Patent ID: 9266208
Filing Date: 2016-02-23
CPC Classification: B23K,B23P,B23Q,F16G,Y10T

Claim Text:
1. A metal ring manufacture device for manufacturing a plurality of endless belt-like metal rings by trimming a drum having a cylindrical shape from a metal thin plate into round slices, comprising: a drum introducing unit configured to introduce the drum into a drum retaining unit having a variable outer diameter to be mounted and retained by the drum retaining unit; a drum trimming unit configured to form a plurality of metal rings by trimming the drum into round slices with a predetermined width while the drum is being retained by the drum retaining unit in such a way that the outer diameter thereof is enlarged so as to press the inner circumferential surface of the drum; and a ring conveying unit configured to detach from the drum retaining unit the plurality of metal rings after the press against the inner circumferential surface of the drum is released as the outer diameter of the drum retaining unit is reduced for conveying the plurality of metal rings, the ring conveying unit including a metal ring clamping unit provided with a pair of fingers extending in parallel to each other to clamp both a portion on the inner circumferential surface and a portion on the outer circumferential surface in the circumferential direction of the plurality of metal rings with the arrangement state thereof detached from the drum retaining unit being maintained, and the metal ring clamping unit including a metal ring delivering unit disposed at least on one finger to sequentially deliver each metal ring clamped by the two fingers in the arrangement direction by moving the plurality of metal rings away from the tips of the two fingers one by one so as to convey the plurality of metal rings.