The PRJ-800 Foil Coiling Machine is a dedicated device for the production of low-voltage coils for dry-type transformers and even for production of energy-saving large-capacity transformer coils. The model is characterized by employing three-point synchronous rectification technology, which facilitates high corrective speed and high accuracy. In addition to employing imported linear guide and ball screw, the (in order to ensure smooth welding quality, but also optional water cooling system)..

The tension of the foil is generated by the de-coiling device. The winding spindle is controlled by a variable frequency system so that the machine will maintain stable positive rotation and negative rotation even when under fairly powerful tension. Except for the motor, the implementing mechanism is controlled by pneumatic components.

    The machine consists mainly of: (1) welding device, (2) winding machine, (3) end-insulation de-coiling device, (4) end-insulation guiding device, (5) dust removal device, (6) shearing device, (7) layer-insulation de-coiling device, (8) photoelectric side-control device, (9) raw-edge-smoothening device, (10) materials conveying device, (11) de-coiling machine, (12) correcting device, (13) electric control box, (14) tungsten electrode argon arc welding machine, and (15) feeding car.

 

Main Technical Parameters
Item	Parameters
Coil outer diameter	200600mm
Foil band width	250800mm
Line material shape	circular, square, rectangle
Conductive foil material	Alu foil or copper foil
Thickness of conductive material	Alu0.52mmCopper0.51.6mm
Layer-insulation amount	12layer
Terminal insulation amount	13layer
Winding speed	030 r/min
	(Pedal unrolling control, stepless adjustment)
Soldering speed	00.7m/min(manual, automatic, pneumatic control, stepless adjustment)
Max. tension of foil band	20000N
Aligning accuracy	±0.4mm
Extension scope of de-coiling cylinder	Φ470~Φ520mm
Total power of motors	21kw