Can body seam welder serve as core equipment for the three-piece can production line. Resistance seam welders dominate the market, delivering high-speed, leak-proof side seam welding for tinplate and TFS (Tin-Free Steel) can bodies while ensuring reliable sealing, mechanical strength and fine surface finish. They are widely applied in the production of food cans, beverage cans, aerosol cans and chemical cans.
Working Principle
Relying on Joule heating: electric current passes through the overlapped joint to generate resistance heat; pressure is applied to fuse materials and form a continuous hermetic weld seam.
Key Components
Feeding & curling unit: vacuum sheet picking, double-sheet detection, edge bending and cylinder forming
Welding unit: upper and lower copper wheel electrodes, variable-frequency power supply and servo pressure system
Control system: PLC plus touchscreen with closed-loop regulation of welding current, clamping pressure and running speed
Protection system: nitrogen shielding against oxidation and in-line quality inspection
Structural Composition
Feeding section: sheet hopper, vacuum pick-up mechanism, conveying rollers and double-sheet detector
Curling section: pre-bending, edge conditioning and cylinder forming to guarantee uniform roundness
Welding section: electrode wheels, welding power source, pressing mechanism and nitrogen protection device
Post-processing section: weld coating, drying, cooling and finished can discharging
Electric control section: PLC, HMI, servo drives and fault diagnosis module.
Technical Parameters
Can Type | Food Can, Beverage Can, Chemical Can, etc. |
Welding Linear Speed | 6-26m/min |
Capacity | 40-100cans/min |
Can Diameter | D65-180mm |
Can Height | H70-H320mm |
Applicable Material | Tinplate, Steel-based |
Sheet Thickness | T0.2-0.35mm |
Overlap | 0.4, 0.6mm |
Seam Point Distance | 0.5-0.8mm |
Cooper Diameter | D1.38, D1.5mm |
Cooling Water | ≤20℃，10L/min, 0.4-0.5MPa |
Power | 18KVA |
Dimension | L1800 x W1200 x H1800mm |
