Large-angle small-gap side core-pulling mechanism of angle-ejector-type oblique sliding block of injection mold

Abstract

Disclosed is a large-angle small-gap side core-pulling mechanism of an angle-ejector-type oblique sliding block of an injection mold. The large-angle small-gap side core-pulling mechanism includes anupper composite plate and a lower composite plate. A mold cavity is formed below the upper composite plate. Support blocks are arranged on the lower composite plate. An upper ejector retainer plate, alower ejector retainer plate and an ejector are arranged on the lower composite plate between the support blocks. A backing plate is arranged on each support block. A mold core is arranged on each backing plate. Injection molded plastic parts are arranged between the mold cores and the mold cavity. An inverted hook is arranged below each plastic part. Retaining ribs are correspondingly arranged on the front side and the lower side of each inverted hook. The large-angle small-gap side core-pulling mechanism is characterized in that direct-ejector rods are arranged on the upper ejector retainerplate and the lower ejector retainer plate, a mounting hole is formed in each mold core, a sliding block seat is arranged in each mounting hole, an oblique sliding seat is arranged on each sliding block, a sliding slot is formed in one side of each oblique sliding seat, a penetrating hole is formed in each oblique sliding seat, a guiding pushing block is arranged in each penetrating hole, the direct-ejector rods penetrate through the sliding block seats and are fixed to the guiding pushing blocks, an oblique sliding block is arranged on one side of each oblique sliding seat, the upper part ofeach oblique sliding block is matched with the inverted hook of the corresponding plastic part, a sliding rail is arranged on one side of each oblique sliding block, the sliding rails are matched with the sliding slots, an inserting hole is formed in each oblique sliding block, and the inserting holes are connected with the guiding pushing blocks.

Description

technical field [0001] The invention relates to an injection mold, in particular to a straight top type inclined slider with a large angle and a small gap side core-pulling mechanism of the injection mold. Background technique [0002] In injection molds, the upper and lower ejector plates of most injection molds are covered with various ejector parts such as straight ejector pins and inclined ejector pins. In the existing technology, inclined thimbles or straight thimbles are usually used to drive the inclined slider structure. The inclined thimbles pass through the core obliquely and then cooperate with the undercut of plastic parts. It occupies a large space in the core and is easy to affect the core. The cooling water channel in the middle is not applicable in many molds, and the upper end of the straight thimble is equipped with an inclined slider structure. Although the space occupied by the core is small, when the side core-pulling distance of the undercut is small, t...

AI Technical Summary

Problems solved by technology

[0002] In injection molds, the upper and lower ejector plates of most injection molds are covered with various ejector parts such as straight ejector pins and inclined ejector pins. In the existing technology, inclined thimbles or straight thimbles are usually used to drive the inclined slider structure. The inclined thimbles pass through the core obliquely and then cooperate with the undercut of plastic parts. It occupies a large space in the core and is easy to affect the core. The cooling water channel in the middle is not applicable in many molds, and the upper end of the straight thimble is equipped with an inclined slider structure. Although the space occupied by the core is small, when the side core-pulling distance of the undercut is small, the corresponding oblique slider volume It should also be very small, and the diameter of the straight thimble that pushes the inclined slider should also be thin. If the straight thimble is too thin, its structural strength will be poor, easy to bend and deform, and its service life is short. It needs to be replaced frequently, which increases the mold cost.

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