公开(公告)号：US20070057449A1

公开(公告)日：2007-03-15

申请号：US11470737

申请日：2006-09-07

Applicant: Andrew Haasl ,  David Stubenvoll

Inventor： Andrew Haasl ,  David Stubenvoll

IPC: B65H29/54

CPC classification number: B65H29/6636 ,  B65H29/245 ,  B65H29/247 ,  B65H35/08 ,  B65H45/24 ,  B65H2301/51212 ,  B65H2406/12 ,  B65H2406/331

Abstract: A sheet supply system, for use in supplying overlapped sheets to an interfolder, includes a bed roll on which a web is cut into successive sheets. The sheets are supplied to a sheet supply passage leading to retard rolls, which overlap the sheets within the supply passage. The trailing portion of each downstream sheet bulges outwardly as the sheet is supplied to the supply passage. An air tube directs pressurized air into a volume within which the bulge in the downstream sheet is formed. The pressurized air prevents the leading portion of the upstream sheet from being drawn outwardly along with the trailing area of the downstream sheet, by counteracting a vacuum that results from outward movement of the trailing portion of the downstream sheet after it is released from the bed roll. The pressurized air also maintains the upstream sheet in engagement with stripper fingers that guide the sheets through the sheet supply passage, and ensures separation between the trailing end of the downstream sheet and the leading end of the upstream sheet.

Abstract translation: 用于将重叠的片材供应到片间装置的片材供应系统包括将床板切成连续片材的床辊。 这些片材被供给到片材供应通道，导致延迟辊，其与供给通道内的片材重叠。 当片材被供应到供应通道时，每个下游片材的后部向外凸出。 空气管将加压空气引导到其中形成下游片材中的凸起的体积中。 加压空气防止上游片材的引导部分与下游片材的尾部区域一起被向外拉出，通过抵消下游片材的后部从床层剥离之后向外移动而产生的真空 。 加压空气还保持上游片材与剥离器指状物接合，引导片材通过片材供应通道，并且确保下游片材的尾端与上游片材的前端之间的分离。