A DEVICE FOR FORMING THE CASING OF CENTRIFUGAL FAN

摘要

PURPOSE: A device for forming casing of a centrifugal blower is provided to enable a manufacturer to make a press processing casing in which the thermal strain by welding is prevented. CONSTITUTION: A device for forming casing of a centrifugal blower comprises a plurality of forming rolls(7), a first supporting unit, a push roller(9), a bonding roller, and a second supporting unit. The forming roll is formed in the longitudinal direction in which a workpiece is transmitted. The first supporting member supports the bonding groove when the roll shaped edge of the side plate is inserted in the bonding groove after coming out from the forming roll of the final stage. The first supporting member supports the workpiece which can be progressed by a push roller.