Pickup mechanism, paper currency processing machine and sheet medium processing device

A paper currency processing machine, comprising

• a paper currency tray,
• a pickup mechanism, and
• a paper currency separating mechanism positioned downstream of the pickup mechanism, wherein
• the pickup mechanism comprising:
• a pickup roller having a shaft and a sleeve, a part of a periphery of the sleeve comprising a high-friction part,
• wherein the pickup mechanism further comprises a detecting component, and the detecting component comprises a detecting disc coaxially and fixedly connected with the shaft, and a sensor matched with the detecting disc,
• wherein a position detecting aperture is arranged on the detecting disc;
• along a rotation direction of the detecting disc, an end position of the position detecting aperture, matched with the sensor, is associated with a position where the high-friction part of the pickup roller is located, so as to control a rotation stop position of the pickup roller.

A sheet medium processing device, comprising a pickup mechanism, wherein the pickup mechanism comprising:

• a pickup roller having a shaft and a sleeve, a part of a periphery of the sleeve comprising a high-friction part,
• wherein the pickup mechanism further comprises a detecting component, and the detecting component comprises a detecting disc coaxially and fixedly connected with the shaft, and a sensor matched with the detecting disc,
• wherein a position detecting aperture is arranged on the detecting disc;
• along a rotation direction of the detecting disc, an end position of the position detecting aperture, matched with the sensor, is associated with a position where the high-friction part of the pickup roller is located, so as to control a rotation stop position of the pickup roller.