Transverse stretching equipment for polyimide film

The invention relates to the technical field of film stretching, and discloses a polyimide film transverse stretching device which comprises a supporting unit, a first clamping unit, a second clamping unit, a stretching unit and a locking unit. According to the film stretching device, the locking unit is arranged, when the second clamping unit does not clamp tightly, a film can move in the stretching process, then a locking roller on the surface is driven to rotate, a swing rod on the locking roller rotates synchronously, and a strip-shaped plate slidably installed on the surface is pushed to move; the first clamping unit and the second clamping unit are inserted into the clamping groove, then the baffle and the partition plate are driven to move towards the side away from the first clamping unit, a positioning rack makes contact with a positioning gear, the purpose of locking rotation of the clamping rod is achieved, the clamping rod is inserted into the clamping groove at the moment, the first clamping unit