JPH0138476Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hot press device for sintering.

(Prior art and its problems) In a conventional sintering hot press device, a press frame equipped with a press cylinder for pressurization was fixed to a furnace body.

Therefore, if the furnace internal parts such as the furnace heater are damaged, in order to replace the furnace internal parts such as the heater,
Maintenance was extremely troublesome, as the furnace body had to be dismantled or the press frame had to be dismantled.

Further, since the press frame has a welded structure, it is not only troublesome to manufacture, but also has various problems such as the accuracy of the press surface being lost due to changes over time.

SUMMARY OF THE INVENTION In view of the problems of the prior art, an object of the present invention is to provide a hot press device for sintering that is inexpensive, easy to maintain, and can maintain the precision of the press surface well.

(Means to Solve the Problems) In order to achieve the above object, the sintering hot press device according to the present invention has a press frame equipped with a press cylinder for pressurization located at the center of the hot press furnace body and at the outside of the furnace body. The press frame can be moved between the press frames and the press frame is made by cutting a single thick steel plate.

(Example) Next, the present invention will be explained with reference to the drawings which are one example.

FIG. 1 is a front view of a sintering hot press apparatus 1 according to the present invention, which roughly shows a hot press furnace body (hereinafter referred to as the furnace body) 8 attached to the upper part of a base 2.
, an elevating frame 10 , and a press frame 14 .

The lower part of the furnace body 8 is open, and
It has a heating device (not shown) inside, and the inside communicates with a vacuum source. Furthermore, a fixed ram 9 protrudes from the upper part of the furnace body 8. Note that the other internal structures are the same as those of the conventional one.

The elevating pedestal 10 is guided by a guide rod 3 erected on the base 2 and can be raised and lowered,
Moreover, it can be raised and lowered by a ball screw 5, which is a raising and lowering means driven by a motor 4 provided on the base 2.

The horizontally protruding holder portion 11 of the elevating frame 10 is provided with a furnace lid 12 for opening and closing the lower opening of the furnace body 8, and a press ram 13 penetrating through the furnace lid 12 and capable of being raised and lowered. be.

The press frame 14 is made by cutting a thick steel plate and has a roughly square shape, and support frames 15 on both sides of the lower part are placed on the rails 6 provided on the base 2 by guide rollers 16. , and can be moved between the center position of the furnace body 8 and the outside of the furnace body 8 by the air cylinder 7. Further, a press cylinder 17 for pressing the press ram 13 is provided at the lower part of the press frame 14.

Next, a method of operating the sintering hot press apparatus 1 having the above configuration will be explained.

First, the press frame 14 is retracted to a position separated from the furnace main body 8 (the solid line position in FIG. 1), and the motor 4 is driven to lower the elevating frame 10.

In this state, a die case (not shown) loaded with the processing material is placed on the press ram 13, the elevating frame 10 is raised, the processing material is pressed against the lower surface of the fixed ram 9, and the furnace main body 8 The lower opening of the furnace lid 12 is closed.

Here, the press frame 14 is moved to the center position of the furnace body 8 by the air cylinder 7, while the inside of the furnace body 8 is evacuated, and the temperature inside the furnace body 8 is raised by the heater.

Then, the press cylinder 17 is raised,
Hot press treatment is performed by compressing the treated material.

When the hot press process is completed in the above manner, the press cylinder 17 is moved back to open the furnace cover 12, the press frame 14 is moved back to its original state, and the elevating frame 10 is lowered. All you have to do is take out the processed material.

In the above embodiment, the furnace body 8 is provided with only a heating chamber, but it may be of a two-chamber type in which a cooling chamber is provided in the lower part of the furnace body 8.

In other words, a processing material loading/extraction door and a cooling fan are provided on the side of the cooling chamber, and an intermediate door is provided between the heating and cooling chambers to open and close both chambers from the side. The material is placed on the press ram through the charging door, the press cylinder is raised, and the material is loaded into the heating chamber. When hot pressing is completed, the press cylinder is lowered to position the material in the cooling chamber, and the material is placed in the cooling chamber. The lower opening of the heating chamber is closed, and the processing material is cooled with a cooling fan.
In this case, the press frame 14 is retracted only during maintenance of the furnace body.

In each of the embodiments described above, the press cylinder 17 is provided only at the bottom of the press frame 14, but it goes without saying that it may be provided at the top, top, or bottom of the press frame 14.

(Effects of the invention) As is clear from the above explanation, in this invention, the press frame is movable relative to the furnace body, so even when replacing the heater, etc., there is no need to disassemble the furnace body etc. , maintenance is easy as it is only necessary to move the press frame.

In addition, the press frame is made by cutting a thick steel plate and does not have a welded structure, so it is easy and inexpensive to manufacture, and the load deflection due to changes over time is greatly reduced (1/5000 or less). However, the press accuracy is improved compared to the conventional method.

[Brief explanation of the drawing]

Fig. 1 is a front view of the sintering hot press device according to the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a side view when the press frame is located at the center of the furnace body. . 1... Hot press device for sintering, 2... Base,
3...Guide rod, 5...Ball screw, 8...Furnace body, 10...Elevating rack, 12...Furnace cover, 13...
Press ram, 14... Press frame, 17...
press cylinder.

Claims (1)

[Scope of utility model registration request] In a hot press device that pressurizes and sinters processing materials, a press frame equipped with a press cylinder for pressurization is movable between the central position of the hot press furnace body and the outside of the furnace body, and the press frame is moved in one direction. A hot press device for sintering, characterized in that the product is cut from thick steel plates.