Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sewing machine

A technology for sewing machines and objects to be sewn, applied in the field of sewing machines, can solve problems such as difficulty in evenly tightening stitches and inability to obtain beautiful stitches, so as to improve sewing efficiency, beautiful stitches, and prevent knotted needles trace effect

Inactive Publication Date: 2009-03-04
JUKI CORP
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This knotting stitch has the following problem: when the thread is tied by the lifting of the scale, it is difficult to tighten the stitches evenly because the binding force is concentrated on the previous stitches, and a beautiful stitch cannot be obtained.

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
  • Sewing machine
  • Sewing machine
  • Sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The following reference Figure 1 to Figure 6 Specific embodiments for carrying out the present invention will be described in detail. In addition, in this embodiment, the direction of each part of the sewing machine 1 is determined based on the XYZ axes shown in each figure. In the state where the sewing machine 1 is installed on a horizontal surface, the Z-axis direction represents the vertical direction, the Y-axis direction represents the left-right direction that coincides with the longitudinal direction of the sewing machine arm 11, and the X-axis direction represents the horizontal direction that is parallel to the Y-axis direction. The direction is orthogonal to the front-back direction.

[0027] (the whole frame)

[0028] (sewing frame)

[0029] Such as figure 1 As shown, the sewing machine frame 10 consists of a sewing machine arm 11 extending along the longitudinal direction (Y-axis direction) of the sewing machine table, a sewing machine base 12 opposit...

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 sewing machine which applies a proper thread tensile force no mater what the cloth feeding direction is. A feeding switching detection sensor (46) is set to detecting whether the cloth feeding direction switches from forward to backward by the operation of the returning operation bar (45). The controlling unit (100) works according to the detection signal from the feeding switching detection sensor (46) and a touch auxiliary switch (47), while the feeding direction is detected to switched from forward to backward, the controlling unit (100) reduces the thread tensile force automatically by a thread adjusting solenoid (53); Thus, knotted stitch is prevented from being created in backward feeding switching. Consequently, pretty stitches can be achieved.

Description

technical field [0001] The present invention relates to a sewing machine provided with a thread adjusting device which makes the tension of the thread variable by electric control. Background technique [0002] Currently, as described in Patent Document 1, for example, there is known a sewing machine provided with a thread adjusting device for setting the tension of the needle thread supplied to the sewing needle through electrical control. [0003] And, the upper thread supplied from the upper thread supply source outside the sewing machine passes through the thread guide part, thread adjuster, balance, needle bar and sewing needle provided on the arm of the sewing machine, and is sewn onto the cloth. [0004] In addition, for example, it is desired to set an appropriate tension of the upper thread according to the thickness of the thread or the type of stitch pattern, or the sewing stage (when sewing is stopped, when the thread is trimmed, etc.), the above-mentioned thread...

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
IPC IPC(8): D05B47/04
Inventor 绪方孝宏
Owner JUKI CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com