Roller coater for printing three-dimensional patterns

The utility model discloses a roller coater for printing three-dimensional patterns, and belongs to the technical field of printing, the roller coater comprises a rack and a conveyor belt, and the conveyor belt is arranged on the rack in a penetrating manner; a coating box and a first motor are fixedly installed on the rack, an ink dipping roller, an ink transfer roller and a coating roller are further rotationally installed on the rack, an output shaft of the first motor is fixedly connected with the ink dipping roller, and part of the ink dipping roller is located in the coating box; the peripheral surface of the ink dipping roller is attached to the peripheral surface of the ink transfer roller, and the peripheral surface of the ink transfer roller is attached to the coating roller; a plurality of first grooves are formed in the peripheral face of the coating roller in the circumferential direction of the coating roller, and the coating roller is used for being attached to the upper surface of a plate. In