JPH05329355A - Gas circulating device of autoclave - Google Patents

Abstract

PURPOSE:To obtain a product of high quality by eliminating the non-uniformity of adhesiveness and curing properties, strain or the like due to the temp. difference between a large number of plate-shape molding materials by distributing gas by a grid plate to allow the same to flow upwardly and passing the gas through the gaps between the plate-shape molding materials to circulate the same. CONSTITUTION:A large number of plate-shape molding materials 1 are longitudinally arranged in an autoclave provided so as to be capable of performing pressing, heating and cooling at an appropriate interval to be hermetically closed. An outer gas passage 25 and a wind tunnel 26 permitting gas to circulate by a fan 13 are formed between the inner wall 2b and a wind tunnel wall 24 so as to be mutually cut off when a door 2a is closed. A gas passing grid plate 30 is provided to the lower part of the wind tunnel 26 and the gas is passed through the outer gas passage 25 by the fan to be gathered to the lower part of the wind tunnel and distributed by the grid plate 30 to flow upwardly through the gaps between a large number of plate-shape molding materials 1 and passed through a perforated plate 29 from the wind tunnel 26 to flow through the upper part of a partition plate 28 and heated or cooled by a heating and cooling means D to be circulated to the outer gas passage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for circulating a gas in an autoclave for adhering or adhering and curing a plate-shaped molding material such as a laminated glass or a plate-shaped composite material.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 2-14730 is known as a technique for circulating a gas in an autoclave.

As shown in FIG. 5, this technique uses a molding material 1
In an autoclave in which a molding material 1 is housed under pressure and heated in a pressure container A having a wind tunnel 26a in which a gas is circulated by a blower fan 13 and which can be hermetically sealed by a door 2a, a container inner wall 2b and a wind tunnel are formed. The gas flow flowing out of the outer ventilation passage 25a formed between the wall 24a and the guide vane 31 is turned into a swirling flow, which is then reversed by the inner wall 2c of the door facing the swirling flow, and the reverse flow swirls in the wind tunnel 26a. It is configured so as to flow in one direction.

[0004]

However, in this technique, since the gas flows so as to wrap the entire molding material 1a in the wind tunnel 26a, the wind tunnel 2a starts from the end portion of the outer ventilation passage 25a.
The cavity generated in 6a is extremely small, and the wind velocity distribution in each part in the wind tunnel 26a can be made uniform. Moreover, the swirling flow allows the wind to pass to some extent by the swirling flow. While it has the advantage that it can be heated more uniformly than the entire surface, a large number of plate-shaped molding materials 1 such as laminated glass and plate-shaped composite materials are provided with a gap as shown in FIG. When arranged, the heating gas does not reach the inside when the gap is narrow, that is, a shadow portion is formed. Also,
In the case of curved glass such as the windshield of a car,
Even in the plate shape, if the arrangement (arrangement) of the molding materials faces the gas flow even a little, the heating gas is shielded, and almost no gas flows in the gap portion, and a shadow portion is formed. As a result, a temperature difference occurs between the shadowed portion (the portion where the gas does not flow) and the portion where the gas flows, which adversely affects the adhesiveness, the curability, the distortion, and the like, and a solution to it is desired.

The present invention was developed for the purpose of solving the above-mentioned problems.

[0006]

The present invention, as shown in FIGS. 1 to 3, includes a main body container 2 for accommodating a molding material 1 therein.
And a pressure vessel A provided with a door 2a for sealing the main body vessel
A pressurizing means B for supplying high-pressure gas into the pressure vessel A to pressurize the molding material 1, a fan driving means C for blowing the gas supplied into the pressure vessel A, and the inside of the pressure vessel A In an autoclave equipped with heating / cooling means D for heating / cooling the high-pressure gas supplied to the container, an inner wall 2b of the container and a wind tunnel wall 2 from the inlet of the main body container A to the heating / cooling means D.
The outer ventilation passage 25 and the wind tunnel 26 are formed by 4 and the shielding plate 27 is fixed to the door inner wall 2c side so as to shield the outer ventilation passage 25 and the wind tunnel 26 when the door is closed. At the front position, a partition plate 28 is provided at an appropriate interval so that the upper part can be ventilated, and a porous plate 29 is closely adhered to the upper part of the partition plate 28 and the inner side of the wind tunnel wall 24 to partition it. Lattice plate 3 through which gas flows
0 is laid and the gas is circulated. Then, the gas is blown by the fan 13 of the fan driving means C, passes through the outer ventilation passage 25, and is gathered in the lower part of the wind tunnel 26.
The gas circulates from the inside of the wind tunnel 26 through the perforated plate 29, the upper part of the partition plate 28 and the lower part of the partition plate 28 to the outside ventilation passage 25 through the heating and cooling means D.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, an example of an autoclave molding apparatus for carrying out the present invention will be described. Autoclave molding equipment
As shown in FIGS. 1 and 2, a pressure container A having a main body container 2 for accommodating the molding material 1 therein and a door 2a for sealing the main body container, and a high pressure gas are supplied into the pressure container A. Pressurizing means B for pressurizing the molding material 1 by means of the above, fan driving means C for blowing the gas supplied into the pressure vessel A, and heating / cooling means for heating and cooling the high pressure gas supplied into the pressure vessel A. In the autoclave equipped with D, the heater 18 and the cooler 19 of the heating / cooling means D from the inlet of the main body container 2
The outer air passage 25 and the wind tunnel 26 are formed by the container inner wall 2b and the wind tunnel wall 24, and the shielding plate 27 is fixed to the door inner wall 2c side, and when the door is closed, the outer air passage 25 and the wind tunnel 26.
Is provided so as to shield the upper part of the partition plate 28 and the inside of the wind tunnel wall 24 by providing a partition plate 28 in front of the heater 18 and the cooler 19 with an appropriate interval so that the upper part can be ventilated. Partition the plate 29 in close contact,
The lower part of the wind tunnel 26 is composed of a gas circulating means E provided with a grid plate 30 through which gas flows, and a depressurizing means F for depressurizing the inside of the vacuum bag 35 for sealing the molding material 1 to a high vacuum.

Next, the details of each means will be described. The pressure vessel A is, as shown in FIGS.
A door 2a for sealing is provided in the main body container 2, and a rail 4 for guiding the carriage 3 is laid inside the main body container 2. Also, trolley 3
As shown in FIG. 3, a jig 5 for supporting and arranging the plate-shaped molding materials 1 in a column is provided on the top. The carriage 3 and the jig 5 are shaped so that a gas flow can easily pass between the plate-shaped forming materials arranged in a row on the jig 5 with appropriate gaps.

As shown in FIG. 1, the pressurizing means B can supply a gas such as high pressure nitrogen gas, high pressure carbon dioxide gas, high pressure air, etc. from the high pressure gas supply source 7 into the pressure vessel A through the automatic valve 8. As provided, the gas is heated or cooled via the heater 18 and the cooler 19. Then, it is exhausted through the automatic valve 9.

The fan driving means C, as shown in FIG.
At the rear of the pressure vessel A, a small vessel (small pressure vessel) 12 incorporating a motor 11 is provided in a sealable manner, and the pressure vessel A is also provided.
The fan 13 fitted and fixed to the motor shaft 11a protruding inside the rear part, and the cooling pipe 1 in the small container 12
7 and a temperature detector 14, which detects the temperature of the gas in the small container, transmits the detection signal to the automatic valve 15, and cools and controls the motor 11 in the small container 12 to a temperature below the allowable temperature. It is composed of the cooling means 16. As another embodiment of the fan driving means C, as shown in FIG. 5, the motor 11 is installed at a rear external position of the pressure vessel A, and the shaft portion of the motor 11 is mounted on the pressure vessel A via the sealing mechanism 36.
The fan 1 for blowing air is made to project inside and is attached to the tip of the shaft of the motor.
3 may be fitted and fixed, and the motor 11 may be one that can convert speed, such as an inverter, and is not limited to the embodiment of the present invention.

The heating / cooling means D is provided with a second carriage 20 on which a heater 18 and a cooler 19 are mounted on a rail 4 at a rear portion of the pressure vessel A, and a gas body is heated by the heater 18 and the cooler 1.
9 is used for heating or cooling. Then, the pressure vessel A is passed through the automatic valve 21 to communicate with the cooler 19 to supply cooling water, and the lower portion of the pressure vessel A is communicated from below the cooler 19 to the automatic valve 2
It is provided so that the cooled water can be drained through 2. As another example of the heating / cooling means D, a heating medium may be heated and cooled outside the pressure vessel A, and the heating medium may heat and cool the gas body via a heat exchanger. The invention is not limited to the embodiments.

As shown in FIGS. 1 and 2, the gas circulation means E is connected to the heater 1 of the heating / cooling means from the inlet of the main body container A.
8. The outer air passage 25 and the wind tunnel 26 are formed by the container inner wall 2b and the wind tunnel wall 24 over the cooler 19, and the shielding plate 27 is fixed to the door inner wall 2c side to connect the outer air passage 25 and the wind tunnel 26 when the door is closed. The partition plate 28 is provided so as to be shielded so that the upper portion of the partition plate 28 can be ventilated at appropriate positions in front of the heater 18 and the cooler 19 of the heating and cooling means D, and the upper portion of the partition plate 28 and the inside of the wind tunnel wall 24. A perforated plate 29 is closely attached to the partition to partition the grid, and a lattice plate 30 provided with holes through which gas uniformly flows is laid in the lower part of the wind tunnel 26, and the gas is blown by the fan 13 to pass through the external ventilation passage 25 and the wind tunnel 26. The gas is rectified by the lattice plate 30 after being gathered in the lower part, flows upward, and flows into each gap of the large number of plate-shaped forming materials 1, flows upward in the wind tunnel 26, passes through the holes of the perforated plate 30, and passes through the partition plate 28.
The gas is configured to circulate from the upper part to the lower part through the heater 18 and the cooler 19 to the outside ventilation passage 25. Further, when the guide vanes 31 are provided in the outer ventilation passage 25 formed between the container inner wall 2b and the wind tunnel wall 24, the gas gathers in the lower portion of the wind tunnel 26 while swirling in the outer ventilation passage 25 by the guide vanes 31. Then, it is rectified by the lattice plate 30 and flows upward, so that the gas flow becomes smoother. For example, the function of the present invention can be achieved without the guide vanes 31. It is not limited to the example.

The depressurizing means F, as shown in FIGS.
A vacuum pump 32 installed outside the pressure vessel A communicates with the inside of the pressure vessel A via an automatic valve 33, and is connected to the inside of the pressure vessel A. At the tip of the piping, as shown in FIG. The vacuum joint is detachably attached to the vacuum joint 34b joined to the vacuum bag 35. Then, by operating the vacuum pump 32, the molding material 1
The inside of the vacuum bag 35, which is covered and sealed, is decompressed through the automatic valve 33 to a high vacuum.

Next, the operation of the laminated glass will be described as an example. First, in the preparation stage, as shown in FIG. 3, a molding material (laminated glass) 1 is placed on a jig 5 on a carriage 3.
Arrange the columns with appropriate gaps. Then, it is carried into the pressure vessel A, and the door 2a is closed and hermetically closed.

Next, the pressurizing means B shown in FIG. 1 is operated to supply the high pressure gas into the pressure vessel A, and the heating / cooling means D and the fan driving means C are operated to heat the high pressure gas. The gas is blown by the fan 13 to the outside ventilation passage 25. The blown gas is obstructed by the shield plate 27 while swirling in the outer ventilation passage 25 by the guide vanes 31, as shown by the solid arrow in FIG. Is flowed through the holes of the perforated plate 29 through the openings of the partition plate 28. Heater 1 from top to bottom
8, the gas circulates to the outside ventilation passage 25 via the cooler 19. Then, as shown in the molding pattern of FIG. 4, the laminated glass 1 is heated under pressure and the pressure and temperature are maintained for a certain period of time to bond the laminated glass surfaces.

Next, after a lapse of a certain period of time, in the cooling stage, the heater 18 of the heating / cooling means is stopped, the cooler 19 is operated, and the pressure vessel A is depressurized. Then, when the laminated glass 1 reaches an appropriate temperature, for example, a temperature that can be held in the hand, the cooler 19 is stopped and the pressure is returned to atmospheric pressure, the door 2a is opened, and the laminated glass 1 is taken out to complete one step.

In this embodiment, the bonding of the laminated glass has been described. For example, in the case where the plate-shaped composite material is sealed with the vacuum bag 35 shown in FIG. Is possible by using the pressure reducing means F shown in FIG. 1, and is not limited to the embodiment of the present invention.

[0018]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the gas is rectified by the lattice plate and flows upward, and evenly flows through each gap of the plate-shaped forming material and circulates through the perforated plate. Therefore, the temperature difference that has been generated between the part where gas does not flow and the part where gas flows conventionally disappears, and the adverse effects such as adhesiveness, curability, and distortion due to the temperature difference are eliminated, and high quality products can be obtained. can get.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic side view of an autoclave molding apparatus for carrying out the present invention.

FIG. 2 is a schematic front view of the autoclave molding apparatus as viewed in the direction of arrow XX in FIG.

FIG. 3 is a schematic perspective view showing an embodiment in which the plate-shaped molding material used in the present invention is held with an appropriate gap.

FIG. 4 shows an example of a molding pattern of an autoclave for carrying out the present invention.

FIG. 5 is a partially cutaway schematic side view showing an embodiment of a gas circulation technique in a conventional autoclave.

[Explanation of symbols]

 A pressure vessel B pressurizing means C fan driving means D heating / cooling means E gas circulating means F depressurizing means 1 plate-shaped molding material (laminated glass, plate-shaped composite material) 1a molding material 2 main container 2a door 2b container inner wall 2c door inner wall 3 truck 4 rail 5 jig 7 high pressure gas supply source 8 automatic valve 9 automatic valve 11 motor 11a motor shaft 12 small container 13 fan 14 temperature detector 15 automatic valve 16 motor cooling means 17 cooling pipe 18 heater 19 cooler 20 second truck Reference Signs List 21 automatic valve 22 automatic valve 24 wind tunnel wall 24a wind tunnel wall 25 outside ventilation passage 25a outside ventilation passage 26 wind tunnel 26a wind tunnel 27 shield plate 28 partition plate 29 perforated plate 30 lattice plate 31 guide vanes 32 vacuum pump 33 automatic valve 34a vacuum joint 34b vacuum Joint 35 Vacuum bag 36 Sealing mechanism

Claims (1)

[Claims] 1. A pressure vessel A having a main body container 2 for accommodating the molding material 1 therein and a door 2a for sealing the main body container,
Pressurizing means B for supplying a high-pressure gas into the pressure vessel A to pressurize the molding material 1, fan driving means C for blowing the gas supplied into the pressure vessel B, and supplying into the pressure vessel A. In the autoclave provided with the heating / cooling means D for heating / cooling the high-pressure gas, the outer ventilation passage 25 and the wind tunnel 2 are provided from the inlet of the main body container 2 to the heating / cooling means D by the container inner wall 2b and the wind tunnel wall 24.
6 and the shielding plate 27 is fixed to the door inner wall 2c side so as to shield the outside ventilation passage 25 and the wind tunnel 26 when the door is closed, and an appropriate space is provided in front of the heating and cooling means D. A partition plate 28 is provided so that the upper part can be ventilated, and a perforated plate 29 is closely attached to the upper part of the partition plate 28 and the inside of the wind tunnel wall 24 to partition it, and a grid plate 30 through which gas flows is laid on the lower part of the wind tunnel 26. Then, the gas is blown by the fan 13, passes through the outer ventilation passage 25 and gathers in the lower part of the wind tunnel 26, is rectified by the lattice plate 30 and is upwardly moved into a large number of plate-shaped molding materials 1.
Gas circulation of the autoclave configured such that the gas circulates through each gap, through the perforated plate 29 from inside the wind tunnel 26, and from the upper part of the partition plate 28 to the lower part through the heating / cooling means D to the external ventilation passage 25. apparatus.