SL4-4
CNC 4-Head Welder for PVC Profiles
Simultaneous welding of all four corners: consistent productivity, guaranteed precision.
Perfect if you want:
- Are you looking for a reliable CNC welder that can produce up to 240 units per shift?
- We work on PVC profiles with strict tolerances and precise aesthetic finishes.
- You need a compact car with a small footprint.
- Do you want to reduce tool change times and machine downtime?
- Are you looking for a solution that easily integrates with automatic cleaners?
Request the technical brochure now or speak with an expert.
Simultaneous welding of all four corners: consistent productivity, guaranteed precision.
The SL4-4 is a CNC welder with four heads arranged in a square configuration, designed to fully automate the horizontal and simultaneous welding of the four corners of a PVC frame.
Thanks to its 3-axis control system and compact design, it ensures smooth and consistent operations over time, even at high production volumes.
From the positioning phase to welding, and finally to the release of the piece onto the conveyor belt towards the cleaning area, every step is optimised to minimise operator intervention and maximise overall efficiency.
5 Reasons to Choose SL4-4
- Flawless Welds. Perfectly flat and uniform surfaces, even during continuous cycles: consistent quality over time.
- Quick tool-free change. Fast attachment/detachment system for counter profiles and non-stick fabric, zero downtime.
- Adjustable Automatic Burning. CNC management of burning (5 to 6 mm) to accommodate different types of profiles.
- Ease of Use and Quick Training. User-friendly interface with data acquisition via USB or TCP-IP network: ready to go immediately.
- Designed for Integration. Can be directly connected in line with Graf Synergy cleaning machines to create a complete welding cell.
Product Details
The SL4-4 allows for the simultaneous welding of the four corners of a PVC frame in a horizontal position, with automatic management of the melting, compression, and cooling phases.
Machine dimensions
Length: 5,250 mm
Width: 2,200 mm
Height: 1,650 mm
Weight: 2.100 kg
Performance
Productivity: up to 240 square meters / 8 hours*
Operators required: 1 (*depending on profiles, seals, and loading speed)
POWER SUPPLY and Consumption
Installed power: 12 kW
Voltage: 400 V
Minimum operating pressure: 7 bar
Air consumption: 180 Nl/min
Workable profiles
Profile height: 40 to 130 mm
Profile Width: 40 ÷ 130 mm
Minimum frame size: 400 x 400 mm
Max frame size: 3,200 x 2,800 mm
Supported features and processes
The precise movement of the heads is ensured by linear guides and high-precision racks, allowing for complete control of the process even with tight tolerances. At the end of the cycle, the piece is automatically released onto exit conveyors.
Main processes:
- Simultaneous welding at four corners
- Fully automatic cycle.
Optional features and available configurations
The SL2-2 can be customized with a range of optional features to enhance its accuracy. To expand the capabilities of the SL4-4, you can integrate:
- Cooling table to optimise the time between welding and cleaning.
- Online connection module for Graf Synergy automatic cleaners
These options make the SL4-4 ideal for integration into automated and flexible work cells, adaptable to the most advanced production needs.
Technology and automation
The SL4-4 stands out for its advanced automation of operations:
- Three-axis movement on CNC controls for maximum precision
- Digital measurement system for capturing data via USB or TCP-IP network.
- Optimised frame and canvas replacement system for quick format changes.
The machine can be easily integrated into Industry 4.0 production systems thanks to its connectivity and data communication capabilities, providing traceability and optimising workflows.
Request a demo or quote
Find out how SL4-4 can enhance your window production line: contact the Graf Synergy team now for personalised advice, to request the technical brochure, or to book a demonstration of the machine in action.
