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Common types of welding positioners and their selection principles

Common type of welding positioners

The basic forms of commonly used artificial welding positioner are arm type, tilting and turning back type and double column single rotary type.

  • The main characteristic of the double column single rotary welding positioner is that the motor at one end of the column drives the working device to run in a rotary direction, and the other end is driven by the active end.  The columns on both sides can be designed as lifting type to meet the welding requirements of structural parts of products of different specifications.  The disadvantage of this form of welding positioner is that it can only turn in a circular direction, so we should pay attention to whether the weld form is suitable.  
  • The double seat head and tail double rotation type welding positioner is the movable space of the welded structural parts. On the basis of the double column single rotation type welding positioner, a degree of freedom of rotation is added.  This type of welding positioner is more advanced, large welding space, can rotate the workpiece to the required position, has been successfully applied in many construction machinery manufacturers.  
  • The working device of the L-shaped double rotary welding positioner is L-shaped, with two directions of freedom of rotation, and both directions can be ±360° arbitrary rotation.  This welding positioner has the advantages of good openness and easy operation.  
  • C-shaped double rotary C-shaped double rotary welding positioner is the same as L-shaped double rotary welding positioner, but according to the shape of the structural parts, the fixture of the welding positioner is slightly changed.  This type of welding positioner is suitable for the welding of loader, excavator bucket and other structural parts.  

Selection principle of welding positioners

Welding positioner selection principle has the following 3 points: one is the workpiece applicable principle, two is convenient welding principle, three is easy to operate principle. 

  • The workpiece is applicable to the principle of construction machinery different structural parts of the shape is very different, welding displacement requirements are also different, so according to the structural characteristics and welding requirements of welding structural parts, choose the suitable welding positioner. 
  • Convenient welding principle According to the operation of manual welding, the selected welding positioner should be able to transfer any welding seam of the welder to the flat welding or ship welding position, so as to avoid vertical welding and inverted welding and ensure the welding quality. 
  • The principle of easy operation should choose safe and reliable, good openness, low operation height, compact structure welding positioner, so as to facilitate the operation of workers and welding positioner placement.  If the welding operation height of the welding structure positioner is high, workers can weld by way of cushion height, or adjust the height position by equipped with hydraulic lifting platform.  
Common types of welding positioners and their selection principles