JPH02293588A - Basin-like frame with h-shaped section for facing bending tile provided with movable horse-chestnut plate and baking of the facing bending tile - Google Patents

Abstract

PURPOSE:To enable a facing tile with an approximately 90 deg. bending angle to be controlled by using a basin-like frame provided with a movable horse-chestnut plate. CONSTITUTION:For example, a 5mm thick and 50mm wide horse-chestnut plate 6 with a downwardly inclined end face is set as located on a basin-like frame having an H-shaped section wherein upper and lower bottom plates 3 and 4, respectively, have a 5mm high step therebetween and a movable space 5 having a length of 50mm from the step to the end of the lower bottom plate 4 is formed while the horse-chestnut plate 6 is projected from the end of the lower bottom plate 4 by about 10mm. The surface of the horse-chestnut plate 6 is flush with the surface of the upper bottom plate 3. An unbaked tile 8 with two bends wherein each bend has an angle of 89 deg., a little smaller than 90 deg., with respect to a horizontal direction and which has a small bending angle between the base and the vertical portion of the bend is located on a plane wherein said two surfaces are flush with each other and the base of the bend of the tile and the downwardly inclined end face of the horse-chestnut plate are made abut against each other via an alumina. A vacant box is located in a lower- most stage and the basin-like frames on which the unbaked tiles 8 are located are stacked thereon so that the vertical portions of the adjacent tiles are alternately located on the opposite sides so that the adjacent vertical portions are not brought into contact with each other. Then, the tiles 8 are baked in a baking furnace.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sagger for exterior curved tiles having a bending angle of approximately 90 degrees, and a method for firing exterior curved tiles. [Prior Art] Conventionally, in order to manufacture bent tiles, the bent part of the unfired bent tile was brought into contact with the end surface of the bottom plate of the sagger pot to restrain the shrinkage of the tile during firing, but this method This method had the problem that the tile would bend during firing due to shrinkage of the placed tile, and the back of the tile would bend on the opposite side of the surface restrained by the edge of the sagger bottom plate. especially,
The force generated by shrinkage during firing acts as a rotational moment that opens the angle at the base of the bend, causing a change in angle. There is also a standing firing method in which tiles are placed upright on a pottery table and fired, but with this method, the shrink is restrained on the side of the tile that comes into contact with the pottery table during firing, while the other sides are Because it was free, there was a problem that the tiles would be twisted and deformed. [Problems to be Solved by the Present Invention] The deformation of tiles that occurs during firing of such curved tiles has not been solved to date, and a solution is strongly desired. The present invention solved this problem by developing a special sagger and a method for firing tiles using this sagger. [Means and Effects for Solving the Problems] The present invention has the following features: 1. In a sagger with an H-shaped cross section, which is formed by installing side walls on a pair of opposing sides of a square bottom plate, the bottom plate is connected to the lower bottom plate. It has a movable space on the lower base plate, and the movable space is located at the end of the lower base plate in the part where the side wall is not installed. A movable horse conker with the same shape, width smaller than the width of the open space, thickness almost the same as the thickness of the upper bottom plate, and a slope sloping diagonally downward at the tip is placed, and the tip of the slope of the horse chestnut is placed. An H-shaped sagger for exterior curved tiles with a movable torch that forms the top end of the tile-mounting surface of the bottom plate. 2. The bottom plate has an H cross section.
The H-shaped sagger for exterior curved tiles provided with a movable conch according to claim 1, wherein the bottom plate is a movable space formed by placing a plate with a smaller area on the bottom plate of the shaped sagger. 3.2 In the H-shaped sagger for exterior curved tiles equipped with the movable conker described in 3.2 rfl requirement 1, the oblique tip of the slope of the movable conker protrudes outward from the tip of the lower bottom plate, and the bent portion is attached to the sagger. An unfired curved tile that has an angle slightly smaller than 90 degrees with respect to the horizontal direction and a small angle between the base of the curved part of the tile and the top of the curved part of the hanging part is placed, and the tip of the moving horse chestnut and the unfired curved tile are placed. A method for firing an exterior curved tile having a bending angle of approximately 90 degrees, characterized by interposing high-purity alumina between the bases of the curved portions of the fired tiles, abutting the two, and firing. 4. Next, place an empty pot on the lowest stage, and then make the oblique tip of the slope of the movable conker of the H-shaped sagger for exterior curved tiles equipped with the movable conker according to claim 1 protrude outward from the tip of the lower bottom plate. An unfired curved tile whose curved part has an angle slightly smaller than 90 degrees with respect to the horizontal direction and whose angle between the base of the curved part of the tile and the top of the curved part of the hanging part is small is placed in a sagger pot with a moving torch. High-purity alumina is interposed between the diagonal tip of the tile and the base of the curved part of the unfired curved tile, and the two are placed abutting each other, and this sagger is placed one step at a time so that the hanging parts of the tiles are opposite to each other so that the hanging parts of the tiles do not come into contact with each other. A method for firing exterior curved tiles having a bending angle of approximately 90 degrees, characterized by firing the tiles by stacking them alternately as shown in the figure. 5. The method according to any one of claims 3 to 4, wherein high-purity alumina is applied to one or both of the bent base of the unfired tile and the oblique tip of the sagger bottom plate, and the two are butted and fired. Firing method for exterior curved tiles. 6. The curved part of the unfired curved tile is 9 degrees with respect to the horizontal direction.
Any one of claims 3 to 5, which is an unfired curved tile having an angle slightly smaller than 0 degrees and having a small angle between the base of the curved part of the tile and the top of the curved part of the hanging part.
Firing method for exterior curved tiles described in section. Regarding ``. [Function] The present invention provides a sagger with an H-shaped cross section, in which the bottom plate is formed by a lower bottom plate and an upper bottom plate having a smaller area than the lower bottom plate, and a moving open space is provided on the lower bottom plate, and the moving open space is a part where no side wall is installed. It is placed at the end of the lower bottom plate of the moving space, and has a shape that is almost the same as the space, a width smaller than the width of the space, a thickness almost the same as the thickness of the upper bottom board, and a slope diagonally downward at the tip. A movable horse chestnut is placed on a slope. Therefore, the top surface of the moving horse chestnut becomes the same horizontal plane as the top surface of the upper base plate. And the mobile conker can move within the mobile open space. One of the major features of the present invention is that the conker carrying the tiles moves within the moving space. According to the present invention, the shape of the oblique tip of the conker and the bent part of the unfired tile have an angle slightly smaller than 90 degrees with respect to the horizontal direction, and the bending angle between the base of the bent part and the hanging part of the tile Due to the combination of the shape of the base of the curved part of the unfired curved tile with a small angle at the top, the force generated by the contraction of the long side of the curved tile placed during firing is applied to the tip of the sagger bottom plate, but the reaction force is Since the point of application can be brought closest to the base of the bend, the rotational moment that causes the angle to open can be minimized. However, if the conker does not move, the force generated by contraction during firing will not be zero, so the rotational moment that will open the angle of the tile will act, even if it is small, and the deformation of the tile will not become zero. In order to improve this, the present invention moves the conker in response to the shrinkage of the tile during firing and reduces the force acting on the base of the bent part of the tile, thereby bringing the rotational moment at which the angle of the tile opens close to zero. This completely prevents the tiles from deforming. Furthermore, in the present invention, due to the movement effect of the conker, the warping of the side of the curved tile that is not the hanging part is completely prevented.Although the present invention almost eliminates deformation due to the angle difference, in order to offset the amount of deformation, unfired It is effective for accuracy to keep the angle of the curved tile slightly smaller than 90°. A suitable angle is 89° to 89.5°. In the prior art, an attempt was made to make the angle of the unfired curved tile slightly smaller than 90° in order to offset the angular deformation, but the deformation caused by firing was large, resulting in large variations in the angle of the product. Measures alone will not solve the problem. This tendency is especially strong for large song tiles such as nicho songs and standard songs. Furthermore, in addition to the angular deformation, defects due to the inflection of the long side surface appear. According to the present invention, such drawbacks are eliminated. High-purity alumina is interposed between the diagonal tip of the moving horse chester and the base of the curved part of the unfired tile, and the two are brought together and fired. By interposing alumina, the diagonal tip of the moving horse chester and the tile are fused together. is prevented. As the alumina, high-purity alumina is preferable in terms of effectiveness. You can apply it to one or both of the slanted tip of the moving horse chestnut and the base of the curved part of the unfired tile. High-purity alumina is interposed between the diagonal tip of the moving conker and the base of the curved part of the unfired tile, and the two are placed abutting each other. As shown in the opposite position, by stacking the tiles alternately, the curved sagging parts of the placed tiles do not come into contact except at the base of the curved part, so there is no angular deformation due to contact. The downwardly inclined slope provided at the tip of the moving conker may be provided as a parallel surface on the other opposing side. By providing slopes on two sides in this way, there is an advantage that when the slope on one side becomes worn due to use, the other side can be used. [Example] Fig. 1 shows a sagger according to an embodiment of the present invention, where 1 indicates an H-shaped sagger in cross section, 2 is a side wall of the sagger, and 3 is an upper bottom plate.
4 is the lower bottom plate and 5 is the moving space. FIG. 2 is a perspective view showing a cross section taken along line I-I' in FIG. From this, it will be understood that the sagger can be turned over and used when the bottom plate etc. are worn out due to use. FIG. 3 shows the horse chestnut 6 placed on the moving space 5. The conker has almost the same shape as the moving open space, but it is slightly smaller because it moves through the harmful open space. A slope 7 that slopes diagonally downward is formed at the tip of the lengthwise side of the conker. When placing the conker in the moving space, place it with the tip of the conker slightly protruding beyond the edge of the bottom plate. In this way, a space is formed between the edge of the upper bottom plate and the conker. This space is the space where the horse chestnut moves in response to the shrinkage of the tile during tile firing. The conker may be integrated as shown in Figure 3, or it may be divided into several parts as shown in Figure 4. The bottom plate of a sagger consists of an upper and lower plate, but as shown in Figure 1, a plate may be placed on top of the bottom plate of an H-shaped sagger to serve as the upper and bottom plate, or it may be integrally molded. Figure 5 shows the unfired tiles 8 placed on the sagger of the present invention. The conker is placed so that its obliquely downwardly sloped tip protrudes outward from the tip of the lower bottom plate 4. The surfaces of the conker 6 and the upper base plate 3 are on the same plane. 8 is an unfired double curved tile placed on this surface. 9 is the greeting space of the conker which is formed between the end surface of the conker opposite to the diagonally downwardly sloped end surface and the base of the stepped upper base plate. Reference numeral 10 in FIG. 6 is an empty box placed on the lowest level, and the saggers on which unfired tiles 8 are placed from the next level are placed one step at a time so that the hanging portions of the tiles do not come into contact with each other. Stack them alternately so that they are on opposite sides. By placing the empty box at the bottom in this way, the sagging part of the tile will not come into contact with the girder floor plate. Next, the tile firing method of the present invention will be specifically explained. Example of firing a tile A movable space 5 is formed by setting the steps between the upper and lower base plates 3 and 4 of the H-shaped cross-sectional sagger shown in Figure 1 as 5 points, and setting the width from the base of the step to the tip of the lower base plate as 50 mm. A conker with a thickness of 5 IllI and a width of 50 m as shown in Fig. 3 and with one end surface slanted downward was placed on the sagger pot, as shown in Fig. Place and set it. The surfaces of the conker 6 and the upper base plate 3 are on the same plane, and the curved part has an angle of 89° with respect to the horizontal direction, which is disproportionately smaller than 90", and the base of the curved part of the tile An unfired double-curved tile 8 with a small angle at the top of the bent part of the hanging part is placed, and the base of the bent part and the end surface of the conker which is the obliquely downward slope are butted with alumina interposed. There is a conker movement space 9 between the end surface on the opposite side of the sloped end surface and the base of the stepped upper bottom plate.
is formed. Next, as shown in Fig. 6, an empty box 10 is placed on the lowest tier, and the saggers on which unfired tiles 8 are placed from the next tier are placed, one tier at a time, so that the dangling parts of the tiles do not touch each other. Stack them alternately so that they are on opposite sides. The filled boxes stacked in 36 layers in this way were placed on a firing cart and placed in a firing furnace for 12 minutes.
Fired at 80℃. Comparative Example: An unfired double-curved tile whose bent portion is at an angle of 90° with respect to the horizontal direction is placed in a conventional FI-type sagger pot, and the base of the bent portion of the double-curved tile is approximately 7 Ill from the tip of the bottom plate.
+ After placing them apart, they were fired in the same manner as in the manufacturing example. Comparative Test The results of the comparative test are shown in Table 1. Table 1 Angle (degree) Warpage (rm) Example maximum value 90.2 Minimum value 89.4 Width range 0.8 Average value 89. 75 +0.15 -0.24 0.39 0.12 Comparative example maximum value 91.2 +0.42 minimum value 87.6 -0.32 width range 3
．． 6 0. 74 average value 88.9
3 0.18 [Note] 1. Tests were conducted on 10 cases in both Examples and Comparative Examples. 2. The average value is the average of absolute values. 3. Warpage was measured using the JIS A5209 Ceramic Tile Warpage Test Method. [Effect] From the results of the comparative test, it is understood that the angle of the tiles of the present invention is close to 90°, and not only is the warpage small, but also the variation is small. This is the original. By using a sagger pot equipped with Ming's moving horse chestnuts, we were able to provide an exterior tile with a bending angle of approximately 90°, which was previously impossible to manufacture.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the present invention, and shows a perspective view of a sagger. FIG. 2 is a perspective view showing a cross section of the sagger in FIG. 1 taken along line II'. Figures 3 and 4 are perspective views of horse chestnuts used in the present invention. FIG. 5 is an embodiment of the present invention, and is a partially sectional perspective view showing another part of an unfired curved tile placed in the sagger of the present invention for firing. FIG. 6 is an embodiment of the present invention, and is a partially sectional front view showing a stack of saggers on which unfired curved tiles are placed for firing. 1...Sagger 2...lFI wall 3...Upper bottom plate 4...Lower bottom plate 5...Movable space 6...Conker 7...Obliquely inclined tip of the bottom plate 8...・Unfired bent tile 9...Movement space 10...Empty pot Figure 5 Figure 6

Claims (6)

[Claims] 1. In a sagger with an H-shaped cross section, consisting of a square bottom plate with side walls installed on a pair of opposing sides, the bottom plate consists of a lower base plate and an upper base plate with a smaller area than the lower base plate, and has a movable open space on the lower base plate. , the movable open space is placed at the end of the lower bottom plate in the area where the side wall is not installed, and the movable open space has a shape that is approximately the same as the open space, a width smaller than the width of the open space, and a thickness approximately equal to the thickness of the upper base plate. An exterior curved tile with a movable conker, which is the same and has a movable conker with a downwardly sloping slope at the tip, and the tip of the slope of the conker forms the top end of the tile-mounted surface of the bottom plate. H-shaped sagger pot. 2. The H-shaped exterior curved tile provided with a movable conch according to claim 1, wherein the bottom plate is a bottom plate of an H-shaped cross-sectional sagger pot and a plate with a smaller area placed on top of the bottom plate to form a movable space. Sagger. 3. The H-shaped sagger for exterior curved tiles equipped with a movable conker according to claim 1 has a sagger in which the oblique tip of the slope of the movable conker protrudes outward from the tip of the lower bottom plate, and the bent portion is horizontally directed. has an angle slightly less than 90 degrees with respect to the
An unfired curved tile with a small angle between the base of the curved part of the tile and the top of the curved part of the hanging part is placed, and high-purity alumina is interposed between the tip of the moving conker and the base of the curved part of the unfired tile. A method for firing an exterior curved tile having a bending angle of approximately 90 degrees, the method comprising: butting the two together and firing the curved tiles. 4. Next, an empty pot was placed on the lowest stage, and then the oblique tip of the slope of the moving conker of the H-shaped sagger for exterior curved tiles provided with the movable conker according to claim 1 was made to protrude outward from the tip of the lower bottom plate. An unfired curved tile whose curved part has an angle slightly smaller than 90 degrees with respect to the horizontal direction and whose angle between the base of the curved part of the tile and the top of the curved part of the hanging part is small is placed in the sagger of the moving horse chestnut. High-purity alumina is interposed between the diagonal tip and the base of the curved part of the unfired curved tile, and the two are placed abutting each other, and the sagger is placed one step at a time so that the hanging parts of the tiles do not come into contact with each other. As in the position,
A method for firing exterior curved tiles having a bending angle of approximately 90 degrees, which is characterized by stacking and firing the exterior curved tiles in alternating layers. 5. The method according to any one of claims 3 to 4, wherein high-purity alumina is applied to one or both of the bent base of the unfired tile and the oblique tip of the sagger bottom plate, and the two are butted and fired. How to fire exterior curved tiles. 6. The curved part of the unfired curved tile is 90 degrees from the horizontal direction.
The exterior according to any one of claims 3 to 5, wherein the tile is an unfired curved tile having an angle slightly smaller than 100 degrees, and a small angle between the base of the curved part of the tile and the top of the curved part of the hanging part. How to fire curved tiles.