Presser foot independent driving mechanism for embroidery machine

Abstract

The invention discloses a presser foot independent driving mechanism for an embroidery machine, which comprises a main driving shaft, a presser foot cam and a presser foot rod. The main driving shaft is horizontally installed on the embroidery machine and is driven by a driving device to rotate; the presser foot cam is arranged in a nose of the embroidery machine, sleeved on the driving main shaft and connected with a rocker, and the rocker is movably connected with a presser foot driving slider through a small connecting rod; and the presser foot rod is arranged on the nose of the embroiderymachine, the top of the presser foot rod is fixedly sleeved with a connecting base with two hole positions, a needle rod is sleeved in the other hole position of the connecting base, a needle rod joint is arranged at the top of the needle rod, a spring is sleeved outside the needle rod and is arranged between the connecting base and the needle rod joint; a presser foot is arranged at the lower part of the presser foot rod, and the presser foot driving slider is connected with the bottom surface of the connecting base on the presser foot rod in a separable way. The invention has reasonable structure, is convenient for embroiling thick materials, can improve embroidery quality and prolong the service life of the whole embroidery machine. The presser foot independent driving mechanism can bewidely applied to embroidery machines.

Description

technical field [0001] The invention relates to an embroidery machine, in particular to an independent drive mechanism for the presser foot of the embroidery machine. Background technique [0002] The presser foot of the existing embroidery machine is driven by the needle bar through the presser foot spring to press the presser foot on the cloth, so that when the needle bar retracts, the upper thread forms a thread loop at the needle nose of the machine needle, and the hook tip hooks this After the thread loop rotates once, it catches the bottom thread, and then the upper thread is tightened, and the embroidery machine completes the most basic piercing action, producing a stitch on the fabric. Due to the small spring force of the presser foot, this kind of embroidery machine is generally only suitable for embroidering thin materials. When embroidering thick materials, the presser foot cannot press the fabric, and when the needle bar is retracted, a thread loop cannot be for...

AI Technical Summary

Problems solved by technology

The bottom thread and the upper thread cannot be fastened together, resulting in missing stitches, skipped stitches and other flaws in the stitches, resulting in long embroidery time and poor embroidery quality

If the elastic force of the presser foot spring is increased, the practice proves that the needle bar driving mechanism at this time will wear out rapidly due to excessive load, and the noise will also increase accordingly, and the service life will be greatly shortened, which has reached the point of being impractical.

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