CN217499649U - Thread cutting mechanism of sewing machine - Google Patents
Thread cutting mechanism of sewing machine Download PDFInfo
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- CN217499649U CN217499649U CN202220724698.1U CN202220724698U CN217499649U CN 217499649 U CN217499649 U CN 217499649U CN 202220724698 U CN202220724698 U CN 202220724698U CN 217499649 U CN217499649 U CN 217499649U
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- trimming
- thread
- connecting rod
- thread trimming
- seat
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Abstract
The utility model discloses a thread trimming mechanism of a sewing machine, which comprises a first thread trimming cutter, a second thread trimming cutter and a thread trimming motor for driving the first thread trimming cutter and the second thread trimming cutter to contact with thread trimming, wherein the first thread trimming cutter is rotatably arranged on a cutter frame sleeve through a first thread trimming seat, and the second thread trimming cutter is rotatably arranged on the cutter frame sleeve through a second thread trimming seat; the thread cutting contact points of the first thread cutting knife and the second thread cutting knife are just positioned below the needle hole of the needle plate. The first thread trimmer and the second thread trimmer move simultaneously to trim threads, so that the base threads at the needle holes can be trimmed directly, and the problem that the subsequent operation is hindered due to overlong lengths of the remaining threads on the cloth is solved. First thread trimmer cutter and second thread trimmer cutter are by the control of trimming motor, and degree of automation is higher, has improved production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the sewing machine, specifically speaking is a thread trimming mechanism of sewing machine.
Background
The patent number is 201510116610.2's a thread trimming mechanism of sewing machine, including fixing the stationary knife on the faller downside and articulating the sword that moves on the faller downside, move the sword including articulated portion and the line portion of grabbing that is used for snatching the facial line, articulated portion is connected with and enables to move the sword and rotate around the pin joint and do the actuating mechanism of cutting motion with the stationary knife, be equipped with an elastic clamping piece between the pinhole of stationary knife and faller, this elastic clamping piece includes clamping part and the connecting portion that links to each other with the faller, the clamping part is long slice form and has the clearance between this clamping part and the faller, when moving the sword and rotating around the pin joint, elastic deformation takes place to the faller direction under the effect of line portion of grabbing, and this clamping part closely supports and leans on together with line portion of grabbing under the effect of self elasticity. The patent disclosure has certain drawbacks, such as excessive length of the remaining thread on the cloth after trimming; the precision requirement is high, and the assembly is complex.
Disclosure of Invention
The utility model provides a to above-mentioned prior art current situation, and provide a thread trimming mechanism of sewing machine, can shorten cloth excess line length, improve the sewing quality at the direct thread trimming of pinhole department of faller.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a thread trimming mechanism of a sewing machine comprises a first thread trimming cutter, a second thread trimming cutter and a thread trimming motor for driving the first thread trimming cutter and the second thread trimming cutter to contact and trim threads, wherein the first thread trimming cutter is rotatably installed on a cutter frame sleeve through a first thread trimming seat, and the second thread trimming cutter is rotatably installed on the cutter frame sleeve through a second thread trimming seat; the thread cutting contact points of the first thread cutting knife and the second thread cutting knife are just positioned below the needle hole of the needle plate.
In order to optimize the technical proposal, the utility model discloses still include following modified technical proposal.
Foretell first trimming seat and second trimming seat include respectively one with knife rest barrel casing normal running fit's ring portion, system in one side of ring portion has the knife rest portion, the opposite side system of ring portion has and is used for driving ring portion pivoted drive division.
The trimming motor is positioned at the front end of the base, and the front end of the base is provided with a second trimming connecting rod and a connecting piece which can rotate through a connecting shaft; the output shaft of the trimming motor is connected with a crank and a first trimming connecting rod which are used for driving the second trimming connecting rod and the connecting piece to rotate.
The connecting piece is triangular, one corner of the connecting piece can be rotatably installed on the connecting shaft, the corner of one side of the connecting piece is rotatably connected with one end of the fourth trimming connecting rod, the other end of the fourth trimming connecting rod is rotatably connected with the driving part of the first trimming seat, and the other side of the connecting piece is fixedly connected with the second trimming connecting rod through a screw.
One end of the second trimming connecting rod is rotatably connected with one end of the third trimming connecting rod, and the other end of the third trimming connecting rod is rotatably connected with the driving part of the second trimming seat.
Compared with the prior art, the first thread trimmer and the second thread trimmer move simultaneously to trim threads, so that the bottom threads at the needle hole can be directly trimmed, and the problem that the excessive length of the remaining threads on the cloth hinders subsequent operation is solved. First thread trimmer cutter and second thread trimmer cutter are by the control of trimming motor, and degree of automation is higher, has improved production efficiency.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the embodiment of the present invention.
Fig. 2 is another schematic view structure diagram of the embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1 to fig. 2 are schematic structural diagrams of the present invention.
Wherein the reference numerals are: the needle plate 1, the thread trimming motor 2, the crank 3, the first thread trimming connecting rod 4, the second thread trimming connecting rod 5, the third thread trimming connecting rod 6, the first thread trimming seat 7, the first thread trimming cutter 8, the connecting piece 9, the fourth thread trimming connecting rod 10, the second thread trimming seat 11, the second thread trimming cutter 12, the connecting shaft 13 and the cutter rest sleeve 14.
As shown in fig. 1 and 2, the thread trimming mechanism of the present invention includes a first thread trimmer 8, a second thread trimmer 12, and a thread trimming motor 2 for driving the first thread trimmer 8 and the second thread trimmer 12 to trim threads. The output shaft of the trimming motor 2 is fixedly sleeved with a crank 3. The driving end of the crank 3 is rotatably connected with the middle part of a second thread trimming connecting rod 5 through a first thread trimming connecting rod 4.
The other end of the second trimming connecting rod 5 is fixedly connected with one end of the connecting piece 9. The connecting piece 9 is triangular, one corner of the connecting piece 9 can be rotatably sleeved on the connecting shaft 13, and the connecting shaft 13 is fixedly connected with the machine base. The angle of one side of the connecting piece 9 is rotatably connected with one end of a fourth thread trimming connecting rod 10, and the other end of the fourth thread trimming connecting rod 10 is rotatably connected with the first thread trimming seat 7. The other side of the connecting piece 9 is fixedly connected with the second trimming connecting rod 5 through a screw, so that the connecting piece 9 and the second trimming connecting rod 5 can integrally rotate around the connecting shaft 13.
The first thread trimming seat 7 comprises a circular ring part, one side of the circular ring part is connected with a cutter holder part used for mounting the first thread trimming cutter 8, and the other side of the circular ring part is connected with a driving part used for driving the first thread trimming seat 7 to rotate. Similarly, the second trimming seat 11 includes a circular ring portion, and a cutter holder portion and a driving portion which are provided on both sides of the circular ring portion. The circular ring part of the first thread trimming seat 7 and the circular ring part of the second thread trimming seat 11 are sleeved on the tool rest cylinder sleeve 14 and can rotate independently.
One end of the second thread trimming connecting rod 5 is rotatably connected with one end of the third thread trimming connecting rod 6, and the other end of the third thread trimming connecting rod 6 is rotatably connected with the driving part of the second thread trimming seat 11. The fourth thread trimming connecting rod 10 is rotatably connected with the driving part of the first thread trimming seat 7.
Under the driving of the fourth thread trimming connecting rod 10 and the second thread trimming connecting rod 5, the first thread trimming seat 7 and the second thread trimming seat 11 respectively rotate around the tool rest sleeve 14, and when the tool rest part of the first thread trimming seat 7 and the tool rest part of the second thread trimming seat 11 move relatively, the first thread trimming knife 8 contacts with the second thread trimming knife 12 to trim the bottom thread. When the knife rest part of the first thread trimming seat 7 and the knife rest part of the second thread trimming seat 11 move in opposite directions, the first thread trimming knife 8 and the second thread trimming knife 12 are separated to a yielding position, so that sewing work is facilitated.
The first thread trimming seat 7 and the second thread trimming seat 11 are located below the needle plate 1, when the first thread trimming knife 8 and the second thread trimming knife 12 contact thread trimming, the thread trimming position is just located below a needle hole of the needle plate 1, and bottom threads at the needle hole can be trimmed to prevent excessive length of remaining threads on cloth from interfering with subsequent operation.
The utility model discloses a working process: the trimming motor 2 rotates clockwise as shown in fig. 2, the crank 3 and the first trimming connecting rod 4 are driven to move, and the first trimming connecting rod 4 pushes the second trimming connecting rod 5 and the connecting piece 9 to rotate clockwise around the connecting shaft 13. At the moment, the third thread trimming connecting rod 6 drives the second thread trimming seat 11 to rotate anticlockwise around the tool rest cylinder sleeve 14, the fourth thread trimming connecting rod 10 drives the first thread trimming seat 7 to move clockwise around the tool rest cylinder sleeve 14, and the first thread trimming cutter 8 on the first thread trimming seat 7 is matched with the second thread trimming cutter 12 on the second thread trimming seat 11 for trimming. When the thread trimming operation is completed, the thread trimming motor 2 rotates counterclockwise to drive the first thread trimming blade 8 and the second thread trimming blade 12 to separate from each other.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.
Claims (5)
1. The utility model provides a trimming mechanism of sewing machine, includes first trimming sword (8) and second trimming sword (12) to and drive first trimming sword (8) and second trimming sword (12) contact trimming motor (2), characterized by: the first thread trimmer (8) is rotatably arranged on the tool rest cylinder sleeve (14) through the first thread trimmer seat (7), and the second thread trimmer (12) is rotatably arranged on the tool rest cylinder sleeve (14) through the second thread trimmer seat (11); the thread cutting contact point of the first thread cutting knife (8) and the second thread cutting knife (12) is just positioned below the needle hole of the needle plate (1).
2. The thread trimming mechanism of claim 1, wherein: the first wire cutting seat (7) and the second wire cutting seat (11) respectively comprise a circular ring part which is in running fit with the knife rest cylinder sleeve (14), a knife rest part is arranged on one side of the circular ring part, and a driving part for driving the circular ring part to rotate is arranged on the other side of the circular ring part.
3. The thread trimming mechanism of claim 2, wherein: the trimming motor (2) is positioned at the front end of the base, and the front end of the base is provided with a second trimming connecting rod (5) and a connecting piece (9) which can rotate through a connecting shaft (13); an output shaft of the trimming motor (2) is connected with a crank (3) and a first trimming connecting rod (4) which are used for driving the second trimming connecting rod (5) and the connecting piece (9) to rotate.
4. A thread trimming mechanism according to claim 3, wherein: the connecting piece (9) be the triangle-shaped, one of them angle of connecting piece (9) can the pivoted install on connecting axle (13), the angle of one side of connecting piece (9) rotates with the one end of fourth trimming connecting rod (10) to be connected, the other end of fourth trimming connecting rod (10) rotates with the drive division of first trimming seat (7) to be connected, the opposite side of connecting piece (9) passes through screw and second trimming connecting rod (5) fixed connection.
5. The thread trimming mechanism as claimed in claim 4, wherein: one end of the second trimming connecting rod (5) is rotatably connected with one end of the third trimming connecting rod (6), and the other end of the third trimming connecting rod (6) is rotatably connected with the driving part of the second trimming seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220724698.1U CN217499649U (en) | 2022-03-31 | 2022-03-31 | Thread cutting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220724698.1U CN217499649U (en) | 2022-03-31 | 2022-03-31 | Thread cutting mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217499649U true CN217499649U (en) | 2022-09-27 |
Family
ID=83347855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220724698.1U Active CN217499649U (en) | 2022-03-31 | 2022-03-31 | Thread cutting mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217499649U (en) |
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2022
- 2022-03-31 CN CN202220724698.1U patent/CN217499649U/en active Active
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