JPH0438238Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Field of Application) The present invention relates to a shelf board for a kiln, on which a product to be fired is placed.

(Prior Art) FIG. 4 shows an example of a conventional shelf assembly structure. Reference numeral 1 denotes a cart that moves in and out of the kiln, and supports 2 are erected at each of the four corners of the floor, and a shelf board 3 is placed so as to span over each of these supports, thereby creating the first shelf. will be built. Next, a second shelf is constructed by spanning the shelf boards 3 over the respective pillars 2 erected at the four corners of this shelf. Thereafter, similar operations are repeated to construct a shelf assembly with a desired number of stages. Another shelf assembly structure is a shelf board having an H-shaped vertical cross section with integrally protruding legs of equal length to the board width on the upper and lower sides of each of the two opposing sides of the shelf board. There is also a shelf board in which the leg parts of the shelves are stacked one on top of the other.

However, the pillar 2 and shelf board 3 shown in FIG.
In a structure in which shelves are assembled alternately, the assembly work of shelves is extremely inefficient, and automation thereof is considerably difficult. Moreover, since the support columns 2 and the shelf boards 3 easily shift and move, the shelf assembly built on the trolley 1 may wobble and shift during movement, and may even collapse.

On the other hand, a structure using H-shaped shelves allows shelf assembly to be performed extremely efficiently, and it is easy to automate the shelf assembly work. Ceramic materials with good properties, such as cordierite or mullite, must be used. However, since these have poor hot strength, the shelf board 3 will warp and deform relatively quickly, and if the object to be fired is a tile, for example, it will deform along the shelf board, increasing the incidence of defective products. There's a problem.

Therefore, as shown in FIGS. 5 and 6, a material with sufficiently high fire resistance is used for the shelf body 3 in order to ensure hot strength, and the shelf body 3 has support portions 4,
It is also conceivable to try to solve the difficulty of assembling the shelves and the difficulty of molding the high refractory material by fixing and integrating the parts 6 with a fire-resistant adhesive.
In the case shown in FIG. 5, support columns 4 are fixed in advance to each of the upper and lower surfaces of the shelf main body 3 at appropriate locations around the four corners thereof using a fire-resistant adhesive 5. FIG. 6 shows a structure in which a concave groove 7 is provided on the side surface of the support column 6 into which the peripheral edge of the shelf body 3 is inserted, and the support column 6 is fixed to the shelf body 3 in a fitted state.

(Problems to be Solved by the Invention) However, the shelf board with integrated supports shown in FIG. 5 has the following problems. That is, it is difficult to form the shelf body 3 to have a completely uniform thickness, and the thickness gradually decreases (increases) from one side to the other side between two opposing sides in a certain direction. In some cases, When stacking shelves constructed using such unevenly thick shelf bodies 3, the overall shelf assembly structure may tilt or wobble due to the cumulative effect of uneven plate thickness. will occur.

Furthermore, in the case of the shelf board with integrated supports shown in Fig. 6, when a robot is used to automatically stack shelves in multiple stages, when the robot hand grasps both left and right ends of the shelf board, the support part 6 will touch the main body of the shelf board. Since it protrudes from the side end surface of the shelf 3, that part may become a hindrance and make it difficult to hold it stably, or the protruding part may collide with another object while the shelf board is being handled, causing the column 6 to fall off. Sexuality increases.

The present invention was developed in view of the above circumstances, and its purpose is to make it possible to construct shelves efficiently and accurately, and to facilitate shelf assembly by automatic shelf assembly devices such as robots. To provide a highly durable shelf board for a kiln.

[Structure of the invention] (Means for solving the problem) The shelf board for a furnace according to the present invention has a plurality of peripheral parts of the shelf board main body made of non-oxide ceramic such as silicon carbide or silicon nitride. This is characterized in that notches are provided at the locations, and the support columns are fixed to each of the notches using a fire-resistant adhesive in a manner that they do not protrude to the sides of the shelf body.

(Function) According to the above configuration, since the shelf board main body is mainly made of non-oxide ceramic having high hot strength, there is little bending deformation even after repeated use, and the shelf board is excellent in durability. Moreover, since the shelf board body and the support portion can be molded separately, there is no difficulty in molding.
Furthermore, since the shelf board body and the support pillars are integrated with a fire-resistant adhesive, the shelf assembly work is easy and the shelf assembly structure is stable. Furthermore, even if the shelf body has an uneven thickness, this does not affect the height of the support column at all, so the shelf assembly structure will not tilt even when stacked in multiple stages. In addition, since the support pillars do not protrude to the sides of the shelf body, the support pillars do not get in the way during automatic shelf assembly by a robot or the like.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in Figure 1 showing the overall configuration, 11
Reference numeral 12 denotes a shelf main body, and 12 is a support portion, which is fitted at a plurality of locations around the shelf main body 11, in this case at four corners, respectively, by a fitting structure described below. Figures 2 and 3 show this fitting structure.
In the figure, 13 is a notch, and the shelf body 11
It is formed so that one side end portion forming each of the four corners is missing. The length and depth of this notch 13 are set shorter than the length and width of the support 12 in the planar direction, respectively. Numeral 14 is a small groove provided on the upper surface of the shelf main body 11 in parallel with each notch 13, and its length is equal to or less than the above-mentioned length dimension of the support column 12.
The main material of the shelf body 11 is non-oxide ceramic such as silicon carbide or silicon nitride, which has excellent bending strength under high temperatures.

On the other hand, reference numeral 15 denotes a groove provided on the side surface of each support section 12, which is located at an intermediate position in the height direction of the support section 12, and whose inner surface shape corresponds to the uneven shape of the shelf board body 11 in the vicinity of the notch section 13. This allows the groove 15 and the notch 13 to be fitted closely together with their respective inner surfaces. The depth of the notch 13 and the groove 15 is the same as that between the outer side surface 12a of the support column 12 and the shelf body 1 when both are fitted together.
The side end surface 11a of No. 1 is set to be substantially flush with the side end surface 11a of No. 1. As the material for the support column 12, for example, oxide ceramics such as cordierite and mullite can be used when particularly excellent fire resistance is not required. However, non-oxide ceramics may be used if necessary.

Supports 1 are provided at each of the four corners of the shelf body 11.
2, apply a fire-resistant adhesive 16, for example, kiln mortar such as silicon carbide mortar, to the contact surface between each notch 13 and the groove 15 as shown in FIG. 15 to each corresponding notch 13
and heat them to form a fire-resistant adhesive 16.
It is sufficient if it is sintered. With this, the shelf board A for the kiln
is completed as shown in Figure 1.

Next, the operation of the above configuration will be explained. Furnace shelf board A
To build a shelf assembly by stacking them in multiple stages on a trolley, etc.,
First, the first shelf A for the furnace is placed at a predetermined position on the cart. Next, the second stage kiln shelf board A is installed, so that each support 12 of the second stage kiln shelf board A is
Place them on top of each other so that they overlap. Thereafter, by repeating similar operations, a shelf assembly with the desired number of stages can be easily, quickly, and reliably constructed.

Further, even if such shelf assembly work is automated by a robot or the like, since a part of the support 12 does not protrude from the side end surface of the shelf body 11 unlike that shown in FIG. The robot hand can stably hold the oven shelf A from both left and right sides, and the robot operation can also be simplified.

Furthermore, in the structure of the present invention, the concave groove 15 of the support portion 12
Since the shelf board main body 11 is fitted into the fifth
Unlike the structure shown in the figure in which the shelf body 5 is sandwiched between the upper and lower sides by the pair of struts 4, the dimension between the upper and lower ends of the struts 12 is not affected by the thickness of the shelf body 11 at all times. It becomes constant. Therefore, even if variations occur in the thickness dimension due to molding errors of the shelf body 11, it is possible to reliably prevent the errors from accumulating and tilting the multi-tiered shelf assembly structure. This further contributes to the stabilization of the shelf structure.

Moreover, since the shelf body 11 and the support column 12 are fitted together in a mutually engaged state through the notch 13 and the groove 15, there is a particularly high possibility that an impact force will be applied to the support column 12. be able to withstand enough. In addition, especially in this embodiment, since the small grooves 14 are provided in the shelf body 11, the fire-resistant adhesive 16 filled in these grooves has a so-called anchoring effect, thereby more reliably preventing the support columns 12 from falling off. Ru. The shelf board body 11 is mainly made of non-oxide ceramic, which is expensive but has excellent bending strength under high temperatures, so the shelf board and the pillars have a common feature in that they are integrated. Compared to conventional H-shaped shelf boards, it is less likely to bend or deform even after repeated use, and its durability can be significantly improved.

In addition, in the above structure, the notch 13 and the groove 15
The shape, the formation locations, and the number of formation locations are merely a disclosure of one embodiment. Furthermore, the support section 1
The height position of the groove 15 provided in the groove 2 may be selected not only at the center but also at any arbitrary position.

[Effects of the invention] According to the invention, it is possible to provide a shelf board for a kiln furnace that has no difficulty in forming, has excellent durability, and is easy to assemble shelves. It also has many excellent effects, such as preventing the shelf assembly structure from tilting, and furthermore, allowing automatic shelf assembly by a robot or the like to be easily performed.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention. Figure 1 is an overall perspective view, Figure 2 is an enlarged exploded perspective view of the main parts, and Figure 3 is a support section and shelf body. FIG. 3 is a partially enlarged vertical cross-sectional view showing a state in which the two parts are fitted together. and,
Figure 4 is a front view illustrating the conventional shelf assembly structure;
This figure and FIG. 6 are perspective views showing a reference example. In the figure, 11 is a shelf main body, 12 is a support portion, 13 is a notch, 15 is a groove, and 16 is a fire-resistant adhesive.

Claims (1)

[Scope of utility model registration request] It consists of a shelf body and support columns fixed at multiple locations around the shelf body with a fire-resistant adhesive, and the shelf body is made mainly of non-oxide ceramic such as silicon carbide or silicon nitride. What is claimed is: 1. A shelf board for a kiln furnace, wherein the support column is fitted into a notch formed in a peripheral part of the shelf main body and is fixed in a state in which it does not protrude laterally.