Magnetic guide synchronous type sewing machine feeding mechanism and using method thereof

Abstract

The invention discloses a magnetic guide synchronous type sewing machine feeding mechanism and a using method thereof, and belongs to the field of sewing machines. An elastically connected material pressing plate is arranged below an existing presser foot body, a magnetic feed dog is used for attracting out the material pressing plate to press cloth, and when the feed dog moves forwards, the material pressing plate synchronously pushes cloth forwards along with the feed dog under the action of magnetic attraction, so that dislocation of the upper layer and the lower layer of smooth cloth is effectively reduced; meanwhile, the contact area of the cloth and the material pressing plate is reduced through a rolling cylinder on the material pressing plate, and friction resistance of the upper layer of cloth is reduced; when the feed dog feeds the cloth forwards, the rolling cylinder is driven to roll on the upper-layer cloth to achieve the effect of pushing the cloth forwards, so that the synchronous feeding effect is effectively improved; and in addition, an elastic pressing plate further presses the cloth downwards through the magnetic attraction effect to compensate for the defect of insufficient pressing force, and an elastic connecting rod can limit excessive pressing of the elastic pressing plate to prevent the pressing force from being too large.

Description

technical field [0001] The invention relates to the field of sewing machines, and more specifically relates to a magnetic-attraction synchronous sewing machine feeding mechanism and a use method thereof. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. And it derived art forms such as hand-push embroidery and computer embroidery. Generally, sewing machines are composed of four parts: machine head, machine base, transmission and accessories. The machine head is the main part of the sewing machine. It is composed of four mechanisms of stabbing, hooking, thread taking, and feeding, and auxiliary mechanisms such as winding, pressing, and falling teeth. The movements of eac...

AI Technical Summary

Problems solved by technology

[0004] Most of the current feeding mechanisms have defects. For example, when sewing multi-layer fabrics, the upper and lower layers of the fabric are misaligned due to improper pressure of the presser foot and slack of the feed dog, resulting in wrinkling of the fabric after sewing, especially for smoother fabrics. , which greatly reduces the sewing quality

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