Electric heating pipe shrinking machine

Abstract

The invention discloses an electric heating pipe shrinking machine; multiple sets of pressing tools are arranged on a machine body; a working station and a main shaft fixed station are arranged at the top of the machine body; an oil receiving tank is formed in the bottom of the working station; an oil return system is arranged in the machine body, and comprises an oil return plate and an oil return barrel; an oil return tank is formed between the oil return plate and a baseplate of the working station; an oil return hole is formed in a center plate; the bottom of the oil return hole is connected with an oil return pipe; the pressing tools comprise upper and lower brackets; the bottoms are fixed at one side of the top of the machine body; upper and lower main shafts are rotationally fixed in the upper and lower brackets; upper and lower gears are outside the bottoms of the upper and lower main shafts; the bottom of the lower main shaft is connected with a coupling; the bottom of the coupling is connected with a motor; upper and lower rollers are arranged on the upper and lower main shafts; and fixed grooves are formed in the two ends of the upper and lower main shafts. The electric heating pipe shrinking machine adopts a three-point positioning method to fix the brackets, so that the brackets are stably fixed on the machine body; the oil return system in the machine body adopts an integral closed oil tank to solve an oil return sealing problem; and the lower ends of traditional main shafts are changed to double bonds so as to improve the transmission force.

Description

technical field [0001] The invention relates to an electric heating tube shrinking machine. Background technique [0002] The pipe shrinking machine adopted in the market at present, in the pipe shrinking process, due to the unreasonable positioning of the bracket, two points are used to set a plane so that the electric heating tube with a diameter of φ14 or more is easy to bend, and the bracket is unstable. In terms of oil return from the oil circuit, in the past, the method of welding steel plates was mainly used to receive oil. The degree of sealing is not good, and oil is easy to leak, resulting in waste and affecting the working environment. Moreover, because the motor and the roller main shaft use a single keyway, the cracked key phenomenon occurs during the shrinkage process of pipe diameters above φ16, and the strength is not enough. Contents of the invention [0003] The object of the present invention is to provide an electric heating tube shrinking machine in o...

AI Technical Summary

Problems solved by technology

[0002] The tube shrinking machines currently used in the market, due to the unreasonable positioning of the bracket during the tube shrinking process, use two points to set a plane so that the electric heating tube with a diameter of φ14 or more is easy to bend and the bracket is unstable.

In terms of oil return from the oil circuit, in the past, the method of welding steel plates was mainly used to receive oil. The degree of sealing is not good, and oil is easy to leak, resulting in waste and affecting the working environment.

Moreover, due to the use of a single keyway for the motor and the roller spindle, the cracking phenomenon occurs during the shrinkage process of the pipe diameter above φ16, and the strength is not enough.

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