JPS644842Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The invention relates to a heating plate in a heat treatment equipment.
In particular, the present invention relates to a heating plate that prevents sliding movement of a workpiece.

(Prior Art) Heat treatment has conventionally been performed as a post-treatment such as etching, and in such heat treatment apparatuses, the workpiece is usually heated by bringing the workpiece into contact with a heating plate. In this case, the surface of the heating plate in contact with the workpiece is a smooth surface to facilitate heat transfer to the workpiece.

(The problem that the invention aims to solve) However, if the surface of the workpiece is also smooth, when the workpiece is placed on the heating plate, a thin air layer will be formed between the heating plate and the workpiece, making it easy for the workpiece to slip. ,
It may come off from the predetermined position on the heated plate.

This situation is particularly serious in continuous heat treatment equipment that uses an automatic transport mechanism, and if the workpiece shifts position during repeated transport, stopping, and heat treatment,
Non-uniformity of processing temperature occurred, which caused trouble.

Therefore, in order to prevent these deviations, a conventional structure has been considered in which pins or blocks are attached to the heating plate so that they protrude during heating and are retracted during transportation, but the structure is complicated and the workpiece In order to make contact with the material, it is necessary to have a material that is not only heat resistant but also has the property of not reacting with the high-temperature workpiece or contaminating the workpiece due to thermal diffusion, which has the disadvantage of being too expensive.

In view of this, the present invention was devised for the purpose of providing a heating plate that can solve the various drawbacks of the conventional heating plate at once by providing air relief grooves on the upper surface of the heating plate that comes into contact with the workpiece. .

[Configuration of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a heat treatment apparatus that heats a workpiece to be heated by placing it on the surface of a heating plate, in which a plurality of air strips are provided on the surface in contact with the workpiece. It is characterized by providing relief grooves to allow air to freely circulate between the surface of the heating plate and the workpiece.

(Function) Even if workpieces are placed one on top of the other on the surface of the heating plate, and air is interposed between the heating plate and the workpieces when the workpieces are heated, this air will flow through the plurality of stripes formed on the surface of the heating plate. The air is discharged from the side of the heating plate through the air relief groove, which prevents the workpiece from floating.

(Embodiments) The present invention will be described below with reference to embodiments shown in FIGS. 1 to 3.

Figure 1 shows a heating plate 1 with many mountain-shaped grooves 3 arranged in the same direction on the surface 2.
When the workpiece and the heating plate 1 are superimposed on each other, air between the workpiece and the heating plate 1 is configured to escape from the mountain-shaped groove 3 in the direction of the arrow.

In FIG. 2, a plurality of parallel grooves 5 each having a semicircular cross section are formed on the surface of the heating plate 1, and a vertical hole 6 and a horizontal hole 7 perpendicular thereto are formed in the groove 5. Side 8
In this case, when the workpieces are stacked on top of each other, the structure is such that air escapes in the three directions indicated by the arrows.

Figure 3 shows a heating plate 1 with a plurality of grooves 9 having semicircular cross sections arranged vertically and horizontally on the surface 2 of the heating plate 1. In this case, when the workpieces are piled up, air can escape in the four directions indicated by the arrows. It is becoming.

Note that the cross-sectional shape of the groove is not limited to the above embodiment, and may be a rectangular groove or the like.

Therefore, in any of the embodiments, even if the workpieces are placed one on top of the other on the surface 2 of the heating plate 1 and air is interposed between the surface 2 of the heating plate 1 and the workpieces, this heated air is removed from the side of the heating plate 1 to the outside through the air relief grooves 3, 5, and 9 on the surface of the heating plate 1, thereby preventing the workpiece from floating.

[Effect of idea]

Since the present invention is constructed as described above, even if the workpieces are stacked on the heating plate and the air between them is heated, it can escape to the outside through the air relief groove provided on the surface of the heating plate. The existence of a heated air layer is eliminated, so the workpiece does not shift during the work, and the work can be done efficiently.

In addition, it does not have the disadvantages of having a complicated structure or being too expensive in order to prevent problems, and the effects obtained even though it is a simple structure that can be processed into a conventional heating plate. It is extremely large.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment in which a heating plate is provided with chevron-shaped grooves, Fig. 2 is a perspective view of an embodiment in which holes are provided in vertical and horizontal directions in grooves with semicircular cross sections in the heating plate, and Fig. 3 The figure is a perspective view of an embodiment in which grooves each having a semicircular cross section are provided vertically and horizontally in a heating plate. 1... Heating plate, 3... Serrated air relief groove, 5
...Semicircular air relief groove, 6...Vertical hole, 7...Horizontal hole, 9...Semicircular air relief groove.

Claims (1)

[Scope of utility model registration request] In a heat treatment device that heats a workpiece by placing it on the surface of a heating plate, multiple air relief grooves are provided on the surface in contact with the workpiece to allow air to freely flow between the surface of the heating plate and the workpiece. A heating plate in a heat treatment apparatus characterized by: