Abstract: An angular ejector mechanism for ejecting a plastic article with a recess in an inner side includes an angular ejector pin, a sliding pin, an elastic elements and a stopping block. The angular ejector pin includes a molding plate and a supporting plate. A moving hole and a sliding groove are respectively defined in a front face and an opposite rear face of the molding plate to communicate with each other. The sliding pin has a stopping protrusion dividing the sliding pin into a moving portion and a sliding portion. A sliding channel is defined on a front face of the stopping block. The sliding includes a vertical channel and a inclined channel. The moving portion is received in the moving hole of the molding plate, and the sliding portion slides from the sliding channel into the inclined channel until the angular ejector pin separates from the plastic article.

Abstract: A core-pulling mechanism for pulling a slide core and a threaded-pin core in an injection mold includes a hinge shaft having two ends with polygonal cross-section, an shaft sleeve assembled with a rear of the hinge shaft, a baffle block having axial through opening allowing the hinge shaft to pass through and rotate therein, a slider having a through hole for receiving the baffle block and a semi-closed transmission hole defined in a rear wall, a transmission shaft assembled in the transmission hole and fixed to the slider, and a guide block. The baffle block and the guide block have inclined guiding bulges and inclined guiding grooves engaging with each other to guide the baffle block to slide. While the transmission shaft drives the slider to move backward, the hinge shaft following with the slider move backward and slide in the shaft sleeve, thus, the distance of the backward movement of the cores pulled by the core-pulling mechanism is not limited.

Abstract: An ejector pin includes a pin shaft and a pinhead locating on one end of the pin shaft. The pin shaft and the pinhead are eccentric and have different axle centers. The caliber of the pinhead is bigger than that of the pin shaft. An injection mold with the ejector pin includes a pushing board which forms at least one head-receiving cavity and one shaft hole extending from the head-receiving cavity to receive the ejector pin. The head-receiving cavity and the shaft hole are eccentrically arranged. When the injection mold is opened, the ejector pin stretches into a mold housing formed between a female core and a male core of the injection mold and pushed a product out of the mold housing. The ejector pin is fixed in the pushing board to avoid rotating of the ejector pin when pushing the product out of the mold housing.