Three Head UPVC Seamless Welding Machine for PVC Window and Door

Key Features

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  1. 3-Head One-Cycle Welding

  Welds three corners simultaneously in a single operation, dramatically reducing cycle time compared to single-head machines.

  2. Seamless Welding Technology

  Integrated automatic cutting and corner cleaning after welding—both upper and lower surfaces are smooth with zero visible seam.

  3. Colored Profile Compatible

  Specially designed for co-extruded and laminated colored PVC/UPVC profiles; the weld seam matches the profile color perfectly.

  4. Variable Angle Head

  One head supports 30°–180° adjustable-angle welding, enabling arch windows and special-shaped frames.

  5. PLC + Touch Screen Control

  Intuitive HMI for setting heating time, pressing time, cooling time, and welding temperature.

  6. Precision Pneumatic System

  High-quality pneumatic cylinders ensure consistent clamping force and repeatable ±0.2mm welding accuracy.

  7. Independent or Combined Operation

  All three heads can work together or independently, adaptable to different frame configurations.

  8. Durable Heating Plates

  PTFE-coated heating plates with anti-stick surface for clean, uniform melt lines.

  9. Safety Protection

  Emergency stop, safety guards, and pressure monitoring ensure operator safety.

  10. Easy Maintenance

  Modular design with accessible components; standard spare parts readily available.

  
  

  
  

  
  

Technical Specifications

Machine Details

Control Panel

• Digital display for heating/docking time adjustment
• Emergency stop button and safety interlocks
• PLC control unit for automated cycle management

 

Welding Heads

• Each head equipped with heating plate, clamping mechanism, and cleaning cutter
• Movable heads with pneumatic braking for secure positioning
• Special alloy cutters for durable, precise weld bead removal

Linear Guide System

• High-precision linear rails for smooth head movement
• Self-lubricating design reduces maintenance and extends service life

Why Choose Our Three Head Seamless Welding Machine for PVC doors and windows?

1. Superior Weld Quality: Seamless finish enhances product aesthetics and market value; weld strength exceeds industry standards.
2. Cost-Effective: High productivity reduces labor costs; low maintenance design minimizes downtime.
3. Versatile: Adapts to various PVC profiles and window/door designs; supports custom angle welding.
4. Reliable Performance: Heavy-duty construction and top-brand components ensure long-term stability.
5. Easy Operation: This Three Head Seamless Welding Machine for PVC doors and windows adopts a user-friendly interface with pre-set professional programs, requiring minimal training for operators, which greatly lowers the operating threshold for factory production.

How It Works

Profile Loading – Operator places pre-cut PVC/UPVC profiles into the clamping fixtures of all three heads.

Automatic Clamping – Pneumatic cylinders clamp profiles firmly in position.

Heating – PTFE-coated heating plates move in and melt the profile ends to the preset temperature and time.

Pressing & Welding – Heating plates retract; pressing mechanism pushes melted ends together under controlled pressure.

Seamless Cleaning – Integrated cutter trims excess material at the corner; both surfaces are automatically smoothed.

Cooling & Release – After cooling cycle, clamps release the finished frame—ready for next process (e.g., corner cleaning or glazing).

FAQ

Q1: What materials can this machine weld?

A1: It is designed for PVC/UPVC profiles, including colored, co-extruded, and sprayed profiles.

Q2: Can it weld different angles?

A2: Yes, the third head supports 30° to 180° arbitrary angle welding for special design requirements.

Q3: What is the production capacity?

A3: It can weld 2--3 window corners per cycle, with a daily output of 80--120.

Q4: Can the machine be customized?

A4: Yes, we support personalized customization including special welding height, working length, voltage standard, and customized fixtures to match your diverse production requirements.