WL-LA-250A Transformer EI Piece Automatic MIG Tig Welding Machine DESCRIPTION The machine is used to automatic welding and assembly for transformer E, I lamination . 1. After assembly of the E piece and I piece, the electric reactor will enter into feeding conveyer belt, then enter into horizontal feeding cylinder area under the effect of adjustable-speed motor. 2. The horizontal feeding cylinder will action, pushing the work piece into vertical feeding cylinder area. 3.