Pulled core oblique roof structure and injection mold

Abstract

The invention discloses a pulled core oblique roof structure. The pulled core oblique roof structure comprises a rear mold top plate and a pulled core sliding base which are arranged on the outer sideof a rear mold, a pulled core base arranged inside the rear mold, a pulled core needle plate and a guide block. The pulled core sliding base is fixedly installed on the rear mold top plate. The rearmold top plate is connected with the rear mold through a drag hook. The rear mold is connected with a front mold through the drag hook. The guide block is fixedly installed inside the rear mold. The side wall of the pulled core base is in sliding fit with the guide block. One end of the pulled core base is slidingly connected with the pulled core sliding base. The pulled core needle plate is located on the inner side of the pulled core base and fixed to the rear mold. Multiple pulled core oblique roof sets are arranged on the pulled core needle plate. Each pulled core oblique roof set comprises an oblique roof guide sliding block and one or more pulled core oblique roofs. One end of each pulled core oblique roof is in movable connection with the pulled core needle plate. Each oblique roofguide sliding block is fixedly connected with the pulled core base. A pulled core oblique roof in the same set is driven to move by the corresponding oblique roof guide sliding block. The invention further discloses an injection mold. According to the pulled core oblique roof structure and the injection mold, the structural design is ingenious; the fabricating cost is lowered; the mold opening time is reduced; production efficiency is improved; and the rate of finished products is high.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to a core-pulling inclined roof structure and an injection mold. Background technique [0002] The automotive glove box is made of PC+ABS material and molded by integral injection molding. After the glove box is formed in the mold, due to the undercut structure, it is necessary to set a core pull in the rear mold. In addition, the non-appearance surface of the glove box has many There are also many undercuts on the ribs. Before the front mold and the rear mold are opened, it is necessary to pull the core to exit the undercut, and the inclined top on the rib to exit the undercut. Due to the existence of multiple undercuts, it is necessary to withdraw the undercuts before the mold is opened, so as to avoid the core-pulling from hitting the mold. If the inclined top does not withdraw from the undercuts, it will cause ribs on the non-appearance surface of the glove box and fixe...

AI Technical Summary

Problems solved by technology

Due to the existence of multiple undercuts, it is necessary to withdraw the undercuts before the mold is opened, so as to avoid the core-pulling from hitting the mold. If the inclined top does not withdraw from the undercuts, it will cause ribs on the non-appearance surface of the glove box and the fixed block is destroyed

If an independent drive mechanism is configured for the core-pulling and each inclined roof, the structure of the mold will be complicated, the production cost will increase, and the process will be difficult to manufacture and install.

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