Multi Head Automatic Oil Filled Heater Circular Welding Machine
Main Functions
As a specialized
Resistance Spot Welding Machine, the multiple
Spot Welding Machine for oil filled heater is designed specifically for the welding of oil filled heaters, featuring reliable, efficient and cost-effective welding performance. It adopts microcomputer control, uses silicon controlled rectifier (SCR) as the phase switch, and selects high-performance components, which ensures stable welding quality. Meanwhile, it is equipped with comprehensive protective and warning functions for overheating, air pressure, water pressure, operating errors and other faults to guarantee safe operation.
This multiple spot welding machine for oil filled heater, integrating the advantages of an
Automatic Welding Machine in terms of operational efficiency and stability, is composed of four core units: mechanical unit, pneumatic unit, water cooling unit and electrical unit.
The mechanical unit is the main body of the equipment, which includes the mainframe, upper and lower welding heads, drive components, workpiece alignment components, unloading rack, transformers and other parts, serving as the foundation for the stable operation of this Spot Welding Machine.
The pneumatic unit is the air supply system for the equipment's actions, consisting of pneumatic FRL, pressure regulator, pressure switch, solenoid valve, flow limit valve, muffler, actuating cylinder, gas tank and other components. Its main function is to drive the movement of each actuating cylinder in the equipment, ensuring smooth and accurate action during the welding process.
The water cooling system is the cooling guarantee for the welding and operation process, responsible for cooling the SCR, welding transformer and welding head to prevent overheating and extend the service life of components. It mainly includes water pressure switch, water pipes, water filter, water diverter, water flow display and other components.
The electrical unit is the electrical core of the equipment, including control cabinet, electrical parts, welding transformer and other components. It mainly realizes power supply, detection, control and welding of the equipment. As the command center of the equipment, the control unit is composed of PLC, touch screen, servo drive, welding controller and other main components, ensuring precise control of the entire welding process.
Main Models and Specifications | NO. | Model Name | Material (Thickness: 0.55mm) | Dimensions/L*W*T (mm) | Weight/kg | Option (Tick "√") |
| | Oil filled heater | Cold-rolled sheet SPCE | 590*145*40.3 (at the oil pocket) | 0.815 | √ |
Process Parameters
Fin length (A) 330 ~ 600mm
Convex hole distance (D) > 150mm
Fin width (B) < 160mm
Weldable sheet thickness (G) 0.3 ~ 0.8mm
Fin height (A) < 45mm
Spot distance (S): 35 ~ 50mm
Row distance (J): Adjustable within the width range of workpiece, weldable rows: 1~4 rows
Nugget diameter (H): Φ ± 0.5mm
Number of one-time welding spot: 8 spots * 1 row = 8 spots
Pass rate (%): ≥99 (calculated by pieces)
Technical Parameters of Equipment - Name: The Multiple Spot Welding Machine for Oil filled heater
- Model: Non-standard
- Rated input voltage (V): 380V ±15% 3 phases
- Rated capacity (KVA): ≤128
- Duty cycle (%): 50
- Secondary no-load voltage (V): 3.85
- Secondary max. welding current (KA): 8
- Max. welding speed (seconds): ≤ 4 seconds/fin (4 rows of spot welding, 0.6mm+0.6mm, with reference to the low-carbon steel cold-rolled sheet, steel material complies with EN10130 stamping steel sheets U St grade (or no less than GB/T222 standards, carbon content: 0.05 ~ 0.12%)
- Auxiliary time (S): ≤2 seconds
- Acceptance norm of welding machine: Welding spot diameter is within 3.5 ~ 5.0mm, welding spot depth is < 0.06mm, welding spot burr ≤ 0.1mm;
- Effective electrode stroke (mm): 20
12. Max. electrode pressure (N) (0.6Mpa): ≥2,000 (single welding head)
13. Required air pressure (Mpa): 0.5 ~ 0.6 (with the regulator valve and undervoltage warning shutdown enabled)
14. Controller: In Chinese display, constant current control/grid voltage compensation regulation; with the grid voltage/welding current display enabled, with the overcurrent warning shutdown enabled (set the fluctuation range, warning and shutdown is triggered if the input value exceeds the set value); 16 sets of parameters stored, directly execute the corresponding welding program by selection, the current rises slowly, control of 3 welding currents; multiple pulse setting; calculation of welding spots, pieces; setting of welding spots, pieces, automatic shutdown while calculating, maintenance and other functions enabled, hierarchic management of user permission
15. Cooling water
Required water flow (L/min): 60-80 (the flow meter and the flow warning shutdown system equipped at each waterpath)
Required water pressure (Mpa): 0.15-0.3 (the pressure display and the temperature display are equipped at water inlet and outlet, with the warning shutdown enabled)
16. Total resistance of secondary circuit (μΩ): ≤60
Configuration: | NO. | Name | Brand/Place of Origin | Remark |
| 1 | Main cylinder, 2 sets | SMC | |
| 2 | Pneumatic components | SMC | |
| 3 | Solenoid valve | SMC | |
| 4 | PLC/Touchscreen | Mitsubishi | |
| 5 | Controller, 2 sets | Non-standard independent development | Simple upgrading available |
| 6 | Transformer, 4 sets | Epoxy resin package | |
| 7 | Proximity switch | Omron, Autonics | |
| 8 | Press button switch | Omron, Autonics | |
| 9 | Servo motor | Panasonic, Mitsubishi | |
| 10 | Bearing | THK, NSK | |
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