Woojin's flanging muffler machinery is used for two manufacturing processes related to vehicle exhaust systems. The first process is to form concentric jackets and spot weld in conjuction with the lock seam / roll & spot / roll & seaming machine into the required shape such as round, oval, rectangular or trianglular.
The second manufacturing process is to flange-up the jackets by flanging at the ends of the muffler jackets. The flange-up mufffler machine is powered by hydraulic cylinders. A vertically mounted hydraulic cylinder moves a specially designed 'up-down' mould to form jackets into the required shape and the 'up-down' mould clamps.
Two horizontally mounted hydraulic cylinders move two specially designed side tools which provides precision flanging at both ends of the final muffler product.