JP2000009389A - Shelf plate for firing ceramics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent collapse in a ceramic furnace, or the like, by bonding a substantially U-shaped spacer for clamping a shelf plate body to the circumferential fringe part of the shelf plate body through a heat resistant adhesive to constitute a shelf plate for firing ceramic and forming a rib at the circumferential fringe part of the shelf plate body thereby stabilizing the bonding strength. SOLUTION: A shelf plate body 1 is made of refractories, e.g. silicon carbide, into rectangular shape and a rib 4 is formed entirely at the circumferential fringe part thereof. Spacers 2, i.e., substantially U-shaped refractory blocks for clamping the circumferential fringe part of the shelf plate body 1 from above and below, are fixed to the circumferential fringe part of the shelf plate body 1 at four corners thereof, for example. The rib 4 has a width being contained in the opening 14 of the spacer 2 being bonded through a heat resistant adhesive 3, e.g. silicon carbide mortar. Since the protrusion of the rib 4 serves to lock the spacer 2, bonding strength is enhanced and collapse in a ceramic furnace can be prevented effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf used for firing ceramic products such as electronic parts, tiles, and tiles in a kiln or the like.

[0002]

2. Description of the Related Art Conventionally, as a method of firing electronic parts, tiles, tiles, and other ceramic products in a kiln or the like, an object to be fired is placed on a refractory shelf and supported by the shelf. There is a method in which heating and baking are performed in the state of being performed. That is, as shown in FIG. 8, the shelves 11 supporting the article A to be fired are stacked on a carriage 13 in a plurality of stages, and sent to the kiln in that state. In this case, in order to secure a space between the shelves to be stacked, the spacers 12 are fixed to the four corners of the shelves.

As a spacer-integrated shelf board in which such spacers are fixed to the shelf board body, as shown in FIGS. 6 and 7, a rectangular board-shaped shelf board body 10 is provided with spacers 20 at four corners thereof, for example. It has a bonded structure. The spacer 20 is a block having a substantially U-shaped cross section that fits so as to sandwich the edge of the shelf main body 10, and is made of an adhesive material 30 such as heat-resistant mortar.
By this, it is fixed to the shelf main body 10. The spacer-integrated shelf board has the advantages that the work of assembling the shelf boards can be automated, the space between the shelf boards can be accurately secured, and the installation stability is excellent.

[0004]

However, in the above-described conventional spacer-integrated shelf board, although the spacer and the shelf board are adhered with heat-resistant mortar, the adhesive strength is not sufficient, and it is difficult to use them in use. There is a risk that the spacer may come off the shelf body. Therefore, the emergence of a ceramic sintering shelf plate with an increased bonding strength and improved reliability has been desired.

Accordingly, it is an object of the present invention to provide a ceramic firing shelf in which the adhesive strength between the shelf body and the spacer is improved.

[0006]

Under such circumstances, the present inventors have conducted intensive studies. As a result, if a structure in which ribs are formed on the peripheral edge of the shelf body is used, the protrusions that form the ribs will fall out of the spacers. The present inventors have found that the bonding effect is increased by showing a stopping action, and the present invention has been completed.

That is, in the ceramic firing shelf according to the first aspect, a substantially U-shaped spacer fitted to the peripheral portion of the shelf main body so as to sandwich the shelf main body is fixed by a heat-resistant adhesive. In the ceramic firing shelf plate, a rib is formed on a peripheral portion of the shelf body. By adopting such a configuration, the projections forming the ribs exhibit a function of preventing the ribs from coming off from the spacer, and the bonding strength is stabilized. Therefore, the installation stability is improved, and there is no possibility of a collapse accident in a kiln or the like, and the reliability is improved.

Further, the ceramic firing shelf plate of the present invention is characterized in that the opening of the spacer has a longitudinal cross-sectional shape that becomes narrower from the back to the tip. By adopting such a configuration, in addition to the same effect as the invention of claim 1, since the inner wall of the opening and the shelf main body form a wedge shape, the heat-resistant adhesive exhibits a wedge action, and The body becomes more difficult to come off.

Further, the ceramic firing shelf according to a third aspect of the present invention is characterized in that a plurality of ribs are formed in a vertical and horizontal lattice on at least one of a front surface and a rear surface of the shelf main body. By adopting such a configuration, the same effect as that of the first aspect of the invention can be obtained, and the strength of the shelf main body can be increased. In addition, since the plurality of ribs are formed in a lattice shape, a concavo-convex pattern emerges, and the design is excellent and the operator's feelings are relaxed.

Further, in the ceramic firing shelf according to a fourth aspect of the present invention, a plurality of ribs are formed on at least one of a front surface and a rear surface of the shelf main body, and a shape of a concave portion formed by the rib is a polygon ( Square or rectangle), circular or oval. By adopting such a configuration, the same effects as those of the invention described in claim 3 can be obtained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A ceramic firing shelf according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows spacers 2, 2, and
FIG. 2 is a perspective view showing a state in which Nos. 2 and 2 are attached, and FIG. 2 is a cross-sectional view taken along line AA of FIG. In the figure, shelf board body 1
Is formed in a rectangular shape by a refractory material such as silicon carbide, and a rib 4 is formed on the entire periphery thereof. The width of the rib 4 is a length accommodated in the opening 14 of the spacer 2 and protrudes by about 2 mm from the surface of the shelf body 1.

The spacer 2 is made of a refractory material and is a block having a substantially U-shaped cross section which fits so as to sandwich the peripheral portion of the main body 1 from above and below. The corners of the spacer 2 are chamfered so that damage to the corners is prevented. The spacer 2 is fixed by a heat-resistant adhesive 3 such as silicon carbide mortar, for example, in a state of being fitted into the periphery of the shelf main body 1 from the outside.

According to the ceramic firing shelf 8 of the first embodiment, the ribs 4 project from the spacers 2 by a simple method of forming the ribs 4 on the entire peripheral portion of the shelf main body 1. Shows a stopping action and increases adhesive strength. Therefore, the installation stability is improved, and there is no possibility of a collapse accident in a kiln or the like, and the reliability is improved.

Next, a ceramic firing shelf according to a second embodiment of the present invention will be described with reference to FIG. 3, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof will be omitted. Only different points will be mainly described. That is, FIG. 3 differs from FIG. 1 and FIG. 2 in that the opening of the spacer 2 has a longitudinal cross-sectional shape that becomes narrower from the back to the tip. That is, the opening of the spacer 2 has a vertical dimension of the opening entrance 42 that is the minimum dimension in which the shelf main body 1 can be inserted. According to the ceramic firing shelf 8 in the second embodiment, in addition to the same effects as in the first embodiment, the inner wall 21 of the opening is provided.
And the shelf main body 1 form a wedge shape, so that the adhesive material 3 of fire-resistant mortar exhibits a wedge action, and the shelf main body 1 is more difficult to come off.

Next, a ceramic firing shelf according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a plan view of a lower left portion of the ceramic firing shelf according to the third embodiment of the present invention.
FIG. 3 is a perspective view in which a part of a shelf main body is cut away. 4 and 5, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof will be omitted. Only different points will be mainly described. That is, FIGS. 4 and 5 differ from FIGS. 1 and 2 in that a plurality of ribs are formed in a vertical and horizontal lattice on the surface of the shelf body 1. That is, the shelf main body 1 has the vertical ribs 4 a at the peripheral portion from the left edge and the second vertical ribs 4.
b, the following 4c, 4d,... are formed, the lateral rib 4A at the peripheral portion from the lower edge, the second lateral rib 4B, the following 4C, 4D
・ ・ Is formed. For this reason, the shelf main body portion fitted into the opening of the spacer 2 has a portion where a projection is formed in a vertical cross section, that is, the vertical rib 4a and the concave portions 5a, 5b, 5
The rib portion formed by c and 5d exerts a retaining function.

According to the ceramic sintering shelf 8 of the third embodiment, the same effects as those of the first embodiment can be obtained, and the strength of the shelf main body 1 can be increased. Also, by forming a plurality of ribs in a lattice shape, 5a, 5b, 5
c and the like and ribs 4a, 4b, 4c,.
The uneven pattern formed by the convex portions such as B, 4C, etc. emerges, and is excellent in design, soothing the worker's feelings.

Next, a ceramic firing shelf according to a fourth embodiment of the present invention will be described with reference to FIGS. 6 to 8 are plan views of a ceramic firing shelf according to a fourth embodiment of the present invention. 6 to 8
In FIG. 4, the same components as those of FIG. 4 are denoted by the same reference numerals, and the description thereof will be omitted.
That is, in FIGS. 6 to 8, the main difference from FIG. 4 is that a plurality of ribs are obliquely inclined on the surface of the shelf main body 1, and one of the recesses formed by the plurality of ribs has a rhombic shape. (FIG. 6), a plurality of ribs are provided obliquely and vertically, and one of the recesses formed by the plurality of ribs is made triangular (FIG. 7), and a plurality of ribs are formed vertically and horizontally. A point that one of the recesses formed by the plurality of ribs is circular (FIG. 8).
It is.

In the present invention, the rib formed on the peripheral portion is not limited to the front surface of the shelf board body, and may be the back surface or both surfaces. Further, the installation position of the spacer fitted to the shelf main body is not particularly limited, and one end is fitted to two corners, and the other end is fixed by three spacers fitted to the center of one side. It may be a method. The method of forming the ribs on the peripheral edge of the shelf main body is not particularly limited, and even if a method of bonding a preformed rib to the peripheral edge of the shelf main body with a heat-resistant adhesive is used, Although a method of forming the rib portion integrally with the main body may be used, a method of forming the rib portion integrally with the shelf main body is preferable in that the rib portion can be formed easily and firmly. In the shelf main body, the shape of the recess formed by the plurality of ribs may be elliptical.

[0019]

According to the ceramic firing shelf of the present invention, since the rib provided on the shelf main body and the peripheral portion acts to prevent the spacer from coming off, the adhesive strength between the shelf main body and the spacer is improved. I do. Further, according to the ceramic firing shelf plate of the present invention, since the inner wall of the opening of the spacer and the shelf plate body form a wedge shape, the adhesive material of the fire-resistant mortar exhibits a wedge action, and the shelf plate body is It becomes harder to come off. Further, according to the ceramic firing shelf of the third and fourth aspects, the strength of the shelf main body is increased. In addition, by forming a plurality of ribs in a lattice shape, vertically and horizontally or diagonally, various single shapes such as a triangle, a rhombus, a circle, and an ellipse appear in a continuous uneven pattern, and the design is excellent. Relieve your feelings.

[Brief description of the drawings]

FIG. 1 is a perspective view of a ceramic firing shelf according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of a part of a spacer portion of a ceramic firing shelf according to a second embodiment of the present invention.

FIG. 4 is a plan view of a part of a ceramic firing shelf according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a part of the shelf main body of FIG. 4;

FIG. 6 is a plan view of a ceramic firing shelf according to a fourth embodiment of the present invention.

FIG. 7 is a plan view of another ceramic firing shelf according to the fourth embodiment of the present invention.

FIG. 8 shows a plan view of another ceramic firing shelf according to the fourth embodiment of the present invention.

FIG. 9 is a perspective view of a conventional ceramic firing shelf.

FIG. 10 is a sectional view taken along the line BB of FIG. 6;

FIG. 11 is a front view schematically showing a state in which shelves are stacked on a trolley.

[Explanation of symbols]

 1, 10 shelf board body 2, 20 spacer 3, 30 heat-resistant adhesive 4 rib 4a, 4b, 4c, 4d vertical rib 4A, 4B, 4C, 4D horizontal rib 5 concave part 6 convex part (rib part) 8 ceramic firing Shelf board

Claims (4)

[Claims] 1. A ceramic firing shelf in which a substantially U-shaped spacer fitted to a peripheral portion of the shelf main body so as to sandwich the shelf main body therebetween is fixed by a heat-resistant adhesive. A shelf for firing ceramics, characterized in that ribs are formed on the periphery of the main body. 2. The ceramic firing shelf according to claim 1, wherein the opening of the spacer has a longitudinal cross-sectional shape that becomes narrower from the back to the tip. 3. The ceramic firing plate according to claim 1, wherein a plurality of ribs are formed in a vertical and horizontal lattice on at least one of a front surface and a back surface of the main plate. 4. A plurality of ribs are formed on at least one of a front surface and a rear surface of the shelf main body, and a shape of a concave portion formed by the ribs is polygonal (excluding a square or a rectangle);
3. The ceramic firing shelf according to claim 1, which is circular or oval.