] Japanese Patent Application Laid-Open No. 63-5904 discloses a molding apparatus for reducing the collapse of the uneven pattern Td.
However, as shown in FIG. 6, the molding apparatus disclosed in Japanese Patent Application Laid-Open Publication No. H10-26095 has a molding surface that matches the shape of the curved tile T on the surface Tc side where the uneven pattern Td is formed. When the upper mold B2 provided with B1 is separated from the molded body at the time of demolding, the upper mold B2 is moved obliquely upward by the elastic force of the spring B3 applied in the horizontal direction and the upward movement of the upper mold B2 itself. Has a drawback that only an extremely shallow uneven pattern Td can be formed due to the collapse of the uneven pattern Td depending on the height difference. Further, since the upper surface of the mold frame B4 is formed as a slope, a dedicated diagonally moving powder mass is used. B5 is required, and the powder mass B5 is moved obliquely.
There was a disadvantage that the dimensional accuracy after firing was deteriorated.

[0006]

SUMMARY OF THE INVENTION The present invention makes it possible to form a concavo-convex pattern which is not restricted at all by the height difference between the concavities and convexities, and it is possible to remove the mold without crushing the concavo-convex pattern. The present invention aims to provide a curved tile forming apparatus for obtaining a curved tile which achieves good dimensional accuracy while using the same.

[0007]

SUMMARY OF THE INVENTION The present invention comprises an upper mold, a lower mold, and a mold frame based on the above-mentioned conventional technology in view of problems such as collapse of an uneven pattern and deterioration of dimensional accuracy after firing. In order to solve the above-mentioned drawbacks, a mold frame is provided with a bending tile molding apparatus which is provided with a movable frame body controlled to be detached from the vertical piece surface on which the uneven pattern of the curved tile to be formed is formed. It was done.

The upper die in the forming apparatus is provided with a horizontal piece uneven forming surface for forming an uneven pattern on the horizontal piece surface of the curved tile, and is controlled in a vertical direction from the horizontal piece surface of the formed curved tile. Things.

[0009] The lower mold is provided with a molding surface of the back surface of the horizontal piece and the vertical piece of the curved tile and the end face of the vertical piece, and the upper surface of the mold frame has a horizontal plane.

The mold frame surrounds the upper mold and the lower mold, and is provided with a vertical piece uneven forming surface for forming an uneven pattern on the vertical piece surface of the curved tile. A movable frame body controlled to be released in the vertical direction is provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. A curved tile forming apparatus 1 according to the present invention has an L-shaped cross section in which a horizontal piece Ta and a vertical piece Tb are continuous. Then, on the surface Tc side of the horizontal piece Ta and the vertical piece Tb, for example, a curved tile T for forming a stone-like uneven pattern Td is compression-molded from a powder material, and the mold frame 2 and the upper mold are formed. 3, the lower mold 4 constitutes a basic form.

The mold frame 2 is connected to a floating cylinder 5 and is controlled to move up and down.
Has a horizontal plane so as to horizontally move the powder mass 6 for supplying the powder raw material.

The upper and lower dies 3 and 4 for compressing and molding the powdery raw material are inserted into the mold frame 2 to form through-holes 7 vertically opened so as to surround them with the mold frame 2. The through hole 7 has a square hole shape corresponding to the outer shape of the horizontal piece Ta of the curved tile T.

On one side of the through hole 7, that is, at a position facing the surface Tc of the other vertical piece Tb of the curved tile T to be formed, the lower side of the inner surface 7 a is connected to the through hole 7. A stepped space 8 is depressed and formed in the mold frame 2 so that a movable frame 9 is disposed in the stepped space 8 so as to be movable in the lateral direction. The cylinder 10 is connected.

The front surface 9a of the movable frame 9 is formed as a vertical piece uneven forming surface 11 for forming an uneven pattern Td on the surface Tc of the vertical piece Tb of the curved tile T, and the inner surface on one side of the through hole 7 during compression molding. Forward control is performed so as to be flush with 7a, and at the time of demolding, retreat control is performed so as to vertically separate from the surface Tc of the vertical piece Tb of the curved tile T.

Further, the rear surface 9b of the movable frame 9 is formed in an inclined shape, while the rear surface 9b of the movable frame 9 and the vertical surface 8a of the step space 8 are provided with the movable frame 9 A block body 12 for regulating movement is provided, and the block body 12 is
The vertical movement of the movable frame 9 is controlled by the cylinder 13 and the contact surface 12 of the block 12 is opposed to the rear surface 9b of the movable frame 9.
a is formed in the shape of a reverse inclined surface with respect to the rear surface 9b of the movable frame 9, and the block 12 prevents the movable frame 9 from retreating against the molding pressure during compression molding. The movement of the movable frame 9 in the lateral direction is free.

The means for moving the movable frame 9 is as follows.
The present invention is not limited to the above embodiment, and includes, for example, a link mechanism,
It is also possible to use a drive mechanism such as a cam mechanism or a screw mechanism.

The upper die 3 is connected to a molding pressurizing cylinder (not shown) and is controlled to move up and down. The lower surface 3a of the upper die 3 has an uneven pattern on the surface Tc of the horizontal piece Ta of the curved tile T. It forms a horizontal piece uneven forming surface 14 for forming Td.

The lower die 4 is composed of a fixed lower die 15 and a movable lower die 16, and the fixed lower die 15 is formed in a plate shape having the same cross-sectional shape as the vertical piece Tb of the bent tile T, and has an upper end surface 15a. The fixed lower die 15 is formed into a through hole 7 of the mold frame 2 from a lower die base 18 which is fixedly provided, which is formed as a molding surface 17 of a lower end surface which is a back surface of the vertical piece Tb of the bent tile T. It is provided upright so as to be inserted along the inner surface 7a on one side of the through hole 7 in which the step space portion 8 is formed.

The movable lower die 16 is formed in a prismatic shape, and its upper end surface 16a is formed as a lower surface forming surface 19 which is the back surface of the horizontal piece Ta of the curved tile T. The cylinders 20 are connected to each other and are controlled to move up and down while being inserted into the through holes 7 of the mold frame 2.

Next, the operation of the bent tile forming apparatus according to the present invention will be described. First, the cylinder 13 is actuated to raise the block body 12, and the contact surface 12 of the block body 12 is raised.
A predetermined amount of gap is formed between the movable frame 9 and the front surface 9a of the movable frame 9, so that the movable frame 9 can be freely moved in the lateral direction.

Thereafter, when the movable frame 9 is retracted by operating the cylinder 10, the vertical piece uneven forming surface 11 on the front surface 9a of the movable frame 9 is separated from the side surface 15b of the fixed lower die 15 by a predetermined dimension. State.

Next, the cylinder 5 is operated to raise the mold frame 2 until the upper end surface 15a of the fixed lower die 15 is located above the bottom surface 8b of the step space 8 by a predetermined amount, and the cylinder 20 is moved down. The movable lower die 16 is lowered until the movable lower die 16 is positioned below the upper surface 2a of the mold frame 2 by a predetermined amount, and the cylinder 10 is further operated to operate the front surface 9a of the movable frame body 9.
Is moved forward until it comes into contact with the side surface 15b of the fixed lower die 15, and in this state, the cylinder 13 is operated to lower the block body 12, and the contact surface 12a of the block body 12
The movable frame 9 is restrained and fixed by contacting the movable frame 9b.

Then, the powder mass 6 containing the powder raw material is moved on the upper surface 2a of the mold frame 2 to fill the cavity 21 formed by the mold frame 2 and the lower mold 4 with the powder raw material.

Next, the mold frame 2 and the movable lower mold 16 are brought into a floating state, the upper mold 3 is lowered, and the powder material in the cavity 21 is compression-molded.

After molding, the cylinder 13 is actuated to raise the block body 12 to release the restrained state of the movable frame 9, and then the cylinder 10 is actuated to move the movable frame 9 backward. The vertical piece uneven forming surface 11 which is the front surface 9a of 9 is vertically separated from the surface Tc of the vertical piece Tb of the curved tile T which is a molded product.

Further, the cylinder 5 is operated to lower the mold frame 2 so as to be in the initial state, and at the same time, the upper mold 3 is raised, and the horizontal piece uneven forming surface 14 of the lower surface 3a of the upper mold 3 is bent to form a tile. It is separated from the surface Tc of the horizontal piece Ta of T,
The bent tile T is suction-supported by the transfer machine having the suction means, and is transferred to the next step.

The movable frame 9 is fixed to the block 12
Is performed, the binding force of the movable frame 9 can be sufficiently increased with respect to the pressure during compression molding.
The size of the cylinder 10 for moving the cylinder can be reduced.

[0029]

According to the present invention, the upper half 3, the lower half 4, and the mold frame 2 surrounding the upper half 3, the lower half 4 and the vertical half T are used.
b is an apparatus for compression-molding a curved tile T having an L-shaped cross section from a powdery raw material, wherein the upper die 3 forms an uneven pattern Td on the surface Tc of the horizontal piece Ta of the curved tile T. The surface 14 is provided, and the detachment is controlled in the vertical direction from the horizontal piece Ta surface Tc of the formed curved tile T,
The lower mold 4 is provided with a molding surface 17 on the back surface of the horizontal piece Ta and the vertical piece Tb of the curved tile T, and the end face of the vertical piece Tb, and the mold frame 2 has an upper surface 2a formed in a horizontal plane. 2 is provided with a vertical piece uneven forming surface 11 for forming an uneven pattern Td on the vertical piece Tb surface Tc of the curved tile T, and is controlled to be vertically separated from the vertical piece Tb surface Tc of the formed curved tile T. Since the movable frame 9 is provided, the uneven pattern Td can be formed on the surface Tc of the horizontal piece Ta and the vertical piece Tb of the curved tile T, and the upper die 3 that forms the uneven pattern Td.
Since the movable frame 9 of the mold frame 2 can be detached from each surface Tc in the vertical direction, when the bent tile T is released after the completion of the molding, the uneven pattern Td, the vertical uneven molding surface 11,
Since the mold can be removed without contacting the lateral uneven forming surface 14, the uneven pattern Td can be reliably formed, and the detachable dimension of the movable frame 9 to be detached from the curved tile T is not limited at all. Therefore, the height difference of the unevenness in the unevenness pattern Td can be increased.

Further, since the upper surface 2a of the mold frame 2 is formed in a horizontal plane, the powder mass 6 used for a general plate-like tile is formed.
In addition, since the powder mass 6 is horizontally moved, the packing density of the powder raw material can be made uniform, so that a curved tile T having good dimensional accuracy can be formed, and its practical effect is extremely large. is there.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bent tile forming apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing a part of a molding process by the molding apparatus.

FIG. 3 is a cross-sectional view showing another part of the molding process by the molding apparatus.

FIG. 4 is a cross-sectional view showing another part of the molding process by the molding apparatus.

FIG. 5 is a sectional view showing a conventional molding apparatus.

FIG. 6 is a sectional view showing another conventional molding apparatus.

FIG. 7 is a perspective view of a curved tile.

[Explanation of symbols]

 2 Mold frame 2a Upper surface 3 Upper die 4 Lower die 9 Movable frame 11 Vertical uneven surface forming surface 14 Horizontal uneven surface forming surface 17 Molding surface

Claims (1)

[Claims] 1. An apparatus for compression-molding a curved tile having an L-shaped cross section, in which a horizontal piece and a vertical piece are continuous, from a powder raw material by an upper mold, a lower mold, and a mold frame surrounding them. The mold is provided with a horizontal piece uneven forming surface that forms an uneven pattern on the horizontal piece surface of the curved tile, and is controlled to be released vertically from the horizontal piece surface of the formed curved tile, and the lower mold is a horizontal piece of the curved tile and The back surface of the vertical piece, and the molding surface of the end face of the vertical piece are provided, the mold frame has an upper surface formed in a horizontal plane, and the mold frame has a vertical piece that forms an uneven pattern on the surface of the vertical piece of the curved tile. A curved tile forming apparatus, comprising: an uneven molding surface; and a movable frame body which is controlled to be vertically separated from a surface of a vertical piece of the formed curved tile.