Pipeline opening expanding device
By using the through-hole and enlargement design of the clamping plate, as well as the detachable ruler plate and positioning components, combined with the motor-driven telescopic universal joint and stop, the problem of inconsistent copper tube expansion depth is solved, achieving consistent copper tube expansion dimensions and automated production, thus improving production efficiency and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-10
AI Technical Summary
Existing manual expansion machines result in inconsistent expansion depths of copper tubes, leading to inconsistencies in the shape and size of the sealing surface at the expansion joint, which affects the stability of the interface performance.
It adopts a clamping plate through-hole and enlarged hole design, combined with a detachable ruler plate and positioning components. The automatic positioning and radial expansion of the clamping plate are achieved by a motor-driven telescopic universal joint and stop block. It provides multiple levels of flaring depth selection and supports automatic and manual control modes.
To ensure consistent copper tube expansion joint dimensions, improve production efficiency, achieve automated production and simplify operations, and adapt to different working conditions.
Smart Images

Figure CN223981074U_ABST