Top pier holding device for numerical-controlled pipe bending machine

Abstract

The invention discloses a top pier holding device for a numerical-controlled pipe bending machine. The top pier holding device comprises a support frame and a convolution type clamping structure, wherein the support frame is at least provided with two openings, and the two openings are adjacent; the convolution type clamping structure is rotatably connected to an inner cavity of the support frameand comprises a pushing collet, a fixed clamping block, a fixed shaft and a pushing component, wherein a first semicircle groove is formed in the fixed clamping block; a shaft fixing block is fixedlyconnected to the inner wall of the support frame, and the shaft fixing block is symmetrically arranged on two sides of the inner part of the support frame; the end of the fixed shaft is fixed to the shaft fixing block; and the pushing collet sleeves the fixed shaft, and besides, the pushing collet performs circumferential rotation around the fixed shaft. According to the top pier holding device disclosed by the invention, the whole equipment is simple in structure, large in clasping force and small in occupied area; after pipe bending is completed, all structural members of the top pier holding device are lower than the lower surface of a pipe; and according to the size of the pipe bending radius, the whole equipment can adjust the axial position of the pushing collet.

Description

technical field [0001] The invention relates to the technical field of pier clamping, in particular to a pier clamping device of a numerically controlled pipe bender. Background technique [0002] The application of CNC pipe bending machine is the bending processing equipment of aerospace, automobile, locomotive, motorcycle, ship, petrochemical, electric power, natural gas, nuclear industry, boiler, vehicle, fitness equipment, air conditioning refrigeration, sporting goods and other pipe fittings. machine market occupies a dominant product position. CNC pipe bending machine can perform winding bending of pipes with one bending radius (single layer) or two bending radii (double layer) in cold state, widely used in bending various pipe fittings and wires in industries such as automobiles and air conditioners . The pipe bending machine is mainly used for plastic forming of pipes. [0003] However, there are certain problems in the current CNC pipe bending machine. First, whe...

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Problems solved by technology

[0003] However, there are certain problems in the current CNC pipe bending machine. First, when the pipe is bent, the wall thickness at the elbow of the pipe will become thinner, which will easily cause the pipe after bending to be a substandard product, and the elbow needs to be reduced wall thickness reduction

Second, when the existing pipe bending machine completes the pipe bending action, it is necessary to manually remove the pipe or perform the next operation, which makes the work efficiency low

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