Coreless sewing machine rotary hook bottom thread winding machine

Abstract

The invention discloses a bottom line winding machine for a rotating shuttle of a coreless sewing machine. The bottom line winding machine comprises a bottom plate, on which a winding mechanism is arranged. The winding mechanism is connected with a power mechanism and further comprises a pair of winding shafts connected coaxially in a clutch mode. Two winding shafts are arranged on a moving and swinging mechanism enabling the winding shafts to synchronously draw close or synchronously separate from each other. Each winding shaft is conical. When the two winding shafts are opposed from each other and are connected in an abutting mode, a shaft rod, having a thin middle part and two increasingly thicker sides, is formed. The bottom line winding machine for the rotating shuttle of the coreless sewing machine has following beneficial effects: winding operation is performed on the splicing shaft rod having a thin middle part and two increasingly thicker sides without support of a shuttle core; and after winding operation, the two winding shafts are well separated from line coils of coreless bottom lines by aid of the moving and swinging mechanism in order to well guarantee winding tightness of line coils of coreless bottom lines, thereby ensuring high capacity.

Description

technical field [0001] The invention relates to the technical field of winding machines, in particular to a coreless sewing machine rotary hook bottom thread winding machine. Background technique [0002] The bobbin thread winding machine for industrial sewing machines, as described in patent CN201320549764.7, includes a bottom plate, a wheel rocker arm mounted on the bottom plate, a stopper arranged on the bottom plate at the lower side of the driving wheel, and the base plate and the driving wheel rotating arm are arranged together. There is the rocking arm strut of contact piece, the guide wheel frame that is fixed on the bottom plate in front of the rocking arm of the above-mentioned driving wheel, and the guide wheel frame is provided with guide wheels; Such winding machines are often used for bobbins with I-shaped bobbins. [0003] The applicant has previously developed a coreless sewing machine rotary hook, the application number is 201310698691.2. The center tap of ...

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Problems solved by technology

[0004] However, at present, there are relatively few bottom threads in the domestic market that match the center tap of the thread ball of this coreless sewing machine hook (some are relatively loose, and the storage capacity is discounted), although ordinary thread balls can also be competent, but ordinary Thread balls appear in the process of use, constantly rolling in the rotary hook, the stability is too poor, and so on, the space for the applicant's coreless sewing machine rotary hook is limited, and the applicant urgently needs to develop a coreless sewing machine. Sewing machine rotary hook bottom thread winding machine

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