Large stroke core-pulling structure of intermittent shaft hole of injection mold

Abstract

The invention discloses a large-stroke core pulling structure of an intermittent rotary shaft hole of an injection mold. The large-stroke core pulling structure comprises a movable mold plate, a core pulling oil cylinder, a core pulling oil cylinder fixing base, a slide block insert pin, an obverse slide block and an obverse oil cylinder; the obverse oil cylinder is fixed to the obverse side of the movable mold plate, the rod end of a piston rod of the obverse oil cylinder is connected with the outer end of the obverse slide block, the obverse slide block is in sliding connection with the movable mold plate, the inner end of the obverse slide block extends into a cavity, and a plurality of guide holes are formed in the inner end of the obverse slide block at intervals; and a cylinder body of the core pulling oil cylinder is fixed to the left side of the movable mold plate, the rod end of a piston rod of the core pulling oil cylinder is connected with the outer end of the slide block insert pin, and the inner end of the slide block insert pin extends into the movable mold plate and penetrates into the guide holes in the obverse slide block. As the core pulling oil cylinder drives the slide block insert pin to be matched with the guide holes in the obverse slide block driven by the obverse oil cylinder, the rotary shaft hole of a frame-type plastic finished product is molded, and the advantage of stable and reliable action is achieved.

Description

technical field [0001] The invention relates to an injection mold, in particular to a large-stroke core-pulling structure for an intermittent rotating shaft hole of the injection mold. Background technique [0002] Plastic injection molds are tools for producing plastic products and are widely used. Such as figure 1 As shown, in the injection molding of plastic products, since the frame plastic product 10 has intermittent shaft holes 101 inside, the core-pulling length of the shaft holes 101 is long and thin, which brings great difficulties to the design of the mold. Contents of the invention [0003] The object of the present invention is to provide a large-stroke core-pulling structure for intermittent rotating shaft holes of injection molds with stable and reliable action. [0004] For realizing the above object, technical solution of the present invention is: [0005] The present invention is a large-stroke core-pulling structure for intermittent rotating shaft hole...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, in the injection molding of plastic products, since the interior of the frame plastic product 10 has intermittent shaft holes 101, the core-pulling length of the shaft holes 101 is long and thin, which brings great difficulties to the design of the mold.

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