Platform Type Intermediate-Frequency Inverter Seamless Spot Welding Machine

Platform Type Intermediate-Frequency Inverter Seamless Spot Welding Machine (DB-170W)

The Platform Type Intermediate-Frequency Inverter Seamless Spot Welding Machine (Model DB-170W), also known as a single-gun platform spot welder, is designed for high-quality, low-marking spot welding of large and complex sheet metal workpieces. It combines a 1000 * 800 mm electric lifting platform with a multi-joint movable welding arm, so the welding gun travels flexibly across the working area while the workpiece stays fixed in place.

Instead of repeatedly moving heavy cabinets or panels, operators simply position the workpiece on the large platform and move the welding gun to each welding point. This significantly reduces manual handling, shortens cycle time, and keeps every weld within a consistent, ergonomically comfortable working position.

With optimized seamless spot welding technology, the machine produces small welding marks and a smooth, clean surface finish. After painting or powder coating, the welding points are barely visible, helping reduce or even eliminate post-weld grinding and surface finishing operations.

It is particularly suitable for large sheet metal products such as electrical cabinets, control boxes, elevator door panels, kitchen equipment, and household hardware.

1. The operator places and secures the sheet metal workpiece on the large working platform.

2. The platform height is electrically adjusted to match the workpiece size and provide a comfortable working position.

3. The operator moves the welding gun along the multi-joint arm to each welding point. The welding system applies controlled electrode pressure and welding current to form a reliable spot weld.

4. The gun then moves on to the next point until all welds are completed — the workpiece itself never needs to be repositioned during welding.

Welding current and welding time are set on the welding controller according to the material, thickness, and joint requirement, so every spot weld is produced under stable, repeatable conditions.

1. AC or Medium-Frequency Inverter DC Power Supply. The machine can be equipped with either a power-frequency AC welding system or a medium-frequency inverter DC welding system, allowing flexible configuration according to different materials, thicknesses, and production requirements.

2. Flexible Movable Welding Gun. The horizontal welding gun (390 mm length) is mounted on a multi-joint articulated arm and can be moved easily to different welding positions across the 1000 * 800 mm platform area. Large cabinets no longer need to be frequently repositioned, reducing operator fatigue and improving welding efficiency.

3. Smooth, Low-Marking Spot Welds. The optimized welding structure and parameters help minimize indentation and visible welding marks. After painting or powder coating, the welding points are barely noticeable, significantly reducing the need for post-welding grinding and surface finishing.

4. Large-Size Welding Platform. The 1000 * 800 mm working platform provides stable support for oversized sheet metal workpieces. It maintains workpiece positioning during welding, reduces distortion and deformation, and makes loading and unloading easier.

5. Electric Height Adjustment. The platform can be electrically raised or lowered between 700 and 800 mm according to the workpiece size and operating requirements, providing a more ergonomic working height for different workpiece dimensions.

6. Extended Welding Range. The combination of the large platform and the articulated welding arm provides a wide operating range, making it possible to weld multiple positions without repeatedly moving the workpiece. Both open-type cabinets and semi-enclosed cabinets can be handled.

7. Stable 2000 N Electrode Pressure. A stable 2000 N electrode force helps ensure consistent nugget formation and repeatable weld strength across long production runs.

High Efficiency with Less Manual Handling. The movable welding gun allows operators to access different welding points directly from the working position. Large workpieces do not need to be repeatedly moved or repositioned, reducing labor intensity and improving production efficiency.

High-Quality, Repeatable Welds. Welding current and welding time can be adjusted according to the material, thickness, and application, helping achieve consistent and reliable spot welds from the first piece to the last.

Designed for Large Workpieces. The large platform provides stable support for oversized sheet metal components, while the articulated welding arm expands the effective welding area — ideal for large cabinets, metal panels, and enclosures.

Reduced Post-Welding Finishing. Small welding marks and a smooth surface help reduce grinding, polishing, and other finishing operations, improving efficiency and maintaining a clean, professional appearance after painting or powder coating.

Flexible and Ergonomic Operation. The movable welding arm and electric lifting platform make positioning and welding more convenient, improving both operator comfort and productivity.

The single-gun platform spot welder is widely used for welding:

• Electrical control cabinets
• Electrical enclosures
• Sheet metal cabinets
• Elevator metal door panels
• Kitchen equipment
• Household appliances
• Hardware products
• Large sheet metal components
• Metal enclosures and boxes

The machine is suitable for spot welding a variety of conductive sheet metals, including mild steel, low-carbon steel, galvanized steel sheet, stainless steel, aluminum sheet, and other suitable metal sheet materials. Welding parameters are optimized according to the material type, thickness, and joint requirements.

Every workpiece has different dimensions and welding requirements. PDKJ can configure the machine according to the customer's actual application, including:

• Platform dimensions and table size
• AC or medium-frequency inverter DC welding system
• Welding gun and electrode configuration
• Control functions and welding programs
• Fixtures and workpiece positioning

Q1: What is the difference between the AC version and the medium-frequency inverter DC version?

A: The AC version is a cost-effective choice for standard mild steel and galvanized sheet applications. The medium-frequency inverter DC version provides more stable welding current, lower energy consumption, and better control for thicker materials or applications with higher weld quality requirements. The right choice depends on the material, thickness, and production volume.

Q2: Why are the welding marks so small on this machine?

A: The optimized electrode structure, combined with precisely controlled welding current, welding time, and electrode pressure, keeps indentation to a minimum. The welded surface stays smooth and clean, and the marks are barely visible after painting or powder coating.

Q3: Can it weld semi-enclosed cabinets?

A: Yes. The multi-joint articulated arm reaches into openings, so both open-type cabinets and semi-enclosed cabinets can be welded without repositioning the workpiece.

Q4: What workpiece size can the platform handle?

A: The standard platform measures 1000 * 800 mm with an electrically adjustable height of 700–800 mm. Larger platform sizes are available on request for oversized workpieces.

Q5: What is the delivery time and minimum order quantity?

A: The minimum order quantity is 1 unit. Standard packaging is a wooden case, and the typical delivery time is 14 working days.

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Looking for a platform spot welding solution for your large sheet metal products? Contact PDKJ for a recommendation based on your workpiece, material, and production requirements.

WhatsApp: +86 136 1279 3248

Email: pdkj101@gd-pw.com

Website: Contact PDKJ Online

Address: 1-2F, Building 3, Qichen Industrial Park, No. 26 Luxi 1st Road, Liaobu Town, Dongguan City, Guangdong Province, China