Patent ID: 11931814
Assignee: SANKYO SEISAKUSHO CO.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A plate material cutting device for cutting a conveyed plate material, the plate material cutting device comprising:
a first cutting blade fixed to a housing;
a second cutting blade cutting the conveyed plate material in cooperation with the first cutting blade; and
a drive unit reciprocating the second cutting blade with respect to the first cutting blade; wherein
the drive unit includes a shaft rotatable around a rotational axis, a first motor connected to one end of the shaft, a plurality of cams having a first cam arranged near one end of the shaft, a second cam arranged near the other end opposite to the one end of the shaft, and at least one cam arranged between the first cam and the second cam, the plurality of cams arranged at uniform intervals on the shaft along the rotational axis, the plurality of cams reciprocating the second cutting blade with respect to the first cutting blade in conjunction with rotation around the rotational axis of the shaft and causing the second cutting blade to uniformly apply a first load on the plate material, and a plurality of bearings having a first bearing arranged near one end of the shaft, a second bearing arranged near the other end opposite to the one end of the shaft, and at least one bearing arranged between the first bearing and the second bearing, the plurality of bearings arranged at uniform intervals on the shaft along the rotational axis, the plurality of bearings supporting the shaft to uniformly apply a second load due to the reaction of the first load on the shaft along the rotational axis.