JPH04134300U - Heat forming presses such as FRP presses - Google Patents

Abstract

(57) [Summary] [Purpose] This invention prevents the uprights from becoming parallel due to the bed stretching from side to side due to heat transfer when press molding FRP or SMC molding materials by heating the mold. There is something to do. [Structure] A hydraulic tank 8 integrally connects the upper crown 5 of the upright 3 on which the slide 4 of the press 1 for thermoforming plastic materials such as FRP slides up and down.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a heat forming press such as an FRP press.

0002

[Conventional technology]

In recent years, FRP and SMC resin molded products have been used for bathtubs, automobile parts, and other products. There is. These molded products are being gradually molded using press molding machines.

0003 In FRP presses, the mold is heated to around 140°C using a heating device to form the product. Therefore, even if you insert insulation material behind the mold, heat will not be transferred to the slide or bed. be done. Therefore, in addition to warping due to slide pressure, the slide warps due to heat transfer. , warping occurred as the bed stretched laterally.

0004 Therefore, three pressure cylinders were installed in the crown part of the press machine, and the central part and control the output of the pressure cylinders on both sides to prevent slides and beds as much as possible. Measures are being taken to prevent the door from bending.

[0005]

[Problem that the idea aims to solve]

However, using three pressure cylinders makes control that much more difficult. Ma In addition, it is compatible with flanging type hydraulic presses where the crown part is divided into left and right sides. It was impossible. When press-forming with a flanging-type hydraulic press, the bed expands. The uprights were distorted into a figure-eight shape.

[0006]

[Means to solve the problem]

This invention was developed in consideration of the above points, and in order to solve the above problems, FRP presses for plastic materials, etc. with one pressure cylinder on each side of the ride. In a hot forming press, the left and right sides of the upright that slides up and down the slide. The upper crown part of the hydraulic tank is integrally connected with the hydraulic tank. The purpose of the present invention is to provide a press for hot molding such as an FRP press.

[0007]

[Effect]

According to this invention, the upper crown parts on both the left and right sides of the upright are integrally connected. The crown part is protected by thermal expansion caused by the heat of the hydraulic oil in the hydraulic tank. It stretches in the left and right direction, canceling out the bed expansion due to mold heating, and upright. It can prevent deformation into a figure eight shape.

[0008]

【Example】

The present invention will be explained below based on examples. Figures 1 and 2 show one implementation of the present invention. This example was carried out on a flanging type heat forming press. FRP and SM The press 1 for heat forming C etc. has uprights 3 hanging on both sides of the bed 2 as shown in the figure. The slides 4 are slidably disposed on the uprights 3 on both sides. stop Then, attach the pressure cylinders 6 to the crowns 5 of the upper parts of the uprights 2 on both sides. The slide 4 is arranged so that press forming can be performed by driving the slide 4 up and down.

[0009] As shown in Figures 1 and 2, the 5 parts of the crown divided into left and right parts are A hydraulic tank 8 containing a hydraulic pressure 7 was installed so that the left and right crowns were installed. 5 are integrally connected. The hydraulic tank 8 is loaded with predetermined hydraulic oil, and 35~ It is heated to an appropriate temperature of 50°C using an oil heater (not shown). 9 is oil This is a manifold for pressure piping.

0010 Therefore, the upper mold is attached to the slide 4 and the lower mold is attached to the bed 2, and these molds are When press-molding the molding material by heating it, an insulating material is inserted at the back of the mold. , a temperature of approximately 40-50° C. is transferred to the bed 2. On the other hand, the upper crown 5 As mentioned above, the hydraulic oil in the connected hydraulic tank 8 is heated to 35 to 50°C. , the space between the crowns 5 expands from side to side due to thermal expansion of the hydraulic tank 8, and the amount of expansion on the bed 2 side is approximately the same. It will be about the same amount. Therefore, the upright 3 does not deform into a figure eight shape as in the conventional case. Press forming can be performed while maintaining the left and right uprights 3 in parallel. I can do it.

[0011] Although the flanging type press has been explained above, other heat forming presses can also be used. The same applies to

0012

[Effect of the idea]

As mentioned above, in this invention, due to the increase in heat transfer to the bed due to heating of the mold, On the other hand, the hydraulic pressure is increased by heating the hydraulic oil in the hydraulic tank that connects the upper crown. The tank extends from side to side, extending the space between the crowns, which can offset the amount of extension in the bed. Wear. Therefore, it is important to prevent the upright from deforming into a figure eight shape as much as possible. It is possible to accurately press mold molding materials such as FRP and SMC. .

[Brief explanation of drawings]

FIG. 1 is a partially cutaway explanatory front sectional view of an embodiment of the present invention;

FIG. 2 is a plan view of the crown portion same as above.

[Explanation of symbols]

1... Heat molding press 3... Upright 4
…Slide 5…Crown 6…Pressure cylinder 8
…hydraulic tank

──────────────────────────────────────────────── ─── Continued from the front page (51) Int.Cl. ⁵ identification code Internal reference number FI Technical display location B30B 11/02 A 7128-4E 15/34 A 7128-4E (72) Inventor Motoyuki Yoshikawa Hyogo Prefecture 15-1 Minamifutami, Futami-cho, Akashi-shi, Kawasaki Yuko Co., Ltd. (72) Designer: Ayao Kamiyoshi Hyogo Prefecture, Akashi-shi, Futami-cho, Minami-Futami 15-1, Kawasaki Yuko Co., Ltd. (72) Designer: Katsumi Maeda Hyogo 15-1 Minamifutami, Futami-cho, Akashi City, Akashi Prefecture, Kawasaki Yuko Co., Ltd. (72) Designer: Kenji Hashimoto 15-1 Minamifutami, Futami-cho, Akashi City, Hyogo Prefecture, Kawasaki Yuko Co., Ltd. (72) Designer: Yasuo Miyanaga Hyogo Inside Kawasaki Yuko Co., Ltd., 15-1 Minamifutami, Futami-cho, Akashi City, Hyogo Prefecture (72) Creator Isao Hayasaki Inside Kawasaki Yuko Co., Ltd., 15-1 Minamifutami, Futami-cho, Akashi City, Hyogo Prefecture

Claims (1)

[Scope of utility model registration request] [Claim 1] In a heat-forming press such as an FRP press for plastic materials, etc., in which one pressure cylinder is arranged on each side of the slide, the upper crown portions on both the left and right sides of an upright that slides up and down the slide. A press for hot forming, such as an FRP press, characterized in that the presses are integrally connected by a hydraulic tank.