Automatic assembling device for U-shaped pipe metal ring

The utility model discloses an automatic U-shaped pipe metal ring assembling device which comprises a rack mechanism, a clamping mechanism, a pressing mechanism and a movable jig mechanism, and the clamping mechanism comprises a movable jig base, a jig front opening and a clamping air cylinder; the downward pressing mechanism comprises a downward pressing mechanism base plate, a downward pressing air cylinder base plate fixedly connected with the downward pressing mechanism base plate and a downward pressing air cylinder arranged on the downward pressing air cylinder base plate. The movable jig mechanism comprises a movable jig, a plurality of U-shaped pipes fixed in the movable jig and metal rings arranged in the U-shaped pipes in a sleeved mode. The clamping air cylinder pushes the jig front opening to tightly press the movable jig, and the downward pressing air cylinder pushes the downward pressing plate base plate to tightly press the U-shaped pipe, so that the metal ring is tightly clamped in the U-shape