Patent ID: 11952231
Assignee: FOXLINK IMAGE TECHNOLOGY CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A paper feeding device defining a paper feeding path along a paper feeding direction, the paper feeding device comprising:
a separation mechanism positioned at an upper portion of the paper feeding path; and
a pickup roller mechanism disposed at an entrance of the paper feeding path, the separation mechanism being disposed to a rear end of the pickup roller mechanism, the separation mechanism being disposed above the pickup roller mechanism, the pickup roller mechanism including
a first pickup unit positioned at the entrance of the paper feeding path, the first pickup unit including a first pickup roller shaft arranged perpendicular to a paper feeding direction, and two first pickup rollers mounted around two opposite sides of the first pickup roller shaft,
a second pickup unit mounted to a rear end of the first pickup unit, the second pickup unit including a second pickup roller shaft parallel to the first pickup roller shaft, two second pickup rollers mounted around two opposite sides of the second pickup roller shaft, and a first driving gear mounted at a middle of the second pickup roller shaft, and
a third pickup unit disposed to a rear end of the second pickup unit, the third pickup unit being positioned under a bottom of the separation mechanism, the third pickup unit including a third pickup roller shaft, two third pickup rollers mounted around two opposite sides of the third pickup roller shaft, a second driving gear mounted at a middle of the third pickup roller shaft, and a transmission belt looped around an outer periphery of the first driving gear and an outer periphery of the second driving gear,

wherein an outer diameter of the first driving gear is smaller than an outer diameter of the second driving gear, a top tooth of the second driving gear is lower than a top tooth of the first driving gear, so an upper surface of the transmission belt slantwise extends upward from an upper portion of the second driving gear to an upper portion of the first driving gear, a lower surface of the transmission belt slantwise extends upward from a lower portion of the second driving gear to a lower portion of the first driving gear.