JPH09216213A - Molding machine for cracked skin tile and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a cracked skin tile of large recessed and projected surface properties close to a natural stone. SOLUTION: Plastic body layers of an extrusion molded body are formed to be continuous in the vortex shape from the center of a molded body, and the extrusion molded body is dried, and then the extrusion molded body is divided on the positions away from the centers of the vortexes of the plastic body layers and along the vortex direction. Thus the divided faces form boundary faces of the plastic body layers of vortex shape by the arrangement, and cracked skin faces of large recesses and protrusions same as the vortex shape can be provided.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to extruding a plastic kneaded clay adjusted to a predetermined water content from a die having a predetermined shape, cutting the extruded molded body into a predetermined size, and then drying the molded body.
The present invention relates to a molding machine and a manufacturing method for a tile having a split surface that is the same as that obtained by splitting a natural stone on the split surface by dividing the tile.

[0002]

2. Description of the Related Art Usually, when a tile is manufactured by this type of extrusion molding, a plastic kneaded material adjusted to a predetermined water content is put into an extrusion molding machine to form a spiral blade ( The plastic kneaded clay is extruded from a die having a predetermined shape by a screw. The extruded molded body is continuous, and after being cut to a predetermined size, it is dried, divided into two, and baked to obtain two product tiles from one molded body. . Thus, the divided surface is a split surface having the same surface shape as natural stone. Therefore,
It is possible to obtain two split skin tiles from one molded body.

FIG. 6 shows a die 1 of an extruder for producing a conventional split skin tile. As shown in the figure, in the upper and lower central portions of the molding space 2 which is the extrusion opening of the die 1, a V-shaped portion is formed so that a divided surface is easily formed when the extruded molded body 3 (see FIG. 7) is divided. A protrusion 5 for forming the notch 4 is formed. This projection 5
Between the left and right inner side surfaces of the molding space 2, there are provided up and down one cutting blade 7 for cutting out an unnecessary portion of the plastic kneaded clay 6 to be extruded. This cutting blade 7
Is for cutting out unnecessary portions and at the same time forming back feet 9 on the back surface side of split skin tile 8 as a product (see FIG. 8).

The molded body 3 extruded from the die 1 is
After being cut to a predetermined size, it is dried until it has a predetermined strength. Then, as shown in FIG.
The molded body 3 is divided into two parts as shown in FIG. 8 by pressing against the character-shaped notches 4 to obtain a tile surface with a split surface 12 on the divided surfaces.

[0005]

The molded body 3 of the plastic kneaded clay 6 extruded from the die 1 of the conventional extrusion molding machine has a spiral clay layer 13 as shown in FIG. It has a layered structure. This is because the extruder has a plastic clay 6
Is formed by pushing out with a spiral blade (screw).

In the molded body 3 having such a spiral clay layer 13, when this is divided into two in the manner shown in FIG. 7, the breaking stress by the dividing blade 11 is on an imaginary line passing through the center of the spiral. It progresses in a direction approximately orthogonal to the clay layer 13 and has a regular fracture surface.
That is, the breaking stress acts so as to cross the clay layer 13 through the center of the spiral, so that the split skin surface 12 after the division is divided.
The irregularities of the are regular, and only small irregularities are obtained.

When the tile 8 having the split skin surface 12 having such a small unevenness is applied to the outer wall of a building or the like, the split skin surface 12 sometimes gives the impression that it is intentionally divided. Although it is possible to obtain the surface texture of unevenness that is quite close to that of stone, the size of the unevenness is still insufficient, and it is not possible to obtain the surface texture that can give the impression that is completely similar to natural stone.

[0008]

SUMMARY OF THE INVENTION The present invention has been improved and removed in view of the above-mentioned conventional problems, and is a molding machine and a manufacturing method capable of manufacturing split skin tiles having a large textured surface texture. Is intended to be provided.

In order to solve the above-mentioned problems, the means of claim 1 adopted in the present invention extrudes the plastic kneaded clay adjusted to a predetermined water content from the die of the molding machine and divides it into two after drying. In a molding machine for split-skin tiles that obtains a split-skin surface on the split surface, a middle ball for forming irregularities on the back side of the tile is arranged in the vertical direction of the central part of the die, and the middle ball and In the vertical direction between the left and right inner side surfaces of the die, an unnecessary portion of the extruded molded body is cut off, and a cutting blade for forming unevenness on the back surface side of the tile is provided. It is a molding machine.

[0010] The means of claim 2 adopted by the present invention is:
The plurality of moldings capable of obtaining two split skin tiles are simultaneously molded by forming a plurality of rows of middle balls in the middle portion in the left-right direction of the mouthpiece. It is a molding machine for split skin tiles.

Further, according to a third aspect of the present invention, the plastic kneaded clay adjusted to have a predetermined water content is extruded from the die by the spiral blade of the extrusion molding machine, and is divided into two after being dried. In the method for producing a split skin tile in which a split skin surface is obtained, a layer of the plastic kneaded material of the extruded formed body is continuously formed in a spiral shape from the center of the formed body, and the extruded formed body is dried. By dividing the extruded body at a position distant from the center of the spiral of the layer of the plastic kneaded material and along the spiral direction, it is possible to obtain a large uneven surface of the split surface. It is a characteristic method for manufacturing split skin tiles.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. The same reference numerals as those in the conventional case denote the same members. 1 to 3 relate to a first embodiment of the present invention. FIG. 1 is a front view of a die 14, FIG. 2 is a perspective view of a molded body 15, and FIG. 3 is a molding showing a clay layer 13. It is a front view of the body 15.

As shown in the figure, the base 1 of this embodiment is shown.
4, the middle ball 16 is arranged vertically in the center of the molding space 2, and the cutting blade 7 is arranged vertically between the middle ball 16 and the left and right inner side surfaces of the molding space 2. doing. See also 1
Protrusions 5 for forming the notches 4 for division in the molded body 15 are provided at upper and lower positions between the cutting blade 6 and the cutting blade 7.

The inner balls 16 are for forming the back feet 9 of the product tiles at the joining portions in the state where the back surfaces of the product tiles are joined. Further, the cutting blade 7 is for cutting out unnecessary portions of the extruded plastic kneaded material and at the same time forming irregularities on the back surface side of the product tile. In this case, the cutting blade 7 integrally has a horizontal cutting blade 7a for separating unnecessary portions of the excised plastic kneaded material into upper and lower parts to reduce the volume and facilitating the subsequent handling.

As shown in FIG. 2, the molded body 15 extruded from the die 14 having the above-described structure becomes a state in which the surfaces forming the back surface of the tile of the conventional molded body 3 are in contact with each other. It is possible to mold four split skin tiles from one molded body 15. In other words, the molded body 15 is composed of the two molded bodies 1 on the left and right by the middle ball 16 at the center thereof.
It is separated into 7 and 17. Each of the molded bodies 17, 17 has the same external shape as the conventional molded body 3 shown in FIG. Further, each of the molded bodies 17 and 17 is divided into two at the position of the notch 4 as shown in FIG.
Four split skin tiles are obtained from one molded body 15.

By constructing the mouthpiece 14 so that four split skin tiles are obtained from one molded body 15 as described above,
Clay layer 1 of molded body 15 extruded from the die 14
3 has a layered structure which spirally spreads from the center of the molded body 15, as shown by the alternate long and short dash line in FIG. In this layered structure, an imaginary line connecting the upper and lower cuts 4 and 4 of the molded body 3 is located away from the center of the spiral and is substantially along the direction in which the clay layer 13 is divided (the direction of the imaginary line). Become.

Therefore, the molded body 15 is replaced by the two molded bodies 1.
When the molded bodies 17 and 17 are further divided by the breaking device shown in FIG. 7 after being separated into 7 and 17, the breaking stress due to the dividing blade 11 is the clay having a weak strength as shown in FIG. Propagates along the layer 13 and the divided surface has large irregularities 18 and 19. That is,
Split skin tiles 20 and 21 are obtained in which the split skin surface of the large unevennesses 18 and 19 is the tile surface. The split skin tiles 20 on the left and right inner side surfaces of the molding space 2 of the die 14 have large concave portions 18 on the entire tile surface, and the split skin tiles 21 on the center side of the molding space 2 have large convex portions 19 on the entire tile surface.
Becomes

If the split skin surface having such a large uneven shape is used, it is possible to obtain a surface texture that is extremely close to that of natural stone, and the wall surface on which the split skin tiles 20 and 21 are applied is entirely made of natural stone. You can give the impression that it is a wall surface.

FIGS. 4 and 5 relate to a second embodiment of the present invention, and FIG. 4 is a front view showing the mouthpiece 22, and FIG.
Is a molded body 2 of plastic kneaded material extruded through the die 22
3 is shown. While the die 22 according to the second embodiment is one in which the die 14 of the first embodiment simultaneously forms two molded bodies 17 for obtaining two split skin tiles 20 and 21, It is designed such that four molded products for obtaining two split skin tiles are molded at the same time.

The mouthpiece 22 divides the molding space 24 into six sections in the left-right direction, and disposes a cutting blade 7 and a horizontal cutting blade 7a for cutting off unnecessary portions of the plastic kneaded material at the boundary portions on the left and right ends. The middle balls 16 are arranged at the three boundary portions of the remaining central portion. Further, protrusions 26 for forming the recesses 25 for division are provided at the upper and lower central positions of the remaining four partition portions excluding the partition portions on the left and right ends on which unnecessary plastic kneaded material is extruded.

The molded body 23 extruded from the die 22 thus constructed is as shown in FIG.
It is possible to obtain a total of eight split surface tiles from one molded body 23 by dividing the molded body 25 into two at the position of the recess 25 by dividing into four molded bodies 25 at the through-hole portion formed by. It is possible.

In the split skin tile according to the second embodiment, since the molded body 23 has the spiral clay layer 13 as shown by the one-dot chain line in FIG. 5, a virtual division line connecting the upper and lower concave portions 25 is formed. Will all be located away from the center of the spiral. Moreover, at the central portion in the vertical direction on the imaginary line of division, the breaking stress at the time of division is propagated along the spiral clay layer 13, and the split surface having a considerably large unevenness as compared with the conventional case. Can be formed. Other configurations and operational effects are basically the same as in the case of the first embodiment described above.

[0023]

As described above, in the present invention,
Since the layered structure of the plastic kneaded material of the molded body extruded from the molding machine has a spiral shape and the molded body is divided at a position away from the center of the spiral, the breaking stress is the clay of the plastic kneaded material. It propagates through the layer of, and the boundary surface of this clay layer becomes a split surface. Therefore, in the split skin tile thus obtained, the split skin surface of the surface becomes an uneven surface along the spiral clay layer, and an extremely large uneven surface is obtained, and a surface shape closer to natural stone is obtained. It is possible to build walls. In addition, the molding machine is capable of simultaneously molding two or more moldings from which two split skin tiles are obtained, and is excellent in production efficiency.

[Brief description of drawings]

FIG. 1 is a front view of a die of an extrusion molding machine according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a molded body according to the first embodiment of the present invention.

FIG. 3 is a front view showing a layer structure and a split skin surface of the plastic kneaded clay in the molded body according to the first embodiment of the present invention.

FIG. 4 is a front view of a die of an extruder according to a second embodiment of the present invention.

FIG. 5 is a front view showing a layered structure and a split skin surface of a plastic kneaded clay in a molded body according to a second embodiment of the present invention.

FIG. 6 is a front view showing a mouthpiece of a conventional extruder.

FIG. 7 is a perspective view showing a conventional dividing device for a molded body.

FIG. 8 is a perspective view showing a conventional split skin tile.

FIG. 9 is a front view showing a layered structure of a plastic kneaded clay in a conventional molded body.

[Explanation of symbols]

2 ... Molding space 4 ... Notch 7 ... Cutting blade 7a ... Horizontal cutting blade 9 ... Back foot 14 ... Clasp 15 ... Molded body 16 ... Medium ball 17 ... Molded body 18 ... Recessed surface of concave portion 19 ... Broken surface of convex portion 20 ... Split skin tile 21 ... Split skin tile 22 ... Clasp 23 ... Molded body

Claims (3)

[Claims] 1. A molding machine for a split skin tile in which a plastic kneaded clay adjusted to a predetermined water content is extruded from a die of a molding machine, and is divided into two after drying to obtain a split skin surface on a divided surface. A center ball for forming irregularities on the back side of the tile is arranged in the vertical direction of the central portion of the base, and the unnecessary portion of the molded body extruded in the vertical direction between the center ball and the left and right inner side surfaces of the base. A molding machine for split-skin tiles, which is characterized in that a cutting blade is provided for cutting off the surface and forming irregularities on the back surface side of the tile. 2. A plurality of molded bodies capable of obtaining two split skin tiles are simultaneously molded by forming a plurality of rows of middle balls in the lateral middle portion of the die. Item 2. A molding machine for split-skin tiles according to Item 1. 3. A split-skin tile in which a plastic kneaded clay adjusted to a predetermined water content is extruded from a spinneret by a spiral blade of an extrusion molding machine, and is divided into two after drying to obtain a split-skinned surface on a split surface. In the manufacturing method of, the layer of the plastic kneaded material of the extruded molded body is made to continue spirally from the center of the molded body, and after the extrusion molded body is dried, from the center of the spiral of the layer of the plastic kneaded material. A method for manufacturing a split skin tile, characterized in that a split skin surface having large unevenness is obtained on the split surface by splitting the extruded body at a distant position and a portion along the spiral direction.