Zigzag Sewing Machine

Abstract

The invention relates to a zigzag sewing machine, which has a lower pipe base, a lower shaft, a transmission mechanism and a rotary hook. The lower shaft is connected to the transmission mechanism and rotates inside the lower pipe base with the X axis The transmission mechanism drives the outer kettle of the rotary hook to rotate around the Y-axis direction. The transmission mechanism has a rotary hook seat, bearings and transmission parts. The piercing part inside the outer kettle, and the accommodation space is formed between the piercing part and the outer kettle, and the bearing is located in the accommodation space. In addition, the transmission part is connected to the outside of the outer kettle, so that the transmission part, the bearing and the piercing part They are arranged sequentially from the outside to the outside of the inner and outer kettles towards the inside of the outer kettle, so that the assembly state of the hook seat, bearings, outer kettle and transmission parts can make the volume of the end of the lower tube seat shrink along the Y direction, and then The zigzag sewing machine can be used to sew the hemming of the shoe mouth for shoes with a small size.

Description

technical field [0001] The invention relates to a zigzag sewing machine which can produce zigzag stitches through the reciprocating swing of machine needles perpendicular to the feeding direction, in particular to a cylindrical zigzag sewing machine which can sew small size shoe models. Background technique [0002] The sewing machine is mainly to combine several layers of sewing materials with each other through sewing, and, with the continuous evolution of technology, there are many styles of sewing machines on the market, and different styles of sewing machines can be applied to different cars. The sewing operation of sewing things, wherein, there is a zigzag sewing machine that can produce zigzag stitches by swinging machine needles on the surface of shoes, bags or cylinders. [0003] see figure 1 and figure 2 As shown, the existing zigzag sewing machine 1 has a headstock 10 and a pillar 11. The bottom of the pillar 11 extends along the X-axis direction to form a lowe...

AI Technical Summary

Problems solved by technology

[0005] However, when the second pulley 122b of the transmission mechanism 122, the ball bearing 122e of the transmission mechanism 122, and the rotary hook 13 are assembled together, the ball bearing 122e and the second pulley 122b are arranged in the Y-axis direction of the rotary hook 13 in sequence, so that The ball bearing 122e, the second pulley 122b and the rotary hook 13 are arranged in series along the Y-axis direction, and the Y-axis direction of the lower tube base 12 must have sufficient front and rear lengths to accommodate the ball bearing 122e and the second pulley at the same time. 122b and rotary hook 13, resulting in the large front and rear length of the lower pipe seat 12, the existing zigzag sewing machine 1 cannot perform the sewing operation of shoe mouth hemming for smaller shoe models.

Images