Automatic marking device for pork quarantine seal in slaughter house

The utility model discloses an automatic marking device for a pork quarantine seal in a slaughter house. The automatic marking device comprises a pig carcass posture adjusting mechanism, a positioning and clamping mechanism, a roller printing and coding mechanism and a base, the base is arranged on one side below the conveying line body; the pig carcass posture adjusting mechanism is mounted on the conveying line body; the positioning and clamping mechanism and the roller printing and coding mechanism are both mounted on the base; the roller printing and coding mechanism comprises a plurality of roller printing modules, a plurality of roller printing and marking driving modules, a lifting seat and a lifting driving module; one end of each roller printing module is hinged to the lifting seat, and each roller printing marking driving module drives the corresponding roller printing module to turn over and abut against a pig carcass; the lifting seat is in lifting sliding connection with the base and is driven by