Invention Grant
- Patent Title: Sheet hole punching device
- Patent Title (中): 板孔冲孔装置
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Application No.: US13483769Application Date: 2012-05-30
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Publication No.: US08770078B2Publication Date: 2014-07-08
- Inventor: Kenji Baba , Yuji Hasebe
- Applicant: Kenji Baba , Yuji Hasebe
- Applicant Address: JP Kawasaki-shi
- Assignee: Seiko Ltd.
- Current Assignee: Seiko Ltd.
- Current Assignee Address: JP Kawasaki-shi
- Agency: Manabu Kanesaka
- Priority: JP2006-100253 20060331; JP2006-212535 20060803; JP2007-005512 20070115; JP2007-019457 20070130; JP2007-060841 20070309
- Main IPC: B26F1/04
- IPC: B26F1/04

Abstract:
A sheet hole punching device has a device frame bearing-supporting a plurality of punching members, a driving rotation shaft, a drive motor, a gear mechanism transmitting a rotation of the driving rotation shaft, cam mechanisms converting the rotational movement into vertical movement, and a motor control device. The gearing mechanism includes drive gears fixed on the driving rotation shaft and receiving gears to engage with the drive gears to transmit the rotational movement to the punching members. The cam mechanism includes cylindrical cams formed integrally to the punching members and cam followers fixed to the device frame. The cylindrical cams are provided with V-shaped groove cams to reciprocate 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 a sheet, and subsequently rotated in a reverse direction to punch holes in a following sheet.
Public/Granted literature
- US20120297950A1 SHEET HOLE PUNCHING DEVICE Public/Granted day:2012-11-29
Information query
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