Tube bending forming processing device

Abstract

The present invention discloses a bending forming processing equipment for pipe material. Said equipment includes the following several portions: bending die clamping die, pressing die, pressurizing plate, circumferential pressure-applying hydraulic cylinder, axial propulsion hydraulic cylinder and bending machine working table. The circumferential pressure-applying hydraulic cylinder pushing rod is rigidly connected with the pressurizing plate, the axial propulsion hydraulic cylinder pushing rod is flexibly connected with the pressing die end portion. The circumferential pressure-applying hydrautic cylinder can be used for driving said pressurizing plate to circumferentially apply pressure to the pipe material, and the axial propulsion hydraulic cylinder can be used for driving pressing die to apply tangential force to the pipe material, the bending die is fixed on the bending machine working table by means of bending centre, and bending die, pressing die and clamping die respectively have the groove fit with the outer diameter of said pipe material, the pressurizing plate is connected with the pressing die by means of dovelail groove, and the pressurizing plate also is connected with the bending machine working table by means of dovetail groove.

Description

technical field [0001] The invention relates to a plastic processing device, in particular to a pipe bending and forming processing device, which belongs to the technical field of material processing. Background technique [0002] Bending parts made of pipes are widely used, and the bending processing of thin-walled pipes plays an important role in boilers, petrochemicals, aerospace and other fields. Bending forming has become an important pipe bending forming process due to its high production efficiency and high precision. Due to the particularity of thin-walled pipes in terms of materials and applications, phenomena such as pipe wall thinning and section distortion occur during the bending process, which affect the application of thin-walled pipes. Taking the HVAC pipe as an example, due to the high pressure inside the pipe, excessive pipe wall thinning seriously affects the strength and service life of the elbow, and the cross-sectional distortion increases the flow res...

AI Technical Summary

Problems solved by technology

Its disadvantages: First, because in the bending deformation zone, the length of the outer side of the tube relative to the neutral axis of the tube becomes longer, so the outer side of the tube is stretched to make the tube wall thinner. When the performance of the tube material is poor, it is easy to crack. And excessive pipe wall thinning will cause cracks on the outer wall of the pipe with high working internal pressure, which will cause leakage

Its disadvantages are: 1. Different material pipes, even if the section size is the same, the deformation process and degree are different, so the mold section needs to be redesigned; 2. The reverse deformation design requires a lot of experiments to modify the mold, which greatly increases the cost of mold design and new The production cycle of the product; three, it cannot alleviate the thinning of the pipe wall

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