Stationary Spot Welder Double Head Projection Machine For Steel Drum

Video Demonstration

Product Overview

This intermediate frequency inverter DC dual-head projection welding machine is purpose-built for welding lever lock rings on steel drums. The workpiece surface is galvanized coated or chrome plated, and the machine delivers consistent, high-quality welds essential for steel drum manufacturing. System components include the main frame, pneumatic transmission mechanism, welding positioning fixture, secondary circuit, welding transformer, welding controller, and water/gas circuit systems.

With rated power from 100 to 250 KVA and maximum welding capacity of 6.0+6.0 mm, this stationary projection welder is engineered for demanding sheet metal fabrication environments. Its rugged construction, precise electrode control, and high-speed capacitive discharge provide exceptional productivity for multi-spot welding operations. The machine supports 380V, 220V, or 440V input, ensuring compatibility with global production facilities.

Key Technical Advantages

Rigid High-Strength Frame Structure

The machine adopts a unique tree-style overall structure engineered for impact resistance, shock resistance, and high rigidity. Multiple reinforcing ribs are welded inside the frame to ensure equipment stability during operation, minimizing slight deformation during welding and ensuring consistent weld quality and safe manual operation.

Precise Electrode Positioning

The upper electrode moves vertically in a linear guide with high repeated positioning accuracy, ensuring precise and accurate weld points every cycle. This translates directly to consistent nugget formation and repeatable weld quality across high-volume production runs.

High-Speed Responsive Pneumatic System

Electrode pressurization is smooth and fast, featuring an aluminum alloy cylinder barrel with low-damping sealing rings and a lightweight friction ring combination cylinder. Paired with a pilot high-flow electromagnetic directional valve, it achieves faster response speed and extremely sensitive follow-up performance for maximum spot welding speed.

Energy-Efficient Welding Power Supply

The main welding circuit uses a fully water-cooled resistance welding transformer and rectifier, delivering strong output power while minimizing energy consumption. Capacitive charge-discharge technology provides fast welding speed with short welding time and high efficiency, reducing overall production cost per weld.

Insulation Protection and Safety

The secondary side circuit adopts a pressurized cylinder seat and upper arm insulation method, allowing direct installation and welding on the lower seat without short-circuit concerns. An electrical proportional valve precisely adjusts welding pressure while pneumatic and hydraulic pressure switches with alarms effectively prevent water shortage or gas failure, protecting equipment safety.

Ergonomic Foot Switch Operation

Operation is controlled by a foot switch, delivering high production efficiency with low operator fatigue. This conforms to natural operating habits and allows operators to maintain both hands free for workpiece positioning, significantly improving throughput in continuous production environments.

Applications

Working Principle

Technical Specifications

After-Sales and Support

• Free Spare Parts — Replacement wear parts provided free of charge during the warranty period to minimize downtime.
• Field Installation, Commissioning and Training — On-site setup, calibration, and operator training included to ensure immediate production readiness.
• Video Technical Support and Online Support — Remote troubleshooting and guidance available via video call and online channels after the warranty period.
• 1-Year Warranty — Full warranty on machine components with responsive technical assistance from our engineering team.

Frequently Asked Questions

What materials can this projection welding machine handle?

The machine is designed for galvanized coated and chrome plated steel surfaces, commonly used in steel drum manufacturing. It can weld metal steel sheets up to a maximum combined thickness of 6.0+6.0 mm (model DN(B)-250), making it ideal for lever lock rings and sheet metal components.

What power input options are available?

The standard configuration operates on 3-phase AC 380V input. Custom voltage options include 220V and 440V, allowing the machine to be integrated into production facilities worldwide without additional transformer costs.

How does the dual-head design improve production efficiency?

The dual-head configuration allows two projection welds to be completed simultaneously in a single machine cycle. Combined with the high-speed capacitive discharge system and rapid pneumatic response, this significantly reduces cycle time per workpiece compared to single-head alternatives, increasing overall throughput in high-volume production.

What safety protection systems are incorporated?

The equipment includes pneumatic and hydraulic pressure switches with audible alarms to prevent water shortage or gas failure conditions. The secondary circuit uses insulated upper arm construction to prevent short circuits, and multiple reinforcing ribs in the frame provide structural safety. Duty cycle is rated at 50% for continuous reliable operation.

Can the machine be customized for specific workpiece requirements?

Yes, our factory can customize the machine according to your specific workpiece dimensions, electrode configurations, and production requirements. Custom welding positioning fixtures and automation integration options are available. Contact our engineering team with your drawings for a detailed proposal.

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