Injection molding unit

Details Injection molding unit Injection molding unit

B - Operations, Transporting

29

C

B29C 45/84 (2006.01) B29C 45/26 (2006.01) B29C 45/48 (2006.01) B29C 45/58 (2006.01)

Patent

CA 2108337

- 30 - ABSTRACT OF THE DISCLOSURE An injection molding unit having an injection molding machine 1 for injecting a molten resin plasticated in a screw cylinder 4 from a nozzle 9 fitted at the tip of the screw cylinder 4 by advancing a screw 3, and an injection mold 31 for forming a hollow 36 for use of an injection molded product 35 by a cavity mold 33 and a core mold 34, the injection molding unit further comprising a pressure relief valve 40 for releasing the resin 35 out of a resin passage when a pressure greater than a predetermined value acts at any point on the resin passage including the screw cylinder and ranging up to the terminal end of the hollow, and the cavity mold 33 being of a split construction in which a wall portion of the hollow is formed a plurality of segments.

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