Patent ID: 8899092

Claim:
A bending apparatus for corrugating material, comprising: a support member having a support surface configured to support the material, the support member formed with corrugations; a feed mechanism configured to feed the support member in feed increments corresponding to individual pitches of the corrugations formed on the support member; a bending member configured to be reciprocated between an actuated position and a retracted position to bend the material along the corrugations formed on the support member, a tip of the bending member being moved into one of the corrugations of the support member in the actuated position and being retracted from the corrugations in the retracted position; a hold-down member configured to be reciprocated between an actuated position and a retracted position independent from the reciprocation of the bending member, a tip of the hold-down member being moved into one of the corrugations of the support member which is separate from the corrugation which corresponds with the actuated position of the bending member so as to press down the material against the support member in the actuated position of the hold-down member and being retracted from the corrugations in the retracted position; and a drive mechanism configured to sequentially and independently reciprocate the bending member and the hold-down member so that the hold-down member presses down the material and the bending member bends the material; and an actuator connected to the bending member and configured to move the bending member toward or away from the hold-down member in a lateral direction; wherein the corrugations of the support member support a bent portion of the material as the material is fed in feed increments downstream from the bending member.