Machine consists of a sensor for noncontact scanning and measuring of the roll, lap, or reel diameter, and a control module. Unwinder must be fitted with a pneumatic brake or pneumatic slip clutch. Control module converts the electric signal into an analog pressure signal to produce the required pneumatic pressure for the brake or slip clutch to maintain the constant tension, which is adjustable.
Boschert: Constant tension system
Boschert (Mobile, AL) introduces its first constant tension system called BZS 3. System control is designed to maintain constant unwinding and winding tension for mechanical winders.
Jun 30th, 2002
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