JPH0814768A - Tile baking shelf assembly - Google Patents

Abstract

PURPOSE:To provide a tile baking shelf assembly in which glaze is hardly adhered to the assembly when a galzed tile is baked and an irregular baking may not be produced. CONSTITUTION:Tile supporting rods 2 having polygon sectional shapes are mounted between shelf legs 1 and 1 with their ridge liens 4 being directed toward upper ends thereof and then tiles 5 are supported on the supporting rods. It is preferable that the tile supporting rods 2 are made of Si-SiC which is superior in a high temperature strength and a heat-resistance. The tile supporting rods 2 are of solid or hollow in their shapes, or they may be provided with a sharp projection at a central part of each of the sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof tile baking rack, and more particularly to a roof tile baking rack suitable for baking a glazed roof tile.

[0002]

2. Description of the Related Art Conventional roof tile baking shelves usually have a structure in which a shelf plate is horizontally installed between shelf legs that are vertically installed at predetermined intervals, and a roof tile is vertically erected on the upper surface of the shelf plate. Is. However, in the case of firing a glazed roof tile with such a roof tile firing shelf, the lower surface of the roof tile is in close contact with the shelf plate over a wide surface, so that the glaze may be fused to the shelf plate, which may result in poor firing. . Further, since the baking gas is shut off by the shelf plate, there is a risk that uneven baking occurs at the bottom of the roof tile.

Therefore, as shown in FIG. 7, a shallow groove is formed on the upper surface of the shelf board 21, and a roof tile support rod 22 made of metal and having a circular cross section is placed inside the shallow groove, whereby the roof tile 23 and the shelf board 21. Tile firing shelves that prevent close contact with and are also used. However, even in this case, the glaze may be fused to the roof tile support rod 22, and the gap between the bottom surface of the roof tile 23 and the top surface of the shelf board 21 is only a few.
Since it is only mm, the surrounding of the burning gas is bad and the roof tile
There was a risk of uneven burning at the bottom of 23.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and provides a roof tile baking rack that does not easily cause glaze when the glazed roof tile is baked and that does not cause uneven baking. It has been completed to provide.

[0005]

The roof tile firing rack of the present invention made to solve the above problems is a roof tile supporting rod having a polygonal cross section between the rack legs standing upright at predetermined intervals. It is characterized in that the ridgeline is installed with its ridge line facing the upper end.

[0006]

In the roof tile firing rack of the present invention, since the roof tiles are placed on the sharp ridges of the roof tile support rods having a polygonal cross section for firing, the roof tiles and the roof tile support rods come into line contact with each other. Therefore, even when the roof tile is a glazed roof tile, the glaze on the lower surface of the roof tile is prevented from being fused to the roof tile supporting rod. Further, since the tile firing rack of the present invention has the tile support rods installed between the shelf legs without using a shelf plate, the firing gas is not blocked by the shelf plate. Therefore, the surroundings of the gas are good and uneven firing does not occur. Since the roof tile support rod has a polygonal cross section, when the ridgeline contacting the roof tile is worn, the roof tile can be rotated to support the roof tile on another ridgeline.

[0007]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 shows a first embodiment of the present invention.
1 and 1 are shelf legs that are erected at predetermined intervals on a baking trolley 2,
Reference numeral 2 denotes two roof tile support rods directly installed between the shelf legs 1 and 1 without using a conventional shelf plate. The spacing between the shelf legs 1 and 1 is, for example, 1500 mm. Since the roof tile support rod made of metal that has been conventionally used lacks high-temperature strength, a refractory shelf was required on the lower surface thereof, but in the example, Si-SiC excellent in high-temperature strength and heat resistance was used. The roof tile support rod 2 made of steel is used, and if the span is about 1500 mm to 3000 mm, it can be directly installed without using a shelf board. If the ceramic has high strength at high temperature, Si-S
In addition to iC, it is also possible to use roof support rods such as high-purity mullite and silicon carbide.

This Si-SiC is composed of SiC and 25% by weight or less of Si, and is manufactured by a method in which Si powder and C powder are mixed with SiC powder, extrusion-molded, and sintered at 1300 to 1400 ° C. can do. It is also possible to prepare a molded body from carbon and then react with Si to obtain Si-SiC. In addition to this, it can be manufactured by a method of impregnating recrystallized silicon carbide with Si. This Si
-SiC is disclosed in detail in Japanese Patent Laid-Open No. 6-1660 of the present applicant.

The roof tile support rod 2 of the first embodiment is a solid rod having a square cross section, and by fitting it into the V-shaped groove 3 on the upper surface of the shelf leg 1, the ridge line 4 is directed toward the upper end. It is installed. Therefore, when the roof tile is placed on the upper surface and fired, the roof tile and the roof tile support rod 2 come into line contact with each other, and there is no fear that the glaze will be fused to the roof tile support rod 2 even when firing the glazed tile.
Further, when the ridgeline 4 of the roof tile support rod 2 is worn, a new ridgeline can be directed to the upper end by rotating the ridgeline 4 by 90 degrees, and there is an advantage that the service life is extended because it can be repeatedly used.

FIG. 2 shows a second embodiment of the present invention, in which a roof tile supporting rod 2 having a square cross section is used to support the roof tile 5. If you use such a hollow body,
There is an advantage that the section modulus can be increased without increasing the weight. The other points are similar to those of the first embodiment.

In the above embodiment, the roof tile support bar 2 is placed directly on the upper surface of the shelf leg 1, but in the third embodiment shown in FIG. 3, the cross beam 6 is placed on the upper surface of the adjacent shelf leg 1. , This cross 6
The roof tile support rod 2 having a square cross section is placed on the upper surface of the. The cross beam 6 is located only on the upper surface of the shelf leg 1, and does not extend in the direction perpendicular to the paper surface like the shelf board. The use of such a cross beam 6 has an advantage that it is not necessary to make the installation intervals of the shelf legs 1 and the installation intervals of the roof tile support rods 2 correspond one to one.

In the fourth embodiment shown in FIG. 4, a solid roof tile support rod 2 whose cross section is an equilateral triangle is used. In this case, the flat lower surface of the roof tile support bar 2 is directly used as it is for the shelf leg 1 or the cross beam 6.
It is not necessary to form the groove 3 on the upper surface of the shelf leg 1 or the cross beam 6 as in the first to third embodiments. Therefore, there is an advantage that the distance between the two roof tile support rods 2 can be freely adjusted according to the size of the roof tile 5.

In the fifth embodiment shown in FIG. 5, a roof tile support rod 2 having a regular pentagonal cross section is used. Further, in the sixth embodiment shown in FIG. 6, the roof tile support rod 2 having a regular hexagonal cross section is used. When the number of angles increases as described above, the number of ridgelines 4 that can be rotated and used when worn increases, but the cross section gradually approaches a circle and the melting of the glaze at the contact point between the tile 5 and the tile support rod 2 gradually increases. Adhesion is likely to occur, so it is not preferable to make the cross section a polygon having more corners.

In the seventh embodiment shown in FIG. 7, a roof tile support rod 2 having a rectangular cross section is used. In this case, by changing the mounting manner of the roof tile supporting rod 2 as shown by the solid line and the imaginary line in FIG. 7, the intervals between the ridgelines 4 and 4 at the upper end can be changed to a, b, and c. It can be used properly depending on the size of the roof tile and the shape of the roof tile (for example, the presence or absence of a sword).

In each of the embodiments described above, the roof tile support rod 2 is used.
Although the roof tile 5 is supported by the ridgeline 4 of the corner portion of the above, when the roof support rod 2 is formed by the extrusion molding method, if the radius of the ridgeline 4 of the corner portion is reduced, cracks are likely to occur, and conversely, Increasing the radius of the ridgeline 4 facilitates fusion of the glaze on the roof tile 5. Therefore, in the eighth embodiment shown in FIG. 8, a polygonal roof tile support rod 2 provided with a protrusion 7 in the middle of the side is used, and the roof tile 5 is supported by the ridge line 8 of the protrusion 7. The protrusion 7 in the middle of such a side can reduce the radius at the time of molding, and can prevent the glaze of the roof tile 5 from being fused. In the embodiment of FIG. 8, the ridgeline 4 at the corner is 5R or more, and the ridgeline 8 of the protrusion 7 is 2R.

[0016]

As described above, the roof tile firing rack of the present invention fires the glazed roof tile by arranging the roof tile support rods having a polygonal cross-section between the rack legs with the ridge line toward the upper end. Even when the glaze is applied, the glaze is unlikely to adhere to the roof tile support rod, and the surroundings of the gas do not cause uneven burning. In particular, such a roof support rod is made of Si that has excellent high temperature strength and heat resistance.
-Since it is made of SiC, it is possible to construct the shelf assembly of the present invention while keeping the span between the shelf legs as usual. Therefore, the present invention greatly contributes to the industry as a roof tile firing shelf that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a front view showing a second embodiment of the present invention.

FIG. 3 is a front view showing a third embodiment of the present invention.

FIG. 4 is a front view showing a fourth embodiment of the present invention.

FIG. 5 is a front view showing a fifth embodiment of the present invention.

FIG. 6 is a front view showing a sixth embodiment of the present invention.

FIG. 7 is a front view showing a seventh embodiment of the present invention.

FIG. 8 is a front view showing an eighth embodiment of the present invention.

FIG. 9 is a perspective view showing a conventional example.

[Explanation of symbols]

1 shelf legs, 2 roof tile support rods, 3 grooves, 4 ridge lines, 5 roof tiles,
6 transverse girders, 7 protrusions, 8 ridges

Claims (5)

[Claims] 1. A roof tile firing shelf assembly comprising tile roof support rods having a polygonal cross section, which are erected with their ridges toward the upper ends, between shelf legs that are erected at predetermined intervals. 2. The roof tile firing rack according to claim 1, wherein the roof tile supporting rod has a rectangular cross-sectional shape. 3. The roof tile supporting rod is a hollow body.
Shelf assembly for firing roof tiles. 4. The roof tile firing shelf assembly according to claim 1, wherein a horizontal girder is placed between the shelf legs, and a roof tile support rod is installed on the horizontal girder. 5. The roof support rod is made of Si-SiC.
The roof tile shelving assembly according to any one of 1.