Circuit board line printing device

The utility model discloses a circuit board line printing device which comprises a box body, the inner top wall of the box body is fixedly connected with a hydraulic cylinder, a hydraulic rod of the hydraulic cylinder is fixedly connected with a moving mechanism, the moving mechanism comprises a supporting plate, a motor, a sliding rod, a threaded rod, a sliding block and a bearing, and the lower end of the moving mechanism is fixedly connected with a connecting rod. A connecting plate is fixedly connected to the lower end of the connecting rod, a scraper is fixedly connected to the lower end of the connecting plate, a workbench is arranged below the scraper, push-pull mechanisms are arranged on the two sides of the workbench, the inner side wall of the box body is fixed to the other sides of the push-pull mechanisms, and a bottom plate is slidably connected to the lower end of the workbench; a box door is arranged on the front end face of the box body, an observation window is arranged in the box door, and a