End shaft type take-up and pay-off machine convenient to adjust and control

The utility model discloses an end shaft type take-up and pay-off machine convenient to adjust and control, which comprises a support rotating device, speed reducing devices are symmetrically and fixedly connected to two ends of the support rotating device, an auxiliary tensioning device is fixedly connected to one end of each speed reducing device, and each speed reducing device comprises a friction clamping jaw, a limiting screw, a support groove plate and a fixing rod. The friction clamping jaw is fixedly connected to one end of the fixing rod, the fixing rod is inserted into the supporting groove plate in a sliding mode, and the limiting screw penetrates through the supporting groove plate in a threaded mode and is rotationally connected to the side end of the fixing rod. The auxiliary tensioning device comprises a rotating wheel, a fixed supporting plate, a connecting block, a first piston rod, a limiting groove, I-shaped sliding keys, an air cylinder and a second piston rod, and the rotating wheel is ro