Working Principle of the Steel Reinforcement Frame Roll Welding Machine for Utility Poles
Release time:
2025-09-30
The steel skeleton roll welding machine for utility poles is an automated welding device.
The steel skeleton roll welding machine for utility poles is an automated welding device. Its core operating principle involves using resistance welding technology to join longitudinal main bars with transverse spiral bars (hoop bars) into a ring-shaped skeleton structure. The specific process is as follows:
1. Reinforcement Fixing and Positioning
Longitudinal main bars are positioned through template holes on fixed and movable rotating discs, ensuring uniform spacing.
Spiral bar ends are pre-welded to a main bar, serving as the starting point.
2. Wrapping and Synchronized Welding
The rotating disk drives the main bars at a constant speed. The spiral bars are automatically wound onto the main bars via a bar feeding mechanism, with feed speed synchronized to rotation speed.
Resistance welding technology is employed: pressure is applied to the overlap points via electrode wheels, and an electric current is passed through. The heat generated by contact resistance melts the steel bar surface, forming a robust weld upon cooling.
3. Parameter Control and Forming
The PLC system adjusts pitch (typically 50-100mm), welding current (voltage ≤400V), and electrode wheel pressure (400-500N) to ensure weld strength loss remains below 10%.
The rotating disc moves backward while rotating, forming conical or straight-cylindrical frames, which are finally discharged via a conveyor belt.
Technical Advantages
High Efficiency & Stability: Single-machine daily output reaches 200-300 frames, achieving 16 times the efficiency of manual labor.
High Precision: CNC system controls main rib spacing error ≤±1mm, suitable for frames ranging from 220-4580mm in diameter.
This equipment is widely used in the production of concrete products such as prestressed utility poles and pipe piles, serving as key machinery for enhancing structural strength and production efficiency.
Jiangsu Weijun Industrial Equipment Co., Ltd
Mobile contact：+86 13961013111（Mr. Zhang）
E-mail：weijungongye@126.com
Address：No.1 Yongfeng Road, Xuzhuang Street, Gaogang District, Taizhou City, Jiangsu Province