Lower film feeding packaging machine for packaging fruits

The invention relates to the technical field of film packaging machines, and particularly discloses a lower film feeding packaging machine for packaging fruits. A bottom plate is arranged under a notch between the inner end of a conveyor and a guide plate; a base frame is slidably clamped to the upper surface of the bottom plate; a motor is installed at the top of the front face of the base frame;a rotating frame is rotatably installed at the top of an inner cavity of the base frame; a central shaft of the rotating frame is connected with the power output end of the motor; the front end and the rear end of a reel are rotatably connected to the positions, close to the edges, of the front wall and the rear wall of an inner cavity of the rotating frame in a sleeving mode; the extending plateis connected to the outer end, corresponding to the reel, of the rotating frame; a sliding block is slidably clamped to the center position, connected with a perpendicular plate, of the outer end ofthe extending plate along the axial direction; the sliding block is rotatably connected with a movable roll shaft in a sleeved mode; a fixed roll shaft parallel to the movable roll shaft rotatably sleeves the position, close to the outer end, of the inner end surface of the extending plate; the telescopic end of a telescopic cylinder connected to the perpendicular plate along the axial direction is connected with the sliding block; and a telescopic cylinder is used for jacking and pulling the sliding block to slide along the perpendicular plate. The problem that film coiled materials with different widths and sizes are difficult to replace efficiently by the lower film feeding packaging machine is solved.