JP3303204B2 - Molding machine and production method for split skin tile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for extruding a plastic clay adjusted to a predetermined moisture content from a die having a predetermined shape, cutting the extruded compact into predetermined dimensions, and then drying the molded product.
The present invention relates to a tile forming machine and a method for manufacturing a tile having the same flat surface as that obtained by splitting natural stone on a split surface by dividing the split surface.

[0002]

2. Description of the Related Art Usually, when a tile is manufactured by this type of extrusion, a plastic clay adjusted to a predetermined moisture content is put into an extruder, and spiral blades of the extruder are used. The plastic clay is extruded from a die having a predetermined shape by a screw). The extruded molded body is continuous, and after being cut into a predetermined size, dried, divided into two parts, and fired to obtain two product tiles from one molded body. . Thus, the split surface is a split skin surface having the same surface shape as natural stone. Therefore,
It is possible to obtain two split skin tiles from one compact.

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

The molded body 3 extruded from the base 1 is
After being cut to a predetermined size, it is dried until it has a predetermined strength. Then, as shown in FIG. 7, the divided blade 11 that can be advanced and retracted by the cylinder
The compact 3 is divided into two parts as shown in FIG. 8 by pressing against the letter-shaped notch 4 to give a tile surface of the split skin surface 12 on the divided surface.

[0005]

Thus, the molded body 3 of the plastic clay 6 extruded from the die 1 of the conventional extruder is formed of a spiral clay layer 13 as shown in FIG. It has a layered structure. This is because the extruder is a plastic clay 6
Is extruded by a spiral blade (screw).

In the molded body 3 having the spiral clay layer 13, when the molded body 3 is divided into two in the manner shown in FIG. 7, the breaking stress by the divided blade 11 is expressed on an imaginary line passing through the center of the spiral. It proceeds in a direction substantially orthogonal to the clay layer 13 and has a regular fracture surface.
That is, the breaking stress acts across the clay layer 13 through the center of the spiral, so that the split skin surface 12
Are irregular, and only small irregularities can be obtained.

[0007] When the tile 8 having the split skin surface 12 having such small unevenness is applied to an outer wall of a building or the like, an impression that the split skin surface 12 is intentionally divided may be given. Although it was possible to obtain the surface properties of the unevenness quite close to the stone, the size of the unevenness was still insufficient, and the surface properties that could give an impression completely similar to natural stone could not be obtained.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems and has been improved and removed therefrom. A molding machine and a production method capable of producing a cracked tile having large uneven surface properties are provided. Is to be provided.

According to the first aspect of the present invention, a plastic clay having a predetermined moisture content is extruded from a die of a molding machine and divided into two parts after drying. In the forming machine of the split skin tile to obtain the split skin surface on the split surface, by disposing a middle ball for forming irregularities on the back side of the tile in the vertical direction of the center of the base, the middle ball and In the vertical direction between the left and right inner side surfaces of the base, an unnecessary portion of the extruded molded body is cut off, and a cutting blade for forming irregularities on the back side of the tile is provided. It is a molding machine.

[0010] The means of claim 2 adopted by the present invention is:
2. The method according to claim 1, wherein a plurality of molded bodies from which two split-skin tiles can be obtained are formed simultaneously by forming a plurality of rows of middle balls at a middle portion in the left-right direction of the base. It is a molding machine for split skin tiles.

Further, the means of claim 3 employed in the present invention is that the plastic clay adjusted to a predetermined water content is extruded from a die by a spiral blade of an extruder, and is divided into two parts after drying. In the method for producing a cracked tile in which a cracked surface is obtained, the layer of the plastic clay of the extruded molded body is spirally continuous from the center of the molded body, and the extruded molded body is dried. By dividing the extruded body at a position apart from the center of the spiral of the layer of the plastic clay and at a portion along the spiral direction, it is possible to obtain a cracked surface with large irregularities on the divided surface. This is a method for producing a featured tile.

[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 base 14, FIG. 2 is a perspective view of a molded body 15, and FIG. It is a front view of the body 15.

As shown in FIG. 1, a base 1 according to this embodiment is shown.
4, a middle ball 16 is disposed in the vertical direction of the center of the molding space 2, and a cutting blade 7 is disposed in the vertical direction between the middle ball 16 and the left and right inner side surfaces of the molding space 2. are doing. The middle ball 1
At the upper and lower positions between the cutting blade 6 and the cutting blade 7, projections 5 for forming the cuts 4 for division in the molded body 15 are arranged.

The middle ball 16 is for forming the soles 9 of the product tiles at the joint portion in a state where the back surfaces of the product tiles are joined. Further, the cutting blade 7 is for cutting off unnecessary portions of the extruded plastic clay and, at the same time, forming irregularities on the back side of the product tile. In this case, the cutting blade 7 integrally has a horizontal cutting blade 7a for separating the unnecessary portion of the cut plastic clay up and down to reduce the volume and to make subsequent handling convenient.

As shown in FIG. 2, the molded body 15 extruded from the base 14 configured as described above is in a state where the surfaces forming the tile back surface of the conventional molded body 3 are in contact with each other. It is possible to form four split skin tiles from one formed body 15. That is, the molded body 15 is firstly divided into two left and right molded bodies 1 by the middle ball 16 at the center thereof.
7, 17 are separated. Each of the compacts 17 has the same appearance as the conventional compact 3 shown in FIG. Further, each molded body 17, 17 is divided into two at the position of the cut 4 in the manner shown in FIG.
Four split skin tiles are obtained from one molded body 15.

By forming the base 14 so as to obtain four split skin tiles from one molded body 15 as described above,
The clay layer 1 of the molded body 15 extruded from the base 14
3 has a layer structure that spirally spreads from the center of the molded body 15, as indicated by the dashed line in FIG. In this layer structure, the imaginary line connecting the upper and lower cuts 4, 4 of the molded body 3 is located away from the center of the spiral and substantially along the direction in which the clay layer 13 is divided (the direction of the imaginary line). Become.

For this reason, the compact 15 is divided into two compacts 1
When the molded bodies 17, 17 are further divided by the fracturing device shown in FIG. 7 after being separated into the pieces 7, 17, the rupture stress caused by the dividing blades 11, as shown in FIG. , And the divided surface has the shape of large irregularities 18 and 19. That is,
The split skin tiles 20 and 21 having the split surface of the large unevenness 18 and 19 as the tile surface are obtained. The split skin tile 20 near the left and right inner surfaces of the molding space 2 of the base 14 has a large concave portion 18 on the entire tile surface, and the split skin tile 21 near the center of the molding space 2 has a large convex portion 19 on the entire tile surface.
Becomes

If the cracked surface has such a large uneven shape, it is possible to obtain a surface property very close to natural stone, and the wall surface on which the cracked tiles 20 and 21 are constructed is as if it were entirely natural stone. It can give the impression of being a wall.

FIGS. 4 and 5 relate to a second embodiment of the present invention. FIG. 4 is a front view showing a base 22, and FIG.
Is a molded body 2 of plastic clay extruded through the base 22
3 is shown. In the base 22 according to the second embodiment, the base 14 of the first embodiment forms two molded bodies 17 for obtaining two split skin tiles 20 and 21 at the same time, Four molded bodies for obtaining two split skin tiles are simultaneously molded.

The die 22 divides the molding space 24 into six sections in the left-right direction, and the cutting blade 7 and the horizontal cutting blade 7a for cutting unnecessary portions of the plastic clay are disposed at the left and right end boundaries. A middle ball 16 is disposed at each of three boundary portions of the remaining central portion. In addition, protrusions 26 for forming the concave portions 25 for division are arranged at the upper and lower central positions of the remaining four sections except for the sections where the unnecessary plastic clay is extruded at the left and right ends.

The molded body 23 extruded from the thus configured base 22 is as shown in FIG.
Is divided into four molded bodies 25 at the portion of the through hole formed by the above, and each molded body 25 is further divided into two at the position of the concave portion 25, so that a total of eight split skin tiles can be obtained from one molded body 23. 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 a dashed line in FIG. 5, a divided virtual line connecting the upper and lower concave portions 25 is formed. Will all be located away from the center of the spiral. In addition, at the center in the vertical direction on the dividing virtual line, the breaking stress at the time of dividing propagates along the above-mentioned spiral clay layer 13, and the cracking surface of the uneven surface is considerably larger than in the conventional case. Can be formed. The other configuration, operation, and effect are basically the same as those of the first embodiment.

[0023]

As described above, in the present invention,
Since the layer structure of the plastic clay of the molded body extruded from the molding machine was formed into a spiral shape and the molded body was divided at a position away from the center of the spiral, the breaking stress was reduced by the plastic clay. , And the boundary surface of the clay layer becomes a split skin surface. Therefore, in the cracked tile obtained in this way, the cracked surface of the surface becomes an uneven surface along the spiral clay layer, an extremely large uneven surface is obtained, and a surface shape closer to natural stone is obtained. It is possible to build walls. Further, the molding machine is capable of simultaneously molding two or more molded bodies from which two split tiles are obtained, and is excellent in production efficiency.

[Brief description of the 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 surface of a plastic clay in a molded body according to the first embodiment of the present invention.

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

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

FIG. 6 is a front view showing a die of a conventional extrusion molding machine.

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

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

FIG. 9 is a front view showing a layer structure of a plastic clay in a conventional formed body.

[Explanation of symbols]

2 ... molding space 4 ... cut 7 ... cutting blade 7a ... horizontal cutting blade 9 ... back leg 14 ... mouthpiece 15 ... molded body 16 ... middle ball 17 ... molded body 18 ... concave surface of concave part 19 ... surface of convex part 20: split skin tile 21: split skin tile 22: base 23: molded body

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-261713 (JP, A) JP-A-3-21110 (JP, A) JP-A-3-130108 (JP, A) JP-A-62-162 109608 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B28B 3/20 B28B 11/16

Claims (3)

(57) [Claims] 1. A molding machine for a split-skin tile in which a plastic clay adjusted to a predetermined moisture content is extruded from a die of a forming machine, and is divided into two after drying to obtain a split-skin surface on a split surface. Arranging a middle ball for forming irregularities on the back side of the tile in the vertical direction of the center of the base, and unnecessary portions of the molded body extruded in the vertical direction between the middle ball and the left and right inner side surfaces of the base A cutting machine for cutting a split-skin tile, wherein a cutting blade is provided for cutting off the surface and forming irregularities on the back side of the tile. 2. The method according to claim 1, wherein a plurality of molded bodies from which two split skin tiles can be obtained are simultaneously formed by forming a plurality of rows of middle balls in a middle portion of the base in the left-right direction. Item 6. A machine for forming a split skin tile according to Item 1. 3. A cracked skin tile in which a plastic clay adjusted to a predetermined water content is extruded from a die by a spiral blade of an extruder, and is dried and divided into two to obtain a cracked surface on a divided surface. In the manufacturing method, the layer of the plastic clay of the extruded molded body is spirally continuous from the center of the molded body, and after the extruded molded body is dried, from the center of the spiral of the layer of the plastic clay. A method for producing a split-skin tile, wherein the extruded product is divided at a position apart from the extruded portion in a spiral direction to obtain a split-skin surface having large irregularities on the split surface.