Double-vibrating-needle pitched roof control mechanism

Abstract

The invention discloses a double-elastic-needle pitched roof control mechanism which comprises a pitched roof head, a mold cavity is formed in the upper end of the pitched roof head, a push block is arranged in the mold cavity, a first elastic needle is arranged in the pitched roof head, and a second elastic needle abutting against the head of the first elastic needle is arranged in the push block. The ejection mechanism has the advantages that the inclined ejector is ejected out and retreats, the ejection position of the push block is fixed, when the inclined ejector is ejected out, the first elastic needle moves downwards, the second elastic needle retreats after the first elastic needle moves, reverse buckle retreating is achieved, then the inclined ejector can continue to be ejected out, the double-elastic-needle structure is arranged in a series connection mode, the counterpoint synergistic effect can be achieved, and the segmented secondary ejection effect is achieved; and the mold has higher demolding and reverse buckle withdrawing functions.

Description

technical field [0001] The present application relates to the technical field of a slanted ejector mechanism, in particular to a control mechanism for a slanted ejector with double ejectors. Background technique [0002] Injection molding is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain complex-shaped parts. The injection molding machine injects into the mold cavity under high pressure, and after cooling and solidifying, the molded product is obtained. Existing injection molds generally use an inclined ejector mechanism to eject products when they are injecting products with undercuts. However, when some injection molded parts with undercuts are demolded, the undercuts may stick to the inclined roof. As the demoulding progresses, the inclined roof will retreat, and the undercuts will be deformed. In severe cases, the...

AI Technical Summary

Problems solved by technology

Its disadvantages are: for long arc-shaped injection molding products, when the inclined top is ejected, it is pushed on one side, and a slider is set inside the inclined top. The arc surface structure of the injection molded product between the slider and the inclined top needs Only multiple pins can ensure the limit, but the combined use of multiple pins at different angles will cause positional interference between the pins, and they cannot be retracted at the same time; and the use of multiple pins at the same angle will cause elasticity to the product. The limit ability of the structure is poor, so the processing quality and ejection efficiency cannot be taken into account when the elongated arc surface structure is manufactured with the inclined roof.

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