Sewing machine with novel thread shifting device
A sewing machine and a new type of technology, applied in the field of sewing machines, can solve the problems of inflexible adjustment of the installation position, inability to adjust and control the movement stroke, unstable thread hooking, etc., and achieve the effects of superior performance, perfect structure and stable thread hooking.
Active Publication Date: 2015-09-09
JACK SEWING MASCH CO LTD
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Problems solved by technology
[0002] Due to the simple structure of the existing wire pulling device, the installation position cannot be adjusted flexibly and the movement stroke cannot be adjusted and controlled. As a result, after a long period of operation, the wire pulling device is prone to reset jamming and unstable hooking.
Method used
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[0021] The present invention will be further described below with specific embodiment, see figure 1 -5:
[0022] A sewing machine with a new thread pulling device, the thread pulling device includes a driving device, the output shaft 1 of the driving device is arranged in the mounting hole of the crank one 2 and fixed by screws, the crank one 2 is connected to the crank two through the connecting rod 3 4. Wherein, the two ends of the connecting rod 3 are respectively connected with the crank one 2 and the crank two 4 through the shaft position pin and the snap ring. A sleeve 6 is arranged on the mounting plate 5, and a pin shaft 7 is arranged in the sleeve 6, and the two ends of the pin shaft 7 are respectively arranged in the mounting holes of the crank two 4 and the crank three 8, and are fixed by screws, and the crank two 4 And crank three 8 are positioned at the both sides of mounting plate 5 respectively. Crank 3 8 is provided with hook knife bar 9, hook line sheet 10 ...
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The invention belongs to the technical field of sewing machines, and particularly relates to a sewing machine with a novel thread shifting device. The thread shifting device comprises a driving device, wherein an output shaft of the driving device is connected with a first crank, the first crank is connected with a second crank through a connecting rod, the second crank is connected with a third crank, and one end of the second crank and one end of the third crank are arranged on an installation plate; a drawing cutter rod is arranged on the third crank, a thread drawing sheet is arranged at the lower end of the drawing cutter rod, a rotating pin is installed outside the drawing cutter rod in a sleeving mode and arranged on the installation plate, and a strip-shaped hole for stroke adjustment is formed in the installation plate. According to the sewing machine, the strip-shaped hole is formed in the installation plate, and therefore the movement stroke can be conveniently adjusted; strip-shaped holes formed in a first fixing plate and a second fixing plate are used for adjusting the front-and-rear position and the left-and-right position, and therefore the installation position of the thread shifting device can be flexibly adjusted, the performance is greatly improved, thread drawing is stable, and the phenomenon of reset clamping cannot happen after the sewing machine is used for a long time.
Description
Technical field: [0001] The invention belongs to the technical field of sewing machines, in particular to a sewing machine with a novel thread pulling device. Background technique: [0002] Due to the simple structure of the existing wire pulling device, the installation position cannot be flexibly adjusted and the movement stroke cannot be adjusted and controlled. As a result, after a long period of operation, the wire pulling device is prone to reset jamming and unstable wire hooking. Invention content: [0003] The object of the present invention is to provide a sewing machine with a novel thread pulling device with adjustable movement stroke, superior performance and more stable thread hooking. [0004] The present invention is achieved like this: [0005] A sewing machine with a novel thread pulling device, the thread pulling device includes a driving device, the output shaft of the driving device is connected to crank one, crank one is connected to crank two through...
Claims
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IPC IPC(8): D05B53/00D05B69/02
Inventor 潘宝国王志李卫超洪建敏
Owner JACK SEWING MASCH CO LTD