To provide equipment for manufacturing a toothed belt of a thermoplastic elastomer which is made free of disarrangement of lines of core wires by making the flow of a molten resin excellent, and a mold device used therefor.
This equipment for manufacturing the toothed belt of the thermoplastic elastomer has an injection molding machine 30 which melts and injects the thermoplastic elastomer, a pair of separable outer dies 2a and 2b having a first-layer molding space 5a and a second-layer molding space 5b, an inner die 3 which can be held in each space of the outer dies and has a tooth part forming part, a ring gate 14 so formed as to feed the molten resin into the tooth part forming part of the inner die 3, and a film gate 46 which is formed for the outer die holding the inner die 3 having the core wire wound on and is connected with a runner 7. The ring gate 14 is so formed that the gate volume is changed from a gate entrance 8a connected with the runner 7 to a gate end 41 provided at the position opposite to the entrance, in the first-layer molding space 5a of the outer die holding the inner die 3. The film gate 46 is so formed that the width of the winds of the core wire is made to be the maximum gate width and that the molten resin is made to run in the direction of winding of the core wire.
HIOKI KATSUYUKI
KAWAHARA KAZUTOMO
TAGAWA TAKAYUKI
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