Tension device of sewing machine

Abstract

The invention relates to a clipping device of sewing machine that is set beside the pin. Driving component is set on the main seat, arm driving interlock component to move the clipping line component between the guiding base and guiding sheet. The clipping sheet would use the indenting tool to adjust clamping elasticity. It would not cause blank sewing.

Description

technical field [0001] The invention relates to a hook and clamp device for sewing machines, especially a device for assisting the hook and clamp sewing thread of a sewing machine that can be made up and down. Hook the sewing thread into the clip between the upper guide piece and the guide seat, and clamp the sewing thread at the limit to facilitate the netting sewing. Background technique [0002] Generally seen three car sewing machine (such as Figures 10 to 12 As shown), three needles 71 are fixed under the upper and lower needle holders 7 to pass through the sewing thread 711, so that the sewing can be done like this Figure 13 The sewing method shown is a sewing method with three stitches from the bottom to the top (commonly known as the chain stitch method); and in order to make the operation more rapid and automatic, a lower thread trimming device 75 will be installed under the working platform to make three stitches. The stitching thread 711 can achieve the purpose...

AI Technical Summary

Problems solved by technology

[0003] But although this upper hook thread device 74 can make the next sewing without residual thread ends, there is still a small deficiency in use, because the hook piece 741 of the upper hook thread device 74 utilizes its reed 742 to clamp the cut car. During sewing thread 711, have considerable distance from car needle 71 [as Figure 15 As shown in L], the remaining thread ends 710 are only about 4 to 5 mm left at the clamping end; when the needle 71 pierces the fabric downwards to make the netting, the remaining thread ends 710 will quickly break away from the clamping end However, due to natural fall, when sewing, the hooker under the working platform cannot be hooked and formed, resulting in three to four needles, or even more than four needles.

Images