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two Head Seamless Welding Machine for PVC Doors and Windows
This dual-head seamless welding machine is a core fabrication unit for high-end uPVC, PVC, and vinyl window and door production. Two synchronized welding heads (left fixed, right movable with pneumatic brake) complete 90° and V-shaped corner joints in one cycle, delivering a 0.2 mm invisible seam without upper/lower welding beads—eliminating most manual corner cleaning for both white and color-foil / co-extruded profiles.
Produced by Lebulang Machine — a China-based manufacturer with nearly 30 years of factory experience in window and door processing equipment — this three-head welding machine is built for joining PVC and UPVC profiles, including colored, co-extruded, and sprayed surfaces. The machine holds CE and ISO certification, supports OEM and ODM orders, and is supplied directly from the factory.
The Dual-Head Seamless Welding Machine is a core fabrication unit engineered for high-end uPVC, PVC, and vinyl window and door production. Specifically designed for color-laminated, co-extruded, and spray-finished profiles, it integrates welding and surface cleaning into a single cycle — delivering invisible corner joints with zero upper/lower welding beads.
This machine eliminates most manual corner-cleaning labor while significantly improving weld strength, surface flatness, and finished-window aesthetics. It is the preferred choice for manufacturers targeting premium door and window markets worldwide.
Key Features
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🔹 Seamless Corner Cleaning
Upper and lower welding beads are trimmed in one pass. The resulting seam is finer than 0.2 mm, with joint strength exceeding the original profile material — ideal for visible-color and foil-faced profiles.
🔹 Dual-Head Synchronous Operation
Supports single-head, double-head, and linkage modes. The right head is movable with pneumatic positioning, accommodating various window dimensions and V-shaped / 90° corner configurations.
🔹 Intelligent PLC Control System
Equipped with a Japanese Omron PLC and Siemens/Omron low-voltage electrical components. Welding temperature, melting time, pressing force, and cooling duration are digitally adjustable — ensuring stable, repeatable results batch after batch.
🔹 High-Rigidity Integrated Structure
The lower worktable is a one-piece cast-iron construction reinforced by precision square linear guides and round guide rails. This zero-deformation design guarantees long-term positioning accuracy even under high-volume production.
Technical Specifications
| Parameter | Value |
| Power Supply | 220V/380v 50Hz (customizable) |
| Input Power | 2.5 kW |
| Working Air Pressure | 0.5--0.8 MPa |
| Air Consumption | 150--200 L/min |
| Welding Profile Height | 20--100 mm (120/140/160 mm optional) |
| Welding Profile Width | ≤120 mm |
| Welding Length Range | 480--3500 mm |
| Overall Dimensions (L×W×H) | 4400×1100×1700 mm |
| Machine Weight | 1300 kg |
| Control System | Omron PLC +pneumatic Drive |
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?
- Superior Weld Quality: Seamless finish enhances product aesthetics and market value; weld strength exceeds industry standards.
- Cost-Effective: High productivity reduces labor costs; low maintenance design minimizes downtime.
- Versatile: Adapts to various PVC profiles and window/door designs; supports custom angle welding.
- Reliable Performance: Heavy-duty construction and top-brand components ensure long-term stability.
- 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.
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.
Hot Tags: Three Head Seamless Welding Machine for PVC Doors and Windows Manufacturer Supplier, Automatic PVC Door Welding Machine Factory
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Contact Info
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Address
Zone B, Rural Revitalization Industrial Park, Xuanzhangtun Town, Qihe County, Dezhou City, Shandong Province, China
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Tel
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E-mail
Send your inquiry to Lebulang Machine for a free quote on thermal break aluminum, curtain wall, insulated glass or UPVC processing equipment. OEM customization supported, factory direct price, fast response.
