An automatic upper die and pre-drawing equipment for pipe cold drawing machine

Abstract

An automatic upper mold and pre-drawing equipment for a pipe cold drawing machine belongs to the technical field of pipe cold drawing forming. The invention is provided with two sets of symmetrical brackets, connecting arms and hydraulic cylinders. The hydraulic chuck is fixedly connected to one end of the connecting arm, and the other end of the connecting arm is overlapped on the bracket and is also connected to the piston rod of the hydraulic cylinder; the mold The bracket is located between the cold drawing machine arch and the hydraulic chuck. Hydraulic cylinders and telescopic shock-absorbing pillars are installed vertically between the mold bracket and the ground. There are a number of removable roller seats evenly distributed on the upper end of the mold bracket. , there are several rollers in the roller seat; there is also a pulling piece for mold unloading on the side of the cold drawing machine arch of the hydraulic chuck. The invention can realize automatic loading and unloading of the mold, and replaces the original manual press process by pre-drawing the pipe, thereby achieving the purpose of penetrating the pipe into the center hole of the mold of the cold drawing machine, while improving production efficiency. It can also reduce workers’ labor intensity and work hazards.

Description

technical field [0001] The invention belongs to the technical field of pipe cold drawing, in particular to an automatic upper die and pre-drawing equipment for a pipe cold drawing machine. Background technique [0002] Pipe cold drawing forming technology is a process method for deep processing of hot-rolled pipes, extruded pipes or welded pipes. It can produce cold-drawn pipes with high precision, low roughness and high strength. The cold drawing machine is used as The main equipment for producing cold-drawn pipes. [0003] At this stage, due to the late start of pipe cold drawing forming technology in my country, the overall technology is still relatively backward, and the degree of automation is generally not high. For most cold drawing machines, the loading and unloading of molds is generally done manually. The mold efficiency is low, and the mold unloading process is also very inconvenient. In addition, during the multi-pass cold drawing process of the pipe, before eac...

AI Technical Summary

Problems solved by technology

The heating of the pipe head before the head pressing process consumes a lot of energy, and the head pressing process also needs to be completed manually. Not only is the operation dangerous, but also the labor intensity is high, and the overall production efficiency is low.

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