JPH0638650Y2 - End plate for resin molding - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end plate for resin molding which is inserted between a member to be pressed and a press plate when press-molding a resin plate.

[0002]

2. Description of the Related Art Conventionally, when a resin plate-like material such as a multi-layer printed circuit board is press-molded, a mirror plate which is interposed between the resin plate-shaped product and the press plate adheres to the resin that has exuded from the laminate during molding. The surface is polished by a polishing device for reuse. The polishing of the mirror plate is performed, for example, by conveying and driving the mirror plate and pressing a rotating polishing brush on the surface thereof. The polishing method includes a wet method of polishing in a wet state and a dry method of polishing in a dry state without using water.

[0003]

However, even if the polishing brush is pressed against the mirror surface and polished as in the prior art, the polishing brush 20 contacts the end surface 14 of the end plate 10 as shown in the enlarged end view of FIG. Therefore, the resin attached to the end surface 13 of the end plate 10 cannot be removed regardless of the polishing method. As a result, when a part of the resin lump adheres to the end plate 14 of the end plate, the resin remaining on the end face of the end plate during transfer after use is transferred to the molded product to cause a molding defect. there were.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention is capable of easily removing the resin adhering to the end surface by polishing, and causing a molding defect due to the resin remaining adhering to the end surface. The purpose of the present invention is to provide a resin molding end plate.

[0005]

In order to achieve the above object, the present invention is one in which a side end portion of the surface of a resin molding end plate is formed obliquely at a predetermined angle.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of a resin molding end plate according to the present invention, and FIG. 2 is an enlarged sectional view of an end portion thereof. The illustrated resin molding end plate 10 has a predetermined thickness, and its surface (upper surface 11 and lower surface 12) is formed to have a predetermined flatness and a predetermined surface roughness. As shown in FIG. 2 which is an enlarged cross-sectional view of FIG. 1, the side end portion 13 is formed as an inclined surface 13A that is inclined at a predetermined angle θ in the direction in which the plate pressure becomes thin on both the upper surface 11 and the lower surface 12. . That is, the side end portion 13 is formed in a tapered shape with the center in the thickness direction protruding by the upper and lower inclined surfaces 13A. According to the above-described structure, during polishing after being used for molding the resin plate, the polishing brush 20 abuts the inclined surface 13A of the side end surface 13 as shown by an imaginary line in FIG. Also has a polishing effect, and the resin attached to the side end surface 13 can be removed well.

Here, the angle θ of the inclined surface 13A with respect to the upper surface 11 and the lower surface 12 is excellent in relation to the material, diameter, deformation allowance, relative speed with respect to the end plate, etc. of the brush used during polishing. It should be set to be done. As an example, the inclined surface 13A is formed at an angle of approximately 6 ° with respect to the upper surface 11 and the lower surface 12 of a mirror plate having a thickness of 1 mm, and a brush having a diameter of 150 mm in which a fibrous layer is impregnated with an abrasive has a deformation allowance of 0. 5 mm, relative speed: 2.5 m /
As a result of performing the polishing work for a minute, the resin adhered to the side end surface 13 could be satisfactorily removed. From the result of this experiment, the thickness is 1mm in the general polishing state.
If it is a mirror plate of a certain degree, it is supposed that the resin adhered to the side end surface 13 can be satisfactorily removed by polishing by forming the inclined surface 13A at about 6 ° with respect to the surface (upper surface 11 or lower surface 12). It is a thing.

[0008]

As described above, according to the present invention,
The resin adhering to the end faces can be easily and satisfactorily removed by polishing, and no defective molding due to the resin remaining adhering to the end faces even after polishing will occur.

[Brief description of drawings]

FIG. 1 is a perspective view of a resin molding end plate according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a resin molding end plate side end portion.

FIG. 3 is an explanatory view showing a conventional example of a polishing state with a brush.

[Explanation of symbols]

 10 ... End plate for resin molding 11 ... Upper surface 12 ... Lower surface 13 ... Side end 13A ... Sloping surface

Claims (2)

[Scope of utility model registration request] 1. A mirror plate which is interposed between a member to be pressed and a press plate when press-molding a resin plate-shaped article, wherein side edges of its surface are formed obliquely at a predetermined angle,
End plate for resin molding characterized by. 2. The end plate for resin molding according to claim 1, wherein side end portions of the end plate are formed obliquely from both upper and lower surfaces at a predetermined angle.