Pivoting roller nip structure

摘要

A roller nip assembly has a drive axle (with driver rollers) and a drive unit connected to a first end of the drive axle. The drive unit rotates the drive axle. In addition, a slotted mount is connected to a second end of the drive axle (opposite the first end). Additionally, an idler frame (with idler rollers) is positioned adjacent the drive axle. Further, a bias member is connected to the drive axle. The bias member moves the drive axle in the slotted mount to bias the drive rollers toward the idler rollers. The idler frame also includes a pivot structure. The bias member causes the drive axle to pivot. The pivot structure pivots the idler frame to compensate for the pivoting motion of the drive axle and to maintain pressure between the idler rollers and the drive rollers as the drive axle pivots.

主权项

1. A roller nip assembly comprising:
a drive axle; a slotted mount operatively connected to an end of said drive axle; drive rollers on and concentric with said drive axle; an idler frame positioned adjacent said drive axle; idler rollers operatively connected to said idler frame, said idler rollers being positioned to contact said drive rollers; and a bias member connected to said drive axle, said bias member moving said drive axle in said slotted mount to bias said drive rollers toward said idler rollers, said idler frame comprising a pivot structure, said bias member causing said drive axle to pivot, and said pivot structure pivoting said idler frame to maintain pressure between said idler rollers and said drive rollers as said drive axle pivots.