Secondary core-pulling and ejection demoulding device by asynchronous inclined downward ejection

Abstract

The invention discloses a secondary core-pulling and ejection demoulding device by asynchronous inclined downward ejection. The device provided by the invention comprises an inclined ejection core block (1), a vertical slide block (2), a transverse slide block (3), a transverse slide block support plate (4), a poke rod (5), a deblocking block (6), a latch hook block (7), a spring bolt block (8) and a limit guide pillar (9). By the adoption of the device composed of the above members, the technical scheme of bidirectional backoff core-pulling demoulding is realized by a asynchronous inclined downward ejection mode, problems and insufficiencies of complex structure, large size and high cost existing in the prior art are overcome, and structure simplification, size reduction and cost reduction purposes of an injection mould which requires vertical and horizontal bidirectional backoff core-pulling are achieved.

Description

technical field [0001] The invention relates to an ejection and demoulding mechanism of an injection mold, in particular to an asynchronous slanted top for ejecting and demoulding a core block embedded in a vertical and horizontal two-way inverted structure of an injection molded product. Pull the core out of the demoulding device. Background technique [0002] The inclined top core pulling of the injection mold is usually a synchronous inclined top upward oblique pulling, that is, synchronous with the upward (longitudinal) ejection and demoulding of the product, the inclined ejector rod carries the oblique core pulling block and moves upward obliquely, and the oblique core pulling The block is pulled out of the mold from the undercut structure of the product. The upward oblique drawing of the synchronous inclined top is only suitable for the oblique drawing of the core block with a single horizontal structure undercut; if the product is in the same narrow area, there are bo...

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Problems solved by technology

[0002] The inclined top core pulling of the injection mold is usually a synchronous inclined top upward inclined pull, that is, synchronous with the upward (longitudinal) ejection of the product, the inclined ejector rod carries the inclined core block and moves upward obliquely, and the inclined core pulls The block is pulled out of the mold from the undercut structure of the product. The upward oblique drawing of the synchronous inclined top is only suitable for the oblique drawing of the core block with a single horizontal structure undercut; if the product is in the same narrow area, there are both horizontal undercut and direction The vertical undercut structure that hinders the upward and oblique movement of the oblique core block, that is, the vertical and horizontal two-way inverted structure of the product, the mold needs to be equipped with a vertical and horizontal two-way undercut structure core block, and with the upward (longitudinal) ejection of the product, Gradually moving downwards obliquely to remove the mold from the product is called the inclined top downward oblique extraction; for the oblique top downward oblique extraction, the existing technology adopts the oil cylinder core pulling, that is, the product is pushed upwards on the mold While detaching from the core, the core block of the vertical and horizontal two-way reverse buckle structure is driven by the oil cylinder, and it is gradually moved downward and obliquely to be pulled out from the product for demoulding; due to the strict synchronous coordination between the core pulling of the oil cylinder and the pushing of the mold, the oil cylinder and its accessories The auxiliary mechanism occupies a large internal volume of the mold and has a complex structure, resulting in a large mold shape and high cost. In addition, during injection molding production, a large-scale injection molding machine with a large working stroke is required, resulting in high injection molding production costs. Therefore, the existing technology has structural Problems and deficiencies of complexity, large size and high cost

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