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Product Introduction:
The saw blade dual head mid frequency spot welding machine adopts a semi-automatic pneumatic design, optimized for triple layer welding of 2+2+2mm carbon steel saw blades (with a large saw blade in the middle and a small saw blade on each side). There are a total of four spot welding heads on each side (two on each side), and the electrode spacing of the machine head can be flexibly adjusted left and right to adapt to different specifications of workpieces; The equipment is equipped with a workpiece rotation platform. During operation, the workpiece is manually placed on the fixture and can be started with one click. The left and right welding heads synchronously press down to complete the first welding, and then automatically rise. The rotation platform rotates accurately 90 °, and the head presses down again to complete the second welding, thus completing a complete cycle. The whole machine has a compact structure, modern design, stable and reliable operation, high welding efficiency and excellent energy consumption control. It adopts an innovative operation mode of welding machine fixation and workpiece rotation and movement, significantly reducing operation intensity. It is an ideal choice for multi-point spot welding of carbon steel saw blades.
Features:
① The intermediate frequency inverter control provides a flat and stable welding current, with a full and uniform fusion core, effectively preventing virtual welding, breakdown, and splashing.
② The upper and lower welding heads can independently adjust the pressure to ensure that each point of the three-layer (2+2+2mm) carbon steel laminate is uniformly stressed and the welding strength is balanced.
③ The distance between the electrodes of the machine head can be infinitely adjusted on both sides, ensuring precise positioning and a symmetrical welding point position deviation of less than ± 0.2mm.
④ The rotary platform adopts a precision indexing plate, with high precision in 90 ° rotation and repeated positioning. The secondary welding corresponds perfectly to the first welding point, avoiding misalignment.
⑤ The pneumatic system is equipped with precision pressure regulating valves and oil-water separators, with pressure fluctuations controlled within ± 0.02MPa and consistent quality between batches.
Detailed Images:

Symmetrical double heads: The equipment is equipped with a symmetrical dual head system, which simultaneously applies pressure to the upper and lower welding heads, achieving synchronized welding at two points with a single action, significantly reducing the risk of offset and false welding, and the spacing is adjustable; Through the 90 ° rotation function, repair welding is achieved with equal positions at all four points, and constant pressure and current control ensure the stability of production efficiency and welding quality.

Workpiece rotation platform: The workpiece rotation platform is equipped with products, which are automatically rotated 90 ° by program control to achieve precise correspondence of welding positions and ensure uniform distribution of four welding points; Its indexing and positioning mechanism has high accuracy and operates without any jerks, effectively ensuring the consistency level of batch welding.

Dual cylinders: The upper and lower heads are independently driven by dual cylinders, with adjustable pressure settings to accommodate varying thickness combinations. The downward pressing is smooth and buffered to prevent impact damage to the workpiece, while the pneumatic response is sensitive, ensuring a compact and efficient welding cycle.

Waterway components: All waterway components undergo surface treatment to prevent rusting, and waterway drainage is independently discharged to the water tank. Based on the outflow situation, blockages in the waterway can be observed and eliminated.
Welding Test:


Welding Workpiece: The spot welder is also widely applied in various fields such as automotive components (e.g., nuts, housings, stud welding, and spot welding), home appliance manufacturing (compressor housings, electrical accessories), hardware sheet metal (iron wire products, galvanized plate assemblies), and aerospace precision parts, serving as a versatile, cost-effective industrial platform suitable for thin sheet stacking and multi-point symmetrical welding of various carbon steels, stainless steels, and galvanized plates.
General Structures:


Technical Parameters:
| Items Models | DN(B)-100 | DN(B)-160 | DN(B)-200 | DN(B)-250 |
| Rated power (KVA) | 100 | 160 | 200 | 250 |
| Power input(V) | 3φAC 380V | 3φAC 380V | 3φAC 380V | 3φAC 380V |
| Max. short circuit current (KA) | 30 | 35 | 40 | 45 |
| Duty cycle(%) | 50 | 50 | 50 | 50 |
| Max. force(N) | 6000 | 6000 | 10000 | 15000 |
| Electrode length( MM) | 450 | 450 | 450 | 500 |
| Working stroke( MM) | 80 | 80 | 80 | 80 |
| Cooling consumption(L/min) | 20 | 20 | 20 | 20 |
| Max. welding capacity(MM) | 3.0+3.0 | 4.0+4.0 | 5.0+5.0 | 6.0+6.0 |
Scene Images:


Related Products:
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Adopting a single arm multi joint rocker arm structure and a horizontal platform type lower electrode combination, specially designed for thin plate welding, the front of the workpiece has no indentation, the back is smooth and deformation free, and there is no need to polish after welding; Its flexible rocker arm can easily penetrate into the interior of the box, coupled with pneumatic pressurization and microcomputer control, ensuring that the welding points are firm and stable. It is widely used in the processing of metal products with high surface requirements such as cabinets, elevator door panels, kitchenware, and automotive sheet metal.
Fireproof Door Spot Welding Machine
Elevator Door Panels Double Heads Spot Welding Machine
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Galvanized Sheet Door Multi Head Welding Machine
This is an 11 head multi head welding machine designed specifically for welding galvanized sheet doors, using projection welding technology. The equipment supports manual loading and unloading of materials and automatic completion of welding operations. 11 welding heads can work synchronously, greatly improving production efficiency, ensuring firm and beautiful welding points, and effectively maintaining the anti-corrosion performance of the galvanized layer. It is an ideal choice for mass production in the door industry.
FAQ:
1. When can you arrange shippment?
The shippment is 15 days after getting deopsit, but customized machines should be more than 25 days.

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