Cut-off mechanism of semi-automatic double-split zipper horizontal cutting machine

The utility model discloses a cut-off mechanism of a semi-automatic double-split zipper horizontal cutting machine. The cut-off mechanism is characterized by comprising a movable shearing plate, a fixed shearing plate, a fixing plate and a positioning plate, a fixed zipper groove is formed in the fixed shearing plate, and first installing holes are formed in the lower portion of the fixed shearing plate; the positioning plate is provided with a positioning pawl and a second installing hole, the fixing plate is provided with a third installing hole and a hinged hole, a movable zipper groove is formed in the bottom face of the fixing plate, fourth installing holes are formed in the upper portion of the movable shearing plate, and a receding groove is formed in the middle of the bottom face of the movable shearing plate. Due to the fact that the movable shearing plate, the fixed shearing plate, the fixing plate and the positioning plate are arranged and the movable zipper groove is formed in the bottom face of the fixing plate, the problems that an existing single-split semi-automatic cut-off machine cannot achieve semi-automatic zipper cutting off, and due to manual zipper shearing, time and labor are wasted, the working efficiency is low, and the fracture surface of a zipper is skew are solved.