Device for detecting the thickness of banknotes and banknote validator

Abstract

The utility model provides a kind of detection device and currency checking equipment for paper money thickness, and the detection device includes rack, thickness reference roller, thickness detection roller, metal scraping piece and thickness sensor;Thickness detection roller is elastically pressed in the upper of thickness reference roller swing, to form the paper channel that is adapted to paper money thickness between the two;Thickness sensor is arranged on thickness detection roller, to obtain paper money thickness information by lifting amplitude of thickness detection roller after paper money enters paper channel;Metal scraping piece is configured to maintain close contact with thickness reference roller all the time, for removing impurities on the surface of roller body;Thickness reference roller is correspondingly provided with wear-resistant ring surface;Through wear-resistant ring surface, the damage to roller can be effectively reduced, the surface geometry size is maintained, and the impurities are removed by cooperating with scraping piece, so that the wear and precision degradation of roller are greatly reduced, the maintenance cycle and component replacement cycle are prolonged, and the use and maintenance cost are reduced.

Claims

1. A device for detecting the thickness of banknotes, comprising a frame, and a thickness reference roller, a thickness detection roller, a metal scraper, and a thickness sensor disposed on the frame; characterized in that, The thickness detection roller can be oscillatingly and elastically pressed against the top of the thickness reference roller to form a paper feeding channel that adapts to the thickness of the banknote between them. The thickness sensor is installed on the thickness detection roller and is used to obtain the thickness information of the banknote by means of the lifting range of the thickness detection roller after the banknote enters the paper feeding channel. The metal scraper is configured to maintain close contact with the thickness reference roller shaft at all times, and is used to scrape off impurities from the surface of the roller shaft body; wherein, the thickness reference roller shaft is provided with a wear-resistant ring surface.

2. The device for detecting banknote thickness according to claim 1, characterized in that, The thickness reference roller includes a rotating shaft body that is rotatably placed horizontally on the frame, the wear-resistant ring surface is formed on the outer periphery of the rotating shaft body, and the metal scraper elastically abuts against the wear-resistant ring surface.

3. The device for detecting banknote thickness according to claim 2, characterized in that, The wear-resistant ring surface is configured as a ceramic part with multiple gaps arranged in the ring body, and the metal scraper is configured as an integral sheet metal part composed of multiple scraper blades, the scraper blades and the ring body correspond to each other one by one and always maintain an abutment state.

4. The device for detecting banknote thickness according to claim 3, characterized in that, The integrated sheet metal part is vertically and horizontally inserted into the frame so that its scraper blade and the ring body abut against each other perpendicularly.

5. The device for detecting banknote thickness according to claim 2, characterized in that, The frame includes a pressing component and a swing component that elastically engages with the pressing component. The swing component is hinged to the frame. The thickness detection roller is rotatably mounted on the swing component and corresponds one-to-one with the ring body to form the paper feeding channel after the swing component is raised.

6. The device for detecting banknote thickness according to claim 3, characterized in that, The ceramic component is correspondingly bonded and sleeved on the outer periphery of the rotating shaft to form a surface on the ceramic component suitable for paper feeding.

7. The device for detecting banknote thickness according to claim 1, characterized in that, In the initial position, the thickness detection roller is elastically attached to the thickness reference roller shaft.

8. The device for detecting banknote thickness according to claim 1, characterized in that, The thickness sensor is a displacement sensing device used to directly obtain the lifting amplitude of the detection roller.

9. A banknote verification device, characterized in that, Includes the banknote thickness detection device as described in any one of claims 1-8.

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