Supporting device of internal expansion core rod for bent pipe and bent pipe machining system

Abstract

The invention provides a supporting device for an internal expansion core rod for a bent pipe. The supporting device is characterized by comprising a lifting support and a driving unit for driving the lifting support to move, the driving unit can at least adjust the position along the axial direction and the vertical direction of the matching position of a pipe and the internal expansion core rod, and the lifting support can support the internal expansion core rod from the lower part. The invention further provides a bent pipe machining system comprising the supporting device. The supporting device of the internal expansion core rod for the steel bent pipe and the bent pipe machining system have the advantages that the internal expansion core rod is straightened through the lifting support, automatic assembly of the pipe is facilitated, and therefore the internal expansion core rod and the pipe can be continuously driven to move relatively to a designated position, dependence on manual straightening can be avoided, the working efficiency and safety are improved, the labor cost is reduced, moreover, the equipment transformation cost is low, only one supporting device needs to be additionally arranged in an existing pipe bending machine, the internal expansion core rod does not need to be replaced, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of pipe bending, in particular to a support device for an inner expansion mandrel for pipe bending and a pipe bending processing system. Background technique [0002] Generally, when the hollow pipe is bent, the bending position will be deformed. At present, the cross-sectional collapse and distortion of the bent pipe are mainly limited by the inner expanding mandrel or the outer clamping structure. Among them, the inner expansion mandrel is connected by multiple universal joints, so as to have a large enough degree of bending freedom to meet the use requirements of the bent pipe. When bending the pipe, the pipe needs to be inserted outside the inner expansion mandrel first. However, The inner expansion mandrel is bent in a natural state, and it is necessary to manually align the pipe with the inner expansion mandrel before continuing to insert it into the bending position, resulting in the inability to achi...

AI Technical Summary

Problems solved by technology

Among them, the inner expansion mandrel is connected by multiple universal joints, so as to have a large enough degree of bending freedom to meet the use requirements of the bent pipe. When bending the pipe, the pipe needs to be inserted outside the inner expansion mandrel first. However, The inner expansion mandrel is bent in a natural state, and it is necessary to manually align the pipe with the inner expansion mandrel before continuing to insert it into the bending position, resulting in the inability to achieve complete unmanned operation of the pipe bending operation, low work efficiency, and the operation inconvenient

[0003] The utility model patent with the publication number CN202715681U discloses a digitally controlled bending forming device for an inner support auxiliary catheter, which supports and straightens the inner expansion mandrel by compressing the spring to support the annular spherical body and the ball head connecting rod. This method needs to be replaced with a new one. Inner-expanding mandrels, and in the factory production, there are many inner-expanding mandrels for pipes of different specifications. It will cost a lot to replace them all, and this method cannot completely prevent the bending of the mandrels. Manual assistance is required, and as the spring ages, the use effect is not much different from the previous mandrel structure, and it cannot solve the problem of low work efficiency.

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