The extruder line is used for producing welding additives from 3 to 5 mm in diameter from PE and PP granules.
For diameters of 3 and 4mm, 2 welding wires are extruded in parallel from one material.
The system consists of the actual granule extruder – driven by a three-phase motor – a plasticizing unit with 3 separately controllable heating zones and filling hopper, a cooling section, and an adjustable take-off device.
The finished welding wire is collected in 2 PE storage tanks (available separately).
For winding the produced welding wire onto spools, a separate, electrically driven winding unit can be offered.
Several electric fans arranged in the cooling section ensure uniform cooling of the extrudate. No cooling water or compressed air is required.
The control / monitoring unit for the various process parameters is based on a SIEMENS S7-1200 controller with a 4″ touch display.
The scope of delivery includes 3 nozzles that cover the production range of 3 to 5 mm diameter; the precise adjustment of the welding wire diameter is done via the take-off speed.
Instructions and acceptance are carried out at the factory in Germany.
The machine is provided in 3 segments (each approx. 1400 x 600 x 1400 mm) ex works.
Technical data:
Dimensions and Weights:
Dimensions of welding wire system (L x W x H): | 4000mm x 600mm x 1800mm |
Main working height | 1300mm |
Machine frame | Aluminum profiles |
Storage tanks for welding wire made of PE: | Ø 820mm; Height 900mm |
Weight: | approx. 450 kg |
Control and Monitoring Unit:
Controller | Siemens S7-1200 |
Control cabinet | Steel controller housing IP 54 |
Operating element | 4″ touch display |
Electrical Connection:
Input voltage | 400V (3x16A) 50Hz |
Power consumption | 6kW |
Extruder Characteristics:
Drive | Frequency-controlled motor (3-phase) |
Screw | 3-zone screw |
Granulate hopper | Storage for approx. 10 kg of granulate |
Max. Extruder Nozzle Performance | 12 kg/ PE |
Heating zones | 3 |
Temperature range | up to 300° C |
Temperature control | Heating zones individually adjustable |
Production Capacity for Welding Wire Manufacturing
Tested / materials to be used | PE-HD and PP (PP-R) | |
Output capacity at 20°C room temperature | PE-HD = 6kg/h ; | PP = 5kg/h |
Diameter tolerance of welding wire | ± 0.2mm |
Storage Tanks for Welding Wire:
Operation of Storage Tanks / Welding Wire Spools | The welding wire is continuously produced into the storage tanks. From the storage tanks, the welding wire is fed to the separate winding device. |
Recommended storage tanks | Ø 820mm; Height 900mm with rollers Storage capacity for one day’s production 8-10 h |
Video of the Welding Wire System for Manufacturing Plastic Welding Wire 3 4 5mm:
More Information on the Production of Welding Wire for Plastic Welding:
A wire extruder is a specialized machine used in plastic processing for the production of welding wire. Particularly in the production of plastic welding wire with diameters of 3, 4, or 5 mm, the wire extruder plays a central role.
The process is based on the extrusion method, where thermoplastic materials are melted in a heated extruder and then pushed through a precisely constructed nozzle to produce a wire with consistent shape and exact diameter.
Functionality and Technology
Inside the wire extruder, the raw material, usually in the form of granules or powder, is first preheated and homogenized through mechanical shearing. Using a rotating screw drive, the material is further heated, liquefied, and transported to the extrusion area. Here, the specially manufactured die is used to shape the welding wire to the desired size.
The resulting consistency in shape and diameter is crucial for subsequent applications in plastic welding technology.
Process Parameters and Quality Assurance
A crucial aspect of wire extrusion is the precise control of temperature, pressure, and feed rate. These parameters must be optimally coordinated to ensure uniform material distribution and consistent wire quality. Modern wire extruders feature advanced control systems that allow continuous monitoring and adjustment of process conditions.
This reduces waste and ensures high product quality, which is particularly important for welding wire used in critical joining processes.
Areas of Application and Advantages
Plastic welding wire, manufactured with wire extruders, finds application in numerous industrial sectors, such as vehicle construction, the packaging industry, or the construction industry.
The precise manufacturing and the ability to produce various diameters such as 3, 4, or 5 mm allow for flexible integration into different welding processes.
The advantages include:
Outlook and Conclusion
Overall, the wire extruder represents an essential technology in the production of plastic welding wire at the customer’s site, impressing with both its flexibility and high production quality.
The ability to precisely realize specific wire diameters makes it a valuable tool in modern industrial manufacturing processes.