CN214422879U - Embroidery machine head and embroidery machine - Google Patents

Abstract

The utility model discloses an embroidery machine aircraft nose and embroidery machine, belong to embroidery machine technical field, the embroidery machine aircraft nose includes the casing, the needle bar drive shaft, the needle bar cam, the guide arm, the needle bar driver, the connecting rod structure, the presser foot drive wheel, presser foot mechanism, presser foot drive mechanism and presser foot guiding mechanism, presser foot mechanism includes the presser foot strip, presser foot and presser foot lifter, the bottom of casing is transversely arranged in to the presser foot strip, the presser foot is located on the presser foot strip and is equipped with a plurality ofly along horizontal interval, the presser foot lifter erects to be put on the casing and the bottom is connected in the presser foot strip, presser foot drive mechanism locates between presser foot drive wheel and the presser foot lifter and is used for driving presser foot mechanism up-and-down motion, presser foot guiding mechanism locates on the casing and through the vertical position of presser foot drive mechanism adjustment presser foot mechanism. The presser foot adjusting mechanism can adjust the vertical position of the presser foot mechanism through the presser foot transmission mechanism, is convenient to lift the presser foot mechanism in the states of changing embroidery cloth, stopping and the like, and avoids the interference of the presser foot mechanism on the operation of changing embroidery cloth and the like.

Description

Embroidery machine head and embroidery machine

Technical Field

The utility model relates to an embroidery machine technical field especially relates to an embroidery machine aircraft nose, in addition, the utility model discloses still relate to the embroidery machine who adopts this kind of embroidery machine aircraft nose.

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. The presser foot driving structure of the existing lace type embroidery machine is mainly divided into two types, one type is a structure of a single-side open type cam and a spring, the other type is a structure of a motor and a link mechanism, and the two types of driving mechanisms have respective defects. In the first presser foot driving structure, the elasticity of the spring is uncontrollable, and the speed of the presser foot during up-and-down movement is restricted. In the second presser foot driving structure, the motor adopts the mode of luffing motion, and the operating power of motor can't satisfy the drive requirement that aircraft nose quantity constantly increases on the market.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects and deficiencies existing in the prior art, the utility model provides an embroidery machine head which effectively meets the driving requirement of a presser foot.

In order to achieve the technical purpose, the embroidery machine head provided by the utility model comprises a machine shell, a needle rod driving shaft which can rotate and is horizontally arranged on the machine shell, a needle rod cam which is eccentrically sleeved on the needle rod driving shaft, and a guide rod which is vertically arranged on the machine shell, the needle bar driver on the guide arm is located to the cover, locate connecting rod structure and eccentric cover between needle bar cam and the needle bar driver and locate the presser foot drive wheel on the needle bar drive shaft, still include presser foot mechanism, presser foot drive mechanism and presser foot guiding mechanism, presser foot mechanism includes the presser foot strip, presser foot and presser foot lifter, the bottom of casing is transversely arranged in to the presser foot strip, the presser foot is located on the presser foot strip and is equipped with a plurality ofly along horizontal interval, the presser foot lifter erects to be put on the casing and the bottom is connected in the presser foot strip, presser foot drive mechanism locates between presser foot drive wheel and the presser foot lifter and is used for driving presser foot mechanism up-and-down motion, presser foot guiding mechanism locates on the casing and through the vertical position of presser foot drive mechanism adjustment presser foot mechanism.

Preferably, the presser foot transmission mechanism comprises a presser foot three-eye connecting rod capable of swinging up and down, the rear end of the presser foot three-eye connecting rod can be arranged in a rotating mode, the front end of the presser foot three-eye connecting rod is connected to the presser foot lifting rod, and the presser foot adjusting mechanism adjusts the vertical position of the presser foot mechanism by adjusting the inclination angle of the presser foot three-eye connecting rod relative to the horizontal direction.

Preferably, the presser foot adjusting mechanism comprises an adjusting motor, an adjusting transmission structure and a presser foot shaft, the presser foot shaft is rotatably and transversely arranged on the machine shell, the rear end of the presser foot three-hole connecting rod is sleeved on the presser foot shaft, and the adjusting motor drives the presser foot shaft to rotate through the adjusting transmission structure.

Preferably, the presser foot transmission mechanism comprises a presser foot driving rod, a presser foot transmission rod and a presser foot small connecting rod, one end of the presser foot driving rod can be arranged in a rotating mode, the other end of the presser foot driving rod is matched with the presser foot driving wheel, two ends of the presser foot transmission rod are respectively connected with the presser foot driving rod and the presser foot three-hole connecting rod, two ends of the presser foot small connecting rod are respectively connected with the presser foot three-hole connecting rod and the presser foot lifting rod, and the presser foot driving wheel drives the presser foot mechanism to move up and down through the presser foot driving rod, the presser foot transmission rod, the presser foot three-hole connecting rod and the presser foot small connecting rod.

Preferably, the presser foot mechanism comprises a presser foot driver sleeved on the guide rod and positioned below the needle rod driver, the top end of the presser foot lifting rod is connected with the presser foot driver, and the presser foot small connecting rod is hinged with the presser foot driver.

Preferably, the presser foot lifting rods are arranged at intervals along the transverse direction, and the two sets of presser foot transmission mechanisms are arranged and correspond to the presser foot lifting rods one to one.

Preferably, the guide rod and the needle bar driver are respectively provided with 2N needle bar drivers and the needle bar drivers are arranged in a one-to-one correspondence mode along the transverse direction at intervals, N is a positive integer and is a multiple of 2, N sets of connecting rod structures are arranged side by side along the transverse direction, and each set of connecting rod structure is used for driving the two corresponding needle bar drivers.

Preferably, the connecting rod structure comprises a large connecting rod, a middle shaft, a needle rod three-eye connecting rod and a needle rod small connecting rod, one end of the large connecting rod is sleeved on the needle rod cam, the other end of the large connecting rod tightly holds the middle shaft, the middle shaft is sleeved on the needle rod three-eye connecting rod, the rear end of the needle rod three-eye connecting rod is rotatably connected to the machine shell, and two ends of the needle rod small connecting rod are respectively rotatably connected to the front end of the needle rod three-eye connecting rod and the needle rod driver.

Preferably, the needle bar cam is provided with N/2 connecting rods at intervals along the transverse direction, and the large connecting rods of the two adjacent sets of connecting rod structures corresponding to the needle bar cam are sleeved on the needle bar cam side by side along the transverse direction and are limited axially.

The utility model also provides an embroidery machine, an embroidery machine aircraft nose including the above-mentioned record.

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

1. the utility model provides an embroidery machine aircraft nose, presser foot mechanism set up a plurality of presser feet along horizontal interval distribution, and the quantity of presser foot is unanimous with the needle bar quantity that carries out the embroidery, and the needle bar drive shaft passes through presser foot drive wheel and presser foot drive mechanism drive presser foot mechanism up-and-down motion, makes presser foot mechanism can effectually press the upper thread at embroidery machine during operation, satisfies the drive requirement of presser foot, is favorable to improving embroidery quality. The presser foot adjusting mechanism can adjust the vertical position of the presser foot mechanism through the presser foot transmission mechanism, is convenient to lift the presser foot mechanism in the states of changing embroidery cloth, stopping and the like, and avoids the interference of the presser foot mechanism on the operation of changing embroidery cloth and the like.

2. The adjusting motor of the presser foot adjusting mechanism drives the presser foot three-eye connecting rod to swing through adjusting the transmission structure and the presser foot shaft, the purpose of adjusting the vertical position of the presser foot mechanism is realized by changing the inclination angle of the presser foot three-eye connecting rod relative to the horizontal direction, the structure of the presser foot adjusting mechanism is reasonable, and the requirement of adjusting the vertical position of the presser foot mechanism can be well met.

3. The rear end of the presser foot three-hole connecting rod is sleeved on the presser foot shaft, the presser foot shaft drives the presser foot three-hole connecting rod to swing up and down when rotating, the connection relation between the presser foot three-hole connecting rod and the presser foot adjusting mechanism is reasonably arranged, and the presser foot adjusting mechanism can drive the presser foot three-hole connecting rod to effectively swing when adjusting the vertical position of the presser foot mechanism, so that the presser foot three-hole connecting rod can drive the presser foot mechanism to effectively lift.

4. The presser foot driver is sleeved on the guide rod, the presser foot lifting rod is connected to the presser foot driver, the small presser foot connecting rod is connected to the presser foot driver and drives the presser foot mechanism to move up and down through the presser foot driver, the matching structure between the presser foot transmission mechanism and the presser foot mechanism is reasonably arranged, and the stability of the presser foot transmission mechanism driving the presser foot mechanism to move up and down is improved.

6. The presser foot lifting rods are arranged at intervals along the transverse direction, two sets of presser foot transmission mechanisms are arranged, each set of presser foot transmission mechanism drives one corresponding presser foot lifting rod, the number of the presser foot lifting rods and the number of the presser foot transmission mechanisms are reasonably set, the stability of the presser foot transmission mechanism driving the presser foot mechanism to move up and down is effectively improved, the presser foot strip is kept horizontal when moving up and down, and therefore each presser foot can effectively press the corresponding upper thread when working.

7. Every set of connecting rod structure drives two needle bar drivers that correspond, connecting rod structure on the same aircraft nose sets up side by side along transversely, rationally set up the corresponding relation between connecting rod structure and the needle bar driver, satisfy the drive requirement of a plurality of needle bar drivers when suitably controlling connecting rod structure quantity, reduce the required installation space of connecting rod structure, be favorable to the inner structure of rationally simplifying the aircraft nose, reserve sufficient installation space for other components of aircraft nose, make the aircraft nose can satisfy many needle bar driven structural requirement.

8. The connecting rod structure adopts a structure that a large connecting rod, a needle rod three-eye connecting rod, an intermediate shaft and a needle rod small connecting rod are matched, when a needle rod cam rotates, the intermediate shaft is driven to move up and down through the large connecting rod, the intermediate shaft drives the needle rod three-eye connecting rod to swing up and down, and the needle rod three-eye connecting rod drives a needle rod driver to move up and down along a guide rod through the small connecting rod, so that the aim of embroidering by driving the corresponding needle rod to move up and down is fulfilled. The connecting rod structure has simple components and can well meet the transmission requirement. The big connecting rods of all the sleeve connecting rod structures drive the corresponding needle rod three-eye connecting rods to swing through the middle shaft, so that the motion stability of the middle shaft is improved, the stability that the needle rod three-eye connecting rods of all the sleeve connecting rod structures drive the needle rod driver to move up and down through the small needle rod connecting rods is improved, and the work stability of the needle rods is improved.

9. The needle bar cams are half of the connecting rods in number, the large connecting rods of the two sets of connecting rod structures corresponding to a certain needle bar cam are transversely sleeved on the needle bar cam side by side, the large connecting rods of the two sets of connecting rod structures are driven by one needle bar cam, the quantity of the needle bar cams is reasonably reduced, meanwhile, the transmission requirement between the needle bar driving shaft and the connecting rod structures is met, the internal structure of the machine head is further reasonably simplified, and sufficient installation space is reserved for other components of the machine head.

Drawings

Fig. 1 is a schematic perspective view of a machine head of a multi-needle presser foot embroidery machine according to an embodiment of the present invention;

fig. 2 is a schematic view of a presser foot mechanism, a presser foot transmission mechanism and a presser foot adjusting mechanism in a multi-needle presser foot embroidery machine head according to an embodiment of the present invention;

FIG. 3 is an exploded view of a portion of the components of FIG. 2;

fig. 4 is another perspective view of a multi-needle presser foot embroidery machine head according to an embodiment of the present invention;

fig. 5 is a schematic view of a connecting rod structure and a needle bar driving shaft in a multi-needle presser foot embroidery machine head 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 components of the link structure, the guide rod and the needle bar driver in the head of the multi-needle presser foot embroidery machine according to the embodiment of the present invention;

fig. 8 is a schematic view of an embroidery machine according to an embodiment of the present invention;

fig. 9 is a schematic view of a central drive transmission mechanism in an embroidery machine according to an embodiment of the present invention;

fig. 10 is a schematic view of a transmission matching structure between two adjacent needle bar driving shafts in an embroidery machine according to an embodiment of the present invention.

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 to 7, a machine head of an embroidery machine according to a first embodiment of the present invention includes a housing 100, a needle bar driving shaft 210 rotatably disposed on the housing, a needle bar cam 220 eccentrically sleeved on the needle bar driving shaft, a guide rod 310 vertically disposed on the housing, a needle bar driver 320 sleeved on the guide rod, a connecting rod structure 400 disposed between the needle bar cam and the needle bar driver, and a presser foot driving wheel 240 eccentrically sleeved on the needle bar driving shaft. The machine head further comprises a presser foot mechanism 500, a presser foot transmission mechanism 600 and a presser foot adjusting mechanism 700, wherein the presser foot mechanism 500 comprises a presser foot strip 510, a presser foot 520 and a presser foot lifting rod 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 arranged at intervals, the presser foot lifting rod 530 is vertically arranged on the machine shell 100, and the bottom end of the presser foot lifting rod 530 is 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 needle bar drive shaft 210 is disposed in the axial direction in the left-right direction as viewed in the drawing, and the front-back direction as viewed in the drawing is disposed horizontally and vertically to the left-right direction, and the needle bar drive shaft 210 is rotatably mounted on the housing 100 via a bearing. The number of the presser feet 520 corresponds to the number of the needle bar drivers 320, and specifically, four presser feet 520, the guide rod 310 and the needle bar drivers 320 are arranged at equal intervals in the transverse 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.

Referring to fig. 3, the presser foot transmission mechanism 600 includes 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 adjustment mechanism 700 includes an adjustment motor, an adjustment transmission structure and a presser foot shaft 750, the presser foot shaft 750 is rotatably mounted on the housing 100 through a bearing and is located below the needle bar driving shaft 210, and a 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.

Two sets of the link structures 400 in this embodiment are arranged side by side in the lateral 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.

The embodiment also provides an embroidery machine, which comprises the embroidery machine head.

With reference to fig. 8 and 9, the embroidery machine of the present embodiment adopts a modular structure, and includes a transverse main shaft 810, a main driving motor for driving the main shaft 810, and a plurality of head modules 820 arranged at intervals in the transverse direction, the main shaft 810 is arranged outside each head module 820, each head module 820 is provided with a transverse needle bar driving shaft 210, and a sub-driving transmission mechanism 900 is arranged between the needle bar driving shaft 210 of each head module 820 and the main shaft 810.

In this embodiment, the main shaft 810 is disposed above the head modules 820, each head module 820 is provided with two heads disposed side by side in the transverse direction, each head is provided with a needle bar driving shaft 210, the sub-driving transmission mechanisms 900 are disposed in one-to-one correspondence with the head modules 820, an output end of each sub-driving transmission mechanism 900 is engaged with one needle bar driving shaft 210 of the head module 820, and a transmission engagement structure is disposed between the two needle bar 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. 10, 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 in 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.

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 is understood that other suitable configurations for linkage structure 400 are possible.

It is to be understood that the scope of application of the embroidery machine head of the present embodiment is not limited to the embroidery machine described above and shown in the drawings, and can be applied to embroidery machines of other structures.

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 (10)

1. An embroidery machine head comprises a machine shell, a needle rod driving shaft which can rotate and is transversely arranged on the machine shell, a needle rod cam eccentrically sleeved on the needle rod driving shaft, a guide rod vertically arranged on the machine shell, a needle rod driver sleeved on the guide rod, a connecting rod structure arranged between the needle rod cam and the needle rod driver, and a presser foot driving wheel eccentrically sleeved on the needle rod driving shaft, the presser foot mechanism comprises a presser foot strip, a plurality of presser feet and presser foot lifting rods, the presser foot strip is transversely arranged at the bottom of the machine shell, the presser feet are arranged on the presser foot strip and are arranged along the transverse interval, the presser foot lifting rods are vertically arranged on the machine shell, the bottom ends of the presser foot lifting rods are connected to the presser foot strip, the presser foot transmission mechanism is arranged between the presser foot driving wheel and the presser foot lifting rods and is used for driving the presser foot mechanism to move up and down, and the presser foot adjusting mechanism is arranged on the machine shell and adjusts the vertical position of the presser foot mechanism through the presser foot transmission mechanism.

2. The embroidery machine head as claimed in claim 1, wherein the presser foot transmission mechanism comprises a presser foot three-eye link rod capable of swinging up and down, the rear end of the presser foot three-eye link rod is rotatably arranged, the front end of the presser foot three-eye link rod is connected to the presser foot lifting rod, and the presser foot adjusting mechanism realizes the adjustment of the vertical position of the presser foot mechanism by adjusting the inclination angle of the presser foot three-eye link rod relative to the horizontal direction.

3. The embroidery machine head as claimed in claim 2, wherein the presser foot adjustment mechanism comprises an adjustment motor, an adjustment transmission structure and a presser foot shaft, the presser foot shaft is rotatably disposed on the housing, the rear end of the presser foot three-hole connecting rod is sleeved on the presser foot shaft, and the adjustment motor drives the presser foot shaft to rotate through the adjustment transmission structure.

4. The embroidery machine head as claimed in claim 2, wherein the presser foot drive mechanism comprises a presser foot drive lever, a presser foot drive lever and a presser foot small link, one end of the presser foot drive lever is rotatably arranged, the other end of the presser foot drive lever is matched with the presser foot drive wheel, two ends of the presser foot drive lever are respectively connected with the presser foot drive lever and the presser foot three-hole link, two ends of the presser foot small link are respectively connected with the presser foot three-hole link and the presser foot lifting link, and the presser foot drive wheel drives the presser foot mechanism to move up and down through the presser foot drive lever, the presser foot three-hole link and the presser foot small link.

5. The embroidery machine head as claimed in claim 4, wherein the presser foot mechanism includes a presser foot driver sleeved on the guide rod and located below the needle rod driver, the top end of the presser foot lifting rod is connected with the presser foot driver, and the presser foot small link is hinged with the presser foot driver.

6. The embroidery machine head as claimed in claim 1, wherein there are two presser foot lift rods spaced apart in the lateral direction, and two sets of presser foot drive mechanisms are provided and provided in one-to-one correspondence with the presser foot lift rods.

7. The embroidery machine head as claimed in claim 1, wherein the guide rod and the needle bar drivers are each provided with 2N needle bar drivers at intervals in the transverse direction and the needle bar drivers are provided in one-to-one correspondence with the presser foot, N being a positive integer and a multiple of 2, and N sets of link structures are provided side by side in the transverse direction, each set of link structures being for driving the two needle bar drivers corresponding thereto.

8. The embroidery machine head as claimed in claim 7, wherein the link structure comprises a large link, a middle shaft, a needle bar three-eye link and a needle bar small link, one end of the large link is sleeved on the needle bar cam, the other end of the large link tightly embraces the middle shaft, the needle bar three-eye link is sleeved on the middle shaft, the rear end of the needle bar three-eye link is rotatably connected to the machine shell, and the two ends of the needle bar small link are rotatably connected to the front end of the needle bar three-eye link and the needle bar driver respectively.

9. The embroidery machine head as claimed in claim 8, wherein the needle bar cam is provided with N/2 of the needle bar cams at intervals in the transverse direction, and the large connecting rods of the two adjacent sets of connecting rod structures corresponding to the needle bar cams are sleeved on the needle bar cams side by side in the transverse direction and are axially limited.

10. An embroidery machine characterized by comprising an embroidery machine head according to any one of claims 1 to 9.

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