Sewing system and sewing method

A sewing method comprising at least the steps of:

• forming guide patterns indicative of stitches to be sewn;
• by knitting a waste thread onto a surface of a knitted fabric that is one object to be sewn, in such a manner that the stitches are continuously arranged in a predetermined shape;
• placing on a surface of a table a second object to be sewn, and laminating the knitted fabric on the second object to be sewn;
• fetching an image of the surface of the knitted fabric by using an image sensor;
• setting the shape of the guide patterns that are to be detected on the basis of the image and a position of stitches that are to be sewn together on the basis of the guide patterns;
• storing the shape and the position in a storage means;
• scanning the surface of the knitted fabric by said image sensor and fetching corresponding image data sequentially;
• searching the image data for the shape of the guide patterns stored in said storage means while sequentially computing coordinates on which the stitches to be sewn together are positioned on the basis of the detected guide patterns;
• and
• aligning a sewing needle of a sewing machine and the stitches with each other on the basis of the computed coordinates while sequentially executing the sewing of the stitches.

A sewing method, wherein a first knitted fabric, one object to be sewn and a second knitted fabric, the other object to be sewn are sewn together, comprising at least the steps of:

• knitting waste threads onto surfaces of the first fabric and the second knitted fabric in such a manner that stitches are continuously arranged in a predetermined shape and thereby forming guide patterns indicative of stitches to be sewn;
• placing the first knitted fabric on the surface of a table;
• fetching an image of the surface of the first knitted fabric by using an image sensor;
• setting a shape of the guide patterns to be detected on the basis of the image and a position of the stitch to be sewn on the basis of the guide pattern;
• storing the shape and the position in a storage means;
• scanning the surface of the first knitted fabric by said image sensor while sequentially fetching corresponding image data;
• searching the image data for the shape of the guide pattern stored in said storage means and sequentially computing coordinates on which the stitches to be sewn are positioned on the basis of the detected guide pattern;
• aligning a sewing needle of a sewing machine on the stitches to be sewn on the basis of the computed coordinates sewing of the stitches on a back tuck;
• placing the second knitted fabric on the surface of the first knitted fabric;
• scanning the surface of the second knitted fabric by the image sensor while fetching corresponding image data sequentially,
• searching the image data for the shape of the guide patterns stored in the storage means while sequentially computing the coordinates on which the stitches to be sewn are positioned on the basis of the position of the detected guide patterns;
• and
• aligning said sewing needle of said sewing machine on the stitches to be sewn while sequentially sewing the stitches.

A sewing method of sewing a portion of one object to be inserted between first and second end portions of a knitted fabric, the other object to be sewn, comprising the steps of:

• knitting waste threads onto surfaces of the first and second end portions so that stitches are continuously arranged in a predetermined shape thereby forming guide patterns indicative of the stitches to be sewn;
• placing on the surface of a table the object to be sewn and the first end portion on one surface of the object to be sewn,
• fetching an image of the surface of the first end portion by using an image sensor;
• setting the shape of the guide patterns to be detected on the basis of the image and the position of the stitches to be sewn on the basis of the guide patterns;
• storing the shape and the position in said storage means;
• scanning the surface of the first end portion by said image sensor while fetching corresponding image data sequentially;
• searching the image data for the shape of the guide patterns stored in said storage means while sequentially computing coordinates on which the stitches to be sewn are positioned on the basis of the position of the detected guide pattern;
• aligning a sewing needle of a sewing machine on the stitches to be sewn on the basis of the computed coordinates and sewing the stitches;
• reversing the first end portion and the object to be sewn and placing the second end portion on the other surface of the object to be sewn;
• scanning the surface of the second end portion by said image sensor and sequentially fetching image data;
• searching the image data for the shape of the guide patterns stored in said storage means while sequentially computing the coordinates on which the stitches to be sewn are positioned on the basis of the position of the detected guide patterns;
• and
• aligning said sewing needle of the sewing machine on the stitches to be sewn and sequentially sewing of the stitches.

A sewing method of sewing a portion of one object to be inserted between first and second end portions of a knitted fabric, the other object to be sewn, comprising the steps of:

• knitting waste threads onto surfaces of the first and second end portions so that stitches are continuously arranged in a predetermined shape thereby forming guide patterns indicative of the stitches to be sewn;
• placing the first end portion on the surface of a table;
• fetching an image of the surface of the first end portion by using an image sensor;
• setting the shape of the guide patterns to be detected on the basis of the image and the position of the stitches to be sewn on the basis of the guide patterns and storing the shape and the position in said storage means;
• scanning the surface of the first end portion by the image sensor and fetching corresponding image data sequentially;
• searching the image data for the shape of the guide patterns stored in said storage means while sequentially computing coordinates on which the stitches to be sewn are positioned on the basis of the position of the detected guide pattern;
• aligning a sewing needle of a sewing machine on the stitches to be sewn on the basis of the computed coordinates and sequentially back tuck sewing the stitches;
• reversing the first end portion and placing the the second end portion on the object to be sewn;
• scanning the end surface of the second end portion by said image sensor and sequentially fetching image data;
• searching the image data for the shape of the guide patterns stored in said storage means and sequentially computing the coordinates on which the stitches to be sewn are positioned on the basis of the position of the detected guide patterns;
• and
• aligning said sewing needle of the sewing machine on the stitches to be sewn on the basis of the computed coordinates and sequentially sewing the stitches.