UPVC PVC Windows Double Head Seamless Welding Machine

Lebulang Machine, a manufacturer with close to 30 years of factory experience in China producing window and door processing equipment, supplies this double-head seamless welding machine. CE and ISO certification applies, and the unit is offered factory-direct with OEM and ODM support.

Welding and bead removal happen in one automatic clamping cycle. Seam size is controlled directly during the process, leaving colored PVC and UPVC profiles with a smooth surface that requires no secondary cleaning. Joint strength remains stable across varying shop conditions because the pneumatic control system adjusts melt-welding clearance and cycle parameters digitally. Cutting tools are built from heat-treated, precision-finished material and follow a standardized design — an operator can swap them without specialist help. For profiles that incorporate window-support sections, eight cutters weld and clean both corner and transom seams at the same time, supporting standard and crossed support configurations with low-seam clearance.

The machine accepts profile heights from 20 to 120 mm, widths up to 140 mm, and welding lengths between 420 and 3500 mm. It runs on a 220V single-phase supply, draws 4.5 kW, and needs 0.6–0.8 MPa of working air pressure. Dimensions are 5500 × 1050 × 1800 mm, and the unit weighs approximately 1500 kg. Remote installation guidance is included at no additional charge.

Key capabilities include:

• Seamless welding & cleaning -- Completes welding and bead removal in one step, strictly controlling seam size. Ideal for colorful section steels, producing a top-grade appearance.
• Advanced pneumatic control -- Enhances welding strength through software-processed melt-welding clearance and welding cycle. Parameters are digitally adjustable to maintain optimal strength across different environments.
• Standardized, interchangeable cutter -- Made of special material with heat treatment and precision finishing. Fully standardized for easy replacement without a professional technician.
• Integrated window-support welding -- Uses eight cutting tools to weld and clean corners and seams simultaneously. Supports low-seam clearing for standard and crossed window-support profiles, ensuring perfect surfaces and high strength.

Technical Parameters

Why Choose This Machine?

The following reasons are why you choose our UPVC PVC Windows Double Head Seamless Welding Machine:

• Superior Finish: Clean, seamless welds without secondary cleaning.
• Higher Strength: Engineered for weld integrity that outperforms traditional welding.
• User-Friendly: Interchangeable cutters and digital parameter adjustments.
• Versatile: Handles standard profiles and complex window-support designs.

Enhance your production line with seamless technology --- perfect finishes, stronger welds.

FAQ

1. What is seamless welding?

Welding and bead cleaning are completed in one automatic operation, eliminating secondary manual cleaning and delivering a smooth, high-grade finish.

2. Do I need a professional to replace the cutter?

No. The cutter is fully standardized and interchangeable --- any operator can replace it easily.

3. What profile sizes can this machine handle?

• Welding length: 420--3500 mm
• Profile height: 20--120 mm
• Max profile width: 140 mm

It also supports window-support and crossed window-support profiles.

4. Is welding strength consistent in different environments?

Yes. The pneumatic control system includes software processing for melt-welding clearance, and digital parameters allow quantitative adjustments to maintain optimal welding strength under various conditions.

5. What are the power and air requirements?

• Power supply: 220V / 50Hz
• Motor power: 4.5 kW
• Air pressure: 0.6--0.8 MPa
• Air consumption: 180 L/min

6. How large is the UPVC PVC Windows Double Head Seamless Welding Machine?

Dimensions: 5500 × 1050 × 1800 mm | Weight: approx. 1500 kg