Inclined top internal double-bouncing-needle reverse buckle removing structure

Abstract

The invention discloses a pitched roof internal double-elastic-needle reverse buckle removing structure 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, an edge forming face is formed between the upper end of the push block and the pitched roof head, 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 head of the second elastic needle is located in the edge forming face. The double-bouncing-needle structure is arranged in a series connection mode, the counterpoint synergistic effect can be achieved, the segmented secondary ejection effect is formed, and the higher demolding and reverse buckle removing functions are achieved; the elastically-arranged adjusting ring is matched with the adjusting groove to offset the initial elastic force generated when the first elastic needle is reset and popped out, the situation that the popping speed of the first elastic needle is too high is prevented, and the demolding quality is improved.

Description

technical field [0001] The present application relates to the technical field of a slanted top spring mechanism, and in particular to an internal double spring pin release and undercut structure of a slanted top. 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...

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 spring pins can ensure the limit, but the combination of multiple spring pins at different angles will cause positional interference between the spring pins, which cannot be retracted at the same time, and it is inconvenient to take off the buckle; It will cause poor elasticity to limit the product. Therefore, when the long arc surface structure is combined with the inclined roof, there is a problem that the processing quality and the ejection efficiency cannot be balanced.

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