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[CN 201721635416.6] thimble protection guide sleeve for cold heading machine
[CN 201721635416.6] Title of a thimble protection guide sleeve for a cold heading machine: Application number of a thimble protection guide sleeve for a cold heading machine: CN 201721635416.6 Applicant: Hu Jin Application Date: 2017-11-29 Patent Type: Utility Model The utility model relates to the technical field of cold heading machines, especially a thimble protection guide sleeve for a cold heading machine, comprising a sleeve and a middle ejector rod, in which a through hole is provided, the through hole includes a central through hole matched with the thimble and a plurality of reinforcing rib through holes parallel to the axis of the central through hole, and a supporting portion is formed between two adjacent reinforcing rib through holes. The reinforcing rib through hole communicates with the central through hole; the middle ejector rod includes a body matched with the central through hole and a reinforcing rib matched with the reinforcing rib through hole; the middle ejector rod is slidably connected in the through hole, and by setting a sleeve, the thimble is arranged in the central through hole, and the slender bolt is pushed out by the middle ejector rod matched with the through hole. Because the supporting part between the two adjacent reinforcing rib through holes in the sleeve supports the thimble, the thimble is prevented from being deformed or broken by force, and because the middle ejector rod has reinforcing ribs, the middle ejector rod is reinforced to prevent the middle ejector rod from being deformed or broken by force.
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