Spring collar mounting tool

The utility model belongs to the technical field of logging instruments, and discloses a spring collar installation tool. Comprising a clamping barrel used for clamping the spring collar into the end of the clamping barrel, and a push rod assembly used for stretching into the clamping barrel to axially push out the spring collar in the end of the clamping barrel. A plurality of strip-shaped open grooves which are formed in the circumferential direction of the clamping cylinder at intervals are formed in the end of the clamping cylinder so that clamping jaws can be formed at the end of the clamping cylinder, a chamfering structure is formed on the outer circumferential wall of the free end of each clamping jaw, and an annular groove used for being matched with a spring check ring is formed in the inner circumferential wall of each chamfering structure. And in the process that the clamping jaws are placed into the pre-mounting holes, the pre-mounting holes apply pressure in the radial direction so that the oute