Thread trimming and presser foot lifting device for sewing machine

A presser foot lifter and sewing machine technology, which is applied in the field of garment manufacturing equipment, can solve the problems that the thread trimming mechanism is not suitable for long-distance transmission, cannot be used for common knee presser foot lifter devices, and the power transmission distance of presser foot lifter is long, etc. High seam breakage rate, small structural changes, and wide applicability
CN109487454BActive Publication Date: 2020-11-13ANHUI JIEYU SHOEMAKING MACHINERY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI JIEYU SHOEMAKING MACHINERY TECH CO LTD
Publication Date
2020-11-13

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Abstract

The invention provides a thread-cutting presser foot lifter for sewing machinery, belongs to the technical field of clothing manufacture equipment and solves the technical problems that, for instance,a thread-cutting presser foot lifter of existing sewing machinery has poor applicability. A screwing machine comprises a bottom plate, a presser foot rod arranged above the bottom plate and a presserfoot fixedly connected to the lower end of the presser foot rod; a thread cutting mechanism is also arranged right below the presser foot at the bottom of the bottom plate. The thread-cutting presserfoot lifter comprises a driving motor fixed to the bottom of the bottom plate and having two output shafts; the output shaft at one end of the driving motor is fixedly connected with a presser foot lift cam; a linkage is arranged above the bottom plate; the presser foot lift cam can drive the presser foot rod to rise through the linkage; the output shaft at the other end of the driving motor is fixedly connected with a thread-cutting cam; the thread-cutting cam can drive the thread cutting mechanism to do cutting motion. The thread-cutting presser foot lifter herein is widely applicable and reliable in performance.
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Description

technical field

[0001] The invention belongs to the technical field of garment manufacturing equipment, and relates to a sewing machine, in particular to a thread trimmer and presser foot lifting device of the sewing machine. 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. Sewing machines are generally composed of four parts: feeding device, machine base, transmission and accessories. The movement of each mechanism is reasonably coordinated, and the cycle works to sew the sewing materials together. During the sewing process, the sewing machine will use the functions of automatic thread trimmer and automatic presser foot lifter; currently, sewing machines on the market ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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