Board feeding mechanism for immersion gold, immersion copper and black oxide fully-automatic board insertion machine

The invention discloses a board feeding mechanism for an immersion gold, immersion copper and black oxide fully-automatic board insertion machine. The board feeding mechanism comprises a support assembly. The support assembly is composed of a support frame, a first support rod, a second support rod and multiple third support rods. The bottom of the first support rod and the bottom of the second support rod are each fixedly provided with a board feeding assembly. A circuit board storage assembly and an isolation paper storage assembly are fixedly mounted among the tops of the multiple third support rods, wherein the isolation paper storage assembly is located at one side of the circuit board storage assembly. According to the board feeding mechanism, a circuit board or isolation paper can be adsorbed through vacuum adsorption discs; a connecting plate and the vacuum adsorption discs can be driven by an electric guide rail to move horizontally; the vacuum adsorption discs can be driven to move longitudinally th