JPS6132732Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is for molding composite molded products using the so-called outsert method, in which a metal substrate is inserted into a mold and then resin is injected to simultaneously form multiple resin members on the substrate. This relates to the improvement of molds.

In recent years, this type of molded product has been adopted and implemented in mechanical boards of tape recorders, radio receivers, record players, etc. as an effective means of streamlining the production process and saving labor. Nowadays, this has been further developed, and there is a tendency to use resin molded products as much as possible for various parts attached to the mechanical board. Therefore, in such cases, the multiple resin members to be attached to the mechanical board are molded in a separate mold from the mechanical board, and then separated and attached to the mechanical board. There were some shortcomings. In other words, the mold cost is high because a mold for the mechanical board and a mold for the parts to be attached to the board are required separately, and the parts to be attached to the board must be collected and prepared in advance.
There are drawbacks such as the fact that this work takes a relatively large amount of time.

Therefore, in order to solve this problem, the present invention provides a mold that can simultaneously make mounting members on the mechanical board when forming the board.An example of the mold is described below along with drawings. explain. In FIG. 2, 1 is a metal substrate, 2 is a substrate support member fixed to the substrate 1 by simultaneous molding, 3 is a guide hole of the reciprocating member 4, and 5 is a locking hole of the retaining member 6 of the member 4. It is. A resin frame 7 is fixed around the guide hole 3 and locking hole 5 by simultaneous molding. 8 is a runner that connects each member and serves as a resin flow path. The reciprocating member 4 and its retaining member 6 are formed by molding at the same time as the substrate 1 is formed, as shown in FIG. That is, it is formed using runners between members fixed to the substrate 1, and is separated during assembly. Furthermore, to explain the mold using FIG. 1, the mold is composed of an upper mold 9 and a lower mold 10. A recess 12, a second recess 13 facing the main surface 1a of the substrate 1, and a resin passage 14 for flowing the resin are formed, and a first recess 12' facing the through hole 11 is provided in the lower mold. I'm being kicked. Therefore, the upper and lower molds 9 and 10 are placed with the substrate 1 in between.
When they are joined and resin is injected through the resin passage 14, the first recesses 12, 12' form the substrate support member 2, and the second recess 13 forms the reciprocating member 4. The composite molded substrate thus formed is sent to an assembly process in the form shown in FIG. 2, and during assembly, the reciprocating member 4 and the retaining member 6 are separated and assembled as shown in FIG. 3.

As explained above, according to the mold for forming a composite molded product of the present invention, the first recess for forming the resin member to be locked in the through hole provided in the metal substrate; A second recess is formed on the main surface of the resin member to be separated and attached to the substrate after formation, and a resin passage is provided for simultaneously injecting resin into the first and second recesses. Therefore, the parts to be fixed to the metal board and the parts to be assembled can be molded at the same time, which reduces molding time and mold costs, and eliminates the need to collect and prepare parts to be assembled to the board in advance, reducing assembly man-hours. reduction can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a mold according to an embodiment of the present invention, Fig. 2 is a perspective view of a composite molded substrate obtained using the same mold, and Fig. 3 is a perspective view showing the assembled state of the same substrate. It is a diagram. 1... Metal substrate, 2... Substrate support member, 4...
...Reciprocating member, 9, 10...Mold, 11...Through hole, 12, 12'...Recess for forming substrate support member (first recess), 13...Recess for forming reciprocating member (second recess), 14...resin passage.

Claims (1)

[Scope of utility model registration request] a first recess for forming a resin member to be locked in a through hole provided in a metal substrate; and a resin member formed on the main surface of the metal substrate, separated after formation, and attached to the substrate. A mold for forming a composite molded product, the mold having a second recess for forming a mold, and a resin passage for simultaneously injecting resin into the first and second recesses.