JP3574604B2 - Vacuum lamination method and apparatus therefor - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a vacuum laminating apparatus for laminating and forming two or more kinds of laminated materials by heating and pressing in a vacuum atmosphere.
[0002]
[Prior art]
Techniques for forming a laminated material by applying pressure by a film body in a vacuum chamber heated at a predetermined temperature are disclosed in JP-A-11-235754 and JP-A-11-320682. Under such molding conditions at a temperature and a pressure in the conventional method, a situation in which the transport film is in close contact with the surface plate and the laminated material cannot be transported did not occur.
[0003]
[Problems to be solved by the invention]
However, for example, in the case of a build-up substrate, the surface smoothness is required to be high, and the flowability of the resin applied to the laminated material must be good. Therefore, the vacuum laminating apparatus is required to have molding conditions of a temperature of 100 ° C. or more and a pressing time of 60 seconds or more. Under such molding conditions, the transport film easily adheres to the surface plate. If the transport film adheres to the platen, the transport film cannot be pulled to the transport outlet side and transported, and the molding cycle is interrupted.
[0004]
[Means for Solving the Problems]
Therefore, in the present invention, one of the disk bodies provided with a heating device and a surface plate, and a frame, a film body, the other disk body provided with a surface plate and a heating device is pressed to form a vacuum chamber, and together with the transport film, In a vacuum laminating method of a vacuum laminating apparatus in which a laminated material is pressure-formed by a film body under a vacuum at a predetermined temperature, when a transfer film in close contact with a surface plate is separated from both plate bodies after completion of molding, the release device is extended. It was peeled off by the operation.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view schematically showing a vacuum laminating apparatus embodying the present invention.
[0006]
Reference numeral 1 denotes an upper plate, which is a substantially rectangular flat plate having a concave portion. An upper heat insulating plate 5, a heater 7, and an upper surface plate 10 are sequentially stacked and arranged in a concave portion of the upper plate 1 to form a panel body 20. An upper hole 3 is formed substantially at the center of the upper plate 1, and the upper hole 3 communicates with a groove provided in a lattice shape on the bottom surface of the concave portion of the upper plate 1, and is formed in the concave portion by a vacuum pump (not shown) connected to the upper hole 3. And the vacuum chamber 19 is degassed in the whole area. Reference numeral 2 denotes a lower plate, which is a rectangular flat plate having the same dimensions as the upper plate 1. A frame 13 having a frame shape is hermetically fixed to the outer periphery of the lower plate 2, and an O-ring 14 for hermetically sealing the vacuum chamber 19 is fitted into a surface of the frame 13 facing the upper plate 1. A lower heat insulating plate 6, a heater 8, an intermediate member 9, and a film body 12 are sequentially stacked and arranged in a recess formed by the lower plate 2 and the frame 13, and a lower surface plate 11 is placed on the film body 12. To form a board 21. A lower hole 4 is formed substantially at the center of the lower plate 2, and the lower heat insulating plate 6 and the heater 8 are also formed at the same position as the lower hole 4. A lattice-shaped groove communicating with the lower hole 4 is provided on the bottom surface of the concave portion of the lower plate 2. The inside of the lower hole 2 covered with the membrane 12 is evacuated by a vacuum pump (not shown), and a passage is selected and added. Connect to compressed air. In addition, the intermediate member 9 has a porous ventilation structure communicating with the lower pores 4 and the lattice-shaped grooves so that the vacuum suction from the lower pores 4 and the action of the pressurized air uniformly spread over the entire area of the membrane 12.
[0007]
The upper and lower heat insulating plates 5 and 6 are made of a reinforcing material such as glass fiber or aramid fiber and an inorganic composite material such as cement or calcium silicate. Specifically, Vesthermo F of Nikko Kasei Co., Ltd. is suitably used. . The heaters 7 and 8 as heating devices are thin plate flat electric resistance heaters, and a rubber material is suitably used as an insulator. The film body 12 is required to be made of a material having excellent heat resistance, elasticity, flexibility, and elasticity, and silicon rubber, special plastic, or the like is suitably used. The film body 12 is bonded or welded to the frame 13 in an airtight manner. The upper stool 10 is made of stainless steel or the like having a thickness of about 1 mm, and has substantially the same dimensions as the heater 7. The lower surface plate 11 is made of stainless steel or the like having a thickness of about 1 mm, and has substantially the same dimensions as the laminated material 18. The upper and lower platens 10 and 11 are used to finish the surface of the laminated material 18 smoothly.
[0008]
As shown in an example in FIG. 2, the release device 24 includes a driving unit 23 and a pressing member 22. The driving units 23 attached to both ends of the pressing member 22 are provided on the side of the transport outlet of the upper plate 1, and a heat insulating material (not shown). Is fixed through. The air cylinder 25 of the drive unit 23 has a joint 29 fixed to the rod so as to be adjustable in length, and moves the pressing member 22 loosely inserted into the joint 29 via the O-rings 30. Each air cylinder 25 has a flow control valve 26 as a speed regulator for controlling the flow rate of air flowing into the air cylinder 25 to adjust the extension speed of the air cylinder 25, and is supplied from an air pipe 27. The flow rate of air to be supplied is arbitrarily set by the adjustment knob 28. Two or more drive units 23 may be provided depending on the width of the transport film in the transport direction. The pressing member 22 is a round bar or the like having substantially the same width as the width of the conveying film in the conveying direction, and may be of any material as long as the pressing member 22 does not damage the conveying member when pressed against the conveying film. When the release device is operated while transporting the transport film, the pressing member 22 is configured to rotate like a roller. O-rings 31 are arranged on the pressing member 22 at predetermined intervals. The O-ring 31 pushes the pressing member 22 when the lower plate 2 is not sufficiently separated from the upper plate 1 to prevent the pressing member 22 from colliding with the projecting portion of the lower plate 2 and being damaged. belongs to.
[0009]
Next, the operation will be described. First, the lower plate 2 is lowered by a mold clamping device (not shown), and the vacuum chamber 19 is opened. In FIG. 1, a lower transport film 17 and a laminated material 18 placed on the lower transport film 17 are supplied from the right side, and an upper transport film 16 is supplied into the vacuum chamber 19 from above the right via a roller 15. The transfer is performed by nipping the ends of the upper and lower transfer films, which are obtained by laminating the laminated material 18 on the left side in FIG. When the laminated material 18 reaches and positions at a position overlapping the entire surface of the lower platen 11, the conveyance is stopped. Then, the lower plate 2 is lifted, and the lower plate 2 and the upper plate 1 are clamped by a mold clamping device (not shown) via the frame 13 to form a vacuum chamber 19.
[0010]
Before and after the lower plate 2 is raised, the film body 12 is brought into close contact with the intermediate member 9 by vacuum suction through the lower holes 4. When the lower plate 2 and the upper plate 1 are pressed and the vacuum chamber 19 is formed, vacuum suction is performed also from the upper pores 3. Thereafter, the lower pores 4 are switched from a vacuum source to the atmosphere or to a pressurized air source as needed to expand the film body 12 and press the lower platen 11 against the lower transport film 17 to heat and heat the laminated material 18. Press. At this time, the upper transfer film 16 is also pressed by the upper platen 10 and both surfaces are smooth, so that the upper transfer film 16 is in close contact with the upper platen 10. After the forming of the laminated material 18 is completed, the lower plate 2 is lowered again to open the vacuum chamber 19, and the upper and lower transport films are transported together with the laminated material 18. And a strong resistance is generated in the transport direction. Therefore, the release device 24 is operated to push down the upper and lower transport films by the pressing member 22 to release the close contact with the upper surface plate 10.
[0011]
In this embodiment, the air cylinder 25 of the drive unit 23 is provided with the flow control valve 26, and the extension speed of each air cylinder 25 can be set freely. For example, when a portion that is difficult to release is in one of the transport directions of the upper and lower transport films, the pressing member 22 is moved toward the transport film by extending the air cylinder 25 near the portion faster than the other air cylinder 25. By inclining, the releasing effect can be further improved. The air cylinder 25 has a built-in spring acting on the anti-extension side, and automatically expands and contracts when air supply is cut off. When the air cylinder 25 expands and contracts, the flow control valve 26 does not operate, so that all the air cylinders 25 expand and contract at the same high speed. By repeating the above expansion and contraction by the timer and the counter, the releasing action can be further improved.
[0012]
As described above, the representative embodiment of the present invention has been illustrated and described in detail. However, this is merely an example, and the present invention is not construed as being limited to such an embodiment.
[0013]
For example, although the film body 12 is provided on the lower board, it may be provided on the upper board. In addition, the release device 24 may be attached to the lower panel body and the pressing member 22 may be operated so as to be pushed up. Further, the release device 24 can be attached to both upper and lower panels.
[0014]
【The invention's effect】
Since the present invention is configured as described above, it is possible to prevent the transfer film from being in close contact with the surface plate and being unable to be transferred, thereby preventing the forming operation from being hindered, and greatly contributing to an improvement in work efficiency.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view schematically showing a vacuum laminating apparatus for carrying out the present invention.
FIG. 2 is a side view showing the configuration of the release device of the present invention.
[Explanation of symbols]
1 Upper plate 2 Lower plate 3 Upper hole 4 Lower hole 5 Upper heat insulating plate 6 Lower heat insulating plate 7, 8 Heater 9 Middle Member 10 Upper platen 11 Lower platen 12 Film body 13 Frames 14, 30, 31 O-ring 15 Roller 16 Upper transfer film 17 Lower transfer film 18 Lamination Material 19 Vacuum chambers 20 and 21 Board 22 Pressing member 23 Driving unit 24 Release device 25 Air cylinder 26 Flow control valve 27 Air piping 28 Adjustment knob 29 …… Joint

Claims (3)

One of the panels having a heating device and a platen and the other panel having a frame, a film body, a platen and a heating device are pressed to form a vacuum chamber. In a vacuum laminating method of a vacuum laminating apparatus for press-molding a film under a vacuum,
A vacuum laminating method characterized in that a transport film adhered to a surface plate is peeled off by extension operation of a release device after completion of molding. One of the panels having a heating device and a platen and the other panel having a frame, a film body, a platen and a heating device are pressed to form a vacuum chamber. In a vacuum laminating apparatus for press-molding a film under a vacuum,
A vacuum laminating apparatus characterized in that a release device for peeling off a transfer film in close contact with a surface plate after completion of molding is provided on a transfer film outlet side of a plate body. 3. The vacuum laminating apparatus according to claim 2, wherein the release device is provided with driving units at both ends of the pressing member, and each of the driving units has a speed adjuster.

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