Core pulling mechanism of mold with slide self-locking mechanism

Abstract

The invention discloses a core pulling mechanism of a mold with a slide self-locking mechanism. The core pulling mechanism comprises a base, a driving device is arranged on the base, one end of the driving mechanism is connected with a core pulling assembly, the core pulling assembly is provided with a clamping lower slope, the slide self-locking structure comprises a self-locking base, the upperportion of the self-locking base is provided with an elastic ejecting block capable of sliding up and down on the self-locking base, and the upper surface of the elastic ejecting block is provided with a clamping upper slope capable of ejecting the core pulling assembly so as to enable the core pulling assembly not to retreat. The mechanism is provided with the slide self-locking structure, duringinjection molding, the elastic ejecting block ejects the core pulling assembly, the core pulling assembly cannot retreat, the core pulling retreating can be effectively avoided, motion is stable, core pulling is reliable, a product is completely demolded and is not damaged, the structure is simple, assembling is convenient, and cost is low.

Description

【Technical field】 [0001] The invention relates to a core-pulling mechanism of a mold with a row-position self-locking structure, and more specifically relates to a core-pulling mechanism of an injection mold with a row-position self-locking structure. 【Background technique】 [0002] There are more and more plastic products in daily life, with the rapid development of the plastic industry and the continuous improvement of the strength and quality of general and engineering plastics. Plastic products are processed through injection molds. Generally, plastic molds are composed of a moving mold and a fixed mold. The moving mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form the gating system and the cavity. When the mold is opened, the movable mold and the fixed mold are separated to take ...

AI Technical Summary

Problems solved by technology

[0003] In the process of mold design and manufacturing, with the continuous development of die-casting technology, and in order to meet the needs of various products, die-casting parts gradually become more and more complex from simple parts, especially for parts with core pulling, short strokes and large projected areas. At the same time, the required core-pulling force is small and the required expansion force is large. At the same time, the core-pulling force and expansion force must be satisfied to ensure that the core-pulling will not abdicate during the die-casting process. Problems such as system oil pressure and oil cylinder seal often lead to core-pulling abdication. Once core-pulling abdicates, it will lead to changes in the size of the produced product, mold flashing, etc., and the mold cannot be produced normally, resulting in more defective products.

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