Injection mold for pipe joints

Abstract

The present invention provides a pipe joint injection mold, which comprises an upper die, a lower die and a mandrel assembly. A cavity matched with the shape of the joint is formed between the upper die and the lower die; the mandrel assembly includes a first mould jacket, a first lower core, a second mould jacket, a second lower core and a bending mandrel; the first mould jacket, the first lower core, the second lower core, and bending mandrel are spliced into a shape matched with an inner hole of the pipe joint; the bending mandrel has a arc structure; and the bending mandrel passes through a mouthing of a pipe joint formed by the second mould jacket along the virtual extension of an arc direction of the arc structure. According to the pipe joint injection mold provided by the invention, the arrangement of bending mandrel and a rotating mode mandrel removal make the injection molding production of pipe joint possible, thereby reducing pipe joint production cost, and improving production efficiency; and in addition, the seal performance of the pipe joint is improved by using the injection mold.

Description

technical field [0001] The invention relates to the technical field of molds for connecting pipe fittings, in particular to an injection mold for pipe joints. Background technique [0002] With the improvement of people's living standards, the level of housing technology is also constantly humanized. In order to save land, there are more and more high-rise buildings, especially the use of plastic pipes in toilets will generate noise. The traditional traditional 45° oblique straight connecting pipe is two main parts. During the injection molding process, the mold uses two molds to divide the connecting pipe into two parts for injection molding. On the one hand, because the connecting pipe needs to be matched and connected, the precision of the two parts pipe mold The requirements are relatively high, and the split injection molding increases the production cost. On the other hand, the two ends of the split oblique straight pipe are connected by bonding. Manual bonding will ca...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to overcome the high production cost of split 45° oblique straight connecting pipes in the prior art and the hidden danger of leakage in manual bonding, the present invention provides an injection mold for pipe joints, which adopts injection molding One-piece molding, the original split-bonded oblique straight pipe is improved into an oblique curved pipe with a micro-arc structure, so as to save costs and avoid leakage

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