A high-precision cold-drawn seamless steel pipe bending device

Abstract

The invention relates to the technical field of steel pipe bending, and discloses a high-precision cold-drawn seamless steel pipe bending device, which includes a frame, a pipe bending die, a pipe push plug and a hydraulic mechanism, and the middle part of the pipe bending die is movably connected with a For the first contact, a movable slot is provided inside the pipe bending die at the bottom end of the first contact, and a second contact is fixedly connected to the right end of the movable slot. In the present invention, by designing the first and second contacts and the electromagnetic layer, and by designing the push tube plug and the stop tube plug, the push tube plug and clamped slider drive the steel pipe to move during the bending process so that the ventilation tube on the stop tube plug enters Inside the air cavity, at the same time, due to the proximity of the strong magnetic layer, the magnetic piston squeezes the compressed gas inside the gas storage tank into the inside of the air cavity, so that the soft rubber rod expands to support the inner wall of the steel pipe, avoiding the bending process. The collapse and inner wrinkling of the inner wall of the steel pipe are caused by the difference in force between the inner wall and the outer wall of the bend.

Description

technical field [0001] The invention relates to the technical field of steel pipe bending, in particular to a high-precision cold-drawn seamless steel pipe bending device. Background technique [0002] High-precision cold-drawn seamless steel pipe is a precision seamless steel pipe with high dimensional accuracy and good surface finish for mechanical structures and hydraulic equipment. It can save processing hours, improve material utilization, and help improve product quality. Through cold The steel pipe produced by the drawing technology has the advantages of being able to withstand greater pressure, high precision of the finished product and good surface quality. [0003] However, in the use of these high-precision cold-drawn seamless steel pipes, not only straight pipes are often required, but also a large number of high-precision seamless bends are required in some applications. It is indispensable in the process of pipe bending, but when the existing pipe bending equi...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing pipe bending device proposed in the background technology, the present invention provides a high-precision cold-drawn seamless steel pipe bending device, which can prevent the inner wall of the steel pipe from collapsing and internal wrinkling during pipe bending. The advantage of being easy to fix the steel pipe when bending the pipe, solves the technical problems raised in the above background technology

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