What are the sewing modes of automatic 4 thread overlock sewing machine?

What are the sewing modes of automatic 4 thread overlock sewing machines?

7: swing shuttle, Rotary shuttle, semi multi-function, full multi-function, semi-automatic multi-function, full-automatic multi-function, and super-automatic multi-function.

1. Swing shuttle sewing machine: a popular household sewing machine produced in large quantities in China.

2. Rotary shuttle sewing machine: it adopts connecting rod thread take-up and rotary shuttle thread hook mechanism. The rotary shuttle rotates smoothly, has less vibration and noise than the swing shuttle type, and the parts are wear-resistant, which can improve the sewing speed. However, the rotary shuttle has a complex structure and high manufacturing cost, so ordinary household sewing machines are less used.

3. Semi multifunctional overlock sewing machine: on the basis of completing the function of the ordinary sewing machine, a pattern generator (needle rod swing mechanism) is added to control the needle swing left and right. Regular zigzag decorative stitches, Z-shaped elastic stitches, and edging stitches can be sewed through manual lever operation.

4. Full multi-function sewing machine: on the basis of completing the function of semi multi-function sewing machine, a group of left, middle, and right displacement mechanisms of needle bar are added to expand the scope of application. Through manual lever operation, regular zigzag decorative thread sewing based on left, middle, and right can be sewed, button sewing, lock buttonhole, etc.

5. Semi-automatic multi-function sewing machine: on the basis, a group of mechanisms for controlling the swing of the needle rod are added to make the machine needle move white as required to change the width of the horizontal needle, so as to automatically sew regular zigzag decorative sewing.

6. Full automatic multi-function sewing machine: on its basis, the mechanisms for controlling needle rod swing, needle rod left, middle and right displacement, feeding length, and reverse direction are added respectively. It can automatically sew regular zigzag decorative sutures, pattern decorative sutures, and lock buttonholes.

7. Super-automatic multi-function overlock sewing machine: on the basis of completing the function of the full-automatic multi-function sewing machine, a group of mechanisms for controlling the transverse change of sewing material are added to expand the width of the horizontal needle and make the pattern decorative thread sewing more beautiful.