• Tejindra Electric Works

Rocker Arm Spot Welder

Sterco is a manufacturer of a comprehensive range of power electronic system. The product range of the company includes electric welding equipment, TIG welding accessories, servo voltage stabilisers, and auto variable transformers. The company also offers tailor made solutions. The rocker arm spot welder (pedal-operated) model SWE (A) the company offers, is fabricated using finest quality raw material. The electronic control system comprises of solid-state CMOS integrated weld timer having a timing range of 5-99-199 cycles. It is adjustable in step of one cycle by means of thumb wheel switch along with heavy-duty electromagnetic contactor for switching purpose. Equipped with tap changing switch in 8 steps from 50 to 100% for adjustment of welding current, the rocker arm spot welding machine also has a mechanism coupled switch, which initiates the weld only after preset pressure is built up. The rocker arm mechanism coupled with foot pedal is specifically used to attain the electrode force. The force can be varied by adjusting the nut provided on the back-rod below the compression spring of rocker arm mechanism. Arms, electrode holders, electrode, etc., are water cooled. Water cooled transformers can be availed at an extra cost. Thyristor can be used too, to control heat current from 5 to 95% of the available current. Weld time is also adjustable from 1 to 99 cycles in step of one cycle each. A pair of thyristor can be used for switching purpose instead of electro magnetic contactor at an extra cost. A machine of international standard, the rocker arm spot welder is viable for mass production. It requires less operational efforts, and is designed and developed to meet the demand of various metal fabrication shops.