Marking machine for marking transmission valve body

The utility model discloses a marking machine for marking a transmission valve body. The device comprises a device main body, a mounting plate and a control panel, sliding grooves are formed in the middle positions of the two sides of the interior of the device body. And a sliding sleeve is fixedly connected to the bottom end of the sliding groove, a fixing base is fixedly connected to the middleof the interior of the device body, a fixing inserting block is arranged in the middle of the interior of the fixing base, a plug pin is fixedly connected to one side of the spring, and a pull rod isfixedly connected to one side of the plug pin. According to the utility model, the fixed seat is arranged at the middle position in the device main body; the transmission valve is placed on the fixedseat; the fixed inserting block can be inserted into the first inserting hole; when the transmission valve is fixed, the protruding block extrudes the plug pin, the plug pin extrudes the spring and moves towards the interior of