摘要:
An apparatus and method for sharpening a disc blade includes a grinding wheel mounted on a housing. The housing is mounted on a drive shaft so that the housing rotates with the drive shaft but can move axially relative to the drive shaft. A transversely extending projection on the housing extends into a space between two axially spaced spacers on the drive shaft. A spring is positioned between each spacer and the projection for resiliently biasing the housing in an axial direction.
摘要:
A method and apparatus for producing a roll or log of bathroom tissue or kitchen toweling with a pattern (M) being repeated between each pair of transverse perforations (LP) wherein an extensible web having a pattern thereon repeated at equally longitudinally spaced position is advanced along a path toward a rewinder having a knife-equipped perforator and a cutoff mechanism. A detector senses the position of each pattern and also sensed is the position of the perforation knife with the positions being reported to a controller. The perforation knife is adjusted to insure that each perforation is between pattern positions and the cutoff mechanism is adjusted to stay in time with the transverse lines of perforations to provide a selected count of patterns in each winding cycle.
摘要:
An apparatus and method for sharpening a disc blade includes a grinding wheel mounted on a housing. The housing is mounted on a drive shaft so that the housing rotates with the drive shaft but can move axially relative to the drive shaft. A transversely extending projection on the housing extends into a space between two axially spaced spacers on the drive shaft. A spring is positioned between each spacer and the projection for resiliently biasing the housing in an axial direction.