18
18
4
Adjustments
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
Direction of rotation
Winding torque M
Pulling force F
Ribbon take up hub
Figure 18/3
clockwise (top)
counterclockwise (bottom)
17,5 - 9,0 Ncm
2,5- 3,0 N
Ribbon supply hub
Figure 18/4
any
3,6 - 4,5 Ncm
1,2 - 1,5 N
Table 1
Winding torques at the transfer ribbon hubs
Содержание XD4M/300
Страница 1: ...Made in Germany Service Manual XD4M Label Printer ...
Страница 29: ...29 6 Block Diagram Fig 26 Block diagram Part 1 ...
Страница 31: ...31 7 Layout Diagram PCB CPU Fig 28 Layout diagram PCB CPU components side ...
Страница 32: ...32 32 7 Layout Diagram PCB CPU Fig 29 Layout diagram PCB CPU soldering side with measurement points ...
Страница 34: ...34 34 ...