CN214422881U

CN214422881U - Modular embroidery machine

Info

Publication number: CN214422881U
Application number: CN202023138213.0U
Authority: CN
Inventors: 王海江; 田桂郁
Original assignee: Zhejiang Xinsheng Technology Co Ltd
Current assignee: Zhejiang Xinsheng Technology Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-10-19
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a modular embroidery machine belongs to embroidery machine technical field, drive the motor including horizontal main shaft and the owner that is used for driving the main shaft, still include a plurality of machine head modules that set up along horizontal interval, the outside of each machine head module is located to the main shaft, and each machine head module all is equipped with horizontal needle bar drive shaft, all is equipped with between the needle bar drive shaft of each machine head module and the main shaft and divides and drive mechanism. Because the main shaft is arranged outside the machine head module, the strength of the main shaft can be improved by increasing the outer diameter of the main shaft, the structural requirement of the embroidery machine is better met, and the change of the outer diameter of the main shaft can not influence the overall dimension of the machine head and the internal installation space of the machine head. When the main shaft needs to be replaced, only the related components of the driving transmission mechanism need to be detached from the main shaft, and the components on the head module do not need to be detached, so that the number of the components needing to be detached is greatly reduced, the maintenance difficulty is reduced, and the maintenance efficiency is improved.

Description

Modular embroidery machine

Technical Field

The utility model relates to an embroidery machine technical field especially relates to a modular embroidery machine.

Background

With the advancement of science and technology, computerized embroidery machines have become the main mechanical equipment in the embroidery industry, and the machine head of the embroidery machine is an important structure of the embroidery machine. In the existing embroidery machine structure, a main shaft penetrates through all machine heads to provide power for needle bar driving and presser foot driving on each machine head. With the market demand rising, the number of machine heads on the embroidery machine is increasing, and therefore, the requirement on the rigidity of the main shaft is higher and higher. In the structure of the existing embroidery machine, the size of a main shaft is limited due to the arrangement of the main shaft penetrating through a machine head, and the strength of the main shaft cannot well meet the driving requirement of the embroidery machine. If the strength of the main shaft is improved by increasing the outer diameter of the main shaft, in order to reserve a sufficient installation space, the overall dimension of the machine head needs to be correspondingly increased, the body shape of the embroidery machine is increased accordingly, and the control of the production cost is not facilitated. In addition, when the main shaft is deformed or broken and needs to be replaced, the needle bar driving mechanism and the presser foot driving mechanism on all the machine heads need to be detached from the main shaft, and the maintenance is complex.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming and the insufficiency that exist among the above-mentioned prior art, the utility model provides a modular embroidery machine locates the outside of aircraft nose with the main shaft, also can reduce the change degree of difficulty of main shaft when improving main shaft intensity.

In order to realize the technical purpose, the utility model provides a pair of modular embroidery machine, including horizontal main shaft and the main motor that drives that is used for driving the main shaft, still include a plurality of machine head modules that set up along horizontal interval, each machine head module's outside is located to the main shaft, and each machine head module all is equipped with horizontal needle bar drive shaft, all is equipped with between the needle bar drive shaft of each machine head module and the main shaft and divides and drive mechanism.

Preferably, the driving mechanism comprises a first main belt wheel, a first auxiliary belt wheel and a first transmission belt, the first main belt wheel is sleeved on the main shaft, the first auxiliary belt wheel is sleeved on the needle rod driving shaft, and the first transmission belt is sleeved on the first main belt wheel and the first auxiliary belt wheel.

Preferably, the drive-dividing transmission mechanism further includes a tensioning structure for tensioning the first drive belt.

Preferably, the tensioning structure comprises a fixed support and a tensioning piece, wherein the tensioning piece is rotatably arranged on the support, and the tensioning piece is in interference fit with the first transmission belt.

Preferably, the support is provided with a through hole with the inner diameter larger than the outer diameter of the main shaft, and the main shaft penetrates through the support; and/or the tensioning piece comprises a tensioning bearing and a tensioning wheel sleeved outside the tensioning bearing.

Preferably, the machine head module comprises at least two machine heads which are arranged side by side along the transverse direction, each machine head is provided with a needle rod driving shaft, each sub-driving transmission mechanism is matched with one of the needle rod driving shafts of the corresponding machine head module, and a transmission matching structure is arranged between every two adjacent needle rod driving shafts.

Preferably, the transmission matching structure comprises a transmission lug and a transmission groove which are matched with each other, the transmission lug and the transmission groove are respectively arranged at the end parts of the two adjacent needle rod driving shafts, and the transmission lug is clamped in the transmission groove.

Preferably, the modular embroidery machine further comprises a lower shaft and a transmission case, the lower shaft is transversely arranged at the bottom of the machine head module, an inter-shaft transmission structure between the main shaft and the lower shaft is arranged in the transmission case, and the main shaft drives the lower shaft to rotate through the inter-shaft transmission structure.

Preferably, the inter-shaft transmission structure comprises a second main belt wheel, a second auxiliary belt wheel and a second transmission belt, the second main belt wheel is sleeved on the main shaft, the second auxiliary belt wheel is sleeved on the lower shaft, and the second transmission belt is sleeved on the second main belt wheel and the second auxiliary belt wheel.

Preferably, the transmission case is provided with two transmission cases which are respectively positioned at the two transverse ends of the main shaft and the lower shaft.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. the utility model provides a modular embroidery machine, main shaft are located the outside of each head module, set up between the needle bar drive shaft of main shaft and head module and divide and drive mechanism, and when the main motor drive main shaft that drives, the main shaft drives the needle bar drive shaft rotation of each head module of drive mechanism drive through dividing, realizes power transmission, makes the aircraft nose can normally work. Because the main shaft is arranged outside the machine head module, the strength of the main shaft can be improved by increasing the outer diameter of the main shaft, the structural requirement of the embroidery machine is better met, and the change of the outer diameter of the main shaft can not influence the overall dimension of the machine head and the internal installation space of the machine head. When the main shaft needs to be replaced, only the related components of the driving transmission mechanism need to be detached from the main shaft, and the components on the head module do not need to be detached, so that the number of the components needing to be detached is greatly reduced, the maintenance difficulty is reduced, and the maintenance efficiency is improved.

2. The sub-drive transmission mechanism adopts a belt wheel transmission structure, has simple structure, can well meet the transmission requirement between the main shaft and the needle rod driving shaft, and is convenient to install.

3. The tensioning member rotatably arranged on the support is abutted against the first transmission belt of the sub-drive transmission mechanism, and the first transmission belt is tensioned through the tensioning member, so that the transmission effectiveness between the main shaft and the needle rod driving shaft of each machine head module is improved. The sub-driving transmission mechanisms corresponding to the machine head modules can be independently adjusted, so that the requirement on the installation precision of the main shaft is conveniently reduced.

4. Set up the transmission cooperation structure of transmission lug and transmission recess block between two needle bar drive shafts on two adjacent aircraft noses in same aircraft nose module, the main shaft drives certain needle bar drive shaft in the same aircraft nose module through driving drive mechanism separately, and this needle bar drive shaft drives other needle bar drive shafts synchronous rotations with the group aircraft nose module through transmission cooperation structure, rationally sets up the cooperation structure between two adjacent needle bar drive shafts, is convenient for rationally simplify and divide drive mechanism.

5. The main shaft drives the lower shaft to rotate through an inter-shaft transmission structure in the transmission box, the lower shaft is used for driving related components in the shuttle box to work, the inter-shaft transmission structure preferably adopts a belt wheel transmission structure, the structure is simple, and the transmission requirement between the main shaft and the lower shaft can be well met.

Drawings

Fig. 1 is a schematic view of a modular embroidery machine according to an embodiment of the present invention;

fig. 2 is a schematic view of a central drive transmission mechanism in a modular embroidery machine according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating a transmission engagement structure between two adjacent needle bar driving shafts in a modular embroidery machine according to an embodiment of the present invention;

fig. 4 is a perspective view illustrating a head of a modular embroidery machine according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a connecting rod structure and a needle bar driving shaft in a modular embroidery machine according to an embodiment of the present invention;

FIG. 6 is an exploded view of a portion of the components of FIG. 5;

fig. 7 is an exploded view of a part of the link structure and the guide bar and the needle bar driver of the modular embroidery machine according to the embodiment of the present invention;

fig. 8 is another perspective view of a head in a modular embroidery machine according to an embodiment of the present invention;

fig. 9 is a schematic view of a presser foot mechanism, a presser foot transmission mechanism and a presser foot adjustment mechanism of a head in a modular embroidery machine according to an embodiment of the present invention;

fig. 10 is an exploded view of a portion of the components of fig. 9.

In the figure, 100-machine shell, 210-needle bar driving shaft, 211-transmission lug, 212-transmission groove, 220-needle bar cam, 221-limit convex edge, 230-limit plate, 240-presser foot driving wheel, 241-cam groove, 310-guide rod, 320-needle bar driver, 400-connecting rod structure, 410-big connecting rod, 420-needle bar three-eye connecting rod, 430-needle bar small connecting rod, 440-middle shaft, 500-presser foot mechanism, 510-presser foot strip, 520-presser foot, 530-presser foot lifting rod, 540-presser foot driver, 600-presser foot transmission mechanism, 610-presser foot driving rod, 620-presser foot transmission rod, 630-presser foot three-eye connecting rod, 640-presser foot small connecting rod, 650-linkage piece and 700-presser foot adjusting mechanism, 710-adjusting drive shaft, 720-adjusting main belt wheel, 730-adjusting auxiliary belt wheel, 740-adjusting drive belt, 750-presser foot shaft, 760-adjusting cam, 770-pipe sleeve, 810-main shaft, 820-machine head module, 830-lower shaft, 840-drive box, 851-second main belt wheel, 900-sub drive mechanism, 910-first main belt wheel, 920-first auxiliary belt wheel, 930-first drive belt, 940-support, 941-through hole, 950-tension member.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

Example one

As shown in fig. 1 and 2, the present invention provides a modular embroidery machine, which comprises a horizontal main shaft 810, a main driving motor for driving the main shaft 810, and a plurality of head modules 820 arranged along a horizontal interval, wherein the main shaft 810 is arranged outside each head module 820, each head module 820 is provided with a horizontal needle bar driving shaft 210, and a separate driving transmission mechanism 900 is arranged between the needle bar driving shaft 210 of each head module 820 and the main shaft 810.

Because the main shaft is arranged outside the machine head module, the strength of the main shaft can be improved by increasing the outer diameter of the main shaft, the structural requirement of the embroidery machine is better met, and the change of the outer diameter of the main shaft can not influence the overall dimension of the machine head and the internal installation space of the machine head. When the main shaft needs to be replaced, only the related components of the driving transmission mechanism need to be detached from the main shaft, and the components on the head module do not need to be detached, so that the number of the components needing to be detached is greatly reduced, the maintenance difficulty is reduced, and the maintenance efficiency is improved.

In the present embodiment, the axial direction of the needle bar drive shaft 210 is arranged in the left-right direction as viewed in the drawing, and the front-back direction as viewed in the drawing is arranged horizontally and vertically to the left-right direction.

The main shaft 810 is arranged above the head modules 820, each head module 820 is provided with two heads which are arranged side by side along the transverse direction, each head is provided with a needle rod driving shaft 210, the sub-driving transmission mechanisms 900 and the head modules 820 are arranged in a one-to-one correspondence manner, the output end of each sub-driving transmission mechanism 900 is matched with one needle rod driving shaft 210 of the head module 820, and a transmission matching structure is arranged between the two needle rod driving shafts 210.

The driving-independent transmission mechanism 900 includes a first primary pulley 910, a first secondary pulley 920 and a first transmission belt 930, the first primary pulley 910 is sleeved on the main shaft 810, the first secondary pulley 920 is sleeved on one of the needle bar driving shafts 210 of the head module 820, and the first transmission belt 930 is sleeved on the first primary pulley 910 and the first secondary pulley 920.

Referring to fig. 3, the transmission engagement structure between two adjacent needle bar driving shafts 210 includes a transmission protrusion 211 and a transmission groove 212 that are engaged with each other, the transmission protrusion 211 and the transmission groove 212 are respectively disposed at the end portions of two adjacent needle bar driving shafts 210, and the transmission protrusion 211 is engaged with the transmission groove 212. The main shaft 810 drives one of the needle bar driving shafts 210 of the head module 820 to rotate through the sub-drive transmission mechanism 900, and the needle bar driving shaft 210 drives the other needle bar driving shafts 210 to synchronously rotate through the transmission matching structure. In this embodiment, the driving protrusions 211 and the driving recesses 212 are in the shape of a straight line.

In order to improve the transmission effectiveness between the main shaft 810 and the needle bar drive shaft 210, each sub-drive transmission mechanism 900 further comprises a tensioning structure for tensioning the first transmission belt 930, the tensioning structure comprises a fixedly arranged support 940 and a tensioning member 950 rotatably arranged on the support 940, and the tensioning member 950 is in interference fit with the first transmission belt 930. In this embodiment, the embroidery machine includes a frame, the support 940 is fixed on the frame, the support 940 is provided with a through hole 941 having an inner diameter greater than an outer diameter of the main shaft 810, and the main shaft 810 passes through the support 940 from the through hole 941. The tensioning member 950 includes a tensioning bearing and a tensioning wheel, the tensioning bearing is rotatably disposed on the support 940 via a connecting pin, the tensioning wheel is fixedly sleeved outside the tensioning bearing, and the circumferential outer wall of the tensioning wheel abuts against the first driving belt 930 to tension the first driving belt 930.

The embroidery machine of this embodiment further includes a lower shaft 830 and a transmission case 840, the lower shaft 830 is transversely disposed at the bottom of the head module 820 and is used for driving components such as the shuttle case, an inter-shaft transmission structure between the main shaft 810 and the lower shaft 830 is disposed in the transmission case 840, and the main shaft 810 drives the lower shaft 830 to rotate through the inter-shaft transmission structure.

The transmission case 840 is fixed on the rack, in order to improve the transmission stability, the transmission case 840 is provided with two transmission cases 840, the two transmission cases 840 are respectively positioned at the left end and the right end of the main shaft 810 and the lower shaft 830, an inter-shaft transmission structure is respectively arranged in the two transmission cases 840, the left end of the main shaft 810 and the left end of the lower shaft 830 extend into the transmission case 840 at the left side, and the right end of the main shaft 810 and the right end of the lower shaft 830 extend into the transmission case 840 at the right side. The transmission structure between shafts adopts a belt wheel structure, and comprises a second main belt wheel 851, a second auxiliary belt wheel and a second transmission belt, wherein the second main belt wheel 851 is sleeved on the main shaft 810, the second auxiliary belt wheel is sleeved on the lower shaft 830, and the second transmission belt is sleeved on the second main belt wheel 851 and the second auxiliary belt wheel.

With reference to fig. 4 to 7, the handpiece further includes a casing 100, a guide rod 310, a needle bar driver 320, a needle bar cam 220 and a link structure 400, the needle bar driving shaft 210 is rotatably mounted on the casing 100 through a bearing, the guide rod 310 is vertically disposed on the casing 100, the needle bar driver 320 is sleeved on the guide rod 310, the needle bar cam 220 is sleeved on the needle bar driving shaft 210, and the link structure 400 is disposed between the needle bar cam 220 and the needle bar driver 320 and is used for driving the needle bar driver 320 to move up and down. The guide rod 310 and the needle bar drivers 320 are respectively provided with 2N needle bar drivers at intervals along the transverse direction, N is a positive integer and is a multiple of 2, N sets of connecting rod structures 400 are arranged side by side along the transverse direction, and each set of connecting rod structure 400 drives the two corresponding needle bar drivers 320.

The guide rod 310 is fixed to the front side of the housing 100, and the needle bar cam 220 is eccentrically sleeved on the needle bar driving shaft 210. Preferably, four guide rods 310 and four needle bar drivers 320 are arranged at equal intervals in the transverse direction, and two sets of linkage structures 400 are arranged side by side in the transverse direction. In order to meet the requirement of small space installation of the handpiece, one needle bar cam 220 is provided, and the two link structures 400 are matched with the same needle bar cam 220.

The connecting rod structure 400 includes a large connecting rod 410, a needle bar three-eye connecting rod 420 and a needle bar small connecting rod 430, the large connecting rod 410 is sleeved on the needle bar cam 220 and is in transmission connection with the needle bar three-eye connecting rod 420, the rear end of the needle bar three-eye connecting rod 420 is rotatably connected to the machine case 100, and two ends of the needle bar small connecting rod 430 are respectively rotatably connected to the needle bar three-eye connecting rod 420 and the needle bar driver 320. In this embodiment, a transverse intermediate shaft 440 is disposed on the casing 100, the intermediate shaft 440 is located below the needle bar driving shaft 210, the upper ends of the two large connecting rods 410 of the two sets of connecting rod structures 400 are horizontally sleeved side by side on the circumferential outer portion of the needle bar cam 220 and are axially limited, the lower ends of the two large connecting rods 410 are all sleeved on the intermediate shaft 440 and tightly clasp the intermediate shaft 440 through bolts, and the rod body portions of the two large connecting rods are arranged in an eight-shape. The rear end of the needle bar three-eye link 420 is hinged to the machine case 100 through a positioning pin, the approximate middle part of the needle bar three-eye link 420 is sleeved on the intermediate shaft 440 through a bearing, and the large link 410 is in transmission connection with the needle bar three-eye link 420 through the intermediate shaft 440. Each set of link structure 400 is provided with two needle bar small links 430 respectively located at the left and right sides of the needle bar three-eye link 420, one end of the needle bar small link 430 is hinged to the front end of the needle bar three-eye link 420 through a connecting pin, and the other end is hinged to the corresponding needle bar driver 320 through a connecting pin. The needle bar driving shaft 210 drives the needle bar cam 220 to rotate when rotating, the needle bar cam 220 drives the needle bar driver 320 to move up and down relative to the guide rod 310 through the large connecting rod 410, the middle shaft 440, the needle bar three-eye connecting rod 420 and the needle bar small connecting rod 430, the needle bar driver 320 is matched with the corresponding needle bar on the needle bar frame and drives the needle bar to move up and down, and the purpose of driving the multiple needle bars is achieved. Specifically, the left set of linkage arrangements 400 drives the left two needle bar drivers 320, and the right set of linkage arrangements 400 drives the right two needle bar drivers 320.

In order to axially limit the large connecting rods 410, the circumferential outer wall of the needle bar cam 220 is provided with a limiting convex edge 221, a limiting plate 230 is fixed on one axial side of the needle bar cam 220 far away from the limiting convex edge 221, the outer diameter of the limiting plate 230 is larger than that of the needle bar cam 220, one axial side of each of the two large connecting rods 410 is abutted against the limiting convex edge 221, the other axial side of each of the two large connecting rods 410 is abutted against the limiting plate 230, and the large connecting rods 410 sleeved on the needle bar cam 220 are axially limited through the limiting convex edges 221 and the limiting plates 230.

As shown in fig. 8 to 10, in order to ensure embroidery quality, the head further includes a presser foot driving wheel 240, a presser foot mechanism 500, a presser foot transmission mechanism 600, and a presser foot adjustment mechanism 700. The presser foot driving wheel 240 is eccentrically sleeved on the needle bar driving shaft 210, the presser foot mechanism 500 comprises a presser foot strip 510, a presser foot 520 and a plurality of presser foot lifting rods 530, the presser foot strip 510 is transversely arranged at the bottom of the machine shell 100, the presser feet 520 are arranged on the presser foot strip 510 and are transversely spaced, the presser foot lifting rods 530 are vertically arranged on the machine shell 100, and the bottom ends of the presser foot lifting rods are connected to the presser foot strip 510. The presser foot transmission mechanism 600 is disposed between the presser foot driving wheel 240 and the presser foot lifting rod 530 and is used for driving the presser foot mechanism 500 to move up and down, and the presser foot adjustment mechanism 700 is disposed on the machine shell 100 and adjusts the vertical position of the presser foot mechanism 500 through the presser foot transmission mechanism 600.

In this embodiment, the number of the presser feet 520 is one-to-one corresponding to the number of the needle bar drivers 320, that is, four presser feet 520 are provided at equal intervals in the lateral direction. To improve the stability of the vertical movement of the presser foot mechanism 500, two presser foot lifting rods 530 are provided at intervals in the lateral direction and correspond to the two ends of the presser foot bar 510. To avoid interference of the presser foot mechanism 500 with the engagement between the needle bar driver 320 and the needle bar, the left presser foot lifting lever 530 is located on the left side of the leftmost guide bar 310, and the right presser foot lifting lever 530 is located on the right side of the rightmost guide bar 310.

In order to improve the lifting stability of the presser foot mechanism 500, the presser foot mechanism 500 further includes presser foot drivers 540 disposed in one-to-one correspondence with the presser foot lifting rods 530, the left presser foot driver 540 is sleeved on the leftmost guide rod 310 and located at the bottom of the needle rod driver 320, the right presser foot driver 540 is sleeved on the rightmost guide rod 310 and located at the bottom of the needle rod driver 320, the top end of the left presser foot lifting rod 530 is fixedly connected with the left presser foot driver 540, and the top end of the right presser foot lifting rod 530 is fixedly connected with the right presser foot driver 540. Correspondingly, two sets of presser foot transmission mechanisms 600 are arranged at intervals along the transverse direction and are arranged in one-to-one correspondence with the two presser foot drivers 540.

The presser foot transmission mechanism 600 comprises a presser foot driving rod 610, a presser foot transmission rod 620, a presser foot three-hole connecting rod 630 and a presser foot small connecting rod 640, the presser foot adjusting mechanism 700 comprises an adjusting motor, an adjusting transmission structure and a presser foot shaft 750, the presser foot shaft 750 is rotatably erected on the machine shell 100 through a bearing and is positioned below the needle rod driving shaft 210, and a pipe sleeve 770 is sleeved outside the presser foot shaft 750.

The front end of the presser foot drive rod 610 is provided with a linkage 650 which can be rotatably arranged, the axial side wall of the presser foot drive wheel 240 is provided with a cam groove 241 matched with the linkage 650, the linkage 650 is positioned in the cam groove 241, and the front end of the presser foot drive rod 610 is matched with the presser foot drive wheel 240 through the matching of the linkage and the cam groove. Specifically, the linkage 650 includes a linkage bearing disposed at the front end of the presser foot driving lever 610 through a connecting pin, and a linkage wheel sleeved outside the linkage bearing.

The rear end of the presser foot drive rod 610 is sleeved outside the pipe sleeve 770 to realize rotatable arrangement, the rear end of the presser foot three-eye connecting rod 630 is sleeved outside the presser foot shaft 750, one end of the presser foot drive rod 620 is hinged with the presser foot drive rod 610 through a connecting pin, the other end of the presser foot drive rod 620 is hinged with the approximate middle part of the presser foot three-eye connecting rod 630 through a connecting pin, one end of the presser foot small connecting rod 640 is hinged with the front end of the presser foot three-eye connecting rod 630 through a connecting pin, and the other end of the presser foot small connecting rod 640 is hinged with the corresponding presser foot driver 540 through a connecting pin. When the needle bar driving shaft 210 rotates, the presser foot driving wheel 240 is driven to rotate, the presser foot driving wheel 240 drives the presser foot three-hole connecting rod 630 to swing up and down through the linkage 650, the presser foot driving rod 610 and the presser foot driving rod 620, the presser foot three-hole connecting rod 630 drives the presser foot driver 540 to move up and down relative to the guide rod 310 through the presser foot small connecting rod 640, and the presser foot driver 540 drives the presser foot 520 to move up and down through the presser foot lifting rod 530 and the presser foot strip 510, so that the purpose of repeatedly pressing the upper thread can be realized by matching the presser foot 520 with the needle bar when the embroidery machine works.

In this embodiment, the adjusting transmission structure includes an adjusting transmission shaft 710, an adjusting main pulley 720, an adjusting auxiliary pulley 730 and an adjusting transmission belt 740, the adjusting transmission shaft 710 is driven by an adjusting motor, the adjusting transmission shaft 710 is disposed at the rear side of the casing 100 in a transverse axial direction, the adjusting main pulley 720 is sleeved on the adjusting transmission shaft 710, the adjusting auxiliary pulley 730 is sleeved on the presser foot shaft 750, and the adjusting transmission belt 740 is sleeved on the adjusting main pulley 720 and the adjusting auxiliary pulley 730. The adjusting motor drives the adjusting transmission shaft 710 to rotate, the adjusting transmission shaft 710 drives the presser foot shaft 750 to rotate through the belt wheel structure, the presser foot shaft 750 can drive the presser foot three-hole connecting rod 630 to swing up and down when rotating, and the presser foot adjusting mechanism 700 achieves the purpose of adjusting the vertical position of the presser foot mechanism 500 by adjusting the inclination angle between the presser foot three-hole connecting rod 630 and the horizontal direction. Under the conditions that the embroidery cloth needs to be replaced, the embroidery machine needs to be stopped and the like, the presser foot mechanism 500 can be lifted through the presser foot adjusting mechanism 700, and the interference of the presser foot mechanism 500 on the operation of replacing the embroidery cloth and the like is avoided. After the operation is completed, the presser foot mechanism 500 is lowered through the presser foot adjusting mechanism 700, so that the presser foot mechanism 500 can reciprocate up and down under the driving of the presser foot transmission mechanism 600 to achieve the purpose of repeatedly pressing the upper thread.

In this embodiment, in order to increase the amplitude of the vertical swing of the presser foot adjustment mechanism 700 driving the presser foot three-eye connecting rod 630, the presser foot adjustment mechanism 700 further includes an adjustment cam 760 eccentrically sleeved on the presser foot shaft 750, and the rear end of the presser foot three-eye connecting rod 630 is sleeved outside the adjustment cam 760 and axially limited.

When the main drive motor works, the main shaft 810 is driven to rotate, and the main shaft 810 drives the needle bar driving shafts 210 on the machine head modules 820 to rotate through the sub-drive transmission mechanism 900. The needle bar driving shaft 210 drives the needle bar driver 320 to move up and down through the needle bar cam 220 and the link structure 440, and the needle bar driver 320 drives the needle bar engaged therewith to move up and down for embroidering. Meanwhile, the needle bar driving shaft 210 drives the presser foot mechanism 500 to move up and down through the presser foot cam 240 and the presser foot transmission mechanism 600, so that the presser foot 520 can work in cooperation with the needle bar to achieve the purpose of repeatedly pressing the upper thread.

In the case where the embroidery cloth needs to be replaced, the presser foot mechanism 500 may be lifted up by the presser foot adjustment mechanism 700. After the replacement is completed, the presser foot mechanism 500 is moved down to the working position by the presser foot adjusting mechanism 700.

It is to be understood that the specific number of the guide rods 310, the needle bar drivers 320, the link structures 400 and the needle bar cams 220 on each head is not limited to those described above and shown in the drawings, and the number of the guide rods 310 and the needle bar drivers 320 may be increased correspondingly if the head is increased in lateral dimension. If the guide rod 310 and the needle bar driver 320 are arranged at eight intervals along the transverse direction, at this time, two needle bar cams 220 are sleeved on the needle bar driving shaft 210, the connecting rod structures 400 are arranged in four sets, the large connecting rods 410 of the two sets of connecting rod structures 400 on the left side are sleeved on the needle bar cam 220 on the left side, the large connecting rods 410 of the two sets of connecting rod structures 400 on the right side are sleeved on the needle bar cam 220 on the right side, the middle shaft 440 can be arranged to be one, and the middle shafts 440 are all embraced by the lower ends of the large connecting rods 410 of the four sets of connecting rod structures 400. Of course, two intermediate shafts 440 may be arranged at intervals in the transverse direction, the left intermediate shaft 440 is engaged with the large links 410 of the left two sets of link structures 400, and the right intermediate shaft 440 is engaged with the large links 410 of the right two sets of link structures 400.

It is understood that the number of presser feet 520 in the presser foot mechanism 500 coincides with the number of needle bar drivers 320, i.e., the presser feet and the needle bar drivers are provided in one-to-one correspondence.

It is understood that another limiting plate may be used instead of the limiting ledge 221 on the circumferential outer wall of the needle bar cam 220 to axially limit the large link 410, and at this time, the two limiting plates are fixed to the two axial sides of the needle bar cam 220.

It should be understood that the specific shapes of the driving protrusions 211 and the driving recesses 212 are not limited to the shape of a straight line as described above and shown in the drawings, and may be other reasonable shapes such as a cross shape, a meter shape, etc.

It is understood that the specific number of heads in each head module 820 is not limited to two as described above and shown in the drawings, and may be set to one, three, etc. other reasonable numbers.

It will be appreciated that the specific construction of the handpiece is not limited to that described above and shown in the drawings and that other suitable constructions may be used.

In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.

Claims

1. The modular embroidery machine comprises a transverse main shaft and a main drive motor for driving the main shaft, and is characterized by further comprising a plurality of machine head modules arranged at intervals along the transverse direction, wherein the main shaft is arranged outside each machine head module, each machine head module is provided with a transverse needle rod driving shaft, and a separate drive transmission mechanism is arranged between the needle rod driving shaft of each machine head module and the main shaft.

2. The modular embroidery machine as claimed in claim 1, wherein the drive-dividing transmission mechanism includes a first primary pulley, a first secondary pulley, and a first transmission belt, the first primary pulley is disposed on the primary shaft, the first secondary pulley is disposed on the needle bar driving shaft, and the first transmission belt is disposed on the first primary pulley and the first secondary pulley.

3. The modular embroidery machine of claim 2, wherein the drive-dividing transmission further comprises a tensioning structure for tensioning the first drive belt.

4. The modular embroidery machine as claimed in claim 3, wherein the tensioning structure comprises a fixedly disposed support and a tensioning member rotatably disposed on the support, the tensioning member being in interference engagement with the first belt.

5. The modular embroidery machine as claimed in claim 4, wherein the support is provided with a through hole having an inner diameter larger than an outer diameter of the main shaft, and the main shaft is disposed through the support; and/or the tensioning piece comprises a tensioning bearing and a tensioning wheel sleeved outside the tensioning bearing.

6. The modular embroidery machine as claimed in claim 1, wherein the head module comprises at least two heads disposed side by side in a transverse direction, each head having a needle bar driving shaft, each sub-drive transmission mechanism being engaged with one of the needle bar driving shafts of the corresponding head module, and a transmission engagement structure being provided between adjacent two needle bar driving shafts.

7. The modular embroidery machine as claimed in claim 6, wherein the transmission engagement structure comprises a transmission protrusion and a transmission groove, which are engaged with each other, and the transmission protrusion and the transmission groove are respectively provided at the ends of two adjacent needle bar driving shafts, and the transmission protrusion is engaged in the transmission groove.

8. The modular embroidery machine as claimed in claim 1, further comprising a lower shaft disposed transversely at the bottom of the head module, and a transmission case in which an inter-shaft transmission structure is disposed between the main shaft and the lower shaft, wherein the main shaft drives the lower shaft to rotate through the inter-shaft transmission structure.

9. The modular embroidery machine as claimed in claim 8, wherein the inter-shaft transmission structure comprises a second primary pulley, a second secondary pulley and a second transmission belt, the second primary pulley is sleeved on the primary shaft, the second secondary pulley is sleeved on the lower shaft, and the second transmission belt is sleeved on the second primary pulley and the second secondary pulley.

10. The modular embroidery machine as claimed in claim 8, wherein the transmission case is provided with two and located at both lateral ends of the main shaft and the lower shaft, respectively.