Drive Systems

 Individual spindle tape drive

The individual spindle tape drive is designed on the basis of a multiple reliability factor.
The drive power is provided by a drum shaft which is directly driven by the motor.
This ensures that speed variations from spindle to spindle are kept to an absolute minimum.
A further advantage of this sophisticated transmission system lies in the permanent isolation of the textile area from the drive area, so preventing the possibility of yarn contamination.

Gear box in dual-cam execution

The dual-cam gear box enables the application of two different speeds. This ensures a high degree of flexibility combined with maximum cost-efficiency.
The anti-patterning function is electronically controlled. At the extremes of the winding stroke of the traversing yarn guide, the anti-patterning signal is suppressed to ensure faultless take-up package edges and problem-free package unwinding in the subsequent processes.

The gear box is divided into three functionally defined sections:

• The change wheel section
  Located at the readily accessible, oil-free end of the machine, this section contains the change gears for adjusting the twist level and crossing angle.
  
• The traversing guide cam drive
  This is located in the middle section and is lubricated by an oil circulation system.
  
• The take-up package drive section
  This is located at the rear, again in an oil-free environment, and enables adjustment of the overfeed speed.

Motor spindle drive

Each spindle is driven by an asynchronous motor which is controlled and monitored by a single inverter. Main features of this motor spindle drive:

• Laid out for speeds up to 10.000 rpm
• Reduced maintenance expenditure
• Improved spindle synchronization
• Automatic overload monitoring
• Isolation of textile and drive area
• Reduced heat emission

Servo drive technology

The compact drive unit includes the servo gear, the frequency inverter, and the central operating and control unit of the machine.
The programmable servo gear makes it possible, also at high delivery speed, to produce ready-for-use cross-wound take-up packages for twisted yarn. Ply twist, crossing angle, package shape, package build-up, and package hardness can be adjusted according to customer requirements.
In combination with this gear unit and the motor spindle drive, the result is separate machine sides. This permits small yarn lots with different production data to be processed at the same time.
The innovative drive concept ensures optimum spindle acceleration and synchronization as well as controlled run-down in case of machine stoppage and power failure.
Major merits:

• Delivery speed of up to 150 m/min
• Optimum quality take-up package
• High flexibility due to motor spindle technology with a max. spindle speed of 10,000 rpm

For both drive systems, spindle start and spindle stop as well as threading of the untwisted feed package is made by means of control elements operated by hand or knee.
Compared to machines operated by foot pedals, we obtain a clearance between floor and machine. As a result, the area underneath the machine is more easily accessible and easier to clean.