Equipment Positioning and Functions
This equipment is a gantry-type seven-point welding machine (actually welding 6 points at a time), serving as a key process device in the fin production line. It is used to fix two workpieces output by the laminator through multi-point welding, supports multiple welding methods, and is suitable for welding plates within 2.0mm thickness, achieving efficient and precise automated welding.
Main Technical Parameters
|
Item |
Parameter |
Description |
|
Power Input |
Three-phase 380V/50Hz |
Power supply specification for the control box and the entire machine |
|
Rated Input Capacity |
300KVA |
Power demand of the entire machine |
|
Duty Cycle |
50% |
Load capacity during continuous operation (intermittent duty system) |
|
Air Supply Pressure |
0.6MPa |
Operating pressure of the pneumatic system |
|
Cooling Water Pressure |
0.3MPa |
Water pressure required for the cooling system (water source provided by the buyer) |
|
Maximum Electrode Pressure |
2500N |
Maximum welding pressure per electrode |
|
Electrode Stroke |
Upper/lower 50mm each |
Movement range of the electrode up and down |
|
Number of Welding Heads |
6 pairs (12 electrodes) |
Can weld 6 points at a time |
|
Electrode Spacing |
75mm (fixed horizontally) |
Horizontal spacing of welding points, with adjustable horizontal position for the entire machine |
|
Maximum Plate Thickness |
2.0+2.0mm |
Upper limit of applicable plate thickness |
Core Structure and Working Principle
Mechanical Structure
Gantry-Type Frame: Adopts a beam-type steel structure with high rigidity to ensure stability during welding.
Electrode System:
Lower Electrodes: 6 welding electrodes are fixed on a liftable plate, driven by 2 cylinders for overall up-and-down movement; individual electrodes have no independent cylinders.
Upper Electrodes: 6 electrodes are respectively installed on independent cylinders (single cylinder stroke: 20mm). All cylinders are integrated on a liftable plate, driven by 2 cylinders for overall movement, achieving "two-stage control": first, the independent cylinders quickly approach the workpiece, then the overall cylinders apply welding pressure, reducing air consumption and extending cylinder life.
Transformer and Controller:
Equipped with 6 50KVA cast-resin transformers (primary coils made of enameled copper wire), matched with 3 controllers, all installed on the frame. The push-pull structure ensures stable welding current.
Integrated design of transformers and controllers reduces line losses and improves welding efficiency.
Welding Process
Welding Point Control:
Supports 3 welding methods (set via touchscreen). The start signal for the first row of welding points is triggered by the first proximity switch on the conveying rack, followed by equidistant welding according to the set longitudinal point spacing.
Horizontal point spacing is fixed at 75mm, and the entire machine can be adjusted horizontally to adapt to different workpiece sizes.
Electrode Type: Uses standard electrode cap-type electrode heads for easy replacement and maintenance, ensuring consistency in welding point quality.
Auxiliary Systems
Pneumatic System: Uses Airtac brand components with high reliability and precise pneumatic control.
Cooling System: Composed of a main inlet ball valve, branch ball valves, and an aluminum alloy water distribution box, requiring external cooling water (provided by the buyer) to ensure effective heat dissipation of transformers and electrodes during welding.
Equipment Advantages
High-Efficiency Production
Welds 6 points at a time, combined with an automated conveying system, significantly improving welding efficiency and adapting to large-scale production needs.
Flexible Adjustment
Supports multiple welding methods and longitudinal point spacing settings, with easy switching of process parameters via the touchscreen.
Horizontal position of the entire machine is adjustable to accommodate welding requirements for workpieces of different widths.
Energy-Saving and Durable
"Two-stage movement control" design for upper electrodes reduces cylinder idle stroke and air consumption.
Cast-resin transformers have good sealing, strong anti-interference capability, and long service life.
Reliable Quality
Gantry-type frame has high rigidity, with uniform welding pressure (maximum 2500N) ensuring firm welding points.
Electrode cap structure facilitates regular replacement, ensuring stable welding point quality.
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