Patent ID: 8529244
Filing Date: 2013-09-10
Classification: B29C

Abstract:
1. An injection mold for molding a product having at least one bar formed at one side thereof, comprising: a stationary mold, a bottom of the stationary mold being concaved upward to form a groove, the stationary mold including an inclined pillar slantwise mounted in the stationary mold with a bottom end thereof stretching under the stationary mold; and a movable mold positioned under the stationary mold when the injection mold is closed, the movable mold defining a space at a bottom thereof, and including an ejector pin plate movably disposed in the space, a movable core and a sliding block being mounted on a top of the movable mold, the sliding block defining an inserting perforation extending slantwise to penetrate therethrough for receiving the bottom end of the inclined pillar therein so as to drive the sliding block to slide towards and away from the movable core, the movable core being received in the groove and spaced from an inner periphery of the groove and an end surface of the sliding block to together define a shaping cavity for molding the product, the end surface of the sliding block further defining at least one shaping groove connected with the shaping cavity for molding the bar at the one side of the product, the movable mold further including an ejector pin and a maintaining pillar of which bottom ends are fastened to the ejector pin plate and top ends penetrate through the movable mold, wherein the top end of the maintaining pillar resists against a bottom of the sliding block to ensure the top end of the ejector pin in alignment with a top surface of the movable core when the injection mold is closed, and further avoid the ejector pin plate and the ejector pin moving upward before the sliding block slides away from the movable core under the action of the inclined pillar to make the bar completely parted from the shaping groove.