Apparatus and method for making convolutely wound logs
First Claim
1. A surface winder for developing a web log comprising a frame, means operatively associated with said frame for advancing a web along a predetermined path in said frame,a first winding roll rotatably mounted in said frame on one side of said path,stationary finger means mounted on said frame on the other side of said path adjacent said first winding roll and spaced therefrom a distance sufficient to receive a core to be wound in said path, said first winding roll cooperating with said stationary finger means to rotate said core,a second winding roll rotatably mounted in said frame on the other side of said path and downstream in the direction of web advance from said stationary finger means and forming a nip with said first winding roll,means on said frame for moving a core along a second path, said second path merging with said first path, said first winding roll being on a first side of said second path, andpinch bar means on the second side of said second path also adjacent said first winding roll to receive a core and cause the same to rotate, said pinch bar means being spaced from said stationary finger means to provide a throat to enable said web to pass between said pinch bar means and said stationary finger means.
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Accused Products
Abstract
A surface winder for developing a convolutely wound log in which a core introduced into a winding nip is first rotated before engaging a web to effect cutoff and transfer.
69 Citations
9 Claims
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1. A surface winder for developing a web log comprising a frame, means operatively associated with said frame for advancing a web along a predetermined path in said frame,
a first winding roll rotatably mounted in said frame on one side of said path, stationary finger means mounted on said frame on the other side of said path adjacent said first winding roll and spaced therefrom a distance sufficient to receive a core to be wound in said path, said first winding roll cooperating with said stationary finger means to rotate said core, a second winding roll rotatably mounted in said frame on the other side of said path and downstream in the direction of web advance from said stationary finger means and forming a nip with said first winding roll, means on said frame for moving a core along a second path, said second path merging with said first path, said first winding roll being on a first side of said second path, and pinch bar means on the second side of said second path also adjacent said first winding roll to receive a core and cause the same to rotate, said pinch bar means being spaced from said stationary finger means to provide a throat to enable said web to pass between said pinch bar means and said stationary finger means.
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8. A surface winder for developing a log of convolutely wound web material comprising a frame, means on said frame for advancing a web along a first path, means on said frame for advancing cores sequentially along a second path with the second path merging with and terminating in said first path so as to contact a core with said web,
a first winding roll rotatably mounted on said frame on one side of the point of path merger, a second winding roll rotatably mounted on said frame below the other side of said merger point and forming a nip with said first winding roll downstream in said first path, pinch plate means mounted on said frame upstream of said merger point and positioned between said first and second paths for coaction with said first winding roll in imparting rotation to a core prior to contact thereof with said web, finger means on said frame aligned with but spaced from said pinch plate means and positioned on the side of said first path opposite to the side on which said pinch plate is positioned, said finger means coacting with said first winding roll to wind said web on a core.
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9. A method of winding a web on a core to develop a wound log comprising
introducing cores sequentially into a nip between a rotating, stationary winding roll and a fixed pinch bar, each core having an axially extending glue stripe approximately midway between the lines of contact of said core with said stationary winding roll and said fixed pinch bar, rotating each said core to cause the same to roll on said pinch bar, first contacting said core with a continuously advancing web when said glue stripe is in approximate confronting relation with said web whereby web severance and transfer to said core occur substantially simultaneously, and thereafter continuing to rotate said core to wind the web thereon.
Specification