Machine for shrinking one of the parts of tube

Abstract

The invention relates to a pipe-reducing machine which comprises a stander, a clamping device, a processing device which is arranged on the stander positioned at the rear part of the clamping device in a sliding way, an ejection device which is fixedly arranged on the stander; the processing device is provided with a through hole which is internally fixedly inserted with a cross-core bar; a crack which is used for the insertion of pipe fittings to be processed is left between the hole wall of the through hole and the cross-core bar; the through hole is provided with at least one section of a thin neck part which gradually becomes thin. After the clamping device fixes the pipe fittings, the processing device moves forward to ensure that the rear end of the pipe fittings is inserted to the crack between the cross-core bar and the through hole; when the pipe fittings pass through the thin neck part, the pipe fittings are squeezed and retracts inwardly, thus avoiding the distortion and deformation of the pipe fittings, better maintaining the strengthen of the pipe fittings; Meanwhile, the mode of direct pressing deformation is adopted for pipe reduction to ensure that the pipe-reducing machine can be generally applied to the processing of a variety of special pieces with irregular shapes.

Description

technical field [0001] The invention relates to a pipe shrinking machine, which belongs to the field of pipe fitting processing equipment. Background technique [0002] The tube shrinking machine in the prior art usually includes a feeding mechanism, a die set fixedly connected to the rotor part of the motor, and an extrusion die is rotatably fixed on the die set, and the upper part of the extrusion die A machining hole is opened, and the machining hole has a section of narrow neck. When the tube shrinking machine is working, the feeding mechanism pushes the workpiece forward and inserts it into the processing hole, the extrusion die rotates and squeezes the thin neck on the outer surface of the tube wall to make it shrink inward; There is a large friction force between the die and the pipe wall, which makes the pipe fittings unable to bear the pressure and twists and deforms, or causes the reduced strength of the pipe fittings to be poor; and the pipe shrinking machine can...

AI Technical Summary

Problems solved by technology

When the tube shrinking machine is working, the feeding mechanism pushes the workpiece forward and inserts it into the processing hole, the extrusion die rotates and squeezes the thin neck on the outer surface of the tube wall to make it shrink inward; There is a large friction force between the die and the pipe wall, which makes the pipe fittings unable to bear the pressure and twists and deforms, or causes the reduced strength of the pipe fittings to be poor; and the pipe shrinking machine can only process rotary pipe fittings, and cannot adjust the longitudinal section. Irregular shaped special-shaped pipe fittings for shrinking

Images