Traction roller tension adjusting device of film blowing machine

The utility model relates to the technical field of film blowing machines, in particular to a tension adjusting device for a traction roller of a film blowing machine, which comprises a base, a lower machine body mounted at the top of the base, two vertical slide rails mounted at the top of the lower machine body, a storage plate fixedly connected to the tops of the slide rails, and an upper machine body mounted at the top of the storage plate. Two sets of sliding blocks are connected to the inner side of the sliding rail in a sliding mode, the number of each set of sliding blocks is two, each set of sliding blocks is connected to the inner side of the sliding rail in a sliding mode, supports are installed on the left sides of the two sliding blocks in each set, and a tension adjusting unit is arranged between the two supports close to the top of the lower machine body. Through the arrangement of the tension adjusting unit, a worker can adjust the position of the adjusting roller by moving the tension adjusti