JPS5933312B2 - press equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a press machine that manufactures a laminate by passing a base material 2 between two continuous metal belts 1 which face each other and move in the same direction and applying heat and pressure through a pressure medium 3. A magnet 5 is installed around the outer periphery of the inner surface of a pressure plate 4 that presses the belt 1 through a pressure medium, and a magnetic fluid 6 is used to seal between the magnet 5 and the continuous metal belt 1, and a portion surrounded by this sealed portion is This relates to a press device characterized by enclosing a pressure medium 3.

Conventionally, when manufacturing a laminating medium by combining base materials made of thermosetting resins such as phenol resins and epoxy resins, or by combining them with other base materials, the conventional method is to heat and pressurize with a large number of rolls. However, this conventional example had the disadvantage that the pressure between the rolls was low, which affected the product.

In addition, as another conventional example, a method is known in which a laminate is manufactured by heating and pressing a pressure medium such as water or oil through a base material layered between two continuous metal belts that face each other and move in the same direction. However, in this case, a solid sealant was used to seal between the inner periphery of the pressure plate, which is pressed through a pressure medium such as water or oil, and the continuous metal belt. There was a problem that a large amount of friction was generated between the two, reducing the sealing effect and damaging the sealing part, making it impossible to seal accurately. The present invention was invented in view of the above-mentioned conventional drawbacks, and its purpose is to provide magnets around the inner and outer peripheries of a pressure plate,
By sealing between the magnet and the continuous metal belt with a magnetic fluid, since the seal part is a fluid, there is almost no friction between the seal part and the continuous metal belt, and the seal can be maintained reliably for a long time. To provide a press device that increases the sealing effect and can perform stable sealing over a long period of time.

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

In FIG. 1, reference numeral 1 denotes continuous metal belts, which are vertically opposed and move in the same direction. Reference numeral 7 in FIG. 1 is a drive roll for driving the continuous metal belt 1. Reference numeral 4 denotes a pressure plate for pressurizing each opposing surface of the upper and lower continuous metal belts 1 from above or below, and this pressure plate 4 has a heating section 8.

A groove 9 is provided around the outer periphery of each inner surface of the upper and lower pressure plates 4, and a magnet 5 and a partition member 10 are fitted into the groove 9. That is, as shown in FIG. 2, the concave grooves 9 are arranged so that the magnet 5 is in the center and the partition members 10 are located on both sides thereof.
The groove 9 is fitted over the entire length of the groove 9. Here, the partition material 10 protrudes beyond the magnet 5, and a recess 11 is formed by the magnet 5 and the partition materials 10 on both sides. Further, the partition member 10 protrudes beyond the inner surface of the pressure platen 4, as shown in FIG. A magnetic fluid 6 is used to seal between the magnet 5 provided around the outer periphery of the inner surface of the pressure plate 4 and the continuous metal belt 1. A pressure medium 3 such as water or oil is sealed between the inner surface of the belt 4 and the continuous metal belt 1 facing the belt. Here, the magnetic fluid 6 is a colloidal solution in which fine magnetic powder is extremely stably dispersed in a liquid phase, and the magnetic particles do not aggregate or settle due to gravity or magnetic fields, and appear to be It behaves like a magnetic liquid and is sometimes called a magnetic liquid or magnetic sol. When the magnetic fluid 6 is sealed in this way, the magnetic fluid 6 behaves like a magnetic liquid, so the magnetic fluid 6 is attracted by the magnet 5 and the pressure medium 3 is not leaked to the outside. In addition, friction with the continuous metal belt 1 can be almost eliminated. Then, the base material 2 made of thermosetting resin such as phenolic resin or epoxy resin is stacked or combined with other base materials 2 and passed between vertically opposing continuous metal belts 1, and is pressed by a pressure plate 4. medium 1
By heating and pressing the metal continuous belt 1 through the metal continuous belt 1, the laminated base materials 2 are continuously heated and pressed to form a laminate. Although water and oil are used as the pressure medium 3 in the above embodiments, a magnetic fluid 6 may also be used as the pressure medium 3. In this way, when the magnetic fluid 6 is used as the pressure medium 3 instead of water or oil, there is no need to separate the pressure medium 3 and the magnetic fluid 6, and there is no fear that they will be mixed. FIG. 4 shows yet another embodiment of the invention.

In this embodiment, magnets 5 are arranged in multiple stages on the inner surface of the pressure plate 4.
around each magnet 5 and a continuous metal belt 1 facing it.
A magnetic fluid 6 is used to seal the space between the two.
When the seal parts are provided in multiple stages as shown in Fig. 4, the pressure at each part shown as Pl, P2, PO in Fig. 4 is changed to P1>P2.
〉PO can be gradually lowered, resulting in a device that can withstand high pressure and has increased safety. Although FIG. 4 shows an example of a two-stage seal, it is of course possible to use a seal with three or more stages. As described above, the present invention is a press device that heats and presses a base material through a pressure medium by passing it between two metal continuous belts that face each other and move in the same direction. There is no risk of the pressure becoming low between the rolls as with pressurized products, and it is possible to continuously and accurately heat and press the substrate to form a precise laminate. A magnet is placed around the outer periphery of the inner surface of the pressure plate that presses through the pressure medium, a magnetic fluid is used to seal between the magnet and the continuous metal belt, and the pressure medium is sealed in the area surrounded by this seal. Therefore, it is possible to reliably prevent the pressure medium from leaking outside due to attraction of the magnetic fluid by the magnet, and there is almost no friction between the magnetic fluid and the continuous metal belt. This has the advantage that there is no fear that the seal portion will be worn out due to friction and the seal will break, and that a stable sealing effect can be obtained over a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a schematic view of a laminate being heated and pressed by the press device of the present invention, Fig. 2 is an enlarged sectional view taken along the line X-X of Fig. 1, and Fig. 3 is used in the present invention. FIG. 4 is a schematic top view of the pressure plate and an enlarged cross-sectional view of the sealing portion of another embodiment of the present invention (an embodiment in which the sealing portion is provided in multiple stages), in which 1 is a continuous metal belt and 2 is a base. 3 is a pressure medium, 4 is a pressure plate, 5 is a magnet, and 6 is a magnetic fluid.

Claims (1)

[Claims] 1 In a press machine that manufactures a laminate by passing a base material between two continuous metal belts facing each other and moving in the same direction and applying heat and pressure through a pressure medium, the inner periphery of the press plate that presses the continuous metal belt through a pressure medium. A press device characterized in that a magnet is disposed around the belt, a magnetic fluid is used as a seal between the magnet and a continuous metal belt, and a pressure medium is enclosed in a part surrounded by the seal part.