JP2012045134A5 - - Google Patents

Description

The invention according to claim 2 is characterized in that, in the flat stitch structure of the invention according to claim 1, different colored yarns are used for the first upper decorative yarn and the second upper decorative yarn.
The invention according to claim 3 is a flat stitch sewing machine in which the needle thread stitch forms a flat stitch formed of three rows among the flat stitches of the invention according to claim 1 or 2 , and is parallel to the direction perpendicular to the cloth feed. In addition, three upper needles that move up and down in conjunction with the main shaft, and an elliptical motion that consists of a left and right movement in the direction in which the upper needles are aligned in synchronization with the vertical movement of the upper needle and a forward and backward movement in the cloth feed direction. In a flat stitch sewing machine equipped with a looper and a spreader that reciprocates in front of each upper needle in conjunction with the main shaft and catches and pulls the upper decorative thread during forward movement, the first upper decorative thread is passed through A needle guide, a carrier needle having a hole for passing a second upper decoration thread, and a needle thread stitch in the first and second rows connected to the carrier needle through the front side of the upper needle from the carrier needle An actuating mechanism for moving forward and backward between upper needles forming the A first thread hook for catching and pulling a first upper decoration thread from the first row of needle thread stitches to the thread guide when the dar moves forward, and from the second row of needle thread stitches to the eye of the carrier needle And a second thread hook for catching and pulling the second upper decorative thread,
The invention according to claim 4 is characterized in that, in the invention according to claim 3 , the operating mechanism for moving the carrier needle back and forth is connected to a swing shaft constituting a mechanism for reciprocating the spreader.

According to the invention relating to claim 1, the first upper decoration thread is hung on the first and second rows of needle thread scratches, while the second upper decoration thread is arranged in the second row excluding the first row of needle thread stitches; It is hung on the needle thread scratches of the third row or all rows from the second row to the fourth row, and the upper decorative yarns do not overlap each other.
According to the invention relating to claim 2, the first and second upper decorative yarns of different colors are color-coded, and the stitches are rich in decorativeness.

By the flat stitch sewing machine according to the third aspect, the flat stitch of the invention according to the first aspect can be obtained. If the operating mechanism of the carrier needle is configured independently of the mechanism for reciprocating the spreader, the carrier needle can be operated at an optimal timing. However, as in the invention according to claim 4 , The mechanism can be simplified if the operating mechanism is connected to a swing shaft that constitutes a mechanism for reciprocating the spreader and a part of the configuration is made common.

Claims (4)

  Three or four rows of needle thread stitches formed through the cloth, a looper yarn that is intertwined with each row of needle thread stitches on the lower surface of the fabric, and three or four rows of needle thread stitches on the upper surface of the fabric Among them, the first needle thread stitch that is combined with the first needle thread stitch at the end, the second needle thread stitch next to it, and the second needle thread stitch excluding the first thread stitch A flat stitch structure comprising: a third needle thread stitch, or a second upper thread combined with all the needle thread stitches in each row from the second row to the fourth row.   2. The flat seam structure according to claim 1, wherein different colored yarns are used for the first upper decorative yarn and the second upper decorative yarn.   Three upper needles that are parallel to the direction perpendicular to the cloth feed and move up and down in conjunction with the main shaft, left and right movement in the direction in which the upper needles are aligned in synchronization with the up and down movement of the upper needle, and In a flat stitch sewing machine equipped with a looper that performs an elliptical motion consisting of forward and backward movement, and a spreader that reciprocates in front of each upper needle in conjunction with the main shaft, captures and pulls the upper decorative thread during forward movement, and swings it left and right, A thread guide for passing the first upper decoration thread, a carrier needle having a hole for passing the second upper decoration thread, and a carrier needle connected to the carrier needle so that the eye of the carrier needle is in the first row from the front side of the upper needle. And an operating mechanism for advancing and retreating between the upper needles forming the second row of needle thread stitches, and when the spreader moves forward, the first upper decoration thread from the first row of needle thread stitches to the thread guide is provided. From the first thread hook for catching and pulling, and the needle thread stitch in the second row to the carrier needle Flat sewing machine and having a second thread guide portion for capturing towing a second upper cover thread leading to the eyelet. 4. The flat stitch sewing machine according to claim 3, wherein the operating mechanism for moving the carrier needle back and forth is connected to a swing shaft constituting a mechanism for reciprocating the spreader.