PA3 Heavy Duty Projection Welders are designed for high quality repetitive welding used in the mass production of component parts, where high production speeds and weld quality are important. The fully automatic machine sequence combined with the use of custom-built tooling ensures accurate assembly of components is achieved even with unskilled operators.
The 400 and 600kVA weld transformers have water cooled, cast copper secondary windings and are fitted within a main frame. At the rear of the transformer an off-load tap change switch is provided for coarse adjustment of the welding heat.
The moving head of the PA3 is mounted in precision built slides on the head extension and is operated using either a 250mm or 300mm diameter double acting air cylinder. The upper head incorporates a fast follow through facility – essential for Projection Welding. For more sophisticated applications, a low inertia, low friction upper head unit incorporating a light alloy slide mounted on roller guides is available as an optional extra.
The lower knee comprises a heavy section high conductivity casting with ‘T’ slot platen on the face plate. Vertical adjustment is by means of a screw jack giving a platen gap of between 145mm and 350mm. The platen size is 254mm x 254mm.
Options that can be added include –
- Single Phase AC or MFDC Weld Transformers
- Water Flow Sensors
- Water Chillers
- Linear transducers for head travel position
- Load Cell for Force verification
- Bespoke Tooling & PLC Control Systems