Injection mold of large-angle arc circular pipe

Abstract

The invention provides an injection mold of a large-angle arc circular pipe. The injection mold comprises an upper mold seat plate, a molding cavity fixing plate, a molding core fixing plate, a mold leg cushion block, a thimble cover plate, a thimble push plate, a lower mold seat plate, a molding core insert, a molding cavity insert, an elbow core-pulling oil cylinder, an oil cylinder pull strip, a first connection pin, a central small pull block, a second connection pin, an arc sliding block, an arc guide block, an elbow molding core, a straight pipe molding core, a sliding block body, an inclined guide column and a sliding block reinforcement bracket. According to the injection mold adopting above technical solution, the defects that a product cannot be fully injected and is under-injected during injection molding in the prior art in a two-section elbow product molding injection molding technology are overcome, and the actual production problems that the pressure on a mold cavity is hard to balance, multiple flanges are formed, injection is not full, more flanges are formed, the uniformity of the wall thickness is hard to guarantee, the efficiency is low and the like are solved; zero-defect automatic molding production of the product is realized by a simple mechanism, so that the forming quality of the product is effectively guaranteed; the injection mold is reasonable in structural design, compact in structure and stable in work.

Description

technical field [0001] The invention relates to the field of injection mold mechanism design, in particular to a large-angle circular arc tube injection mold. Background technique [0002] Such as figure 1 As shown, when the curved straight pipe is injection molded, there is a straight section at one end of the product, a curved section at the other end, and side holes are provided on the side, which makes mold design and processing difficult. The actual production of the mold designed and manufactured by the existing technology In this case, it is difficult to guarantee the molding quality of the product such as no flash and full filling. It is necessary to design a reasonable gate position and pouring method, and at the same time be equipped with a scientific mold structure to ensure the defect-free injection molding production and automatic injection molding production operation of the product. Contents of the invention [0003] The technical problem to be solved b...

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Problems solved by technology

[0002] like figure 1 As shown, when the curved straight tube is injection molded, there is a straight section at one end of the product, a curved section at the other end, and side holes are provided on the side, which makes mold design and processing difficult. In this case, it is difficult to guarantee the molding quality of the product such as no flash and full filling. It is necessary to design a reasonable gate position and pouring method, and at the same time be equipped with a scientific mold structure to ensure the defect-free injection molding production and automatic injection molding production operation of the product.

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