CN216193264U - Overedger and trimming and presser foot lifting mechanism thereof - Google Patents
Overedger and trimming and presser foot lifting mechanism thereof Download PDFInfo
- Publication number
- CN216193264U CN216193264U CN202122891728.6U CN202122891728U CN216193264U CN 216193264 U CN216193264 U CN 216193264U CN 202122891728 U CN202122891728 U CN 202122891728U CN 216193264 U CN216193264 U CN 216193264U
- Authority
- CN
- China
- Prior art keywords
- presser foot
- trimming
- foot lifting
- cam
- thread trimming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The utility model belongs to the technical field of overlock machines, in particular to an overlock machine and a trimming and presser foot lifting mechanism thereof, which comprise a machine shell, a presser foot arm crankshaft and a trimming driving shaft, wherein the machine shell is provided with a driving motor; when the output shaft of the driving motor rotates reversely, the presser foot lifting mechanism performs the action of lifting the presser foot and the thread trimming mechanism does not perform the action. The utility model utilizes the cam structure of the presser foot lifting cam and the thread trimming cam, has simple structure and ingenious and reasonable design, and the thread trimming mechanism and the presser foot lifting mechanism are respectively driven by one driving source, thereby having low cost and small occupied space.
Description
The technical field is as follows:
the utility model belongs to the technical field of overedgers, and particularly relates to an overedger and a trimming and presser foot lifting mechanism thereof.
Background art:
along with the continuous improvement of the automation degree of the overedger, the existing overedger generally has an automatic thread trimming mechanism and an automatic presser foot lifting mechanism, and the automatic thread trimming action and the automatic presser foot lifting action can be respectively realized, so that the sewing time is effectively saved, and the working efficiency is improved. However, the automatic thread cutting mechanism and the automatic presser foot lifting mechanism are driven by two driving sources respectively, the common driving sources are an electromagnet and an electromagnetic valve, and obviously, the two driving sources are used for driving the thread cutting action and the presser foot lifting action respectively, so that the problems of high cost, large occupied space, complex installation, high failure rate and the like exist.
The utility model content is as follows:
the utility model aims to provide a overedger and a thread trimming and presser foot lifting mechanism thereof, wherein the thread trimming mechanism and the presser foot lifting mechanism are respectively driven by a driving source, and the overedger is simple in structure, low in cost and small in occupied space.
The utility model is realized by the following steps:
one of the purposes of the utility model is to provide a thread trimming and presser foot lifting mechanism of a overedger, which comprises a machine shell, a presser foot arm crank shaft and a thread trimming driving shaft, wherein the presser foot arm crank shaft and the thread trimming driving shaft are arranged on the machine shell, the presser foot arm crank shaft rotates in the circumferential direction to drive the presser foot lifting mechanism to perform the action of presser foot lifting, the thread trimming driving shaft slides in the axial direction to drive the thread trimming mechanism to perform the action of thread trimming, the shell is provided with a driving motor, an output shaft of the driving motor is fixedly sleeved with a presser foot lifting cam and a thread trimming cam, the presser foot arm crank shaft is fixedly connected with one end of the presser foot lifting lever, the other end of the presser foot lifting lever is abutted against the outer wheel surface of the presser foot lifting cam through the elastic force of the first resetting elastic piece, the thread trimming driving shaft is provided with a linkage piece, the linkage piece abuts against the outer wheel surface of the thread trimming cam through the elastic force of the reset elastic piece II, and when the output shaft of the driving motor rotates in the positive direction, the thread trimming mechanism performs thread trimming action and the presser foot lifting mechanism does not perform action; when the output shaft of the driving motor rotates reversely, the presser foot lifting mechanism performs the action of lifting the presser foot and the thread trimming mechanism does not perform the action.
In the trimming and presser foot lifting mechanism of the overedger, the trimming mechanism comprises a trimming rotating shaft rotating on the shell and a movable knife arranged at the front end of the trimming rotating shaft, the rear end of the trimming rotating shaft is in transmission connection with the linkage push block through the connecting rod assembly, and the linkage push block is fixedly sleeved on the trimming driving shaft.
In the thread trimming and presser foot lifting mechanism of the overedger, the linkage piece is a linkage push block; or the linkage part is a fixed push block fixedly sleeved on the thread cutting driving shaft.
In the trimming and presser foot lifting mechanism of the overedger, the linkage piece and the presser foot lifting lever are both rotatably connected with the rolling bearings, the linkage piece is connected to the outer wheel surface of the trimming cam in a rolling manner through the rolling bearings, and the presser foot lifting lever is connected to the outer wheel surface of the presser foot lifting cam in a rolling manner through the rolling bearings.
In the trimming and presser foot lifting mechanism of the overedger, a sliding groove is vertically arranged on the machine shell, and a sliding guide part which is connected in the sliding groove in a sliding manner is arranged on the linkage part.
In the trimming and presser foot lifting mechanism of the overedger, the end part of the trimming driving shaft is fixedly sleeved with the positioning ring sleeve, the second reset elastic part is a compression spring sleeved on the trimming driving shaft, and one end of the compression spring is abutted against the positioning ring sleeve while the other end is abutted against the machine shell.
In the trimming and presser foot lifting mechanism of the overedger, the presser foot lifting mechanism comprises a presser foot arm, the front end of the presser foot arm is provided with the presser foot, and the rear end of the presser foot arm is connected with a presser foot arm crank shaft.
In the trimming and presser foot lifting mechanism of the overedger, the presser arm crankshaft is rotatably connected to the shell through the shaft sleeve, the first reset elastic part is a reset torsion spring sleeved on the shaft sleeve, one end of the reset torsion spring is abutted against one side wall of the presser foot lifting lever, and the other end of the reset torsion spring is abutted against the shell.
In the thread trimming and presser foot lifting mechanism of the overedger, the output shaft of the driving motor is fixedly sleeved with the fixed sleeve, the thread trimming and presser foot lifting cam and the thread trimming cam are arranged on the fixed sleeve, and the thread trimming and presser foot lifting cam, the thread trimming cam and the fixed sleeve are of an integrated structure.
Another object of the utility model is to provide an overlock machine, which comprises the thread trimming and presser foot lifting mechanism of the overlock machine.
Compared with the prior art, the utility model has the outstanding advantages that:
according to the utility model, by means of the cam structure of the presser foot lifting cam and the thread trimming cam, when the output shaft of the driving motor rotates in the forward direction, the thread trimming cam rotates and pushes the thread trimming driving shaft to drive the thread trimming mechanism to perform thread trimming action, and at the moment, the presser foot lifting cam rotates but does not drive the presser foot lifting lever to rotate; when the output shaft of the driving motor rotates reversely, the presser foot lifting cam rotates and pushes the presser foot lifting lever to drive the presser foot lifting mechanism to perform presser foot lifting action, and the trimming cam rotates without driving the trimming driving shaft to slide.
Description of the drawings:
FIG. 1 is a perspective view of a overedger according to a first embodiment of the utility model;
fig. 2 is a first perspective view of a trimming and presser foot lifting mechanism according to a first embodiment of the present invention;
fig. 3 is a perspective view of a thread trimming and presser foot lifting mechanism according to a first embodiment of the present invention;
fig. 4 is a perspective view of a thread trimming and presser foot lifting mechanism according to a second embodiment of the present invention.
In the figure: 1. a housing; 2. a presser foot arm crank shaft; 3. a thread trimming drive shaft; 4. a drive motor; 5. lifting a presser foot cam; 6. a trimming cam; 7. lifting a presser foot lever; 8. a thread cutting rotating shaft; 9. moving a knife; 10. linkage push block; 11. fixing the push block; 12. a rolling bearing; 13. a slide guide portion; 14. a positioning ring sleeve; 15. a compression spring; 16. a presser foot arm; 17. a presser foot; 18. a shaft sleeve; 19. a return torsion spring; 20. fixing a sleeve; 21. a first connecting rod; 22. and a second connecting rod.
The specific implementation mode is as follows:
the utility model will now be further described by way of specific examples, with reference to figures 1 to 4:
the first embodiment is as follows:
a trimming and presser foot lifting mechanism of a overedger comprises a machine shell 1, and a presser foot arm crank shaft 2 and a trimming drive shaft 3 which are arranged on the machine shell 1, wherein the presser foot arm crank shaft 2 rotates in the circumferential direction to drive the presser foot lifting mechanism to perform presser foot lifting action, the trimming drive shaft 3 slides in the axial direction to drive the trimming mechanism to perform trimming action, a drive motor 4 is arranged on the machine shell 1, a presser foot lifting cam 5 and a trimming cam 6 are fixedly sleeved on an output shaft of the drive motor 4, the presser foot arm crank shaft 2 is fixedly connected with one end of a presser foot lifting lever 7, the other end of the presser foot lifting lever 7 abuts against the outer wheel surface of the presser foot lifting cam 5 through the elastic force of a first reset elastic piece, a linkage piece is arranged on the trimming drive shaft 3 and abuts against the outer wheel surface of the trimming cam 6 through the elastic force of a second reset elastic piece, and when the output shaft of the drive motor 4 rotates in the positive direction, the trimming mechanism performs trimming action, The presser foot lifting mechanism does not act; when the output shaft of the driving motor 4 rotates reversely, the presser foot lifting mechanism performs the presser foot lifting action and the thread cutting mechanism does not operate.
Namely, by means of the cam structure of the presser foot lifting cam 5 and the thread trimming cam 6, when the output shaft of the driving motor 4 rotates in the positive direction, the thread trimming cam 6 rotates and pushes the thread trimming driving shaft 3 to drive the thread trimming mechanism to perform thread trimming action, and at the moment, the presser foot lifting cam 5 rotates but does not drive the presser foot lifting lever 7 to rotate; when the output shaft of the driving motor 4 rotates reversely, the presser foot lifting cam 5 rotates and pushes the presser foot lifting lever 7 to drive the presser foot lifting mechanism to perform presser foot lifting action, and the thread trimming cam 6 rotates without driving the thread trimming driving shaft 3 to slide.
Furthermore, in this embodiment, the thread trimming mechanism adopts the following specific structure: the thread cutting mechanism comprises a thread cutting rotating shaft 8 and a movable knife 9, wherein the thread cutting rotating shaft 8 rotates on the shell, the movable knife 9 is arranged at the front end of the thread cutting rotating shaft 8, the rear end of the thread cutting rotating shaft 8 is in transmission connection with a linkage push block 10 through a connecting rod assembly, and the linkage push block 10 is fixedly sleeved on the thread cutting driving shaft 3.
In this embodiment, the connecting rod assembly includes a first connecting rod 21 having one end fixed to the trimming rotating shaft 8, the other end of the first connecting rod 21 is hinged to one end of a second connecting rod 22, and the other end of the second connecting rod 22 is hinged to the linkage pushing block 10.
Meanwhile, in order to enable the linkage part to drive the trimming drive shaft 3 to axially slide, the linkage part is a fixed push block 11 fixedly sleeved on the trimming drive shaft 3. In order to further improve the axial sliding stability of the trimming drive shaft 3, a sliding groove is vertically formed in the housing 1, and a sliding guide portion 13 slidably connected in the sliding groove is formed in the linkage.
Furthermore, in order to avoid abrasion between the trimming cam 6 and the linkage piece and between the presser foot lifting cam 5 and the presser foot lifting lever 7, the linkage piece and the presser foot lifting lever 7 are respectively and rotatably connected with a rolling bearing 12, the linkage piece is in rolling connection with the outer wheel surface of the trimming cam 6 through the rolling bearing 12, and the presser foot lifting lever 7 is in rolling connection with the outer wheel surface of the presser foot lifting cam 5 through the rolling bearing 12.
In this embodiment, the specific mounting structure of the second restoring elastic element is as follows: the end part of the trimming drive shaft 3 is fixedly sleeved with a positioning ring sleeve 14, the second reset elastic part is a compression spring 15 sleeved on the trimming drive shaft 3, one end of the compression spring 15 abuts against the positioning ring sleeve 14, and the other end of the compression spring abuts against the machine shell 1.
In addition, in this embodiment, the specific structure adopted by the presser foot lifting mechanism is as follows: the presser foot lifting mechanism comprises a presser foot arm 16, a presser foot 17 is arranged at the front end of the presser foot arm 16, and the rear end of the presser foot arm is connected with a presser foot arm crank shaft 2.
Wherein, the specific mounting structure that elastic component one adopted that resets is: the presser arm crank shaft 2 is rotatably connected to the housing through a shaft sleeve 18, the first reset elastic part is a reset torsion spring 19 sleeved on the shaft sleeve 18, one end of the reset torsion spring 19 abuts against one side wall of the presser foot lifting lever 7, and the other end of the reset torsion spring abuts against the housing 1. Of course, the first restoring elastic element and the second restoring elastic element can also be realized by other common elastic structures.
In order to further improve the transmission stability and accuracy of the whole machine, a fixing sleeve 20 is fixedly sleeved on an output shaft of the driving motor 4, the pressure foot lifting cam 5 and the thread trimming cam 6 are arranged on the fixing sleeve 20, and the pressure foot lifting cam 5, the thread trimming cam 6 and the fixing sleeve 20 are of an integrated structure.
Example two:
the structure of the present embodiment is substantially the same as that of the above embodiment, and the main difference is: the linkage piece is a linkage push block 10; namely, the rolling bearing 12 is rotatably connected to the linkage push block 10, and the linkage push block 10 pushes the trimming drive shaft 3 to axially slide and simultaneously drives the trimming rotating shaft 8 to rotate through the connecting rod assembly. Compared with the first embodiment, the number of parts is reduced, the cost is reduced, and the integrity is stronger.
The utility model also provides a overedger, which comprises the thread trimming and presser foot lifting mechanism of the overedger described in the first embodiment or the second embodiment.
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 by the protection scope of the utility model.
Claims (10)
1. The utility model provides a presser foot mechanism is lifted to hemming machine's trimming, includes casing (1) and establishes presser foot arm crank axle (2) and trimming drive shaft (3) on casing (1), and presser foot arm crank axle (2) circumferential direction drive lifts the presser foot mechanism and does and lift the presser foot action, and trimming drive shaft (3) axial slip drives trimming mechanism and does the trimming action, its characterized in that: the machine shell (1) is provided with a driving motor (4), an output shaft of the driving motor (4) is fixedly sleeved with a presser foot lifting cam (5) and a thread trimming cam (6), a presser arm crank shaft (2) is fixedly connected with one end of a presser foot lifting lever (7), the other end of the presser foot lifting lever (7) abuts against the outer wheel surface of the presser foot lifting cam (5) through the elastic force of a first reset elastic piece, the thread trimming driving shaft (3) is provided with a linkage piece, the linkage piece abuts against the outer wheel surface of the thread trimming cam (6) through the elastic force of a second reset elastic piece, and when the output shaft of the driving motor (4) rotates in the positive direction, the thread trimming mechanism performs thread trimming action and the presser foot lifting mechanism does not act; when the output shaft of the driving motor (4) rotates reversely, the presser foot lifting mechanism performs the action of lifting the presser foot and the thread trimming mechanism does not operate.
2. The thread trimming and presser foot lifting mechanism of the overedger as claimed in claim 1, wherein: the trimming mechanism comprises a trimming rotating shaft (8) which rotates on the shell and a movable knife (9) which is arranged at the front end of the trimming rotating shaft (8), the rear end of the trimming rotating shaft (8) is in transmission connection with a linkage push block (10) through a connecting rod assembly, and the linkage push block (10) is fixedly sleeved on the trimming driving shaft (3).
3. The thread trimming and presser foot lifting mechanism of the overedger as claimed in claim 2, wherein: the linkage piece is a linkage push block (10); or the linkage part is a fixed push block (11) fixedly sleeved on the thread cutting driving shaft (3).
4. The thread trimming and presser foot lifting mechanism of overedger according to claim 1 or 3, characterized in that: the linkage piece and the presser foot lifting lever (7) are both rotatably connected with rolling bearings (12), the linkage piece is connected to the outer wheel surface of the trimming cam (6) in a rolling mode through the rolling bearings (12), and the presser foot lifting lever (7) is connected to the outer wheel surface of the presser foot lifting cam (5) in a rolling mode through the rolling bearings (12).
5. The thread trimming and presser foot lifting mechanism of overedger according to claim 1 or 3, characterized in that: a sliding groove is vertically formed in the upper edge of the machine shell (1), and a sliding guide portion (13) which is connected into the sliding groove in a sliding mode is arranged on the linkage piece.
6. The thread trimming and presser foot lifting mechanism of the overedger according to claim 1 or 2, wherein: the end part of the trimming drive shaft (3) is fixedly sleeved with a positioning ring sleeve (14), the second reset elastic part is a compression spring (15) sleeved on the trimming drive shaft (3), one end of the compression spring (15) abuts against the positioning ring sleeve (14), and the other end of the compression spring abuts against the machine shell (1).
7. The thread trimming and presser foot lifting mechanism of the overedger as claimed in claim 1, wherein: the presser foot lifting mechanism comprises a presser foot arm (16), a presser foot (17) is arranged at the front end of the presser foot arm (16), and the rear end of the presser foot arm is connected with a presser foot arm crank shaft (2).
8. The thread trimming and presser foot lifting mechanism of overedger according to claim 1 or 7, characterized in that: the presser foot arm crank shaft (2) is rotatably connected to the shell through a shaft sleeve (18), the first reset elastic part is a reset torsion spring (19) sleeved on the shaft sleeve (18), one end of the reset torsion spring (19) abuts against one side wall of the presser foot lifting lever (7), and the other end of the reset torsion spring abuts against the shell (1).
9. The thread trimming and presser foot lifting mechanism of the overedger as claimed in claim 1, wherein: the output shaft of the driving motor (4) is fixedly sleeved with a fixing sleeve (20), the presser foot lifting cam (5) and the thread trimming cam (6) are arranged on the fixing sleeve (20), and the presser foot lifting cam (5), the thread trimming cam (6) and the fixing sleeve (20) are of an integrated structure.
10. An overlock machine, characterized in that: a thread trimming and presser foot lifting mechanism comprising an overlock machine as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122891728.6U CN216193264U (en) | 2021-11-22 | 2021-11-22 | Overedger and trimming and presser foot lifting mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122891728.6U CN216193264U (en) | 2021-11-22 | 2021-11-22 | Overedger and trimming and presser foot lifting mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216193264U true CN216193264U (en) | 2022-04-05 |
Family
ID=80913738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122891728.6U Active CN216193264U (en) | 2021-11-22 | 2021-11-22 | Overedger and trimming and presser foot lifting mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216193264U (en) |
-
2021
- 2021-11-22 CN CN202122891728.6U patent/CN216193264U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209456688U (en) | A kind of sewing machine and its automatic shearing and foot lifting mechanism | |
| CN111074441A (en) | Thread trimming or presser foot lifting driving mechanism of sewing machine and thread trimming and presser foot lifting device | |
| CN216193264U (en) | Overedger and trimming and presser foot lifting mechanism thereof | |
| CN210518002U (en) | Electric push rod | |
| CN210262277U (en) | Automatic thread trimming and presser foot lifting device | |
| CN206221500U (en) | Hinge means | |
| CN211339931U (en) | Thread trimming and presser foot lifting mechanism of sewing machine | |
| CN212096427U (en) | Connecting rod head shaking mechanism of service robot | |
| CN109295622A (en) | A kind of the automatic shearing mechanism and sewing machine of sewing machine | |
| CN213960786U (en) | Cutter driving structure with clutch | |
| CN214060867U (en) | Presser foot lifting and trimming device of overedger | |
| CN209243337U (en) | A kind of thread cutting mechanism and sewing machine of sewing machine | |
| CN209636465U (en) | A kind of the automatic shearing mechanism and sewing machine of sewing machine | |
| CN109234930B (en) | Automatic thread trimming mechanism of sewing machine and sewing machine | |
| CN2936561Y (en) | Electric tool | |
| CN213804305U (en) | Trimming and presser foot lifting integrated mechanism of overedger | |
| CN218540041U (en) | Single cam thread trimming and presser foot lifting driving mechanism of overedger | |
| CN215328686U (en) | Presser foot mechanism is lifted to sewing machine's trimming | |
| CN218711333U (en) | Overedger and transmission mechanism for lifting presser foot | |
| CN201865979U (en) | Inlet guide blade pre-screwing mechanism for centrifugal compressor | |
| CN215976369U (en) | Double-cam thread trimming, thread loosening and presser foot lifting mechanism and flat seaming machine | |
| CN217026334U (en) | Sewing machine lifts integrative drive mechanism of presser foot, trimming | |
| CN212270404U (en) | Thread cutting mechanism of sewing machine | |
| CN212045061U (en) | A but, angle of rotation is towards V type hole device for circular knife cutter | |
| CN216338304U (en) | Thread trimming and presser foot lifting mechanism and sewing machine with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |