JPH0327280Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention improves the durability and maintainability of a sagger in which objects to be fired such as tiles are placed, and also enables uniform firing of objects to be fired. This relates to a sagger for firing.

Conventionally, saggers, which have been used as kiln tools for aligning and placing objects to be fired such as tiles, are generally made of refractory material and are integrally molded, as described in Publication No. 1987-60497. Although things are used,
Saggers are fired at high temperatures along with the objects to be fired, causing distortion, so they are prone to cracking due to repeated use. Even if a small crack occurs, the next time it is used, the cracked area may enlarge and cause damage, or it may become damaged during firing. Because there is a risk of major deformation and distortion of the product, a sagger with a crack in even one place cannot be used even if there is no abnormality in other parts, and because of its poor durability, especially high-grade refractories were used. Saggers are extremely expensive, and integrally molded saggers tend to crack easily, so ventilation holes are usually not provided on the mounting surface. However, there were drawbacks such as differences in the degree of burntness of the products.

In view of this drawback, the present invention forms trapezoidal fitting protrusions that integrally protrude upward at both ends of a plate-shaped mounting plate divided into a plurality of pieces, and a trapezoidal fitting protrusion that integrally protrudes upward. A fitting groove consisting of a trapezoidal cavity corresponding to the fitting protrusion of the mounting plate and an insertion opening opening toward the inner surface corresponding to the thickness of the mounting plate is penetrated between both ends in the longitudinal direction. At the same time, hanging portions facing above the insertion opening are formed to protrude downwardly, and the fitting protrusions at both ends of the mounting plate are loosely fitted into the fitting grooves of the side frames, thereby forming a connection between the side frames. An object of the present invention is to solve the above-mentioned drawbacks by providing a sagger for firing tiles, etc., which is removably inserted and supported by the mounting plate and is spaced apart so as to form a gap between adjacent parts of the mounting plate. ,
An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a sagger body on which objects to be fired such as tiles are arranged and placed, and the sagger body 1 includes a placement part 2 for the objects to be fired, side frames 3, which are separate members from the loading section 2 and are arranged opposite to each other on both sides and serve as overlapping sections when stacking;
3a.

The placing part 2 is made of refractory material and consists of plate-shaped placing plates 4, 4a... divided into a plurality of pieces, and the placing plates 4, 4a... have a plate-like plate at both ends facing the side frames 3, 3a. Forms trapezoidal fitting protrusions 5, 5a that integrally protrude upward.

On the other hand, the side frames 3, 3a are made of refractory material and molded into a rectangular rod shape. A fitting groove 8 consisting of an insertion opening 7 opening toward the inner surface corresponding to the thickness of the placing plates 4, 4a... is formed penetratingly between both ends in the longitudinal direction, and a hanging protrusion facing above the insertion opening 7 is formed. This part forms a hook part 9.

And the fitting grooves 8 of the side frames 3, 3a arranged on both sides
On the other hand, the mounting plates 4, 4a...fitting protrusions 5, 5 on both ends
The fitted state of a is loosely fitted in response to thermal expansion, and the mounting plates 4 and 4a are removably inserted and supported between the side frames 3 and 3a.
... are spaced apart from each other so as to form a gap 10, 10a between the adjacent portions to allow ventilation of the combustion gas.

The sagger main body 1 configured as described above has, for example, side frames 3 and 3a made of an inexpensive refractory material such as cordierite and siyamoto, and mounting plates 4 and 4a that are the mounting portion 2. ... may be made of high-grade refractories such as silicon nitride and silicon carbide, which are excellent in thermal expansion, hot load, etc.

Also, the number of divisions of the mounting plates 4, 4a... is shown in Figure 1, Figure 3.
As shown in the figure, it is possible to arbitrarily set 2 sheets, 3 sheets, etc.

In short, the present invention forms trapezoidal fitting protrusions 5, 5a that integrally protrude upward at both ends of the plurality of plate-shaped mounting plates 4, 4a...
Inside the side frames 3, 3a, trapezoidal hollow portions 6 corresponding to the fitting protrusions 5, 5a of the mounting plates 4, 4a...
A fitting groove 8 consisting of an insertion opening 7 opening toward the inner surface corresponding to the thickness of the mounting plates 4, 4a... is formed penetratingly between both ends in the longitudinal direction, and a fitting groove 8 is formed above the insertion opening 7. The opposing hooking portions 9 are formed to protrude downwardly, and the mounting plate 4,
4a...The fitting protrusions 5, 5a at both ends are loosely inserted and supported between the side frames 3, 3a in a detachable manner, and a gap 10 is provided in the adjacent portion of the mounting plates 4, 4a... , 10a are spaced apart from each other so that the individual mounting plates 4, 4a, . Yes, therefore the mounting plates 4, 4a
It is possible to significantly reduce the incidence of cracks on... and improve durability, and if the warping that occurs on the mounting plates 4, 4a... increases due to repeated use, the sagger body 1 can be removed. By turning it over and using it upside down, the mounting plates 4, 4a...
In order to avoid the problem of warping, durability can be improved, and parts of the mounting plates 4, 4a... or the side frames 3
Even if cracks occur in the sagger 3a, only the defective part can be replaced, and there is no need to replace the entire sagger body 1. This further improves the durability of the sagger as a whole and significantly reduces the cost required for the sagger. Since the side frames 3, 3a are integrally formed, the side frames 3, 3a of the sagger body 1 can reduce
They can be stacked in multiple stages, and the fitting condition between the fitting protrusions 5, 5a and the fitting groove 8 is set in a loosely fitting condition, thereby reducing the difference in thermal expansion caused by the shape and material. By being able to absorb
Since distortion due to thermal expansion on one side can be eliminated, cracks due to distortion can be prevented and the durability of the sagger body 1 as a whole can be improved, and the fitting protrusions 5 of the mounting plates 4, 4a... , 5a and the hooking portions 9 of the side frames 3, 3a are loosely fitted and supported, and due to the locking action of the fitting protrusions 5, 5a and the hooking portions 9, the short sides of the side frames 3, 3a are It is possible to prevent the mounting part 2 from coming off in the direction, and it is also possible to circulate the combustion gas during firing through the gaps 10 and 10a.
It is possible to expect uniform baking without uneven baking between the center and edges of the plate, and to shorten the baking time.
...By being able to arbitrarily set the gaps 10, 10a in accordance with the size of the object to be fired to be placed thereon, it is possible to handle objects to be fired of any size.

Therefore, the sagger body 1 according to the present invention has great practical effects, such as being able to be widely used as a sagger for firing tiles, new ceramic products, and other ceramic products.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention.
The figure is a perspective view of a sagger for firing tiles and the like according to the present invention, FIG. 2 is a sectional view of the main part, and FIG. 3 is a perspective view showing another embodiment. 1...Sagger body, 3, 3a...Side frame, 4, 4a
...Placement board.

Claims (1)

[Scope of utility model registration request] A trapezoidal fitting protrusion that integrally projects upward is formed at both ends of the plurality of plate-shaped mounting plates, and a fitting protrusion for the mounting plate is formed inside one side frame. A fitting groove consisting of a trapezoidal cavity corresponding to the thickness of the mounting plate and an insertion opening opening toward the inner surface corresponding to the thickness of the mounting plate is formed through the insertion groove between both ends in the longitudinal direction, and above the insertion opening. A hanging portion facing the side frame is formed into a hanging protrusion, and the fitting protrusions on both ends of the mounting plate are loosely fitted into the fitting groove of the side frame, and the plate is detachably inserted and supported between the side frames. Also, a sagger for firing tiles, etc., characterized in that the mounting plate is spaced apart so as to form a gap between adjacent parts of the mounting plate.