# US 6,450,381 B1 · Device and method for guiding a transversely stable material web > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,450,381 B1 - Document ID: US6450381B1 - Status: Granted - Kind: B1 - Application number: 09/707,369 - Filed: 2000-11-07 - Granted: 2002-09-17 - Earliest claimed: 1999-11-13 - Assignees: Erhardt & Leimer GmbH - Inventors: Thomas Ernst; Harald Löffler; Johannes Kaczmarek - Web page: https://patentgrep.com/patent/US6450381B1 ## CPC - B65H 20/02: by friction roller - B65H 23/038: by rollers - B65H 23/26: by transverse stationary or adjustable bars or rollers - B65H 35/02: from or with longitudinal slitters or perforators - B65H 2301/4148: slitting - B65H 2301/4189: Cutting - B65H 2301/44318: between rollers - B65H 2404/1122: for rendering elastically deformable - B65H 2404/133: Limited number of active elements on common axis - B65H 2404/1421: rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis - B65H 2404/14212: rotating, pivoting or oscillating around an axis perpendicular to the roller axis - B65H 2404/1442: Tripping arrangements - B65H 2553/42: Cameras - B65H 2555/10: linear - B65H 2701/1762: Corrugated - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES ## Abstract A device and method for guiding a transversely stable material web. The device contains at least one roller and one counter roller disposed on opposite sides of the material web. The roller and counter roller can be swiveled synchronously with each other, thereby holding the material web between each other with a clamping grip. This device provides a substantially higher guiding force in relation to the running direction of the web than devices with stationary abutments. ## Claims ### Claim 1 A device for guiding a transversely stable material web (2) comprising: a plurality of axially aligned rollers (3) for pressing against the top of material web (2), wherein said plurality of axially aligned rollers (3) are pivotally mounted and rotate independently from each other and are transversely displaced with respect to a direction of motion (7) of the material web (2); and a plurality of counter rollers (4) disposed on the opposite side of the material web from said plurality of axially aligned rollers (3) forming an abutment (13), wherein said counter rollers (4) are pivotally mounted and are displaced crosswise with respect to the direction of motion (7) of the material web (2); wherein said axially aligned rollers (3) and said counter rollers (4) form a clamping grip at the center of the material web (2) and wherein at least two of said axially aligned rollers (3) and said counter rollers (4) are in frictional contact with a common shaft (14), said common shaft (14) being driven by a rotational drive (25). ### Claim 2 (depends on 1) The device according to claim 1, wherein said counter rollers (4) are coupled to said axially aligned rollers (3) via a gearing (30) and wherein said counter rollers are displaced and pivoted by a common servo-actuator (31). ### Claim 3 (depends on 1) The device according to claim 1, wherein said counter rollers (4) are supported by a holding means (15), which pivots about a fixed axis (A). ### Claim 4 (depends on 1) The device according to claim 1, wherein said axially aligned rollers (3) and counter rollers (4) are pivotally mounted, and swing about a common axis (A). ### Claim 5 (depends on 1) The device according to claim 1, wherein at least one of said counter rollers (4) is rotationally driven. ### Claim 6 (depends on 1) The device according to claim 1, wherein said axially aligned rollers (3) are pressed against the material web (2) by a servo-actuator (10′), wherein the force of contact pressure by said axially aligned rollers (3) is adjustable. ### Claim 7 A method of guiding a transversely stable material web (2) comprising: placing a plurality of axially aligned rollers against the center of the material web, said axially aligned rollers being rotated independently from each other and are displaced and swiveled crosswise with respect to a direction of motion (7) of the material web; and placing a plurality of counter rollers (4) forming an abutment (13) for supporting the material web, said counter rollers being on the opposite side of the material web from said axially aligned rollers (3) forming a clamping grip therebetween on the center of the material web and said counter rollers rotating independently of each other, wherein said counter rollers (4) are synchronously displaced and swiveled with said axially aligned rollers (3) and wherein at least two of said axially aligned rollers (3) and said counter rollers (4) are in frictional contact with a common shaft (14), said common shaft (14) being driven by a rotational drive (25). ### Claim 8 (depends on 7) The method according to claim 7, wherein the displacement and swiveling movements of said axially aligned rollers (3) and said counter rollers (4) are controlled depending on a measured deviation in the run of the web. ### Claim 9 (depends on 8) The method according to claim 8 further comprising: placing at least one treatment device (21, 22) on the material web, said treatment device is transversely displaceable for computing the deviation in the run of the material web resulting from such displacement, such that displacement of said treatment device causes said web to be shifted accordingly. ### Claim 10 (depends on 9) The method according to claim 9, wherein a nominal value of the control of the run of the web is dependent upon the position of said treatment device (21, 22). ### Claim 11 (depends on 9) The method according to claim 9, wherein said treatment device (21, 22) monitors the material web by a marking imprinted on the material web. ### Claim 12 (depends on 9) The method according to claim 9, wherein said treatment device (21, 22) is a cutting blade (21). ### Claim 13 (depends on 9) The method according to claim 9, wherein said treatment device (21, 22) is a rifling device (22).