A kind of sewing machine to go to the bird's nest and quickly change the knife with a knife presser foot

A sewing machine and presser foot technology, applied in the field of sewing machines, can solve the problems of missing stitches, increase defective products, troublesome replacement, etc., and achieve the effects of ensuring sewing performance, short residual thread ends, and beautiful stitches

Active Publication Date: 2019-02-22
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure replaces the original thread retaining arc end of the presser foot and the thread-off groove below it. When sewing thin materials and other soft sewing materials, the sewing material is easy to squeeze into the opened groove and damage the sewing. When sewing thicker or velvet sewing materials, the stitches will be squeezed into the knife edge, cutting off the stitches, affecting the quality of the sewing products and increasing the number of defective products
At the same time, there is also a blade groove on the side of this presser foot, and the blade is fixed in the blade groove by glue. It is very troublesome to replace the blade after it is damaged, and special tools are required for disassembly and assembly.

Method used

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  • A kind of sewing machine to go to the bird's nest and quickly change the knife with a knife presser foot
  • A kind of sewing machine to go to the bird's nest and quickly change the knife with a knife presser foot
  • A kind of sewing machine to go to the bird's nest and quickly change the knife with a knife presser foot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A sewing machine presser foot with a knife for quick tool change without bird's nest, including a presser handle 1 and a presser plate 2, a central thread groove 3 is arranged at the front of the presser plate 2, and the presser handle 1 is connected to the presser plate 2 through a screw 4 or a pin The two connecting parts 5 are hinged with the presser foot plate 2, and the presser foot plate 2 at the rear end of the central wire groove 3 is provided with a wire groove 6, the central wire groove 3 communicates with the wire groove 6, and the presser foot plate between the two connecting parts 5 A blade groove 7 is formed on the 2, the end of the wire passing groove 6 is located in the blade groove 7, and the blade 8 is arranged in the blade groove 7, and the blade 8 of the blade 8 is positioned above the wire passing groove 6. When installing blade 8 and changing blade 8, unscrew screw 4 or pin, pull down presser foot handle 1 and can realize quick tool change.

[0036...

Embodiment 2

[0043] The structure of this embodiment is basically the same as that of Embodiment 1, the difference being that a blade pressing plate 9 is provided between the blade 8 and the presser handle 1 . The specific structure is as follows:

[0044] A blade pressing plate 9 is arranged between the upper plane of the blade 8 and the bottom plane of the presser handle 1 , and the blade pressing plate 9 presses the blade 8 into the blade groove 7 .

[0045] The structure of the blade pressing plate 9 is that the two ends of the horizontal plate 14 are bent upwards to form a vertical portion 15, and an opening 16 is provided on the horizontal plate 14 corresponding to the position of the blade, and an opening 16 is provided on the vertical portion 15 to facilitate the screw 4 to pass through. through vias. The screw 4 fixes the blade pressing plate 9 through the through hole, so that the blade pressing plate 9 presses the blade 8 .

[0046] In order to have a better positioning effect...

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PUM

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Abstract

The invention belongs to the technical field of sewing machines, and particularly relates to a bird nest removing quick blade replacing blade-attached presser foot for a sewing machine. The presser foot comprises a presser foot handle and a presser foot plate, wherein a central line groove is formed in the front part of the presser foot plate; the presser foot handle is hinged to two connecting parts on the presser foot plate; a threading groove is formed in the presser foot plate at the back end of the central line groove; the central line groove is communicated with the threading groove; a blade groove is formed in the presser foot plate between the two connecting parts; the tail end of the threading groove is positioned in the blade groove; a blade is arranged in the blade groove; a cutting edge of the blade is positioned above the threading groove. A blade pressing plate is adopted to press the blade to be fixed in the blade groove of the presser foot, the presser foot handle and the presser foot plate are fixedly hinged by a screw, certain pressure is kept on the blade by the blade pressing plate to fix the blade, the quick blade replacing can be realized by screwing off the screw and dismounting the presser foot handle and the blade pressing plate, special articles of glue, special dismounting tools and the like are not needed, and the dismounting is convenient.

Description

Technical field: [0001] The invention belongs to the technical field of sewing machines, in particular to a sewing machine fast knife changing presser foot with a knife for bird's nest removal. Background technique: [0002] When the sewing machine sews cloth, a certain length of thread ends must be left at the eye of the machine needle when sewing is started, so as to ensure that the end of thread will not slip out of the eye of the machine needle when sewing starts. A certain length of thread on the eye of the machine needle will stay at the initial position of the fabric when sewing to form a "bird's nest", which affects the appearance of the sewing material. [0003] In order to remove the bird's nest, the processing method generally used at present is to manually pull the end of the thread when sewing, so that the end of the thread is left on the sewing material, and after the sewing work, the end of the thread is manually processed. [0004] The presser foot base plat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B29/06D05B29/12D05B65/00
CPCD05B29/06D05B29/12D05B65/00
Inventor 万义明管建平林晓晓
Owner JACK SEWING MASCH CO LTD
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