A pipe pulling machine for centrifugal casting equipment of ductile iron pipes

Abstract

The invention relates to a drawbench for a nodular cast iron pipe centrifugal casting device. The drawbench comprises a rack, a pipe drawing device, a winch driving device and a chuck stretching device, wherein the rack is provided with a guide rail; the pipe drawing device and the winch driving device are installed on the rack; the chuck stretching device is connected with the pipe drawing device; the chuck stretching device is used for fixing a nodular cast iron pipe; the pipe drawing device is used for drawing the nodular cast iron pipe; the winch driving device is used for controlling the running of the pipe drawing device. The drawbench is reasonable in structure design, can effectively draw the nodular cast iron pipe, guarantees that a cast iron mold, the nodular cast iron pipe and the pipe drawing device are in linear drawing running during pipe drawing, prevents the cast iron mold from being damaged due to the twisting of the nodular cast iron pipe during the drawing, can rapidly and effectively start up and stop the nodular cast iron pipe centrifugal pipe drawing machine, and can improve the working efficiency; the chuck stretching device has a good stretching effect in the nodular cast iron pipe, and is not prone to separate and abrade.

Description

technical field [0001] The invention relates to a pipe pulling machine used for centrifugal pouring equipment of ductile iron pipes, and belongs to the technical field of machinery industry. Background technique [0002] Ductile iron pipes are used in underground water pipes. During production, they are centrifugally poured with rotating molds, and the formed pipes must be pulled out of the molds. [0003] Extubation machines in the prior art are driven by a frequency converter and a motor, and the clamps are opened and reset by a mechanical structure. The disadvantages are: during the drawing process driven by the frequency converter and the motor, due to the large and heavy ductile iron pipe workpiece, it cannot be started and stopped quickly, which affects the work efficiency; the mechanical structure of the fixture is in use, due to the large force of the fixture. Parts are worn out. The ductile iron pipe is prone to twist during drawing, which makes the drawing proces...

AI Technical Summary

Problems solved by technology

The disadvantages are: during the drawing process driven by the frequency converter and the motor, due to the large and heavy ductile iron pipe workpiece, it cannot be started and stopped quickly, which affects the work efficiency; the mechanical structure of the fixture is in use, due to the large force of the fixture. Large loss of parts

However, the loss is large during work, and the accuracy of drawing is not high

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