CN114703607A - Control method for switching moving tracks of cloth feeding teeth of sewing machine in real time - Google Patents
Control method for switching moving tracks of cloth feeding teeth of sewing machine in real time Download PDFInfo
- Publication number
- CN114703607A CN114703607A CN202210220287.3A CN202210220287A CN114703607A CN 114703607 A CN114703607 A CN 114703607A CN 202210220287 A CN202210220287 A CN 202210220287A CN 114703607 A CN114703607 A CN 114703607A
- Authority
- CN
- China
- Prior art keywords
- rotation angle
- stepping motor
- theta
- main shaft
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 93
- 238000009958 sewing Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000035772 mutation Effects 0.000 claims description 4
- 238000009499 grossing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
Abstract
The invention belongs to the technical field of sewing machines, in particular to a control method for switching the moving track of a cloth feeding tooth of a sewing machine in real time. According to the invention, the thickness of the cloth is detected in real time by virtue of the detection sensor, and the change of the rotation angle of the stepping motor or the main shaft is controlled by the control assembly, so that the switching of the moving track of the cloth feeding teeth is realized, and thus, the sewing machine can switch the moving track of the cloth feeding teeth in real time according to the thickness of the sewing fabric in the current stitch length forming process, and the phenomena of needle stacking, needle breaking and loose take-up are avoided in the current stitch length forming process.
Description
The technical field is as follows:
the invention belongs to the technical field of sewing machines, and particularly relates to a control method for switching the moving track of a cloth feeding tooth of a sewing machine in real time.
Background art:
in the sewing process without the electronic cloth feeding function of the common sewing machine, due to the fact that the front and back movement tracks and the up and down movement tracks of the cloth feeding teeth are fixed, when the fabric is thinned, the phenomena of needle stacking and needle breakage can easily occur. Therefore, when thick fabrics are sewn, a special thick material sewing machine is needed, but when the thick material sewing machine is used for sewing thin fabrics, the phenomenon of untight take-up can occur, so that the attractive appearance of stitches is influenced.
Therefore, in order to effectively solve the problems, the existing sewing machine has an electronic cloth feeding function so as to change the moving track of the cloth feeding teeth, namely when the fabric is thickened from thin to thick, the moving track of the cloth feeding teeth suitable for the thick fabric can be adopted, and the phenomena of needle piling and needle breakage are effectively improved; when the fabric is thinned from thick, the moving track of the cloth feeding teeth suitable for the thin fabric can be adopted, and the phenomenon of untight take-up is prevented.
However, the current cloth feeding tooth movement track switching cannot be performed in the process of forming the current stitch length, and can only be performed at the beginning of the next stitch length, so that the phenomena of needle stacking, needle breakage and loose take-up can be generated in the process of forming the current stitch length.
The invention content is as follows:
the invention aims to provide a control method for switching the moving track of a cloth feeding tooth of a sewing machine in real time, which can switch the moving track of the cloth feeding tooth in real time according to the thickness of a sewing fabric in the process of forming the current stitch length.
The invention is realized by the following steps:
a control method for switching the moving track of the cloth feeding teeth of a sewing machine in real time comprises a needle plate, a presser foot, the cloth feeding teeth and a control assembly, wherein the cloth feeding teeth are driven by a stepping motor to move back and forth and driven by a main shaft to move up and down, the control assembly also comprises a detection sensor for detecting the thickness of the sewn cloth, the detection sensor is electrically connected with the control assembly, a plurality of rotating angle relation curves of the stepping motor and the main shaft when sewing different cloth thicknesses are stored on the control assembly,
setting the rotation angle of the main shaft as theta a when the cloth feeding teeth move from bottom to top to be flush with the needle plate,
setting the rotation angle of the main shaft to be theta b when the cloth feeding teeth move from top to bottom to be flush with the needle plate;
the curve of the relationship between the rotating angle of the stepping motor with the cloth thickness of D0 and the main shaft is set to be C0,
setting a relation curve of a rotation angle between a stepping motor with the cloth thickness of D1 and the main shaft to be C1, wherein D0 is more than D1;
an intersection point M exists between C0 and C1, the rotation angle of a main shaft corresponding to the intersection point M is set to be theta C, and theta a is more than theta C and less than theta b;
the specific control mode comprises the following steps:
firstly, when the rotation angle of the main shaft is theta D and theta a is more than theta D and less than theta C, the cloth thickness is changed from D0 to D1, the rotation angle of the main shaft is controlled by the control assembly to be increased, and the increment is delta theta 1, so that the rotation angle relation curve of the stepping motor and the main shaft is switched from C0 to C1;
when the rotation angle of the spindle is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D0 to D1, the rotation angle of the stepping motor is controlled to be increased through the control assembly, and the increase is delta theta 2, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C0 to C1;
when the rotation angle of the spindle is thetad and thetaa is less than thetad and thetac, the cloth thickness is changed from D1 to D0, the rotation angle of the stepping motor is controlled by the control assembly to be increased, and the increment is delta theta 3, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C1 to C0;
and fourthly, when the rotation angle of the main shaft is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D1 to D0, the rotation angle of the main shaft is controlled by the control assembly to be increased by delta theta 4, and the rotation angle relation curve of the stepping motor and the main shaft is switched from C1 to C0.
In the control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time, the detection sensor is a position sensor, and the position sensor is arranged on the presser foot.
In the above control method for switching the moving track of the cloth feeding teeth of the sewing machine in real time,
in the first mode, the rotation angle of the stepping motor is not changed, and Δ θ 1 is the difference between the rotation angles of C1 and C0 on the spindle;
in the second mode, the rotation angle of the spindle is not changed, and Δ θ 2 is the difference between the rotation angles of the stepping motor and C1 and C0;
in the third mode, the rotation angle of the spindle is not changed, and Δ θ 3 is the difference between the rotation angles of the stepping motor and C1 and C0;
in the fourth mode, the rotation angle of the stepping motor is not changed, and Δ θ 4 is the difference between the rotation angles of C1 and C0 on the spindle.
In the control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time, when the curve is switched, the stepping motor has a response mutation, and the control assembly controls and reduces the rotation speed of the main shaft when the curve is switched.
In the control method for switching the moving track of the cloth feeding teeth of the sewing machine in real time, when the curve is switched, the stepping motor has a response mutation,
in the first mode, the control assembly further controls the rotation angle of the stepping motor to increase, and the increase amount is delta theta 5;
in the second mode, the control assembly further controls the rotation angle of the main shaft to increase, and the increase amount is delta theta 6;
in the third mode, the control assembly further controls the rotation angle of the main shaft to increase, and the increase amount is delta theta 7;
in the fourth mode, the control assembly further controls the rotation angle of the stepping motor to increase by Δ θ 8.
In the control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time, when the curve is switched, the response of the stepping motor has sudden change, the switching paths of C0 switching to C1 and C1 switching to C2 are in a linear relationship,
in the first mode, the linear slope k of the switching path is Δ θ 5/Δ θ 1;
in the second mode, the linear slope k of the switching path is Δ θ 6/Δ θ 2;
in the third mode, the linear slope k of the switching path is Δ θ 7/Δ θ 3;
in the fourth mode, the linear slope k of the switching path is Δ θ 8/Δ θ 4.
In the control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time, when the curve is switched, the response abrupt change exists in the stepping motor, and the switching paths of C0 switching to C1 and C1 switching to C2 are in a smooth curve relationship.
Compared with the prior art, the invention has the outstanding advantages that:
1. the invention detects the thickness of the cloth in real time by means of the detection sensor, and the control assembly controls the change of the rotation angle of the stepping motor or the main shaft to realize the switching of the moving track of the cloth feeding teeth, so that the sewing machine can switch the moving track of the cloth feeding teeth in real time according to the thickness of the sewing fabric in the current stitch length forming process, and the phenomena of needle stacking, needle breakage and untight take-up are avoided in the current stitch length forming process;
2. the invention improves the error influence caused by the response mutation of the stepping motor, and has high precision and stable and reliable operation by reducing the speed of the main shaft, changing the slope of the curve switching path, adopting the curve switching path subjected to curve smoothing and other methods.
Description of the drawings:
FIG. 1 is a first graph of a relationship between a stepping motor and a spindle rotation angle according to a first embodiment of the present invention;
FIG. 2 is a second graph illustrating a relationship between a rotation angle of a stepping motor and a spindle according to a first embodiment of the present invention;
FIG. 3 is a first graph of the relationship between the rotation angle of the stepping motor and the spindle according to the second embodiment of the present invention;
fig. 4 is a second graph of the relationship between the rotation angle of the stepping motor and the spindle according to the second embodiment of the present invention.
The specific implementation mode is as follows:
the invention will now be further described by way of specific examples, with reference to figures 1 to 4:
a control method for switching the moving track of cloth feeding teeth of sewing machine in real time comprises a needle plate, a presser foot, cloth feeding teeth and a control assembly, wherein the cloth feeding teeth are driven by a stepping motor to move back and forth and driven by a main shaft to move up and down, the control assembly is electrically connected with a detection sensor for detecting the thickness of the sewn cloth, the control assembly is stored with a plurality of rotating angle relation curves of the stepping motor and the main shaft when different thicknesses of cloth are sewn, wherein the rotating angle relation curve of the stepping motor and the main shaft is the moving track of the cloth feeding teeth, the detection sensor can adopt other common thickness measuring sensors on the market, and in the embodiment, the detection sensor is a position sensor which is arranged on the presser foot.
Setting the rotation angle of the main shaft as theta a when the cloth feeding teeth move from bottom to top to be flush with the needle plate,
setting the rotation angle of the main shaft to be theta b when the cloth feeding teeth move from top to bottom to be flush with the needle plate;
the difference value between theta a and theta b is an effective cloth feeding angle, and the height position and the front and rear positions of the cloth feeding teeth in the effective cloth feeding angle range determine the moving track of the cloth feeding teeth.
The curve of the relationship between the rotating angle of the stepping motor with the cloth thickness of D0 and the main shaft is set to be C0,
setting the relation curve of the rotation angle between the stepping motor with the cloth thickness of D1 and the main shaft to be C1, wherein D0 is more than D1;
an intersection point M exists between C0 and C1, the rotation angle of a main shaft corresponding to the intersection point M is set to be theta C, and theta a is more than theta C and less than theta b;
the first embodiment is as follows:
in this example, the stepping motor has no response abrupt change, and the specific control method adopted by the stepping motor comprises the following steps:
when the rotation angle of the spindle is thetad and thetaa is less than thetad and is less than thetac, the cloth thickness is changed from D0 to D1, the rotation angle of the spindle is controlled by the control assembly to be increased, the increment is delta theta 1, meanwhile, the rotation angle of the stepping motor is not changed, and the delta theta 1 is the difference value of the rotation angles of the spindle of C1 and C0, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C0 to C1;
when the rotation angle of the spindle is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D0 to D1, the rotation angle of the stepping motor is controlled to be increased through the control assembly, the increment is delta theta 2, meanwhile, the rotation angle of the spindle is not changed, and delta theta 2 is the difference value of C1 and C0 in the rotation angle of the stepping motor, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C0 to C1;
when the rotation angle of the spindle is thetad and thetaa is less than thetad and is less than thetac, the cloth thickness is changed from D1 to D0, the rotation angle of the stepping motor is controlled to be increased through the control assembly, the increment is delta theta 3, meanwhile, the rotation angle of the spindle is not changed, and delta theta 3 is the difference value of C1 and C0 on the rotation angle of the stepping motor, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C1 to C0;
and fourthly, when the rotation angle of the main shaft is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D1 to D0, the rotation angle of the main shaft is controlled by the control assembly to be increased, the increment is delta theta 4, meanwhile, the rotation angle of the stepping motor is not changed, and delta theta 4 is the difference between the rotation angles of the main shaft of C1 and C0, so that the rotation angle relation curve of the stepping motor and the main shaft is switched from C1 to C0.
According to the invention, the thickness of the cloth is detected in real time by means of the position sensor, and the change of the rotation angle of the stepping motor or the main shaft is controlled by the control assembly, so that the switching of the moving track of the cloth feeding teeth is realized, and therefore, the sewing machine can switch the moving track of the cloth feeding teeth in real time according to the thickness of the sewing fabric in the current stitch length forming process, and the phenomena of needle stacking, needle breakage and untight take-up are avoided in the current stitch length forming process.
Example two:
in this embodiment, the stepping motor has a sudden response change, and in order to improve the error influence caused by the sudden response change of the stepping motor, the same specific control manner as that in the first embodiment may be adopted, and the control assembly controls and reduces the rotation rate of the spindle during curve switching, so as to improve the error influence caused by the sudden response change of the stepping motor.
Of course, the influence of the error caused by the sudden change of the response of the stepping motor can be improved by changing the curve switching path, and the specific control method adopted by the method comprises the following steps:
when the rotation angle of the spindle is thetad and thetaa is less than thetad and thetac, the cloth thickness is changed from D0 to D1, the rotation angle of the spindle is controlled by the control assembly to be increased, the increment is delta theta 1, the rotation angle of the stepping motor is also controlled by the control assembly to be increased, the increment is delta theta 5, and the rotation angle relation curve of the stepping motor and the spindle is switched from C0 to C1;
when the rotation angle of the spindle is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D0 to D1, the rotation angle of the stepping motor is controlled by the control assembly to be increased, the increment of the rotation angle is delta theta 2, the rotation angle of the spindle is also controlled by the control assembly to be increased, the increment of the rotation angle is delta theta 6, and the rotation angle relation curve of the stepping motor and the spindle is switched from C0 to C1;
when the rotation angle of the spindle is thetad and thetaa is less than thetad and is less than thetac, the cloth thickness is changed from D1 to D0, the rotation angle of the stepping motor is controlled by the control assembly to be increased, the increment is delta theta 3, the rotation angle of the spindle is also controlled by the control assembly to be increased, the increment is delta theta 7, and the rotation angle relation curve of the stepping motor and the spindle is switched from C1 to C0;
and fourthly, when the rotation angle of the spindle is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D1 to D0, the rotation angle of the spindle is controlled by the control assembly to be increased by delta theta 4, the rotation angle of the stepping motor is also controlled by the control assembly to be increased by delta theta 8, and the rotation angle relation curve of the stepping motor and the spindle is switched from C1 to C0.
The switching paths of C0 to C1 and C1 to C2 may be linear,
in the first mode, the linear slope k of the switching path is Δ θ 5/Δ θ 1;
in the second mode, the linear slope k of the switching path is Δ θ 6/Δ θ 2;
in the third mode, the linear slope k of the switching path is Δ θ 7/Δ θ 3;
in the fourth mode, the linear slope k of the switching path is Δ θ 8/Δ θ 4.
Meanwhile, the switching paths of the C0 switching to the C1 and the C1 switching to the C2 are both in a smooth curve relationship, that is, a curve switching path subjected to curve smoothing processing is adopted.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. A control method for switching the moving track of a cloth feeding tooth of a sewing machine in real time comprises a needle plate, a presser foot, the cloth feeding tooth and a control assembly, wherein the cloth feeding tooth is driven by a stepping motor to move back and forth and driven by a main shaft to move up and down, and the control method is characterized in that: also comprises a detection sensor for detecting the thickness of the sewing cloth, the detection sensor is electrically connected with the control assembly, a plurality of rotating angle relation curves of the stepping motor and the main shaft when sewing different cloth thicknesses are stored on the control assembly,
setting the rotation angle of the main shaft as theta a when the cloth feeding teeth move from bottom to top to be flush with the needle plate,
setting the rotation angle of the main shaft to be theta b when the cloth feeding teeth move from top to bottom to be flush with the needle plate;
the curve of the relationship between the rotating angle of the stepping motor with the cloth thickness of D0 and the main shaft is set to be C0,
setting a relation curve of a rotation angle between a stepping motor with the cloth thickness of D1 and the main shaft to be C1, wherein D0 is more than D1;
an intersection point M exists between C0 and C1, the rotation angle of a main shaft corresponding to the intersection point M is set to be theta C, and theta a is more than theta C and less than theta b;
the specific control mode comprises the following steps:
when the rotation angle of the main shaft is thetad and thetaa is less than thetad and thetac, the cloth thickness is changed from D0 to D1, the rotation angle of the main shaft is controlled by the control assembly to be increased, and the increment is delta theta 1, so that the rotation angle relation curve of the stepping motor and the main shaft is switched from C0 to C1;
when the rotation angle of the spindle is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D0 to D1, the rotation angle of the stepping motor is controlled to be increased through the control assembly, and the increase is delta theta 2, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C0 to C1;
when the rotation angle of the spindle is thetad and thetaa is less than thetad and thetac, the cloth thickness is changed from D1 to D0, the rotation angle of the stepping motor is controlled by the control assembly to be increased, and the increment is delta theta 3, so that the rotation angle relation curve of the stepping motor and the spindle is switched from C1 to C0;
and fourthly, when the rotation angle of the main shaft is theta e and theta C is less than theta e and less than theta b, the cloth thickness is changed from D1 to D0, the rotation angle of the main shaft is controlled by the control assembly to be increased by delta theta 4, and the rotation angle relation curve of the stepping motor and the main shaft is switched from C1 to C0.
2. The control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time according to claim 1, characterized in that: the detection sensor is a position sensor, and the position sensor is arranged on the presser foot.
3. The control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time as claimed in claim 1, characterized in that:
in the first mode, the rotation angle of the stepping motor is not changed, and Δ θ 1 is the difference between the rotation angles of C1 and C0 on the spindle;
in the second mode, the rotation angle of the spindle is not changed, and Δ θ 2 is the difference between the rotation angles of the stepping motor and C1 and C0;
in the third mode, the rotation angle of the spindle is not changed, and Δ θ 3 is the difference between the rotation angles of the stepping motor and C1 and C0;
in the fourth mode, the rotation angle of the stepping motor is not changed, and Δ θ 4 is the difference between the rotation angles of C1 and C0 on the spindle.
4. The control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time as claimed in claim 1, characterized in that: when the curve is switched, the stepping motor has a response mutation and is controlled by the control assembly to reduce the rotation speed of the main shaft when the curve is switched.
5. The control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time as claimed in claim 1, characterized in that: when the curve is switched, the stepping motor has a response abrupt change,
in the first mode, the control assembly further controls the rotation angle of the stepping motor to increase, and the increase amount is delta theta 5;
in the second mode, the control assembly further controls the rotation angle of the main shaft to increase, and the increase amount is delta theta 6;
in the third mode, the control assembly further controls the rotation angle of the main shaft to increase, and the increase amount is delta theta 7;
in the fourth mode, the control assembly further controls the rotation angle of the stepping motor to increase by Δ θ 8.
6. The control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time according to claim 5, characterized in that: when the curve is switched, the stepping motor has a response abrupt change, the switching paths of C0 to C1 and C1 to C2 are in a linear relationship,
in the first mode, the linear slope k of the switching path is Δ θ 5/Δ θ 1;
in the second mode, the linear slope k of the switching path is Δ θ 6/Δ θ 2;
in the third mode, the linear slope k of the switching path is Δ θ 7/Δ θ 3;
in the fourth mode, the linear slope k of the switching path is Δ θ 8/Δ θ 4.
7. The control method for switching the moving track of the cloth feeding tooth of the sewing machine in real time according to claim 5, characterized in that: when the curve is switched, the stepping motor has a response abrupt change, and the switching paths of C0 switching to C1 and C1 switching to C2 are in a smooth curve relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210220287.3A CN114703607A (en) | 2022-03-08 | 2022-03-08 | Control method for switching moving tracks of cloth feeding teeth of sewing machine in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210220287.3A CN114703607A (en) | 2022-03-08 | 2022-03-08 | Control method for switching moving tracks of cloth feeding teeth of sewing machine in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114703607A true CN114703607A (en) | 2022-07-05 |
Family
ID=82169366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210220287.3A Pending CN114703607A (en) | 2022-03-08 | 2022-03-08 | Control method for switching moving tracks of cloth feeding teeth of sewing machine in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114703607A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB418823A (en) * | 1933-04-27 | 1934-10-29 | United Shoe Machinery Corp | Improvements in or relating to shoe inseam sewing machines |
| JPH05200181A (en) * | 1992-01-29 | 1993-08-10 | Juki Corp | Curve-sewing corrector in double-needle sewing machine with upper thread feeder |
| DE19510666A1 (en) * | 1995-03-23 | 1996-09-26 | Klaus Hampel | Sewing machine |
| JP2001071072A (en) * | 1999-09-03 | 2001-03-21 | Hitachi Zosen Fukui Corp | Method and device for controlling automatic carriage of press |
| JP2008011971A (en) * | 2006-07-04 | 2008-01-24 | Juki Corp | Sewing machine |
| JP2010131173A (en) * | 2008-12-04 | 2010-06-17 | Juki Corp | Sewing machine |
| CN103374794A (en) * | 2012-04-20 | 2013-10-30 | Juki株式会社 | Cloth feeding mechanism of sewing machine |
| JP2015150361A (en) * | 2014-02-19 | 2015-08-24 | ブラザー工業株式会社 | sewing machine |
| JP2017148470A (en) * | 2015-09-18 | 2017-08-31 | Juki株式会社 | sewing machine |
| JP2017184983A (en) * | 2016-04-05 | 2017-10-12 | Juki株式会社 | sewing machine |
| CN110983639A (en) * | 2019-12-30 | 2020-04-10 | 拓卡奔马机电科技有限公司 | Cloth feeding device, cloth feeding device control method and wrist bending machine |
| CN210657424U (en) * | 2019-08-27 | 2020-06-02 | 浙江沪龙科技股份有限公司 | Automatic lift presser foot mechanism and sewing machine |
-
2022
- 2022-03-08 CN CN202210220287.3A patent/CN114703607A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB418823A (en) * | 1933-04-27 | 1934-10-29 | United Shoe Machinery Corp | Improvements in or relating to shoe inseam sewing machines |
| JPH05200181A (en) * | 1992-01-29 | 1993-08-10 | Juki Corp | Curve-sewing corrector in double-needle sewing machine with upper thread feeder |
| DE19510666A1 (en) * | 1995-03-23 | 1996-09-26 | Klaus Hampel | Sewing machine |
| JP2001071072A (en) * | 1999-09-03 | 2001-03-21 | Hitachi Zosen Fukui Corp | Method and device for controlling automatic carriage of press |
| JP2008011971A (en) * | 2006-07-04 | 2008-01-24 | Juki Corp | Sewing machine |
| JP2010131173A (en) * | 2008-12-04 | 2010-06-17 | Juki Corp | Sewing machine |
| CN103374794A (en) * | 2012-04-20 | 2013-10-30 | Juki株式会社 | Cloth feeding mechanism of sewing machine |
| JP2015150361A (en) * | 2014-02-19 | 2015-08-24 | ブラザー工業株式会社 | sewing machine |
| JP2017148470A (en) * | 2015-09-18 | 2017-08-31 | Juki株式会社 | sewing machine |
| JP2017184983A (en) * | 2016-04-05 | 2017-10-12 | Juki株式会社 | sewing machine |
| CN210657424U (en) * | 2019-08-27 | 2020-06-02 | 浙江沪龙科技股份有限公司 | Automatic lift presser foot mechanism and sewing machine |
| CN110983639A (en) * | 2019-12-30 | 2020-04-10 | 拓卡奔马机电科技有限公司 | Cloth feeding device, cloth feeding device control method and wrist bending machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5660129A (en) | Sewing machine | |
| CN114703607A (en) | Control method for switching moving tracks of cloth feeding teeth of sewing machine in real time | |
| JPS5988197A (en) | Method and apparatus for positional determination of final needle eyelet to predetermined position in stitch article | |
| CN107090669B (en) | Control system and method for automatic backstitch device of sewing machine | |
| US5603272A (en) | Two-needle type sewing machine | |
| US4458612A (en) | Buttonhole sewing machine and method of buttonhole formation | |
| GB2168085A (en) | Apparatus for automatically adjusting the stitch pitch of a sewing machine | |
| US5778810A (en) | Sewing machine | |
| US6354233B1 (en) | Sewing or embroidery machine | |
| JP3913842B2 (en) | Sewing presser pressure control device | |
| CN1699665B (en) | Controlling device of sewing machine electromotor and its controlling method | |
| JPS63209696A (en) | Constant position stop apparatus of sewing machine | |
| US5063867A (en) | Zigzag sewing machine | |
| JPS62284691A (en) | Sewing machine having sewing device finishing at predetermined position | |
| US4649837A (en) | Automatic sewing machine | |
| JPH0240350B2 (en) | MISHINNOOKURIRYOSEIGYOHOHOTOSONOSOCHI | |
| KR20040077555A (en) | Electric zigzag sewing machine | |
| EP3889333A1 (en) | Sewing device | |
| JPH0339187Y2 (en) | ||
| AU592234B2 (en) | Automatic needle thread supply control system | |
| US5762011A (en) | Embroidering sewing machine | |
| JPH0125597B2 (en) | ||
| JP4369580B2 (en) | Electronic sewing machine | |
| JPH0346713Y2 (en) | ||
| JP2002102572A (en) | Thread breakage detecting method for sewing machine and stitch-back method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |