A calibrated connection device for connecting a pipe to a flange
By combining modular three-template coplanar positioning, lifting fine adjustment, electromagnetic adsorption and chuck-drive disc hydraulic linkage, the problems of local flange deformation and poor positioning accuracy in bent pipe flange welding are solved, realizing efficient and reliable flange connection, which is suitable for high-precision batch operations in petrochemical, water conservancy projects and urban water supply and drainage fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEBEI YANHAI PIPE EQUIP MFG CO LTD
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for welding bent flanges have several drawbacks, including localized deformation of the flange or damage to the sealing surface due to clamping, poor repeatability, reliance on operator skills, difficulty in precisely controlling clamping force, slow assembly speed, and difficulty in ensuring concentricity and hole position consistency in high-precision batch operations.
The modular three-template coplanar positioning, lifting fine adjustment, electromagnetic adsorption and positioning head, and chuck-drive disc hydraulic linkage combination scheme are adopted to realize the rapid positioning and angle calibration of the flange. Through multi-point synchronous adjustment and mechanical positive constraint, damage caused by single-point strong clamping is avoided, and the repeatability and assembly efficiency are improved.
It significantly reduces the risk of local flange deformation, improves repeatability and positioning accuracy, shortens assembly cycle, is suitable for integration into semi-automatic or fully automatic production lines, and maintains concentricity and hole position consistency in high-precision mass production.
Smart Images

Figure CN122400964A_ABST