Product name: China Ac Pneumatic 100Kva Special Aluminium Resistance Welders Projection Welding Machine Stainless Steel for Fuel Filler Cap

This is a semi-automatic projection welding​ solution specifically optimized for fuel filler cap​ production, designed to streamline and simplify manufacturing operations. The operation is intuitive: place the component, initiate welding, and remove the part—easily mastered with minimal training. The machine features an ergonomically designed workbench with an optimized height to significantly reduce operator fatigue. Clear status indicator lights and an audible buzzer allow for accurate monitoring of machine operation even in noisy workshop environments. A robust mechanical structure and splash-proof​ design make daily maintenance exceptionally straightforward. Capable of delivering consistent and reliable weld quality for both low-volume, high-mix or high-volume production, it is a dependable partner for fuel tank manufacturing workshops.

1. Robust & Durable Frame Construction

   The body is engineered for high rigidity, shock resistance, and vibration damping. Precision machining ensures accurate component alignment and load-bearing strength. The internal frame is reinforced with multiple ribs, guaranteeing overall structural integrity during operation and minimizing minute deformation during welding. This ensures process stability and manual operation safety.

2. Efficient & Stable Pressure System

   The upper electrode is driven by a pneumatic-hydraulic booster cylinder, allowing for stepless adjustment of electrode force. This system utilizes standard plant air pressure to achieve high hydraulic output, eliminating the need for a separate hydraulic power unit. A dedicated air storage tank minimizes pressure fluctuations during welding, ensuring stable and consistent force output for every weld.

3. Comprehensive Safety Protection & Monitoring

   The machine is integrated with air and water pressure monitoring switches and alarm systems. It effectively prevents welding operations when coolant is insufficient or air pressure is too low, thereby protecting electrodes and transformers from damage. This provides dual protection for long-term, stable operation and safe use of the equipment.

4. Adjustable Cushioning & Fast Response

   The descent and ascent speeds of the pressure head are independently and infinitely adjustable, effectively cushioning impact on the workpiece and reducing operational noise. The actuation system employs a combination cylinder with an aluminum alloy barrel, low-resistance seals, and lightweight friction rings, paired with a pilot-operated, high-flow solenoid valve. This configuration ensures extremely fast response, sensitive follow-up performance, and high cycling speed.

5. Safe Insulation & Easy Installation

   The secondary circuit utilizes an insulated pressure cylinder base and upper arm​ design, providing stable and reliable insulation. This design allows the machine to be installed directly on a metal base and begin welding work without short-circuit concerns, offering simple installation and high practicality.

6. Powerful & Energy-Efficient Welding Power Source

   The main welding circuit features a fully water-cooled resistance welding transformer and rectifier, delivering robust power output. The efficient cooling system ensures stable performance under continuous, high-duty-cycle operation, while also offering high energy conversion efficiency.

Welding Booster Cylinder

External Intermediate Frequency Controller

The Upper Electrode

Waterway Components

Our factory can customize according to your requirments. More details, please contact!