Unlock instant, AI-driven research and patent intelligence for your innovation.

A sewing machine feeding dog height adjustment mechanism

A technology of height adjustment mechanism and feeding dog, applied in the direction of cloth feeding mechanism, sewing machine components, sewing machine control devices, etc., can solve the problems of inability to adjust the cloth, inconvenient use, etc., and achieve the effect of good operation experience and highly flexible and adjustable

Active Publication Date: 2022-07-05
JACK SEWING MASCH CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the height of the feed dog of the existing machine is fixed and cannot be adjusted according to the thickness of the fabric, two or more sewing machines are usually required to operate in the general sewing process, which is very inconvenient to use

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A sewing machine feeding dog height adjustment mechanism
  • A sewing machine feeding dog height adjustment mechanism
  • A sewing machine feeding dog height adjustment mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] like figure 2 and Figure 4 As shown, the driving device 7 adopts a rotary driving device, such as a rotary air cylinder or a stepping motor and other existing driving devices. The output shaft of the rotary drive device can be directly connected with the eccentric shaft 55 , or can be connected with the eccentric shaft 55 through the transmission mechanism 4 to drive the eccentric shaft 55 to rotate. A preferred transmission mechanism 4 in this embodiment includes a first connecting plate 41, a second connecting plate 42 and an eccentric shaft connecting handle 43. One end of the first connecting plate 41 is fixedly connected to the output shaft 72 of the rotary drive device, and the other end is connected to the output shaft 72 of the rotary drive device. One end of the second connecting plate 42 is rotatably connected. The other end of the second connecting plate 42 is rotatably connected with the eccentric shaft connecting handle 43 . The eccentric shaft connect...

Embodiment 2

[0060] like Figure 5 As shown, the drive device 7 is a linear drive device, and existing drive devices such as a linear motor or a linear cylinder can be used. The transmission mechanism 4 includes a first connecting plate 41 and an eccentric shaft connecting handle 43. One end of the first connecting plate 41 is rotatably connected to the output shaft 72 of the linear drive device, and the other end is rotatably connected to the eccentric shaft connecting handle 43, and the eccentric shaft is connected to the handle 43. It is fixedly connected with the eccentric shaft 55 .

[0061] When the thickness detection device detects a change in the thickness of the cloth, the controller controls the linear drive device to work according to the thickness of the cloth detected by the thickness detection device. The linear drive device extends or retracts the output shaft 72 and drives the eccentric shaft 55 to rotate through the transmission mechanism 4 , to realize the height adjust...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a height adjustment mechanism for a feed dog of a sewing machine, which includes a tooth lift shaft, a tooth lift fork-shaped crank, a tooth frame and a feed dog fixed on the tooth frame. One end of the tooth frame is provided with a tooth lift slider. The tooth-lifting slider is slidably connected with the fork groove of the tooth-lifting fork-shaped crank, and one end of the tooth holder is connected with the tooth-lifting slider by an eccentric shaft; a drive device is installed on the tooth holder, and the drive device It is connected with the eccentric shaft and can drive the eccentric shaft to rotate. To sum up, the advantages of the present invention are that the height of the feeding dog can be flexibly adjusted through the arrangement of the eccentric shaft, the tooth frame and the tooth-lifting slider, and only one machine can be used to sew thick and thin materials, avoiding the need for To avoid the trouble of repeatedly replacing different models, it can provide users with a better operating experience.

Description

technical field [0001] The invention relates to the technical field of sewing machines, in particular to a feeding structure of a sewing machine. Background technique [0002] During the sewing process of the sewing machine, due to different types of fabrics and different thicknesses, different heights of feed dogs need to be set in the process of conveying fabrics of different thicknesses. Feed dog for thin material, which can provide stronger feeding capacity. For example, the lockstitch machine is divided into two models for thin materials and thick materials. One of the main differences between the two models is that the height of the feeding teeth exposed to the needle plate is different. [0003] Since the height of the feed dog of the existing machine is fixed and cannot be self-adjusted according to the thickness of the fabric, two or more sewing machines are usually required to operate in the general sewing process, which is very inconvenient to use. SUMMARY OF T...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D05B27/24D05B69/10D05B69/02
CPCD05B27/24D05B69/10D05B69/02
Inventor 沈剑青管建平洪志敏林晓晓
Owner JACK SEWING MASCH CO LTD