Needle-bar-rotating pattern sewing machine

Abstract

The invention disclosed a needle-bar-rotating pattern sewing machine, which comprises a needle bar, a needle bar rotating mechanism and a needle bar up-and-down movement mechanism, wherein the needle bar rotating mechanism comprises a needle bar sheath; the needle bar moves up and down relative to the needle bar sheath; an axial thread inlet is arranged at the top of an axial thread hole formed in the hollow part of the needle bar; and a thread outlet is arranged at the lower end of the axial thread hole. As the needle bar up and down motion mechanism drives the needle bar into up-and-down movement to conduct stitching action, the needle bar rotating mechanism drives the needle bar to rotate; through regulating sewing stitches and directions, the changes of patterns and design directions are adaptive, and stitch esthetic appearance is ensured; and as the yarn passes through the axial thread hole of the needle bar, the phenomenon of twisted threads does not occur during the process of rotation of the needle bar. Therefore, the needle-bar-rotating pattern sewing machine provided by the invention has the beneficial effect that by replacing the way of large-volume machine head rotation with thin and small-volume needle bar rotation, stitches can be formed along the tangential direction of designs and patterns in sewing, the rotation inertia is reduced, the vibration is reduced, the rotation speed is improved, and the motor power is greatly reduced.

Description

technical field [0001] The invention relates to the technology in the field of sewing machines, in particular to a needle bar rotary pattern sewing machine with simple and compact structure and reasonable and convenient use. 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, hemp, wool, and artificial fibers, and products such as leather, plastics, and paper. The stitches embroidered are neat and beautiful, smooth and firm, and the sewing speed is fast and easy to use. Electronic pattern sewing machine is a high-end type of sewing machine. It uses the vertical and horizontal feeding mechanism to drive the cloth pressing device of the machine, thereby driving the cloth movement. The motor drives the synchronous belt to run through the clutch or similar device. The synchr...

AI Technical Summary

Problems solved by technology

In this way, on the one hand, the power of the motor driving the machine head is relatively large, which is extremely energy-consuming; on the other hand, the rotation of the machine head requires a complex transmission mechanism, which also wears a lot on the transmission mechanism and affects the service life of the product; Furthermore, the large machine head also increases the weight and volume of the rotating part of the sewing machine, increases vibration, and takes up too much space resources, which is not conducive to the miniaturization of the sewing machine.

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