CN115182104B

CN115182104B - Feeding thread hooking mechanism capable of being flexibly adjusted and sewing machine

Info

Publication number: CN115182104B
Application number: CN202110362567.3A
Authority: CN
Inventors: 郑吉�; 柯祥林; 祝书伟
Original assignee: Jack Technology Co Ltd
Current assignee: Jack Technology Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2024-12-17
Anticipated expiration: 2041-04-02
Also published as: WO2022206003A1; CN115182104A

Abstract

The present invention provides a flexibly adjustable feeding thread hooking mechanism and a sewing machine. The flexibly adjustable feeding thread hooking mechanism includes a tooth frame, a feed tooth and a feeding thread hooking module. The feeding thread hooking module includes a feeding thread hooking driving source, a rotatable rotary hook, a tooth lifting connection portion arranged at one end of the tooth frame, and a tooth lifting thread hooking transmission mechanism. The feeding thread hooking driving source is connected to the rotary hook and the tooth lifting connection portion of the tooth frame through the tooth lifting thread hooking transmission mechanism. The feeding thread hooking driving source is independent of the driving source used to drive the machine needle in the sewing machine. The present application combines the tooth lifting function and the thread hooking function of the sewing machine into an independent functional module, and uses an independent feeding thread hooking driving source to drive the thread hooking and lifting teeth, so that the relative timing of the feeding thread hooking driving source and the driving source used to drive the machine needle in the sewing machine can be adjusted, so that the coordination timing of the rotary hook and the machine needle, and the coordination timing of the up and down reciprocating motion of the feed tooth and the machine needle can be adjusted, which greatly improves the sewing adaptability of the sewing machine.

Description

Feeding thread hooking mechanism capable of being flexibly adjusted and sewing machine

Technical Field

The invention relates to a feeding and hooking mechanism capable of being flexibly adjusted.

The invention also relates to a sewing machine comprising the flexible adjustable feeding thread hooking mechanism.

Background

At present, the structure of the sewing machine in the prior art is as shown in fig. 1, and mainly comprises a main motor 100, a main shaft 200 driven by the main motor 100 to rotate, a thorn thread take-up mechanism 300, a feeding mechanism 400 and a thread hooking mechanism 500, wherein the power of the thorn thread take-up mechanism 300, the feeding mechanism 400 and the thread hooking mechanism 500 is derived from the main shaft 200. When the sewing machine is operated, the main motor 100 drives the main shaft 200 to perform circumferential rotary motion, and the main shaft 200 transmits power to the needle 301 in the needling thread take-up mechanism 300, the feed dog 401 in the feeding mechanism 400 and the rotating shuttle 501 in the thread hooking mechanism 500 through the transmission mechanisms respectively, so that the needle 301 performs up-and-down reciprocating motion, performs needling motion, performs composite motion of up-and-down reciprocating motion and forward-and-backward reciprocating motion, performs feeding motion, and performs circumferential rotary motion and thread hooking motion of the rotating shuttle 501. Therefore, the existing sewing machine uses the main motor 100 as a main power source, and transmits power to the end execution parts of the needle 301, the feed dog 401 and the rotating shuttle 501 respectively through a relatively complex transmission structure, but the sewing machine with the structural form has the following defects that 1, the matching time sequence of the needle and the rotating shuttle is not adjustable, 2, the movement track form of the feed dog is not adjustable, and 3, the part machining precision requirement is high. Therefore, the existing sewing machine is difficult to adapt to more and more complex sewing working conditions.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a feeding thread hooking mechanism capable of being flexibly adjusted, so as to improve sewing adaptability.

In order to achieve the above purpose, the invention provides a feeding thread hooking mechanism capable of being flexibly adjusted, which comprises a tooth frame, a feeding thread feeding tooth arranged on the tooth frame and a feeding thread hooking module, wherein the feeding thread hooking module comprises a feeding thread hooking driving source, a rotatable rotating shuttle, a thread lifting connecting part arranged at one end of the tooth frame and a thread lifting transmission mechanism, the feeding thread hooking driving source is connected with the rotating shuttle and the thread lifting connecting part of the tooth frame through the thread lifting transmission mechanism, and the feeding thread hooking driving source is independent of a driving source used for driving a needle to operate in a sewing machine.

Further, the feeding thread hooking mechanism further comprises a feeding module independent of the feeding thread hooking module, the feeding module comprises a feeding driving source, a feeding connecting portion arranged at the other end of the dental framework and a first feeding transmission mechanism, the feeding driving source is connected with the feeding connecting portion of the dental framework through the first feeding transmission mechanism, and the feeding thread hooking driving source and the feeding driving source are mutually independent.

Further, the feeding and hooking module further comprises a feeding connecting part arranged at the other end of the tooth frame and a second feeding transmission mechanism, and one transmission part in the lifting tooth hooking transmission mechanism is connected with the feeding connecting part of the tooth frame through the second feeding transmission mechanism.

Further, the thread lifting and hooking transmission mechanism comprises a lifting and hooking shaft and a lower shaft which are rotatably supported in a sewing machine shell, a shaft transmission unit connected between the lifting and hooking shaft and the lower shaft, and a lifting and hooking transmission unit connected between the lifting and hooking shaft and a lifting and hooking connection part of the frame, wherein the lifting and hooking shaft or the lower shaft is in transmission connection with a feeding and hooking driving source and is driven to rotate by the feeding and hooking driving source, the shaft transmission unit enables the rotation ratio of the lower shaft to the lifting and hooking shaft to be 2:1, and the rotating shuttle is fixed at the end part of the lower shaft.

Further, the lifting tooth transmission unit comprises a first lifting tooth eccentric wheel fixed on the lifting tooth shaft and a first lifting tooth connecting rod, the first lifting tooth eccentric wheel is provided with a first lifting tooth eccentric shaft part eccentric to the lifting tooth shaft, and one end of the first lifting tooth connecting rod is rotatably arranged on the first lifting tooth eccentric shaft part, and the other end of the first lifting tooth connecting rod is hinged with the lifting tooth connecting part of the tooth frame.

Further, the lifting tooth transmission unit comprises a second lifting tooth eccentric wheel fixed on the lifting tooth shaft, a second lifting tooth connecting rod, a transmission shaft parallel to the lifting tooth shaft, a lifting tooth swinging rod fixed at one end of the transmission shaft, a lifting tooth crank fixed at the other end of the transmission shaft and a third lifting tooth connecting rod, wherein the second lifting tooth eccentric wheel is provided with a second lifting tooth eccentric shaft eccentric part eccentric to the lifting tooth shaft, one end of the second lifting tooth connecting rod is rotatably arranged on the second lifting tooth eccentric shaft, the other end of the second lifting tooth connecting rod is hinged with the lifting tooth swinging rod, and two ends of the third lifting tooth connecting rod are respectively hinged with the lifting tooth crank and the lifting tooth connecting part of the tooth frame.

Further, the lifting tooth transmission unit comprises a second lifting tooth eccentric wheel fixed on the lifting tooth shaft, a second lifting tooth connecting rod, a transmission shaft parallel to the lifting tooth shaft, a lifting tooth swinging rod fixed at one end of the transmission shaft, a lifting tooth fork-shaped crank fixed at the other end of the transmission shaft and a lifting tooth sliding block, wherein the second lifting tooth eccentric wheel is provided with a second lifting tooth eccentric shaft eccentric part eccentric to the lifting tooth shaft, one end of the second lifting tooth connecting rod is rotatably arranged on the second lifting tooth eccentric shaft, the other end of the second lifting tooth connecting rod is hinged with the lifting tooth swinging rod, a lifting tooth sliding groove in sliding fit with the lifting tooth sliding block is formed in the lifting tooth fork-shaped crank, and the lifting tooth sliding block is hinged with a lifting tooth connecting part of the tooth frame.

Further, the shaft transmission unit comprises a first belt wheel fixed on the lower shaft, a second belt wheel fixed on the lifting tooth shaft, and a transmission belt connecting the first belt wheel and the second belt wheel.

Further, the shaft transmission unit comprises a first gear fixed on the lifting tooth shaft, an intermediate shaft rotatably supported in the sewing machine shell, a second gear fixed on the intermediate shaft and a third gear fixed on the lower shaft, one shaft of the lifting tooth shaft, the lower shaft and the intermediate shaft is in transmission connection with the feeding thread hooking driving source and is driven to rotate by the feeding thread hooking driving source, the first gear is meshed with the second gear, and the second gear is meshed with the third gear.

Further, the shaft transmission unit comprises a first gear fixed on the lifting tooth shaft and a third gear fixed on the lower shaft, the lifting tooth shaft or the lower shaft is in transmission connection with the feeding hooking driving source and is driven to rotate by the feeding hooking driving source, and the first gear is meshed with the third gear. .

Further, the lifting tooth thread hooking transmission mechanism is provided with a lifting tooth shaft rotatably supported in the sewing machine shell, the second feeding transmission mechanism comprises a feeding shaft parallel to the lifting tooth shaft, a feeding eccentric wheel fixed on the lifting tooth shaft, a first feeding connecting rod, a feeding swing seat with a fixed swing fulcrum, a first feeding swing rod, a second feeding swing rod and a first feeding crank and a frame seat both fixed on the feeding shaft, one end of the first feeding connecting rod is rotatably mounted on the feeding eccentric wheel, the other end of the first feeding connecting rod, one end of the first feeding swing rod and one end of the second feeding swing rod are hinged coaxially, the other end of the first feeding swing rod is hinged with the feeding swing seat, the other end of the second feeding swing rod is hinged with the first feeding crank, and the frame seat is hinged with a feeding connecting part of the frame.

Further, the feeding thread hooking mechanism further comprises a needle distance adjusting module independent of the feeding thread hooking module, the needle distance adjusting module comprises a needle distance adjusting driving source independent of the feeding thread hooking driving source, and the needle distance adjusting driving source is in transmission connection with the cloth feeding swing seat and drives the cloth feeding swing seat to rotate around a fixed swing fulcrum of the cloth feeding swing seat.

The application also provides a sewing machine, wherein the feeding thread hooking mechanism is arranged in the sewing machine.

As described above, the flexible adjustable feeding thread hooking mechanism and the sewing machine provided by the invention have the following beneficial effects:

According to the application, the thread lifting function and the thread lifting function of the sewing machine are integrated into an independent functional module, and the thread lifting are driven by the independent feeding thread lifting driving source, so that the relative time sequence of the feeding thread lifting driving source and the driving source for driving the needle to operate in the sewing machine is adjustable, and the matching time sequence of the rotating shuttle and the needle and the matching time sequence of the up-and-down reciprocating motion of the feed dog and the needle can be adjusted, and the motion track form of the feed dog can be adjusted, thereby greatly improving the sewing adaptability of the sewing machine.

Drawings

Fig. 1 is a schematic view of a structure of a sewing machine in the prior art.

Fig. 2 is a schematic structural diagram of a flexible feeding hooking mechanism according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of the feeding hooking module in fig. 2.

Fig. 4 is a schematic structural view of the cloth feeding module in fig. 2.

Fig. 5 is a schematic diagram showing the movement trace change of the feed dog in fig. 2.

Fig. 6 is a schematic structural diagram of a second embodiment of a flexible and adjustable feeding hooking mechanism according to the present application.

Fig. 7 is a schematic structural diagram of a third embodiment of a flexible and adjustable feeding hooking mechanism according to the present application.

Fig. 8 is a schematic structural diagram of a fourth embodiment of a flexible and adjustable feeding hooking mechanism according to the present application.

Fig. 9 and 10 are schematic structural views of a fifth embodiment of a flexible and adjustable feeding hooking mechanism according to the present application.

Fig. 11 is a schematic structural view of a feed dog gear unit in a sixth embodiment of a flexibly adjustable feed dog mechanism of the present application.

FIG. 12 is a schematic view of a modular sewing machine incorporating a first embodiment of a feed hook mechanism according to the present application.

FIG. 13 is a schematic view of a fifth embodiment of a modular sewing machine incorporating a feed hook mechanism according to the present application.

Fig. 14 is a schematic structural view of a seventh embodiment of a flexible and adjustable feeding hooking mechanism according to the present application.

Fig. 15 is a schematic structural diagram of the feeding hooking module in fig. 14.

Fig. 16 is a schematic view of the structure of the central shaft transmission unit in fig. 14.

Fig. 17 is a schematic structural diagram of an eighth embodiment of a flexible and adjustable feeding hooking mechanism according to the present application.

Fig. 18 is a schematic structural view of a flexible feeding hooking mechanism according to a ninth embodiment of the present application.

Fig. 19 is a schematic view of a flexible feeding hooking mechanism according to a tenth embodiment of the present application.

Fig. 20 is a schematic structural view of the lifting tooth transmission unit in fig. 19.

Fig. 21 is a schematic view of the structure of the central shaft transmission unit in fig. 19.

FIG. 22 is a schematic view of a modular sewing machine incorporating a feed hooking mechanism according to a seventh embodiment of the application.

Description of element reference numerals

10. Tooth rack

101. Lifting tooth connecting part

102. Cloth feeding connecting part

20. Feed dog

30. Feeding thread hooking module

31. Feeding wire hooking driving source

32. Rotating shuttle

33. Lifting shaft

34. Lower shaft

350. First lifting tooth eccentric wheel

351. First lifting tooth connecting rod

352. Second lifting tooth eccentric wheel

353. Second lifting tooth connecting rod

354. Transmission shaft

355. Tooth lifting swing rod

356. Lifting tooth crank

357. Third lifting tooth connecting rod

358. Fork-shaped crank for lifting tooth

359. Lifting tooth sliding block

360. First belt pulley

361. Second belt wheel

362. Transmission belt

363. First gear

364. Intermediate shaft

365. Second gear

366. Third gear

370. Cloth feeding shaft

371. Cloth feeding eccentric wheel

372. First cloth feeding connecting rod

373. Cloth feeding swing seat

374. First cloth feeding swing rod

375. Second cloth feeding swing rod

376. First cloth feeding crank

40. Cloth feeding module

41. Cloth feeding driving source

42. Dental frame base

43. First cloth feeding crank

44. First cloth feeding connecting rod

50. Needle distance adjusting module

51. Needle pitch adjusting driving source

60. Thorn cloth take-up module

61. Thorn cloth take-up driving source

62. Needle bar

63. Machine needle

70. Supporting seat

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used herein for descriptive purposes only and not for purposes of limitation, and are intended to limit the scope of the invention as defined by the claims and the relative terms thereof as construed as corresponding to the claims.

The application provides a sewing machine, in particular a modularized sewing machine, which is provided with a flexible adjustable feeding thread hooking mechanism. For convenience of description, the moving direction of the sewing material when the modular sewing machine is forward-sewn is defined as a front direction, a horizontal direction orthogonal to the front-rear direction is defined as a left-right direction, and a vertical direction orthogonal to the front-rear direction is defined as an up-down direction. Several preferred embodiments of the modular sewing machine are provided below. The following provides several preferred embodiments of a flexibly adjustable feed thread hooking mechanism and modular sewing machine.

Flexibly adjustable feeding thread hooking mechanism embodiment one

As shown in fig. 2 and 3, an embodiment of a feeding and hooking mechanism capable of being flexibly adjusted comprises a tooth frame 10, a feeding tooth 20 fixedly installed on the tooth frame 10 and a feeding and hooking module 30, wherein the feeding and hooking module 30 comprises a feeding and hooking driving source 31, a rotatable rotating shuttle 32, a lifting tooth connecting part 101 arranged at the rear end of the tooth frame 10 and a lifting tooth hooking transmission mechanism, and the feeding and hooking driving source 31 is connected with the rotating shuttle 32 and the lifting tooth connecting part 101 of the tooth frame 10 through the lifting tooth hooking transmission mechanism. In particular, the feeding and hooking driving source 31 is independent from a driving source for driving the needle 63 in the sewing machine, and the driving source for driving the needle 63 in the sewing machine is defined as a thorn and take-up driving source 61. The feeding hooking driving source 31 is a motor.

When the modularized sewing machine provided with the first feeding and thread hooking mechanism embodiment operates, the feeding and thread hooking driving source 31 drives the rotating shuttle 32 to rotate circumferentially through the thread lifting and hooking driving mechanism to perform thread hooking action, the feeding and thread hooking driving source 31 drives the feed rack 10 to reciprocate up and down through the thread lifting and hooking driving mechanism, and the feed rack 10 drives the feed dog 20 to reciprocate up and down together to perform the thread lifting action. Thus, the feeding thread hooking module 30 completes the thread hooking action and the thread lifting action, and cooperates with other functional modules in the sewing machine to complete the sewing. In particular, the application integrates the thread lifting function and the thread hooking function of the sewing machine into an independent feeding thread hooking module 30, and uses an independent feeding thread hooking driving source 31 to drive the thread hooking and the thread lifting, thereby realizing the relative time sequence adjustment of the feeding thread hooking driving source 31 and a thorn thread picking driving source 61 used for driving the operation of a needle 63 in the sewing machine, thereby being capable of adjusting the matching time sequence of the rotating shuttle 32 and the needle 63 and the matching time sequence of the up-and-down reciprocating motion of the feed dog 20 and the needle 63, and being capable of adjusting the motion track form of the feed dog 20, thereby greatly improving the sewing adaptability of the sewing machine.

Further, as shown in fig. 2 and 3, the feeding and hooking mechanism further includes a feeding module 40 independent of the feeding and hooking module 30, the feeding module 40 includes a feeding driving source 41, a feeding connecting portion 102 disposed at the front end of the dental frame 10, and a first feeding transmission mechanism, the feeding driving source 41 is connected with the feeding connecting portion 102 of the dental frame 10 through the first feeding transmission mechanism, and drives the dental frame 10 to reciprocate back and forth, and the dental frame 10 drives the feeding teeth 20 to reciprocate back and forth together, so as to perform a feeding operation. In particular, the feeding and hooking driving source 31 and the feeding driving source 41 are independent of each other, and the feeding driving source 41 and the needling and taking-up driving source 61 for driving the needle 63 to operate in the sewing machine are independent of each other. The cloth feed drive source 41 is a motor. Preferably, as shown in fig. 2 and 4, the first cloth feed transmission mechanism includes a second cloth feed crank 43 having one end fixed to a motor shaft of the cloth feed driving source 41, a second cloth feed link 44, and a frame base 42 having a fixed swing fulcrum, both ends of the second cloth feed link 44 being hinged to the other end of the second cloth feed crank 43 and the frame base 42, respectively. When the feed drive source 41 rotates, the second feed crank 43 is driven to reciprocate, and the second feed link 44 and the carriage base 42 drive the carriage 10 and the feed dog 20 to reciprocate back and forth, thereby performing a feed operation.

Therefore, the first embodiment of the feeding and thread hooking mechanism comprises two functional modules, namely a feeding and thread hooking module 30 and a feeding and thread hooking module 40 which are independent of each other, wherein the feeding and thread hooking module 30 is also a thread lifting and hooking module, the independent feeding and thread hooking driving source 31 is used for driving the thread hooking and the thread lifting, the independent feeding and thread hooking module 40 is used for driving the feeding and thread lifting, and the driving of the thread hooking and thread lifting and the driving of the feeding and the driving of the needling and the thread picking in the sewing machine are in an independent relationship. In this way, on one hand, the relative time sequence of the feeding and thread hooking driving source 31 and the needling and thread picking driving source 61 is adjustable, so that the matching time sequence of the rotating shuttle 32 and the needle 63 can be adjusted, the hook time of the rotating shuttle 32 relative to the hook time of the needle 63 is early, the hook time of the thin material is late, and the hook time of the thick material is sewn, on the other hand, the relative time sequence of the feeding and thread hooking driving source 31 and the feeding and thread picking driving source 41 is also adjustable, on the other hand, the output rule of the feeding and thread hooking driving source 41 relative to the feeding and thread hooking driving source 31 can be also adjusted, the stitch length can be adjusted, the forward and backward sewing can be switched, and the form of the feeding track of the feeding thread 20 can be changed, for example, the elliptical feeding track shown in fig. 5a, the front triangle feeding track shown in fig. 5b, the rear triangle feeding track shown in fig. 5c, or the rectangular feeding track shown in fig. 5d, wherein the elliptical feeding track and the front triangle feeding track are suitable for the thin material and the middle material, and the rectangular feeding track suitable for the thick material. Thus, the first embodiment of the feeding and thread hooking mechanism can adjust the early and late time of the thread hooking time of the rotating shuttle 32 relative to the needle 63 and the feeding track of the feeding teeth 20, so as to greatly improve the sewing adaptability of the sewing machine.

Further, as shown in fig. 2 and 3, the thread lifting and hooking transmission mechanism includes a lifting and hooking shaft 33 and a lower shaft 34 both rotatably supported in the sewing machine casing, a shaft transmission unit connected between the lifting and hooking shaft 33 and the lower shaft 34, and a lifting and hooking transmission unit connected between the lifting and hooking shaft 33 and the lifting and hooking portion 101 of the frame 10, the lifting and hooking shaft 33 and the lower shaft 34 both extend left and right, the right end of the lifting and hooking shaft 33 is fixed to the motor shaft of the feeding and hooking driving source 31 through a coupling, so that the lifting and hooking shaft 33 is directly driven to rotate by the feeding and hooking driving source 31, the lifting and hooking shaft 33 is driven to rotate circumferentially around the central axis thereof by the lower shaft 34 through the shaft transmission unit, and the shaft transmission unit makes the rotation ratio of the lower shaft 34 and the lifting and hooking shaft 33 2:1, and the rotating shuttle 32 is fixed to the end of the lower shaft 34.

Preferably, as shown in fig. 2 and 3, the shaft transmission unit includes a first pulley 360 fixed to the lower shaft 34, a second pulley 361 fixed to the feed lifting shaft 33, and a transmission belt 362 connecting the first pulley 360 and the second pulley 361. The lifting tooth transmission unit comprises a first lifting tooth eccentric wheel 350 fixed at the left end of the lifting tooth shaft 33 and a first lifting tooth connecting rod 351, wherein the first lifting tooth eccentric wheel 350 is provided with a first lifting tooth eccentric shaft part eccentric to the lifting tooth shaft 33, one end of the first lifting tooth connecting rod 351 is rotatably arranged on the first lifting tooth eccentric shaft part, and the other end of the first lifting tooth connecting rod 351 is hinged with the lifting tooth connecting part 101 of the tooth frame 10.

Flexible adjustable feeding thread hooking mechanism embodiment II

The second flexible adjustable feed hooking mechanism embodiment differs from the first flexible adjustable feed hooking mechanism embodiment only in that the connection point of the feed hooking drive source 31 and the feed lifting hooking drive mechanism is different. Specifically, as shown in fig. 6, the right end of the lower shaft 34 is fixedly connected with the motor shaft of the feeding and hooking driving source 31 through a coupling, so that the lower shaft 34 is directly driven to rotate by the feeding and hooking driving source 31, the lower shaft 34 drives the lifting shaft 33 to rotate through a shaft transmission unit, and the shaft transmission unit enables the rotation speed ratio of the lower shaft 34 to the lifting shaft 33 to be 2:1. The shaft transmission unit is still in the form of a synchronous pulley.

Flexibly adjustable feeding thread hooking mechanism embodiment III

The third and first flexible adjustable feeding and hooking mechanism embodiments are different only in the structure of the shaft transmission unit. Specifically, as shown in fig. 7, the shaft transmission unit includes a first gear 363 fixed on the lift pin 33, an intermediate shaft 364 rotatably supported in the sewing machine housing and parallel to the lift pin 33, a second gear 365 fixed on the intermediate shaft 364, and a third gear 366 fixed on the lower shaft 34, the right end of the lift pin 33 is fixed to the motor shaft of the feeding-hooking driving source 31 through a coupling, the lift pin 33 is directly driven to rotate by the feeding-hooking driving source 31, the first gear 363 is engaged with the second gear 365, and the second gear 365 is engaged with the third gear 366.

Flexibly adjustable feeding thread hooking mechanism embodiment IV

The fourth and first flexible adjustable feeding and hooking mechanism embodiments differ only in the structure of the shaft transmission unit. Specifically, as shown in fig. 8, the shaft transmission unit includes a first gear 363 fixed on the lift shaft 33, an intermediate shaft 364 rotatably supported in the sewing machine housing and parallel to the lift shaft 33, a second gear 365 fixed on the intermediate shaft 364, and a third gear 366 fixed on the lower shaft 34, the right end of the intermediate shaft 364 is fixed to the motor shaft of the feeding-hooking driving source 31 through a coupling, the intermediate shaft 364 is directly driven to rotate by the feeding-hooking driving source 31, the first gear 363 is engaged with the second gear 365, and the second gear 365 is engaged with the third gear 366.

Flexibly adjustable feeding thread hooking mechanism embodiment five

The fifth flexible adjustable feeding and hooking mechanism embodiment differs from the first flexible adjustable feeding and hooking mechanism embodiment only in the structure of the shaft transmission unit and the lifting tooth transmission unit. Specifically, as shown in fig. 9 and 10, the shaft transmission unit includes a first gear 363 fixed on the lifting shaft 33 and a third gear 366 fixed on the lower shaft 34, and the right end of the lifting shaft 33 is fixedly connected with the motor shaft of the feeding hooking driving source 31 through a coupling, so that the lifting shaft 33 is directly driven to rotate by the feeding hooking driving source 31, and the first gear 363 is meshed with the third gear 366, so as to drive the lower shaft 34 to rotate. The lifting tooth transmission unit comprises a second lifting tooth eccentric wheel 352 fixed on the lifting tooth shaft 33, a second lifting tooth connecting rod 353, a transmission shaft 354 parallel to the lifting tooth shaft 33, a lifting tooth swinging rod 355 fixed at the right end of the transmission shaft 354, a lifting tooth crank 356 fixed at the left end of the transmission shaft 354 and a third lifting tooth connecting rod 357, wherein the second lifting tooth eccentric wheel 352 is provided with a second lifting tooth eccentric shaft part eccentric to the lifting tooth shaft 33, one end of the second lifting tooth connecting rod 353 is rotatably arranged on the second lifting tooth eccentric shaft part, the other end of the second lifting tooth connecting rod 353 is hinged with the lifting tooth swinging rod 355, and two ends of the third lifting tooth connecting rod 357 are respectively hinged with the lifting tooth crank 356 and the lifting tooth connecting part 101 of the tooth frame 10.

Flexibly adjustable feeding thread hooking mechanism embodiment six

The sixth flexible adjustable feeding hooking mechanism embodiment differs from the fifth flexible adjustable feeding hooking mechanism embodiment only in that the structure of the lifting tooth transmission unit, specifically, the connection structure between the transmission shaft 354 and the lifting tooth connection portion 101 of the tooth frame 10 is different. Specifically, as shown in fig. 9 and 11, the tooth lifting transmission unit includes a second tooth lifting eccentric wheel 352 fixed on the tooth lifting shaft 33, a second tooth lifting connecting rod 353, a transmission shaft 354 parallel to the tooth lifting shaft 33, a tooth lifting swing rod 355 fixed on the right end of the transmission shaft 354, a tooth lifting fork crank 358 fixed on the left end of the transmission shaft 354, and a tooth lifting slide block 359, wherein the second tooth lifting eccentric wheel 352 has a second tooth lifting eccentric shaft portion eccentric to the tooth lifting shaft 33, one end of the second tooth lifting connecting rod 353 is rotatably mounted on the second tooth lifting eccentric shaft portion, the other end is hinged to the tooth lifting swing rod 355, a tooth lifting slide groove in sliding fit with the tooth lifting slide block 359 is formed in the tooth lifting crank 358, and the tooth lifting slide block 359 is hinged to the tooth lifting connecting portion 101 of the tooth frame 10.

In the first to sixth embodiments of the flexible and adjustable feeding and hooking mechanism, the feeding and hooking mechanism includes two feeding and hooking modules 30 (i.e. a feed lifting and hooking module) and a feeding module 40, which are independent from each other and each use independent driving sources. Based on this, the application also provides a modularized sewing machine with at least three independent functional modules, which comprises any one of the feeding and thread hooking mechanisms from the first embodiment to the sixth embodiment of the feeding and thread hooking mechanism and a thorn cloth thread picking module 60.

For example, as shown in fig. 12, the modular sewing machine comprises the first embodiment of the feeding and hooking mechanism and the needling and picking module 60, that is, the feeding and hooking module 30, the feeding and picking module 40 and the needling and picking module 60 are three independent functional modules, wherein the needling and picking module 60 comprises the needling and picking driving source 61, a needle bar 62 capable of moving up and down in a reciprocating manner, a needle 63 mounted at the lower end of the needle bar 62, a picking lever capable of swinging up and down in a reciprocating manner, and a needling and picking driving mechanism, and the needling and picking driving source 61 is connected with the needle bar 62 and the picking lever through the needling and picking driving mechanism and drives the needle bar 62 and the picking lever to move. The needling thread take-up drive source 61, the feeding hooking drive source 31 and the feeding drive source 41 are three mutually independent drive sources. The thorn cloth thread take-up module 60, the pay-off colludes line module 30 and the work feed module 40 and modularizes, and every functional module adopts independent driving source to drive for the thorn cloth thread take-up module 60, pay-off colludes line module 30 and work feed module 40 mutually independent, mutually noninterfere, cancel the transmission structure between upper shaft and the other functional module in the former sewing machine, shortened the drive chain of each functional module on the one hand, avoid the vibration, the noise scheduling problem that arouse because of the drive chain overlength on the other hand can adjust the relative motion time sequence and the motion law of each functional module, promote sewing adaptability.

For another example, as shown in fig. 13, the modular sewing machine includes the fifth embodiment of the feeding and hooking mechanism and the needling thread take-up module 60, and the structure of the needling thread take-up module 60 is the same as that of the needling thread take-up module 60 in fig. 12. In addition, as shown in fig. 13, the fifth embodiment of the feeding and hooking mechanism further includes a supporting base 70 fixed to a bottom plate portion of the sewing machine housing, the feeding and hooking driving source 31 is fixedly mounted on the supporting base 70 by screws, and the intermediate shaft 364, the lifting shaft 33 and the lower shaft 34 are rotatably supported and mounted on the supporting base 70 by bearings, i.e., mounted to the sewing machine housing with respect to the support. The supporting seat 70 has a cavity with an upward opening, and the transmission component in the shaft transmission unit is located in the cavity of the supporting seat 70, and the cavity of the supporting seat 70 is filled with grease or lubricating oil to lubricate the transmission component in the shaft transmission unit. And, the support seat 70 is connected with the cover plate at the upper end opening of the cavity in a sealing way, and the cavity is closed to form a closed space to prevent pollution.

Flexibly adjustable feeding thread hooking mechanism seventh embodiment

As shown in fig. 14 and 15, a seventh embodiment of the feeding and hooking mechanism capable of being flexibly adjusted includes a frame 10, a feed dog 20 fixedly installed on the frame 10, and a feeding and hooking module 30, wherein the feeding and hooking module 30 includes a feeding and hooking driving source 31, a rotatable rotating shuttle 32, a feed lifting connection part 101 disposed at the rear end of the frame 10, a feed lifting and hooking transmission mechanism, a feed feeding connection part 102 disposed at the front end of the frame 10, and a second feed transmission mechanism, the feeding and hooking driving source 31 is connected with the rotating shuttle 32 and the feed lifting connection part 101 of the frame 10 through the feed lifting and hooking transmission mechanism, and one transmission component of the feed lifting and hooking transmission mechanism is connected with the feed feeding connection part 102 of the frame 10 through the second feed transmission mechanism. In particular, the feed hooking driving source 31 is independent of the needling take-up driving source 61 for driving the needle 63 to operate in the sewing machine. The feeding hooking driving source 31 is a motor.

When the modularized sewing machine provided with the feeding and thread hooking mechanism in the seventh embodiment runs, the feeding and thread hooking driving source 31 drives the rotating shuttle 32 to rotate circumferentially through the thread lifting and hooking driving mechanism to perform thread hooking action, the feeding and thread hooking driving source 31 drives the feed rack 10 and the feed dog 20 to reciprocate up and down through the thread lifting and hooking driving mechanism to perform thread lifting action, one driving part in the thread lifting and hooking driving mechanism drives the feed rack 10 and the feed dog 20 to reciprocate back and forth through the second feed driving mechanism to perform feed action, and the feed dog 20 performs combined motion of up-down reciprocation and back-and-forth reciprocation. Thus, the feeding and thread hooking module 30 completes the thread hooking action, the thread lifting action and the cloth feeding action, and then cooperates with other functional modules in the sewing machine to complete the sewing. In particular, the application integrates the feed lifting function, the cloth feeding function and the thread hooking function of the sewing machine into an independent feed thread hooking module 30, uses an independent feed thread hooking driving source 31 to drive thread hooking, feed lifting and cloth feeding, realizes the relative time sequence adjustment of the feed thread hooking driving source 31 and a thorn cloth thread picking driving source 61 used for driving a needle 63 to operate in the sewing machine, thereby being capable of adjusting the matching time sequence of a rotating shuttle 32 and the needle 63 and the matching time sequence of the movement of a feed dog 20 and the needle 63, and adjusting the movement track form of the feed dog 20, thereby greatly improving the sewing adaptability of the sewing machine.

Further, as shown in fig. 14 and 15, the thread lifting and hooking transmission mechanism includes a lifting and hooking shaft 33 and a lower shaft 34 both rotatably supported in the sewing machine casing, a shaft transmission unit connected between the lifting and hooking shaft 33 and the lower shaft 34, and a lifting and hooking transmission unit connected between the lifting and hooking shaft 33 and the lifting and hooking portion 101 of the frame 10, the lifting and hooking shaft 33 and the lower shaft 34 both extend left and right, the right end of the lifting and hooking shaft 33 is fixed to the motor shaft of the feeding and hooking driving source 31 through a coupling, so that the lifting and hooking shaft 33 is directly driven to rotate by the feeding and hooking driving source 31, the lifting and hooking shaft 33 is driven to rotate by the shaft transmission unit again, the shaft transmission unit makes the rotation ratio of the lower shaft 34 to the lifting and hooking shaft 33 2:1, the rotating shuttle 32 is fixed to the end of the lower shaft 34, and the lifting and hooking shaft 33 is connected to the feeding and hooking portion 102 of the frame 10 through a second feeding and hooking transmission mechanism.

As shown in fig. 16, the shaft transmission unit includes a first gear 363 fixed on the lift shaft 33, an intermediate shaft 364 rotatably supported in the sewing machine housing and parallel to the lift shaft 33, a second gear 365 fixed on the intermediate shaft 364, and a third gear 366 fixed on the lower shaft 34, the right end of the lift shaft 33 is fixed to the motor shaft of the feeding-hooking driving source 31 through a coupling, the lift shaft 33 is directly driven to rotate by the feeding-hooking driving source 31, the first gear 363 is engaged with the second gear 365, and the second gear 365 is engaged with the third gear 366.

As shown in fig. 14 and 15, the lifter transmission unit includes a first lifter eccentric 350 fixed to the left end of the lifter shaft 33, and a first lifter link 351, the first lifter eccentric 350 having a first lifter eccentric shaft portion eccentric to the lifter shaft 33, one end of the lifter link being rotatably mounted to the first lifter eccentric shaft portion, and the other end being hinged to the lifter link 101 of the frame 10.

As shown in fig. 14 and 15, the second cloth feed transmission mechanism includes a cloth feed shaft 370 parallel to the feed lifting shaft 33, a cloth feed eccentric 371 fixed to the feed lifting shaft 33, a first cloth feed link 372, a cloth feed swing seat 373 having a fixed swing fulcrum, a first cloth feed swing lever 374, a second cloth feed swing lever 375, a first cloth feed crank 376 fixed to the right end of the cloth feed shaft 370, and a frame seat 42 fixed to the left end of the cloth feed shaft 370, the rear end of the first cloth feed link 372 is rotatably mounted to the cloth feed eccentric 371, the front end of the first cloth feed link 372, one end of the first cloth feed swing lever 374, and one end of the second cloth feed swing lever 375 are coaxially hinged, the other end of the first cloth feed swing lever 374 is hinged to the cloth feed swing seat 373, the other end of the second cloth feed swing lever is hinged to the first cloth feed crank 376, and the frame seat 42 is hinged to the cloth feed connection 102 of the frame 10. The angle of the cloth feed swinging seat 373 determines the transmission efficiency of the second cloth feed transmission mechanism, that is, determines the swinging amplitude of the second cloth feed transmission mechanism by which the lifting tooth shaft 33 drives the cloth feed shaft 370 to swing reciprocally, or determines the moving amplitude of the back and forth reciprocating motion of the tooth frame 10 and the cloth feed tooth 20, thereby determining the needle pitch of the modular sewing machine.

Further, as shown in fig. 14 and 15, the seventh embodiment of the flexible feeding and hooking mechanism further includes a stitch length adjusting module 50 independent of the feeding and hooking module 30, and the stitch length adjusting module 50 includes a stitch length adjusting driving source 51 independent of the feeding and hooking driving source 31, and the stitch length adjusting driving source 51 is in driving connection with the feeding swing seat 373 to drive the feeding swing seat 373 to rotate around its fixed swing fulcrum. The needle distance adjusting driving source 51 is a motor, and a motor shaft of the needle distance adjusting driving source 51 is fixedly connected with the cloth feeding swinging seat 373, so that the needle distance adjusting driving source 51 can directly drive the cloth feeding swinging seat 373 to rotate around a fixed swinging fulcrum thereof, thereby changing or maintaining the angle of the cloth feeding swinging seat 373, and correspondingly changing or maintaining the needle distance of the modularized sewing machine. The fixed swing fulcrum of the cloth feed swing seat 373 is located on the central axis of the motor shaft of the stitch length adjusting drive source 51, and the motor shaft of the stitch length adjusting drive source 51 extends laterally.

Flexible adjustable feeding thread hooking mechanism embodiment eight

The eighth and seventh flexible adjustable feeding and hooking mechanism embodiments differ only in the connection form between the feed lifting and hooking driving mechanism and the feeding and hooking driving source 31. Specifically, as shown in fig. 17, the motor shaft of the feeding and hooking driving source 31 is connected to the right end of the lower shaft 34 through a coupling, so that the lower shaft 34 is directly driven to rotate by the feeding and hooking driving source 31, the lower shaft 34 drives the lifting shaft 33 to rotate through a shaft transmission unit, and the lifting shaft 33 drives the cloth feeding shaft 370 to swing through a second cloth feeding transmission mechanism.

Flexibly adjustable feeding thread hooking mechanism embodiment nine

The difference between the flexible adjustable feeding and hooking mechanism embodiment nine and the flexible adjustable feeding and hooking mechanism embodiment seven is that the connection form of the lifting tooth and hooking transmission mechanism and the feeding and hooking driving source 31 is different. Specifically, as shown in fig. 18, the motor shaft of the feeding and hooking driving source 31 is connected to the right end of the intermediate shaft 364 through a coupling, so that the intermediate shaft 364 is directly driven to rotate by the feeding and hooking driving source 31, the intermediate shaft 364 drives the lifting shaft 33 and the lower shaft 34 to rotate through a shaft transmission unit, and the lifting shaft 33 drives the cloth feeding shaft 370 to swing through a second cloth feeding transmission mechanism.

Flexibly adjustable feeding thread hooking mechanism embodiment ten

The tenth and seventh embodiments of the flexibly adjustable feed hooking mechanism differ only in the structure of the feed lifting hooking mechanism. Specifically, as shown in fig. 19 and 20, the tooth lifting transmission unit includes a second tooth lifting eccentric gear 352 fixed at the left end of the tooth lifting shaft 33, a second tooth lifting link 353, a transmission shaft 354 parallel to the tooth lifting shaft 33 and distributed at the left side of the tooth lifting shaft 33, a tooth lifting swing rod 355 fixed at the right end of the transmission shaft 354, a tooth lifting crank 356 fixed at the left end of the transmission shaft 354, and a third tooth lifting link 357, wherein the second tooth lifting eccentric gear 352 has a second tooth lifting eccentric shaft portion eccentric to the tooth lifting shaft 33, one end of the second tooth lifting link 353 is rotatably mounted at the second tooth lifting eccentric shaft portion, the other end is hinged with the tooth lifting swing rod 355, and both ends of the third tooth lifting link 357 are respectively hinged with the tooth lifting crank 356 and the tooth lifting connection portion 101 of the tooth rack 10. In the tenth embodiment of the feeding and hooking mechanism, the intermediate shaft 364 is omitted from the shaft transmission unit, and as shown in fig. 19 and 21, the shaft transmission unit includes a first gear 363 fixed on the lifting shaft 33, and a third gear 366 fixed on the right end of the lower shaft 34, the right end of the lifting shaft 33 is fixed to the motor shaft of the feeding and hooking driving source 31 through a coupling, and the lifting shaft 33 is directly driven to rotate by the feeding and hooking driving source 31, and the first gear 363 is meshed with the third gear 366.

Flexibly adjustable feeding thread hooking mechanism embodiment eleven

The eleventh flexibly adjustable feed hooking mechanism embodiment differs from the tenth flexibly adjustable feed hooking mechanism embodiment only in that the connection structure between the drive shaft 354 and the frame 10 in the lifting tooth drive unit is different. Specifically, in the eleventh embodiment of the feeding and hooking mechanism, the transmission shaft 354 and the frame 10 are in the form of a fork-shaped crank 358 and a slider 359 as shown in fig. 11. Therefore, the lifting tooth transmission unit comprises a second lifting tooth eccentric wheel 352 fixed at the left end of the lifting tooth shaft 33, a second lifting tooth connecting rod 353, a transmission shaft 354 which is parallel to the lifting tooth shaft 33 and is distributed at the left side of the lifting tooth shaft 33, a lifting tooth swinging rod 355 fixed at the right end of the transmission shaft 354, a lifting tooth fork crank 358 fixed at the left end of the transmission shaft 354, and a lifting tooth sliding block 359, wherein the second lifting tooth eccentric wheel 352 is provided with a second lifting tooth eccentric shaft part eccentric to the lifting tooth shaft 33, one end of the second lifting tooth connecting rod 353 is rotatably arranged at the second lifting tooth eccentric shaft part, the other end is hinged with the lifting tooth swinging rod 355, a lifting tooth sliding groove which is in sliding fit with the lifting tooth sliding block 359 is arranged in the lifting tooth fork crank 358, the lifting tooth sliding block 359 is hinged with the lifting tooth connecting part 101 of the tooth frame 10, and the reciprocating swinging of the lifting tooth shaft 33 realizes the up-and-down reciprocating swinging of the lifting tooth fork crank 358, and the lifting tooth frame 10 and the feeding tooth 20 are driven to reciprocate up and down through the lifting tooth sliding block 359.

In the seventh to eleventh embodiments of the flexible feeding and hooking mechanism, the feeding and hooking mechanism includes an independent feeding and hooking module 30, and the feeding and hooking module 30 has at least a hooking function, a lifting function and a feeding function, and preferably also has a stitch length adjusting function by using an independent feeding and hooking driving source 31. Based on this, the present application further provides a modular sewing machine having at least two independent functional modules, wherein the modular sewing machine includes any one of the feeding and hooking mechanisms of the seventh to eleventh embodiments, and the stab and take-up module 60. For example, as shown in fig. 22, the modular sewing machine includes the feeding and hooking mechanism seventh embodiment and the thorn thread take-up module 60, so that the modular sewing machine has at least the feeding and hooking module 30 and the thorn thread take-up module 60, and preferably further has the stitch length adjusting module 50. The needling thread take-up module 60 includes the needling thread take-up driving source 61, a needle bar 62 capable of moving up and down reciprocally, a needle 63 mounted at the lower end of the needle bar 62, a thread take-up bar capable of swinging up and down reciprocally, and a needling thread take-up driving mechanism, wherein the needling thread take-up driving source 61 is connected with the needle bar 62 and the thread take-up bar through the needling thread take-up driving mechanism, and drives the needle bar 62 and the thread take-up bar to move.

In summary, the present invention effectively overcomes the disadvantages of the prior art and has high industrial utility value.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. The feeding thread hooking mechanism capable of being flexibly adjusted comprises a tooth frame (10) and a feeding thread (20) arranged on the tooth frame (10), and is characterized by further comprising a feeding thread hooking module (30), wherein the feeding thread hooking module (30) comprises a feeding thread hooking driving source (31), a rotatable rotating shuttle (32), a thread lifting connecting part (101) arranged at one end of the tooth frame (10) and a thread lifting transmission mechanism, the feeding thread hooking driving source (31) is connected with the rotating shuttle (32) and the thread lifting connecting part (101) of the tooth frame (10) through the thread lifting transmission mechanism, and the feeding thread hooking driving source (31) is independent of a driving source used for driving a needle (63) to operate in a sewing machine;

the feeding and hooking module (30) further comprises a feeding connecting part (102) arranged at the other end of the tooth frame (10) and a second feeding transmission mechanism, and one transmission part in the lifting and hooking transmission mechanism is connected with the feeding connecting part (102) of the tooth frame (10) through the second feeding transmission mechanism;

The thread lifting and hooking transmission mechanism comprises a lifting and hooking shaft (33) and a lower shaft (34) which are rotatably supported in a sewing machine shell, a shaft transmission unit connected between the lifting and hooking shaft (33) and the lower shaft (34), and a lifting and hooking transmission unit connected between the lifting and hooking shaft (33) and a lifting and hooking connection part (101) of a tooth frame (10), wherein the lifting and hooking shaft (33) or the lower shaft (34) is in transmission connection with a feeding and hooking driving source (31) and is driven to rotate by the feeding and hooking driving source (31), the shaft transmission unit enables the rotation ratio of the lower shaft (34) to the lifting and hooking shaft (33) to be 2:1, and a rotating shuttle (32) is fixed at the end part of the lower shaft (34), and the feeding and hooking driving source (31) is a motor.

2. The feeding and hooking mechanism according to claim 1, further comprising a feeding module (40) independent of the feeding and hooking module (30), wherein the feeding module (40) comprises a feeding driving source (41), a feeding connecting portion (102) arranged at the other end of the dental framework (10), and a first feeding transmission mechanism, the feeding driving source (41) is connected with the feeding connecting portion (102) of the dental framework (10) through the first feeding transmission mechanism, and the feeding and hooking driving source (31) and the feeding driving source (41) are mutually independent.

3. The feeding and hooking mechanism according to claim 1, wherein the lifting tooth transmission unit comprises a first lifting tooth eccentric wheel (350) fixed on the lifting tooth shaft (33) and a first lifting tooth connecting rod (351), the first lifting tooth eccentric wheel (350) is provided with a first lifting tooth eccentric shaft part eccentric to the lifting tooth shaft (33), and one end of the first lifting tooth connecting rod (351) is rotatably arranged on the first lifting tooth eccentric shaft part, and the other end of the first lifting tooth connecting rod is hinged with the lifting tooth connecting part (101) of the tooth frame (10).

4. The feeding and hooking mechanism according to claim 1, wherein the lifting-tooth transmission unit comprises a second lifting-tooth eccentric wheel (352) fixed on the lifting-tooth shaft (33), a second lifting-tooth connecting rod (353), a transmission shaft (354) parallel to the lifting-tooth shaft (33), a lifting-tooth swinging rod (355) fixed on one end of the transmission shaft (354), a lifting-tooth crank (356) fixed on the other end of the transmission shaft (354), and a third lifting-tooth connecting rod (357), the second lifting-tooth eccentric wheel (352) is provided with a second lifting-tooth eccentric shaft eccentric part eccentric to the lifting-tooth shaft (33), one end of the second lifting-tooth connecting rod (353) is rotatably installed on the second lifting-tooth eccentric shaft part, the other end of the second lifting-tooth connecting rod is hinged with the lifting-tooth swinging rod (355), and two ends of the third lifting-tooth connecting rod (357) are respectively hinged with the lifting-tooth crank (356) and the lifting-tooth connecting part (101) of the tooth frame (10).

5. The feeding and hooking mechanism according to claim 1, wherein the feed lifting and feeding unit comprises a second lifting and feeding eccentric wheel (352) fixed on the lifting and feeding shaft (33), a second lifting and feeding connecting rod (353), a transmission shaft (354) parallel to the lifting and feeding shaft (33), a lifting and feeding oscillating rod (355) fixed on one end of the transmission shaft (354), a lifting and feeding fork crank (358) fixed on the other end of the transmission shaft (354), and a lifting and feeding sliding block (359), the second lifting and feeding eccentric wheel (352) is provided with a second lifting and feeding eccentric shaft eccentric part eccentric to the lifting and feeding shaft (33), one end of the second lifting and feeding connecting rod (353) is rotatably arranged on the second lifting and feeding eccentric shaft part, the other end of the second lifting and feeding connecting rod (353) is hinged with the lifting and feeding oscillating rod (355), a lifting sliding groove in sliding fit with the lifting and feeding fork crank (359) is arranged in the lifting and feeding fork crank (358), and the lifting and feeding fork crank (359) is hinged with a lifting and feeding connecting part (101) of the lifting and feeding frame (10).

6. The feeding hooking mechanism of claim 1, wherein the shaft transmission unit comprises a first pulley (360) fixed on the lower shaft (34), a second pulley (361) fixed on the lifting shaft (33), and a transmission belt (362) connecting the first pulley (360) and the second pulley (361).

7. The feeding and thread hooking mechanism as recited in claim 1, wherein the shaft transmission unit comprises a first gear (363) fixed on a feed-up shaft (33), an intermediate shaft (364) rotatably supported in the sewing machine housing, a second gear (365) fixed on the intermediate shaft (364), and a third gear (366) fixed on a lower shaft (34), one of the feed-up shaft (33), the lower shaft (34), and the intermediate shaft (364) is in transmission connection with the feeding and thread hooking driving source (31) and is driven to rotate by the feed-up thread hooking driving source (31), the first gear (363) is meshed with the second gear (365), and the second gear (365) is meshed with the third gear (366).

8. The feeding and thread hooking mechanism according to claim 1, wherein the shaft transmission unit comprises a first gear (363) fixed on a lifting shaft (33) and a third gear (366) fixed on a lower shaft (34), the lifting shaft (33) or the lower shaft (34) is in transmission connection with the feeding and thread hooking driving source (31) and is driven to rotate by the feeding and thread hooking driving source (31), and the first gear (363) is meshed with the third gear (366).

9. The feeding thread hooking mechanism according to claim 1, wherein the thread lifting transmission mechanism is provided with a lifting tooth shaft (33) rotatably supported in a sewing machine shell, the second thread feeding transmission mechanism comprises a thread feeding shaft (370) parallel to the lifting tooth shaft (33), a thread feeding eccentric wheel (371) fixed on the lifting tooth shaft (33), a first thread feeding connecting rod (372), a thread feeding swing seat (373) with a fixed swing fulcrum, a first thread feeding swing rod (374), a second thread feeding swing rod (375), a first thread feeding crank (376) and a tooth frame seat (42) both fixed on the thread feeding shaft (370), one end of the first thread feeding connecting rod (372) is rotatably mounted on the thread feeding eccentric wheel (371), the other end of the first thread feeding connecting rod (372), one end of the first thread feeding swing rod (374) and one end of the second thread feeding rod (375) are coaxially hinged, the other end of the first thread feeding swing rod (374) is hinged with the thread feeding swing seat (373), one end of the second thread feeding swing rod (375) is hinged with the thread feeding swing seat (10), and one end of the second thread feeding swing rod (375) is hinged with the thread feeding crank (102).

10. The feeding thread hooking mechanism according to claim 9, further comprising a needle pitch adjusting module (50) independent of the feeding thread hooking module (30), wherein the needle pitch adjusting module (50) comprises a needle pitch adjusting driving source (51) independent of the feeding thread hooking driving source (31), and the needle pitch adjusting driving source (51) is in transmission connection with the feeding thread swinging seat (373) and drives the feeding thread swinging seat (373) to rotate around a fixed swinging fulcrum of the needle pitch adjusting driving source.

11. A sewing machine, wherein the thread hooking mechanism for feeding is provided in any one of claims 1 to 10.