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

Method and device for feeding, aligning and holding a sheet on a
sheet-processing machine
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.
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