Sewing machine shuttle for continuously feeding ground thread

Abstract

The invention relates to a sewing machine spindle head which can continuously supply underlines. The spindle head comprises a ring rotating shuttle and a ring fixed shuttle which is arranged in the rotating shuttle; the rotating shuttle is connected with a shuttle shaft; the outer edge of the fixed shuffle is provided with a positioning gap; the side of the positioning gap is provided with an underline outlet; the fixed shuffle is an open looped ring-shaped fixed shuffle; the shuffle shaft is a tubular hollow shuffle shaft; the hollow shuffle is internally sleeved with an underline tube, the axis of which is collinear with the axis of the shuffle shaft; the outer end of the underline tube extends out of the shuffle shaft; one section of the underline tube which is arranged outside the shuffle shaft is a bend pipe section; the inner end of the underline tube extends into the ring of the fixed shuffler; the inner end of the underline tube is connected with an underline curved needle which is provided with a threading hole; the threading hole arranged at the pinpoint of the underline curved needle is arranged near the underline outlet of the fixed shuffle outer edge. The underlines of the invention is led in and supplied from the spindle head; the spindle head can continuously and reliably supply underlines; when in use, the underlines are not polluted by engine oil, and are not blocked and intertwined.

Description

technical field [0001] The invention relates to a sewing machine shuttle head, in particular to a hook shaft, a fixed shuttle and a bottom thread looper of the sewing machine shuttle head. Background technique [0002] The sewing machine shuttle head is a part of the sewing machine for the bottom thread. The hook head of the sewing machine has a ring-shaped rotary hook and a ring-shaped fixed shuttle inside the rotary hook. The rotary hook is connected with a shuttle shaft. The bottom thread of the sewing machine is wound on the bottom thread shaft, the bottom thread shaft is installed in the shuttle, and the bobbin equipped with the bottom thread shaft is embedded in the fixed shuttle. Pull out the bobbin thread outlet through the outer edge of the fixed shuttle to supply the bobbin thread for sewing. The bobbin thread inside the sewing machine hook is wound on the bobbin thread shaft. The bobbin thread bobbin is small, and there is less bobbin thread wound. When using it,...

AI Technical Summary

Problems solved by technology

The bottom thread of this sewing machine bottom thread device is introduced outside the shuttle head for thread supply. When in use, the bottom thread is easily polluted by engine oil or the bottom thread is blocked and entangled, which affects product quality and continuous bottom thread supply.

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