CN214496735U - Double-moving-knife thread cutting mechanism of sewing machine - Google Patents
Double-moving-knife thread cutting mechanism of sewing machine Download PDFInfo
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- CN214496735U CN214496735U CN202022846997.6U CN202022846997U CN214496735U CN 214496735 U CN214496735 U CN 214496735U CN 202022846997 U CN202022846997 U CN 202022846997U CN 214496735 U CN214496735 U CN 214496735U
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- knife
- rod
- push rod
- sewing machine
- sword
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- 238000009958 sewing Methods 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 title abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 238000009966 trimming Methods 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a double-acting knife thread trimming mechanism of a sewing machine, which comprises a needle plate, wherein the upper surface of the needle plate is provided with a cylinder, the lower end of the cylinder is provided with a connecting rod, one end of the connecting rod, which is far away from the cylinder, is provided with a pressing plate, one side of the pressing plate, which is far away from the connecting rod, is provided with a push rod, one end of the push rod, which is far away from the pressing plate, is provided with a fixed rod, a first rotating shaft is arranged between the ends of the fixed rod, which are close to the push rod, a fixed sleeve is arranged at the two ends of the first rotating shaft, a gasket is arranged between the push rod and the fixed rod, the lower end of the fixed rod is provided with an auxiliary knife, and one side of the auxiliary knife is provided with an active knife; the double-knife thread cutting mechanism of the sewing machine can achieve the purpose of quickly cutting a sewing thread by arranging the driving knife, and has simple structure and stable driving process; through setting up the ball, can reach and make main sword and vice sword rotate more smoothly around the second pivot, more stable, both strengthened the precision of grafting trimming, reduced the dead condition of rotation card again.
Description
Technical Field
The utility model relates to a sewing machine part technical field specifically is sewing machine's double acting sword thread trimmer mechanism.
Background
The sewing machine is a machine which utilizes one or more sewing threads to sew and connect on a sewing material to form one or more stitches, so that multiple layers of sewing materials are interwoven or sewn, the sewing machine is often used for fabric garment sewing production and is the most important step in garment production, the stitches sewn by the sewing machine are neat, beautiful, flat and firm, the automation of the sewing machine is higher and higher along with the development of science and technology, the sewing speed is high, the use is simple and convenient, and the sewing machine is widely applied to the garment production field; the sewing machine needs to cut the sewing thread after the sewing of the clothes is finished, and the double-moving-blade thread cutting means that two groups of moving blade assemblies move mutually to cut the sewing thread so as to ensure the smooth cutting of the sewing thread.
The prior art has the following defects or problems:
1. in the existing double-knife thread cutting mechanism of the sewing machine, two moving knife components are mostly driven by a driving mechanism to move, the cutting edges are intersected to cut the sewing thread, but if the sewing machine is used for a long time, the internal driving parts are easy to be blocked or even dead;
2. the double-moving-knife thread cutting mechanism of the existing sewing machine is not stable enough in structure, and when two moving knife assemblies are connected, the situation of dislocation is easy to occur, so that thread breakage failure is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a double acting sword thread trimming mechanism of sewing machine to the weak point of prior art to solve the problem that provides in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a double-acting-knife thread trimming mechanism of a sewing machine comprises a needle plate, wherein an air cylinder is arranged on the upper surface of the needle plate, a connecting rod is arranged at the lower end of the air cylinder, a pressing plate is arranged at one end, away from the air cylinder, of the connecting rod, a push rod is arranged at one side, away from the connecting rod, of the pressing plate, a fixed rod is arranged at one end, away from the pressing plate, of the push rod, a first rotating shaft is arranged between the ends, close to the push rod, of the fixed rod in a penetrating mode, fixed sleeves are arranged at two ends of the first rotating shaft, a gasket is arranged between the push rod and the fixed rod, an auxiliary moving knife is arranged at the lower end of the fixed rod, an auxiliary moving knife is arranged at one side of the auxiliary moving knife, a lower thread opening is arranged between the auxiliary moving knife and the main moving knife, a driving knife blade is arranged at one side, close to the lower thread opening, a slot is arranged inside one side, close to the lower thread opening, auxiliary moving blades are arranged at two sides of the slot, cushion blocks are arranged at the bottoms of the driving knife and the auxiliary moving blades, the driving knife and the auxiliary moving knife are provided with fixing blocks on the upper surfaces, a second rotating shaft is arranged between the cushion block and the fixing block, grooves are formed in one sides, close to the driving knife, of the cushion block and the fixing block, balls are arranged inside the grooves, and arc-shaped grooves are formed in two sides, close to the cushion block and the fixing block, of the driving knife.
As the utility model discloses an optimal technical scheme, the clamp plate passes through coupling rod and cylinder piston end fixed connection, the clamp plate bottom is connected fixedly with the push rod, one side that the clamp plate is close to the faller slides from top to bottom on the faller surface.
As the utility model discloses an optimal technical scheme, first pivot runs through push rod and dead lever, first pivot both ends all with fixed cover fixed connection, the push rod rotates through first pivot with the dead lever to be connected.
As the utility model discloses an preferred technical scheme, the second pivot runs through vice sword and the initiative sword of moving respectively, the second pivot is fixed in vice sword and the initiative sword center of moving through the cushion, vice sword and the initiative sword receives the dead lever promotion incorgruous rotation around the second pivot.
As the utility model discloses a preferred technical scheme, initiative sword blade is the V-arrangement, the initiative sword blade passes through the slot and pegs graft with vice sword that moves, vice sword blade that moves contacts with initiative sword blade both sides.
As the utility model discloses a preferred technical scheme, recess height dimension slightly is greater than the radius of ball, the ball centre of sphere is in inside the recess, the ball rolls in the recess.
As the utility model discloses a preferred technical scheme, the arc wall is ring shape, arc wall internal diameter size and ball external diameter size looks adaptation, the ball rolls in the arc wall is inside, the ball passes through the arc wall and moves sword, vice sword roll connection with driving.
Compared with the prior art, the utility model provides a double acting sword thread trimmer devices of sewing machine possesses following beneficial effect:
1. according to the double-knife thread cutting mechanism of the sewing machine, the driving knife is arranged, the air cylinder is used for driving the connecting rod to move up and down, the connecting rod drives the pressing plate to press down, the pressing plate presses down to push the push rod, the push rod rotates relative to the first rotating shaft, the push rod rotates to push the fixing rod to incline, the fixing rod drives the auxiliary knife and the driving knife to rotate in different directions around the second rotating shaft, the driving knife and the auxiliary knife are connected in a crossed mode, and therefore the driving knife blade is inserted into the slot to cut a sewing thread, the thread cutting mechanism is simple in structure and stable in driving process, and the sewing thread can be effectively and quickly cut through the insertion of the driving knife and the auxiliary knife;
2. this double acting sword thread trimmer mechanism of sewing machine through setting up the ball, through setting up the ball inside the recess, the ball stretches out the recess and rolls in the arc wall, and the ball distributes and moves the sword both sides at driving sword and vice sword to make driving sword and vice sword rotate more smoothly around the second pivot, more stable, both strengthened the precision of grafting thread trimmer, reduced the dead condition of rotation card again.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the active cutter of the present invention;
FIG. 3 is a schematic view of the connection of the auxiliary knife of the structure of the present invention;
FIG. 4 is a schematic view of the first pivot connection of the present invention;
fig. 5 is a schematic view of the second pivot connection of the present invention.
In the figure: 1. a needle plate; 2. a cylinder; 3. a coupling rod; 4. pressing a plate; 5. a push rod; 6. fixing the rod; 7. a first rotating shaft; 8. fixing a sleeve; 9. a gasket; 10. an auxiliary moving blade; 11. driving the knife; 12. a wire outlet; 13. a driving blade; 14. a slot; 15. an auxiliary moving blade; 16. cushion blocks; 17. a fixed block; 18. a second rotating shaft; 19. a groove; 20. a ball bearing; 21. an arc-shaped groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, in this embodiment: a double-moving-blade thread trimming mechanism of a sewing machine comprises a needle plate 1, wherein the upper surface of the needle plate 1 is provided with a cylinder 2, the lower end of the cylinder 2 is provided with a connecting rod 3, one end of the connecting rod 3, which is far away from the cylinder 2, is provided with a pressing plate 4, one side of the pressing plate 4, which is far away from the connecting rod 3, is provided with a push rod 5, one end of the push rod 5, which is far away from the pressing plate 4, is provided with a fixed rod 6, a first rotating shaft 7 is arranged between the ends of the fixed rod 6, which are close to the push rod 5, two ends of the first rotating shaft 7 are provided with fixed sleeves 8, a gasket 9 is arranged between the push rod 5 and the fixed rod 6, the lower end of the fixed rod 6 is provided with an auxiliary moving blade 10, one side of the auxiliary moving blade 10 is provided with a driving blade 11, a thread outlet 12 is arranged between the auxiliary moving blade 10 and the driving blade 11, one side of the auxiliary blade 10, which is close to the thread outlet 12, is internally provided with a slot 14, two sides of the slot 14 are provided with auxiliary blade 15, the bottom of the driving knife 11 and the bottom of the auxiliary knife 10 are both provided with a cushion block 16, the upper surfaces of the driving knife 11 and the auxiliary knife 10 are both provided with a fixed block 17, a second rotating shaft 18 is arranged between the cushion block 16 and the fixed block 17, one sides of the cushion block 16 and the fixed block 17, which are close to the driving knife 11, are provided with grooves 19, balls 20 are arranged inside the grooves 19, and both sides of the driving knife 11, which are close to the cushion block 16 and the fixed block 17, are both provided with arc-shaped grooves 21.
In the embodiment, a pressing plate 4 is fixedly connected with a piston end of an air cylinder 2 through a connecting rod 3, the air cylinder 2 is used for driving the pressing plate 4 to press downwards, the bottom end of the pressing plate 4 is fixedly connected with a push rod 5, the push rod 5 is pushed to rotate by pressing the pressing plate 4 downwards, one side, close to a needle plate 1, of the pressing plate 4 slides up and down on the surface of the needle plate 1, and the pressing plate 4 stably presses downwards; the first rotating shaft 7 penetrates through the push rod 5 and the fixed rod 6, so that the push rod 5 and the fixed rod 6 can be conveniently hinged to rotate, two ends of the first rotating shaft 7 are fixedly connected with the fixing sleeve 8 and used for fixing the first rotating shaft 7 and preventing the first rotating shaft 7 from falling off from the push rod 5 and the fixed rod 6, and the push rod 5 and the fixed rod 6 are rotatably connected through the first rotating shaft 7; the second rotating shaft 18 penetrates through the auxiliary moving knife 10 and the driving knife 11 respectively, so that the auxiliary moving knife 10 and the driving knife 11 can be conveniently intersected in a rotating mode, the second rotating shaft 18 is fixed in the centers of the auxiliary moving knife 10 and the driving knife 11 through the cushion block 16 and used for fixing the position of the second rotating shaft 18, the auxiliary moving knife 10 and the driving knife 11 are pushed by the fixing rod 6 to rotate around the second rotating shaft 18 in different directions, and the thread cutting operation is achieved; the driving knife blade 13 is V-shaped, the driving knife blade 13 is inserted into the auxiliary knife 10 through the slot 14 to cut the sewing thread, and the auxiliary knife blade 15 is contacted with the two sides of the driving knife blade 13; the height of the groove 19 is slightly larger than the radius of the ball 20, the ball 20 is placed in the groove 19, the center of the ball 20 is positioned in the groove 19, the ball 20 is prevented from falling from the inside of the groove 19, and the ball 20 rolls in the groove 19; the arc-shaped groove 21 is circular, so that the balls 20 can roll in the arc-shaped groove 21 conveniently, the inner diameter size of the arc-shaped groove 21 is matched with the outer diameter size of the balls 20, the balls 20 roll in the arc-shaped groove 21, the balls 20 are in rolling connection with the driving knife 11 and the auxiliary knife 10 through the arc-shaped groove 21, and the stability and the fluency of the rotation of the auxiliary knife 10 and the driving knife 11 are enhanced.
The utility model discloses a theory of operation and use flow: the user firstly opens the cylinder 2, the cylinder 2 drives the connecting rod 3 to move up and down, the connecting rod 3 drives the pressing plate 4 to press down, the pressing plate 4 presses down to push the push rod 5, the push rod 5 rotates relative to the first rotating shaft 7, the push rod 5 rotates to push the fixing rod 6 to incline, the fixing rod 6 drives the auxiliary knife 10 and the main knife 11 to rotate around the second rotating shaft 18 in different directions, the balls 20 are distributed on two sides of the main knife 11 and the auxiliary knife 10 to roll in the arc-shaped grooves 21, so that the main knife 11 and the auxiliary knife 10 rotate around the second rotating shaft 18 more smoothly and stably, the rotation blocking condition is reduced, the main knife 11 and the auxiliary knife 10 are connected in a crossing manner, the main knife blade 13 is inserted into the slot 14, and the sewing thread is effectively and rapidly cut.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. Double-acting sword thread trimming mechanism of sewing machine, its characterized in that: comprises a needle plate (1), wherein an air cylinder (2) is arranged on the upper surface of the needle plate (1), a connecting rod (3) is arranged at the lower end of the air cylinder (2), a pressing plate (4) is arranged at one end, far away from the air cylinder (2), of the connecting rod (3), a push rod (5) is arranged at one side, far away from the connecting rod (3), of the push rod (5), a fixed rod (6) is arranged at one end, far away from the pressing plate (4), of the push rod (5), a first rotating shaft (7) penetrates through the space between one ends, close to the push rod (5), of the fixed rod (6), a fixed sleeve (8) is arranged at two ends of the first rotating shaft (7), a gasket (9) is arranged between the push rod (5) and the fixed rod (6), an auxiliary knife (10) is arranged at the lower end of the fixed rod (6), a main knife (11) is arranged at one side of the auxiliary knife (10), a lower line opening (12) is arranged between the auxiliary knife (10) and the main knife (11), one side that initiative sword (11) are close to lower line mouth (12) is provided with initiative blade (13), one side inside slot (14) that vice sword (10) are close to lower line mouth (12), slot (14) both sides are provided with vice sword blade (15), initiative sword (11) all are provided with cushion (16) with vice sword (10) bottom, initiative sword (11) all are provided with fixed block (17) with vice sword (10) upper surface, be provided with second pivot (18) between cushion (16) and fixed block (17), one side that cushion (16) and fixed block (17) are close to initiative sword (11) is provided with recess (19), inside ball (20) that is provided with of recess (19), both sides that initiative sword (11) are close to cushion (16) and fixed block (17) all are provided with arc wall (21).
2. The double-action-knife thread trimming mechanism of a sewing machine according to claim 1, characterized in that: the pressing plate (4) is fixedly connected with the piston end of the cylinder (2) through the connecting rod (3), the bottom end of the pressing plate (4) is fixedly connected with the push rod (5), and one side, close to the needle plate (1), of the pressing plate (4) slides up and down on the surface of the needle plate (1).
3. The double-action-knife thread trimming mechanism of a sewing machine according to claim 1, characterized in that: first pivot (7) run through push rod (5) and dead lever (6), first pivot (7) both ends all with fixed cover (8) fixed connection, push rod (5) are connected through first pivot (7) rotation with dead lever (6).
4. The double-action-knife thread trimming mechanism of a sewing machine according to claim 1, characterized in that: the second rotating shaft (18) penetrates through the auxiliary moving knife (10) and the driving knife (11) respectively, the second rotating shaft (18) is fixed at the centers of the auxiliary moving knife (10) and the driving knife (11) through the cushion block (16), and the auxiliary moving knife (10) and the driving knife (11) are pushed by the fixing rod (6) to rotate around the second rotating shaft (18) in different directions.
5. The double-action-knife thread trimming mechanism of a sewing machine according to claim 1, characterized in that: the driving blade (13) is V-shaped, the driving blade (13) is connected with the auxiliary moving blade (10) in an inserting mode through a slot (14), and the auxiliary moving blade (15) is in contact with the two sides of the driving blade (13).
6. The double-action-knife thread trimming mechanism of a sewing machine according to claim 1, characterized in that: the height dimension of the groove (19) is slightly larger than the radius of the ball (20), the center of the ball (20) is positioned inside the groove (19), and the ball (20) rolls in the groove (19).
7. The double-action-knife thread trimming mechanism of a sewing machine according to claim 1, characterized in that: the arc-shaped groove (21) is in a circular ring shape, the inner diameter of the arc-shaped groove (21) is matched with the outer diameter of the ball (20), the ball (20) rolls in the arc-shaped groove (21), and the ball (20) is connected with the driving knife (11) and the auxiliary knife (10) in a rolling mode through the arc-shaped groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022846997.6U CN214496735U (en) | 2020-12-02 | 2020-12-02 | Double-moving-knife thread cutting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022846997.6U CN214496735U (en) | 2020-12-02 | 2020-12-02 | Double-moving-knife thread cutting mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214496735U true CN214496735U (en) | 2021-10-26 |
Family
ID=78206772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022846997.6U Expired - Fee Related CN214496735U (en) | 2020-12-02 | 2020-12-02 | Double-moving-knife thread cutting mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214496735U (en) |
-
2020
- 2020-12-02 CN CN202022846997.6U patent/CN214496735U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211026 |