Closure nozzle for discharging reactive plastic material in vacuum, has stop stroke limiter coupled with pneumatically activated piston, which is released in inactivated state of stroke for completely opening nozzle for cleaning process

摘要

The nozzle has an opening stroke adjustable via a stop stroke limiter (4) such that a different blind effect is attained, where the stroke limiter is hydraulically activated. The stroke limiter is coupled with a pneumatically activated piston (6), which is released in an inactivated state of the stroke for completely opening the nozzle for cleaning process. The stoke limiter is adjusted via a thread of a base plate (7).