Invention Grant
US5287809A Method and device for feeding, aligning and holding a sheet on a
sheet-processing machine
失效
用于在片材加工机上进给,对准和保持片材的方法和装置
- Patent Title: Method and device for feeding, aligning and holding a sheet on a sheet-processing machine
- Patent Title (中): 用于在片材加工机上进给,对准和保持片材的方法和装置
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Application No.: US877865Application Date: 1992-05-04
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Publication No.: US5287809APublication Date: 1994-02-22
- Inventor: Martin Greive
- Applicant: Martin Greive
- Applicant Address: DEX Heidelberg
- Assignee: Heidelberger Druckmaschinen AG
- Current Assignee: Heidelberger Druckmaschinen AG
- Current Assignee Address: DEX Heidelberg
- Priority: DEX4114479 19910503
- Main IPC: B41F21/04
- IPC: B41F21/04 ; B41F21/08 ; B41F21/12 ; B65H9/14 ; B41F9/00 ; B65H9/04
Abstract:
A method of feeding, aligning and holding a sheet on a cylinder of a sheet-processing machine, which includes, prior to an occurrence of a gripping operation on a sheet at a cylinder of a sheet-processing machine, forcing a leading edge of the sheet into a contact position wherein the leading edge of the sheet is pressed against moving front lays which are guided over the cylinder, opening sheet grippers carried by the cylinder, inserting the leading edge of the sheet which is in the contact position into the sheet grippers, and maintaining the leading edge of the sheet in the contact position with the front lays until just before closing the sheet grippers; and a device for performing the method.
Public/Granted literature
- US4700164A Magnetic deflecting yoke for cathode-ray tube with shortened neck Public/Granted day:1987-10-13
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