Combing device for combing a fiber material

A combing machine, comprising:

• a machine frame;
• a plurality of combing heads arranged in the machine frame;
• a drive unit, the combing heads connected to the drive unit;
• a gearing mechanism arranged in the drive unit;
• an operating device to use in inputting and displaying values;
• a pair of detaching rollers forming a clamping line therebetween at each of the combing heads;
• a nipper unit pivotably mounted in the machine frame at each of the combing heads, the nipper unit comprising:
• a lower nipper plate with a nipper lip and an upper nipper plate, wherein an adjustable distance (d) is defined between the nipper lip of the lower nipper plate and the clamping line;
• a drive arm connected to an intermittently-driven nipper shaft in a rotationally-fixed manner;
• the nipper shaft driven by a nipper auxiliary shaft connected to a coupling element that is connected to a driven gearing element;
• a mechanical blocking configured to fix the gearing mechanism in a basic position during adjustment of the distance (d);
• an eccentric rotationally fixed on the nipper shaft;
• a sensor disposed to measure a gap between the sensor and the eccentric;
• and
• the operating device configured to correlate measurement of the gap to the distance (d) and to display the distance (d).