Patent ID: 8475156
Filing Date: 2013-07-02
Classification: B29C

Abstract:
1. An injection mold for molding a product having a hook portion, comprising: a stationary mold defining a sprue channel; a return pin vertically fastened in the stationary mold and having a bottom end thereof projected under the stationary mold; a movable mold positioned under the stationary mold when the injection mold is closed, a shaping cavity being defined between the stationary mold and the movable mold and connected with the sprue channel for molding the product, the movable mold defining an inserting perforation extending slantwise to make a top end thereof connected with the shaping cavity, and a receiving groove connected with a bottom end of the inserting perforation, a top end of the inserting perforation being further extended sideward to form a receiving gap communicating with the shaping cavity, the inserting perforation being inclined towards the same direction as the extended direction of the receiving gap from the top end to the bottom end thereof, the movable mold further defining a guiding hole vertically extended to penetrate through a top of the movable mold, the guiding hole having a bottom end connected with the receiving groove, the bottom end of the return pin stretching into the receiving groove through the guiding hole; an ejector mechanism including a slide block movably located in the receiving groove, a supporting bar vertically and movably inserted in the movable mold and further stretching into the receiving groove to prop against a bottom of the slide block, and an inclined ejector pin having a tail at a top thereof, the inclined ejector pin being movably inserted in the inserting perforation with a bottom thereof being fastened on the slide block, wherein the slide block is pressed downward by the return pin to make the tail of the inclined ejector pin received in the receiving gap when the injection mold is closed, outsides of the tail are spaced from insides of the receiving gap to mold the hook portion of the product thereamong, when the injection mold is opened, the slide block drives the inclined ejector pin to move upward and sideward along the inserting perforation under an upward push of the supporting bar so as to make the hook portion of the product parted from the tail of the inclined ejector pin; and a plurality of ejector pins movably inserted in the movable mold for ejecting upward the product out of the injection mold.