JP2002331512A - Wet molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wet molding method which can produce various small plates in which uneven patterns on the upper surfaces are different eminently by one molding line. SOLUTION: A molding 7 in the shape of a wide belt plate is extrusion- molded from an extrusion molding machine 6. The molding 7 is rolled by a roll 8 with its circumferential surface made an irregular uneven surface to make a belt plate-shaped molding 7', and the molding 7' is cut to make a plain plate 9. The plain plate 9 is punched perpendicularly to the extrusion direction into long, small plates 13a-13d. A punching blade meanders in the longitudinal direction, and its thickness is increased toward the side of its root.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet molding method for molding a molded product such as a tile or an extruded cement board, and particularly to a method for producing a tile having a natural stone-like or weathered brick-like appearance. The present invention relates to a wet molding method suitable for performing

[0002]

2. Description of the Related Art In many cases, a tile having an uneven front surface is used as an exterior tile. As a method of manufacturing such a tile having unevenness, there is a method shown in FIG. In this method, tile raw materials (for example, pottery stone,
Clay, chamotte, etc.) with water and extruder 1
Then, it is extruded into a plate shape to obtain a strip-shaped molded product 2. Next, the upper surface of the strip-shaped molded product 2 is rolled with a roll 3 having an uneven outer peripheral surface to form irregularities on the upper surface of the strip-shaped molded product 2. Thereafter, the rolled band-shaped molded product 2 ′ is cut into a required size by a cutting device having a piano wire 5 to obtain a molded product 4. The molded article 4 is thinly glazed as required, dried, and fired to produce an exterior tile.

[0003]

In the prior art shown in FIG. 5, the roll 3 is pressed against the strip-shaped molding 2 so that the pattern on the outer periphery of the roll 3 is repeated every time the roll 3 rotates. A pattern is formed on the upper surface of the strip-shaped molding 2 ′. For example, in FIG. 5, motif a, motif b, motif c, and motif d are repeated a, b,
A repeating pattern of c and d is formed. When the strip-shaped molded product is cut at a length of, for example, three motifs to obtain a molded product 4 having a size of one tile, the motif of the molded product 4 is typically abc, bcd, cda. , Dab. Needless to say, the division is actually performed in the middle of a, the middle of b, the middle of c, and the middle of d. For example, a pattern such as [(the second half of a) + b + c + (the first half of d)] also occurs. The pattern is almost the same as abc or bcd.

[0004] Thus, in FIG.
Only the individual patterns are formed, and when the tile is stretched on the wall surface, the appearance is poorly changed and lacks in aesthetic appeal.

[0005] If the diameter of the roll 3 is remarkably increased, it is possible to manufacture tiles of a large number of motif patterns from one molding line. However, due to cost restrictions, the roll diameter cannot be so large. Can not.

Further, as described above, the motif pattern formed by the method of FIG. 5 is abc, bcd, c
da and dab, which are relatively similar to each other. For example, the pattern for abc is very similar to bcd and dab, and bcd is very similar to abc and cda. For this reason, even though typically four patterns are formed, the patterns are similar to each other, and the wall surface on which these tiles are set tends to lack a change.

The tile manufactured by the conventional method shown in FIG. 5 has a side surface (wood end surface) perpendicular to the back surface. Become.

An object of the present invention is to solve the above problems and to provide a wet molding method capable of obtaining molded articles of various motifs from one molding line. Also,
An object of the present invention is to provide a wet molding method capable of molding a molded article rich in natural stone.

[0009]

According to a first aspect of the present invention, there is provided a wet molding method comprising the steps of: extruding a kneaded product into a plate from an extruder; A wet forming method, comprising: a roll applying step of pressing a roll having a pattern to decorate the unevenness; and a punching step of punching the rolled extruded plate into a rectangular plate. The uneven pattern is irregular in the circumferential direction and the roll axis direction, and in the punching step, punching is performed such that the longitudinal direction of the small plate is substantially orthogonal to the extrusion direction of the extruded plate. Is what you do.

According to such a wet forming method, in the punching step, the longitudinal direction of the small plate is made to be substantially orthogonal to the extrusion direction, so that many types of small plates having significantly different motifs are manufactured in one molding line. It becomes possible.
The reason why the motifs are diverse will be described in detail in an embodiment described later.

In this wet forming method, the punching step is a step in which a rectangular frame-shaped blade is driven into the extruded plate from above, and the blade is formed by cutting the wooden end face of the punched small plate into an inclined surface. It is preferable that the blade surface is inclined such that

When the wooden end surface of the small plate is thus inclined, the artificial feeling is reduced.

In this case, the blade preferably extends non-linearly in the direction of the side of the rectangle. By using this blade, the wood end surface of the small plate becomes non-linear, and the natural stone becomes stronger.

Further, when performing the punching, it is preferable that a plurality of blades are provided for a common elevating base, and a plurality of small plates are punched by one descent of the elevating base. Item 4). If you do this,
The production efficiency of platelets is extremely high.

The wet forming method of the present invention (claim 5) comprises a step of extruding the kneaded material into a plate from an extruder, and forming a roll having an irregular pattern on the outer peripheral surface on the upper surface of the extruded plate. A wet forming method comprising: a roll applying step of pressing and embossing the concavo-convex decoration; and a punching step of punching the rolled extruded plate into a rectangular small plate. Is punched into the extruded plate from above, and the blade is inclined such that the wooden end surface of the punched plate becomes an inclined surface.

According to such a wet molding method, it is possible to manufacture a small plate having an inclined wood end surface. In this wet forming method, it is also possible to make the blade non-linear and the wood end face non-linear. Also,
The manufacturing efficiency may be enhanced by punching a plurality of small plates at once (claim 7).

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a wet molding method according to the embodiment, FIG. 2 is a perspective view of a punching machine as viewed from below, FIG. 3 is a sectional view taken along the line III-III of FIG. The figure is a sectional view taken along the line IV-IV in FIG.

A strip-shaped molded product 7 having a width larger than the length of one tile is extruded from an extruder 6,
The upper surface of the strip-shaped molded product 7 is rolled by a roll 8. An uneven pattern is provided on the outer peripheral surface of the roll 8, and the strip-shaped molded article 7 becomes a strip-shaped molded article 7 'having an upper surface of the uneven pattern to which the pattern is transferred. The strip-shaped molded product 7 ′ is cut in a direction orthogonal to the extrusion direction by a cutting device 5 made of a piano wire or the like to form a base plate 9. The base plate 9 has a length in the extrusion direction slightly larger than the total width of a plurality of tiles (four in this embodiment). This blank 9
Is punched by a punching machine 10 shown in FIG.
Four small plates 13 (13a, 13b, 13c, 13d) are formed.

The punching machine 10 has a blade 11 protruding downward from a lower surface of a base plate 12. This blade 1
1 comprises a blade 11a in the direction perpendicular to the pushing direction and a blade 11b in the pushing direction. Two blades 11b, 11b are arranged along both sides of the base plate 12, and these blades 11b, 1b
5b blades 11a, 11a, 11a,
11a, 11a are provided.

As shown in FIG. 3, each of the blades 11a and 11b has a tapered cross-sectional shape that is thicker at the base (upper end) side and thinner toward the tip (lower end) side. It is inclined so as to be closer to the center of the platelet. Further, each of the blades 11a and 11b has a non-linear shape meandering irregularly in the extending direction thereof. Each blade 11a, 11
The blade surface of b is an uneven surface.

By pressing the punching plate 10 against the base plate 9 from above, four small plates 13 are punched out.

As shown in FIG. 4, the upper surface T of each small plate 13 is an uneven surface, and the side surface S is an inclined surface. The side surface S is meandering irregularly in the longitudinal direction. The side surface S is also uneven in the vertical direction.

The small plate 13 is then thinly glazed as required, and then dried and fired to form a tile.

Each plate 13a, 13b, 13c, 13d
As shown in Fig. 1, the motifs on the upper surface are a, b, c, and d, which are completely different from each other, so that four small plates with completely different patterns are molded from one molding line. become. For this reason, when these tiles are mixed and stuck on the wall surface, the appearance becomes more interesting in design.

Further, all the side surfaces S of each tile meander irregularly in the side direction, and the side surfaces S are formed of a concave and convex surface which is inclined so that the front side of the tile is closer to the center of the tile. The natural stone will be rich in the natural feeling of the split stone tone, and the design of the tiled wall will be rich in nature.

In the present invention, at least a part of the small plate may be punched so as to be smaller than that of the above embodiment. FIG. 6 shows an example of this, and the plate 13
b, 13c instead of half-sized platelets 13
Two pieces each of b 'and 13c' are punched.

[0027]

As described above, according to the present invention, it is possible to manufacture various types of small plates having significantly different topographic patterns on a single molding line. Further, according to the present invention, it is possible to produce a small plate having a side surface (wood end surface) irregular and rich in natural feeling. Furthermore, it is also possible to shape all the wood end surfaces so as to be inclined.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a wet molding method according to an embodiment.

FIG. 2 is a perspective view of the punching machine as seen from below.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a perspective view showing a conventional example.

FIG. 6 is a perspective view showing another embodiment.

[Explanation of symbols]

 1,6 Extrusion molding machine 2,7 Strip-shaped molded product 3,8 Roll 4 Molded product 5 Piano wire 9 Raw plate 10 Punching machine 11 Blade 13 Small plate

Claims (7)

[Claims] 1. A step of extruding a kneaded product into a plate shape from an extruder, and a rolling step of pressing a roll having an irregular pattern on an outer peripheral surface against an upper surface of the extruded plate to decorate the irregularity. And a punching step of punching the rolled extruded plate into a rectangular plate, wherein the concavo-convex pattern on the outer peripheral surface of the roll is irregular in the circumferential direction and the roll axial direction, The wet forming method is characterized in that in the punching step, the small plate is punched such that the longitudinal direction thereof is substantially perpendicular to the extrusion direction of the extruded plate. 2. The punching step according to claim 1, wherein the step of punching a rectangular frame-shaped blade into the extruded plate from above is performed, wherein the edge of the cut small plate has an inclined surface. A wet forming method characterized in that the blade surface is inclined so that 3. The wet forming method according to claim 2, wherein the blade extends non-linearly in the direction of the side of the rectangle. 4. The wet forming method according to claim 2, wherein a plurality of blades are provided for a common lifting base, and a plurality of small plates are punched by one descent of the lifting base. Method. 5. A step of extruding the kneaded material into a plate shape from an extruder, and a rolling step of pressing a roll having an irregular pattern on the outer peripheral surface against the upper surface of the extruded plate to decorate the irregularity. And a punching step of punching the rolled extruded plate into a rectangular plate. In the punching step, a rectangular frame-shaped blade is punched into the extruded plate from above. A wet forming method, wherein the blade has an inclined surface such that a wood end surface of the punched small plate is an inclined surface. 6. The wet forming method according to claim 5, wherein the blade extends non-linearly in the direction of the side of the rectangle. 7. The wet forming method according to claim 5, wherein a plurality of blades are provided for a common elevating base, and a plurality of small plates are punched by one descent of the elevating base. Method.