ROTATING ANVIL

摘要

A rotating anvil is provided to reduce the friction between upper and lower anvils by generating an interval between the upper and lower anvils. A rotating anvil comprises an upper anvil(20) wherein a shaft(30) is penetrated through the center, and a lower anvil(40). The lower anvil contacted to the lower surface of the upper anvil molds a material(1) by vertically operating a punching die(42) attached to its lower surface by the operation of the upper anvil to be combined to the outer periphery of the shaft. The upper anvil has a driving gear(36) rotating by the power of a motor(34) at its one side, and a block(24) having a chamber(26) at its upper surface. The lower anvil includes a driven gear(38) for driving the lower anvil by rotating the driving gear to be engaged with the driving gear. An interval between the upper and lower anvils is generated by lowering a front end(30a) of the shaft installed inside the chamber via the hydraulic pressure if the hydraulic pressure is supplied into the chamber of the block, and by lowering the lower anvil according to the lowering width of the shaft.