US3712554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding a plurality of web rolls of various widths and radii at a single winding station
Assignee: Eastman Kodak Co
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Filing: 1971-02-01
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Granted: 1973-01-23
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Expires: 1991-02-01
Abstract
Abstract In combination with a slitting apparatus for slitting a stock web into a plurality of narrow strips, there is provided an apparatus for winding the strips into rolls of respective widths and respective radii at a single winding station. The apparatus includes a plurality of wind arms each having a builder roller for driving a core upon which a web is to be wound, and for maintaining web tension to facilitate the web slitting operation. The drive for the builder roller overdrives the builder roller, and includes a slip clutch which, by slipping, enables the builder roller to assume a peripheral speed which is the same as the speed of the web. The overdrive and the degree of coupling in the clutch are utilized to determine web tension. To provide improved tension control, the builder roller is driven from the same source that controls the speed of the web so that the speed profile of the builder roller is similar to that of the web. A driven air roller is mounted on the arm for positively guiding the web toward the builder roller.
Inventors
- 👤 R Lorenzini
- 👤 H Klinkert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:23
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/16; B26D3/161; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
285 words
An apparatus for slitting a web into strips and for winding at least some of the strips into rolls at a single winding station, the apparatus comprising: means for driving the web; means for slitting the web into a plurality of strips; means for concentrically supporting the rolls at the winding station for rotation about their axis; a plurality of independently-pivotable rewind arms at said winding station, each of said rewind arms being associated with a respective strip; means for supporting each of said pivot arms so that they may pivot independently of one another about a common axis generally parallel to said roll axis; a builder roller mounted on each of said arms for pivotable movement therewith and for rotation about an axis spaced from and generally parallel to said roll axis and said common axis; means for overdriving each of said builder rollers relative to the strips, said overdriving means comprising a plurality of slip clutches, at least one of each being coupled to and pivotable with a respective builder roller and adapted to transmit torque to drive said respective builder roller, each slip clutch including a torque input member, and a torque output member adapted to slip relative to the input member and means for coupling the input member to the output member so that said output member may slip relative to the input member, whereby the overdrive between a respective builder roller and its respective strip may be accommodated by slipping of the torque output member relative to the torque input member; and means for coupling said web drive means to said torque input members to impart to said builder rollers speed profiles similar to that of said web drive means.
Claim 2
Independent Claim
285 words
An apparatus for slitting a web into strips and for winding at least some of the strips into rolls at a single winding station, the apparatus comprising: means for driving the web; means for slitting the web into a plurality of strips; means for concentrically supporting the rolls at the winding station for rotation about their axis; a plurality of independently-pivotable rewind arms at said winding station, each of said rewind arms being associated with a respective strip; means for supporting each of said pivot arms so that they may pivot independently of one another about a common axis generally parallel to said roll axis; a builder roller mounted on each of said arms for pivotable movement therewith and for rotation about an axis spaced from and generally parallel to said roll axis and said common axis; means for overdriving each of said builder rollers relative to the strips, said overdriving means comprising a plurality of slip clutches, at least one of each being coupled to and pivotable with a respective builder roller and adapted to transmit torque to drive said respective builder roller, each slip clutch including a torque input member, and a torque output member adapted to slip relative to the input member and means for coupling the input member to the output member so that said output member may slip relative to the input member, whereby the overdrive between a respective builder roller and its respective strip may be accommodated by slipping of the torque output member relative to the torque input member; and means for coupling said web drive means to said torque input members to impart to said builder rollers speed profiles similar to that of said web drive means.
Claim 3
Dependent Claim
40 words
The invention according to claim 1 wherein each of said slip clutches is of the type wherein said coupling between said torque input member and said torque output member is a function of the electrical current applied to said clutch.
Claim 4
Dependent Claim
44 words
The invention according to claim 1 wherein said means for coupling said web driving means to said torque input members comprises a series of drive rollers and a belt drivingly coupling at least one of said drive rollers to another of said drive rollers.
Claim 5
Dependent Claim
28 words
The invention according to claim 1 wherein there is mounted on the roll supporting means a plurality of cores, at least some of which are of different widths.
Claim 6
Dependent Claim
43 words
The invention according to claim 1 wherein there is further mounted on at least some of the arms an air bearing that is positioned upstream of its respective builder roller, said air bearings having flanges at their respective ends for guiding the strip.
Claim 7
Dependent Claim
55 words
The invention according to claim 5 wherein at least some of said air bearings are rollers rotatively mounted on their respective arms, and wherein there is provided means for driving at least some of said air rollers so that the linear speeds of their peripheral surfaces are equal to the speeds of their respective strips.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |