Pipe fitting forming system based on coreless extrusion principle

Abstract

A tubular part shaping system based on non-core pressing principle is composed of the hydraulic controller for driving primary cylinder and ejecting cylinder, the hydraulic controller for filling oil or water, the hydraulic controller for controlling the speed of pressing cylinder, and the hydraulic controller for synchronizing the pressing cylinders at both sides. Its shaping process includes putting raw material for thin-wall pipe on lower die, pressing by primary cylinder, centerizing and sealing by pressing cylinder, filling oil or water, non-core pressing, discharging oil or water, demoulding, and ejecting workpiece out. Its advantages are uniform deformation and high quality.

Description

technical field [0001] The invention relates to a non-cutting forming system using fluid pressure, in particular to a pipe fitting forming system based on the principle of coreless extrusion. Background technique [0002] Thin-walled pipe fittings are widely used in refrigeration / heating equipment such as compressors and air conditioners, and are one of the leading products in the thin-walled pipe and pipe fittings manufacturing industry. However, the traditional manufacturing process of thin-walled pipe fittings is as follows: cut a certain length of thin-walled pipe, fill the inside of the pipe with lead, and then place it on an extruder to extrude both sides of the thin-walled pipe. The extrusion machine used is made by adding two left and right extrusion cylinders on the basis of ordinary presses, and the inner hole of the mold is completely consistent with the formed pipe fittings. Since the solid lead has no compressibility, it can only be ...

AI Technical Summary

Problems solved by technology

Due to the complex lead melting and cleaning work after the pipe fittings are formed, the work efficiency is low, the working environment is harsh, and it is easy to cause pollution to the surrounding environment, which has become increasingly unable to meet the needs of the market.

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