Chaining thread sew-in device.

摘要

Disclosed is a chaining thread sew-in device of an overlock sewing machine having a first pinching plate 71 and a second pinching plate 72 which form a part of the working face of the sewing machine on the operator side of a needle drop point 4, capable of opening an insertion hole H into which a free end side of a chaining thread Ch linking to the sewing machine side can be inserted in the working face 1a by driving the first pinching plate 71, capable of pinching the chaining thread Ch between the first pinching plate 71 and the second pinching plate 72 by returning the first pinching plate 71 to the initial position while the chaining thread Ch is inserted into the insertion hole H, and further capable of crossing the chaining thread Ch with a cutter 30 so as to be cut by moving the second pinching plate 72 to the first pinching plate 71 side in the state that the chaining thread Ch is inserted into the insertion hole H.