US 5,431,554 AGranted

Vertical injection molding machine

AssigneeYoshida Kogyo K.K.

InventorsHiroshi Yoshida, Kazuki Kuse

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Abstract

A lower mold attachment plate, on the upper surface of which the fixed mold half is attached, is fixed to a machine base. An upper mold attachment plate, to which the movable mold half is attached in opposite to the fixed mold half, is movable upwardly and downwardly by mold moving cylinders. A rotary disc, which has plural injection cylinder insertion holes in the same circle in vertical alignment with plural injection cylinder insertion holes of the upper mold attachment plate, is rotatably pivoted on the upper surface of the upper mold attachment plate. Plural injection units arranged over the rotary disc in predetermined distances along the circle are joined with the rotary disc as a unit. As the rotary disc is rotated to a divided angular position, a slide fastener chain is conveyed along the extension of the chain travelling path, by a predetermined length at every injection molding by means of chain conveyer.

Claims8

Dependent claims

A vertical injection molding machine, comprising:

(a) a lower mold attachment plate fixedly secured to a machine base;
(b) a fixed mold half attached to an upper surface of said lower mold attachment plate;
(c) an upper mold attachment plate movable upwardly and downwardly by mold moving cylinders and having at least one injection hole;
(d) a movable mold half attached to said upper mold attachment plate in confronting relation with said fixed mold half and having an injection port open to said one injection hole;
(e) a rotary disc rotationally mounted on an upper surface of said upper mold attachment plate and having a plurality of peripheral injection cylinder insertion holes each alignable with said at least one injection hole of said upper mold attachment plate;
(f) a plurality of injection units situated above and connected to said rotary disc, said injection units being arranged peripherally spaced apart and aligned with said peripheral injection cylinder insertion holes;
and
(g) means for angularly positioning said rotary disc.

5 more elements

Dependencies are inferred from the claim text.