CN216712431U - Needle pendulum driving structure of sewing machine - Google Patents
Needle pendulum driving structure of sewing machine Download PDFInfo
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- CN216712431U CN216712431U CN202123159262.7U CN202123159262U CN216712431U CN 216712431 U CN216712431 U CN 216712431U CN 202123159262 U CN202123159262 U CN 202123159262U CN 216712431 U CN216712431 U CN 216712431U
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- sewing machine
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Abstract
The utility model discloses a needle swing driving structure of a sewing machine, which comprises a sewing machine frame, wherein a needle rod and a first motor for driving the needle rod to move up and down are arranged on the sewing machine frame, a swing frame and a swing driving assembly for driving the swing frame to swing left and right are arranged on the sewing machine frame, the upper end of the swing frame is rotatably connected with the sewing machine frame, the needle rod is arranged on the swing frame, the swing driving assembly comprises a second motor, a driving gear, a driven gear, a cam, a first connecting rod and a second connecting rod, the middle part of the first connecting rod is rotatably connected with the sewing machine frame, one end of the second connecting rod is hinged with the lower end of the first connecting rod, one side surface of the upper end of the first connecting rod is connected with the cam in an abutting mode, and the other end of the second connecting rod is hinged with the lower end of the swing frame. The utility model realizes the independent driving of the left and right swinging of the needle bar, can randomly control the left and right stop positions of the needle bar, realizes the sewing of different sewing materials and stitches, and improves the applicability of the sewing machine.
Description
Technical Field
The utility model relates to the technical field of sewing machines, in particular to a needle pendulum driving structure of a sewing machine.
Background
The sewing machine is a machine equipment which uses one or more sewing threads to form one or more stitches on the sewing material to make one or more layers of sewing material interweaved or sewed, and can sew fabrics of cotton, hemp, silk, wool, artificial fiber, etc. and products of leather, plastics, paper, etc., and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is fast, and the use is simple and convenient. The existing sewing machine usually adopts the same motor to drive the needle bar to move up and down and swing left and right, can not control the needle bar to swing left and right independently, can not control the left and right staying position of the needle bar at will, and is difficult to adapt to the sewing of more sewing materials and stitches.
SUMMERY OF THE UTILITY MODEL
The utility model provides a needle swing driving structure of a sewing machine aiming at the defects in the prior art, which can realize the independent control of the left and right swing of a needle rod, can randomly control the left and right stop positions of the needle rod and realize the sewing of different sewing materials and stitches.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a needle swing driving structure of a sewing machine comprises a sewing machine frame, wherein a needle rod and a first motor driving the needle rod to move up and down are arranged on the sewing machine frame, a swing frame and a swing driving assembly driving the swing frame to swing left and right are arranged on the sewing machine frame, the upper end of the swing frame is rotatably connected with the sewing machine frame through a first rotating shaft, the needle rod is arranged on the swing frame and can swing left and right along with the swing frame, the swing driving assembly comprises a second motor, a driving gear driven to rotate by the second motor, a driven gear meshed with the driving gear, a cam driven to rotate by the driven gear, a first connecting rod driven to swing by the cam and a second connecting rod driven to move by the first connecting rod, the middle part of the first connecting rod is rotatably connected with the sewing machine frame through a second rotating shaft, one end of the second connecting rod is hinged with the lower end of the first connecting rod, one side surface of first connecting rod upper end is contradicted with the cam and is connected, the other end of second connecting rod is articulated with the lower extreme of swing span.
As a preferable scheme, one end of the second connecting rod, which is far away from the swing frame, is rotatably connected with the lower end of the first connecting rod through a third rotating shaft, and the other end of the second connecting rod is rotatably connected with the lower end of the swing frame through a fourth rotating shaft.
Preferably, the second motor is a stepping motor.
As a preferred scheme, be equipped with gear mounting in the sewing machine frame, be equipped with the gear mounting groove on the gear mounting, the second motor is installed in gear mounting's the outside to the output shaft of second motor passes gear mounting and locates the driving gear connection in the gear mounting groove.
Preferably, the cam is disposed on one side of the driven gear in the axial direction and is fixedly connected with the driven gear.
Preferably, the upper end of the first connecting rod is provided with a recess portion that engages with a circumferential side surface of the cam.
As a preferable scheme, a roller for limiting the rotation angle of the cam is arranged in the gear mounting groove, and the roller is rotatably mounted on the gear mounting frame through a fifth rotating shaft.
Preferably, the gear ratio of the driving gear to the driven gear is 18/52.
As a preferred scheme, the sewing machine frame is further provided with a driving shaft which is transversely arranged, one end of the driving shaft is provided with a driving wheel, the first motor drives the driving wheel to rotate through a driving belt, the other end of the driving shaft is provided with a first connecting piece which can rotate along with the driving shaft, the first connecting piece is hinged with a second connecting piece, and the free end of the second connecting piece is connected with the needle rod.
As a preferred scheme, the gear mounting frame further comprises a controller, a photoelectric sensor used for detecting the rotation angle of the driving shaft is arranged on the lower side of the gear mounting frame, the photoelectric sensor is connected with the controller, and the controller controls the second motor to work according to signals detected by the photoelectric sensor.
Compared with the prior art, the sewing machine has the obvious advantages and beneficial effects, particularly, the independent second motor is arranged, the second motor drives the needle rod to swing left and right through the driving gear and the driven gear, so that the independent driving of the left and right swinging of the needle rod is realized, the left and right stopping positions of the needle rod can be controlled at will, the sewing of different sewing materials and stitches is realized, and the applicability of the sewing machine is improved. Through setting up the gear mounting bracket to can make things convenient for the installation of gear and motor, simple structure, the equipment is convenient.
To more clearly illustrate the structural features and technical means of the present invention and the specific objects and functions attained thereby, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
drawings
FIG. 1 is a schematic view of an inner structure of the sewing machine of the present invention;
FIG. 2 is a schematic view of the needle bar drive arrangement of the present invention;
FIG. 3 is a schematic view of the needle bar side-to-side swing drive configuration of the present invention;
FIG. 4 is a schematic view of a needle bar side-to-side swing drive configuration from another perspective of the present invention;
fig. 5 is a schematic view of an assembly structure of the swing driving assembly of the present invention.
The attached drawings indicate the following:
10. sewing machine frame 11, needle bar 12, swing frame
13. First rotating shaft 14, gear mounting rack 141 and gear mounting groove
15. Photoelectric sensor 20, first motor 21, drive belt
22. Drive shaft 23, drive wheel 24, first connecting piece
25. Second connecting piece 30, second motor 31, driving gear
32. Driven gear 33, cam 34, first connecting rod
341. Concave part 35, second connecting rod 36, second rotating shaft
37. Third rotating shaft 38, fourth rotating shaft 39 and roller
391. And a fifth rotating shaft.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
As shown in fig. 1 to 5, a needle swing driving structure of a sewing machine comprises a sewing machine frame 10, wherein a needle bar 11 and a first motor 20 for driving the needle bar 11 to move up and down are arranged on the sewing machine frame 10, a swing frame 12 and a swing driving assembly for driving the swing frame 12 to swing left and right are arranged on the sewing machine frame 10, the upper end of the swing frame 12 is rotatably connected with the sewing machine frame 10 through a first rotating shaft 13, the needle bar 11 is arranged on the swing frame 12 and can swing left and right along with the swing frame 12, the swing driving assembly comprises a second motor 30, a driving gear 31 driven by the second motor 30 to rotate, a driven gear 32 engaged with the driving gear 31, a cam 33 driven by the driven gear 32 to rotate, a first connecting rod 34 driven by the cam 33 to swing, and a second connecting rod 35 driven by the first connecting rod 34 to move, the middle part of the first connecting rod 34 is rotatably connected with the sewing machine frame 10 through a second rotating shaft 35, one end of the second connecting rod 35 is hinged to the lower end of the first connecting rod 34, one side surface of the upper end of the first connecting rod 34 is connected with the cam 33 in an abutting mode, and the other end of the second connecting rod 35 is hinged to the lower end of the swing frame 12. Specifically, one end of the second connecting rod 35, which is far away from the swing frame 12, is rotatably connected to the lower end of the first connecting rod 34 through a third rotating shaft 37, and the other end of the second connecting rod 35 is rotatably connected to the lower end of the swing frame 12 through a fourth rotating shaft 38. In this embodiment, the gear ratio between the driving gear 31 and the driven gear 32 is 18/52, and in actual use, the gear ratio between the driving gear 31 and the driven gear 32 may be set according to actual needs.
In the present invention, the sewing machine frame 10 is provided with a gear mounting rack 14, the gear mounting rack 14 is provided with a gear mounting groove 141, the second motor 30 is mounted on the outer side of the gear mounting rack 14, and an output shaft of the second motor 30 passes through the gear mounting rack 14 and is connected with a driving gear 31 arranged in the gear mounting groove 141. The cam 33 is provided on one side of the driven gear 32 in the axial direction, and is fixedly connected to the driven gear 32. In this embodiment, the cam 33 is connected to the driven gear 32 by injection molding. The upper end of the first connecting rod 34 is provided with a recess 341 that engages with the circumferential side surface of the cam 33. A roller 39 for limiting the rotation angle of the cam 33 is disposed in the gear mounting groove 141, and the roller 39 is rotatably mounted on the gear mounting bracket 14 through a fifth rotating shaft 391.
The sewing machine is characterized in that a driving shaft 22 transversely arranged is arranged on the sewing machine frame, a driving wheel 23 is arranged at one end of the driving shaft 22, the first motor 20 drives the driving wheel 23 to rotate through a driving belt 21, a first connecting piece 24 capable of rotating along with the driving shaft 22 is arranged at the other end of the driving shaft 22, a second connecting piece 25 is hinged to the first connecting piece 24, and the free end of the second connecting piece 25 is connected with the needle rod 11. The sewing machine frame 10 is further provided with a controller (not shown), the lower side of the gear mounting frame 14 is provided with a photoelectric sensor 15 for detecting the rotation angle of the driving shaft 22, the photoelectric sensor 15 is connected with the controller, and the controller controls the second motor 30 to work according to a signal detected by the photoelectric sensor 15. In this embodiment, the first motor 20 and the second motor 30 are both stepping motors.
In conclusion, the independent second motor is arranged, so that the second motor drives the needle rod to swing left and right through the driving gear and the driven gear, the independent driving of the left and right swinging of the needle rod is realized, the left and right stop positions of the needle rod can be controlled at will, the sewing of different sewing materials and stitches is realized, and the applicability of the sewing machine is improved. Through setting up the gear mounting bracket to can make things convenient for the installation of gear and motor, simple structure, the equipment is convenient.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the present invention, so that any modifications, equivalents, improvements, etc. made to the above embodiment according to the present invention are within the scope of the present invention.
Claims (10)
1. A needle swing driving structure of a sewing machine comprises a sewing machine frame, wherein a first motor which is used for driving a needle rod and drives the needle rod to move up and down is arranged on the sewing machine frame, the needle swing driving assembly is arranged on the sewing machine frame and drives a swing frame to swing left and right, the upper end of the swing frame is rotatably connected with the sewing machine frame through a first rotating shaft, the needle rod is arranged on the swing frame and can swing left and right along with the swing frame, the swing driving assembly comprises a second motor, a driving gear which is driven to rotate by the second motor, a driven gear which is meshed with the driving gear, a cam which is driven to rotate by the driven gear, a first connecting rod which is driven to swing by the cam and a second connecting rod which is driven to move by the first connecting rod, the middle part of the first connecting rod is rotatably connected with the sewing machine frame through a second rotating shaft, one end of the second connecting rod is hinged with the lower end of the first connecting rod, one side surface of the upper end of the first connecting rod is in abutting connection with the cam, and the other end of the second connecting rod is hinged to the lower end of the swing frame.
2. The needle swing driving structure of a sewing machine according to claim 1, wherein one end of the second link lever remote from the swing frame is rotatably connected to the lower end of the first link lever by a third rotating shaft, and the other end of the second link lever is rotatably connected to the lower end of the swing frame by a fourth rotating shaft.
3. The needle swing driving structure of a sewing machine according to claim 1, wherein the second motor is a stepping motor.
4. The needle swing driving structure of a sewing machine according to claim 1, wherein a gear mounting rack is provided on the sewing machine frame, a gear mounting groove is provided on the gear mounting rack, the second motor is mounted on an outer side of the gear mounting rack, and an output shaft of the second motor passes through the gear mounting rack and is connected with a driving gear provided in the gear mounting groove.
5. The needle swing driving structure of a sewing machine according to claim 4, wherein the cam is provided at one side in the axial direction of the driven gear and is fixedly connected to the driven gear.
6. The needle swing driving structure of a sewing machine according to claim 5, wherein the upper end of the first connecting rod is provided with a recess portion which engages with a peripheral side surface of the cam.
7. The needle swing driving structure of a sewing machine according to any one of claims 4 to 6, wherein a roller for limiting a rotation angle of the cam is provided in the gear mounting groove, and the roller is rotatably mounted on the gear mounting bracket by a fifth rotating shaft.
8. The needle swing driving structure of a sewing machine according to claim 1, wherein the gear ratio of the driving gear to the driven gear is 18/52.
9. The needle swing driving structure of a sewing machine according to claim 4, wherein the sewing machine frame is further provided with a driving shaft arranged transversely, one end of the driving shaft is provided with a driving wheel, the first motor drives the driving wheel to rotate through a driving belt, the other end of the driving shaft is provided with a first connecting piece which can rotate along with the driving shaft, the first connecting piece is hinged with a second connecting piece, and the free end of the second connecting piece is connected with the needle rod.
10. The needle swing driving structure of a sewing machine according to claim 9, further comprising a controller, wherein a photoelectric sensor for detecting a rotation angle of the driving shaft is provided at a lower side of the gear mounting bracket, the photoelectric sensor is connected to the controller, and the controller controls the second motor to operate according to a signal detected by the photoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123159262.7U CN216712431U (en) | 2021-12-14 | 2021-12-14 | Needle pendulum driving structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123159262.7U CN216712431U (en) | 2021-12-14 | 2021-12-14 | Needle pendulum driving structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216712431U true CN216712431U (en) | 2022-06-10 |
Family
ID=81885734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123159262.7U Active CN216712431U (en) | 2021-12-14 | 2021-12-14 | Needle pendulum driving structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216712431U (en) |
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2021
- 2021-12-14 CN CN202123159262.7U patent/CN216712431U/en active Active
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