Structure high speed zigzag stitch industrial-use sewing machine

An improved structure for a high speed zigzag stitch industrial-use sewing machine including a pattern cam situated inside a head section controlling transverse motion of a needle holder and a material feed needle plate platform structure disposed at a bottom panel of the sewing machine, and situated in an interior section of the material feed needle plate platform is a dog base plate which facilitates installation of a material feed dog at a top section of the dog base plate, a first end of the dog base plate being conjoined to an eccentric shaft at a tail end of a lower drive shaft of the bottom panel and a second end being conjoined to a rocker arm, such that rotation of the lower drive shaft of the bottom panel initiates movement of the dog base plate and material feed action of a press foot at an upper extent of the material feed needle plate platform, and a revolving shuttle connected to a drive mechanism spins along with the rotating lower drive shaft, facilitating the descension of the needle holder, such that thread at the inner section of the revolving shuttle and a needle at the bottom end of the needle holder is manipulated in a stitching routine that achieves sewing of an object being processed, the structure comprising:

• a main drive shaft of the sewing machine disposed at an upper position at a center section of the sewing machine;
• two belts respectively driving an upper drive shaft of the needle holder and the lower drive shaft of the revolving shuttle, enabling the entire sewing machine to have a height such that the material feed needle plate platform can be elevated under the needle;
• extending upwardly from the top section of the said dog base plate is a vertical base plate with a vertically oriented slot is formed in a center section of the vertical base plate and a horizontally oriented slot formed in a bottom section of the vertical base plate;
• a sliding block situated in each of the vertically oriented and horizontally oriented slots, respectively, such that the vertical base plate slides upward and downward as well as swinging transversely rightward and leftward following articulation of the sliding blocks and the slots;
• wherein the material feed dog is installed at the top section of the vertical base plate such that, when the said dog base plate moves, the vertical base plate moves along with it synchronously, thereby enabling the material feed dog at the top section to complete zigzag stitch as the material is being fed therethrough;
• and in an interior section of the elevated material feed needle plate platform is a vertical drive shaft linked to the drive mechanism of the bottom panel that transports the revolving shuttle close to a lower position of the elevated material feed needle plate platform in synchronization with the rotating lower drive shaft.