Variable-diameter spinning machine for ultra-long metal pipe material

Abstract

The invention discloses a variable-diameter spinning machine for an ultra-long metal pipe material. The variable-diameter spinning machine for the ultra-long metal pipe material comprises a base, a tail ejector assembly arranged at the tail end of the base, a spindle box arranged at the first end of the base and coaxial to the tail ejector assembly, and a spinning roller assembly, a horizontal feeding assembly and a longitudinal feeding assembly arranged on the base and located between the tail ejector assembly and the spindle box, wherein the tail ejector assembly comprises multiple support seats arranged at the tail end of the base at intervals; three freely rotatable rollers coaxial to the pipe material are arranged on the support seats; two rollers are horizontally arranged at an interval so as to form a clamping slot for supporting the pipe material; and the other one roller is arranged on a rotary arm, and can rotate in a longitudinal plane so as to drive the roller arranged on the rotary arm to press against the upper side of the circumferential surface of the pipe material. According to the spinning machine, a tail ejector and other two rollers form limitation on the pipe material through rotating the roller on the rotary arm to press against the upper side of the circumferential surface of the pipe material, so that the problems of large radial run-out and low qualitywhen the ultra-long metal pipe material is spun and formed can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of spinning equipment, in particular to a variable-diameter spinning machine for ultra-long metal pipes. Background technique [0002] Metal reducing pipes are usually used in equipment connection, fluid transmission, decorative building materials and other fields. Traditionally, metal reducing pipes are usually manufactured by welding, forging and other processing methods, especially in the manufacture of ultra-long pipes with a length between 1 meter and 10 meters. For metal pipes, the labor cost is high and the forging process leads to material waste, low processing efficiency and processing accuracy. Spinning is an advanced process that combines the characteristics of forging, extrusion, stretching, bending, ring rolling and rolling without cutting. As a branch of plastic forming, it has good metal deformation conditions and high material utilization rate. High, flexible and low cost characteristics. I...

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Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to provide an ultra-long metal pipe variable diameter spinning machine, which can effectively solve the problem of large radial runout and quality problems of ultra-long metal pipes during spinning forming. low problem

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