JPH0332960Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is used for drying and firing tiles that are used with their curved outer surfaces facing up, such as thick tiles, string tiles, fusuma tiles, crown tiles, etc. The present invention relates to a fired holder, and more particularly to a fired holder having a structure that leaves no traces of support by the fired holder on the curved outer surface side exposed during use.

Prior Art Tiles can be roughly divided into two types according to usage: those that are used with the curved inner surface facing up, such as sleeve tiles and noki tiles, and those that are used with the curved outer surface facing up, such as noshi tiles, fusuma tiles, and crown tiles. It can be divided into those that are

Therefore, depending on how the tile is used, the fired holder for the tile must be configured so that no scars from support by the fired holder will be left on the surface side that becomes the front side. This is to improve the quality and product value of roof tiles.

In this regard, the firing holder described in Japanese Utility Model Application Publication No. 57-97900 has a central frame provided in the center between two parallel underframes, and a columnar tile support part is made to stand upright on this central frame.
The interval between the underframes on both sides is made sufficiently wide so that the tile always falls toward its curved outer surface, and the curved outer surface of the tile is always supported by the pillar-shaped tile support portion.

In addition, the firing holder described in Japanese Utility Model Application Publication No. 54-102557 is provided with a tile support part that straddles two parallel underframes, and also has a lower end support part and a front edge support part of the tile on each underframe. The tile is usually supported on its curved outer side by the tile support.

Furthermore, in the firing holder described in Japanese Utility Model Application Publication No. 55-83693, the curved outer surface side of the tile is usually supported by a pair of pillar-shaped tile supports, one on each side. It's becoming like that.

Problems to be Solved by the Invention In the case of the firing holder described in the above-mentioned Japanese Utility Model Publication No. 57-97900, the curved outer surface side of the tile is always supported by the pillar-shaped tile support part on the central frame, so the present invention is applicable. It is not suitable as a firing holder for Noshi tiles, fusuma tiles, crown tiles, etc., which are used with the curved outer surface of the tiles facing up.

Moreover, the firing holder is configured such that the height of the central frame in the cross-sectional shape is lower than the underframes on both sides, so that the lower end of the tile does not touch the central frame. However, the underframe merely bears the weight of the tiles. On the other hand, since the central frame bears the bending load of the tiles supported by its columnar supports, the central frame, which has a small height in cross-section, quickly bends in a single tile firing process. The problem is that it gets too hot and cannot withstand repeated use.

In addition, in the case of the firing holder, it is desirable to provide the lower end supports of the tile as protrusions on the underframes on both sides to stabilize the support state of the tile, but if such lower end supports are provided, This restricts the shrinkage of the tile (the tile shrinks toward the inner surface of the curve so as to increase the degree of curvature), and as a result, shrinkage distortion occurs, resulting in substandard (defective) tiles.

In the case of the firing holder described in the above-mentioned Japanese Utility Model Publication No. 54-102557, it is not impossible to support the curved inner surface of the tile by leaning it against the square-shaped tile support part. However, if this is done, two places on the left and right sides of the inner surface of the tile will come into contact with the left and right corners of the square-shaped tile support part. Therefore, during the firing process, the tile support part prevents the tile from shrinking toward the curved inner surface, increasing the degree of curvature, and as a result, shrinkage distortion occurs and the tile becomes defective. However, it is not suitable for the above-mentioned usage mode.

The firing holder described in Japanese Utility Model Application Publication No. 55-83693 has exactly the same problem.

In the end, in order to solve each of the problems mentioned above,
As in the firing holder described in the above-mentioned Japanese Utility Model Publication No. 57-83693, it is necessary to provide a pillar-shaped tile support part on the central frame so that the tile can be supported only in one place, and moreover, the curved inner surface side can be supported.

Means for Solving the Problems As a means for solving the problems of the above-mentioned prior art, the fired holder for crown tiles and the like according to this invention has the following features:
As shown in the example in the drawings, (a) The cross-sectional shape of the underframe 2 is thin and small enough to withstand the weight of the tile A placed vertically on it, and the two underframes 2, 2 are both contact points P with tile A,
The lines connecting the tile P pass inside the center of gravity C of the tile A when viewed from above, and are arranged substantially parallel to each other at an interval W such that the tile A always falls toward its curved inner surface.

(b) Next, a central frame 3 was provided approximately parallel to the longitudinal direction approximately at the center between the underframes 2, 2.

(c) The central frame 3 is integrally provided with a required number of column-shaped support parts 5 that support the curved inner surface side of the tile A at intervals that are sufficient to prevent the front edges of the tile A from coming into contact with each other. The height of the central frame 3 in its cross-sectional shape is set to be large enough to withstand the load of the tile A placed against the support part 5.

(d) Further, on the two underframes 2, 2, a lower end support part 6 and a front edge support part 7 were provided to support the lower end of the tile A at a height where it does not touch the central frame 3.

Note that this firing holder is usually integrally formed of ceramics or heat-resistant steel.

Function Tile A, which is used with the curved outer side facing up, such as thick tiles, string tiles, fusuma tiles, and crown tiles, is oriented vertically (the center of the tile is facing vertically) and attached to the left and right underframes 2. ，
It is placed approximately equally on the lower end support parts 6, 6 of 2, and is brought into contact with and supported by the front edge support part 7. Then, since the center of gravity C of the tile A is located inside the line connecting the contact points P and P with the underframes 2 and 2, the tile A will move due to the action of gravity.
always falls toward the curved inner surface side, and the substantially central portion of the curved inner surface side is supported by the columnar support portion 5 of the central frame 3.

Therefore, the shrinkage of the tile A is not regulated at all during the firing process of the tile A, so that no shrinkage strain occurs in the tile A. Moreover, since the columnar support part 5 supports the curved inner surface side of the tile A, even if it leaves a scar at the contact point, the same tile can be used with the curved outer surface facing up, such as a crown tile. This has no significant impact on product quality or product prices.

Next, the cross-sectional shape of the central frame 3 is formed to a width and height that ensures sufficient strength to support the tile A placed against the pillar-shaped support portion 5 erected thereon, especially for the bending action. Therefore, even if the central frame 3 is used repeatedly in the firing process of tiles, there is no fear that the central frame 3 will become bent and become unusable, that is, it has an excellent service life.

On the other hand, the underframes 2, 2 on both sides are made as thin and small in diameter as possible, and the lower end support part 6 and front edge support part 7 are formed as protrusions with a height that does not allow the lower end of the tile to come into contact with the central frame 3, so that it can be used easily. Further effects can be achieved in saving the amount of materials. Furthermore, since the front edge support part 7 of the tile A supports the lower front edge of the curved outer surface of the tile A, it does not restrict the contraction of the tile A at all, so it only serves to stabilize the leaning support state of the tile A. It is highly reliable in use.

(First Embodiment) FIGS. 1 to 3 show a fired holder 1 entirely integrally cast from heat-resistant steel.

In the figure, numerals 2 and 2 are two approximately rod-shaped underframes. These are thick tiles A placed vertically on top of them.
A line connecting both contact points P and P passes inside the position of the center of gravity (centroid) C when the tile A is viewed from above,
The roof tiles A are arranged substantially parallel to each other with narrow intervals W such that the roof tiles A are always tilted toward the curved inner surface (to the right in FIG. 1), specifically, with a center spacing of about 80 mm.

In the figure, reference numeral 3 denotes a central frame which is also rod-shaped and is disposed substantially parallel to the underframe 2 in the longitudinal direction of the center between the underframes 2, 2. The cross-sectional shape of the central frame 3 is much larger in both width and height than the cross-sectional shapes of the underframes 2 on both sides, and is designed to have sufficient strength to support the tiles A. These underframes 2, 2 and central frame 3
are integrally connected by thin rod-shaped connecting frames 4, 4, .

5 in the figure indicates an appropriate interval for inserting and holding tile A, especially an interval that prevents the front edge of tile A from coming into contact with it in the front-rear direction, specifically, the interval l in Figure 2.
The support part for the upper part of the tile is about 18 mm, and the required number of pillars stand on the central frame 3. The support portions 5 are arranged in a line in the longitudinal direction of the central frame 3.
and is oriented in a certain direction.

That is, this support part 5 has a front surface 5a on which the tile A is propped up and supported, which is a substantially vertical surface, and a reinforcing rib 5a of a considerable width protrudes from the back side to increase the strength. The structure is said to be sufficiently durable. In addition, the height H of the support part 5 is approximately 55
It is said to be around mm.

In the figure, 6, 6 are the lower end support parts of the tile A, and 7, 7 are the front edge support parts, which are arranged symmetrically on the left and right underframes 2, 2, respectively, and are arranged on the left and right sides, respectively, for one support part 5. They are provided in pairs.

The lower end support parts 6, 6 are formed as substantially cylindrical projections rising from the underframe 2, and the upper surface 6a thereof is formed as an inclined surface at an angle suitable for supporting the tile A in a leaning manner. The height of the upper surface 6a of this lower end support portion 6 is approximately 16 mm in total height, which is higher than the height of the top surface of the central frame 3 (approximately 14 mm in total height) (FIG. 3). That is, the lower end of the tile A placed on the lower end support part 6 is connected to the central frame 3.
(Fig. 3).

By the way, the cross-sectional shape of the central frame 3 is 13 mm wide.
It is thick and durable with a height of 14mm. On the other hand, the cross-sectional shape of the left and right underframes 2, 2 is made narrow and small, with a width of 10 mm and a height of 10 mm. In this way, the amount of material used for the underframe 2 is saved, and the lack of height is compensated for by the protruding lower end support portion 6.

Similarly, the front edge support portion 7 of the tile A is also provided as a substantially cylindrical projection rising from the underframe 2. The reason why it is formed as a protrusion is the same as in the case of the lower end support part 6 described above. This front edge support part 7 supports the front edge of the lower edge of the curved outer surface side of the tile A, and when the tile A is placed on the left and right lower end support parts 6, 6, the front edge of the same tile A is exactly in place. At the contact position (Fig. 1) and at a height necessary and sufficient to support the leading edge (h≒10 in Fig. 2).
mm, total height approximately 22 mm).

The fired holder 1 is manufactured as a cast product of heat-resistant steel, but in some cases it may be manufactured as a ceramic molded product or as an assembled product partially employing welding or the like.

The method of using the firing holder 1 having the above configuration is usually to place it on a cart (kiln car), etc., and insert the tiles A one by one vertically from above between the adjacent columnar supports 5, 5. Then, the lower end of the tile is attached to the lower end support part 6,
6, and the front edge of the tile A is brought into contact with the tile front edge support parts 7, 7, so that the curved inner surface side of the tile A is supported by leaning against the support part 5.

(Second Embodiment) The firing holder shown in FIG.
It is characterized by a structure in which the upper surfaces of the left and right underframes 2, 2 are formed as inclined surfaces at an angle suitable for supporting the roof tile A. The rest of the structure, method of use, and effects are substantially the same as those of the first embodiment.

(Third Embodiment) The firing holder 1 shown in FIG. ) is characterized by a protruding configuration.The remaining configuration, method of use, and effects are as follows.
This is substantially the same as the first embodiment described above.

Effects of the invention As detailed above in conjunction with the embodiments, the firing holder of this invention always supports the curved inner surface of the tile A with the support part 5 of the central frame 3;
In particular, tiles that are used with the curved outer side facing up.
The surface of fusuma tiles, crown tiles, etc. can be held, dried, and fired without any scars caused by the support of the holder, which increases the commercial value of crown tiles, etc.
Improve quality.

In addition, since the pillar-shaped support portion 5 of the central frame 3 supports the approximately central portion of the curved inner surface of the tile A at one location, the shrinkage of the tile A during the firing process is not restricted at all.
Since it does not cause shrinkage distortion, it contributes to the production of tiles with high quality and precision.

The lower front edge of the tile A on the curved outer side is connected to the front edge support part 7.
Since it is supported by , it is highly stable when held upright. Furthermore, since the front edge support portion 7 does not restrict the shrinkage of the tile A at all during the firing process, the incidence of defective products can be reduced, and the reliability of use is high.

Since the central frame 3 has a cross-sectional shape that is large enough to support the tile A against the support part 5, this firing holder can withstand repeated firing processes and has an excellent service life.

On the other hand, the underframe 2 is sufficiently small to improve economic efficiency.

[Brief explanation of the drawing]

Figures 1 and 2 are a plan view and partially cutaway front view of a firing holder according to the first embodiment of this invention, Figure 3 is a sectional view taken along the - arrow in Figure 2, and Figure 4 is Fifth
The figure is a partially cutaway front view showing firing holders according to the second and third embodiments of this invention.

Claims (1)

[Scope of Claim for Utility Model Registration] [1] (a) The cross-sectional shape of the underframe 2 is thin and small enough to withstand the weight of the tile A placed vertically on it, and the two underframes 2 , 2, the line connecting the two contact points P and P with tile A passes inside the position of the center of gravity C when tile A is viewed from above, and runs approximately parallel to it at an interval W such that tile A always falls toward its curved inner surface. (b) A central frame 3 is provided approximately parallel to the longitudinal direction at approximately the center between the underframes 2, 2, and (c) The curved inner surface side of the tile A is attached to the central frame 3. A required number of pillar-shaped support parts 5 are integrally provided at intervals such that the front edges of the tiles A do not come into contact with each other, and the height of the central frame 3 in the cross-sectional shape is equal to the height of the pillar-shaped support parts 5. (d) The two underframes 2, 2 have a lower end that supports the lower end of tile A at a height that does not touch the central frame 3. Support part 6
A fired holder for a crown tile or the like, characterized in that it is provided with a leading edge support portion 7. [2] The underframes 2, 2, central frame 3, support portion 5, lower end support portion 6, and front edge support portion 7 described in claim 1 of the utility model registration claim are integrally formed of ceramics or heat-resistant steel. Fired retainers for crown tiles, etc.