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A tooth-lifting shaft assembly and a sewing machine with the tooth-lifting shaft assembly

A technology of tooth shafts and components, which is applied to sewing machine components, sewing instruments, cloth feeding mechanisms, etc., can solve the problems of complex adjustment of tooth height and inability to precisely control it.

Active Publication Date: 2021-06-29
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now conventional sewing machines are complex to adjust the tooth height, and cannot be precisely controlled

Method used

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  • A tooth-lifting shaft assembly and a sewing machine with the tooth-lifting shaft assembly
  • A tooth-lifting shaft assembly and a sewing machine with the tooth-lifting shaft assembly
  • A tooth-lifting shaft assembly and a sewing machine with the tooth-lifting shaft assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A tooth lifting shaft assembly provided by an embodiment of the present invention, as shown in the attached figure 1 To attach Figure 4 , comprising a front tooth shaft 12 and a rear tooth shaft 18, the front tooth shaft 12 and the rear tooth shaft 18 are arranged in parallel. One end of the feeding shaft 6 is fixedly connected with the feeding assembly 3 , and the other end of the feeding shaft 6 is fixedly connected with the feeding swing board assembly 5 .

[0038] The feeding assembly 3 is used to control the motion track of the feeding tooth 32, the tooth lifting shaft assembly 4 is used to complete the tooth lifting phase adjustment, and the feeding swing plate base assembly 5 completes the feeding phase change. The key improvement part of this application is the tooth lifting shaft assembly 4.

[0039] Known with reference to the prior art, the feeding eccentric wheel 8 is fixed on the upper shaft 1, one end of the tooth lifting connecting rod 9 is rotatably c...

Embodiment 2

[0071] Different from the first embodiment above, the driving part 2 can directly adjust the eccentric wheel 301 to realize the change of the included angle between the front crank 14 and the rear crank 16; specifically, the output shaft of the driving part 2 is fixed It is arranged in the eccentric hole of the adjusting eccentric wheel 301 , and the end of the tooth lifting adjusting swing link 24 is connected to the adjusting eccentric wheel 301 .

[0072] When the drive part 2 moves, the output shaft of the drive part 2 rotates, driving the adjustment eccentric wheel 301 to rotate. Since the eccentric hole of the adjustment eccentric wheel 301 is fixedly connected with the output shaft of the drive part 2, when the adjustment eccentric wheel 301 rotates, the adjustment The side edge of the eccentric wheel 301 does not rotate around a fixed axis, but swings, thereby driving the tooth-lifting adjustment swing link 24 to swing, thereby changing the angle between the front tooth...

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Abstract

The invention discloses a tooth lifting shaft assembly and a sewing machine with the tooth lifting shaft assembly. The tooth lifting shaft assembly includes a front lifting tooth shaft and a rear tooth lifting shaft arranged in parallel, and the front lifting tooth shaft is fixed with a front lifting tooth shaft. crank, the rear tooth lifting shaft is fixed with a rear tooth lifting crank, the front tooth lifting crank is rotatably connected to the first end of the front tooth lifting oscillating plate, and the rear tooth lifting crank is rotatably connected to the first end of the rear tooth lifting oscillating plate. end, the second end of the front teeth lifting swing plate and the second end of the rear teeth lifting swing plate are respectively connected to one end of the drive device in rotation; after being driven by the drive device, the front teeth lift crank The included angle between the crank and the rear lifting tooth crank is changed, so that the front lifting tooth shaft and the rear lifting tooth shaft are relatively rotated to adjust the height of the feed dog. The tooth lifting shaft assembly mentioned above can conveniently and quickly control the height of the feed dog, and realize the automatic adjustment function of the tooth height of the feed dog.

Description

technical field [0001] The invention relates to the technical field of sewing equipment, in particular to a tooth lifting shaft assembly and a sewing machine with the tooth lifting shaft assembly. Background technique [0002] As everyone knows, 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 materials. The sewing machine usually consists of a feeding device, a machine base, The transmission and accessories are composed of four parts. Through the reasonable cooperation of the movements of each mechanism, the cycle works to sew the sewing materials together. [0003] In the prior art, for sewing machines, especially lockstitch machines, the horizontal movement direction of the feed dog is controlled by the feed shaft, the vertical movement direction of the feed dog is controlled by the tooth lifting shaft, and the phase between the horizontal direction and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B27/02
CPCD05B27/02
Inventor 黄明学万义明林晓晓洪志敏
Owner JACK SEWING MASCH CO LTD
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