MDC-80 / Low Height

Automatic spring coiling machine for Bonnell springs

Description of operation

The automatic spring coiling machine MDC-80 is a straightforwardly designed compact unit for producing Bonnell springs.

The wire, which is fed from the swift, is wound into a spring in four steps. After the coiling process, the springs are placed in the 6 star-shaped conveying arms and are then advanced in increments.

The ends of the springs are knotted on the front into end rings and then heat-treated between two electrodes. This heat treatment at circa 300° C relaxes the spring that has become tense from the coiling process and reduces the setting loss. Finally, the completed springs arrive at the spring offl oad point, where they are uniformly stacked for further processing.

  • Technical Data
  • Advantages
Type of springs Bonnell
Spring dimensions Spring end ring Ø (Dfi) 65 - 90 mm
Spring height 4 turns Low Height 55 - 75 mm 4 turns 75 - 120 mm, 5 turns 120 - 150 mm 6 turns 140 - 160 mm 7 turns 160 - 190 mm (on request)
Spring wire gauge 1.9 - 2.3 mm (Dfi 65 - 70 mm) 1.9 - 2.4 mm (Dfi 70 - 90 mm)
Performance up to 80 springs / minute (depending on spring dimensions)
Power consumption approx. 14.5 kVA
Power requirements Voltage: 3 x 400 V, input fuse: 50 A or Voltage: 3 x 220 V, input fuse: 90 A (other Voltages on request) Frequency: 50/60 Hz
Working temperature +10° C to +40° C
Weight net approx. 2‘000 kg (Swift with safety mesh guard net approx. 680 kg)
  • No compressed air required
  • Adjustable knotting device for easy adjustment of the spring diameter
  • Protection cabin
  • 2 eccentric packets for 4 - 5 or 5 - 6 coil springs are standard