Collar device for small u-tube collars

Abstract

The invention discloses a ring sleeving device for a small U-tube lantern ring, the ring sleeving device for the small U-tube lantern ring comprises a ring sleeving device body and a fixing fixture,wherein the ring sleeving device body comprises a solder ring importing groove and an air cylinder push rod device, end portions of two parallelly arranged push rods of the air cylinder push rod device are provided with stepped surfaces, the diameter of the end portion of each push rod is less than the diameter of the rear end of the corresponding push rod, a lantern tube used for secondary propulsion is arranged on the outer side of the larger diameter push rod at the rear end of the push rods, and the end portions of the two parallelly arranged push rod are aligned with two to-be-sleeved end portions of a small U-tube fixed in the fixing fixture. According to the ring sleeving device for the small U-tube lantern ring, two propulsion devices are arranged, the solder ring is first pushed to the end port of the small U-tube, then the solder ring is pushed to an appropriate position by use of the propulsion of the lantern tube, in the whole process, the solder ring can be propelled smoothly, and the deflection can not occur.

Description

technical field [0001] The invention relates to the technical field of air-conditioning accessories, in particular to a collar device for a small U-tube collar. Background technique [0002] In the production process of the heat exchanger, the copper tube needs to be connected into a whole, leaving only one inlet and one outlet. The copper tube is divided into a large U tube and a small U tube during the production process, and the large U tube is penetrated into the aluminum foil. Then connect the end of the large U tube with a small U tube. In the process of connecting and fixing the large and small U tubes, it needs to be welded and fixed. The welding and fixing need to be connected with solder. Generally, a solder ring is put on the small U tube. The socket position of the solder ring must be accurate and not deflected, otherwise it will affect the quality of welding. The existing equipment for socketing solder rings on small U tubes has the problem that the socketing p...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing small U-tube collar devices have the problems that the sleeve is not in place, the position is not accurate enough, and it is easy to deflect.

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