JPH01230704A - Vessel for powder metallurgy - Google Patents

Abstract

PURPOSE:To easily and uniformly charge a work without laying the work on upper wall of prism at the time of changing the work of sintered body, etc., by arranging the prism so as not to parallel between side walls of a vessel body and side walls of the prism. CONSTITUTION:The prism 16 is arranged so as to position with suitable angle between the side walls 12 having plural through holes 14 in the vessel body 11 having bottom part and square cylinder shape and the side walls 18 in the prism 16 having bottom part and square cylinder shape and arranged as facing the opening part to lower side at the bottom wall 13 of the above body 11. Further, the upper wall 17 of the prism 16 is desirable to form to pyramid shape. By such constitution, at the time of changing the work by slanting the vessel, the work does not remained on the side wall 18 of the prism 16 positioning at upper part and bridge is difficult to form. Further, at the time of inserting the work into the vessel, the work does not lay on the upper wall 17 and also by charging the work near the top point of the upper wall 17, it can be easily and uniformly charged.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a container used for tempering or transporting a workpiece in powder metallurgy.

"Prior Art" Conventionally, such containers have been used in Figures 9 to 1! The one shown in the figure was known.

In FIGS. 9 to 11, the symbol ■ indicates a container body in the shape of a rectangular cylinder with a bottom. This container itself! As shown in FIG. 9, a large number of through holes 4 and
... is formed. At the upper end of the side wall 2..., a first
As shown in FIG. 1, a collar 5 having an angular cross-section is fixed in an annular shape. 6 is a square prism shaped like a square cylinder with a bottom. As shown in FIGS. 10 and 11, this square prism 6 has its opening facing downward, and its side wall 7 is connected to the side wall 2 of the container body l.
It is fixed to the center of the bottom wall 3 of the container body 1 so as to be parallel to the bottom wall 3 of the container body 1. The container body facing the opening of the square pillar 6! A portion of the bottom wall 3 of is perforated to form a through hole 8. As shown in FIG. 9, there are many through holes in the side wall 7 and top wall 9 of the square pillar 6! 0... is formed.

A space surrounded by the side walls 2 of the container body l, the bottom wall 3, and the side walls 7 of the rectangular pillar 6 serves as a storage section A for storing sintered bodies and the like.

[Problems to be Solved by the Invention] In a container configured as described above, a large number of sintered bodies are housed in the housing part, and after being tempered in a tempering furnace, these sintered bodies are transferred to a shot peening machine. To transfer the body, as shown in FIG. 12, the container is tilted and the sintered body W is dropped.

However, in the above container, the side wall 7 of the square column 6...
・Each is the container itself! Since the sintered body W is parallel to the side wall 2 of the sintered body W, there is a problem that a part of the sintered body W on the upper side wall 7 does not fall down and remains as shown in FIG.

In addition, a bridge (a state in which the sintered body W is stretched across like a bridge) is formed between the side wall 2 of the container body 1 and the side wall 7 of the square column 6, and it remains without falling. There was a problem.

Also, when putting the sintered body into the container, the upper wall 9 of the square column 6
Since the square pillar 6 is flat, there is a problem in that the sintered body rests on the upper wall 9 of the square pillar 6. Furthermore, during tempering treatment,
In order to uniformly heat each of the sintered bodies, it is necessary to place the sintered bodies as evenly as possible in the storage section A. However, in the above container, as shown in FIG. It took a lot of effort because the amount between each block had to be approximately the same.

This invention was made in view of the above circumstances, and its purpose is to be able to transfer all workpieces such as sintered bodies without leaving any residue, and to prevent the work from getting on the upper wall of the square column when being inserted. To provide a container for powder metallurgy that can easily and uniformly contain workpieces without causing problems.

"Means for Solving the Problems" In order to achieve the above object, the container of the present invention is characterized in that a prismatic column is provided so that the side wall of the container body and the side wall of the prismatic column are not parallel. .

Furthermore, it is a pyramid-shaped structure made from a prismatic clay wall.

"Example" Hereinafter, an example of the container of the present invention will be described based on FIGS. 1 to 4.

In FIGS. 1 to 3, reference numeral 11 denotes a container body in the shape of a rectangular cylinder with a bottom. The side wall 12 of this container body 11...
As shown in FIG. 1, a large number of through holes 14 are formed in the bottom wall I3. As shown in FIG. 3, a collar 15 having an angular cross section is fixed to the upper end of the side wall 12 in an annular shape. 16 is a rectangular prism with a bottomed rectangular cylinder shape (
It is a square column). The upper wall 17 of this square column 16 is formed into a square pyramid shape, as shown in FIG. As shown in FIGS. 2 and 3, the square pillar 16 is arranged in a container such that its opening faces downward and the side wall 18 is positioned at an angle of 45° with respect to the side wall 12 of the container body 11. Main body 11
It is fixed to the center of the bottom wall 13 of. A portion of the bottom wall 13 of the container body 11 facing the opening of the square pillar 16 is bored to form a through hole 19. As shown in FIG.
A large number of through holes 20... are formed. A flat plate-shaped rib 21 is fixed to the lower side of the brim 15.

Also, the inner side part of the container body 11 (joint part of 6 walls)
As shown in FIGS. 1 to 3, a flat plate 22...
・is fixed with its flat part facing the side. In addition, as shown in Figure 4, the four corners of the bottom are marked with
A triangular flat plate 23 is fixed. Further, as shown in FIGS. 2 and 3, a flat plate 24 is provided at the lower part of the inner surface of the side wall 12 at a location facing the joint (side) of the side wall I8 of the square column 16. The flat parts are firmly attached. Each of the above components is made of stainless steel. The container body! The side wall of l! 2..., the bottom wall 13 and the side wall of the square pillar 16! The space surrounded by 8 serves as a storage section B that stores the sintered body and the like.

In such a container, when a large number of sintered bodies (workpieces) are stored in the storage part B and tempered in the sintering furnace, and then transferred to the shot peening machine, four Square pillar ■6th side wall! 8... each have an angle of 45° with respect to the side wall 12... of the container body 11,
Since it is located diagonally, no sintered body remains on the side wall 18 located on the upper side. Also, the side wall of the container body II!
2 and the side wall 18 of the quadrangular prism is not continuously the same but changes, making it difficult to form a bridge.

Also, when putting the sintered body into a container, use a square prism! 6'Niya 1
Since the sintered body 7 is formed into a square pyramid shape, the sintered body placed on the upper wall 17 falls into the storage part B, so that the sintered body does not get on the upper wall 17. Furthermore, if the sintered body is placed near the apex of the square pyramid-shaped upper wall I7 of the square column 16, the sintered body will fall almost uniformly into each of the four blocks of the storage section B in FIG. can be placed evenly.

Also, there are 2 ribs on the underside of the brim 15! Since this is provided, when a plurality of containers are conveyed by a conveyor, it is possible to prevent the flanges 5 of the containers from overlapping each other as in the conventional case (see FIG. 5).

In addition, since the flat plate 22 is provided on the inner side of the container body 11, when the sintered body W is transferred, the sintered body W is not caught in the through hole 4 as in the conventional case (see Fig. 6). This can prevent it from being stored away and remaining. Furthermore, since the flat plates 23 are provided at the four corners of the bottom, as shown in FIG.
It is possible to prevent the sintered body W from getting caught and remaining on the sintered body 4. Also, the side wall! Since the flat plate 24 was provided at the lower part of the inner surface of the square pillar I6 at a location facing the sides of the side walls I8... of the square pillar I6, as shown in FIG. It is possible to prevent the sintered bodies W from forming bridges and remaining the sintered bodies W.

Further, since each component is made of stainless steel, sufficient heat resistance is ensured even if the temperature of the tempering furnace is raised to, for example, 550°C.

Further, a large number of through holes 14 are formed in the container body 11, and a large number of through holes 20 are formed in the square column 16.
・Since this is formed, it is possible to maintain ventilation to uniformize the temperature inside the furnace by convection stirring the hot air inside the tempering furnace with a fan. Furthermore, since the square pillar 16 is fixed to the center of the bottom wall 13 of the container body 11 and the sintered body is accommodated in the storage part B, hot air is also introduced into the square pillar 16, thereby causing sintering. The solid body can be heated uniformly.

Note that this container can also be used when sintering a green compact in a sintering furnace.

"Effects of the Invention" As explained above, in the container of the present invention, when the container is tilted and a work such as a sintered body is transferred, the side wall of the prism and the side wall of the container body are not parallel. Since the side wall of the prismatic column is located diagonally with respect to the side wall of the container body, no workpiece remains on the side wall of the prismatic column located above. Furthermore, since the distance between the side wall of the container body and the side wall of the prismatic column is not continuously the same but changes, it is difficult to form a bridge.

Furthermore, when placing workpieces into the container, since the upper wall of the prismatic column is formed into a pyramidal shape, the workpieces placed on top of the earthen wall will fall, so the workpieces will not be placed on the upper wall. Furthermore, if the workpiece is placed near the apex of the pyramid-shaped upper wall of the prismatic column, the workpiece will fall almost uniformly into each block of the storage section between the side wall of the container body and the side wall of the prismatic column, making it easy to place the workpiece evenly. be able to.

[Brief explanation of the drawing]

1 to 4 are views showing one embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is a second embodiment of the present invention.
FIG. 4 is a perspective view of the bottom corner of the container body. FIG. 5 is a plan view of a conventional container showing a state in which the container tops overlap each other. FIG. 6 is a longitudinal sectional view of the main parts of a conventional container. FIG. 7 is a longitudinal cross-sectional view of the main part of the container according to the present invention in which only the flat plate 22 is provided at the bottom corner of the container. FIG. 8 is a cross-sectional view of the main part of the container according to the present invention when the flat plate 24 is not provided. 9 to 11 are diagrams showing conventional containers,
Figure 9 is a perspective view, Figure 1O is a plan view, Figure 11 is a 10th
It is a sectional view taken along the line xt-xi in the figure. FIG. 12 is a perspective view showing a conventional container tilted. 11... Container body, 12... Side wall, 1
3...Bottom wall, ■4...Through hole, I6.
...Square prism (prismatic pillar), 17 ...Top wall, 1
8...Side wall, 20...Through hole 1, W.
...Sintered compact work).

Claims (2)

[Claims] (1) A container used for tempering or transporting workpieces in powder metallurgy, which has a rectangular cylindrical shape with a bottom and a container body with many through holes in each wall; and a prismatic column having a large number of through holes in each wall and provided on the bottom wall of the container body with the opening facing downward, wherein the side wall of the container body and the side wall of the prismatic column are parallel to each other. A container for powder metallurgy, characterized in that the above-mentioned prismatic column is provided to prevent the above-mentioned. (2) The container for powder metallurgy according to claim (1), wherein the upper wall of the prismatic column is pyramid-shaped.