JP2000325773A - Chamber for heating press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamber for a heating press which can excellently cope with the height change of a composite material article. SOLUTION: In a chamber for a heating press, upper and lower metal flanges 6, 7 are provided between upper and lower press heating plates 1, 2 and an intrusion part 11 is further formed in the lower metal flange. This intrusion part 11 is intruded into the upper metal flange 6 and the gap between the intrusion part 11 and the upper metal flange 6 is sealed by a packing 22 having a lip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating press chamber.

[0002]

2. Description of the Related Art Heat presses have been widely used for pressing and molding plates, powders, fibers, foils, and the like of organic substances, inorganic substances, metals, and the like, or composite materials thereof at high temperatures. And when the working temperature is higher than the temperature at which the processed composite material is oxidized by oxygen in the atmosphere,
In this heating press, a composite material to be processed is charged into an upper and lower press heating plate and a sealed space provided therebetween, and the inside is evacuated to be pressed vertically. The heating press chamber is for forming this closed space, and in the conventional one, one cylindrical body is provided between upper and lower press heating plates to form a closed space. Then, a synthetic rubber packing is interposed between the upper and lower press heating plates and the upper and lower ends of the cylindrical body, so as to follow vertical movement by the press and a change in the height of the composite material to be processed. .

[0003]

However, such a conventional device can only follow the elasticity of synthetic rubber within the range of elasticity. However, there is a problem that a special cylindrical body must be manufactured. Furthermore, since the cylindrical body receives the compression load of the press directly, there is a problem that the cylindrical body is easily deformed or damaged. The present invention aims to remedy the disadvantages of the prior art.

[0004]

In order to achieve the above object, a heating press chamber of the present invention is provided between press heating plates provided above and below, and a packing is provided between each of the upper and lower heating plates via a packing. A flange surrounding the predetermined space provided, a penetrating portion provided on the one flange and penetrating into the other flange so as to be movable in the vertical direction, and sliding between the penetrating portion and the other flange. A sealing device for sealing as much as possible, and a suction device for creating a negative pressure in the space surrounded by the penetration portion and the other flange, wherein the sealing device compensates for distortion of the penetration portion due to the negative pressure in the space. And sealing. It is preferable that the sealing device is a packing mounted on the other flange and slidingly contacting the outer periphery of the penetration portion, and has a lip having a size corresponding to the distortion of the penetration portion. Further, a packing mounted on the penetrating portion side and in sliding contact with the inner periphery of the other flange may be used. In the above configuration, the space formed by the flange can expand and contract in the vertical direction, so that it has good followability to the height of the workpiece. Therefore, there is no need to prepare a flange for each height of the workpiece. Also, since the pressing load is not directly received, deformation and breakage can be prevented. Further, it is possible to effectively cope with distortion due to the negative pressure of the penetrating portion, and to maintain the sealing property.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention.
The shape of the chamber X of the present invention is quadrangular in accordance with the shape of the composite material product W, thereby improving space efficiency. In this embodiment, an upper metal flange 6 and a lower metal flange 7 are provided between an upper press heating plate 1 and a lower press heating plate 2.
Are provided, and the composite material product W is charged therein. The upper metal flange 6 and the lower metal flange 7 have a square shape, the space between the upper metal flange 6 and the upper press heating plate 1 is sealed by an O-ring 20, and the space between the lower metal flange 7 and the lower press heating plate 2 Are similarly sealed by an O-ring 21.

At the upper end of the lower metal flange 7, a penetrating portion 11 having a small outer diameter is integrally formed and extends upward, and this penetrating portion 11 penetrates into the inside of the upper metal flange 6. It is configured to be. The outer periphery of the penetrating portion 11 is directly opposed to the inner peripheral surface of the upper metal flange 6, and a ring-shaped packing 22 is mounted therebetween to seal between the penetrating portion 11 and the upper metal flange 6. In addition, 9 is a spring for pressing the upper metal flange 6 against the upper press heating plate 1, and 10 is its spring pin.

As described above, the chamber X is evacuated, but at this time, the penetrating portion 11 may be sucked inward, causing distortion. In particular, when the chamber X is quadrangular, the distortion becomes large near the center of the straight side. Due to the distortion of the penetrating portion 11, a gap between the penetrating portion 11 and the upper metal flange 6 is opened, and there is a risk that the sealing may be defective. Therefore, in the present invention, the packing 22 is provided with a function of compensating for this distortion.

That is, the ring-shaped packing 22 comprises a ring-shaped main body 23 and a ring-shaped lip 24 as shown in FIG. 3, and the main body 23 is fitted in a groove 60 formed in the upper metal flange 6. A lip 24 protrudes from the main body 23 in the direction of the penetrating portion 11 and comes into contact with and seals the penetrating portion 11. In addition, the packing 22 may be mounted on the penetrating portion 11 side, and the lip 24 may be brought into contact with the inner peripheral side of the upper metal flange 6 to seal.

The lip 24 is made of a flexible material, and has a length sufficient to contact and seal the penetration portion 11 even when the gap G between the upper metal flange 6 and the penetration portion 11 is opened. ing. Further, as shown in FIG. 3, it is inclined downward, and in addition to its flexibility, is pressed against the penetrating portion 11 by pressure from the atmosphere side to obtain a high sealing property. The dotted line in the figure indicates the position of the lip 24 in the natural state, and the lip 24 bends by contact with the penetrating portion 11, closely contacts the penetrating portion 11, and is simultaneously pressed against the penetrating portion 11 by atmospheric pressure.

The ring-shaped short lip 25 is provided to prevent the main body 23 from entering the groove 60 and coming out of contact with the penetrating portion 11. A ring-shaped cavity 26 is formed in the vicinity of the center of the packing 22 so that deformation can be followed in response to a pressure load. Further, the main body 23 is formed in a square shape so that the lip 24 is not twisted even when subjected to pressure or friction.

In the above-described structure of the packing 22, even if the inside of the chamber X is evacuated and the penetrating portion 11 is distorted and the gap G becomes large, the lip 24 does not break the contact with the penetrating portion 11, Maintains a good seal.

The lower metal flange 7 is provided with a hole 8 so that the inside is evacuated. It is also possible to provide a nozzle for temperature and pressure measurement, and as shown in FIG. 2, it is configured such that an N2 gas introduction hole (not shown), an N2 gas discharge hole 51, a thermocouple 52 and the like are connected. ing. The O-rings 20, 21
It is also possible to use other packing instead.

In the above construction, the upper metal flange 6,
Since the lower metal flange 7 is made of metal and can move up and down, it can follow a change in height of the composite material product W. This movable range can be set to an arbitrary size by changing the height of the penetrating portion 11 or the height of the upper metal flange 6, and if the movable range corresponding to the required change in height is expected in advance. Thus, there is an effect that it is possible to cope with a change in the height of the composite material product W without replacing the upper metal flange 6 and the lower metal flange 7. Further, the upper heat-resistant gasket 4 and the lower heat-resistant gasket 5 are compressed by the pressing force of the spring 9, so that the space between the upper press heating plate 1 and the lower press heating plate 2 can be sealed well, and good sealing performance is maintained. Furthermore, even if the inside of the chamber X becomes vacuum and the penetrating portion 11 is distorted, the lip 24 of the packing 22 appropriately follows this and maintains the seal with the upper metal flange 6, so that good sealing performance is maintained. be able to.

[0015]

As described above, according to the heating press chamber of the present invention, it is possible to follow the change in the height of the workpiece, and it is not necessary to provide flanges for different heights as in the prior art. Further, the flange and the spring are not deformed or damaged by the compressive load. Furthermore, the sealing performance is improved,
This has the effect of preventing the occurrence of oxidation failure and the like that have conventionally occurred.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view illustrating an embodiment of the present invention.

FIG. 2 is an external plan view of an embodiment of the present invention.

FIG. 3 is an enlarged side view of a packing 22 according to the embodiment of the present invention.

[Explanation of symbols]

1: upper press heating plate, 2: lower press heating plate, 6: upper metal flange, 7: lower metal flange, 8: hole, 9: spring, 1
0: spring pin, 11: penetration, 20: O-ring,
21: packing, 22: packing, 23: body, 24:
Lip, 25: short lip, 26: cavity, 60: groove,
G: Gap.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takero Seki 3-14-15 Yaguchi, Ota-ku, Tokyo Inside Tanken Seal Sekou Co., Ltd. (72) Inventor Nobutaka Hatori 3 Yaguchi, Ota-ku, Tokyo No. 14-15, F-term in tanken seal storage (reference) 3J006 AE15 AE41 4E090 AA01 AB01 DA02 DB01 DB06 HA06 HA07

Claims (3)

[Claims] 1. A flange provided between press heating plates provided above and below, surrounding a predetermined space provided through packing in each of the upper and lower heating plates, and a flange provided on one of the flanges and the other A penetrating portion capable of vertically movably penetrating into the flange, a sealing device for slidably sealing between the penetrating portion and the other flange, and a space surrounded by the penetrating portion and the other flange. A suction device for creating a negative pressure, wherein the sealing device compensates for distortion of the penetrating portion due to the negative pressure in the space and seals the space. 2. The seal device is a packing mounted on the other flange and slidingly contacting an outer periphery of the penetrating portion, the seal device having a lip having a size corresponding to the distortion of the penetrating portion. Item 2. A heating press chamber according to Item 1. 3. The seal device is a packing mounted on the penetrating portion and slidably in contact with an inner periphery of the other flange, having a lip having a size corresponding to the distortion of the penetrating portion. The heating press chamber according to claim 1.