JP2001026476A - Setter for flat plate type clay roof tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to prevent the degradation in productivity by enabling the utilization of setter of the conventional dimensions and sizes in spite of flat plate type clay roof tiles provided with snow guard projections of a large projection height on their front surfaces. SOLUTION: The flat plate type clay roof tile 2 having the snow guard projection 21 is placed on the lower setter 3 and further, the upper setter 3a is stacked thereon in such a manner that their legs 31 and 31a are aligned one above the other and that the flat plate type clay roof tile is placed thereon. The side edge portions 34 of the setters 3a corresponding to the positions of the snow guard projections 21 of the flat plate type clay roof tiles 2 placed right below the flat plate type clay roof tiles placed thereon when these setters and the flat plate type clay roof tiles are stacked stepwise to plural stages are provided with notched recessed parts 32 not interfering with the projections 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a setter for flat clay tiles for stacking flat clay tiles in a firing furnace when firing a flat clay tile. In particular, the present invention relates to a setter suitable for a flat clay tile having a large snow stopper on the top surface of the front edge of the tile.

[0002]

2. Description of the Related Art Conventionally, when a flat clay tile having a flat shape as a whole is fired in a suitable kiln such as a tunnel kiln or a shuttle kiln, as shown in FIG. The clay clay roof tiles 2 are placed one by one in a horizontal state, and both end legs 11 of the lower setter,
The upper setter 11 has the same legs 11, 11 placed thereon, and the setters are stacked in a plurality of stages, placed in a furnace, and fired. Since these setters are fired together with the clay tile, which is the object to be fired, they are made of a ceramic material such as silicon carbide which has excellent high-temperature strength and thermal conductivity. Because of the support, the flat clay tile 2 has an advantage that firing deformation such as twisting is less likely to occur.

[0003] In the firing method using such a flat clay tile setter, in order to increase the storage efficiency in the firing furnace, the flat clay tile to be fired and the setters disposed above and below it. Each dimension is set so that the interval between the and is as narrow as possible. Therefore, the most mass-produced flat tiles can be housed in the furnace with the best storage efficiency because they have a flat shape and few irregularities. In the case of roof tiles, since the height of the legs 11 of the setter must be increased to accommodate the snow stopper projections, there is a problem that the storage efficiency is extremely reduced and productivity is extremely poor. there were. For this reason, since the height of the snow stopper cannot be designed to be sufficiently large, there is also a problem that the snow stopper effect is deteriorated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and is directed to a flat clay tile having a large snow stopper having a large projection on the upper surface thereof. Provided is a setter for a flat clay tile which can use a setter having a conventional size and shape and can prevent a decrease in productivity.

[0005]

SUMMARY OF THE INVENTION The above-mentioned problem is solved by a flat-type clay which can be stacked by placing a flat-type clay tile having a snow stopper on the upper surface of the front edge, which will be described in detail below. A tile setter for a flat clay tile according to the present invention, wherein a cutout recess is provided in a side edge portion corresponding to a position of a snow stopper of a flat clay tile placed immediately below, which is a tile setter. Can be solved. Further, the present invention can be embodied as a flat clay tile setter for a form in which reinforcing ribs are provided along the cutout recesses and the reinforcing ribs are extended to both right and left sides.

In the flat clay tile setter according to the present invention, which can be stacked, as described above, the snow stopper of the flat clay tile placed directly below, which is the object of the present invention, is provided on the upper surface of the front edge. Since it is provided, a cutout recess is provided in a portion corresponding to the position of the snow stopper projection in the side edge portion of the upper setter. As a result, the snow stopper projection portion of the plate clay clay tile immediately below is arranged in the space of the cutout recess without contacting the setter member immediately above, so that even in the case of a large snow stopper projection having a large projection size. Stacking can be done as before. Therefore, an advantage that the storage efficiency does not decrease is obtained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a flat clay tile setter according to the present invention will be described with reference to FIGS. FIG. 1 is a view showing the relationship between the flat clay tile 2, the lower setter 3, and the upper setter 3 a in the present invention in a state where the flat clay tile 2 is opened up and down. An example of a combination in which the setter 3a described above is placed thereon and the legs 31, 31a of the setter 3a are vertically aligned and can be stacked. In this stacked state, as shown in the figure, each setter 3, 3a stacks a plurality of setters such that the legs 31a of the upper setter are placed on the legs 31, 31 below the setters 3, 3a. On each of the setters 3 and 3a, one flat clay tile 2 having a snow stopper projection 21 on the front edge upper surface 20 is placed one by one. (Tile placed on the setter 3a is omitted)

According to the present invention, a flat clay tile 2 having such a snow stopper 21 on its front edge upper surface 20 is placed on the flat clay tile 2 and can be stacked in this manner. The premise of the setter is that it is characterized by a flat clay tile 2 placed directly below as shown in FIG. 1 and FIG. 2 which is a schematic cross-sectional view of the stacked state at the center of the setter.
The notch recess 32 is provided in the side edge portion 34 of the setter 3a corresponding to the position of the snow stopper projection 21. The cut-out recess 32 needs to be formed in a shape having a margin so that the snow stopper protrusion 21 and the member of the setter 3a located immediately below do not interfere with each other.

In the present invention, the leg 3 of the setter is used.
A reinforcing rib 33 is formed between the two side portions provided with 1a, and a plurality of (four in FIGS. 1 and 2) setter members are raised in the vertical direction on a convex strip. The placed flat-type clay roof tile 2 is supported from the back surface. In the cutout recess 32 of the present invention, a reinforcing rib 33a is provided along the edge, and the reinforcing rib 33a is extended to both right and left sides. It is preferable to form by setting from the viewpoint that the decrease in strength can be compensated for, and particularly, the high-temperature strength of the setter is maintained.

Further, the notch recess 3 for the snow stopper projection is provided.
1 and 2, if a ventilation hole 35 of an appropriate size is formed in a substantially central portion of the setter 3, a heating atmosphere can be circulated at the time of firing. The advantage that the unevenness in the firing temperature of the flat clay tile 2 can be reduced.

Further, as exemplified in FIG. 3, the reinforcing ribs 33 and the legs 31 provided on the setter 3 are respectively positioned symmetrically or rotationally symmetrically on the upper surface and the lower surface of the setter 3, and have a height. By being formed in the shape, it can be used reversibly by repeatedly turning up and down. In such a case, the notch recesses 32 for accommodating the snow stoppers are also symmetrically arranged vertically or horizontally.
It is preferable to arrange them individually. If the setter is configured to be reversible up and down in this manner, firing deformation such as slight distortion generated during the firing process is canceled out, so that there is obtained an advantage that the service life of the setter is increased and both the quality and the cost are effective.

Further, in the present invention, as shown in FIG. 4, a setter which can be used upside down and which can be used reversibly can be formed in a plane without providing the ventilation hole 35 as shown in FIG. . In this case, there is obtained an advantage that it is possible to reliably prevent the occurrence of a defect such as a so-called rag drop, in which a foreign substance falls from above and burns on the upper surface of the clay tile during firing. As described above, the ventilation holes 35 can be handled according to the firing environment.

In this way, in the stacking structure as shown, the stacking pitch is, for example, about 7
In the case of 0 to 80 mm, in the case of the conventional type setter, the height of the snow stopper projection could not be designed to be 30 mm or more, but in the case of the setter of the present invention, the height was set to 55 mm maximum. It became possible to design up to a large size. According to the present invention, the height of the snow stopper can be approximately doubled in this way, so that the degree of freedom in design is increased and the snow stopper effect can be substantially improved. Became. In addition, there is an advantage that the service life of the setter can be extended by reversible use by turning it upside down.

[0014]

Since the setter for a flat clay tile of the present invention is constructed as described above, even if it is a flat clay tile having a large snow stopper having a large projection height on the upper surface. Since a setter having a conventional size and shape can be used, a decrease in productivity due to a decrease in storage efficiency can be effectively prevented.
Further, there is an excellent effect that a flat clay tile having a great snow-blocking effect can be produced. Therefore, the present invention has a very large industrial value as a setter for a flat clay tile which has solved the conventional problems.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view for explaining an embodiment of the present invention.

FIG. 2 is an essential part cross-sectional view across a notched recess showing the embodiment;

FIG. 3 is a perspective view showing another embodiment.

FIG. 4 is a perspective view showing another embodiment.

FIG. 5 is a developed perspective view showing a relationship between a conventional setter and a clay tile.

[Explanation of symbols]

2 flat clay roof tiles, 20 front edge top surface, 21 snow stopper projections, 22, 23, 3 setters, 3a setters, 3
1, 31a leg, 32 notch recess, 33 33a reinforcing rib, 34 side edge, 35 ventilation hole.

Claims (2)

[Claims] 1. A setter for a flat-type clay tile having a snow stopper projection on an upper surface of a front edge portion of the flat-type clay tile and capable of being stacked, the flat-type clay tile being placed immediately below. A setter for a flat clay tile, wherein a notch recess is provided in a side edge portion corresponding to a position of a snow stopper projection of the present invention. 2. The setter according to claim 1, wherein a reinforcing rib is provided along the notched recess, and the reinforcing rib extends to both right and left sides.