Seiko Corporation

Yoshinori Hoshino

Kenji Baba

Yuji Hasebe

A sheet hole punching device has a device frame; a plurality of punching members arranged in first and second groups, and arranged linearly on the device frame; a driving rotation shaft; a driving motor reciprocally rotating the driving rotation shaft; a gear mechanism transmitting a rotation of the driving rotation shaft; cam mechanisms converting the rotational movement; and a motor control device. The gearing mechanism includes drive gears disposed on the drive rotational shaft, and receiving gears disposed on the punching members to engage with the drive gears. The cam mechanisms include cam followers and cylindrical cams. The cylindrical cam has a V-shaped groove cam to reciprocate each of the punching members between an upper dead point and a lower dead point. The punching members are rotated in one direction to punch holes in first sheets, and subsequently rotated in a reverse direction to punch holes in following sheets.

Growing community of inventors

Yokohama, Japan

Yoshinori Hoshino