Straight ejecting and inclined pulling demolding device of deep reversed buckle in injection mold

Abstract

The invention discloses a straight ejecting and inclined pulling demolding device of a deep reversed buckle in an injection mold. The device comprises a core pulling block (1), an inclined slide block (2), a transverse slide block (3), an inclined slide base (4), a base plate (5), a guide sleeve (6) and a straight ejecting rod (7). The inclined slide block is provided with an inclined chute and a transverse chute; the inclined slide base is provided with an inclined slide rail; the core pulling block is positioned on the upper surface of the inclined slide block; the transverse slide block is positioned in the transverse chute; the guide sleeve is connected below the inclined slide base by the base plate; the inclined slide block is connected with the inclined slide base by a inclined chute rail; the upper part of the straight ejecting rod penetrates through the guide sleeve to be connected with the transverse slide block; the core pulling block, the inclined slide block, the inclined slide base, the base plate and the guide sleeve are positioned in an accommodating tank of a molding core; the core pulling block and the inclined slide block are in sliding contact with the molding core; the inclined slide base and the guide sleeve are fixedly connected with the molding core by the base plate; the lower end of the straight ejecting rod is fixedly connected with a top plate; and in working, the straight ejecting rod drives the inclined slide block and the core pulling block to upwards move by the transverse slide block, and the inclined slide block and the core pulling block move from left to right to be pulled out from the deep reversed buckle in a product while upwards moving, so that the injection mold provided with the deep reversed buckle achieves the purposes of shortening of an ejecting travel, body reduction and cost reduction.

Description

technical field [0001] The invention relates to a core-pulling and demoulding device for an injection mold, in particular to a straight-top inclined demoulding device for an inner deep undercut of an injection mold used to extract a core block embedded in a deep undercut of a product from an injection mold. Background technique [0002] Undercut refers to the structure of flanges, hooks or ribs in which the direction of core pulling and demoulding intersects with the opening and closing direction of the mold in injection molded products; The other side is called the inner side; according to the position, undercuts are divided into two types: outer undercuts and inner undercuts; for outer undercuts, the prior art uses a laterally moving horizontal slider for core-pulling and demoulding; for inner undercuts, now There is a technology that uses an inclined top core-pulling device composed of an inclined ejector rod and an inclined core-pulling block to perform core-pulling and ...

AI Technical Summary

Problems solved by technology

[0002] Undercut refers to the structure of flanges, hooks or ribs in which the direction of core pulling and demoulding intersects with the opening and closing direction of the mold in injection molded products; The other side is called the inner side; according to the position, undercuts are divided into two types: outer undercuts and inner undercuts; for outer undercuts, the prior art uses a laterally moving horizontal slider for core-pulling and demoulding; for inner undercuts, now There is a technology that uses an inclined top core-pulling device composed of an inclined ejector rod and an inclined core-pulling block to perform core-pulling and demoulding through the oblique movement of the inclined ejector rod, also known as inclined ejector rod core-pulling; the depth or length of the undercut is greater than the wall thickness of the product Three times as much is called deep undercut, and the deep undercut located on the inner side of the product is referred to as inner deep undercut; for inner deep undercut, since the angle of the inclined ejector rod to adapt to the inclined roof is small, the inclined angle is less than or equal to 12°, Therefore, the ejection stroke is long, and the ejection stroke is long so that the mold body is large, and a large-scale injection molding machine needs to be used during the operation of the mold, so that the overall cost of the manufacture and operation of the mold is high; therefore, the prior art has a long ejection stroke, Problems and shortcomings of large mold shape and high comprehensive cost

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