CN211498047U - Differential adjusting device - Google Patents
Differential adjusting device Download PDFInfo
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- CN211498047U CN211498047U CN202020014346.8U CN202020014346U CN211498047U CN 211498047 U CN211498047 U CN 211498047U CN 202020014346 U CN202020014346 U CN 202020014346U CN 211498047 U CN211498047 U CN 211498047U
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- differential
- connecting rod
- crank
- adjusting
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Abstract
The utility model provides a differential adjusting device belongs to sewing machine technical field. The feeding crank component solves the technical problems that the feeding crank component of the existing differential adjusting device is poor in structural strength, easy to break and the like. The differential adjusting device comprises a differential connecting rod and an adjusting connecting rod, wherein one end of the differential connecting rod is connected with the right end face of the differential tooth rack, the other end of the differential connecting rod, the upper end of the adjusting connecting rod and the upper end of a differential connecting sheet of a connecting rod adjusting mechanism are rotatably connected through a connecting pin, a through hole which penetrates through the feeding crank up and down is formed in the feeding crank, and the lower end of the adjusting connecting rod penetrates through the through hole and extends out of the lower end of the through hole. The utility model discloses simplified the articulate structure of pay-off, replaced original pay-off crank and crank assembly's structure through pay-off crank and adjusting the connecting rod complex structure, the structure is simpler, because present pay-off crank only need set up the through-hole supply adjusting the connecting rod pass can, structural strength is higher, is difficult to cracked.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, refer in particular to a differential adjusting device.
Background
In the existing overlock differential adjusting mechanism, the back-and-forth movement of a driven tooth is as follows: the main shaft rotates to drive the feeding connecting rod to do eccentric motion, the feeding connecting rod drives the feeding crank to swing, the feeding crank is connected with the crank component in a sliding mode, the feeding crank component is also connected with the sliding block, and the sliding block slides in the differential tooth rack, so that the swinging of the feeding crank drives the differential tooth rack to move back and forth; the motion of the driving tooth is: the feeding crank is fixedly connected with the cloth feeding shaft, so that the feeding crank can drive the cloth feeding shaft to swing, the cloth feeding shaft can drive the driving tooth feeding crank to swing, the driving tooth feeding crank swings to drive the connecting rod to move back and forth, and the connecting rod drives the main feeding tooth frame to move back and forth; differential regulation: the differential distance is adjusted by pressing the differential rod downwards or upwards, the differential rod drives the differential shaft to rotate, the differential shaft drives the differential crank to swing, the differential crank drives the differential connecting piece to move up and down, and the differential connecting piece drives the crank assembly to move up and down in the sliding groove, so that the position of the crank assembly relative to the feeding crank is changed, the adjustment of the swing size is realized, and the adjustment of the differential distance is realized; the feeding crank part of the existing mechanism has poor structural strength and occasionally has a fracture phenomenon.
Disclosure of Invention
The utility model aims at providing a differential adjusting device that structural strength is higher.
The purpose of the utility model is realized like this:
the utility model provides a differential adjusting device, includes main shaft and connecting rod adjustment mechanism, the main shaft can drive eccentric cover and locate the epaxial differential tooth frame up-and-down motion of main, the main shaft can drive pay-off crank swing back and forth through the pay-off connecting rod of eccentric settings, its characterized in that: the device comprises a differential connecting rod and an adjusting connecting rod, wherein one end of the differential connecting rod is connected with the right end face of a differential tooth rack, the other end of the differential connecting rod, the upper end of the adjusting connecting rod and the upper end of a differential connecting piece of a connecting rod adjusting mechanism are rotatably connected through a connecting pin, a through hole which penetrates through a feeding crank is formed in the feeding crank, and the lower end of the adjusting connecting rod penetrates through the through hole and extends out of the lower end of the through hole.
In the differential adjusting device, one end of the differential connecting rod is rotatably fixed to the differential tooth rack through a differential screw, and an axial direction of the differential screw, an axial direction of the connecting pin and an axial direction of the main shaft are parallel.
In the differential adjusting device, a main feeding tooth rack eccentrically sleeved on the main shaft is arranged on the left side of the differential tooth rack, the left end face of the main feeding tooth rack is connected with one end of a main feeding connecting rod, the other end of the main feeding connecting rod is connected with a main feeding crank, the feeding crank and the main feeding crank are both sleeved on a feeding shaft, and the feeding shaft is parallel to the main shaft.
In the differential adjusting device, the main shaft is eccentrically sleeved with a sliding block, and the differential tooth rack and the main tooth conveying tooth rack are sleeved outside the sliding block and can slide relative to the sliding block.
In the differential adjustment device, the link adjustment mechanism includes a differential rod, a differential shaft, a differential crank, and a differential link, a rear end of the differential rod is slidably fixed to the differential plate by a differential adjustment nut, a front end of the differential rod is fixedly connected to a rear end of the differential crank by the differential shaft, a front end of the differential drive is fixedly connected to a lower end of the differential link, and the differential rod moves down to drive the differential link to move up.
When the utility model works, the main shaft drives the slide block arranged in the differential tooth press and the main tooth feeding rack to do eccentric motion when the differential tooth rack and the main tooth feeding rack move up and down, and the slide block slides in the differential tooth rack and the main tooth feeding rack to drive the slide block to move up and down so as to form the up-and-down motion of the differential tooth; the front and back movement of the differential tooth rack drives the feeding connecting rod to swing back and forth through the main shaft, the front and back swing of the feeding connecting rod drives the feeding crank to swing back and forth, and the differential adjusting nut in the connecting rod adjusting mechanism is in a locking state, so the differential rod, the differential shaft and the differential crank are fixed, the connecting pin can only swing along with the differential connecting sheet and can not randomly move up and down, the adjusting connecting rod drives the differential connecting rod to swing back and forth, and the differential connecting rod drives the differential tooth rack to move back and forth; the back and forth movement of the main feeding tooth rack is driven by a main feeding connecting rod, the back and forth swing of the feeding crank drives a main feeding crank fixed at the other end of the cloth feeding shaft to synchronously swing back and forth, the back and forth swing of the main feeding crank drives the back and forth swing of the main feeding connecting rod, and the back and forth swing of the main feeding connecting rod drives the back and forth movement of the main feeding tooth rack; when the differential distance needs to be increased, the differential rod is pressed downwards, the differential rod drives the differential shaft to rotate clockwise, the differential shaft drives the differential crank to swing upwards, the differential crank swings upwards to drive the differential connecting sheet to move upwards, the differential connecting sheet drives the connecting pin to move upwards, the upward movement of the connecting pin drives the adjusting connecting rod to slide upwards in the through hole of the feeding crank, namely, the length of the adjusting connecting rod relative to the feeding crank is increased, the length of the adjusting connecting rod is increased, the swinging range of the adjusting connecting rod is enlarged, and therefore the forward and backward movement range of the adjusting connecting rod driving the differential tooth rack is enlarged, the differential distance is increased, and the reverse operation of reducing the differential distance is realized.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
the utility model discloses a simplified the articulate structure of pay-off, replaced original pay-off crank and crank assembly's structure through pay-off crank and adjusting the connecting rod complex structure, the structure is simpler, because present pay-off crank only need set up the through-hole supply adjusting the connecting rod pass can, structural strength is higher, is difficult to cracked.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the driving structure of the main tooth feeding rack of the present invention.
Fig. 3 is an exploded view of the adjusting link according to the present invention.
In the figure, 1, main shaft; 2. a differential tooth rack; 3. a main tooth feeding rack; 4. a feeding connecting rod; 5. a feeding crank; 6. a differential link; 7. adjusting the connecting rod; 8. differential connecting sheets; 9. a connecting pin; 10. a through hole; 11. a differential screw; 12. a main feeding connecting rod; 13. a main feed crank; 14. a cloth feeding shaft; 15. a slider; 16. a differential bar; 17. a differential shaft; 18. a differential crank; 19. a differential adjustment nut; 20. and (4) moving the plate in a differential mode.
Detailed Description
The invention will be further described with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3:
the differential adjusting device comprises a main shaft 1, a connecting rod adjusting mechanism, a differential connecting rod 6 and an adjusting connecting rod 7, wherein the main shaft 1 can drive a differential tooth rack 2 eccentrically sleeved on the main shaft 1 to move up and down, the main shaft 1 can drive a feeding crank 5 to swing back and forth through an eccentrically arranged feeding connecting rod 4, one end of the differential connecting rod 6 is connected with the right end face of the differential tooth rack 2, the other end of the differential connecting rod 6, the upper end of the adjusting connecting rod 7 and the upper end of a differential connecting sheet 8 of the connecting rod adjusting mechanism are rotatably connected through a connecting pin 9, the feeding crank 5 is provided with a through hole 10 which penetrates through the feeding crank 5 up and down, and the lower end of the adjusting connecting rod 7 penetrates through the through hole 10 and; one end of the differential connecting rod 6 is rotatably fixed with the differential tooth rack 2 through a differential screw 11, and the axial direction of the differential screw 11, the axial direction of the connecting pin 9 and the axial direction of the main shaft 1 are parallel. This differential adjusting device has simplified the structure of pay-off crank 5, has replaced the structure of original pay-off crank 5 and crank subassembly through pay-off crank 5 and adjusting connecting rod 7 complex structure, and the structure is simpler, because pay-off crank 5 now only need set up through-hole 10 supply adjusting connecting rod 7 pass can, structural strength is higher, is difficult to cracked.
As shown in fig. 2, a main feeding tooth rack 3 eccentrically sleeved on a main shaft 1 is arranged on the left side of a differential tooth rack 2, the left end surface of the main feeding tooth rack 3 is connected with one end of a main feeding connecting rod 12, the other end of the main feeding connecting rod 12 is connected with a main feeding crank 13, a feeding crank 5 and the main feeding crank 13 are both sleeved on a feeding cloth shaft 14, and the feeding cloth shaft 14 is arranged in parallel with the main shaft 1; the main shaft 1 is eccentrically sleeved with a sliding block 15, and the differential tooth rack 2 and the main tooth rack 3 are both sleeved outside the sliding block 15 and can slide relative to the sliding block 15.
As shown in fig. 3, the connecting rod adjusting mechanism includes a differential rod 16, a differential shaft 17, a differential crank 18 and a differential link 8, a rear end of the differential rod 16 is slidably fixed to a differential plate 20 through a differential adjusting nut 19, a front end of the differential rod 16 and a rear end of the differential crank 18 are fixedly connected through the differential shaft 17, a front end of a differential drive is fixedly connected to a lower end of the differential link 8, and the differential rod 16 moves down to drive the differential link 8 to move up.
When the utility model works, the main shaft 1 drives the slide block 15 arranged in the differential tooth press and the main tooth feeding rack 3 to do eccentric motion when the differential tooth rack 2 and the main tooth feeding rack 3 move up and down, and the slide block 15 slides in the differential tooth rack 2 and the main tooth feeding rack 3 to drive the differential tooth to move up and down, so that the differential tooth moves up and down; the front and back movement of the differential tooth rack 2 drives the feeding connecting rod 4 to swing back and forth by the main shaft 1, the front and back swing of the feeding connecting rod 4 drives the feeding crank 5 to swing back and forth, and because the differential adjusting nut 19 in the connecting rod adjusting mechanism is in a locking state, the differential rod 16, the differential shaft 17 and the differential crank 18 are fixed, so the connecting pin 9 can only swing along with the differential connecting sheet and can not move up and down randomly, the adjusting connecting rod 7 drives the differential connecting rod 6 to swing back and forth, and the differential connecting rod 6 drives the differential tooth rack 2 to move back and forth; the back and forth movement of the main tooth feeding rack 3 is driven by a main feeding connecting rod 12, the back and forth swing of the feeding crank 5 drives a main feeding crank 13 fixed at the other end of the cloth feeding shaft 14 to synchronously swing back and forth, the back and forth swing of the main feeding crank 13 drives the back and forth swing of the main feeding connecting rod 12, and the back and forth swing of the main feeding connecting rod 12 drives the back and forth movement of the main tooth feeding rack 3; when the differential distance needs to be increased, the differential rod 16 is pressed downwards, the differential rod 16 drives the differential shaft 17 to rotate clockwise, the differential shaft 17 drives the differential crank 18 to swing upwards, the differential crank 18 swings upwards to drive the differential connecting sheet 8 to move upwards, the differential connecting sheet 8 drives the connecting pin 9 to move upwards, the upward movement of the connecting pin 9 drives the adjusting connecting rod 7 to slide upwards in the through hole 10 of the feeding crank 5, namely, the length of the adjusting connecting rod 7 relative to the feeding crank 5 is increased, the length of the adjusting connecting rod 7 is increased, the swinging range of the adjusting connecting rod 7 is enlarged, the forward and backward movement range of the adjusting connecting rod 7 driving the differential rack 2 is enlarged, the differential distance is increased, and the reverse operation of reducing the differential distance is realized.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (5)
1. The utility model provides a differential adjusting device, includes main shaft (1) and connecting rod adjustment mechanism, main shaft (1) can drive eccentric cover differential tooth frame (2) up-and-down motion on main shaft (1), main shaft (1) can drive pay-off crank (5) fore-and-aft swing through eccentric settings's pay-off connecting rod (4), its characterized in that: the device comprises a differential connecting rod (6) and an adjusting connecting rod (7), wherein one end of the differential connecting rod (6) is connected with the right end face of a differential tooth rack (2), the other end of the differential connecting rod (6), the upper end of the adjusting connecting rod (7) and the upper end of a differential connecting sheet (8) of a connecting rod adjusting mechanism are rotatably connected through a connecting pin (9), a through hole (10) which penetrates through a feeding crank (5) from top to bottom is formed in the feeding crank (5), and the lower end of the adjusting connecting rod (7) penetrates through the through hole (10) and extends out of the lower end of the through hole (10).
2. A differential adjustment device according to claim 1, characterized in that: one end of the differential connecting rod (6) is rotatably fixed with the differential tooth rack (2) through a differential screw (11), and the axial direction of the differential screw (11), the axial direction of the connecting pin (9) and the axial direction of the main shaft (1) are parallel.
3. A differential adjustment device according to claim 1, characterized in that: the left side of differential tooth frame (2) is equipped with main tooth frame (3) of sending that eccentric cover was located on main shaft (1), the left end face that main tooth frame (3) was sent is connected with the one end that main connecting rod (12) was sent, the other end that main connecting rod (12) was sent is sent crank (13) with the main and is connected, pay-off crank (5) and main crank (13) of sending all overlap on work feed shaft (14), work feed shaft (14) and main shaft (1) parallel arrangement.
4. A differential adjustment device according to claim 3, characterized in that: the eccentric sleeve is equipped with slider (15) on main shaft (1), differential tooth frame (2) and main tooth frame (3) are all located the slider (15) outside and can with slider (15) relative slip.
5. A differential adjustment device according to any of claims 1-4, characterized in that: the connecting rod adjusting mechanism comprises a differential rod (16), a differential shaft (17), a differential crank (18) and a differential connecting sheet (8), the rear end part of the differential rod (16) is slidably fixed with a differential plate (20) through a differential adjusting nut (19), the front end of the differential rod (16) is fixedly connected with the rear end of the differential crank (18) through the differential shaft (17), the front end of the differential drive is fixedly connected with the lower end of the differential connecting sheet (8), and the differential rod (16) moves downwards to drive the differential connecting sheet (8) to move upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020014346.8U CN211498047U (en) | 2020-01-04 | 2020-01-04 | Differential adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020014346.8U CN211498047U (en) | 2020-01-04 | 2020-01-04 | Differential adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211498047U true CN211498047U (en) | 2020-09-15 |
Family
ID=72398609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020014346.8U Active CN211498047U (en) | 2020-01-04 | 2020-01-04 | Differential adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211498047U (en) |
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2020
- 2020-01-04 CN CN202020014346.8U patent/CN211498047U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: JACK SEWING MACHINE Co.,Ltd. |