Carl Valentin C220, Service Instructions Manual

Page: 13 / 44

C220 / C300 / C400 Product Description
03.22 Service Instructions 13
2.3 Pneumatic
A cylinder with stroke of 220-400 mm is used for the transport of
labels between the peel-off edge of the printer and the labelling
position.
The movement of cylinder is controlled by a control valve on the valve
block.
The speed of movement can be changed by two throttle valves
mounted at cylinder.
The label will be transported by a pad. The pad must be appropriate to
the size of label.
During the label transport a vacuum is applied on the pad.
In operating mode 'blow on' in the lower final position the label is
applied by a high pressure.
The vacuum at the pad is produced by a vacuum generator. The
vacuum generator is controlled by control valve on the valve block.
The low pressure can be adjusted by a throttle valve.
Air is blown from below (supporting air) through a blow tube onto the
label to support the transfer of the label from the printer to the pad.
The blow tube is adjustable concerning the blowing direction.
The supporting air is connected by the magnet valve (support air). The
power of the supporting air can be adjusted by a throttle valve at the
valve block.
The pneumatic maintenance unit is offered as an option for the
applicator. The important components of the pneumatic maintenance
unit are a pressure reducer with manometer, a water separator with
micro filter and a main connector for compressed air.
The distribution of the compressed air to the various pneumatic units
is made in the valve block.
On the valve block is mounted the control valve for support air and
vacuum with their throttle valves and the control valves for the lift
cylinder and blow air.
Cylinder
Pad
Vacuum generator
Blow tube
Pneumatic
maintenance unit
Valve block