JPS62189126A - Multi-stage vacuum pressing device - Google Patents

Abstract

PURPOSE:To obtain a molded product whose quality is favorable and to improve working efficiency, by making the whole of a multi-stage press into a vacuous state by enclosing the same with an enclosure in an airtight state. CONSTITUTION:A lateral circumferential wall 25 and top plate 26 are formed of a face plate like a steel plate respectively on the circumference of a lateral circumference of framework 20 and the upper part of the framework 20 and closed up tightly in a vessel-like state through welding or a seal packing. A space enclosed with this enclosure 2 and a vacuum pump are made to communicate with each other through one or a plurality communication pipes. When a molded matter is put on the topmost shelf plate 9 and put into a multi-stage press 1, along with a matter that a door 16 of a gateway 19 is closed, airtightness is kept on reliably with a seal packing 17 and the same is heated and pressurized, a vacuum is drawn by the vacuum pump, the inside of the enclosure 2 is made into a vacuous state and molded for a fixed period of time under this state. The molded product finished in molding by a multi-stage vacuum pressing device A for hot pressing like this is cold-pressed by a multi- stage pressing device F for the cold pressing and unloaded from the shelf plate 9 of an unloader 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an apparatus for stacking laminated boards such as printed wiring boards in multiple stages vertically and pressing them in a vacuum state.

[Background technology] Generally, when laminating a laminate such as a printed wiring board,
In order to eliminate residual air bubbles, increase flatness accuracy, and reduce variation in dimensional changes, it is preferable to perform molding under vacuum while controlling pressure and temperature. Conventionally, when molding under vacuum using a multi-stage press machine, a frame larger than the product was set for each stage of the multi-stage press, and a vacuum was created by maintaining an airtight seal between each hot platen. However, this conventional method has the disadvantage of requiring a large number of man-hours to set and dismantle the frames for each stage, and also requires a large amount of sealing material for the frames, resulting in high costs. In addition, there was a drawback that the vacuum level varied from stage to stage, resulting in unstable quality.

[Objective of the Invention 1 The present invention has been made in view of the above points, and an object of the present invention is to airtightly surround the entire multi-stage press and create a vacuum state, thereby improving workability and quality. Good molded products can be obtained, and the entire multistage press can be airtightly surrounded with a simple structure.Furthermore, molded products can be easily taken in and out of the multistage press by opening the door and the entrance/exit. To provide a multi-stage vacuum press device that allows easy inspection of multi-stage presses.

[Disclosure of the Invention] The multi-stage vacuum press device of the present invention assembles a three-dimensional lattice-shaped frame 20 of steel material or the like so as to surround the outer periphery of the multi-stage press 1, and attaches a drawing board 21 such as a steel plate to the frame 20. It is characterized by forming an enclosure 2 surrounding the entire outer periphery, communicating a vacuum pump with the space surrounded by this enclosure 2, providing an entrance/exit 19 in the enclosure 2, and opening/closing the entrance/exit 19 with JJl, 6. By configuring as described above, the drawbacks of the conventional example are solved. In other words, by surrounding the entire outer circumference of the multi-stage brake 61 with the enclosure 2 and evacuating the space inside the enclosure 2,
It is not necessary to use a frame for each stage as in the past, and it is now possible to obtain molded products with good workability and high quality.Moreover, the outer periphery of the multi-stage press 1 is surrounded by a three-dimensional lattice-like structure made of steel etc. By assembling the frame 20 and attaching a drawing board 21 such as a steel plate to the frame 20 to form an enclosure 2 that surrounds the entire outer circumference of the multi-stage brace 1, it is possible to easily enclose the entire circumference of the multi-stage brace 1 in an airtight manner. Furthermore, an entrance 19 is provided in the enclosure 2, and the entrance 19 is connected to the door 1.
By making the door 16 freely openable and closable, the enclosure 2 can be opened by opening the door 16.
Moldings can now be easily taken in and out of the multi-stage press 1, and the multi-stage press 1 can also be inspected easily.

The present invention will be explained in detail below with reference to Examples.

The multi-stage brace 1 is formed by arranging a plurality of heating plates 6 between upper and lower mold plates 4 and 5. Template 5 below this multi-stage bracelet
is located near the floor FL, and the lower template 5 can be moved up and down with respect to the base 10 placed on the bit below the floor FL. The multi-stage press 1 for hot pressing is provided with a heat medium header 22, so that the heat plate 6 is heated with the heat medium. This hot-pressed multi-stage press 1 is surrounded by a container-shaped enclosure 2 that surrounds the entire outer periphery.

Assembling enclosure 2 is carried out as follows.

A leg portion 23 is assembled on the outer periphery of the base 10 using a steel material such as H-shaped steel, and a three-dimensional lattice-shaped frame 20 is mounted on the base 10 so as to surround the multi-stage brace 1 using a steel material such as H-shaped steel. Can be assembled. A heat medium header 22 is also placed inside this frame 20. A bottom surface part 24 is formed on the bottom surface of this frame 20 at the level of the floor surface FL, and is sealed around the multi-stage brace 1. A drawing board 2 like a thick steel plate is installed around the four sides of the frame 20.
1 is pasted and made into a box shape by welding or sealing, etc., to form the side peripheral wall 25. A top plate 26 made of a drawing board 21 such as a steel plate is pasted on top of the frame 20 and sealed like a container by welding or using a sealing pad. The space surrounded by the enclosure 2 and the vacuum pump are communicated with each other through one or more communication pipes, and the vacuum pump provides suction to the enclosure 2.
The space inside can be evacuated. A side peripheral wall 25 of the enclosure 2, which is sealed like a container, is provided with an entrance 19 serving as an entrance and an exit opening 19 serving as an exit, and a door 16 is slidably disposed on the outer surface of the enclosure 2.
The door 16 can close the entrance/exit 19. At the periphery of the entrance/exit 19, there is a door 16 when the door 16 is closed.
A seal gasket 17 is provided around the entire circumference to make airtight contact.

A multi-stage vacuum press apparatus A for hot press is formed as described above, and a multi-stage vacuum press apparatus A for hot press is formed.
A multi-stage press device B for cold pressing is arranged on the exit side of the press. Multi-stage press equipment B for this cold press
Most of the structure is the same as the multi-stage vacuum press apparatus A for hot pressing, but there is no enclosure 2 and a lug 27 is provided for the refrigerant instead of the heat medium header 22, and the hot platen 6 is cooled by the lug 27 for the refrigerant. It looks like this. A lobe 8 is disposed on the inlet side of the enclosure 2 of the multistage vacuum press apparatus A for hot press, and an unlobe 15 is disposed on the exit side of the multistage press apparatus B for cold press. The lobe 8 and the unlobe 15 are provided with a plurality of shelf boards 9 in the vertical direction so as to correspond to the heating platen 6, and the plurality of shelf boards 9 can be removed together from above and below. A bushing 1] is placed in front of the lobe 8, and a blur 12 is placed at the tip of the unlobe 15.

Next, the operation of the apparatus configured as described above will be explained. The loader 8 is used to fill the laminates to be formed, and is initially lowered so that the uppermost shelf board 9 comes close to the floor surface FL. Then, the molded product with an appropriate number of laminates set on the carrier board is placed on the uppermost shelf board 9, the shelf board 9 is raised one step, the next molded product is placed on the second tier, and the shelf board 9 is placed in order. Place the molded products one after another while raising the molded products, place the molded products on the shelf boards 9 of each stage, raise the plurality of shelf boards 9 to the top, and press the multistage press 1 of the multistage vacuum press apparatus A for hot press. Make it correspond. In this state, doorway 1 becomes the entrance to enclosure 2.
1J16 of 9 was moved along the rail 13 to press each molded product in the multistage press 1.
Push it to the side and place each molded product between each heating platen 6 of the multistage press 1. The loader 8 has shelf boards 9 on both sides in a direction parallel to the moving direction of the button shear 1, and the button shear 1 can move between the shelf boards 9 on both sides.
Each pressing portion 14 holds each stage of the carrier plate so that each molded product can be sent to the multi-stage pump 1. When the molded product is placed in the multi-stage press 1, it is reliably kept airtight by the inlet packing 17, heated and pressurized by the multi-stage press 1, and evacuated by the vacuum pump to create a vacuum inside the enclosure 2.
It is molded in this state for a certain period of time. At this time, in the loader 8, molded products are placed on each shelf board 9 in the same manner as described above. When the molded product is formed in the multistage press 1, the doors 16 of the entrances and exits 19 on the entrance and exit sides of the enclosure 2 are opened, and the molded product in the loader 8 is pushed by the pusher 1, so that the molded product is ready for hot pressing. It is put into the multi-stage press 1 of the multi-stage vacuum press apparatus A of . As a result, the molded product that has been formed in the multistage vacuum press device A for hot press is sent to the multistage press 1 of the multistage press device B for cold press, and the molded product is cold pressed. In the multi-stage vacuum press apparatus for hot press, the doors 16 of the entrance and exit ports 19 on the entrance and exit sides of the enclosure 2 are closed, and molding is performed in the same manner in the multi-stage press 1.

In the loader 8, molded products are set on each shelf board 9 in the same manner as described above. The molded product cold-pressed by the multi-stage press equipment eB for cold pressing is pulled out to the unloader 15 by the buller 12 by moving the buller 12 along the rail 13.

The unloader 15 has shelf boards 9 on both sides in a direction parallel to the moving direction of the puller 12.
is movable, and each pulling portion 28 of the buller 12 can hold each stage of carrier plates and send each molded product to the unloader 15. Then, in the unloader 15, the molded product is taken out from the lowest shelf board 9 and carried out, and then each shelf board 9 of the unloader 15 is lowered one step, and the molded product is taken out from the second shelf board 9 from the bottom, and one by one, the molded product is taken out from the shelf board 9 at the bottom. The molded product is taken out from each shelf board 9 by lowering the board 9. After the molded products are taken out from each shelf board 9 of the unloader 15, each shelf board 9 of the unloader 15 is moved to the top, and the receiver for the next molded product is prepared for removal. Moldings are sequentially formed by repeating such a cycle.

[Effects of the Invention] As described above, the present invention airtightly encloses the entire outer periphery of the multi-stage press, and connects the vacuum pump to the space surrounded by this enclosure, so that molding can be performed in a vacuum state and quality can be improved. Not only can a good product be obtained, but it can also be formed with good workability without requiring a frame for each stage as in conventional methods.In addition, it is possible to form a three-dimensional lattice-like framework made of steel or other material to surround the outer periphery of the multi-stage press. As it is assembled, a drawing board such as a steel plate is attached to the frame to form an enclosure that surrounds the entire periphery of the multi-stage press, making it easy to enclose the outer periphery of the multi-stage press in an airtight manner, and it is also structurally strong. Moreover, since the enclosure has an entrance and exit, and the entrance can be opened and closed with a door, molded products can be taken in and out by opening the door. It is easy to put in and take out the press, and it also allows people to come in and out through the doorway, making it easy to inspect and maintain the multistage press (replacement of heat medium-related piping, replacement of heating plates, etc.).

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view of an embodiment of the present invention, FIG. 2 is a partially cutaway plan view of the same, and FIG. 3 is a side view of an enclosure, where 1 is a multistage press, 2 is an enclosure, 16 is a door, 19 is an entrance/exit, 2o is a frame, and 21 is a drawing board.

Claims (1)

[Claims] [1] Assemble a three-dimensional lattice-like frame made of steel materials, etc. to surround the outer periphery of the multi-stage press, and attach a drawing board such as a steel plate to the frame to form an enclosure that surrounds the entire outer periphery of the multi-stage press, and the press is surrounded by this enclosure. A multi-stage vacuum press device characterized in that a vacuum pump is communicated with a space, an entrance is provided in an enclosure, and the entrance can be opened and closed with a door.