Cold butt welding machine for aluminium and copper - has moving shears to clean joint-surfaces before welding

摘要

Machine for cold butt welding semifinished metal products is fitted with a power-driven upsetting mechanism, guides, and two clamps for the parts being welded. The clamp housings are mounted on the guides so one housing is stationary while the other moves in the upsetting direction. Between the clamp housings are shear-knives with a vertical drive unit at 90 degree to the upsetting direction, for cleaning the joint-surfaces; and each clamp has two jaws and a separate drive unit. On the stationary clamp housing is a support which can move along the upsetting direction, the shears being mounted on this support, and the guides float in mountings on the upsetting mechanism, which is located on a pivot so it can move at 90 degrees to the axis of upsetting. Used for cold butt welding of Al to Al; Cu to Cu; and Al to Cu, e.g. the coil ends of large power transformers or for the mfr. of endless, i.e. very long, wires.