KR101737604B1 - Press apparatus, vacuum frame, and press-forming method - Google Patents

Abstract

The press apparatus according to the embodiment of the present invention includes an upper diaphragm which is an elastic membrane that divides an upper space and a main chamber into upper and lower portions, a lower diaphragm which is disposed to face the upper diaphragm, and which is an elastic membrane that vertically divides the main chamber and the lower space. An air pressure control device for controlling the air pressure difference in the main chamber, the upper space and the lower space, and a heating device for heating the workpiece placed in the main chamber. The pressurizing control device causes the pressures in the main chamber to be lower than the pressures in the upper space and the lower space and press the heated workpiece between the upper diaphragm and the lower diaphragm, , And a curing process for heating the workpiece in a non-vacuum state is performed.

Description

PRESS APPARATUS, VACUUM FRAME, AND PRESS-FORMING METHOD [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press apparatus, a vacuum frame, and a press forming method used in laminate processing of laminated articles.

A hot press apparatus using a diaphragm (elastic film) (hereinafter referred to as a " laminate apparatus ") is known for carrying out lamination of laminated articles such as solar panels. In the conventional diaphragm type laminating apparatus as disclosed in Patent Document 1, a vacuum chamber is formed between a heat plate and a diaphragm. By vacuum processing the inside of the vacuum chamber, the workpiece placed on the heating plate is pressed between the heating plate and the diaphragm, and lamination is performed.

Japanese Patent Laid-Open Publication No. 2012-196835

Since the conventional laminate apparatus described above presses the workpiece between the flat top surface of the work table and the diaphragm, it is impossible to press the workpiece at an equal pressure unless the surface of the workpiece is at least flat.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a laminating apparatus capable of laminating a workpiece whose both surfaces are uneven.

According to one embodiment of the present invention,

An upper diaphragm that is an elastic membrane that divides the upper space and the main chamber vertically,

A lower diaphragm disposed opposite to the upper diaphragm and being an elastic membrane for vertically partitioning the main chamber and the lower space;

An air pressure control device for controlling the air pressure difference in the main chamber, the upper space and the lower space,

A heating device for heating a workpiece disposed in the main chamber;

And,

Wherein said atmospheric pressure control device comprises:

A pressing process for pressing the workpiece heated between the upper diaphragm and the lower diaphragm by making the air pressure in the main chamber lower than the atmospheric pressure in the upper space and the lower space,

A curing treatment for heating the workpiece under a non-vacuum condition by setting the atmospheric pressure in the main chamber to be higher than the atmospheric pressure in the lower space,

Is performed.

According to one embodiment of the present invention,

The upper diaphragm, which is an elastic membrane, is fitted in an upper chamber with a lower surface closed and a lower chamber with an upper surface closed by an upper diaphragm as an elastic membrane to form an airtight main chamber. An upper end of the lower diaphragm and a lower end of the upper diaphragm,

And a ventilation hole for supplying / discharging air to / from the main chamber,

An annular portion extending in the extending direction of the vacuum frame,

A first portion extending from the annular portion and opening to an outer peripheral surface of the vacuum frame,

A second portion extending from the annular portion and opening to the inner peripheral surface of the vacuum frame,

Is provided.

According to one embodiment of the present invention,

The upper diaphragm and the lower diaphragm, which are a pair of elastic membranes arranged so as to face each other in the upward and downward directions, are arranged in the main chamber partitioned by the upper space and the lower space,

The press processing for pressing the workpiece heated between the upper diaphragm and the lower diaphragm is performed while heating the workpiece so that the atmospheric pressure in the main chamber is lower than the atmospheric pressure in the upper space and the lower space,

There is provided a press molding method for performing a curing treatment for heating the workpiece under a non-vacuum condition by increasing the air pressure in the main chamber to be higher than the air pressure in the lower space.

According to the constitution of one embodiment of the present invention, it is possible to laminate a workpiece whose both surfaces are non-flat surfaces.

1 is a front perspective view of a laminating apparatus according to a first embodiment of the present invention.
Fig. 2 is a view in the direction of the arrow AA in Fig.
3 is a view for explaining the structure of a vacuum frame.
4 is a view for explaining a procedure of a laminating process according to the first embodiment of the present invention.
5 is a front perspective view of a laminate apparatus according to a second embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)

Fig. 1 is a front perspective view of a laminate apparatus 1 according to a first embodiment of the present invention, and Fig. 2 is a view in the direction of an arrow A-A in Fig. The laminate apparatus 1 is provided with a main body 1a, a control section 2, an atmospheric pressure control apparatus 3 and a hydraulic control apparatus 4. [ The main body 1a, the atmospheric pressure control device 3 and the hydraulic pressure control device 4 are connected to the control section 2 and operate under the control of the control section 2, respectively.

The main body 1a has an outer chamber 10 and an upper nirvana 20, a lower nirvana 40 and a hydraulic cylinder 50 which are arranged in the outer chamber 10. The outer chamber 10 is connected to the air pressure control device 3 via the outer chamber air supply duct 3a and the inner pressure of the outer chamber 10 is vacuumed by the air pressure control device 3 0.1 kPa) to atmospheric pressure or higher (for example, water pressure).

The hydraulic cylinder 50 (drive device) is connected to the hydraulic control device 4 and operates in accordance with the supply / discharge of hydraulic oil by the hydraulic control device 4. [ Further, the cylinder tube 51 of the hydraulic cylinder 50 is fixed to the frame of the outer chamber 10.

The upper nirvana 20 is fixed on the frame of the outer chamber 10 with the lower surface being horizontal. Further, the lower thermal plate 40 is arranged so that its upper surface is opposed to the lower surface of the upper thermal plate 20. The lower cylinder 40 is fixed to the ram 52 of the hydraulic cylinder 50 on the lower surface and vertically moves together with the ram 52 as the hydraulic oil is supplied to and discharged from the hydraulic cylinder 50.

A temperature sensor (not shown) and a temperature sensor (not shown) are provided in each of the upper and lower nerves 20 and 40. The temperature of the upper nerves 20 and the lower nerves 40, (2). The thermal energy is used to heat the lower surface of the upper nib 20 and the upper surface of the lower nib 40 such that the resin contained in the work W contains a far infrared ray, (For example, a film or a plate) is provided to efficiently heat the workpiece W. That is, the upper and lower nerves 20 and 40 function as a heating device for heating the work W.

An upper chamber unit 20U is attached to the lower surface of the upper nail table 20. The upper chamber unit 20U includes an upper diaphragm fixing frame 21U, an upper diaphragm 22U, and an upper diaphragm protecting plate 23U.

The upper diaphragm 22U is a highly stretchable sheet material (elastic membrane) formed from an elastomer having entropy elasticity, such as silicone rubber.

The upper diaphragm fixing frame 21U is a substantially cylindrical member whose central axis is disposed in the vertical direction, and the upper end thereof is joined to the lower face of the upper heat spreader 20 in a state of hermetic sealing. For this bonding, various methods such as welding, bonding, pressure bonding through a sealant can be used. The upper diaphragm fixing frame 21U has a tapered surface with an inner peripheral surface of a frustum side surface shape so that the upper diaphragm fixing frame 21U becomes thicker toward the upper thermal bar 20. [ The hollow portion of the upper diaphragm fixing frame 21U is hermetically closed at its lower end by the upper diaphragm 22U. Thereby, the upper chamber 24U surrounded by the upper cylinder 22, the upper diaphragm fixing frame 21U and the upper diaphragm 22U is formed. Since the upper heat bar 20 of the present embodiment is provided with the vent hole 20a connecting the lower surface and the side surface (that is, connecting the upper chamber 24U and the outer chamber 10) The inner pressure of the outer chamber 10 and the inner chamber 24U are substantially the same.

The hollow portion (upper chamber 24U) of the upper diaphragm fixing frame 21U is connected to a flat upper diaphragm protecting plate 23U disposed parallel to the lower surface of the upper diaphragm fixing frame 21U (i.e., the upper diaphragm 22U) . In the upper diaphragm protecting plate 23U, a plate material having air permeability such as a punching plate or a porous plate is used in order to prevent a pressure difference in the spaces on both sides thereof.

A lower chamber unit 40L configured in the same manner as the upper chamber unit 20U is attached to the upper surface of the lower cylinder 40 in a vertically opposite direction to the upper chamber unit 20U. That is, the lower chamber unit 40L includes a lower diaphragm fixing frame 41L whose lower end is hermetically bonded to the upper surface of the lower booster 40 and a lower diaphragm fixing frame 41L which is hermetically sealed to the hollow portion of the lower diaphragm fixing frame 41L A lower diaphragm 42L attached to the upper end of the lower diaphragm fixing frame 41L and a lower diaphragm forming plate 43L attached to the inner peripheral surface of the lower diaphragm fixing frame 41L so as to partition the hollow portion vertically. The lower diaphragm forming plate 43L is a plate material having the same air permeability as the upper diaphragm protecting plate 23U. In the lower chamber unit 40L, a lower chamber 44L surrounded by the lower cylinder 40, the lower diaphragm fixing frame 41L and the lower diaphragm 42L is formed.

Further, a ventilation hole (40a) for connecting the upper surface and the side surface of the lower heat roller (40) is provided. One port of the three-port solenoid valve 47 is connected to one end of the vent hole 40a. The other one port of the three port solenoid valve 47 is connected to the air pressure control device 3 through the lower chamber air supply duct 3c and the remaining one port is opened in the outer chamber 10. [ The three-port solenoid valve 47 is controlled by the control unit 2 to control the state in which the lower chamber 44L and the outer chamber 10 are in an open state and the state in which the lower chamber 44L and the air pressure- (Pressure control state).

On the upper surface of the lower chamber unit 40L, a circular annular vacuum frame 60 having an outer diameter substantially equal to that of the lower diaphragm fixing frame 41L is hermetically attached. The lower nirvana 40 is raised and the upper surface of the vacuum frame 60 is brought into close contact with the lower surface of the upper chamber unit 20U to be hermetically sealed by the upper diaphragm 22U, the lower diaphragm 42L and the vacuum frame 60 An enclosed main chamber 26 (Fig. 4 (b)) is formed. The pressure difference between the inner pressure of the upper chamber 24U and the pressure in the lower chamber 44L and the inner pressure of the main chamber 26 causes the upper diaphragm 22U and the lower diaphragm 42L to have a pressure And expands toward the lower chamber side.

Fig. 3 (a) is a plan view of a part of the vacuum frame 60, and Fig. 3 (b) is a view in the direction of arrow B-B in Fig. 3 (b), when the lower diaphragm 42L and the upper diaphragm 22U are expanded toward the main chamber 26, the inner surface of the vacuum frame 60 A tapered surface (or a curved surface) 60a is formed so as to be bent at a small radius of curvature along the corner so as not to cause deterioration or damage.

The vacuum frame 60 is provided with a ring-shaped upper member 62, a lower member 64 and an O-ring 66, respectively. The upper member 62 and the lower member 64 are vertically stacked, and their joint portions are hermetically sealed by an O-ring 66. [ In the vacuum frame 60, an annular hollow portion 60b (annular portion) extending over the entire circumference in the extending direction is formed. The upper member 62 and the lower member 64 are located close to and opposed to each other on the inner peripheral side of the hollow portion 60b and are provided with a ventilation slit (not shown) between the hollow portion 60b and the main chamber 26 60c are formed. The vent slit 60c is a slit-shaped vent path extending over the entire periphery of the vacuum frame 60 and opening to the inner circumferential surface of the vacuum frame 60.

A ventilation hole 60d for connecting the hollow portion 60b and the outer chamber 10 is formed on the outer peripheral side of the vacuum frame 60. [ The ventilation hole 60d is expanded in diameter at one end side (outer peripheral surface side of the vacuum frame 60) to form a tapered screw 60e. 1) is connected to the taper thread 60e from the air pressure control device 3 and is connected to the main chamber 26 through the vacuum frame 60 by the air pressure control device 3. [ (Air or an inert gas such as dry nitrogen) can be supplied / discharged into the chamber.

The vent slit 60c is formed such that the cross-sectional dimension thereof is constant over the entire circumference so that the pressure loss at the time of supplying / discharging air to the main chamber 26 through the vent slit 60c is substantially uniform over the entire circumference have. The supply / discharge of air into the main chamber 26 is performed through the hollow portion 60b having a large cross-sectional area and a small pressure loss and the aeration slit 60c having a small cross-sectional area and a large pressure loss. Therefore, supply / discharge of air to the main chamber 26 is made substantially uniformly and gently from the entire circumference of the vent slit 60c.

Next, the procedure of laminating the workpiece W with the laminating apparatus 1 according to the first embodiment of the present invention will be described with reference to Fig.

First, as shown in Fig. 4 (a), the hydraulic cylinder 50 (Fig. 1) is driven to lower the lower cylinder 40, and the upper chamber unit 20U and the vacuum frame 60 are separated do. At this time, the solenoid valve 37 (Fig. 1) of the main chamber air supply duct 3b connected to the vent hole 60d (Fig. 3) of the vacuum frame 60 provided in the air pressure control device 3 is closed And the supply and exhaust of the vacuum frame 60 is stopped. Further, the three-port solenoid valve 47 connects the lower chamber 44L to the outer chamber 10 (Fig. 1) (opened state). After the workpiece W is loaded on the lower diaphragm 42L, the outer chamber 10 is vacuum-treated by the air pressure control device 3. At this time, the upper chamber 24U and the lower chamber 44L, which communicate with the outer chamber 10 by the ventilation holes 20a and 40a, respectively, are also vacuum-treated.

Next, as shown in Fig. 4 (b), the lower cylinder 40 is raised by driving the hydraulic cylinder 50 (Fig. 1), the upper chamber unit 20U and the vacuum frame 60 are brought into close contact with each other, Thereby forming a main chamber 26. At this time, the outer chamber 10 (FIG. 1), the upper chamber 24U, the main chamber 26, and the lower chamber 44L are both in vacuum.

Next, air is introduced into the outer chamber 10 by the air pressure control device 3, and the air pressure in the outer chamber 10 is gradually increased to atmospheric pressure (about 100 kPa). At this time, the pressures of the upper chamber 24U and the lower chamber 44L, which are in communication with the outer chamber 10, also rise to atmospheric pressure, but the vacuum is maintained in the closed main chamber 26. The upper diaphragm 22U and the lower diaphragm 42L are expanded toward the main chamber 26 by the difference in air pressure between the upper chamber 24U and the lower chamber 44L and the main chamber 26. [ 4C, the workpiece W is sandwiched between the upper diaphragm 22U and the lower diaphragm 42L, and the upper chamber 24U and the lower chamber 44L and the main chamber 26). When this state is maintained for a predetermined time, the processing temperature (the curing temperature of the resin when the thermosetting resin is used, the temperature of the thermosetting resin when the thermosetting resin is used, (E.g., a temperature not lower than the glass transition point of the resin when used), and the resin (e.g., thermosetting resin such as epoxy resin or thermoplastic resin such as ethylene-vinyl acetate copolymer resin Resin) is softened (in the case of a thermosetting resin, further hardened), the respective members constituting the workpiece W are integrally joined.

In the case where gas is generated from the workpiece W during the press processing, the gas pressure control device 3 controls the pressure of the main chamber 1 through the main chamber air feed duct 3b connected to the vacuum frame 60, (26) may be subjected to a vacuum treatment. This makes it possible to forcibly discharge the gas generated from the workpiece W during the press processing from the main chamber 26 and to prevent defective joining of the workpiece W due to generation of gas and deterioration of the diaphragm .

When the joining of the workpiece W (pressing process) is completed, the curing process is performed next. The curing process stabilizes the workpiece W by keeping the workpiece W after bonding at a curing temperature of the resin (in the case of a thermoplastic resin, a temperature equal to or higher than the glass transition point). In this embodiment, the curing process is performed in a non-vacuum state (i.e., in air or in an inert gas). Here, a pressure of 0.1 atm or more is referred to as a non-vacuum. As shown in Fig. 4 (d), in the curing process of the present embodiment, compressed air having a pressure P1 higher than atmospheric pressure is introduced into the main chamber 26 by the air pressure control device 3 (Fig. 1) . At this time, the three-port solenoid valve 47 is switched to a state (pressure control state) in which the lower chamber 44L and the air pressure control device 3 are connected to each other, and the air pressure control device 3 is connected to the lower chamber 44L. The air having a pressure P2 lower than the pressure P1 is introduced into the main chamber 26. [

Since the difference between the internal pressure of the upper chamber 24U and the internal pressure of the main chamber 26 is large, the upper diaphragm 22U expands greatly toward the upper chamber 24U and is brought into close contact with the upper diaphragm protecting plate 23U to be flat . The upper diaphragm protecting plate 23U prevents the upper diaphragm 22U from being deteriorated or thermally damaged by contacting the upper ledge 20 heated to a high temperature. Since the upper diaphragm protecting plate 23U is disposed in parallel with the lower surface of the upper heating plate 20 so that the upper diaphragm 22U can radiate radiant heat from the upper heating plate 20 when the upper diaphragm protecting plate 23U is in close contact with the upper diaphragm protecting plate 23U To a suitable temperature in a uniform and efficient manner. The upper diaphragm protecting plate 23U may be held in close contact with the upper diaphragm protecting plate 23U before the press forming to preheat the upper diaphragm protecting plate 23U. Further, the lower diaphragm forming plate 43L has the same operational effect as the upper diaphragm protecting plate 23U described above.

On the other hand, the lower diaphragm 42L does not contact the lower diaphragm forming plate 43L because the difference between the inner pressure P2 of the lower chamber 44L and the inner pressure P1 of the main chamber 26 is relatively small, To the lower chamber 44L side. In the present embodiment, the inner pressure difference in which the lower diaphragm 42L curves along the lower surface of the workpiece W is previously calculated or experimentally measured while the workpiece W is placed on the lower diaphragm 42L, The air pressure control device 3 controls the internal pressure P2 of the lower chamber 44L so that the obtained pressure difference difference overlaps the lower diaphragm 42L. As a result, substantially all of the lower surface of the workpiece W is supported by the lower diaphragm 42L expanded at the same curvature at a substantially uniform pressure, so that the deformation applied to the workpiece W is small A curing process is performed. As a result, a product (workpiece W) with low residual stress and high reliability can be obtained.

4 (e), when the workpiece W has a flat bottom surface, the three-port solenoid valve 47 is switched so that the lower chamber 44L is opened to the outer chamber 10 (The open state), the inner pressure difference between the lower chamber 44L and the main chamber 26 is increased. As a result, the lower diaphragm 42L expands greatly toward the lower chamber 44L, and is brought into flat contact with the lower diaphragm forming plate 43L. As a result, since the workpiece W is supported by the flat lower diaphragm 42L at a uniform pressure, the curing process is performed in a state where the deformation is small. As a result, The workpiece W) is obtained.

(Second Embodiment)

Next, a laminating apparatus 100 according to a second embodiment of the present invention will be described. 5 is a front perspective view of the laminate apparatus 100. FIG. In the following description, the same or similar reference numerals are used for the same or similar components to those of the first embodiment, and redundant descriptions will be omitted.

Although the first embodiment described above is an example in which the present invention is applied to one stage of a laminate apparatus, the second embodiment is different from the first embodiment in that a plurality of intermediate stages 130 are provided between an upper stage 120 and a lower stage 140 The present invention is applied to a laminate apparatus. The laminate device 100 according to the present embodiment includes one intermediate barrel 130 but two or more intermediate barbs 130 may be disposed between the upper barrel 120 and the lower barrel 140 It is also possible to adopt a configuration.

A lower chamber unit 130L and an upper chamber unit 130U are attached to the upper surface and the lower surface of the middle row 130, respectively. The upper chamber unit 130U is the same as the upper chamber unit 120U (corresponding to the upper chamber unit 20U in the first embodiment) attached to the lower surface of the upper thermal bar 120, and the lower chamber unit 130L Is equivalent to the lower chamber unit 140L (corresponding to the lower chamber unit 40L in the first embodiment) attached to the upper surface of the lower cylinder 140. [

In the first embodiment described above, the entire main body 1a of the laminate apparatus 1 is accommodated in the outer chamber 10, and each chamber (the upper chamber 24U, the lower chamber 44L, The upper chamber units 120U and 130U and the lower chamber units 130L and 140L are provided without the outer chamber 10 in the second embodiment, Is directly connected to the air pressure control device 103 and the internal pressure of each chamber unit is individually controlled by the air pressure control device 103. [ In this configuration, since it is not necessary to perform the vacuum process for the entire outer chamber 10 having a large volume, the time required for the vacuum process is greatly reduced, and the entire process time can be shortened.

In this embodiment, since the vacuum chambers 60A and 60B are attached to the upper chamber units 20U and 30U, the upper surfaces of the lower chamber units 130L and 140L on which the work W is placed are completely flat , It is possible to easily carry in / out the workpiece W to / from the laminate apparatus 100.

A pair of receiving plates 120b and 130b protruding from left and right sides are attached to the upper and lower heating plates 120 and 130 of the laminate apparatus 100, respectively. In the frame 110 of the laminate apparatus 100, two pairs of column support mechanisms 112 (only one of which is shown on the front side) arranged opposite to the width direction (left and right direction in FIG. 5) have. When the workpiece W before machining is carried into the laminate apparatus 100 or the workpiece (product) W after the machining is taken out from the laminate apparatus 100, Is a mechanism for holding the nirvana just above the workpiece W to be conveyed at a predetermined height so as to be spaced therefrom.

The heat bar supporting mechanism 112 is provided with a movable pin 112a which can reciprocate in the width direction. The heat bar supporting mechanism 112 is connected to the control unit 102, and the driving of the movable pin 112a is controlled by the control unit 102. [ The heat bar supporting mechanism 112 does not interfere with the upward and downward movements of the upper and lower heating plates 120 and 130 in a state in which the movable fin 112a is retracted (moved outward in the width direction of the main body 100a) The receiving plate 120b of the upper nerves 120 or the receiving plate 130b of the middle nerves 130 are brought into contact with each other when the movable pin 112a is projected (moved inward in the width direction of the main body 100a) Respectively.

Next, the operation of the laminating apparatus 100 when the workpiece W is taken out / carried into the laminating apparatus 100 will be described. During the laminating process (press working), the movable pins 112a of the respective nerves supporting mechanisms 112 are retracted, the intermediate nerves 130 are placed on the lower nerves 140, and the upper nerves 130 120 are placed in a mounted state. When the hydraulic cylinder 150 is driven to move the lower cylinder 140 in the vertical direction, the intermediate cylinder 130 and the upper cylinder 120 stacked on the lower cylinder 140 are separated from the lower cylinder 140 It goes up and down together.

The position of the receiving plate 120b of the upper thermal bar 120 is adjusted by the position of the movable pin of each of the thermal bar supporting mechanisms 112 when the work W is carried out between the upper and lower thermal bars 120, The hydraulic cylinder 150 is driven to raise the lower cylinder 140 until it is slightly higher than the lower cylinder 120a. Then, the movable pin 112a of each of the heat bar supporting mechanisms 112 is projected toward the upper heat bar 120 side. The lower surface of the receiving plate 120b of the upper heating plate 120 is engaged with the movable pin 112a of each of the heating plate supporting mechanisms 112 by driving the hydraulic cylinder 150 to lower the lower heating plate 140. [ And the upper nail 120 is placed on the two pairs of movable pins 112a. When the lower nirvana 140 is further lowered, the middle nirvana 130 is lowered together with the lower nirvana 140, but the upper nirvana 120 is supported by the two pairs of the movable pins 112a, Therefore, the middle nervous system 130 deviates from the upper nervous system 120. When the interval between the upper and lower nerves 120 and 130 reaches a size sufficient for carrying out / bringing in the workpiece W, the driving of the hydraulic cylinder 150 is stopped.

Subsequently, when the workpiece W is taken out / carried between the middle nerves 130 and the lower nerves 140, the upper nerves 120 are placed on the middle nerves 130, and the receiving plates 120b The hydraulic cylinders 150 are driven to raise the lower cylinder 140 until they are slightly lifted from the movable pins 112a of the respective cylinder support mechanisms 112. [ Subsequently, after the movable pin 112a of each of the heat bar supporting mechanisms 112 is retracted, the position of the receiving plate 130b of the intermediate heat bar 130 becomes slightly higher than the movable pin 112a of each heat bar supporting mechanism 112 The hydraulic cylinder 150 is driven to raise the lower cylinder 140. When the hydraulic cylinders 150 are driven to lower the lower cylinder 140 after the movable pins 112a of the respective cylinder supporting mechanisms 112 are projected toward the intermediate cylinder 130, The lower surface of the plate 130b comes into contact with the movable pin 112a of each of the column support mechanisms 112 and the intermediate column 130 is placed on the two pairs of the movable pins 112a. The lower nerves 140 are lowered from the middle nerves 130 because the middle nerves 130 are supported by the two pairs of the movable pins 112a and are not further lowered. When the distance between the middle nervous system 130 and the lower nervous system 140 reaches a sufficient size for carrying out / bringing in the workpiece W, the driving of the hydraulic cylinder 150 is stopped. When the workpiece W is carried out, the middle nerves 130 are placed on the lower nerves 140 and the receiving plates 130b of the middle nerves 130 are moved The hydraulic cylinders 150 are driven to raise the lower cylinder 140 until the cylinder 112 is slightly lifted from the pins 112a and then the movable pins 112a of the respective cylinder support mechanisms 112 are retracted.

Although the embodiments of the present invention have been described, the present invention is not limited to the configurations of the above embodiments, and various modifications are possible within the scope of the technical idea.

In each of the above-described embodiments, an electric heater is used for heating the heat bar, but the heating bar may be heated by using another heating device. For example, it is also possible to adopt a configuration in which heat of a nirvane is uniformly heated by flowing a heat such as silicone oil into a flow path provided in the nirvana, as disclosed in International Publication No. 2006/103868.

In the above embodiments, the upper (lower) diaphragm fixed frame and the vacuum frame formed in a cylindrical shape are used. However, the present invention is not limited to this configuration, and the upper (lower) (Lower) diaphragm fixing frame or a vacuum frame may be used.

Further, in each of the above-described embodiments, a flat diaphragm-shaped lower diaphragm forming plate is used, but a lower diaphragm forming plate having the same shape as the lower surface of the work W may be used. In this case, during the curing process, the lower diaphragm can be formed in the same shape as the lower surface of the workpiece W by making the inner pressure of the main chamber sufficiently higher than the inner pressure of the lower chamber and bringing the lower diaphragm into close contact with the lower diaphragm- have. As a result, the workpiece W is supported at a uniform pressure by the lower diaphragm, so that a product having a low residual stress and high reliability (workpiece W) can be obtained.

1, 100 ... Laminate device
2, 102 ... The control unit
3, 103 ... Pressure control device
4, 104 ... Hydraulic control device
20, 120 ... Upper nirvana
30, 130 ... Middle nirvana
40, 140 ... Lower nirvana
50 ... Hydraulic cylinder
W ... The work (laminate)

Claims (35)

An upper diaphragm that is an elastic membrane that divides the upper space and the main chamber vertically,
A lower diaphragm disposed opposite to the upper diaphragm and being an elastic membrane for vertically partitioning the main chamber and the lower space;
An air pressure control device for controlling the air pressure difference in the main chamber, the upper space and the lower space,
A heating device for heating a workpiece disposed in the main chamber;
And,
Wherein said atmospheric pressure control device comprises:
A pressing process for pressing the workpiece heated between the upper diaphragm and the lower diaphragm by making the atmospheric pressure in the main chamber lower than the atmospheric pressure in the upper space and the lower space,
A curing treatment for heating the workpiece under a non-vacuum condition by setting the atmospheric pressure in the main chamber to be higher than the atmospheric pressure in the lower space,
. The method according to claim 1,
Wherein the barometric pressure control device is configured to cause the lower diaphragm to bend along the lower surface of the workpiece to support the workpiece at a uniform pressure in the curing process when the lower surface of the workpiece is a curved convex surface, And to control the air pressure difference between the main chamber and the lower space. The method according to claim 1,
And a diaphragm forming plate having a flat upper surface opposed to the lower diaphragm in the lower space,
In the curing process, when the lower surface of the workpiece is a flat surface, the above-described barometric pressure control device is configured such that the lower diaphragm is brought into close contact with the diaphragm-forming plate and is flatly formed to support the workpiece at a uniform pressure And a pressure difference between the main chamber and the lower space is controlled. 4. The method according to any one of claims 1 to 3,
An upper chamber unit provided on the lower surface of the upper diaphragm and surrounding the upper space with airtightness;
A lower chamber unit provided on the upper surface of the lower diaphragm and hermetically sealing the lower space,
A vacuum chamber disposed between the upper chamber unit and the lower chamber unit and having a hollow portion vertically passing therethrough;
A driving unit for driving at least one of the upper chamber unit and the lower chamber unit up and down;
And,
And the main chamber is formed by sandwiching the vacuum frame between the upper chamber unit and the lower chamber unit by driving the driving device
. 5. The method of claim 4,
Wherein the heating device comprises:
The upper chamber unit being fixed to a lower surface thereof,
An upper boiler heating means for heating the upper boiler,
The lower chamber unit being fixed to the upper surface,
A lower boiler heating means
And,
And a layer of far-infrared radiation material is provided on the lower surface of the upper nib and the upper surface of the lower nib
. 6. The method of claim 5,
And a diaphragm fixing frame having a hollow portion through which the upper chamber unit and the lower chamber unit vertically penetrate,
Wherein each of the diaphragm fixing frames has one end surface thereof fixed in close contact with the lower surface of the upper nib or the upper surface of the lower nib and the opening of the hollow portion formed in the other end surface in the up- Clogged by
. 6. The method of claim 5,
Wherein the upper nib is provided with a first ventilation hole for supplying / discharging air to / from the upper space,
And a second ventilation hole for supplying / discharging air to / from the lower space
. 8. The method of claim 7,
The first vent hole connects the lower surface and the side surface of the upper nib,
And the second ventilation hole connects the upper surface and the side surface of the lower nirvana
. 8. The method of claim 7,
And an outer chamber accommodating the upper nirvana, the upper chamber unit, the vacuum frame, the lower chamber unit, and the lower nirvana, and connected to the atmospheric pressure control device,
Wherein the first ventilation hole and the second ventilation hole are open to the outer chamber,
And controlling the air pressure in the upper space and the lower space by controlling the air pressure in the outer chamber
. 8. The method of claim 7,
An outer chamber connected to the atmospheric pressure control device and adapted to receive the upper nirvana, the upper chamber unit, the vacuum frame, the lower chamber unit and the lower nirvana,
Port switching valve,
The first port of the three-port switching valve is connected to the second vent hole,
Wherein the second port of the three-port selector valve is open to the outer chamber,
The third port of the three-port switching valve is connected to the atmospheric pressure control device,
Wherein when the three-port selector valve is switched so that the first port and the second port are connected, the air pressure in the lower space is controlled by controlling the air pressure in the outer chamber,
When the three-port switching valve is switched so that the first port and the third port are connected, the air pressure in the lower space is directly controlled by the air pressure control device
. 8. The method of claim 7,
Wherein at least one of the first ventilation hole and the second ventilation hole is connected to the atmospheric pressure control device
. 6. The method of claim 5,
Wherein the heating device comprises:
Wherein the upper chamber unit is fixed to a lower surface thereof, the lower chamber unit is fixed to an upper surface thereof, and at least one intermediate radial plate disposed between the upper and lower thermal arms,
And at least one intermediate heating stage heating means for heating the at least one intermediate heating stage,
And a layer of far-infrared radiation material is provided on the upper and lower surfaces of the intermediate heating plate
. 13. The method of claim 12,
In the middle nipple,
A third vent hole for supplying / discharging air to / from the upper chamber,
And a fourth vent hole for supplying / discharging air to / from the lower chamber is formed
. 14. The method of claim 13,
The third ventilation hole connects the lower surface and the side surface of the intermediate heat plate,
And the fourth vent hole connects the upper surface and the side surface of the middle nirvana
. 13. The method of claim 12,
And a diaphragm protection plate disposed between the upper diaphragm and the upper or lower middle row or the middle row to prevent contact between the upper diaphragm and the upper or lower middle row
. 6. The method of claim 5,
Wherein the driving device is a hydraulic cylinder, and the lower cylinder is fixed to the ram of the hydraulic cylinder
. 5. The method of claim 4,
The vacuum frame is provided with a fifth vent hole for supplying / discharging air to / from the main chamber connected to the atmospheric pressure control device
. 18. The method of claim 17,
Wherein the fifth ventilation hole
An annular portion extending in the extending direction of the vacuum frame,
A first portion extending from the annular portion and opening to an outer peripheral surface of the vacuum frame,
A second portion extending from the annular portion and opening to the inner peripheral surface of the vacuum frame,
. 19. The method of claim 18,
And the second portion is formed in a slit shape extending in the extending direction of the vacuum frame
. 19. The method of claim 18,
Wherein a pressure loss when the gas passes through the second portion is larger than a pressure loss when the gas passes through the first portion. The method according to claim 1,
Wherein the atmospheric pressure control device controls the pressure in the main chamber to be a vacuum in the press processing and the atmospheric pressure in the upper space and the lower space to an atmospheric pressure
. 16. The method of claim 15,
The air pressure control device controls the air pressure difference between the upper space and the main chamber so that the upper diaphragm expands and comes into close contact with the diaphragm protective plate before or during the pressing process
. The method of claim 3,
Wherein the diaphragm forming plate is provided with a vent hole. The method according to claim 1,
And the laminate is a laminate, and the laminate is pressed so that the laminate is subjected to heat treatment to laminate the constituent members of the member to be processed integrally
. 16. The method of claim 15,
Wherein a vent hole is formed in the diaphragm protecting plate. The upper diaphragm, which is an elastic membrane, is fitted in the upper chamber with the lower surface closed and the lower chamber with the upper surface closed by the lower diaphragm as the elastic membrane to form an airtight main chamber. An upper end of the lower diaphragm and a lower end of the upper diaphragm,
And a ventilation hole for supplying / discharging air to / from the main chamber,
An annular portion extending in the extending direction of the vacuum frame,
A first portion extending from the annular portion and opening to an outer peripheral surface of the vacuum frame,
A second portion extending from the annular portion and opening to the inner peripheral surface of the vacuum frame,
Lt; / RTI > 27. The method of claim 26,
And the second portion is formed in a slit shape extending in the extending direction of the vacuum frame
And a vacuum frame. 28. The method of claim 26 or 27,
The pressure loss for allowing the gas to pass through the second portion is larger than the pressure loss for allowing the gas to pass through the first portion
And a vacuum frame. The upper diaphragm and the lower diaphragm, which are a pair of elastic membranes arranged so as to face each other in the upward and downward directions, are arranged in the main chamber partitioned by the upper space and the lower space,
The press processing for pressing the workpiece heated between the upper diaphragm and the lower diaphragm is performed while heating the workpiece so that the atmospheric pressure in the main chamber is lower than the atmospheric pressure in the upper space and the lower space,
And a curing treatment for heating the workpiece in a non-vacuum state is performed by increasing the air pressure in the main chamber to be higher than the air pressure in the lower space. 30. The method of claim 29,
In the curing process, when the lower surface of the workpiece is a curved convex surface, the lower diaphragm curves along the lower surface of the workpiece to support the workpiece at a uniform pressure, Controlling the air pressure difference in the lower space
. 31. The method of claim 30,
A diaphragm forming plate having a flat upper surface is disposed in the lower space so as to face the lower diaphragm,
In the curing process, the lower diaphragm is brought into close contact with the upper surface of the diaphragm forming plate and is flatly formed to support the workpiece at a uniform pressure when the lower surface of the workpiece is a flat surface, And controlling the air pressure difference of the lower space
. 32. The method according to any one of claims 29 to 31,
Wherein the upper diaphragm is opposed to the upper diaphragm,
A diaphragm protecting plate for preventing contact between the upper diaphragm and the nirvane is disposed between the upper diaphragm and the nirvana,
The pressure difference between the main chamber and the upper space is controlled so that the upper diaphragm expands toward the upper space side and comes into close contact with the diaphragm protective plate before or during the pressing process
. 32. The method according to any one of claims 29 to 31,
A vacuum frame having a hollow portion vertically passing between the upper diaphragm and the lower diaphragm is disposed,
After the workpiece is loaded on the lower diaphragm, at least one of the upper diaphragm and the lower diaphragm is moved up and down so that the vacuum chamber is hermetically fitted into the upper diaphragm and the lower diaphragm to form the main chamber
. 32. The method according to any one of claims 29 to 31,
In the pressing process, the atmospheric pressure in the main chamber is made to be a vacuum, and the atmospheric pressure in the upper space and the lower space is set at atmospheric pressure
. 32. The method according to any one of claims 29 to 31,
The above-mentioned work is a laminate, and the work is pressed under heating to perform lamination processing for integrally joining the constituent members of the work to be processed
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