| 摘要 |
PROBLEM TO BE SOLVED: To provide a seam skip and tread breakage check device of a sewing device which can realize the detection of seam skips cost-effectively with a simple structure, has an improved accuracy for seam skips and tread breakage, and contributes to an improved productivity with a good operation efficiency. SOLUTION: This check device has a structure for detecting the position of a slack section of a given length D by a detection device 8. Therefore, the position of the slack position securely corresponds to the presence or absence of a seam skip S and tread breakage. This device realizes the detection of seam skips S and tread breakage highly accurately without errors and can judge the phenomena of seam skips and tread breakage securely. The detection device 8 comprises a simple air supply device 19 which can only give a tension to an upper tread 3 and an optoelectronic switch 23 as a detection means. COPYRIGHT: (C)2011,JPO&INPIT
|
