CN112391746A - Presser foot lifting and trimming device of overedger - Google Patents
Presser foot lifting and trimming device of overedger Download PDFInfo
- Publication number
- CN112391746A CN112391746A CN202011191737.8A CN202011191737A CN112391746A CN 112391746 A CN112391746 A CN 112391746A CN 202011191737 A CN202011191737 A CN 202011191737A CN 112391746 A CN112391746 A CN 112391746A
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- presser foot
- thread trimming
- trimming
- lifting
- thread
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- 238000009966 trimming Methods 0.000 title claims abstract description 94
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000009957 hemming Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000009958 sewing Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a presser foot lifting and trimming device of a overedger, and belongs to the technical field of machinery. The presser foot lifting and thread cutting device of the overlock sewing machine comprises a presser foot, a motor and a thread cutting knife, wherein a cam is fixed on an output shaft of the motor, a presser foot guide part and a thread cutting guide part are arranged on the cam, the presser foot guide part is in transmission connection with the presser foot through a first transmission structure, the thread cutting guide part is in transmission connection with the thread cutting knife through a second transmission structure, and when the motor drives the cam to rotate, the presser foot guide part can drive the presser foot to move up and down or the thread cutting guide part can drive the thread cutting knife to swing. The invention has the advantages of low noise and capability of controlling the pressure foot lifting and the thread trimming simultaneously by one motor.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a presser foot lifting and trimming device of a overedger.
Background
The hemming machine needs to use a presser foot lifting function in the use process at present, a commonly used power source is an air pump or an electromagnet at present, a thread cutting function is also needed, and the thread cutting power is the same as that of the presser foot lifting function, and the air pump or the electromagnet is adopted. When the wire is cut and the presser foot is lifted, the mode can generate larger vibration noise to influence the working environment of workers, and in order to solve the problems, the invention designs the device for driving the wire cutting and the presser foot lifting by the motor.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a presser foot lifting and trimming device of a overedger, and has the characteristics of low noise and capability of controlling the presser foot lifting and trimming simultaneously by one motor.
The purpose of the invention can be realized by the following technical scheme:
the presser foot lifting and thread cutting device of the overedger comprises a presser foot, a motor and a thread cutter,
it is characterized in that the preparation method is characterized in that,
a cam is fixed on an output shaft of the motor, a presser foot guide part and a thread cutting guide part are arranged on the cam,
the presser foot guide part is in transmission connection with the presser foot through a first transmission structure,
the thread cutting guide part is in transmission connection with the thread cutting knife through a second transmission structure,
when the motor drives the cam to rotate, the presser foot guide part can drive the presser foot to move up and down or the thread trimming guide part can drive the thread trimming knife to swing.
In the presser foot lifting and thread cutting device of the overedger, when the motor drives the cam to rotate clockwise, the presser foot guide part can drive the presser foot to move up and down.
In the presser foot lifting and thread cutting device for the overedger, when the motor drives the cam to rotate anticlockwise, the thread cutting guide part can drive the thread cutting knife to swing.
In the presser foot lifting and thread cutting device of the overedger, the presser foot guide part is provided with an arc-shaped guide surface.
In the presser foot lifting and thread cutting device for the overedger, the thread cutting guide part is provided with an inclined guide surface arranged around the output shaft of the motor.
In the presser foot lifting and thread cutting device of the overedger, the first transmission structure comprises a presser foot lifting roller block, a presser foot lifting lever, a tooth lifting foot shaft and a presser foot lifting crank, the presser foot lifting lever is fixedly connected to one end of the tooth lifting foot shaft, the presser foot lifting crank is fixedly connected to the other end of the tooth lifting foot shaft, the presser foot lifting roller block is rotatably arranged on the presser foot lifting lever, the presser foot is fixed on the presser foot lifting crank, and the presser foot lifting roller block can abut against the presser foot guide part and can move along the surface of the presser foot guide part.
In the presser foot lifting and trimming device for the overedger, the second transmission structure comprises a trimming rocker, a trimming rolling block, a trimming connecting rod, a trimming crank, a trimming shaft and a trimming knife, the trimming crank is fixed at one end of the trimming shaft, the trimming knife is fixed at the other end of the trimming shaft, one end of the trimming connecting rod is hinged at the other end of the trimming crank, the trimming rocker is hinged at the other end of the trimming connecting rod, the trimming rolling block is rotatably connected to the trimming rocker, and the trimming rolling block can abut against the trimming guide part and can move along the surface of the trimming guide part.
In the presser foot lifting and thread cutting device of the overedger, the overlock machine further comprises a machine shell, and the motor is fixed on the machine shell.
In the presser foot lifting and thread cutting device of the overedger, the tooth lifting foot shaft is rotatably arranged on the machine shell.
In the presser foot lifting and thread cutting device of the overedger, one end of the thread cutting rocker is rotatably connected to the machine shell, and the thread cutting shaft is rotatably connected to the machine shell.
Compared with the prior art, the invention has the following advantages:
when the machine presser foot needs to be lifted, the presser foot guide part drives the presser frame to move up and down through the anticlockwise rotation of the driving lug, and when the machine needs to cut the thread, the thread cutting guide part drives the thread cutting knife to swing and cut the thread through the clockwise rotation of the driving lug. The invention can greatly reduce noise.
Drawings
FIG. 1 is a schematic of the present invention.
Fig. 2 is a schematic view of the cam of the present invention.
Fig. 3 is a schematic view of a first transmission configuration of the present invention.
Fig. 4 is a schematic diagram of a second transmission configuration of the present invention.
In the figure, 1, a motor; 2. a cam; 2-1, a trimming guide part; 2-2, a presser foot guide; 3. lifting a presser foot rolling block; 4. lifting a presser foot lever; 5. a tooth raising foot shaft; 6. lifting a presser foot crank; 7. a presser foot; 8. a thread trimming rocker; 9. a thread cutting roller block; 10. trimming connecting rods; 11. a thread cutting crank; 12. a thread cutting shaft; 13. a thread cutter.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 4, the hemming machine presser foot 7 thread trimming device comprises a presser foot 7, a motor 1 and a thread trimming knife 13, wherein a cam 2 is fixed on an output shaft of the motor 1, a presser foot guide part 2-2 and a thread trimming guide part 2-1 are arranged on the cam 2, the presser foot guide part 2-2 is in transmission connection with the presser foot 7 through a first transmission structure, and the thread trimming guide part 2-1 is in transmission connection with the thread trimming knife 13 through a second transmission structure, wherein when the motor 1 drives the cam 2 to rotate, the presser foot guide part 2-2 can drive the presser foot 7 to move up and down or the thread trimming guide part 2-1 can drive the thread trimming knife 13 to swing.
The working principle of the invention is as follows: when the foot is required to be lifted or the thread is required to be cut, the motor 1 drives the cam 2 to rotate, the presser foot guide part 2-2 can drive the presser foot 7 to move up and down, or the thread cutting guide part 2-1 can drive the thread cutter 13 to swing.
The invention adopts one motor 1 to drive the presser foot lifting and trimming simultaneously, saves resources, has low cost and can greatly reduce noise by driving the motor 1.
Specifically, when the motor 1 drives the cam 2 to rotate clockwise, the presser foot guide part 2-2 can drive the presser foot 7 to move up and down.
Specifically, when the motor 1 drives the cam 2 to rotate counterclockwise, the trimming guide 2-1 can drive the trimming blade 13 to swing.
Specifically, the presser foot guide 2-2 has an arc-shaped guide surface.
Specifically, the trimming guide 2-1 has an inclined guide surface provided around the output shaft of the motor 1.
Specifically, the first transmission structure comprises a presser foot lifting rolling block 3, a presser foot lifting lever 4, a tooth lifting foot shaft 5 and a presser foot lifting crank 6, the presser foot lifting lever 4 is fixedly connected to one end of the tooth lifting foot shaft 5, the presser foot lifting crank 6 is fixedly connected to the other end of the tooth lifting foot shaft 5, the presser foot lifting rolling block 3 is rotatably arranged on the presser foot lifting lever 4, a presser foot 7 is fixedly arranged on the presser foot lifting crank 6, and the presser foot lifting rolling block 3 can abut against the presser foot guide part 2-2 and can move along an arc-shaped guide surface on the presser foot guide part 2-2.
The presser foot lifting roller block 3 can abut against the presser foot guide part 2-2 and can move along the arc-shaped guide surface on the presser foot guide part 2-2 to lift the presser foot lifting roller block 3.
When the machine presser foot 7 needs to be lifted, the machine presser foot 7 rotates anticlockwise for a certain angle, the presser foot lifting guide part 2-2 on the cam 2 rotates along with the presser foot lifting guide part, when the presser foot lifting guide part 2-2 is in contact with the presser foot lifting roller block 3, the presser foot lifting lever 4 is driven to rotate clockwise, the presser foot 7 is finally driven to be lifted upwards through power transmission of the presser foot lifting 7 shaft and the presser foot lifting crank 6, the lifting height is determined by the rotating angle of the motor 1, and after the action of the presser foot lifting 7 is completed, the motor 1 returns to the original position.
The contact between the presser foot roller block 3 and the arc-shaped guide surface can prolong the service life of the presser foot guide part 2-2 and reduce the noise during contact.
Specifically, the second transmission structure comprises a trimming rocker 8, a trimming roller block 9, a trimming connecting rod 10, a trimming crank 11, a trimming shaft 12 and a trimming knife 13, the trimming crank 11 is fixed at one end of the trimming shaft 12, the trimming knife 13 is fixed at the other end of the trimming shaft 12, one end of the trimming connecting rod 10 is hinged to the other end of the trimming crank 11, the trimming rocker 8 is hinged to the other end of the trimming connecting rod 10, the trimming roller block 9 is rotatably connected to the trimming rocker 8, and the trimming roller block 9 can abut against the trimming guide portion 2-1 and can move along the surface of the trimming guide portion 2-1.
The thread cutting roller block 9 can abut against the thread cutting guide part 2-1 and can move along the inclined guide surface on the thread cutting guide part 2-1 and extrude the thread cutting roller block 9.
When the machine needs a thread cutting action, the machine rotates clockwise to drive the cam 2 to rotate, the thread cutting guide part 2-1 can be in contact with the thread cutting rolling block 9, the thread cutting rolling block 9 and the thread cutting rocker 8 are gradually pushed to rotate along with the rotation of the angle of the motor 1, the thread cutting knife 13 is finally driven to rotate through the thread cutting connecting rod 10, the thread cutting crank 11 and the thread cutting shaft 12, the thread cutting action is completed, then the motor 1 is reset to the original point to wait for the next action, and in the process, the presser foot guide part 2-2 cannot be in contact with the presser foot lifting rolling block 3 all the time.
The contact between the thread cutting roller block 9 and the inclined guide surface can prolong the service life of the thread cutting guide part 2-1 and reduce the noise during contact.
In particular, the motor 1 is fixed on the machine shell.
Specifically, the tooth raising foot shaft 5 is rotatably provided on the housing.
Specifically, one end of the trimming rocker 8 is rotatably connected to the housing. The shear wire shaft is rotatably connected to the housing.
The above components are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The presser foot lifting and thread cutting device of the overedger comprises a presser foot, a motor and a thread cutter,
it is characterized in that the preparation method is characterized in that,
a cam is fixed on an output shaft of the motor, a presser foot guide part and a thread cutting guide part are arranged on the cam,
the presser foot guide part is in transmission connection with the presser foot through a first transmission structure,
the thread cutting guide part is in transmission connection with the thread cutting knife through a second transmission structure,
when the motor drives the cam to rotate, the presser foot guide part can drive the presser foot to move up and down or the thread trimming guide part can drive the thread trimming knife to swing.
2. The overlock machine presser foot thread trimming device according to claim 1, wherein the presser foot guide is adapted to move the presser foot up and down when the motor drives the cam to rotate clockwise.
3. The overlock machine presser foot thread trimming apparatus according to claim 1, wherein the thread trimming guide is adapted to swing the thread trimming blade when the motor drives the cam to rotate counterclockwise.
4. The overlock machine presser foot thread trimming device according to claim 1, wherein the presser foot guide has an arcuate guide surface.
5. The overlock machine presser foot thread trimming apparatus according to claim 1, wherein the thread trimming guide has an inclined guide surface disposed about the motor output shaft.
6. The hemming machine presser foot lifting and trimming device according to claim 1, wherein the first transmission structure includes a presser foot lifting roller block, a presser foot lifting lever, a tooth lifting foot shaft, and a presser foot lifting crank, the presser foot lifting lever is fixedly connected to one end of the tooth lifting foot shaft, the presser foot lifting crank is fixedly connected to the other end of the tooth lifting foot shaft, the presser foot lifting roller block is rotatably disposed on the presser foot lifting lever, the presser foot is fixed on the presser foot lifting crank, and the presser foot lifting roller block can abut against a presser foot guide part and can move along a surface of the presser foot guide part.
7. The hemming machine presser foot thread trimming device according to claim 1, wherein the second transmission structure includes a thread trimming rocker, a thread trimming roller block, a thread trimming connecting rod, a thread trimming crank, a thread trimming shaft and a thread trimming knife, the thread trimming crank is fixed at one end of the thread trimming shaft, the thread trimming knife is fixed at the other end of the thread trimming shaft, one end of the thread trimming connecting rod is hinged at the other end of the thread trimming crank, the thread trimming rocker is hinged at the other end of the thread trimming connecting rod, and the thread trimming roller block is rotatably connected to the thread trimming rocker.
8. The overlock machine presser foot thread trimming apparatus according to claim 1, further comprising a housing, the motor being fixed to the housing.
9. The overlock machine presser foot thread trimming apparatus according to claim 6, wherein the feed lifting foot shaft is rotatably provided on the housing.
10. The overlock machine presser foot trimming device of claim 6 wherein one end of said trimming rocker is pivotally connected to said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191737.8A CN112391746A (en) | 2020-10-30 | 2020-10-30 | Presser foot lifting and trimming device of overedger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191737.8A CN112391746A (en) | 2020-10-30 | 2020-10-30 | Presser foot lifting and trimming device of overedger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112391746A true CN112391746A (en) | 2021-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011191737.8A Pending CN112391746A (en) | 2020-10-30 | 2020-10-30 | Presser foot lifting and trimming device of overedger |
Country Status (1)
| Country | Link |
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| CN (1) | CN112391746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164577A (en) * | 2021-11-17 | 2022-03-11 | 上海鲍麦克斯电子科技有限公司 | Thread trimming and presser foot device for stepping button sewing machine |
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| CN109537194A (en) * | 2018-11-30 | 2019-03-29 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine and automatic needle-foot-lifting trimming control method |
| EP3556923A1 (en) * | 2018-04-20 | 2019-10-23 | Dürkopp Adler AG | Sewing machine |
| CN209722464U (en) * | 2019-01-15 | 2019-12-03 | 浙江美机缝纫机有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
| CN110670249A (en) * | 2019-10-12 | 2020-01-10 | 杰克缝纫机股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
| CN210796864U (en) * | 2019-09-17 | 2020-06-19 | 浙江美机缝纫机有限公司 | Thread trimming and presser foot lifting mechanism of sewing machine |
| CN211420514U (en) * | 2019-08-28 | 2020-09-04 | 台州市速普机电有限公司 | Thread trimming and presser foot lifting device |
| CN211689460U (en) * | 2019-12-17 | 2020-10-16 | 杰克缝纫机股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
| CN214060867U (en) * | 2020-10-30 | 2021-08-27 | 浙江广和缝纫机有限公司 | Presser foot lifting and trimming device of overedger |
-
2020
- 2020-10-30 CN CN202011191737.8A patent/CN112391746A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3556923A1 (en) * | 2018-04-20 | 2019-10-23 | Dürkopp Adler AG | Sewing machine |
| CN109537194A (en) * | 2018-11-30 | 2019-03-29 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine and automatic needle-foot-lifting trimming control method |
| CN209722464U (en) * | 2019-01-15 | 2019-12-03 | 浙江美机缝纫机有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
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| CN210796864U (en) * | 2019-09-17 | 2020-06-19 | 浙江美机缝纫机有限公司 | Thread trimming and presser foot lifting mechanism of sewing machine |
| CN110670249A (en) * | 2019-10-12 | 2020-01-10 | 杰克缝纫机股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
| CN211689460U (en) * | 2019-12-17 | 2020-10-16 | 杰克缝纫机股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
| CN214060867U (en) * | 2020-10-30 | 2021-08-27 | 浙江广和缝纫机有限公司 | Presser foot lifting and trimming device of overedger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164577A (en) * | 2021-11-17 | 2022-03-11 | 上海鲍麦克斯电子科技有限公司 | Thread trimming and presser foot device for stepping button sewing machine |
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