Secondary bending mechanism for pipe fitting

Abstract

The invention discloses a secondary bending mechanism for a pipe fitting. The mechanism comprises a working table, wherein a pipe fitting supporting base, a primary bending supporting base and a secondary bending supporting base are sequentially arranged on the working table, a clamping press block, a primary bending pressing block and a secondary bending press block driven by a first driving part, a second driving part and a third driving part respectively to move up and down are arranged on the pipe fitting supporting base, the primary bending supporting base and the secondary bending supporting base respectively, the upper portion of the primary bending press block is hinged to the second driving part through a pin shaft, a pin shaft downward movement limiting surface is arranged on the lower side of the pin shaft, the second driving part drives the primary bending press block to move downwards to a pin shaft touch limiting surface to conduct primary pre-bending on the pipe fitting, the third driving part drives the secondary bending press block to move downwards, the secondary bending press block drives the primary bending press block to rotate around the pin shaft to achieve primary bending of the pipe fitting firstly, and then the secondary bending press block disengages from the primary bending press block to continue to move downwards to achieve secondary bending of the pipe fitting. The mechanism is high in machining efficiency, low in rejection rate and high in stability of machined product quality.

Description

Technical field [0001] The invention relates to pipe bending equipment, in particular to a second bending mechanism for pipe fittings. Background technique [0002] figure 1 Shown is a passenger car seat back frame 10a, the bending parts 101a and 102a are made of figure 2 The arm of the U-shaped pipe fitting 1a is formed by bending twice. The existing processing method requires at least two processing on a pipe bending machine, which has low production efficiency and poor specifications after processing, which is easy to compress the pipe wall. Flat, unstable bending shape. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a secondary bending mechanism for pipe fittings, which has high processing efficiency, low rejection rate, good shape specification after bending, and high quality stability. [0004] In order to achieve the above objective, the technical solution of the present invention is: a second bending mechanism fo...

AI Technical Summary

Problems solved by technology

[0002] figure 1 Shown is a passenger car seat back frame 10a, the bent portions 101a and 102a of which are made of figure 2 The arm of the U-shaped pipe fitting 1a is bent twice. The existing processing method requires at least two processings on the pipe bending machine, the production efficiency is low, and the specification of the processed product is poor, and it is easy to press the pipe wall. Flat, unstable when bent

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