JPH04366389A - Shelf plate for kiln - Google Patents

Abstract

PURPOSE:To improve a securing strength of a post to a shelf plate body by providing the post integrally with the body. CONSTITUTION:A shelf plate 11 is composed by adhering three U-shaped sectional posts 13 to a rectangular shelf plate body 12, for example, with SiC mortar 15. In this case, a groove 18 extended in a direction perpendicular to an engaging direction is formed on the post 13, and a groove 14 opposed to the groove 18 is also formed on the body 12. The mortar 15 is solidified to a bar at the groove 18 part to exhibit an operation like a so-called 'clamping pin' to prevent removal of the post 13 from the body 12.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf board for a kiln used for firing ceramic products such as large tiles.

0002

[Prior Art] For example, when firing a ceramic product such as a large tile, the product to be fired is placed on a refractory shelf and heated and fired while being supported by the shelf. I have to. In this case, the shelf board that supported the product to be fired is
For example, they are stacked in multiple tiers on a trolley and sent in that state through the tunnel furnace.In order to ensure space between the stacked shelves, the shelves and their four corners are supported on the trolley. The shelves are constructed by arranging the pillars alternately.

[0003]In recent years, production lines for ceramic products such as large tiles mentioned above have become unmanned (automated).
Progress is being made, and efforts are being made to automate the work of assembling shelves as described above. However, since it is difficult to automate the work when shelves and columns are stacked alternately as described above, in recent years, shelves with integrated columns, in which the columns are fixed to the shelf body, have been provided. .

[0004] As shown in FIG. 8, this type of shelf board is composed of a rectangular shelf main body 1 and pillars 2 attached to the main body 1, for example, at the four corners thereof. The pillar portion 2 is shown in FIG.
As shown in FIG. 2, it is formed into a block shape with a substantially U-shaped cross section that fits across the edge of the shelf body 1, and is fixed to the shelf body 1 with an adhesive 3 such as fireproof mortar. ing.

[0005] By using such shelf boards, it becomes easy to automate the work of assembling shelves. In addition, since the support columns 2 are arranged symmetrically on both the upper and lower surfaces of the shelf body 1, in order to prevent bending deformation of the shelf body 1 as much as possible, each time the shelf is used, for example, it is turned upside down. It is also possible to respond to the following.

[0006]

[Problems to be Solved by the Invention] However, in the above-mentioned conventional shelf board, although the support pillars 2 are bonded to the shelf body 1 with fireproof mortar 3, the adhesive force is not very high. . For this reason, for example, there is a risk that the support section 2 may come off from the shelf body 1 during use, and if the support section 2 comes off from the shelf body 1 in this way, it may lead to a collapse accident. .

[0007] Therefore, in the conventional shelf boards with integrated support columns as shown in FIGS. 8 and 9, the reliability of the adhesive strength of the support sections 2 is poor, and this makes it difficult to achieve unmanned operation (automation). This had become an obstacle.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a shelf body with a support section integrally with the support section, and to improve the adhesion strength of the support section to the shelf main body. To provide shelf boards for kiln furnaces.

[0009]

[Means for Solving the Problems] The shelf board for a kiln of the present invention includes:
A column having a substantially U-shaped cross section that fits across the shelf body is fixed to the peripheral edge of the shelf body using adhesive, and the inner surface of the shelf body is fixed to the peripheral edge of the shelf body. It is characterized in that a groove extending in a direction intersecting the direction in which the support column is fitted is formed in a portion that contacts the plate surface.

0010

[Operation] According to the above means, the support column is fitted from the outside to the peripheral edge of the shelf body with the adhesive placed on the adhesive surface with the shelf body, and the adhesive solidifies. At this time, the adhesive is solidified while being filled in the grooves formed in the support pillars.

[0011] In this groove, the adhesive material hardens into a rod shape extending in the direction in which the support column is inserted, in other words, in the direction that intersects with the removal direction. It comes to function like a retaining pin that prevents the plate from being pulled out from the main body. As a result, the support column becomes difficult to come off from the shelf main body, and the fixing strength is improved.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. First, FIG. 1 shows the overall structure of a shelf board 11 according to this embodiment, which is used for example for firing large tiles. It is constructed by attaching the section 13.

The shelf body 12 is made of a refractory material, in this case Si.
It is formed into a rectangular plate shape from C (silicon carbide), and the plate surface has four grooves extending inward from each side to alleviate thermal shock.
A book slit 12a is provided. Also, as will be described in detail later, the support portion 1 of the peripheral edge of the shelf body 12
A groove portion 14 is formed at the portion where the portion 3 is attached.

The support column 13 is made of, for example, a mullite refractory material, and has a generally circular cross section that fits into the edge of the shelf body 12 from above and below, as shown in FIGS. 2 and 3. It is formed into a block shape. Although the shape of the support column 13 may have a corner, it is preferable that the corner be chamfered so as to prevent the corner from being damaged. The support column 13 is fitted into the peripheral edge of the shelf main body 12 from the outside and fixed with an adhesive such as SiC mortar 15.

[0015] In this case, the support portion 13 is attached to the shelf body 1.
2, the traveling direction of the truck 16 (see FIG. 4) (
1), two pieces are located at both ends of one side, and one piece with a larger length is located at the center of the other side. Three are set up.

As shown in FIG. 4, the shelf board 11 is used by being stacked in multiple stages on a cart 16, with a product 17 to be fired, such as a large tile, placed on the top surface of the shelf main body 12. Ru. At this time, the shelf boards 11 are stacked up so that the respective support portions 13 are overlapped with each other. In addition, in this case, if the shelf board body 12 is bent and deformed, the fired product will be warped accordingly, so in order to prevent bending deformation as much as possible, the shelf board 11 is used only once, for example. Each time it is used, it is flipped upside down.

Now, as mentioned above, the support column 13 is attached so as to be fitted into the shelf body 12.
A groove portion 18 is formed in a portion of the inner surface of the support portion 13 that is in contact with the upper surface of the shelf body 12 in FIG. The groove portion 18 has a substantially semicircular cross section and is formed to extend in the direction in which the short side of the shelf body 12 extends, that is, in a direction perpendicular to the direction in which the support portion 13 is fitted.

On the other hand, in this embodiment, a groove 14 is also formed on the upper surface of the shelf body 12 at a portion where the support column 13 is attached. This groove portion 14 also has a substantially semicircular cross section and is formed to extend in the direction in which the short side of the shelf body 12 extends. As shown in the figure, the groove portion 18 and the groove portion 14 are arranged to face each other.

In the above structure, when adhering the support pillars 13, the shelf board body 12 formed as described above is
SiC mortar 1 is placed on the area where the support column 13 is to be attached.
5 is applied, and the three support portions 13 formed as described above are fitted from the outside. And SiC
As the mortar 15 hardens, the support column 13 is fixed to the shelf body 12.

At this time, as shown in FIG.
The iC mortar 15 is solidified while filling the space formed by the grooves 18 and 14 and having a substantially circular cross section. In this space, the SiC mortar 15 solidifies into a rod shape extending in a direction perpendicular to the insertion direction of the support column 13, in other words, the extraction direction.

In the shelf board 11 of this embodiment, Si solidified into a rod shape is formed in the space formed by the grooves 18 and 14.
The C mortar 15 functions like a retaining pin that prevents the support column 13 from being pulled out from the shelf body 12. Therefore, compared to the conventional structure in which the inner surface of the support 2 is flat and the support 2 is easily detached from the shelf main body 1, the adhesive strength between the support 13 and the shelf main body 12 is improved, and the support 13 could be made difficult to come off from the shelf board main body 12.

Incidentally, in experiments conducted by the present inventor, the adhesive strength of the support column 13 of this embodiment was dramatically improved by 1.7 times as compared to the conventional structure shown in FIGS. 8 and 9. As a result, in the shelf board 11 of this embodiment, the shelf board main body 12 of the support section 13
It is possible to significantly improve the reliability of the adhesive strength to the film, and it can greatly contribute to unmanned (automated) firing lines.

In the above embodiment, the groove 14 is also formed on the shelf body 12 side, but even if this groove 14 is not provided, if the groove 18 is formed at least on the support column 13 side, sufficient adhesion can be achieved. The effect of improving strength can be obtained.

Further, in the above embodiment, the shelf body 12 is
In contrast to the case where the pillars 13 are made of iC, the pillars 13 are not made of SiC but are made of mullite refractory. This is to prevent this. in this case,
In order to make the support column 13 made of SiC, it is preferable to coat the upper and lower contact surfaces with alumina, mullite, etc. to prevent fusion.

FIGS. 5 to 7 show different embodiments of the present invention. In the present invention, as shown in FIG. 5, grooves 22 may be formed on both upper and lower surfaces of the inner surface of the support column 21. In addition, as shown in FIG.
A plurality of grooves 24 having a V-shaped cross section may be formed in the column 3, and a wide groove 26 may be formed in the column 25, as shown in FIG. Various things can be considered.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope of the gist.

[0027]

[Effects of the Invention] As is clear from the above explanation, according to the shelf board for a furnace of the present invention, the support part is fitted into the part of the inner surface of the support part that is in contact with the plate surface of the shelf main body. Since the grooves extending in the direction intersecting the direction are formed, the shelf body has the support pillars integrally, which has the excellent effect of improving the adhesion strength of the support pillars to the shelf body. It is something to play.

[Brief explanation of the drawing]

[Fig. 1] A perspective view of a shelf board showing an embodiment of the present invention.

[Figure 2]
A perspective view of the support column shown upside down from Figure 1.

[Figure 3] Longitudinal front view of main parts

[Fig. 4] Front view schematically showing how shelves are assembled on a trolley

FIG. 5 is a front view of a support column showing another embodiment of the present invention.

FIG. 6 is a front view of a support column showing another different embodiment of the present invention.

FIG. 7 is a front view of a support column showing still another embodiment of the present invention.

[Figure 8] A diagram equivalent to Figure 1 showing a conventional example

[Figure 9] Diagram equivalent to Figure 3

[Explanation of symbols]

Reference numeral 11 indicates a shelf board, 12 indicates a shelf main body, 13 indicates a support section, 14 indicates a groove section, 15 indicates SiC mortar (adhesive material), and 18 indicates a groove section.

Claims (1)

[Claims] Claim 1: A support section having a substantially U-shaped cross section that fits across the shelf main body is fixed to the peripheral edge of the shelf main body with an adhesive, wherein the inner surface of the support support section is fixed to the peripheral edge of the shelf main body. A shelf board for a kiln, characterized in that a groove portion extending in a direction intersecting a direction in which the support pillars are fitted is formed in a portion of the shelf main body that is in contact with a plate surface.