Ink supply device and automatic printing device comprising same

The utility model discloses an ink supply device which comprises a sponge wheel which is a hollow wheel body. The non-woven fabric is arranged on the surface layer of the sponge wheel; the ink injection holes are formed in the sponge wheel at intervals in the radial direction, and the ink injection holes penetrate through the non-woven fabric. According to the technical scheme, ink overflow can be effectively prevented. The utility model further discloses an automatic printing device comprising the ink supply device, the automatic printing device comprises a rack, and a mounting base is arranged on the rack; the printing roller is rotatably arranged on the mounting base, and the printing roller is parallel to the horizontal direction; the ink supply device is rotatably arranged on the mounting seat, is parallel to the printing roller, and provides ink for the printing roller; one end of the printing roller is provided with a drive connecting rod extending downwards. The automatic printing device can realize o