−2 −
2. STITCHES OF PIN-POINT SADDLE STITCHING
Pin-point saddle stitching is a stitching method that performs handsewn feeling with a single piece of
thread. Imitation hand-stitch decorative stitching at low cost and with high productivity can be performed in
the process where stitches of the wrong side such as decorative stitches of lapel on gents’ coat or the like
do not appear. For the pin-point saddle stitching, the stitches are formed by means of the concerted action
of sewing needle, hook needle, spreader and looper. Distance between two needles becomes the stitch
width. Distance of stitch plus the portion where stitch does not appear becomes feed pitch.
Relation between stitch (center-to-center of needles) of product and pitch is as described below.
Stitch like a loop is formed since this machine is a single thread chainstitch machine, and the loop is formed
on the sewn product. Accordingly, sewing is performed from the wrong side of product when sewing.
3. CAUTIONS ON SEWING
Conditions when performing curve stitching are deteriorated since sewing needle and hook needle pierce
materials simultaneously. When sewing needle does not pierce the loop that the hook needle has hooked,
stitch skipping may occur, or needle may be bent by materials and come in contact with spreader or looper.
As a result, needle breakage, or damage of spreader or looper may occur.
The more the clearance between needle and needle widens, the more this tendency becomes apparent.
In addition, be sure not to turn the material with the needle pierced. The needle is bent by the material and
comes in contact with spreader or looper. As a result, needle breakage, damage of spreader or looper may
occur. In addition, stitches are not formed, and stithing failures such as stitch skipping, thread breakage,
fabric yarn breakage, etc. will occur.
4. CORNER STITCHING
Corner stitching making hook needle the center can be performed if the top end of hook needle slightly
pierces the material while the hook needle hooks loop and sewing needle is in the loop when needle bar
comes down.
Timing is very delicate and high technique is required. Perform carefully when you want to execute this
stitching. In addition, the motor with needle positioner is recommended.
Center-to-center
of needles (stitch)
Material
Feed pitch
To Next Page
Loading...
Need help?
General
