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

sewing machine

A technology of sewing machine and thread path, which is applied in the field of sewing machines, and can solve problems such as the inability of hooking part to catch and pull the upper thread, insufficient coil supply, and insufficient margin for upper thread slack.

Active Publication Date: 2021-01-15
JANOME CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the case of manual operation of the flywheel, the hooking part cannot catch and pull the upper thread in the first needle actuation cycle, and there is not enough slack for the upper thread. Pulling up, the supply of a considerable amount of coil is insufficient, and the hook tip cannot catch the upper thread
That is, there is still the possibility of skipped stitches in the operation cycle of the first stitch

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

[0112] (The overall configuration of the sewing machine)

[0113] The sewing machine 1 shown in FIG. 1( a ) and FIG. 1( b ) stitches the cloth 100 by dropping the needle 3 onto the cloth 100 placed on the needle plate 21 and interweaving the upper thread 200 and the lower thread 300 to form stitches. Household, professional or industrial apparatus for sewing. The upper thread 200 is inserted through the needle 3 through the thread channel 4 , and then pressed against the bottom of the presser foot 22 , and the user draws an arbitrary amount from the presser foot 22 .

[0114] The sewing machine 1 has a needle bar 31 and a shuttle 5 . The needle bar 31 extends vertically toward the needle plate 21, and is mounted reciprocally movable in the extending direction. The needle bar 31 supports the needle 3 at the front end on the needle plate 21 side. The shuttle 5 has a hollow drum shape with a planar opening, is installed horizontally or vertically with respect to the needle pla...

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

An object of the present invention is to prevent the occurrence of skipped stitches in the operation cycle of the first needle in a sewing machine provided with a balance that traverses the needle thread and catches and pulls the needle thread. The sewing machine (1) is provided with a balance (7) which performs a reciprocating motion and traverses the thread path (4) on the way forward and catches and pulls the thread (200). In addition, a thread take-up spring (816) is provided which changes the thread path (4) of the upper thread (200) in conjunction with the slack of the upper thread (200). The thread take-up spring (816) is not linked to the slack of the upper thread (200) during the reciprocating motion of the first needle (3), and does not pull up the needle (200), and after the second needle (3) The upper thread (200) is pulled up in conjunction with the slack of the thread (200) during the reciprocating motion of the thread.

Description

technical field [0001] The present invention relates to a sewing machine including a balance that moves a thread catcher so as to cross a needle thread, and catches and pulls the thread catcher by the thread catcher. Background technique [0002] A sewing machine forms a stitch by forming an upper thread into a loop and inserting the lower thread through the loop of the upper thread to interweave the upper thread and the lower thread. The upper thread is inserted into the needle from the bobbin, and the lower thread is stored in the shuttle with the tip. The loop is formed by raising the needle with the upper thread from the bottom dead center. The hook tip of the shuttle catches the loop, and the hook rotates while the loop is caught, and the bobbin passes the upper thread, whereby the upper thread and the lower thread intertwine. [0003] In a device called a horizontal balance, the hooking part reciprocates so as to traverse the upper line (for example, refer to Patent ...

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): D05B47/04D05B51/00D05B53/00
CPCD05B47/04D05B51/00D05B53/00D05D2305/32
Inventor 白土宏树
Owner JANOME CORP