Automatic ink feeding device of manual screen printing machine

The utility model relates to the technical field of ink feeding devices, and discloses an automatic ink feeding device of a manual screen printing machine. Comprising a control system, a transmission device, an ink feeding device, a control system and power output box, an eccentric wheel, a connecting rod, a transmission pin, a connecting pin, a support, a first pin, a second pin, a transmission rod, a fixing platform, a three-way valve, an ink barrel, an ink feeding pipe, a base, a sensing supporting column, a scraper and a screen printing plate. The transmission device comprises a power output device which is driven by a motor, an eccentric wheel is connected with an output shaft of the motor, a connecting rod and the eccentric wheel are connected to form a rotating pair, and a transmission rod is rotationally connected with the support through a first pin. The ink feeding device comprises an extraction piston and a piston cylinder, and the extraction piston is matched with the piston cylinder. The movement