Film feeding device in packing machine

The invention discloses a film feeding device in a packing machine. The film feeding device in the packing machine can avoid the phenomena of film crinkling and film clamping and can greatly reduce generation of static. The film feeding device in the packing machine comprises a pair of front film feeding press rolls and a pair of rear film press rolls, wherein the pair of front film feeding press rolls and the pair of rear film press rolls rotate respectively. The front film feeding rolls comprise a front film feeding upper press roll and a front film feeding lower press roll which are vertically arranged. The rear film feeding rolls comprise a rear film feeding upper press roll and a rear film feeding lower press roll which are vertically arranged. The revolving speed of the front film feeding press rolls is larger than that of the rear film feeding press rolls. A cutter is arranged between the front film feeding press rolls and the rear film feeding press rolls, and a front auxiliary film feeding roller is arranged below the cutter. A belt supporting board and a rear auxiliary film feeding roller are sequentially arranged on the outer side of the front film feeding lower press roll. Driven by the front film feeding lower press roll, an auxiliary film feeding belt rotates around the front film feeding lower press roll, the belt supporting board, the front auxiliary film feeding roller and the rear auxiliary film feeding roller. A rear section film head after being cut by the cutter can fall off on the auxiliary film feeding belt.