JPH1149574A - Oven tool for firing platelike pottery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oven tool by which a large number of platelike pottery pieces per unit area can be fired without causing any nonuniformity of firing of the pottery pieces. SOLUTION: In this oven tool consisting of a pedestal 1 and setters 4, each of the setters 4 is inserted into the pedestal 1 and held in that state. The pedestal 1 has openings 8 in its upper surface and also is provided with the corresponding grooves 3 in each of which one inclined face 11 is formed at least on its one side 12 so that the opening 8 is wider than the groove bottom. Also, each of the setters 4 is provided at its end 13 to be inserted, with an overhanging part 6 in the direction of the thickness, to hold the setter 4 in the pedestal 1 by inserting and fitting the end 13 into one of the grooves 3. Further, the pedestal 1 is provided on its upper surface, with projecting parts 2 each having an inclined face 14 which, together with the inclined face 11 of one of the grooves 3, forms a continuous plane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kiln tool for firing flat ceramics, which is used for firing flat ceramics such as flat tiles and ceramic plates.

[0002]

2. Description of the Related Art Flat ceramics such as flat tiles and ceramic plates are fired in a tunnel furnace or the like after being arranged vertically on kiln tools. As shown in FIG. 1, this kiln tool includes a receiving base, a plug-in type support pin, and a setter. However, in such a conventional method, "the support pin portion is easily broken", "there is rattling when the frequency of use is increased", and "the upper end portion of the roof tile contacts when the lower end portion of the adjacent roof tile is displaced. In order to prevent this, the interval between the support pins is set wide, so that the number of fired sheets per unit area is limited. " Furthermore, the roof tiles are supported at three points: a pedestal section, a support pin section, and a setter section. However, due to the rattling of the setters and the displacement of the lower end of the roof tiles, the angle of the roof tiles changes, and the adjacent roof tiles are not parallel. For this reason, the flow of the firing gas is also non-uniform, which has caused variations in firing. To solve such problems, the following methods have been proposed, but are not sufficient. For example, Japanese Unexamined Patent Publication No. Hei 8-105694 discloses a kiln tool comprising a cradle portion, a support pin portion, and a setter portion, in which the support pin portions are left-right independent or left-right integrated. Even by this method, the support pin portion is easily broken, rattling, the number of sintering per unit area is limited because the interval of the support pin portion is wide, the flow of the sintering gas becomes non-uniform, and the cause of the variation in firing. There are similar problems as described above. Japanese Patent Application Laid-Open Nos. 8-105695 and 8-210784 disclose a device in which a support portion, a support pin portion, and a setter portion are integrated by providing a stacking portion of a tile on a support pin portion. I have. However, in this case, the tile is likely to be detached from the pedestal part, and therefore, the angle with the adjacent tile changes and becomes non-parallel, so that the flow of the firing gas becomes non-uniform and causes a variation in firing. There is a problem.

As described above, in the conventional kiln tool, (1) the setter is not fixed and is unstable. (2) Since the support pin is a plug-in type, it is easily broken. (3) Since the intervals between adjacent tiles are not uniform and are not parallel, the flow of the firing gas becomes uneven, which causes uneven firing. (4) Since the interval between the support pins is wide, the number of fired sheets per unit area is limited. (5)
Since it is a method of assembling the cradle portion, the support pin portion, and the setter portion, there has been a problem that the work of assembling the shelf becomes longer.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, has no variation in firing, has a large number of fired pieces per unit area, and has a short shelf assembly work time. The purpose is to provide kiln tools.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a flat ceramic sintering kiln tool comprising a pedestal and a setter, wherein the setter is inserted and held in the pedestal, and an opening is formed on an upper surface of the pedestal. A groove having a slope formed on at least one side surface of which the opening is wider than the bottom, and a bulge in the thickness direction at an end of the setter inserted into the groove of the pedestal. Provided, whereby the end of the setter is inserted and fitted into the groove of the pedestal,
A kiln tool for firing plate-like ceramics, wherein the setter is held on the receiving table. Further, the present invention is the above-described kiln tool for sintering a plate-shaped ceramic, wherein a convex portion having an inclined surface continuous with the inclined surface of the groove portion of the pedestal is provided on an upper surface of the pedestal. In addition, the present invention provides the pedestal, wherein the angle of the inclined surface of the groove portion is 90 degrees with respect to the upper surface of the pedestal.
It is a kiln tool for sintering plate-like ceramics as described above, wherein the kiln has a temperature of more than 150 ° and less than 150 °. Further, the present invention is the flat plate-shaped ceramic firing kiln tool described above, wherein the shape of the bulging portion provided in the thickness direction at the end of the setter is a wedge shape, a columnar shape, or a spherical shape. . The angle of the inclined surface of the groove of the pedestal is set to 9 with respect to the upper surface of the pedestal.
The reason why the angle is more than 0 ° and 150 ° or less is that productivity is most preferable in this range.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. 2. A kiln tool for firing flat ceramics comprises a pedestal 1 and a setter 4, and reference numeral 5 denotes a flat ceramic. More specifically, FIG.
As shown in FIGS. 4 and 5, a plurality of grooves 3 of the receiving table 1 are provided at equal intervals, and the grooves 3 are provided with openings 8 on the upper surface 9 side of the receiving table 1, and side surfaces 12 and 12 ′. And a bottom 10. The angle α of the side surface 12 with respect to the upper surface 9 is set to be the inclined surface 11 exceeding 90 °. The opening 8
The angle β of the side surface 12 ′ with respect to the upper surface 9 is set so that the width W1 of the bottom surface 10 is larger than the width W2 of the bottom portion 10. A convex portion 2 is formed on an upper surface 9 of the cradle 1, and one side surface 14 of the convex portion 2 is formed on the inclined surface 11 of the groove 3.
And a continuous inclined surface. As shown in FIG. 7, the convex portion 2 may be continuous in the width direction of the receiving table 1 (vertical direction with respect to the plane of FIG. 2), or may be formed as one or more blocks. It is preferable that the angle α of the inclined surface 11 is more than 90 ° and 150 ° or less.

The end 13 of the setter 4 is provided with a bulging portion 6 in the thickness direction (the width direction of the groove), and the maximum thickness H1 (the width direction of the groove) is obtained by adding the bulging portion 6 and the setter 4. The maximum thickness measured in the same direction) is preferably substantially the same as the width W1. Also, the lowermost end 1 of the end 13
5 has a thickness H2 larger than the width W2 of the bottom portion 10 of the groove 3. Although the shape of the bulging portion 6 is a wedge shape similar to the shape of the groove portion 3 of the cradle 1 in FIG. 6, a cylindrical shape, a spherical shape, and other shapes can be selected. The bulging portion 6 of the setter 4 may be provided at two places on both sides of the end portion 13 of the setter 4 as shown in FIG. 4, or at three places including the center, or over the entire surface of the end portion 13. Either may be provided.

[0008]

When the end 13 of the setter 4 is inserted into the groove 3 of the pedestal 1 and leans along the inclined surface 11 of the groove 3, the bulging portion 6 of the end 13 of the setter 4 is moved to the groove 3 of the pedestal 1. And the setter 4 does not shake. After setting the setter 4 on the cradle 1, the flat ceramics
And pass it through a firing furnace.

[0009]

As described above, since the swelling portion at the end of the setter is fitted into the groove provided in the pedestal, the setter is firmly held by the pedestal and does not wobble. The intervals are kept uniform and parallel, and the number of fired pieces per unit area of the flat ceramic can be increased,
In addition, the flow of the firing gas in the furnace can be made uniform, and variations in firing can be prevented. In addition, since the setter is received by a convex part having a side surface (slope surface) that is continuous with the slope surface of the groove of the cradle,
The setter can be kept in a more stable state. Further, since the angle of the inclined surface of the groove of the pedestal is more than 90 ° and 150 ° or less with respect to the upper surface of the pedestal, the number of fired pieces per unit area of the flat ceramic can be further increased. Also,
Since the shape of the bulge at the end of the setter is wedge-shaped, cylindrical, or spherical, the wedge action allows the setter to be firmly held by the pedestal.

[Brief description of the drawings]

FIG. 1 is a view showing a conventional kiln tool.

FIG. 2 is a view of a kiln tool according to the present invention.

FIG. 3 is a sectional view of a kiln tool according to the present invention.

FIG. 4 is a diagram of a cradle according to the present invention.

FIG. 5 is a diagram of a setter according to the present invention.

FIG. 6 is a view of a setter according to the present invention.

FIG. 7 is a view of a convex portion according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... receiving stand, 2 ... convex part, 3 ... groove part, 4 ... setter, 5 ... flat ceramic, 6 ... bulging part, 7 ... support pin, 8 ... opening part,
9 ... top surface, 10 ... bottom portion, 11 ... inclined surface, 12, 12 '...
Side surface, 13: end portion, 14: side surface (inclined surface), 15: lowermost end portion.

Claims (4)

[Claims] 1. A flat plate-shaped ceramic firing kiln tool comprising a pedestal and a setter, wherein the setter is inserted and held in the pedestal, has an opening on the upper surface of the pedestal, and the opening is a bottom part. A groove portion having a wider inclined surface formed on at least one side surface is provided, and a swelling portion is provided at an end portion of the setter inserted into the groove portion of the pedestal in a thickness direction, whereby the end portion of the setter is provided. Characterized in that the setter is held in the receiving table by being inserted and fitted into the groove of the receiving table. 2. The kiln tool according to claim 1, wherein a convex portion having an inclined surface continuous with the inclined surface of the groove of the pedestal is provided on an upper surface of the pedestal. 3. The flat porcelain according to claim 1, wherein the angle of the inclined surface of the groove of the pedestal is more than 90 ° and 150 ° or less with respect to the upper surface of the pedestal. Kiln tool for firing. 4. The kiln tool according to claim 1, wherein the bulging portion provided at the end of the setter in the thickness direction has a wedge, column, or sphere shape.