A kind of pipe fitting expanding and shrinking mouth processing mold

Abstract

The invention relates to an expanding and necking processing mould for pipe fittings. The expanding and necking processing mould comprises a material taking mechanism, a necking mould, an expanding mould cover plate, an expanding mould, a drawbar, a mould base and an expanding core base, wherein the material taking mechanism comprises a material taking lifting base, an air cylinder, a first expanding core and a first inner expanding mould; an inner expanding mould cover plate and an inner expanding mould bottom plate are arranged outside the first inner expanding mould; a tapered sleeve and the necking mould cover plate are arranged outside the necking mould; a pipe fitting outer protective plate is arranged in the necking mould; a second expanding core is arranged in the second inner expanding mould; a plurality of expanding mould springs and plugs are sequentially arranged between the expanding mould and a retainer ring; a third expanding core is arranged in the expanding mould; an inner expanding mould spring is arranged outside the drawbar; and each of the first inner expanding mould, the necking mould, the second inner expanding mould and the expanding mould consists of a plurality of mould pieces. The expanding and necking processing mould can automatically take materials for carrying out processing of simultaneously expanding one end of each pipe fitting and necking the other end of each pipe fitting, so that outlines of barrel parts of the pipe fittings are prevented from being affected by end part processing, and therefore, processing efficiency and product quality are improved.

Description

technical field [0001] The invention relates to a mold for processing expansion and contraction openings of pipe fittings, which belongs to the technical field of auto parts processing. Background technique [0002] With the rapid development of my country's automobile industry and engineering construction technology, the market has higher and higher requirements for the quality of pipe fittings, thus promoting the rapid development of pipe fittings processing molds. There are two types of dies for processing the ends of pipe fittings: expanding dies and shrinking dies, which can respectively perform flaring and shrinking processing on the ends of pipe fittings. During processing, it is often necessary to process twice through the expanding die and the shrinking die, and repeated clamping, which is inefficient and affects product accuracy. Contents of the invention [0003] The purpose of the present invention is to address the defects of the prior art, to provide a proce...

AI Technical Summary

Problems solved by technology

There are two types of dies for processing the ends of pipe fittings: expanding dies and shrinking dies, which can respectively perform flaring and shrinking processing on the ends of pipe fittings. During processing, it is often necessary to process twice through the expanding die and shrinking die, repeated clamping, low efficiency and affecting product accuracy

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