Roller type plastic foil bag making machine

The utility model discloses a roller type plastics-film bag-making machine which comprises a frame, a film unwinder roll, a heat seal device that seals the film along the lateral direction and a roll-up device are arranged orderly from one end to the other end of the frame, roll-up device is provided with roll-up diameter control structures respectively at the two ends of the roll-up beam, the structure comprises fixed blocks fixed on the roll-up frame, a spring is arranged between fixed blocks, the spring connects with a sliding block, the sliding block is connected with and drives the roll-up beam; the film bag is easy to be fully heat sealed, and can complete the cooling shaping with affluent time and without the pulling force after heat sealing, the roll-up action can keep the even pace. The utility model can be widely applied to the making of various film bags for improving efficiency, reducing cost and improving work conditions.