| 摘要 |
The utility model relates to a thread-cutter for chain-shaped sewing method sewing machines, comprising a plate body, a cutter arm, a cutter, a trippingbar arm, a trippingbar, and a swing arm. The periphery of the plate body is provided with positioning holes; the middle part is provided with a containing groove with screw holes; the rear part of the cutter arm is provided with an arc-shaped guide groove with a rear end which is tilted-up right and front; the middle part and the left end are respectively provided with screw holes; the cutter arm is pivoted on the plate body; the cutter is provided with a slotted hole and is fixedly installed at the left end of the cutter arm. The right end of the trippingbar is provided with a gap; the middle part is provided with two slotted holes; the trippingbar arm is installed on the cutter arm in superposition and sliding arm ways by two slotted holes on the trippingbar arm and the screw holes at the middle part of the cutter arm; the right end of the trippingbar is provided with a through hole and is fixedly installed at the left end of the trippingbar arm by a screw; the left end of the trippingbar is provided with a left and a right hook parts; the middle part of the swing arm is provided with a through hole which is pivoted with the plate body; the front end is a head end whose rear part is provided with a slide ring. |
