CN217324535U - Lift presser foot and trimming device and sewing machine - Google Patents
Lift presser foot and trimming device and sewing machine Download PDFInfo
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- CN217324535U CN217324535U CN202221382412.2U CN202221382412U CN217324535U CN 217324535 U CN217324535 U CN 217324535U CN 202221382412 U CN202221382412 U CN 202221382412U CN 217324535 U CN217324535 U CN 217324535U
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Abstract
The utility model belongs to the technical field of sewing equipment, in particular to a presser foot lifting and thread cutting device and a sewing machine; the presser foot lifting and trimming device comprises: a trimming lifting presser foot crank is arranged on an output shaft of the driving motor, one end of the trimming lifting presser foot crank is fixedly connected with the output shaft, the other end of the trimming lifting presser foot crank is arranged in a suspended manner, the trimming lifting presser foot crank is in transmission connection with the trimming lifting presser foot mechanism through a trimming transmission mechanism, and the trimming lifting presser foot crank is in transmission connection with the trimming mechanism through a trimming transmission mechanism; when the output shaft of the driving motor rotates clockwise, the thread cutting and presser foot lifting crank drives the presser foot lifting transmission mechanism to act, and finally drives the presser foot lifting mechanism to act, and the thread cutting mechanism does not act; when the output shaft of the driving motor rotates anticlockwise, the trimming lifting presser foot crank drives the trimming transmission mechanism to act and finally drives the trimming mechanism to act, and the presser foot lifting mechanism does not act; the utility model discloses lift presser foot and trimming by the drive motor drive respectively, simplified the structure, the cost is reduced, and transmission efficiency is high simultaneously, and stability is good.
Description
The technical field is as follows:
the utility model belongs to the technical field of make up equipment, refer in particular to a lift presser foot and trimming device and sewing machine.
Background art:
a sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. At present, most sewing machines are provided with automatic presser foot lifting devices. The sewing thread is arranged on the sewing material in a penetrating way by controlling the lifting and falling of the presser foot, so that the sewing is realized.
The sewing machine comprises a presser foot lifting mechanism and a thread trimming mechanism. The existing presser foot lifting mechanism and the existing thread trimming mechanism are driven by mutually independent power parts, so that the defects of high cost, complex structure and the like are caused.
The invention content is as follows:
the utility model aims at providing a simplify structure, reduce cost lift presser foot and trimming device and sewing machine.
The utility model discloses a realize like this:
one of the purposes of the utility model is to provide a lift presser foot and trimming device, including lifting presser foot mechanism, trimming mechanism, driving motor, be provided with trimming on driving motor's the output shaft and lift presser foot crank, trimming lifts one end of presser foot crank and links firmly with the output shaft mutually, the unsettled setting of the other end, trimming lifts presser foot crank and lifts presser foot mechanism transmission through lifting presser foot drive mechanism and is connected, and trimming lifts presser foot crank and is connected with trimming mechanism transmission through trimming drive mechanism; when the output shaft of the driving motor rotates clockwise, the trimming pressure foot lifting crank drives the pressure foot lifting transmission mechanism to act, and finally drives the pressure foot lifting mechanism to act, and the trimming mechanism does not act; when the output shaft of the driving motor rotates anticlockwise, the trimming lifting presser foot crank drives the trimming transmission mechanism to act and finally drives the trimming mechanism to act, and the presser foot lifting mechanism does not act.
In the presser foot lifting mechanism, the presser foot lifting transmission mechanism comprises a presser foot lifting shaft, a first presser foot lifting crank and a second presser foot lifting crank, one end of the first presser foot lifting crank is fixedly connected with the presser foot lifting shaft, the other end of the first presser foot lifting crank is arranged in a suspended manner, one end of the second presser foot lifting crank is fixedly connected with the presser foot lifting shaft, the other end of the second presser foot lifting crank is connected with the presser foot lifting mechanism, the output shaft rotates clockwise to drive the trimming presser foot lifting crank to rotate towards the first presser foot lifting crank direction and abut against the first presser foot lifting crank shaft to drive the presser foot lifting shaft and the second presser foot lifting crank to swing anticlockwise to lift the presser foot, and when the output shaft rotates anticlockwise, the trimming presser foot lifting crank rotates towards the direction far away from the first presser foot lifting crank and is not connected with the first presser foot lifting crank.
In the presser foot lifting mechanism, a first roller or a first shaft sleeve is arranged on one side surface of the trimming presser foot lifting crank, which is close to the first presser foot lifting crank, the first roller or the first shaft sleeve is arranged on the first presser foot lifting crank through a shaft position screw, and the first roller or the first shaft sleeve can be abutted against the first presser foot lifting crank.
In the above-mentioned presser foot lifting mechanism, the presser foot lifting mechanism includes a presser foot lifting ejector rod, the upper end of the presser foot lifting ejector rod is hinged to the first connecting end of the rear presser foot lifting lever, the lower end of the presser foot lifting ejector rod is connected to the second presser foot lifting crank, the rear presser foot lifting lever is rotatably connected to the casing through the second connecting end, the third connecting end of the rear presser foot lifting lever is connected to the first connecting end of the front presser foot lifting lever through a presser foot lifting pull rod, the front presser foot lifting lever is rotatably connected to the casing through the second connecting end, the third connecting end of the front presser foot lifting lever is connected to the press rod guide frame through a presser foot lifting plate, and the press rod guide frame is connected to the presser foot rod.
In the presser foot lifting mechanism, the second presser foot lifting crank is provided with an open slot, and the lower end of the presser foot lifting ejector rod is arranged in the open slot and is rotationally connected with the second presser foot lifting crank through a pin shaft.
In the presser foot lifting mechanism, the thread cutting transmission mechanism comprises a thread cutting connecting rod, a thread cutting driving shaft, a first thread cutting crank and a thread cutting driving crank connected with the thread cutting mechanism, one end of the first trimming crank is fixedly connected with the trimming drive shaft, the other end of the first trimming crank is arranged in a suspended manner, one end of the trimming connecting rod is hinged with the suspended end of the trimming lifting and pressing pin crank, the other end of the trimming connecting rod is hinged with the suspended end of the first trimming crank, a second trimming crank is also arranged on the trimming driving shaft, one end of the second trimming crank is fixedly connected with the trimming driving shaft, the other end is arranged in a suspended manner, when the thread cutting driving shaft rotates clockwise, the second thread cutting crank drives the thread cutting driving crank to rotate and finally drives the thread cutting mechanism to act, when the trimming drive shaft rotates anticlockwise, the second trimming crank rotates towards the direction far away from the trimming drive crank, and the second trimming crank is not connected with the trimming drive crank.
In the presser foot lifting mechanism, the second trimming crank is provided with a second roller or a second shaft sleeve, the second roller or the second shaft sleeve is connected with the second trimming crank through a pin shaft, and the second roller or the second shaft sleeve can be abutted against the trimming drive crank.
In the above presser foot lifting mechanism, the thread cutting mechanism includes a thread cutting shaft, a cutter driving crank is disposed at one end of the thread cutting shaft, one end of the cutter driving crank is fixedly connected to the thread cutting shaft, the other end of the cutter driving crank is hinged to one end of a long connecting rod, the other end of the long connecting rod is connected to a movable cutter frame, a movable cutter is disposed on the movable cutter frame, a stationary cutter matched with the movable cutter for thread cutting is disposed on a housing on one side of the movable cutter, and the thread cutting driving crank is disposed on the thread cutting shaft.
In the presser foot lifting mechanism, the driving motor is a stepping motor.
Another object of the present invention is to provide a sewing machine, which comprises the above presser foot lifting and thread trimming device.
Compared with the prior art, the utility model outstanding advantage is:
1. the utility model discloses lift presser foot and trimming by the drive motor drive respectively, compare in independent power spare driven structure among the prior art, simplified the structure, the cost is reduced, and transmission efficiency is high simultaneously, and stability is good.
2. The utility model discloses can reach the purpose that the presser foot height was lifted in control through the turned angle of control driving motor's output shaft, can be applicable to the occasion of making up of different thickness powders.
3. The utility model discloses the trimming is lifted presser foot crank and is connected for the contact between first presser foot crank, the second trimming crank of lifting, greatly reduced the assembly degree of difficulty between each spare part.
Description of the drawings:
fig. 1 is one of the schematic perspective views of the present invention;
fig. 2 is a second perspective view of the present invention.
In the figure: 1. a drive motor; 2. an output shaft; 3. trimming and lifting a presser foot crank; 4. lifting and pressing the foot shaft; 5. a first presser foot lifting crank; 6. a second presser foot lifting crank; 7. a first bushing; 8. lifting a presser foot ejector rod; 9. lifting a rear lever of the presser foot; 10. lifting a presser foot pull rod; 11. lifting a presser foot front lever; 12. a presser foot lifting plate; 13. a compression bar guide frame; 14. a presser bar; 15. a presser foot; 16. an open slot; 17. a pin shaft; 18. a trimming connecting rod; 19. a thread trimming drive shaft; 20. a first trimming crank; 21. a trimming drive crank; 22. a second trimming crank; 23. a second shaft sleeve; 24. a thread cutting shaft; 25. the cutter drives the crank; 26. a long connecting rod; 27. a movable tool rest; 28. moving a knife; 29. and (5) fixing the cutter.
The specific implementation mode is as follows:
the invention will now be further described with reference to specific embodiments, with reference to figures 1-2:
one of the purposes of the utility model is to provide a lift presser foot and trimming device, should lift presser foot and trimming device include lifting presser foot mechanism, trimming mechanism, driving motor 1, be provided with trimming on the output shaft 2 of driving motor 1 and lift presser foot crank 3, trimming lifts one end of presser foot crank 3 and links firmly with output shaft 2 mutually, the unsettled setting of the other end, trimming lifts presser foot crank 3 and lifts presser foot mechanism transmission through lifting presser foot drive mechanism and is connected, and trimming lifts presser foot crank 3 and is connected with trimming mechanism transmission through trimming drive mechanism; when the output shaft 2 of the driving motor 1 rotates clockwise, the trimming pressure foot lifting crank 3 rotates along with the output shaft 2 to drive the pressure foot lifting transmission mechanism to act, and finally the pressure foot lifting mechanism is driven to act to realize pressure foot lifting, and at the moment, the trimming mechanism does not act; when the output shaft 2 of the driving motor 1 rotates anticlockwise, the trimming lifting presser foot crank 3 rotates along with the output shaft 2, the trimming transmission mechanism is driven to act, the trimming mechanism is finally driven to act to trim, and at the moment, the presser foot lifting mechanism does not act.
The utility model discloses can drive respectively by driving motor 1 and lift the action of presser foot and trimming, mutually noninterfere has effectively practiced thrift whole volume, has optimized the structure, the cost is reduced, and transmission efficiency is high, and stability is good. In the present invention, the driving motor 1 is preferably a stepping motor. Of course, a servo motor or the like may be used.
Particularly, lift presser foot drive mechanism and lift presser foot crank 6 including lifting presser foot axle 4, first presser foot crank 5 and the second of lifting, the first one end of lifting presser foot crank 5 with lift presser foot axle 4 and link firmly mutually, the unsettled setting of the other end, the second lifts presser foot crank 6's one end and lifts presser foot axle 4 and link firmly mutually, the presser foot mechanism is connected to the other end, output shaft 2 clockwise rotates, drives the trimming and lifts presser foot crank 3 and lift presser foot crank 5 direction rotation and support and lift presser foot axle 4, the second and lift presser foot crank 6 counter-clockwise swing and lift the presser foot by the drive on first presser foot crank 5 of lifting, when output shaft 2 counter-clockwise rotates, the trimming lifts presser foot crank 3 and removes presser foot crank 5 direction rotation towards keeping away from first to lift presser foot crank 5 with first and do not have the connection, lift presser foot axle 4 and also can not take place the rotation.
As shown in fig. 2, a first roller or a first shaft sleeve 7 is disposed on a side surface of the trimming presser foot lifting crank 3 close to the first presser foot lifting crank 5, the first roller or the first shaft sleeve 7 is disposed on the first presser foot lifting crank 5 through a shaft position screw, and the first roller or the first shaft sleeve 7 can abut against the first presser foot lifting crank 5. The first roller or the first shaft sleeve 7 can be in rolling connection with the corresponding surface of the first pressure lifting and pressing foot crank 5, and the friction force between the first roller or the first shaft sleeve 7 and the first pressure lifting and pressing foot crank 5 is small, so that the clamping phenomenon cannot occur during abutting.
Specifically, the presser foot lifting mechanism comprises a presser foot lifting ejector rod 8, the upper end of the presser foot lifting ejector rod 8 is hinged to a first connecting end of a presser foot lifting rear lever 9, the lower end of the presser foot lifting ejector rod is connected with a second presser foot lifting crank 6, the presser foot lifting rear lever 9 is rotatably connected to the machine shell through a second connecting end, a third connecting end of the presser foot lifting rear lever 9 is connected with a first connecting end of a presser foot lifting front lever 11 through a presser foot lifting pull rod 10, the presser foot lifting front lever 11 is rotatably connected to the machine shell through a second connecting end, a third connecting end of the presser foot lifting front lever 11 is connected with a pressure lever guide frame 13 through a presser foot lifting plate 12, and the pressure lever guide frame 13 is connected to a presser foot rod 14. The lower end of the presser bar 14 is provided with a presser foot 15.
As shown in fig. 1 and 2, the other end of the second presser foot lifting crank 6 is connected to a presser foot lifting mechanism, which has the following specific structure: an open groove 16 is formed in the second presser foot lifting crank 6, and the lower end of the presser foot lifting mandril 8 is arranged in the open groove 16 and is rotatably connected with the second presser foot lifting crank 6 through a pin shaft 17.
When the presser foot is lifted, the second presser foot lifting crank 6 jacks up the presser foot lifting ejector rod 8.
The utility model discloses can control the height of lifting the presser foot through the turned angle of control driving motor 1's output shaft 2 to be applicable to the occasion of making up of different thickness surface fabrics.
As shown in fig. 1 and fig. 2, the thread cutting transmission mechanism includes a thread cutting connecting rod 18, a thread cutting driving shaft 19, a first thread cutting crank 20 and a thread cutting driving crank 21 connected to the thread cutting mechanism, one end of the first thread cutting crank 20 is fixedly connected to the thread cutting driving shaft 19, the other end is suspended, one end of the thread cutting connecting rod 18 is hinged to the suspended end of the thread cutting lifting/pressing pin crank 3, the other end is hinged to the suspended end of the first thread cutting crank 20, a second thread cutting crank 22 is further disposed on the thread cutting driving shaft 19, one end of the second thread cutting crank 22 is fixedly connected to the thread cutting driving shaft 19, the other end is suspended, when the thread cutting driving shaft 19 rotates clockwise, the second thread cutting crank 22 drives the thread cutting driving crank 21 to rotate and finally drive the thread cutting mechanism to move, when the thread cutting driving shaft 19 rotates, the second thread cutting crank 22 rotates in a direction away from the thread cutting driving crank 21 counterclockwise, and is not connected to the trimming drive crank 21.
In order to prevent the wire cutting crank from being stuck, a second roller or a second shaft sleeve 23 is arranged on the second wire cutting crank 22, the second roller or the second shaft sleeve 23 is connected with the second wire cutting crank 22 through a pin shaft, and the second roller or the second shaft sleeve 23 can abut against the wire cutting driving crank 21.
When trimming, the second roller or second bushing 23 abuts against the trimming driving crank 21 to drive
Specifically, the thread cutting mechanism includes a thread cutting spool 24, and the thread cutting spool 24 is disposed in parallel with the thread cutting drive shaft 19. A cutter driving crank 25 is arranged at one end of the thread cutting shaft 24, one end of the cutter driving crank 25 is fixedly connected with the thread cutting shaft 24, the other end of the cutter driving crank 25 is hinged with one end of a long connecting rod 26, the other end of the long connecting rod 26 is connected with a movable cutter frame 27, a movable cutter 28 is arranged on the movable cutter frame 27, a fixed cutter 29 matched with the movable cutter 28 for thread cutting is arranged on a shell on one side of the movable cutter 28, and the thread cutting driving crank 21 is arranged on the thread cutting shaft 24.
Another object of the utility model is to provide a sewing machine, including foretell lift presser foot and trimming device.
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 utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a lift presser foot and trimming device, is including lifting presser foot mechanism, trimming mechanism, driving motor (1), its characterized in that: a trimming lifting and pressing foot crank (3) is arranged on an output shaft (2) of the driving motor (1), one end of the trimming lifting and pressing foot crank (3) is fixedly connected with the output shaft (2), the other end of the trimming lifting and pressing foot crank is arranged in a suspended mode, the trimming lifting and pressing foot crank (3) is in transmission connection with a lifting and pressing foot mechanism through a lifting and pressing foot transmission mechanism, and the trimming lifting and pressing foot crank (3) is in transmission connection with the trimming mechanism through a trimming transmission mechanism; when an output shaft (2) of the driving motor (1) rotates clockwise, the trimming pressure foot lifting crank (3) drives the pressure foot lifting transmission mechanism to act and finally drives the pressure foot lifting mechanism to act, and the trimming mechanism does not act; when an output shaft (2) of the driving motor (1) rotates anticlockwise, the trimming lifting presser foot crank (3) drives the trimming transmission mechanism to act and finally drives the trimming mechanism to act, and the lifting presser foot mechanism does not act.
2. A presser foot lifting and trimming apparatus according to claim 1, wherein: the presser foot lifting transmission mechanism comprises a presser foot lifting shaft (4), a first presser foot lifting crank (5) and a second presser foot lifting crank (6), one end of the first pressure raising foot crank (5) is fixedly connected with the pressure raising foot shaft (4), the other end is arranged in a suspended way, one end of the second presser foot lifting crank (6) is fixedly connected with the presser foot lifting shaft (4), the other end is connected with the presser foot mechanism, the output shaft (2) rotates clockwise to drive the trimming presser foot lifting crank (3) to rotate towards the first presser foot lifting crank (5) and abut against the first presser foot lifting crank (5) shaft to drive the presser foot lifting shaft (4) and the second presser foot lifting crank (6) to swing anticlockwise to lift the presser foot, when the output shaft (2) rotates anticlockwise, the trimming pressure foot lifting crank (3) rotates towards the direction far away from the first pressure foot lifting crank (5) and is not connected with the first pressure foot lifting crank (5).
3. A presser foot lifting and trimming apparatus according to claim 2, wherein: a first roller or a first shaft sleeve (7) is arranged on one side face, close to the first presser foot lifting crank (5), of the trimming presser foot lifting crank (3), the first roller or the first shaft sleeve (7) is arranged on the first presser foot lifting crank (5) through a shaft position screw, and the first roller or the first shaft sleeve (7) can be abutted against the first presser foot lifting crank (5).
4. A presser foot lifting and trimming apparatus according to claim 2 or 3, wherein: the presser foot lifting mechanism comprises a presser foot lifting ejector rod (8), the upper end of the presser foot lifting ejector rod (8) is hinged to a first connecting end of a presser foot lifting rear lever (9), the lower end of the presser foot lifting ejector rod is connected with a second presser foot lifting crank (6), the presser foot lifting rear lever (9) is rotatably connected to the machine shell through a second connecting end, a third connecting end of the presser foot lifting rear lever (9) is connected with a first connecting end of a presser foot lifting front lever (11) through a presser foot lifting pull rod (10), the presser foot lifting front lever (11) is rotatably connected to the machine shell through a second connecting end, a third connecting end of the presser foot lifting front lever (11) is connected with a pressing rod guide frame (13) through a presser foot lifting plate (12), and the pressing rod guide frame (13) is connected to a presser foot rod (14).
5. A presser foot lifting and trimming apparatus according to claim 4, wherein: an open slot (16) is formed in the second presser foot lifting crank (6), and the lower end of the presser foot lifting ejector rod (8) is arranged in the open slot (16) and is rotatably connected with the second presser foot lifting crank (6) through a pin shaft (17).
6. A presser foot lifting and trimming apparatus according to claim 1, wherein: the trimming transmission mechanism comprises a trimming connecting rod (18), a trimming driving shaft (19), a first trimming crank (20) and a trimming driving crank (21) connected with the trimming mechanism, wherein one end of the first trimming crank (20) is fixedly connected with the trimming driving shaft (19), the other end of the first trimming crank is arranged in a suspended manner, one end of the trimming connecting rod (18) is hinged with the suspended end of the trimming lifting and pressing crank (3), the other end of the trimming connecting rod is hinged with the suspended end of the first trimming crank (20), a second trimming crank (22) is further arranged on the trimming driving shaft (19), one end of the second trimming crank (22) is fixedly connected with the trimming driving shaft (19), the other end of the second trimming crank is arranged in a suspended manner, when the trimming driving shaft (19) rotates clockwise, the second trimming crank (22) drives the trimming driving crank (21) to rotate to finally drive the trimming mechanism to act, and when the trimming driving shaft (19) rotates anticlockwise, the second trimming crank (22) rotates towards the direction far away from the trimming driving crank (21) and is not connected with the trimming driving crank (21).
7. A presser foot lifting and trimming apparatus according to claim 6, wherein: and a second roller or a second shaft sleeve (23) is arranged on the second trimming crank (22), the second roller or the second shaft sleeve (23) is connected with the second trimming crank (22) through a pin shaft, and the second roller or the second shaft sleeve (23) can be abutted against the trimming drive crank (21).
8. A presser foot lifting and trimming apparatus according to claim 6 or 7, wherein: the trimming mechanism includes trimming axle (24), is provided with cutter driving crank (25) in the one end of trimming axle (24), and the one end of cutter driving crank (25) links firmly mutually with trimming axle (24), and the other end is articulated mutually with the one end of long connecting rod (26), the other end and the movable knife rest (27) of long connecting rod (26) are connected, be provided with on movable knife rest (27) and move sword (28), be provided with on the casing that moves sword (28) one side and move stationary knife (29) of sword (28) cooperation trimming, trimming driving crank (21) set up on trimming axle (24).
9. A presser foot lifting and trimming apparatus according to claim 1, wherein: the driving motor (1) is a stepping motor.
10. A sewing machine characterized by: comprising a presser foot and thread trimming device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382412.2U CN217324535U (en) | 2022-05-30 | 2022-05-30 | Lift presser foot and trimming device and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382412.2U CN217324535U (en) | 2022-05-30 | 2022-05-30 | Lift presser foot and trimming device and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217324535U true CN217324535U (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221382412.2U Active CN217324535U (en) | 2022-05-30 | 2022-05-30 | Lift presser foot and trimming device and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217324535U (en) |
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2022
- 2022-05-30 CN CN202221382412.2U patent/CN217324535U/en active Active
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