Patent ID: 8740128
Filing Date: 2014-06-03
Classification: B65H

Abstract:
1. A winder assembly comprising: a turret assembly rotatably mounted to a frame and a first core and at least one second core mounted for rotation on the turret assembly so that during operation, a web of sheet-type work material can be wound around the first core and the at least one second core, the turret assembly being operable to selectively index the first core and the at least one second core into a winding position and a roll removal position; a lay-on roll assembly pivotally mounted to the frame, the lay-on roll assembly including: an enveloper assembly including: cutting means for cutting the web of sheet-type work material to separate the work material from one of the first core and the at least one second core in response a desired amount of work material rolled there around; and wherein during operation, the turret assembly indexes the first core into the roll removal position and the at least one second core into the winding position, the pivot roll side plate is moved to the working position whereby the nipping pivot roller is operable to press the sheet-type work material against the second core, the cutting means separates the work material from the first core, the pivot roll side plate is moved to the web feeding position whereby the nipping pivot roller is operable to cause the sheet-type work material to be fed into the nip and begin winding around the second core; further comprising biasing means for urging the nipping pivot roller against the work material and the first core in response to the pivot roll side plate being in the working position, the web feeding position or therebetween; wherein the biasing means includes a housing coupled to the pivot roll side plate, the housing defining a bore extending at least part way there through, a sleeve slidingly positioned within the bore; a biasing member threadably engaged in an end of the housing, a spring positioned in the housing and interposed between the biasing member and the sleeve, the sleeve being engagable with the nipping pivot roller and wherein rotation of the biasing member in a first direction causes the spring to be urged against the sleeve which is thereby urged against the nipping pivot roller.