Tee extrusion method

Abstract

The invention discloses a tee extrusion method. The tee extrusion method includes: clamping a tee workpiece in a main tube cavity enclosed by an upper die and a lower die, and using a support cylinder to push a support bar inside a tee branch-tube cavity into the tube wall of a branch tube open end of the tee workpiece; using a lateral cylinder to push an ejector pin into a main tube opening, and using a water injection system to inject normal pressure water into the tee workpiece through a liquid delivery tube cavity; continuing to insert the ejector pin into an inner cavity a main tube of the tee workpiece, using the water injection system to inject high pressure water into the tee workpiece before the copper tee main tube slightly deforms under water pressure, continuing using the lateral cylinder to push an ejector pin step to extrude in the tee direction so as to coordinate with the high pressure water in the tee workpiece to forcedly extend copper material of the tee main tube towards cavities of branch tubes, pulling back the support bar inside a support cavity till the branch tubes are formed; and stopping the water injection system from injecting the high pressure water, returning the ejector pin, and returning the upper tide to complete branch tube forming. By the tee extrusion method, finished tees are higher in forming quality and good in consistence, and yield of the finished tees is increased.

Description

technical field [0001] The invention relates to the field of processing metal pipe fittings, in particular to a tee extrusion forming method. Background technique [0002] A tee is a pipe connection. Also known as pipe fittings tee, tee fittings or tee joints, the tee is used at the main branch of the main pipeline. It has a wide range of uses, a wide range of industries, and a wide range of applications. Tees made of copper are common in the field of refrigeration. The traditional method of making copper tees is mainly the lead filling method. The copper pipe is cut to a certain length, and the melted lead is poured into the inner cavity of the copper pipe. After the inner cavity of the tube is solidified, remove the lead adhering to the surface of the copper tube and the lead at the nozzle of the copper tube, drill a small hole at the extruded end of the copper tube, and then use a hydraulic press to inject the lead into the tee to be processed in the mold. Apply pressur...

AI Technical Summary

Problems solved by technology

However, when water is used as the extrusion working medium, only by increasing the water pressure, the pipe wall thickness of the workpiece often appears inconsistent during extrusion, and the water pressure needs to be high, otherwise it will not be able to expand the shape and result in waste products. , the processing pass rate is not high

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