JPS6223802Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Field of Application" This invention relates to a separation support structure for supporting a large number of heat-treated parts and the like in a state where they are separated from each other.

"Prior Art" When heat treating perforated parts such as gears, it is necessary to prevent effective parts from coming into contact with each other to ensure uniform heat treatment. As a technique for preventing the effective parts from coming into contact with each other, the applicant has already proposed a device described in Japanese Utility Model Publication No. 16338/1983. This device supports the perforated parts through point contact by inserting perforated parts into different loop gaps of a coil-shaped separation member and inserting a support rod into the holes of the perforated parts. be. In this way, supporting the perforated part by point contact is advantageous in that unevenness in heat treatment of the perforated part can be eliminated and a homogeneous product can be obtained. Furthermore, the above-mentioned device has the advantage that it is easy to attach and detach the perforated parts.

``Problems to be solved by the invention'' However, since the above-mentioned apparatus has a structure in which the support rod is inserted into the hole of the perforated component, the device to be heat treated is There was a problem that it could not be applied. In addition, if a thin support rod that can be inserted into the hole depending on the size of the hole is used, it will not have sufficient rigidity and will bend or bend. There was a problem. In other words, if the support rod is bent or bent, the spiral structure member into which it is inserted will also sag, causing the mutual spacing between the heat-treated parts to narrow and come into contact with each other, resulting in uniform heat treatment. There was a problem that I could not do it. Further, since such a separate support structure has a large occupied volume, only a certain limited number can be accommodated in the furnace during heat treatment, and there is also a problem in that productivity is low.

``Means for solving the problem'' The separated support structure for heat-treated parts, etc. of this invention is
A helical structural member in which a loop is spirally wound, a support rod that is inserted in the loop of this helical structural member in the direction of its center axis, a wire rod having a smaller cross-sectional area than this support rod, and a support rod. It consists of parts to be heat treated, etc., which have small holes large enough to allow wires to pass through, but not through which wires can be inserted. The helical structural member is prevented from bending by a support rod and is supported in a horizontal state, and the heat-treated parts etc. are inserted into different loop gaps of the helical structural member so as to intersect with the support rod and are separated from each other, The wire rod is inserted into the small hole and suspended.

``Example'' Figures 1 and 2 show an example of this invention, in which reference numeral 1 is a spiral structural member, and reference numeral 2 is a helical structural member.
is a support rod, and numeral 3 is a component to be heat treated.

The spiral structure member 1 is formed by spirally winding a metal loop 1a. Further, the support rod 2 is a round bar-shaped member made of metal, has sufficient rigidity, and is set to be slightly longer than the spiral structure member 1. The support rod 2 is inserted into the loop 1a of the helical structural member 1 in the direction of its central axis. Also, similar to support rod 2,
A wire rod 4 having a smaller cross-sectional area than the support rod 2 is inserted into the spiral structure member 1 . Further, the heat-treated component 3 is a thin metal plate, and has a small hole 3a having a size through which the support rod 2 cannot be inserted but the wire rod 4 can be inserted.
It is a shape that has .

The helical structure member 1 is supported in a horizontal state by the inserted support rod 2 so as to be prevented from bending. The heat treatment target part 3 is also supported in a horizontal state so as to intersect with the support rod 2 at different loop gaps G of the helical structure member.
The small holes 3 are inserted into the holes 3 and spaced apart from each other.
A wire 4 is inserted through a and suspended by point contact.
Even if the wire 4 has low rigidity, the wire 4 is attached to the inner peripheral edge _1a of the loop.
is supported at its lower end.

In the isolated structure configured as above,
Even if the heat-treated component 3 has only a small hole 3a through which the support rod 2 cannot be inserted, the wire 4 is inserted into the small hole 3.
By inserting it through a, the parts 3 to be heat treated are supported in a stable separated state because they are suspended with point contact. If the heat-treated component 3 has a protrusion on the side surface, instead of inserting the protrusion in each loop gap G of the spiral structure member 1, the protrusion may be inserted at intervals as necessary to increase the separation distance. A spiral structure member 1 with a large gap G may be used. In this way, adjacent heat-treated parts 3 do not come into contact with each other, and the contact between the heat-treated parts 3 and the helical structure material 1 or the wire rod 4 is a point contact, so that uneven treatment can be avoided during heat treatment. Heat treatment can be performed homogeneously without any formation of heat. Note that the heat-treated component 3 can be easily attached and detached as in the conventional case.

In the above-described embodiments, the shape of the heat-treated component is an elongated thin plate, but if it has a small hole through which a wire can be inserted,
It may also have a shape as shown in the dashed line in the figure. Even in this case, since the parts to be heat treated and the support rods and loops are in point contact, no unevenness occurs in the heat treatment. As for the number of support rods, a plurality of support rods may be used as necessary depending on the relationship with the parts to be heat treated.

"Effects of the invention" This invention's isolated support structure for heat-treated parts, etc.
The spiral structure member is supported in a horizontal state by a support rod, and the parts to be heat-treated are placed in a spaced-apart manner, and a wire rod is inserted through the small hole and suspended. Therefore, homogeneous heat treatment can be performed in a stable separated state, resulting in stable product quality and good yield.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the separation support structure, and FIG. 2 is a sectional view taken along the line - in FIG. 1. 1... Spiral structure member, 1a... Loop, 2...
Support rod, 3... Part to be heat treated, 3a... Small hole, 4
...Wire rod, G...Loop gap.

Claims (1)

[Scope of utility model registration request] A helical structural member in which a loop is spirally wound, a support rod that is inserted in the loop of this helical structural member in the direction of its central axis, a wire rod having a smaller cross-sectional area than this support rod, and a support rod. The helical structure member is prevented from bending by a support rod and is supported in a horizontal state, and the heat-treated part has a small hole large enough to allow the wire to pass through. etc. are inserted into different loop gaps of a helical structure member so as to intersect with a support rod and are separated from each other, and the wire rods are inserted into small holes and suspended. Distant support structure.