Adjustments; Measuring And Adjusting The Winding Torques; Measuring The Winding Torques - CAB XD4M/300 Service Manual

4

Adjustments

18
4.1

Measuring and Adjusting the Winding Torques

The rewinder for the transfer ribbon are coupled to slipping clutches in the main drive. The supply hub of the transfer
ribbon is braked with a slipping clutch during printing.
The correct setting of the torques of these slipping clutches is necessary for:
• Precise conveyance of the transfer ribbon during label transport
• The prevention of wrinkles in the feed path of the transfer ribbon
If the winding torque differs from the set value, it must be adjusted.  4.1.2 on page 20.
4.1.1

Measuring the Winding Torques

Transfer ribbon take up and supply hub
Measurement of the winding torque at the transfer ribbon take up and supply hub occurs by determining the pulling
forces on a test collar attached to the winder.
The physical relation between the torque and the pulling force is:
F= M / r
F: Pulling force [N],
M: Winding torque [Ncm],
r: Radius of the test collar (30 mm)
The set values for the winding torque and the resulting pulling force at the test collar are:
Slipping clutch on
Ribbon take up hub
Figure 18/3
Ribbon supply hub
Figure 18/4
Table 1
Direction of rotation
clockwise (top)
counterclockwise (bottom)
any
Winding torques at the transfer ribbon hubs
Winding torque M
17,5 - 9,0 Ncm
3,6 - 4,5 Ncm
Pulling force F
2,5- 3,0 N
1,2 - 1,5 N
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