KD 658/20 Four Head Welding Machine


  • Welds four corners of PVC profiles simultaneously at 90° with high accuracy
  • At automatic production mode, works according to the data obtained from window and door production software
  • PC controlled (PID) heat control system to sustain strong welding results in compliance with international standards
  • Heating temperature, melting and welding times can be adjusted individually for every profile type
  • Specially designed long lasting heating plates distributes heat homogenously without being affected by weather conditions
  • Pre heated welding knives provide better welding results in cold weather conditions
  • Welding fixtures can be changed easily and quickly
  • High performance industrial PC operated by Windows 10 operating system, which works between 0oC-55oC without the need for a fan
  • 19” LED Monitor
  • Data transfer is available via network connection or USB interface
  • A database of welding parameters for every individual profile defined by the user (up to 6,000 parameters)
  • All heads are moved by hardened steel ball-screw which provides accuracy and durability
  • Measurement control system ensures high accuracy welding
  • Settings available for white and coloured profiles
  • Summer and winter working mode is automatically selected
  • Central lubrication system eases maintenance
  • Long lasting Teflon usage and easy change by special Teflon system
  • All error messages can be monitored from the screen by the software
  • By online connection to the entire system, remote detection of malfunctions and maintenance is available


  • Power supply: 415V, 3ph, 50-60Hz
  • Power output: 11.75kw, 30.9A
  • Standard welding length: 3,000mm х 2,585mm
  • Minimum standard welding length: 420mm х 420mm
  • Minimum welding length with gasket pressing: 520mm х 570mm
  • Maximum profile height: 180mm
  • Minimum profile height: 30mm
  • Maximum profile width: 120mm
  • Air pressure: 6-8bar
  • Machine height: 1,600mm
  • Machine length: 4,600mm
  • Machine width: 4,300mm
  • Machine Weight: 1,665kg


Automatic 0.2mm and 1.2mm welding seam restriction setting
Barcode reader
Gasket pressing system
Welding fixtures