CN106948096B - Presser foot device and sewing machine are lifted to sewing machine trimming - Google Patents
Presser foot device and sewing machine are lifted to sewing machine trimming Download PDFInfo
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- CN106948096B CN106948096B CN201710325449.9A CN201710325449A CN106948096B CN 106948096 B CN106948096 B CN 106948096B CN 201710325449 A CN201710325449 A CN 201710325449A CN 106948096 B CN106948096 B CN 106948096B
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- trimming
- presser foot
- foot lifting
- sewing machine
- motor
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention belongs to the technical field of sewing machines, and relates to a thread trimming and presser foot lifting structure of a sewing machine and the sewing machine. Wherein the sewing machine trimming lifts presser foot structure includes: the double-end motor, the trimming cam component and the presser foot lifting crank component, wherein the trimming cam component comprises a trimming cam arranged on a motor shaft at one end of the double-end motor, a moving groove is formed in the trimming cam, one end of a trimming crank is connected with the trimming cam through a connecting pin, the connecting pin is arranged in the moving groove of the trimming cam, the other end of the trimming crank is connected with a trimming shaft, and the trimming shaft is connected with a trimming mechanism; the presser foot lifting crank assembly comprises a presser foot lifting crank arranged on a motor shaft at the other end of the double-end motor, wherein the presser foot lifting crank is provided with a butting part, and the butting part is butted with a mandril of the presser foot lifting mechanism. The invention controls the actions of the thread trimming mechanism and the presser foot lifting mechanism by one driving source, reduces the driving source, has simpler structure, small occupied space and convenient installation, and reduces the cost.
Description
Technical Field
The invention belongs to the technical field of sewing machines, and relates to a thread trimming and presser foot lifting device of a sewing machine and the sewing machine.
Background
At present, a thread trimming driving mechanism and a presser foot lifting mechanism on a flat sewing machine are two mechanisms which are mutually independent. The thread trimming driving mechanism for trimming threads and the presser foot lifting lever for lifting the presser foot are respectively driven by two electromagnets. However, the electromagnet as a driving source has the following drawbacks: the stroke of the electromagnet can not be flexibly changed, and can generate great shaking and noise during movement, so that the noise of the sewing machine is great, and the stable work of the sewing machine can be influenced. In addition, the two driving sources lead to the defects of more complex structure, large occupied space, higher cost, inconvenient installation and the like.
Disclosure of Invention
The invention provides a thread cutting and presser foot lifting device of a sewing machine and the sewing machine aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to reduce the occupied space, reduce the noise, simplify and ensure the stable work of the sewing machine.
The purpose of the invention can be realized by the following technical scheme:
one of the objects of the present invention is to provide a thread trimming and presser foot lifting device for a sewing machine, comprising:
the motor is a double-head motor, and the action of the motor is controlled by the control box;
the trimming cam assembly is connected between a left motor shaft of the double-end motor and the trimming mechanism through the trimming cam assembly, the trimming cam assembly comprises a trimming cam arranged on the left motor shaft of the double-end motor, a moving groove is formed in the trimming cam, one end of a trimming crank is connected with the trimming cam through a connecting pin, the connecting pin is arranged in the moving groove of the trimming cam, the other end of the trimming crank is connected with the trimming shaft, and the trimming shaft is connected with the trimming mechanism;
the right motor shaft of the double-headed motor is connected with the presser foot lifting mechanism through the presser foot lifting crank assembly, the presser foot lifting crank assembly comprises a presser foot lifting crank arranged on the right motor shaft of the double-headed motor, and the presser foot lifting crank is provided with a butting part which is butted with a mandril of the presser foot lifting mechanism;
when the thread trimming action is executed, the presser foot lifting mechanism executes an idle stroke; when the presser foot lifting action is executed, the thread trimming mechanism executes the idle stroke.
In the thread trimming and presser foot lifting device for the sewing machine, the double-end motor is fixedly arranged on the bottom plate through the motor bracket.
In the thread trimming and presser foot lifting device of the sewing machine, a right motor shaft of the double-head motor is arranged on a support plate, and the support plate is arranged on a motor bracket or a bottom plate.
In the thread trimming and presser foot lifting device of the sewing machine, the support plate is provided with the boss with the middle hole, the support plate is provided with the motor shaft hole for the right motor shaft to pass through, and the motor shaft hole and the boss are coaxially arranged.
In the thread trimming and presser foot lifting device of the sewing machine, a first sleeve is arranged between the boss and the right motor shaft.
In the thread trimming and presser foot lifting device of the sewing machine, one end of the connecting pin is arranged on the thread trimming crank, the other end of the connecting pin is provided with the roller, and the roller is arranged in the motion groove of the thread trimming cam and can move along the motion groove.
In the thread trimming and presser foot lifting device of the sewing machine, the motion groove is in an L shape.
In the thread trimming and presser foot lifting device for the sewing machine, an oil pan is arranged at one end of the bottom plate connected with the machine shell, the double-head motor is positioned on the bottom plate on the left side of the oil pan, and the lower end of the ejector rod of the presser foot lifting mechanism extends out of the oil pan.
In the thread cutting and presser foot lifting device of the sewing machine, the thread cutting shaft is arranged on the bottom plate through the second sleeve.
The invention also aims to provide a sewing machine which comprises the thread trimming and presser foot lifting structure of the sewing machine.
Compared with the prior art, the invention has the following advantages:
1. the invention controls the actions of the thread trimming mechanism and the presser foot lifting mechanism by one driving source (namely one motor), and compared with the prior art, the invention reduces the driving source, has simpler structure, small occupied space and convenient installation and reduces the cost; in addition, the motor drive reduces noise compared to electromagnets.
2. The motor of the invention can control the rotation angle through the control box so as to control a plurality of functions of the height of the presser foot lifting, the thread cutting time and the like, thereby being suitable for various sewing occasions.
3. The presser foot lifting crank assembly drives the ejector rod outside the oil pan, so that the risk of oil leakage is reduced.
4. The control box has the advantages of increased operability and higher intelligence.
Drawings
Fig. 1 is one of the structural diagrams of the present invention provided on a base plate.
Fig. 2 is a second schematic view of the structure of the present invention disposed on the bottom plate.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is an exploded schematic view of the present invention.
Fig. 5 is a schematic structural view of the trimming cam of the present invention.
Fig. 6 is a schematic view of the construction of the lift and press foot assembly of the present invention.
In the figure, 1, a double-head motor; 2. a left motor shaft; 3. a trimming cam; 4. a motion groove; 5. a thread cutting crank; 6. a connecting pin; 7. a thread cutting shaft; 8. a right motor shaft; 9. lifting a presser foot crank; 10. an abutting portion; 11. a top rod; 12. a motor bracket; 13. a base plate; 14. A supporting seat; 15. a roller; 16. an oil pan; 17. a second sleeve; 18. a boss; 19. A motor shaft hole; 20. a first sleeve.
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 6, the present invention provides a thread trimming and presser foot lifting device for a sewing machine, comprising: the motor is a double-head motor 1, namely motor shafts, namely a left motor shaft 2 and a right motor shaft 8, extend out of two ends of the motor, and the action of the motor is controlled by a control box; it should be noted that the left motor shaft 2 and the right motor shaft 8 of the present invention are the same motor shaft or two motor shafts. The control box is mainly used for controlling the clockwise rotation or the anticlockwise rotation of a motor shaft of the motor and the rotation angle of the motor shaft so as to control the height of the presser foot lifting, the thread cutting time and other functions.
The trimming cam component is used for connecting a left motor shaft 2 of a double-end motor 1 and a trimming mechanism, the trimming cam component comprises a trimming cam 3 arranged on the left motor shaft 2 of the double-end motor 1, a moving groove 4 is formed in the trimming cam 3, one end of a trimming crank 5 is connected with the trimming cam 3 through a connecting pin 6, the connecting pin 6 is arranged in the moving groove 4 of the trimming cam 3, the other end of the trimming crank 5 is connected with a trimming shaft 7, and the trimming shaft 7 is connected with the trimming mechanism.
The pressure foot lifting crank assembly is used for connecting a right motor shaft 8 of the double-head motor 1 with the pressure foot lifting mechanism and comprises a pressure foot lifting crank 9 arranged on the right motor shaft 8 of the double-head motor 1, an abutting part 10 is arranged on the pressure foot lifting crank 9, and the abutting part 10 abuts against an ejector rod 11 of the pressure foot lifting mechanism. The pressure raising and pressing foot crank 9 is fixedly arranged on the right motor shaft 8 through a screw, and the right motor shaft 8 rotates clockwise or anticlockwise to drive the abutting part 10 to rotate along with the right motor shaft. When the right motor shaft 8 rotates clockwise, the abutting part 10 acts on the ejector rod 11; when the right motor shaft 8 rotates counterclockwise, the abutting part 10 rotates for a free stroke and is not connected with the ejector rod 11.
The action of the presser foot lifting of the invention is directly acted on the mandril 11 through the contact part 10 on the presser foot lifting crank 9 for driving, and the structure is simpler.
The double-headed motor 1 of the present invention is a stepping motor.
When the thread trimming action is executed, the presser foot lifting mechanism executes the idle stroke (namely, the ejector rod 11 is not enabled to act); when the presser foot lifting action is executed, the thread cutting mechanism executes an idle stroke (namely, the thread cutting mechanism is not enabled to act).
The working principle of the invention is as follows:
when a trimming instruction is obtained, the double-end motor 1 is started and rotates anticlockwise, so that the trimming cam 3 fixed on the left motor shaft 2 rotates anticlockwise, the connecting pin 6 moves along the moving groove 4 of the trimming cam 3, the trimming crank 5 is driven to rotate, the whole trimming structure is driven to move to complete trimming, and the double-end motor 1 rotates clockwise to the original position after trimming, and the trimming structure is driven to reset.
When a presser foot lifting instruction is obtained, the double-end motor 1 is started and rotates clockwise, so that the presser foot lifting crank 9 is driven to rotate clockwise, the abutting part 10 on the presser foot lifting crank 9 acts on the ejector rod 11, and the whole presser foot lifting structure is driven to realize the height-adjustable presser foot lifting function.
The clockwise rotation and the anticlockwise rotation are based on the front view of the left end (namely the end provided with the left motor shaft 2) of the double-head motor 1.
Further, the double-headed motor 1 is fixedly arranged on the bottom plate 13 through a motor bracket 12.
Further, in order to reduce the stress of the double-head motor 1 and increase the service life of the double-head motor, the right motor shaft 8 of the double-head motor 1 is arranged on a support plate 14, and the support plate 14 is fixedly arranged on the motor bracket 12 or the bottom plate 13 by means of screws and the like.
For example, the motor holder 12.
The supporting plate 14 is provided with a boss 18 with a central hole, the supporting plate 14 is provided with a motor shaft hole 19 for the right motor shaft 8 to pass through, and the motor shaft hole 19 and the boss 18 are coaxially arranged.
Further, a first sleeve 20 is disposed between the boss 18 and the right motor shaft 8.
In order to make the connecting pin 6 move more flexibly in the moving groove 4 of the trimming cam 3, one end of the connecting pin 6 is arranged on the trimming crank 5, the other end of the connecting pin 6 is provided with a roller 15, and the roller 15 is arranged in the moving groove 4 of the trimming cam 3 and can move along the moving groove 4.
In particular, the movement slot 4 is L-shaped. Comprises an arc-shaped groove and a straight groove, wherein the arc-shaped groove and the straight groove are communicated with each other at one end. The arc-shaped groove part is a motion track of the double-end motor 1 during anticlockwise rotation, and the straight groove is a motion track of the double-end motor 1 during clockwise rotation, namely when the presser foot lifting action is carried out, the idle stroke of the left motor shaft 2 ensures that the left motor shaft 2 and the right motor shaft 8 cannot interfere with corresponding parts when the double-end motor 1 is clockwise and anticlockwise, so that the thread cutting action and the presser foot lifting action are independently completed.
Furthermore, an oil pan 16 is arranged at one end of the bottom plate 13 connected with the machine shell, the double-head motor 1 is positioned on the bottom plate 13 at the left side of the oil pan 16, and the lower end of the ejector rod 11 of the presser foot lifting mechanism extends out of the oil pan 16; the presser foot lifting crank assembly drives the ejector rod 11 outside the oil pan 16, and the risk of oil leakage is reduced.
Further, the thread cutting shaft 7 is arranged on the bottom plate 13 through the second sleeve 17, so that the thread cutting shaft 7 rotates more stably, the smooth proceeding of thread cutting action is ensured, and the working stability of the sewing machine is further ensured.
The invention also aims to provide a sewing machine which comprises the thread trimming and presser foot lifting device.
In the description of the present invention, it is to be understood that the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom" are used herein to indicate orientations and positional relationships thereof, which are usually based on the flavor or positional relationships shown in the drawings, and are used for convenience of description and simplicity of description, and that the directional terms do not indicate and imply that the referenced device or component must have a particular orientation or be constructed and operated in a particular orientation without departing from the scope of the invention, and that the directional terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.
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 (9)
1. The utility model provides a presser foot device is lifted in sewing machine trimming which characterized in that: the method comprises the following steps:
the motor is a double-head motor (1), and the action of the motor is controlled by the control box;
the trimming cam assembly is connected between a left motor shaft (2) of the double-head motor (1) and the trimming mechanism through the trimming cam assembly, the trimming cam assembly comprises a trimming cam (3) arranged on the left motor shaft (2) of the double-head motor (1), a moving groove (4) is formed in the trimming cam (3), one end of a trimming crank (5) is connected with the trimming cam (3) through a connecting pin (6), the connecting pin (6) is arranged in the moving groove (4) of the trimming cam (3), the other end of the trimming crank (5) is connected with a trimming shaft (7), and the trimming shaft (7) is connected with the trimming mechanism;
the presser foot lifting crank assembly is connected between a right motor shaft (8) of the double-head motor (1) and the presser foot lifting mechanism through the presser foot lifting crank assembly, the presser foot lifting crank assembly comprises a presser foot lifting crank (9) arranged on the right motor shaft (8) of the double-head motor (1), an abutting part (10) is arranged on the presser foot lifting crank (9), the abutting part (10) is positioned below the lower end of a mandril (11) of the presser foot lifting mechanism, and the abutting part (10) can jack the mandril (11) when rotating towards the mandril (11); a right motor shaft (8) of the double-head motor (1) is arranged on a support plate (14), and the support plate (14) is arranged on a motor bracket (12) or a bottom plate (13);
when the thread trimming action is executed, the presser foot lifting mechanism executes an idle stroke; when the presser foot lifting action is executed, the thread trimming mechanism executes the idle stroke.
2. The thread trimming and presser foot lifting device of a sewing machine according to claim 1, wherein: the double-end motor (1) is fixedly arranged on the bottom plate (13) through a motor bracket (12).
3. The thread trimming and presser foot lifting device of a sewing machine according to claim 1, wherein: the support plate (14) is provided with a boss (18) with a middle hole, the support plate (14) is provided with a motor shaft hole (19) for a right motor shaft (8) to pass through, and the motor shaft hole (19) and the boss (18) are coaxially arranged.
4. The thread trimming and presser foot lifting device of a sewing machine according to claim 3, wherein: a first sleeve (20) is arranged between the boss (18) and the right motor shaft (8).
5. The thread trimming and presser foot lifting device of a sewing machine according to claim 1, wherein: one end of the connecting pin (6) is arranged on the thread trimming crank (5), the other end of the connecting pin (6) is provided with a roller (15), and the roller (15) is arranged in the moving groove (4) of the thread trimming cam (3) and can move along the moving groove (4).
6. The thread trimming and presser foot lifting device of a sewing machine according to claim 1 or 5, wherein: the motion groove (4) is L-shaped.
7. The thread trimming and presser foot lifting device of a sewing machine according to claim 1, wherein: an oil pan (16) is arranged at one end of the bottom plate (13) connected with the shell, the double-head motor (1) is positioned on the bottom plate (13) on the left side of the oil pan (16), and the lower end of a push rod (11) of the presser foot lifting mechanism extends out of the oil pan (16).
8. The thread trimming and presser foot lifting device of a sewing machine according to claim 1, wherein: the shear line shaft (7) is arranged on the bottom plate (13) through a second sleeve (17).
9. A sewing machine characterized by: comprising a thread trimming and presser foot lifting device of a sewing machine according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710325449.9A CN106948096B (en) | 2017-05-10 | 2017-05-10 | Presser foot device and sewing machine are lifted to sewing machine trimming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710325449.9A CN106948096B (en) | 2017-05-10 | 2017-05-10 | Presser foot device and sewing machine are lifted to sewing machine trimming |
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| Publication Number | Publication Date |
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| CN106948096A CN106948096A (en) | 2017-07-14 |
| CN106948096B true CN106948096B (en) | 2020-06-23 |
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| CN201710325449.9A Active CN106948096B (en) | 2017-05-10 | 2017-05-10 | Presser foot device and sewing machine are lifted to sewing machine trimming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108677399B (en) * | 2018-07-16 | 2023-12-01 | 浙江美机缝纫机有限公司 | Sewing machine and thread cutting and presser foot lifting device thereof |
| CN109487454B (en) * | 2018-12-29 | 2020-11-13 | 安徽杰羽制鞋机械科技有限公司 | Presser foot device is lifted to sewing machine's trimming |
| CN111501214B (en) * | 2019-01-31 | 2021-12-28 | 浙江杰克智能缝制科技有限公司 | Sewing machine thread trimming, presser foot lifting and needle distance adjusting device and sewing machine |
| CN111501225B (en) * | 2019-01-31 | 2022-01-04 | 浙江杰克智能缝制科技有限公司 | Thread trimming and presser foot lifting and needle sealing device of sewing machine and sewing machine |
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| CN111501217B (en) * | 2019-01-31 | 2022-01-11 | 浙江杰克智能缝制科技有限公司 | Sewing machine and device for lifting presser foot and adjusting needle pitch of sewing machine |
| CN111501216B (en) * | 2019-01-31 | 2022-01-11 | 浙江杰克智能缝制科技有限公司 | Sewing machine trimming, presser foot lifting and needle distance adjusting device and sewing machine |
| CN111501224B (en) * | 2019-01-31 | 2021-11-09 | 杰克缝纫机股份有限公司 | Method for thread trimming, presser foot lifting and needle stitch sealing of sewing machine |
| CN109837662A (en) * | 2019-04-07 | 2019-06-04 | 杰克缝纫机股份有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
| CN110184756B (en) * | 2019-07-02 | 2024-01-30 | 阮健明 | Automatic thread trimming and presser foot lifting device |
| CN110468506A (en) * | 2019-07-26 | 2019-11-19 | 上海鲍麦克斯电子科技有限公司 | A kind of control system of full-automatic flat seaming machine |
| CN115369583A (en) * | 2021-05-18 | 2022-11-22 | 琦星智能科技股份有限公司 | Sewing machine |
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Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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