Packaging film clamping device

The utility model relates to a packaging film clamping device. The packaging film clamping device comprises a U-shaped shell base with a rightward opening, U-shaped grooves with forward openings are formed in the three edges of the shell base, rear-end connecting rods are arranged in the lower U-shaped groove of the shell base, a middle connecting shaft is arranged between the left ends of the rear-end connecting rods and located in the left U-shaped groove of the shell base, front-end connecting rods are connected to the right ends of the rear-end connecting rods, a first rotary shaft is in key connection with the middle of the front-end connecting rod arranged above the shell base, and is installed on the shell base, the middle of the front-end connecting rod arranged below the shell base is sleeved with a second rotary shaft which is installed on the shell base, a driving connecting rod is arranged at the upper end of the first rotary shaft, a transmission device is arranged at the upper end of the driving