JPH0643050B2 - Wet tile base molding method and mold - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wet tile base forming method and a forming mold for efficiently forming a wet tile base used for an interior / exterior tile, etc. without a sheet. It is about.

(Prior Art) As a method for forming a wet tile base material, a so-called two-sheet punching method in which the bottom surfaces of the tiles are joined to each other in the vertical direction is so-called excellent in productivity and is generally used. In this case, since the tile after molding and firing is divided into upper and lower parts in the final step to obtain a product, cracks and protrusions are likely to occur on the divided surface, and the dimensional accuracy of the bottom surface is extremely low. on the other hand,
Recently, due to the improvement of the tile construction method, the demand for thin-walled wet tiles (20) having not only the adhesive reinforcing groove (21) on the back side but also the mounting lateral grooves (22) on both sides as shown in Fig. 6 has increased. However, it is difficult to produce such a thin-walled wet tile by the method of removing two pieces because high dimensional accuracy is required. Therefore, the method of single punching has attracted attention, but in the case of the single punching mold, unlike the double punching mold, there is no place to install a ball for uniform stirring of the raw materials, especially on both sides of the product. However, there is a problem that quality deterioration occurs and production efficiency is significantly deteriorated. Further, if the back surface of the tile has an adhesive reinforcing groove or the like and the shapes of the front surface and the back surface are different, there is a problem that the tile is warped in the drying step to reduce the production efficiency.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and does not cause quality deterioration of wet tiles having high dimensional accuracy, and warps even if the front and back surfaces have different shapes. The present invention has been completed for the purpose of a method for molding a wet tile base material and a molding die that can be efficiently mass-produced without causing the above.

(Means for Solving the Problems) The present invention, which has been made to solve the above problems, includes forming a wet tile base material by extrusion-molding a wet tile base material using a wet tile base forming mold having a through hole for forming. In the method, the molding surface on the side with a small surface area is formed by allowing the extension side protruding from the other surface to be connected to the outlet side of one surface with a large surface area of the front surface forming surface and the back surface forming surface of the molding through hole. The raw material extrusion speed is adjusted so that the progressing speed of the raw material is faster than that of the other surface so that the compactness of the front and back sides is made uniform, and both sides of the wet tile base material extruded from the through holes for molding are permeable for molding. The first invention is a method for forming a wet tile base material, which is characterized in that the wet tile base material is cut off when passing through the holes, and at the same time, mounting lateral grooves are formed on both side surfaces of the wet tile base material. The molding die used in the method is provided with a through hole for molding in which the back portion forming surface having the protrusion for forming the adhesive reinforcing groove and the front portion forming surface facing the back portion forming surface are formed vertically. And an extension surface projecting from the front surface forming surface is connected to the outlet side of the back surface forming surface, and exclusion through holes whose opening degree is adjustable are provided on both sides of the molding through hole through partition walls. A second aspect of the present invention is a molding die for a wet tile base characterized in that a protrusion for forming a mounting lateral groove is provided on the partition wall toward the through hole for molding.

(Example) Next, the Example of this invention is described in detail with reference to drawings.

In the figure, (1) is the die main body of the wet tile forming die for removing one piece, and in the center part there is a forming through hole (2) of a size corresponding to the width and thickness of the tile base to be formed. At the same time, it is provided on both sides with the same height as the molding through hole (2), and an exclusion through hole (3) for eliminating non-uniform parts of the raw material mixture is partitioned by a partition wall (4). The partition wall (4) is provided with a protrusion (5) for forming a mounting lateral groove which projects toward the molding through hole (2). Moreover, the above-mentioned exclusion through hole
On the front side of (3), there is provided an adjusting plate (7) capable of freely adjusting the opening degree by tightening a bolt screw (6). Further, the molding through hole (2) has a back surface (9) provided with a plurality of protrusions (8) on the upper surface side thereof for forming the adhesive reinforcing groove (21) on the back surface of the tile (20). The lower surface side that is formed on and opposite to this is formed as a flat surface forming surface (10) for forming the smooth surface of the tile base (20). Further, as shown in FIG.
On the outlet side of (9), an extension surface (9
a) is continued.

(Operation) As shown in FIG. 4, for example, the structure as described above is obtained by mounting the mold body (1) at a predetermined position of the tile extruder (12) through the mounting member (11). If used, the wet tile 20 will be continuously molded at a constant rate. At this time, since the wet tile base material (20) is extruded and molded by the molding through hole (2) having a predetermined size provided so as to correspond to the final shape, extremely high dimensional accuracy can be obtained. However, since both sides of the molding through hole (2) are provided with the exclusion through hole (3) through the partition wall (4), the mixing of the raw materials injected into the mold body (1) is sufficient. It is not extruded from the excluding through hole (3) as a removing part (23) in a state where both end parts that do not perform non-uniformity are automatically separated from the wet tile base material (20) on the main body side. Become. Therefore, wet tile substrate (20)
There is no part where the raw materials are not sufficiently mixed inside, and it is possible to obtain extremely high quality products with homogeneously mixed raw materials.In particular, the mounting lateral grooves (22) on both sides are homogeneous raw materials, In addition, since it is formed with high dimensional accuracy, excellent quality is guaranteed. Furthermore, the partition wall (4) has a protrusion (5) for forming a lateral groove for mounting toward the through hole (2) for molding.
Since it is provided with a thin wet tile base material (20) having not only post-processing but also a groove (21) for adhesion reinforcement on the back surface and lateral grooves (22) for attachment on both sides as shown in FIG. Will be obtained. On the other hand, the back portion forming surface (9) having the protrusion (8) which is the upper surface of the molding through hole (2) has an extension portion (which is projected to the outlet side more than the flat surface portion forming surface (10) which is the lower surface. 9a) is continued, the raw material extrusion speed is faster on the flat front surface forming surface (10) side than on the back surface forming surface (9) side, and the density of the raw material between the upper and lower surfaces should be extremely close. Becomes That is, in the conventional case, since the back surface forming surface (9) has a large surface area compared to the flat surface forming surface (10) and the viscous raw material slows the progress speed due to frictional resistance, the back surface forming surface (9) side The degree of denseness of the raw material was significantly higher than that on the surface forming surface (10) side, and the warp of the product occurred due to the difference in the denseness between the upper and lower sides, but in the present invention, the surface forming surface (10) side Since the progress speed is adjusted to be high, the degree of denseness of the raw material is extremely uniform. As a result, the wet tile base material (20) undergoes uniform shrinkage even in the subsequent drying step, and an extremely high-quality product having no warp can be obtained. The appropriate opening degree of the exclusion through hole (3) and the projection range of the back surface forming surface (9) are appropriately determined based on various factors such as the type of raw material, the molding speed, and the tile shape. It is a thing. Further, as shown in FIG. 5, a partition wall (4a) which divides the width direction into equal parts can be provided inside the through hole (2) for molding, and also on the surface forming surface (10) side. It is also possible to provide a slight uneven pattern.

(Effects of the Invention) As is apparent from the above description, the present invention reliably prevents quality deterioration that has occurred at both ends in the conventional molding of a wet tile base material for blanking, and has high dimensional accuracy. It is possible to efficiently mold high quality products without any warp.

Therefore, the present invention is an extremely large one that contributes to the development of the industry as a molding method and a molding die for a wet tile base material that eliminates the conventional problems.

[Brief description of drawings]

The drawings show an embodiment of a mold for molding a wet tile base material according to the present invention. Fig. 1 is a front view, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a partially cutaway perspective view. 4 is a front view of another embodiment, and FIG. 6 is a perspective view of a molded tile base material. (1): Mold body, (2): Through hole for molding, (3): Through hole for exclusion,
(4): Partition wall, (5): Protrusion for forming lateral groove, (7): Adjustment plate,
(8): Protrusion for forming a groove for adhesion reinforcement, (9): Back surface forming surface, (9
a): Extended surface, (10): Surface forming surface.

Claims (2)

[Claims] 1. A method for forming a wet tile base material by extrusion-molding a wet tile base material using a wet tile base material forming mold having a forming through hole, wherein a surface forming surface and a back surface forming surface of the forming through hole. The extrusion rate of the raw material so that the advancing speed of the raw material on the molding surface of the smaller surface area is faster than that of the other surface by continuing the extension surface protruding from the other surface to the exit side of the one surface with the larger surface area. Is adjusted to make the front and back sides uniform in density and both side parts of the wet tile base material extruded from the through hole for molding are cut off when passing through the through hole for forming, and at that time both side surfaces of the wet tile base material are cut off. A method for forming a wet tile base material, characterized in that mounting lateral grooves are simultaneously formed on the. 2. A protrusion (8) for forming a groove for adhesion reinforcement on a mold body (1).
(9) with a back surface forming surface and a front surface forming surface (1
(0) and a through hole for molding (2) formed on the upper and lower sides, and an extension surface projecting from the front surface (10) on the outlet side of the back surface (9)
(9a) is continued and both sides of the molding through hole (2) are provided with exclusion through holes (3) whose opening degree can be adjusted via a partition wall (4), and the partition wall (4) A mold for molding a wet tile base, characterized in that a protrusion (5) for forming a mounting lateral groove is provided toward a molding through hole (2).