Butterfly opening pneumatic clamping device for copper and aluminum pipes on finned tube heat exchanger

The utility model discloses a copper aluminum pipe pneumatic butterfly mouth clamping device used on a finned tube heat exchanger, which comprises a copper pipe, a butterfly mouth clamping die and pneumatic scissors, the left end and the right end of the pneumatic scissors are respectively connected with the butterfly mouth clamping die and an air pipe, and the butterfly mouth clamping die comprises an upper clamping plate, a lower clamping plate and an ejector rod. The upper clamping plate and the lower clamping plate are fixed to the pneumatic scissors through connecting bearings, the right end of the ejector rod is fixed to a fixing base in the center of the left end of the pneumatic scissors, and the ejector rod is arranged in grooves in the bottom of the upper clamping plate and the top of the lower clamping plate. According to the copper-aluminum pipe pneumatic butterfly opening clamping device for the finned tube heat exchanger, the butterfly opening clamping die is driven by the pneumatic scissors, a