Tail gap winder
AssigneeMinnesota Mining and Manufacturing Company
InventorLeonard M. Volin
Life of this patent
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AssigneeMinnesota Mining and Manufacturing Company
InventorLeonard M. Volin
Estimating the term…
The tail gap winder transfers a web from a first wind-up spindle to a second wind-up spindle by, immediately after the web is cut, pivoting the idler roller to lengthen the distance between the idler roller and the rotating drum to create a gap between the cut ends of the web; moving the first wind-up spindle away from the rotating drum surface as the gap passes under the first wind-up spindle location; moving the second wind-up spindle into contact with the rotating drum surface as the first wind-up spindle moves away; and winding the incoming cut edge around the second wind-up spindle. The idler roller pivots toward the rotating drum to decrease the distance between the idler roller and rotating drum and to take up the extra length of web during the winding portion of the operating cycle.
A winding system for winding a web on cores mounted on respective first and second wind up spindles and for transferring the web between cores on the fly, comprising:
A method of transferring a web from a first core on a first wind-up spindle to a second core on a second wind-up spindle after the web is transported around a first roller, transported to and around a retractable idler roller, wrapped partially around a rotating drum such that the web travels in contact with a portion of the surface of the drum, transported from the rotating drum onto the first core, wound around the first core until the first core has received a predetermined length of web, and cut, the method comprising the steps of:
A method of transferring a web from a second core on a second wind-up spindle to a first core on a first wind-up spindle after the web is transported around a first roller, transported to and around a retractable idler roller, wrapped partially around a rotating drum such that the web travels in contact with a portion of the surface of the drum, transported from the rotating drum onto the second core, wound around the second core until the second core has received a predetermined length of web, and cut, the method comprising the steps of:
Dependencies are inferred from the claim text.