Patent ID: 7794226
Filing Date: 2010-09-14
Classification: B29C

Abstract:
1. An injection molding device configured for manufacturing a foil decorated molding, comprising: a male mold defines a channel therein; a female mold defines a cavity therein; a foil positioned between the male and female molds; a thermal medium source connected to the channel of the male mold for inputting thermal medium into the cavity via the channel to press the foil to cling to the cavity; and a plug received in the channel and movable toward or away from the female mold for opening or closing the channel; wherein the channel comprises a bell-mouthed recessed portion with a large end thereof facing the female mold, a conduit communicating with a small end of the recessed portion, and a slender duct with one end communicating with the conduit and the other end connected to the thermal medium source, a block protrudes in the conduit from one end of the conduit opposing to the recessed portion, a through hole is defined in the block, the plug comprises a taper-shaped obturating portion for obturating the recessed portion of the channel to open or close the channel; wherein the plug further comprises a pole extending from a small end of the obturating portion, the pole extends through the through hole of the block, a fastening member is fixed to a distal end of the pole, a resilient member fits about the pole and is resiliently located between the block and the fastening member.