Creo Dolev 800V+, User Manual

Page: 61 / 90

The Punch System 51
Punch System Design and Operation
The moving part of the punch assembly is the
unit
. It can be either in the
OUT
position or in the
IN
(punching) position.
The moveable cutting blade of the punch is the
rod
. Like the unit, it can be
either in the
OUT
position or in the
IN
position.
Both rod and unit are activated by air cylinders. There are two double-
action air cylinders (not spring-activated) per punch assembly. The punch
system therefore requires a continuous, external air pressure supply for
operation.
An additional operation of every punch assembly is the ejection of used
film slugs from the system. Three blasts of compressed air are used to
achieve this
.
The film slugs are collected into a large black hose, located near the
unloading cassette. You should empty this hose 2 to 4 times per month.
The following describes a typical punching sequence:
Note: This operation is performed following the film punch, and before moving
the punch rod to its OUT position.
Sequence leads to Result
Unit
IN
◊
--> brings unit to punching
position
One (1) sec. delay
◊
--> allows pressure stabilization
Rod
IN
◊
--> executes film punch
One (1) sec. delay
◊
--> allows pressure stabilization
Three (3) blasts of air
◊
--> ejects used film slug
One (1) sec. delay
◊
--> releases pressure completely
Rod
OUT
--> returns to
OUT
position
One (1) sec. delay
◊
--> allows pressure stabilization
Unit
OUT
◊
--> returns unit to
OUT
position