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4.2.4
Web break detection
4.2.5
Pneumatic dancer
4.2.6
Weight force dancer
4.2.7
Web tension
4.2.8
Web guide (optional)
4.3
Variants
4.3.1
Variant RW500
Definition of terms
Rewinder RW500
A web break is detected via the lower position of the pneumatic dancer.
The pneumatic dancer is used:
• To generate internal web tension.
• As web storage.
The weight force dancer is used:
• To generate a constant web tension to the previous machine (e.g. print-
er).
• As web storage.
• The rewinder can only be operated with web tension.
• The external web tension to the previous machine is generated by the
in-feed shaft with nip roller and the intrinsic weight of the weight force
dancer.
• The internal web tension of the rewinder is generated by the pneumatic
dancer.
• The in-feed shaft with nip roller disconnects the external web tension
from the internal web tension.
The web guide holds the web in an exact side position.
The designation "RW500" means:
Rewinder
RW
Maximum web width = 520 mm
500
Structure and function
Variants
53
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