CN214938342U - Modular sewing machine - Google Patents

Abstract

The utility model provides a modularized sewing machine, which comprises a tooth frame, a cloth feeding tooth, a burling and thread taking module and a tooth lifting and cloth feeding and thread hooking module; the cloth pricking and thread taking-up module comprises a cloth pricking and thread taking-up driving source, a needle rod, a machine needle, a thread taking-up rod and a cloth pricking and thread taking-up transmission mechanism, and the cloth pricking and thread taking-up driving source is connected with the needle rod and the thread taking-up rod through the cloth pricking and thread taking-up transmission mechanism; the feed lifting and hooking module comprises a feed lifting and hooking driving source, a rotating shuttle, a feed lifting connecting part arranged at one end of the tooth rack, a feed conveying connecting part arranged at the other end of the tooth rack and a feed lifting and hooking transmission mechanism, wherein the feed lifting and hooking driving source is connected with the rotating shuttle, the feed lifting connecting part and the feed conveying connecting part through the feed lifting and hooking transmission mechanism. This application adopts independent thorn cloth take-up drive source and lifting teeth work feed to collude the line drive source to drive respectively for mutual independence between thorn cloth take-up module and the lifting teeth work feed colludes the line module, shortens each functional module's drive chain, adjusts each functional module's relative motion chronogenesis, promotes sewing adaptability.

Description

Modular sewing machine

Technical Field

The utility model relates to a sewing machine field especially relates to a modularization sewing machine.

Background

The sewing machine has four basic actions of material needling action, thread picking action, feeding action and thread hooking action, so that basic sewing of sewing materials can be realized, and auxiliary actions such as thread cutting action, presser foot lifting action, thread loosening action, needle pitch adjusting action and the like are added. At present, a sewing machine in the prior art is configured as shown in fig. 1, and mainly includes a main motor, a main shaft 100 driven to rotate by the main motor, a cloth pricking and thread taking-up mechanism 200, a feeding mechanism 300, a thread hooking mechanism 400, a thread cutting mechanism 500, and a presser foot lifting mechanism 600, wherein the cloth pricking and thread taking-up mechanism 200, the feeding mechanism 300, and the thread hooking mechanism 400 are all driven to operate by the main shaft 100, a thread cutting cam in the thread cutting mechanism 500 is driven to rotate by a lower shaft in the thread hooking mechanism 400, the thread cutting mechanism 500 has a thread cutting driving source 501 independent of the main motor, and the presser foot lifting mechanism 600 has a presser foot lifting driving source 601 independent of the main motor. When the sewing machine in the prior art operates, the main motor drives the main shaft 100 to rotate, the main shaft 100 drives the cloth-pricking and thread-taking-up mechanism 200, the feeding mechanism 300 and the thread-hooking mechanism 400 to operate, and the cloth-pricking and thread-taking-up mechanism 200, the feeding mechanism 300 and the thread-hooking mechanism 400 cooperatively act to complete sewing; when the thread needs to be cut, the thread cutting driving source 501 acts to enable the transmission component in the thread cutting mechanism 500 to be matched with the thread cutting cam, the main shaft 100 rotates to enable the lower shaft in the thread hooking mechanism 400 to rotate, and therefore the thread cutting mechanism 500 executes the thread cutting action; when the presser foot needs to be lifted, the presser foot lifting drive source 601 operates to cause the presser foot lifting mechanism 600 to perform the presser foot lifting operation. However, the existing sewing machine has the following disadvantages:

1. the transmission structure is very complex; the power of the cloth pricking and picking mechanism 200, the feeding mechanism 300, the thread hooking mechanism 400 and the thread cutting mechanism 500 is from the main shaft 100, or the power sources of the cloth pricking and picking mechanism 200, the feeding mechanism 300, the thread hooking mechanism 400 and the thread cutting mechanism 500 are main motors, so that the cloth pricking and picking mechanism 200, the feeding mechanism 300 and the thread hooking mechanism 400 are in linkage relation during sewing; during thread cutting, the cloth-pricking and thread-taking-up mechanism 200, the feeding mechanism 300, the thread hooking mechanism 400 and the thread cutting mechanism 500 are in linkage relation, so that relative motion time sequences among the mechanisms are uniquely determined, a user cannot adjust the relative motion time sequences, and the sewing adaptability to different types of fabrics is poor.

2. The sewing machine uses a main motor as a main power source, and respectively transmits power to terminal execution components such as a needle bar and a take-up lever in a cloth pricking and taking-up mechanism 200, a cloth feeding tooth in a feeding mechanism 300, a rotating shuttle in a thread hooking mechanism 400 and a moving blade in a thread trimming mechanism 500 through a relatively complex transmission structure, and an independent thread trimming driving source 501 and a presser foot lifting driving source 601 are additionally arranged for matching action, so that additional functions such as thread trimming, presser foot lifting and the like are realized. Therefore, the whole structure of the sewing machine is complex, the transmission chain is long, and adverse effects such as vibration, noise and the like are easily caused; such as: the high-speed rotation of the two longer feed lifting tooth connecting rods and the cloth feeding connecting rod in the feeding mechanism 300 causes larger noise and is very easy to wear; the overlong transmission chain can cause that the assembly precision of the moving part, the part machining precision requirement and the like can not be accurately ensured.

3. The structure of the shell is complex, and the requirement on manufacturing precision is high; the casing is divided into an upper section and a lower section, in order to realize that the power of the upper section is transmitted to the lower section, and is transmitted from the right end of the casing to the left end of the casing, the feed lifting shaft and the feed feeding shaft in the opposite feed mechanism 300, and the lower shaft in the thread hooking mechanism 400 is all communicated from the whole shaft at the right end of the casing to the left end of the casing, so that the requirements on the coaxiality, the concentricity and the precision of corresponding mounting holes in the casing are very high, and the special processing equipment and the special tool clamp are required to be applied.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a modular sewing machine, which modularizes each functional mechanism in the sewing machine and has independent driving sources, thereby shortening the transmission chain and adjusting the relative motion sequence.

In order to achieve the above object, the present invention provides a modular sewing machine, including the tooth frame and the feed dog installed on the tooth frame, the modular sewing machine further includes:

a cloth pricking and thread picking module: the needle bar is mounted at the lower end of the needle bar, the take-up lever can swing up and down in a reciprocating manner, and the cloth-stabbing take-up driving source is connected with the needle bar and the take-up lever through the cloth-stabbing take-up transmission mechanism;

the feed lifting and thread hooking module comprises: the feed lifting and feeding mechanism comprises a feed lifting and feeding hook driving source, a rotatable rotating shuttle, a feed lifting connecting part arranged at one end of a tooth rack, a feed feeding connecting part arranged at the other end of the tooth rack and a feed lifting and feeding hook transmission mechanism, wherein the feed lifting and feeding hook driving source is connected with the rotating shuttle, the feed lifting and feeding connecting part and the feed feeding connecting part through the feed lifting and feeding hook transmission mechanism;

the cloth pricking and yarn taking-up module and the tooth lifting and yarn feeding hooking module are two mutually independent functional modules, and the cloth pricking and yarn taking-up driving source and the tooth lifting and yarn feeding and yarn hooking driving source are two mutually independent driving sources.

Furthermore, the cloth pricking and thread picking transmission mechanism comprises an upper shaft driven to rotate by a cloth pricking and thread picking driving source, a needle rod crank fixed on the upper shaft, a cloth pricking and thread picking transmission shaft, a connecting rod mechanism and a crank slider mechanism, the cloth pricking and thread picking transmission shaft is provided with a first shaft part eccentric to the upper shaft and a second shaft part eccentric to the first shaft part, the first shaft part is fixed on the needle rod crank and is connected with the thread picking rod through the connecting rod mechanism, and the second shaft part is connected with the needle rod through the crank slider mechanism.

Furthermore, the feed lifting tooth wire feeding and hooking transmission mechanism comprises a feed lifting tooth shaft, a feed feeding shaft, a lower shaft, a first transmission unit, a second transmission unit, a feed lifting tooth transmission unit and a tooth frame seat, wherein the feed lifting tooth shaft, the feed feeding shaft, the lower shaft, the first transmission unit, the second transmission unit, the feed lifting tooth transmission unit and the tooth frame seat are rotatably supported in a sewing machine shell, the first transmission unit is connected between the feed lifting tooth shaft and the feed feeding shaft, the second transmission unit is connected between the feed lifting tooth shaft and a feed lifting tooth connecting part of a tooth frame, the feed lifting tooth shaft or the lower shaft is in transmission connection with the feed lifting tooth wire feeding driving source and is driven to rotate by the feed lifting tooth wire feeding driving source, the second transmission unit enables the rotating speed ratio of the lower shaft to the feed lifting tooth shaft to be 2:1, the tooth frame seat is hinged with the feed feeding connecting part of the tooth frame, and the rotating shuttle is fixed at the end part of the lower shaft.

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

Furthermore, the feed lifting transmission unit comprises a second feed lifting eccentric wheel fixed on the feed lifting shaft, a second feed lifting connecting rod, a transmission shaft parallel to the feed lifting shaft, a feed lifting swing rod fixed at one end of the transmission shaft, a feed lifting crank fixed at the other end of the transmission shaft and a third feed lifting connecting rod, the second feed lifting eccentric wheel is provided with a second feed lifting eccentric shaft part eccentric to the feed lifting shaft, one end of the second feed lifting connecting rod is rotatably arranged on the second feed lifting eccentric shaft part, the other end of the second feed lifting connecting rod is hinged with the feed lifting swing rod, and two ends of the third feed lifting connecting rod are respectively hinged with the feed lifting crank and the feed lifting connecting part of the dental articulator.

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

Furthermore, the first transmission unit comprises a cloth feeding eccentric wheel fixed on the feed lifting shaft, a cloth feeding connecting rod, a cloth feeding swing seat with a fixed swing fulcrum, a first cloth feeding swing rod, a second cloth feeding swing rod and a cloth feeding crank fixed on the cloth feeding shaft, one end of the cloth feeding connecting rod is rotatably installed on the cloth feeding eccentric wheel, the other end of the cloth feeding connecting rod, one end of the first cloth feeding swing rod and one end of the second cloth feeding swing rod are hinged coaxially, the other end of the first cloth feeding swing rod is hinged with the cloth feeding swing seat, and the other end of the second cloth feeding swing rod is hinged with the cloth feeding crank.

Furthermore, the modularized sewing machine further comprises a needle pitch adjusting module independent of the bur cloth picking module and the feed lifting tooth cloth feeding and hooking module, the needle pitch adjusting module comprises a needle pitch adjusting driving source independent of the bur cloth picking driving source and the feed lifting tooth cloth feeding and hooking driving source, and the needle pitch adjusting driving source is in transmission connection with the feed swinging seat and drives the feed swinging seat to rotate around a fixed swinging fulcrum of the feed swinging seat.

Further, the pitch adjustment drive source is a motor.

Further, the cloth pricking and yarn taking-up driving source and the feed lifting tooth and hook driving source are both motors.

Furthermore, the modularized sewing machine further comprises an auxiliary function module independent of the bur cloth picking and thread lifting module and the feed lifting and thread hooking module, the auxiliary function module comprises an auxiliary driving source independent of the bur cloth picking and thread lifting driving source and the feed lifting and thread lifting driving source, a terminal execution part and an intermediate transmission mechanism, and the auxiliary driving source is connected with the terminal execution part through the intermediate transmission mechanism.

Further, the terminal actuating component comprises a thread cutting component and a foot lifting component, and the intermediate transmission mechanism comprises a thread cutting transmission mechanism connected between the auxiliary driving source and the thread cutting component and a foot lifting mechanism connected between the auxiliary driving source and the foot lifting component.

As described above, the utility model relates to a modularization sewing machine has following beneficial effect:

this application is with thorn cloth take-up functional structure and the lifting teeth work feed collude line functional structure all modularization in the sewing machine, and adopt independent thorn cloth take-up driving source and lifting teeth work feed collude line driving source to drive respectively, make thorn cloth take-up module and lifting teeth work feed collude mutually independent between the line module, mutual noninterference, the driving chain of each functional module has been shortened on the one hand, avoid because of the vibration that the driving chain overlength caused, the noise, difficult processing scheduling problem, on the other hand can adjust the relative motion chronogenesis of each functional module, promote sewing adaptability greatly from this.

Drawings

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

FIG. 2 is a schematic structural diagram of a first embodiment of a modular sewing machine according to the present application.

Fig. 3 is a schematic structural view of the cloth pricking and thread taking-up module in fig. 2.

Fig. 4 is a schematic structural view of the feed cloth-lifting hook module in fig. 2.

Fig. 5 and 6 are schematic structural diagrams of the first transmission unit and the gauge adjusting module in fig. 2 at different viewing angles.

Fig. 7 is a schematic structural view of the second transmission unit in fig. 2.

FIG. 8 is a schematic structural diagram of an auxiliary function module in the first embodiment of the modular sewing machine of the present application.

FIG. 9 is a schematic structural diagram of a second embodiment of a modular sewing machine according to the present application.

Fig. 10 is a schematic structural view of a third embodiment of the modular sewing machine according to the present application.

Fig. 11 is a schematic structural view of a fourth embodiment of the modular sewing machine of the present application.

Fig. 12 is a schematic structural view of the feed cloth hook module of the feed dog in fig. 11.

Fig. 13 and 14 are schematic structural diagrams of the first transmission unit and the gauge adjusting module in fig. 11 at different viewing angles.

Fig. 15 is a schematic structural view of the second transmission unit in fig. 11.

FIG. 16 is a schematic structural diagram of a feed dog driving unit in the fifth embodiment of the modular sewing machine of the present application.

Fig. 17 is a schematic structural view of a second transmission unit in the sixth embodiment of the modular sewing machine according to the present application.

Description of the element reference numerals

10 dental articulator

101 lifting tooth connecting part

102 cloth feeding connecting part

20 feed dog

30-thorn cloth take-up module

31-thorn cloth take-up driving source

32 needle bar

33 machine needle

34 Upper shaft

35 needle bar crank

36-thorn cloth thread-taking-up transmission shaft

40 lifting tooth cloth feeding thread hooking module

41 feed cloth and thread take-off driving source

42 rotating shuttle

43 feed lifting tooth shaft

44 cloth feeding shaft

45 lower shaft

46 dental articulator base

470 first cam for lifting teeth

471 first feed dog link

472 second eccentric cam

473 second lifting tooth connecting rod

474 drive shaft

475 lifting teeth pendulum rod

476 lifting crank

477 third teeth lifting connecting rod

478 fork-shaped crank

479 slide block for lifting teeth

480 cloth feeding eccentric wheel

481 cloth feeding connecting rod

482 cloth feeding swing seat

483 first cloth feeding swing rod

484 second cloth feeding oscillating bar

485 cloth feeding crank

491 middle shaft

492 first gear

493 second gear

494 third Gear

495 first pulley

496 second pulley

497 transmission belt

50 gauge adjustment module

51 needle pitch adjusting drive source

60 auxiliary function module

61 thread cutting component

611 fixed knife

612 moving knife

62 lift presser foot part

621 presser foot

63 thread cutting transmission mechanism

631 thread trimming cam

632 thread trimming roller

633 first trimming crankshaft

634 first trimming crank

635 wire cutting sliding block

636 second trimming crank shaft

637 second trimming crank

638 thread cutting connecting rod

639 moving tool rest

64 lift presser foot mechanism

641 lifting presser foot cam

642 Presser foot lifting roller

643 Presser foot lifting drive shaft

644 crank for lifting presser foot

645 first pull rod

646 right lever

647 second Pull rod

648 left lever

649 lifting pressure foot lifting plate

6410 compression bar guide

6411 compression bar

65 auxiliary driving source

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.

The present application provides a modular sewing machine; for convenience of description, the moving direction of the sewing material in the front sewing of the modular sewing machine is defined as the front direction; defining a horizontal direction orthogonal to the front-rear direction as a left-right direction; a vertical direction orthogonal to the front-rear direction is defined as an up-down direction. Several preferred embodiments of a modular sewing machine are provided as follows.

Embodiment one of the modular sewing machine

As shown in fig. 2, the modular sewing machine comprises a thread frame 10, a feed dog 20 fixedly installed on the thread frame 10, a pick module 30 and a feed hook module 40. The cloth-pricking and thread-taking-up module 30 includes a cloth-pricking and thread-taking-up drive source 31, a needle bar 32 capable of moving up and down in a reciprocating manner, a needle 33 mounted at the lower end of the needle bar 32, a thread-taking-up lever capable of swinging up and down in a reciprocating manner, and a cloth-pricking and thread-taking-up transmission mechanism, wherein the cloth-pricking and thread-taking-up drive source 31 is connected with the needle bar 32 and the thread-taking-up lever through the cloth-pricking and thread-taking-up transmission mechanism to drive the needle bar 32 and the thread-taking-up lever to move. The feed lifting and hooking module 40 comprises a feed lifting and hooking driving source 41, a rotatable rotating shuttle 42, a feed lifting and hooking connecting part 101 arranged at the rear end of the tooth frame 10, a feed connecting part 102 arranged at the front end of the tooth frame 10 and a feed lifting and hooking transmission mechanism, wherein the feed lifting and hooking driving source 41 is connected with the rotating shuttle 42, the feed lifting and hooking connecting part 101 and the feed connecting part 102 through the feed lifting and hooking transmission mechanism, and drives the rotating shuttle 42 to rotate, the tooth frame 10 and the feed dog 20 to reciprocate up and down and the tooth frame 10 and the feed dog 20 to reciprocate back and forth. The pick-up module 30 and the feed-lifting module 40 are two independent functional modules, and the pick-up driving source 31 and the feed-lifting driving source 41 are two independent driving sources.

When the modular sewing machine operates, the burling and take-up driving source 31 and the feed and hook driving source 41 both act, the burling and take-up driving source 31 drives the needle bar 32 to reciprocate up and down through the burling and take-up transmission mechanism, and the needle bar 32 drives the needle 33 to reciprocate up and down to execute the burling action; the upper thread passes through the take-up lever, and the cloth pricking and take-up driving source 31 drives the take-up lever to swing up and down in a reciprocating manner through the cloth pricking and take-up transmission mechanism to execute the take-up action; the feed lifting feed thread hooking driving source 41 drives the rotating shuttle 42 to rotate through the feed lifting feed thread hooking transmission mechanism to carry out thread hooking action; the feed dog driving source 41 drives the tooth frame 10 and the feed dog 20 to reciprocate up and down through the feed dog transmission mechanism to perform feed dog action; the feed lifting feed hook line driving source 41 drives the tooth frame 10 and the feed dog 20 to reciprocate back and forth through a feed lifting feed hook line transmission mechanism to perform feed motion; so that the feed dog 20 performs a combined motion of up-down reciprocating motion and back-and-forth reciprocating motion. Thus, the cloth-stabbing and thread-taking module 30 and the feed-lifting module 40 are matched with each other to complete sewing. Particularly, the stab-fabric take-up module 30 and the feed lifting hook module 40 are functional modules of the modular sewing machine, each functional module is driven by an independent driving source, so that the stab-fabric take-up module 30 and the feed lifting hook module 40 are independent and do not interfere with each other, on one hand, a transmission chain of each functional module is shortened, the problems of vibration, noise and the like caused by the fact that the transmission chain is too long are avoided, the transmission efficiency is high, the processing and assembling precision requirements of a machine shell and each part can be reduced, on the other hand, the relative motion time sequence of each functional module can be adjusted, for example, the morning and evening of the hook time of the rotary shuttle 42 relative to the machine needle 33, the feed lifting tooth time sequence of the feed 20 and the like can be adjusted, generally, the hook time of thin material sewing is earlier, and the hook time of thick material sewing is later, and therefore the sewing adaptability is greatly improved.

Further, the cloth-pricking and thread-taking-up driving source 31 is a motor, preferably a servo motor. As shown in fig. 3, the pick-up transmission mechanism includes an upper shaft 34 driven to rotate by the pick-up driving source 31, a needle bar crank 35 fixed to the upper shaft 34, a pick-up transmission shaft 36, a link mechanism, and a slider-crank mechanism, the upper shaft 34 extends left and right, the right end of the upper shaft 34 is connected to the motor shaft of the pick-up driving source 31 through a coupling, the pick-up transmission shaft 36 has a first shaft portion eccentric to the upper shaft 34 and a second shaft portion eccentric to the first shaft portion, the second shaft portion is also eccentric to the upper shaft 34, the first shaft portion is fixed to the needle bar crank 35 and connected to the take-up lever through the link mechanism, and the second shaft portion is connected to the needle bar 32 through the slider-crank mechanism. The needle bar picking drive source 31 drives the upper shaft 34 to rotate, the upper shaft 34 drives the needle bar crank 35 and the needle bar picking transmission shaft 36 to rotate together around the central axis of the upper shaft 34, the needle bar picking transmission shaft 36 drives the thread picking rod to swing up and down in a reciprocating manner through the link mechanism to execute a thread picking action, the needle bar 32 is driven by the needle bar picking transmission shaft 36 to move up and down in a reciprocating manner through the crank-slider mechanism, and the needle bar 32 drives the machine needle 33 to move up and down in a reciprocating manner to execute a needle bar puncturing action. The structure of the slider-crank mechanism can be seen in the sewing machine disclosed in the chinese utility model patent application No. 202010307710.4.

Further, the feed-lifting wire-feeding drive source 41 is a motor, preferably a servo motor. As shown in fig. 4, the feed lifting thread transmission mechanism comprises a feed lifting shaft 43, a feed feeding shaft 44, a lower shaft 45, a first transmission unit connected between the feed lifting shaft 43 and the feed feeding shaft 44, a second transmission unit connected between the feed lifting shaft 43 and the lower shaft 45, a feed lifting transmission unit connected between the feed lifting shaft 43 and a feed lifting connection part 101 of the feed lifting frame 10, and a feed lifting frame seat 46, wherein the feed lifting shaft 43, the feed feeding shaft 44 and the lower shaft 45 extend leftwards and rightwards and are all rotatably supported in the sewing machine shell, the right end of the feed lifting shaft 43 is connected with the motor shaft of the feed lifting feed hook line driving source 41 through a coupling, so that the feed lifting shaft 43 is directly driven to rotate by the feed lifting feed hook line driving source 41, the second transmission unit enables the rotating speed ratio of the lower shaft 45 to the feed lifting shaft 43 to be 2:1, the tooth rack seat 46 is fixed at the left end of the feed conveying shaft 44 and hinged with the feed conveying connecting part 102 of the tooth rack 10, and the rotating shuttle 42 is fixed at the left end of the lower shaft 45. The feed lifting tooth wire feeding and hooking driving source 41 drives the feed lifting tooth shaft 43 to rotate, and the feed lifting tooth shaft 43 drives the tooth frame 10 and the feed lifting tooth 20 to reciprocate up and down through the feed lifting tooth transmission unit to execute feed lifting tooth action; meanwhile, the feed lifting shaft 43 drives the feed feeding shaft 44 to swing back and forth through the first transmission unit, and the feed feeding shaft 44 drives the tooth frame 10 and the feed feeding tooth 20 to reciprocate back and forth through the tooth frame seat 46 to perform a feed motion; meanwhile, the feed lifting shaft 43 drives the lower shaft 45 to rotate through the second transmission unit, and the lower shaft 45 drives the rotating shuttle 42 to rotate together to perform a thread hooking action.

The preferable structure of the feed lifting transmission unit is as follows: as shown in fig. 4 to 6, the feed dog transmission unit includes a first feed dog eccentric 470 fixed to a left end of the feed dog shaft 43, the first feed dog eccentric 470 having a first feed dog eccentric shaft portion eccentric to the feed dog shaft 43, and a first feed dog link 471 having one end rotatably mounted to the first feed dog eccentric shaft portion and the other end hinged to the feed dog connecting portion 101 of the dental articulator 10.

The preferred structure of the first transmission unit is: as shown in fig. 4 to 6, the first transmission unit includes a cloth feeding eccentric wheel 480 fixed on the feed lifting shaft 43, a cloth feeding link 481, a cloth feeding swing seat 482 having a fixed swing fulcrum, a first cloth feeding swing rod 483, a second cloth feeding swing rod 484, and a cloth feeding crank 485 fixed on the right end of the cloth feeding shaft 44, the rear end of the cloth feeding link 481 is rotatably mounted on the eccentric portion of the cloth feeding eccentric wheel 480, the front end of the cloth feeding link 481, one end of the first cloth feeding swing rod 483, and one end of the second cloth feeding swing rod 484 are coaxially hinged, the other end of the first cloth feeding swing rod 483 is hinged with the cloth feeding swing seat 482, and the other end of the second cloth feeding swing rod 484 is hinged with the cloth feeding crank 485.

The preferred structure of the second transmission unit is: as shown in fig. 4 and 7, the second transmission unit takes the form of a gear transmission, and includes an intermediate shaft 491 rotatably supported in the sewing machine housing and extending left and right, a first gear 492 fixed to the feed shaft 43, a second gear 493 fixed to the intermediate shaft 491, and a third gear 494 fixed to the right end of the lower shaft 45, the first gear 492 and the second gear 493 being engaged, and the second gear 493 being engaged with the third gear 494.

Further, in the first transmission unit, the angle of the cloth feeding swing seat 482 determines the transmission efficiency of the first transmission unit, that is, the swing amplitude of the feed lifting shaft 44 driven by the feed lifting shaft 43 through the first transmission unit to swing back and forth, or the motion amplitude of the feed lifting feed hook driving source 41 driving the tooth frame 10 and the feed dog 20 to reciprocate back and forth through the feed lifting feed hook transmission mechanism, thereby determining the needle pitch of the modular sewing machine. Based on this, as shown in fig. 2, 5 and 6, the modular sewing machine further comprises a stitch length adjusting module 50 independent of the pick-up module 30 and the feed pick module 40, the stitch length adjusting module 50 comprises a stitch length adjusting driving source 51 independent of the pick-up driving source 31 and the feed pick driving source 41, the stitch length adjusting driving source 51 is a motor, preferably a servo motor, and a motor shaft of the stitch length adjusting driving source 51 is fixedly connected with the feed swing seat 482, so that the stitch length adjusting driving source 51 can directly drive the feed swing seat 482 to rotate around its fixed swing fulcrum, thereby changing or maintaining the angle of the feed swing seat 482, and accordingly changing or maintaining the stitch length of the modular sewing machine. The fixed swing fulcrum of the cloth feeding swing base 482 is located on the center axis of the motor shaft of the needle pitch adjusting drive source 51, and the motor shaft of the needle pitch adjusting drive source 51 extends left and right.

Further, as shown in fig. 8, the modular sewing machine further includes an auxiliary function module 60, the auxiliary function module 60 is independent of the pick-up module 30 and the feed-lifting module 40, that is, the auxiliary function module 60 is independent of the pick-up module 30 and the feed-lifting module 40, and the feed-lifting module 40 is not interfered with each other, the function of the auxiliary function module 60 is not dependent on the pick-up module 30 and the feed-lifting module 40, and the auxiliary function module 60 can implement various predetermined sewing execution actions, such as presser foot lifting, thread cutting, presser foot pressure adjustment, thread loosening, and the like. Based on this, the auxiliary function module 60 includes an auxiliary drive source 65 independent of the pick-up drive source 31 and the feed-hook drive source 41, an end actuator, and an intermediate transmission mechanism, and the auxiliary drive source 65 is connected to the end actuator through the intermediate transmission mechanism. In this embodiment, the auxiliary function module 60 is used for performing a presser foot lifting action and a thread trimming action; based on this, as shown in fig. 8, the terminal actuating member includes a thread cutting member 61 and a foot lifting member 62, and the intermediate transmission mechanism includes a thread cutting transmission mechanism 63 connected between an auxiliary driving source 65 and the thread cutting member 61, and a foot lifting mechanism 64 connected between the auxiliary driving source 65 and the foot lifting member 62. Preferably, the assist drive source 65 is a motor, preferably a servo motor, and the motor constituting the assist drive source 65 is a biaxial motor.

Further, as shown in fig. 8, the thread cutting member 61 includes a fixed cutter 611 fixed in position and a rotatable movable cutter 612, the thread cutting transmission mechanism 63 includes a thread cutting cam 631 fixed on a motor shaft at the left side of the auxiliary driving source 65, a thread cutting roller 632, a first thread cutting crank shaft 633 rotatably supported in the sewing machine housing and extending left and right, a first thread cutting crank 634 fixed at the left end of the first thread cutting crank shaft 633, a thread cutting slider 635, a second thread cutting crank shaft 636 rotatably supported in the sewing machine housing and extending left and right, a second thread cutting crank 637 fixed at the left end of the second thread cutting crank shaft 636, a thread cutting connecting rod 638 and a movable cutter holder 639, a first thread cutting driving arm is integrally extended from the right end of the first thread cutting crank shaft 633, the thread cutting roller 632 is rotatably mounted on the first thread cutting driving arm 631 and is in contact fit with the thread cutting cam, a second thread cutting driving arm is integrally extended from the right end of the second thread cutting crank shaft 636, the trimming slide block 635 is hinged to the first trimming crank 634 and is in sliding fit with a trimming slide groove extending left and right in the second trimming drive arm, two ends of the trimming connecting rod 638 are hinged to the second trimming crank 637 and the movable knife holder 639, respectively, and the movable knife 612 is fixed to the movable knife holder 639. In addition, the contour surface of the trimming cam 631 in contact with and engaged with the trimming roller 632 includes a first reducing driving section and a first avoiding section, and the first avoiding section may be an equal diameter surface.

Further, as shown in fig. 8, the presser foot raising member 62 includes a presser foot 621 capable of moving up and down, the presser foot raising mechanism 64 includes a presser foot raising cam 641 fixed to a right motor shaft of the auxiliary drive source 65, a presser foot raising roller 642, a presser foot raising drive shaft 643 rotatably supported in the sewing machine housing and extending left and right, a presser foot raising crank 644 fixed to a right end 643 of the presser foot raising drive shaft, a first pull rod 645 extending up and down, a right lever 646 having a first fixed swing fulcrum, a second pull rod 647 extending left and right, a left lever 648 having a second fixed swing fulcrum, a presser foot raising lift plate 649, a presser bar guide 6410, and a presser bar 6411 extending up and down, a presser foot raising drive arm is integrally extended from a left end of the presser foot raising drive shaft 643, the presser foot raising roller 642 is rotatably mounted to the presser foot raising drive arm 641 and is in contact engagement with the presser foot raising cam, both ends of the first pull rod 645 are respectively hinged to the presser foot raising crank 644 and the right lever 646, the two ends of the second pull rod 647 are respectively hinged with the right lever 646 and the left lever 648, the left lever 648 is hinged with the upper end of the presser foot lifting plate 649, the presser foot lifting plate 649 is provided with a lifting hook part, the pressure lever guide 6410 is provided with a connecting projection part clamped with the lifting hook part, the pressure lever guide 6410 is fixed at the upper end of the pressure lever 6411, and the presser foot 621 is arranged at the lower end of the pressure lever 6411. In addition, the profile surface of the presser foot lifting cam 641, which is in contact fit with the presser foot lifting roller 642, includes a second reducing driving section and a second avoiding section, and the second avoiding section may be a groove.

When the auxiliary function module 60 executes the thread trimming action, the auxiliary driving source 65 acts to drive the thread trimming cam 631 and the presser foot lifting cam 641 to rotate together; the first reducing driving section on the trimming cam 631 is in contact fit with the trimming roller 632 to push the first trimming crank shaft 633 to swing, and then push the second trimming crank shaft 636 to swing through the first trimming crank 634 and the trimming slider 635, and then drive the movable knife holder 639 and the movable knife 612 to rotate through the second trimming crank 637 and the trimming connecting rod 638, so that the movable knife 612 rotates in a direction close to the fixed knife 611, and the movable knife 612 engages with the fixed knife 611 to cut a suture, thereby performing a trimming operation; in this process, the second avoiding section on the presser foot lifting cam 641 is matched with the presser foot lifting roller 642, so that the presser foot lifting driving shaft 643 is not pushed to swing, and the presser foot 621 is not lifted upwards, thereby avoiding interference on the presser foot lifting mechanism 64.

When the auxiliary function module 60 executes the presser foot lifting action, the auxiliary driving source 65 acts to drive the trimming cam 631 and the presser foot lifting cam 641 to rotate together; the second reducing driving section on the presser foot lifting cam 641 is in contact fit with the presser foot lifting roller 642 to push the presser foot lifting driving shaft 643 to swing, so that the right lever 646 is driven to rotate around a first fixed swing fulcrum through the presser foot lifting crank 644 and the first pull rod 645, the left lever 648 is driven to rotate around a second fixed swing fulcrum through the right lever 646 and the second pull rod 647, the presser foot lifting plate 649 is pulled upwards, the press rod guide frame 6410, the press rod 6411 and the presser foot 621 are driven to move upwards, and therefore the presser foot lifting action is executed; in this process, the first avoiding section of the trimming cam 631 is matched with the trimming roller 632, so that the first trimming crankshaft 633 is not pushed to swing, and therefore the movable knife 612 does not rotate, and interference on the trimming transmission mechanism 63 is avoided.

Embodiment two of the modularized sewing machine

The second embodiment of the modular sewing machine is different from the first embodiment of the modular sewing machine only in that: the feed-dog wire drive mechanism is connected to the feed-dog wire drive source 41 in a different manner. Specifically, in the second embodiment of the modular sewing machine, as shown in fig. 9, the motor shaft of the feed lifting-dog thread driving source 41 is connected to the right end of the lower shaft 45 through a coupling, so that the lower shaft 45 is directly driven to rotate by the feed lifting-dog thread driving source 41, the lower shaft 45 drives the feed lifting-dog shaft 43 to rotate through the second transmission unit, and the feed lifting-dog shaft 43 drives the feed shaft 44 to rotate through the first transmission unit.

Modular sewing machine embodiment three

The third embodiment of the modular sewing machine is different from the first embodiment of the modular sewing machine only in that: the feed-dog wire drive mechanism is connected to the feed-dog wire drive source 41 in a different manner. Specifically, in the third embodiment of the modular sewing machine, as shown in fig. 10, the motor shaft of the feed lifting feed and hook driving source 41 is connected to the right end of the intermediate shaft 491 through a coupling, so that the intermediate shaft 491 is directly driven to rotate by the feed lifting feed and hook driving source 41, the intermediate shaft 491 drives the feed lifting shaft 43 and the lower shaft 45 to rotate through the second transmission unit, and the feed lifting shaft 43 drives the feed conveying shaft 44 to rotate through the first transmission unit.

Embodiment four of the Modular Sewing machine

The fourth embodiment of the modular sewing machine differs from the first embodiment of the modular sewing machine only in that: the structures of the feed lifting tooth wire-feeding and hooking transmission mechanisms are different, in particular to the structures of a second transmission unit and a feed lifting tooth transmission unit in the feed lifting tooth wire-feeding and hooking transmission mechanisms are different.

Specifically, as shown in fig. 11 to 14, the feed dog transmission unit includes a second feed dog eccentric 472 fixed to a left end of the feed dog shaft 43, a second feed dog link 473, a transmission shaft 474 parallel to the feed dog shaft 43 and disposed on a left side of the feed dog shaft 43, a feed dog swing link 475 fixed to a right end of the transmission shaft 474, a feed dog crank 476 fixed to a left end of the transmission shaft 474, and a third feed dog link 477, the second feed dog eccentric 472 having a second feed dog eccentric shaft portion eccentric to the feed dog shaft 43, the second feed dog link 473 having one end rotatably mounted to the second feed dog eccentric shaft portion and the other end hinged to the feed dog swing link 475, and the third feed dog link 477 having both ends hinged to the feed dog crank 476 and the feed dog coupling portion 101 of the dental articulator 10, respectively.

As shown in fig. 12 and 15, the intermediate shaft 491 in the first modular sewing machine embodiment is eliminated from the second transmission unit, and in the fourth modular sewing machine embodiment, the second transmission unit comprises a first gear 492 fixed to the feed lifting shaft 43 and a third gear 494 fixed to the right end of the lower shaft 45, and the first gear 492 and the third gear 494 are meshed with each other.

Fifth embodiment of a modular sewing machine

The fifth embodiment of the modular sewing machine is different from the fourth embodiment of the modular sewing machine only in that: the feed-dog transmission units are of different structures. Specifically, as shown in fig. 16, the feed dog driving unit includes a second feed dog eccentric 472 fixed to a left end of the feed dog shaft 43, a second feed dog connecting rod 473, a driving shaft 474 parallel to the feed dog shaft 43 and distributed on a left side of the feed dog shaft 43, a feed dog swing link 475 fixed to a right end of the driving shaft 474, a feed lifting fork-shaped crank 478 and a feed lifting sliding block 479 which are fixed at the left end of the transmission shaft 474, wherein the second feed lifting eccentric wheel 472 is provided with a second feed lifting eccentric shaft part which is eccentric to the feed lifting shaft 43, one end of a second feed lifting connecting rod 473 is rotatably arranged at the second feed lifting eccentric shaft part, the other end of the second feed lifting connecting rod 473 is hinged with a feed lifting swing rod 475, a feed lifting sliding groove which is in sliding fit with the feed lifting sliding block 479 is arranged in the feed lifting fork-shaped crank 478, the feed lifting sliding block 479 is hinged with the feed lifting connecting part 101 of the tooth frame 10, the reciprocating swing of the feed lifting shaft 43 realizes the reciprocating swing of the feed lifting fork-shaped crank 478 up and down, and the feed lifting fork-shaped crank 10 and the feed-feeding tooth 20 are driven to reciprocate up and down by the feed lifting sliding block 479.

Modular sewing machine embodiment six

The sixth embodiment of the modular sewing machine differs from the first embodiment of the modular sewing machine only in that: the structures of the feed lifting tooth wire-feeding and hooking transmission mechanisms are different, in particular to the structures of a second transmission unit and a feed lifting tooth transmission unit in the feed lifting tooth wire-feeding and hooking transmission mechanisms are different.

Specifically, the second drive unit eliminates the intermediate shaft 491 of the first embodiment of the modular sewing machine and adopts a belt wheel drive mode. As shown in fig. 17, in the sixth embodiment of the modular sewing machine, the second transmission unit includes a first pulley 495 fixed to the feed lifting shaft 43, a second pulley 496 fixed to the right end of the lower shaft 45, and a transmission belt 497 connecting the first pulley 495 and the second pulley 496, and the right end of the feed lifting shaft 43 is connected to the motor shaft of the feed lifting drive source 41 through a coupling, so that the feed lifting shaft 43 is directly driven to rotate by the feed lifting drive source 41.

Embodiment seven of the Modular Sewing machine

The seventh embodiment of the modular sewing machine differs from the sixth embodiment of the modular sewing machine only in that: the feed lifting device 41 has a different connection structure from the second transmission unit. Specifically, in the seventh embodiment of the modular sewing machine, the motor shaft of the feed lifting device drive source 41 is fixedly connected to the right end of the lower shaft 45 through a coupling, and the lower shaft 45 is directly driven to rotate by the feed lifting device drive source 41.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (12)

1. A modular sewing machine comprising a feed dog (20) mounted on a feed dog (10) and a feed dog (10), characterized in that: the modular sewing machine further comprises:

a cloth-pricking and thread-taking-up module (30): the needle bar comprises a cloth pricking and thread taking-up driving source (31), a needle bar (32) capable of moving up and down in a reciprocating manner, a machine needle (33) arranged at the lower end of the needle bar (32), a thread taking-up rod capable of swinging up and down in a reciprocating manner and a cloth pricking and thread taking-up transmission mechanism, wherein the cloth pricking and thread taking-up driving source (31) is connected with the needle bar (32) and the thread taking-up rod through the cloth pricking and thread taking-up transmission mechanism;

a feed lifting and thread hooking module (40): the feed lifting mechanism comprises a feed lifting and hooking driving source (41), a rotatable rotating shuttle (42), a feed lifting connecting part (101) arranged at one end of a dental articulator (10), a feed conveying connecting part (102) arranged at the other end of the dental articulator (10) and a feed lifting and hooking transmission mechanism, wherein the feed lifting and hooking driving source (41) is connected with the rotating shuttle (42), the feed lifting connecting part (101) and the feed conveying connecting part (102) through the feed lifting and hooking transmission mechanism;

the cloth pricking and picking module (30) and the tooth lifting and cloth feeding hook module (40) are two mutually independent functional modules, and the cloth pricking and picking drive source (31) and the tooth lifting and cloth feeding hook drive source (41) are two mutually independent drive sources.

2. The modular sewing machine of claim 1, wherein: the cloth pricking and thread picking transmission mechanism comprises an upper shaft (34) driven to rotate by a cloth pricking and thread picking driving source (31), a needle rod crank (35) fixed on the upper shaft (34), a cloth pricking and thread picking transmission shaft (36), a connecting rod mechanism and a crank slider mechanism, wherein the cloth pricking and thread picking transmission shaft (36) is provided with a first shaft part eccentric to the upper shaft (34) and a second shaft part eccentric to the first shaft part, the first shaft part is fixed on the needle rod crank (35) and is connected with a thread picking rod through the connecting rod mechanism, and the second shaft part is connected with the needle rod (32) through the crank slider mechanism.

3. The modular sewing machine of claim 1, wherein: the feed lifting tooth wire feeding and hooking transmission mechanism comprises a feed lifting tooth shaft (43), a feed feeding shaft (44) and a lower shaft (45) which are rotatably supported in a sewing machine shell, a first transmission unit connected between the feed lifting tooth shaft (43) and the feed feeding shaft (44), a second transmission unit connected between the feed lifting tooth shaft (43) and the lower shaft (45), a feed lifting tooth transmission unit connected between the feed lifting tooth shaft (43) and a feed lifting tooth connecting part (101) of a tooth rack (10), and a tooth rack seat (46) fixed on the feed feeding shaft (44), wherein the feed lifting tooth shaft (43) or the lower shaft (45) is in transmission connection with the feed lifting tooth wire feeding and hooking driving source (41) and is driven to rotate by the feed lifting tooth wire feeding and hooking driving source (41), the second transmission unit enables the rotating speed ratio of the lower shaft (45) to the feed lifting tooth shaft (43) to be 2:1, and the tooth rack seat (46) is hinged with the feed feeding connecting part (102) of the tooth rack (10), the rotating shuttle (42) is fixed at the end part of the lower shaft (45).

4. The modular sewing machine of claim 3, wherein: the feed lifting gear transmission unit comprises a first feed lifting gear eccentric wheel (470) fixed on a feed lifting gear shaft (43) and a first feed lifting gear connecting rod (471), wherein the first feed lifting gear eccentric wheel (470) is provided with a first feed lifting gear eccentric shaft part eccentric to the feed lifting gear shaft (43), one end of the feed lifting gear connecting rod is rotatably arranged on the first feed lifting gear eccentric shaft part, and the other end of the feed lifting gear connecting rod is hinged with a feed lifting gear connecting part (101) of the feed lifting gear frame (10).

5. The modular sewing machine of claim 3, wherein: the tooth lifting transmission unit comprises a second tooth lifting eccentric wheel (472) fixed on a tooth lifting shaft (43), a second tooth lifting connecting rod (473), a transmission shaft (474) parallel to the tooth lifting shaft (43), a tooth lifting swing rod (475) fixed at one end of the transmission shaft (474), a tooth lifting crank (476) fixed at the other end of the transmission shaft (474), and a third tooth lifting connecting rod (477), wherein the second tooth lifting eccentric wheel (472) is provided with a second tooth lifting eccentric shaft part eccentric to the tooth lifting shaft (43), one end of the second tooth lifting connecting rod (473) is rotatably arranged on the second tooth lifting eccentric shaft part, the other end of the second tooth lifting connecting rod is hinged with the tooth lifting swing rod (475), and two ends of the third tooth lifting connecting rod (477) are respectively hinged with the tooth lifting crank (476) and a tooth lifting connecting part (101) of a tooth rack (10).

6. The modular sewing machine of claim 3, wherein: the tooth lifting transmission unit comprises a second tooth lifting eccentric wheel (472) fixed on a tooth lifting shaft (43), a second tooth lifting connecting rod (473), a transmission shaft (474) parallel to the tooth lifting shaft (43), a tooth lifting swing rod (475) fixed at one end of the transmission shaft (474), a tooth lifting fork-shaped crank (478) fixed at the other end of the transmission shaft (474), and a tooth lifting sliding block (479), wherein the second tooth lifting eccentric wheel (472) is provided with a second tooth lifting eccentric shaft part eccentric to the tooth lifting shaft (43), one end of the second tooth lifting connecting rod (473) is rotatably arranged on the second tooth lifting eccentric shaft part, the other end of the second tooth lifting eccentric shaft part is hinged with the tooth lifting swing rod (475), a tooth lifting sliding groove in sliding fit with the tooth lifting sliding block (479) is formed in the tooth lifting fork-shaped crank (478), and the tooth lifting sliding block (479) is hinged with a tooth lifting connecting part (101) of a tooth lifting rack (10).

7. The modular sewing machine of claim 3, wherein: the cloth feeding mechanism is characterized in that the first transmission unit comprises a cloth feeding eccentric wheel (480) fixed on a feed lifting shaft (43), a cloth feeding connecting rod (481), a cloth feeding swinging seat (482) with a fixed swinging fulcrum, a first cloth feeding swing rod (483), a second cloth feeding swing rod (484) and a cloth feeding crank (485) fixed on a cloth feeding shaft (44), one end of the cloth feeding connecting rod (481) is rotatably installed on the cloth feeding eccentric wheel (480), the other end of the cloth feeding connecting rod (481), one end of the first cloth feeding swing rod (483) and one end of the second cloth feeding swing rod (484) are coaxially hinged, the other end of the first cloth feeding swing rod (483) is hinged with the cloth feeding swinging seat (482), and the other end of the second cloth feeding swing rod (484) is hinged with the cloth feeding crank (485).

8. The modular sewing machine of claim 7, wherein: the needle pitch adjusting device is characterized by further comprising a needle pitch adjusting module (50) independent of the cloth pricking and picking module (30) and the tooth lifting and cloth feeding hook module (40), wherein the needle pitch adjusting module (50) comprises a needle pitch adjusting driving source (51) independent of the cloth pricking and picking driving source (31) and the tooth lifting and cloth feeding hook driving source (41), and the needle pitch adjusting driving source (51) is in transmission connection with the cloth feeding swing seat (482) and drives the cloth feeding swing seat (482) to rotate around a fixed swing fulcrum of the cloth feeding swing seat.

9. The modular sewing machine of claim 8, wherein: the needle pitch adjusting drive source (51) is a motor.

10. The modular sewing machine of claim 1, wherein: the cloth pricking and yarn taking-up driving source (31) and the feed lifting tooth and hook driving source (41) are both motors.

11. Modular sewing machine according to any one of claims 1-10, characterized in that: the auxiliary function module (60) is independent of the cloth pricking and picking module (30) and the tooth lifting and feeding hook module (40), the auxiliary function module (60) comprises an auxiliary driving source (65) independent of the cloth pricking and picking driving source (31) and the tooth lifting and feeding hook driving source (41), a terminal execution component and an intermediate transmission mechanism, and the auxiliary driving source (65) is connected with the terminal execution component through the intermediate transmission mechanism.

12. The modular sewing machine of claim 11, wherein: the terminal actuating component comprises a thread cutting component (61) and a presser foot lifting component (62), and the intermediate transmission mechanism comprises a thread cutting transmission mechanism (63) connected between an auxiliary driving source (65) and the thread cutting component (61) and a presser foot lifting mechanism (64) connected between the auxiliary driving source (65) and the presser foot lifting component (62).

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