SL4-FS
4-Head CNC Welder for PVC Profiles
Extreme speed, consistent quality, guaranteed productivity
Perfect if you want:
- Increase productivity to 480 units per shift without compromising on quality.
- Welding 4 corners simultaneously with electronic compensation for deviations.
- Manage complex or non-standard profiles with absolute precision.
- Fully automate the welding cycle while reducing operator workload.
- Integrate the inline welder with the cleaners for a continuous flow.
Request the technical brochure now or speak with an expert.
Extreme speed, consistent quality, guaranteed productivity
The SL4-FS is a CNC welding machine with 4 heads and 7 controlled axes, designed to join all four corners of a PVC frame in a single cycle, achieving a speed that is 50% faster than traditional systems.
Each stage – positioning, melting, compression, and cooling – is managed automatically, ensuring consistent and repeatable quality over time.
Thanks to its reinforced structure, parallel welding system with automatic deviation correction, and software developed by the R&S GRAF Synergy lab, the SL4-FS represents the ultimate solution for companies aiming for production excellence and full integration into Industry 4.0 frameworks.
5 Reasons to Choose SL4-FS
- +50% productivity in 8 hours. High-speed welding thanks to 7 CNC axes and movement on linear guides and racks.
- Custom curb with automatic adjustment. Intelligent adjustment system from 0.2 to 2 mm based on the profile, ensuring optimal welding every time.
- Automatic Corner Correction. The parallel welding corrects dimensional deviations on all four sides, ensuring perfectly square frames every time.
- Intuitive Interface and Barcode Scanning. User-friendly software with preset parameters and guided menus: simple and fast management.
- Electronic Temperature Control. Each profile code is linked to specific thermal parameters to prevent burns and defects.
Product Details
The SL4-FS performs simultaneous horizontal welding of all four corners in a fully automated manner. Each cycle includes digital positioning, thermal control welding, and the release of the frame onto a conveyor, ready for cleaning.
Sizes
Length: 5,250 mm
Width: 2,200 mm
Height: 1,650 mm
Weight: 3.000 kg
Performance
Productivity: up to 480 square feet/8 hours*
Operators required: 1
* (indicative value, depends on profile, curb, and loading system)
POWER SUPPLY and Consumption
Installed power: 16 kW
Power Supply: 400 V
Minimum pressure: 7 bar
Air consumption per cycle: 100 Nl/min
Workable profiles
- Profile height: 40 to 180 mm
- Profile width: 40 to 130 mm
- Weldable frame dimensions: minimum 370×400 mm – maximum 3,200×2,800 mm
Supported features and processes
Main processes:
- Automated cycle positioning and management
- Simultaneous welding of 4 corners
- C-welds
Optional features and custom configurations
The SL4-FS can be equipped with various options for a customised configuration:
- Direct connection with GRAF Synergy cleaners
- Welding kit with three sides, with or without threshold support.
- Brushless motors for greater precision
- Energy Saver for reducing consumption
- Cooling table
Technology and automation
The 7-axis CNC handling system with magnetic reading ensures absolute precision. The GRAF software allows for advanced parameter management, featuring barcode reading, presets for each profile, and remote diagnostics.
The SL4-FS is compatible with Industry 4.0 standards and ready for full integration into management systems.
Want to transform your welding process?
Request the complete brochure now or book a consultation with our technicians. SL4-FS is the professional choice for those seeking performance, efficiency, and quality.
