Injection mold capable of shearing film gate within mold

Details Injection mold capable of shearing film gate within mold Injection mold capable of shearing film gate within mold

B - Operations, Transporting

29

C

18/711

B29C 45/28 (2006.01) B29C 45/27 (2006.01) B29C 45/33 (2006.01) B29C 45/38 (2006.01)

Patent

CA 2029091

An injection mold of the type in which a film gate of a resin is formed and in which shearing of the film gate is conducted by a movement of a gate cutter alone. The gate cutter has a stepped cylindrical form with a main cylindrical portion of a greater diameter and a coaxial end cylindrical portion of a smaller diameter. When the mold is closed, the end cylindrical portion being received in the bore of a confronting die leaving therebetween an annular gap of a radial size which determines a gate thickness. The outer peripheral surface of the portion of the gate cutter received in the bore of the die presenting a gate land.

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