Steel Strip Overlap Spot Welder

I. Application of the Steel Strip Overlap Spot Welder:

The steel strip overlap welder—specifically designed for the overlapping of steel strips and narrow steel bands—is engineered for integration into production lines.

II. Features of the Steel Strip Overlap Welder:

1. It utilizes a microcomputer controller with full digital control capabilities. The operating interface is simple, intuitive, and user-friendly; furthermore, its unique automatic detection function effectively prevents defects such as missed welds or cold welds.

2. A programmable controller serves as the central control hub for the entire machine, responsible for data acquisition and control signal processing, thereby ensuring the precise and effective sequencing of all machine movements.

3. The individual welding heads are mounted on a crossbeam equipped with guide rails, allowing for lateral movement (left and right). This facilitates easy adjustment of the spacing between weld spots, making the machine adaptable for welding a wide variety of workpieces.

4. The welding program for the heads is highly flexible and versatile. Users can select various welding sequences—such as welding from the center outward to the edges, or from the edges inward to the center—among other options. Multiple welding sequences are available for selection, and the specific operational order can be freely customized by adjusting the parameters.

5. The welding machine employs compressed air to actuate the electrodes, ensuring stable welding pressure. The pressure applied by each individual electrode is independently adjustable, as is the stroke of each pneumatic cylinder (adjustable range: 0–50 mm). The upper electrode performs a vertical movement to execute the welding process and features smooth, adjustable positioning in the fore-and-aft direction; the lower electrode assembly allows for lateral (left-and-right) adjustment, and the welding dies can be installed with ease.

III. Operating Principle of the Steel Strip Overlap Spot Welder:

This machine functions as an independent, gantry-style multi-spot welder designed to operate in conjunction with a production line. Support tables for the steel strips must be positioned on both sides of the welder; these tables are equipped with pneumatic clamping mechanisms. Once the workpiece reaches the designated welding position, the leading edge of the first steel strip is clamped in place. Subsequently, the trailing steel strip is positioned with a specific overlap margin and then clamped. After verifying that the steel strips are correctly aligned for welding, the welder is activated. The lower electrodes rise to make contact with the steel strips; the upper electrodes then descend—starting from the center—to simultaneously execute two spot welds at a time, completing a total of 10 spot welds arranged in 5 sets. Upon completion of the welding process, both the upper and lower electrodes retract. Finally, the clamping devices on both sides of the welder release the strips, thereby completing one full operational cycle.