Automatic opening tying and opening shearing device and process for fungus bags

The invention discloses an automatic opening tying and opening shearing device and process for fungus bags. The automatic opening tying and opening shearing device comprises a base, a track plate, a reciprocating pushing mechanism and a cutter mechanism. The track plate covers the base, and the reciprocating pushing mechanism is arranged on the base; the cutter mechanism comprises a connecting block, a left cutter holder, a right cutter holder, a left cutter, a right cutter, a right seat plate and a guide column; a rolling wheel is arranged on the face, facing the track plate, of the right cutter holder, a guide groove is formed in the track plate, the rolling wheel is slidably arranged in the guide groove, and the rolling wheel sliding in the guide groove drives the right cutter to be closed in the direction of the left cutter along with forward pushing of the cutter mechanism by the reciprocating pushing mechanism; the cutter mechanism is driven backwards along with the reciprocating pushing mechanism, and