Steel pipe tapering machine

Abstract

The invention discloses a steel pipe tapering machine, which comprises a machine base, a shell on the machine base, and a main shaft driven by a motor, wherein a die and a hammer are arranged in a die cavity of the main shaft; a rolling shaft group is arranged between the hammer and the shell; the hammer comprises a plurality of hammer blocks; the die is formed by splicing at least three die blocks; the spliced part of each die bock is triangular, a partial conical groove is formed on one side of the top of each spliced part, clearance is reserved between two side walls of the spliced parts of the two adjacent die blocks, the clearances are closed in the spliced center of a plurality of die blocks, and the partial conical grooves in a plurality of die blocks are spliced into a complete conical hole; and a plurality of die blocks are in one-to-one correspondence to a plurality of hammer blocks, the outer wall of each die block is propped against the inner wall of each hammer block, and the die blocks and the hammer blocks slide in the die cavity of the main shaft in the radial direction. According to the technical scheme, the tapering machine solves the problem that a solid tapered point cannot be formed in the large-diameter steel pipe during tapering in the prior art.

Description

technical field [0001] The invention relates to a steel pipe conical pipe machine. Background technique [0002] The patent document with the publication number CN2663045Y discloses a steel pipe tapered pipe machine, which includes a machine base, a housing on the machine base, a main shaft driven by a motor through a belt pulley, a mold and a hammer head are installed in the mold cavity of the main shaft, and on the outer wall of the main shaft, A combined roller set is arranged between the outer wall of the hammer head and the shell. However, the mold therein is composed of upper and lower two-petal mold blocks. Because the two-petal mold blocks are in surface contact, and part of the conical grooves are formed on the joint surface, the existing technology cannot guarantee the full fit of the joint surface, so the two Part of the conical surface groove on the die block cannot be closed into a complete conical tip, and the active force cannot be applied to the tube tip, so...

AI Technical Summary

Problems solved by technology

However, the mold is composed of upper and lower mold blocks, because the two mold blocks are in surface contact, and some conical grooves are formed on the joint surface. The existing technology cannot guarantee the full fit of the joint surface, so the two Part of the conical groove on the die block cannot be closed into a complete conical tip, and the force cannot be applied to the tube tip, so that the steel pipe can only be processed into a conical tube, and a solid conical tip cannot be formed at the end of the tube

Images