JPS591208A - Manufacture of square-shaped tile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing square tiles of arbitrary length with arbitrarily bent cross-sectional shapes, in particular, the bending angle can be made accurate without being distorted during firing, etc. The present invention also relates to a method for manufacturing a square tile, which makes it possible to easily manufacture a square tile with high product value, which can be glazed over the entire side end face of the square tile, through a simple process that eliminates the need for a pedestal or the like.

Conventionally, as shown in FIG. 1, square tiles are made by extrusion-molding square tiles 1 of arbitrary length bent at an arbitrary angle to have a cross-sectional shape, for example, and then provided with a chevron-shaped surface 21 having the same angle as the bending angle. On the chevron-shaped surface 21 of the pedestal 2, square tile 1 back surface 1
Place it so that the B side is in contact with it and fire it.

However, when the square tile 1 is placed on the pedestal 2 and fired, the back surface 1B of the square tile 1 is in contact with the chevron-shaped surface 21, while the front surface 11 is in contact with the air, so that no damage occurs during or after firing. Surface 1 of square tile 1 due to differences in heat transfer during cooling of
1. There is a difference in the expansion and contraction rate of the back surface 18, which causes distortion, so that the corner tile 1 does not have the desired bending angle, and even during construction, the surface of the adjacent corner tile 1 becomes uneven and easily damaged. In addition, even though it is called a square tile, there are various bending angles and lengths. It is necessary to prepare various types.

In addition, when the square tile 1 is glazed and fired,
When the entire side end surface 12 of the square tile 1 is glazed and fired,
Since the glaze flows between the square tile 1 back surface 13 pedestal 2 chevron-shaped surface 21 which are in contact with each other, the two are fused together. Therefore, when the square tile 1 is released from the pedestal 2 after firing, there is a strong tendency to damage the square tile 1, and usually, a mold release agent, alumina powder, etc. are interposed in the firing process.

However, not only does this unnecessarily complicate the work process and reduce efficiency, but the use of such a mold release agent also makes it difficult to glaze the entire side end surface 12 of the square tile 1. It is not possible to completely prevent fusion, and it is still impossible to apply glaze to the entire side end surface 12, so depending on where the glaze is applied, the unglazed side surface may be exposed and stand out, reducing its decorative value. This results in various inconveniences, such as a significant drop in performance.

In addition, although the above method can produce square tiles with an L-shaped cross section, in the case of square tiles etc., due to shrinkage due to firing,
Cracks inevitably formed, making it impossible to mold the tiles in one piece and requiring separate firing.The shape of the square tiles that could be manufactured was also limited to a cross-section, making them lacking in versatility. .

In view of the above-mentioned problems associated with the conventional square tile manufacturing method, the present invention aims to improve work efficiency by eliminating the need for a pedestal at all, and to prevent distortion of the square tiles during the firing process, thereby achieving the desired level of production. It is possible to manufacture high-precision square tiles with bending angles and is easy to install.Furthermore, the entire side edge of the square tiles can be glazed, making them extremely valuable as a product, and can be applied to various cross-sectional shapes. This method was developed for the purpose of providing a method for manufacturing square tiles, and its gist is that when manufacturing a square tile of an arbitrary length with an arbitrarily bent cross-sectional shape, the back surface of the square tile is bridged between the vicinity of both tips. A process of forming the tile main body by integrally bonding it with the base plate of the flat plate that has been formed, and providing suitable notches in the base plate, and a process of firing the tile main body in a predetermined firing chamber after the forming process. and a step of dividing the square tile by shearing and removing the substrate portion from the driving portion by hitting the tile main body after the firing step.

Hereinafter, in order to further clarify the gist of the present invention described above,
An embodiment of the present invention will be described with reference to FIGS. 2 and 8.

First, the tile main body P is extruded. This tile main P
has a structure in which the substrate portion 4 is bonded to the square tile 8 in a cross-linked manner.

The square tile 8 is bent at an arbitrary angle to have an L-shaped cross section, and a dovetail groove 881 is formed on the back surface 88 of the square tile 8, and a dovetail groove 881 is formed on the back surface 88 near the image tip 88B. A seat surface of the base plate 4, which is continuous with the upper edges 4a on both sides of the base plate 4.

4b protrudes from the image front end portion 881L.

Therefore, since both tip ends 88& of the back surface 88 of the square tile 8 protrude from the substrate section 4 as described above, the glaze can be applied to the entire surface 81 and side end surfaces 82 of the square tile 8.

The base plate 4, which is extruded integrally with the square tile 8, has a substantially flat plate shape, and there are appropriate mold grooves 4 on the back side 4b.
1 is recessed, and a notch 5a for enabling shear removal near the joint portion of the substrate portion 4 with the corner tile 8, and a notch 5a for making shear removal of the substrate portion 4 easier A cut portion 5b is provided for shearing and dividing the substrate portion 4 itself.

The tile main body P extruded into such a structure is fired in a predetermined firing chamber after glazing the front surface 81, side end surface 82, and bottom back surface 84 of the square tile 8 as necessary.

During this firing process, the square tile 8 is integrally connected to the substrate portion 4 near the upper edges 4a on both sides thereof, and the square tile 8 is
Since both the front surface 81 and the back surface 88 are structured to be in contact with air, they are resistant to deformation or distortion due to heat or external force, and are extremely easy to handle.

Then, after the firing process, if the substrate part 4 is lightly hit due to a defect or the like, the substrate part 4 itself is sheared at the notch part 5b and 8
At the same time as being divided, the corner tile 8 and the substrate part 4 are also cut into the notch 5a.
The square tiles 8 are then sheared and removed to form divided square tiles 8.

By using the above manufacturing method, the following excellent effects can be obtained.

(1) Since the corners of the back side of the square tile 8 are extruded and integrally joined together by the flat base plate 4, there is no need to place them on the baking process stand and the area can be directly subjected to the baking process. It became possible. Therefore, there is no need for a pedestal at all, and work efficiency is significantly improved. In addition, both the front surface 81 and the back surface 88 of the square tile 8 come into contact with the same air, and are all subjected to a uniform thermal effect. Since it can be fired in
Distortion does not occur due to differences in heat transfer, and since the substrate portion 4 is integrally connected near both ends of the back surface 88 of the square tile 8, it has sufficient strength against mechanical deformation. This makes it possible to provide square tiles with extremely accurate bending angles and flatness, making it extremely easy to install, and even with various cross-sectional shapes, it is highly effective and does not cause cracks. Become something.

(2) In addition, when taking the tile into and out of the firing chamber, there is no need to handle the tile main body and the cradle as in the past, and the tile main body P can be taken in and out by itself, and the alumina coating work can be done easily. It is extremely effective in improving workability, as it is completely unnecessary, and there is no need to prepare various pedestals depending on the shape of the square tile.
It is an efficient manufacturing method with no waste, as it is only necessary to match the ζ.

(8) The back surface 88 of the square tile 8 has both tip portions 88 & the substrate portion 4
Since the glaze is formed on the surface 81 of the square tile 8,
It is possible to glaze not only the entire side end surface 82 but also the bottom back surface 34 (indicated by the two-dot chain line in FIG. 2), so that the unglazed surface will not be exposed when this is done. Therefore, the decorative value is extremely high, and as mentioned above, the forming precision is also high, so it is possible to manufacture square tiles with high commercial value such as a good appearance in terms of design.

(4) When shearing the substrate 4 after firing, the notch 5b is provided not only in the vicinity of the joint between the substrate 4 and the square tile 8, but also in order to divide the substrate 41, so when the substrate 4 is sheared and removed. The impact on the corner tile 8 can be buffered by dividing the substrate portion 41, and the corner tile can be easily divided and molded without damaging it.

In the above embodiment, only the case where the board part is divided into eight parts was explained, but it goes without saying that the number of divisions of the board part is not limited to this. The notch portion for this purpose does not have to be provided on the substrate side as shown in the figure, but may be cut almost flush with the back surface of the corner tile or toward the inside of the corner tile. It is not limited to a cross-sectional shape, but it may be a so-called "curved shape" or a "bending shape", or a board part with a cross-sectional shape of a 7-shape, an inverted U-shape, an M-shape, a circle shape, etc. The specific tile-based structure of the present invention, the firing chamber used in the manufacturing method, the firing conditions thereof, etc. are intended to achieve the above-mentioned purpose, function, and effect. It goes without saying that these changes may be arbitrarily determined within the scope of the invention, and none of these changes change the gist of the present invention.

As will become clear from the above description, according to the present invention, the aforementioned problems that have arisen in the conventional method of manufacturing square tiles are very simply and effectively improved, and square tiles with high precision and high commercial value can be produced. It must be said that the practical benefits brought about by the present invention, such as being able to provide tiles efficiently and at low cost, are extremely large.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a state in which a square tile is placed on a pedestal when carrying out a conventional method for manufacturing square tiles, and Fig. 2 is a perspective view of a main body of the tile to be extruded when carrying out the method of the present invention. FIG. 8 is a perspective view showing the embodiment, and a front view showing a state in which the substrate portion is sheared off from the tile main body after firing to form square tiles in sections. 8-1 corner tile, 4-11 board part, 5a-1 piece part, 8B-1 back side, P--1 tile main body.

Claims (1)

[Claims] When manufacturing a square tile of any length with an arbitrarily bent cross-sectional shape, it is integrally bonded to a flat substrate portion formed to bridge the vicinity of the tip of the back side of the square tile, and appropriate cuts are made to the substrate portion. A process of forming the tile main body by providing a recessed part, a process of firing the tile main body in a predetermined firing chamber after the forming process, and a step of shearing the base part from the cut part by hitting the tile main body after the shell firing process. A method for manufacturing a square tile, comprising the steps of removing and dividing the square tile.