Horizontal pipe bending and punching machine anti-dimple punch structure

By introducing a floating and punch mechanism into a horizontal pipe bending and punching machine, combined with hammering and pretreatment, the punch achieves adaptive pipe bending curvature fitting and real-time shaping, solving the problems of concavity and deformation in thin-walled pipe bending, improving punching accuracy and stability, and extending punch life.

CN122322334APending Publication Date: 2026-07-03FUJIAN GUANDAXING HARDWARE PRODUCTS CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN GUANDAXING HARDWARE PRODUCTS CO LTD
Filing Date
2026-06-03
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The punch structure of existing horizontal pipe bending and punching machines is prone to causing thin-walled pipes to dent and collapse during the punching process, and it is difficult to guarantee high precision and stability. The punch cannot adapt to the deviation of the pipe curvature and wall thickness, resulting in rapid die wear and poor punching quality and forming accuracy.

Method used

By employing a floating mechanism and a punch mechanism, the punch is driven to adaptively bend the tube curvature by a connecting plate. The punch body posture is dynamically fine-tuned. Combined with the intermittent striking mechanism and the liquid nitrogen spraying mechanism of the pretreatment mechanism, adaptive fitting and real-time shaping are achieved in the punching process, reducing material plasticity.

Benefits of technology

It effectively avoids one-sided hard contact and off-center wear during punching, eliminates burrs and springback, improves punching accuracy and stability, extends punch service life, and enhances the processing quality of thin-walled bent pipes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122322334A_ABST
    Figure CN122322334A_ABST
Patent Text Reader

Abstract

This invention discloses an anti-dent punch structure for a horizontal pipe bending and punching machine, relating to the field of punch structure technology. It includes a mounting platform, a controller, a pipe bending machine, a first mounting bracket, a cylinder, a floating mechanism, a pretreatment mechanism, and a mating block. The controller is fixedly connected to the front left side of the top of the mounting platform. A floating mechanism is set up, which drives the punch mechanism to adaptively deflect the pipe bending arc via a connecting plate, ensuring uniform contact between the punch mechanism and the pipe surface and avoiding one-sided hard contact. The punch mechanism dynamically fine-tunes the punch body's posture to ensure vertical stability of the punch body acting on the pipe, avoiding eccentric wear and overpressure damage to the pipe and preventing dents. A striking mechanism is set up to intermittently strike the punch body, achieving real-time shaping during the punching process and eliminating burrs and springback. A pretreatment mechanism is set up to spray a small amount of liquid nitrogen onto the outer wall of the pipe, causing rapid low-temperature embrittlement of the area to be punched, reducing material plasticity and preparing for subsequent punching.
Need to check novelty before this filing date? Find Prior Art