Split prevention method of stitches and split preventor of the same

Abstract

The present invention provides a split prevention method of stitches and a split preventor of the same. According to the invention, a wire hook is configured at the back side of a needle dropping position. The wire hook swings at a state that a curved needle enters after sewing. A hook part at the front end of the wire hook is next to the back side of the curved needle for keeping a needle wire ring in a plurality of needle wire rings, which is captured by the curved needle and is provided at an inlet side. According to the invention, the sewing of at least one needle amount is performed at this state so the needle which descends to the needle wire ring that is kept by the needle hook passes through. The needle wire which is kept by the needle is used for performing self-connection for the needle wire rings, and breaking-off of the bending needle wire is prevented through pressing the bending needle wire by a self-connection part. The split which is specific in the stitches of the double-wire whipstitch can be effectively prevented.

Description

technical field [0001] The present invention relates to a thread fray prevention method for preventing fraying that occurs at a seam at the end of sewing in stitches of double lockstitch formed by a needle thread and a looper thread using a sewing machine such as a double thread lockstitch sewing machine and a lockstitch sewing machine, and A fray preventing device for carrying out the method. Background technique [0002] The double-thread overlock sewing machine includes: a plurality of needles that keep the needle thread rising and falling, and a looper that keeps the looper thread advancing and retreating in the direction of the arrangement of the needles. A plurality of needles penetrate the sewing material on the needle board, descend, pull out the sewing material, and rise. The looper advances and retreats under the needle plate in conjunction with the raising and lowering of the needles, and catches the needle thread loop (needle thread loop) held by the rising need...

AI Technical Summary

Problems solved by technology

[0008] For example, in the sewing of thin sewing materials and soft sewing materials, in order to obtain a good finished state, the tension applied to the needle threads 6, 6 and the looper threads 7 is reduced, because the needle thread loops 6a, 6b are Insufficient fastening of the looper thread 7 causes the above-mentioned problems

Images