| 摘要 |
A machine for granulating thermoplastics material includes a cutter head which rotates in a plane parallel to a nozzle plate through which material is extruded. The spacing between the head and plate is adjustable by an arrangement which includes a bush surrounding a spindle carrying the cutter head. An adjustable stop on the bush co-operates with a counter-stop on a differential screw device in order to adjust the spacing. The bush is biased to prevent backlash in the differential screw device. |
