Novel paper twisting wheel

Abstract

The invention provides a novel paper twisting wheel, and relates to the technical field of printing machines. The novel paper twisting wheel comprises a left driving rod, a paper twisting wheel, a right driving rod and a foreign matter recovery rod. Round holes with the diameters ranging from 0.5 mm to 3 mm are distributed in the surface of the paper twisting wheel. The left driving rod is made ofmetal, a round baffle with the diameter identical to the external diameter of the paper twisting wheel is arranged at the right end of the left driving rod, the foreign matter recovery rod is made ofgraphite, and when the paper twisting wheel and the left driving rod are assembled together, the foreign matter recovery rod is fixed to the middle of the paper twisting wheel. In a printing machine,voltage not exceeding 24 V is applied to the left driving rod, and as the left driving rod is made of the metal and the foreign matter recovery rod is made of the graphite, under the power-on condition, the foreign matter recovery rod is electrified. In the printing process of the printing machine, if paper scraps are attached to the paper twisting wheel, as the round holes are distributed in thesurface of the paper twisting wheel, by means of the phenomenon that the foreign matter recovery rod is electrified, the fine paper scraps can be sucked to the foreign matter recovery rod, the cleanliness of the paper twisting wheel is kept, and therefore the service cycle of the paper twisting wheel is prolonged.

Description

technical field [0001] A novel paper pickup roller relates to the technical field of printers, in particular to a paper pickup roller. Background technique [0002] All-in-one printing machines, copiers, laser printers, banknote detectors, scanners, and reading machines for office use are loaded with paper, which belongs to the method of forced paper pickup by rotating the pickup wheel. This method is characterized by small size and low cost. The forced pickup method refers to the edge of the first paper head that the pickup roller will press down. Through the pressure and sticking effect, the paper will be moved forward when rotating, and more will be pressed under the pickup roller, and it will smoothly follow the pickup. The rotation of the paper roller advances the paper forward. At this time, the friction force of the pickup wheel on the first paper must be greater than the damping force of the friction plate below, so that the paper can move forward smoothly. However...

AI Technical Summary

Problems solved by technology

However, the pressure of the pickup roller should not exceed the damping force of the friction plate on the second paper, otherwise it will drive the second paper over the friction plate to cause double feeding

Since the pickup roller is constantly in contact with the paper, there is still friction after all, and the current pickup roller material is prone to wear and tear on the surface after a long period of use, and paper dust is easy to adhere to the surface of the pickup roller. As a result, the friction force of the pickup roller on the paper is reduced, and the printer cannot load paper normally.

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