Machine head structure of high-speed embroidery machine

Abstract

The utility model discloses a machine head structure of a high-speed embroidery machine, a first eccentric part, a second eccentric part and a third eccentric part are sequentially arranged on a main shaft, the first eccentric part is in transmission connection with a presser foot, the second eccentric part is in transmission connection with a machine needle, the third eccentric part comprises a take-up cam arranged on the wall of a case, and the take-up cam is in transmission connection with a take-up lever. The thread take-up cam is arranged on the outer wall of the case, the working state of the embroidery thread guide driving mechanism can be checked at any time by opening a protective door plate on the case in a normal working state, the occurrence frequency of thread breakage and thread jamming caused by faults of a transmission mechanism is reduced, the operation is convenient and fast, the shutdown and maintenance time of the embroidery machine can be obviously reduced, and the working efficiency is improved. The two transmission assemblies are mutually connected and influenced, so that the resonance phenomenon of the two transmission mechanisms can be slowed down or slowed down, the overall stability of the machine head is improved, and the purposes of ensuring the embroidery quality and being mute under the high-speed operation of the main shaft are further achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to embroidery machine technical field, especially a kind of head structure of high-speed embroidery machine. BACKGROUND

[0002] The head of current high-speed embroidery machine is basically traditional head plus a presser foot cam and an eccentric swing rod, that is, first use presser foot cam to drive presser foot to press tightly cloth, and then through eccentric swing rod to carry out dynamic balance connection, then through needle cam to drive needle to pull embroidery thread to pass through cloth to carry out embroidery, while another eccentric swing rod pulls embroidery thread to swing in time to ensure that embroidery thread moves smoothly. This structure setting makes that two eccentric swing rods on head always keep the same movement direction, which is easy to resonate when high-speed rotating of embroidery machine, affects the instability of transmission mechanism and produces larger noise, affects the position accuracy of presser foot and needle at the end of mechanism on cloth, and further affects embroidery quality. On the other hand, limited by the structure layout of head, the overall head box is C-shaped structure at present, transmission mechanism is all placed in box, when adjusting or overhauling head, box is opened, when overhauling inner transmission mechanism, structure member on the outside or side thereof needs to be disassembled, which is complicated operation, time-consuming and laborious. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a head structure of high-speed embroidery machine, thread take-up cam is arranged on the outer wall of machine box, in normal working state, the working state of embroidery thread guide driving mechanism can be checked at any time by opening the protection door plate on machine box, the frequency of thread breakage and thread jam caused by transmission mechanism failure is reduced, it is convenient and fast to operate, embroidery machine downtime and overhauling time can be obviously reduced, the production efficiency of embroidery machine is improved, two transmission assemblies are connected with each other, resonance phenomenon of two transmission mechanisms can be slowed down or slowed down, the overall stability of head is improved, and the purpose of ensuring embroidery quality and being silent under high-speed rotation of main shaft is achieved.

[0004] To solve the above technical problems, the utility model takes a technical scheme as follows:

[0005] A head structure of high-speed embroidery machine, the head comprises machine box and needle bar support arranged on machine frame, main shaft and thread take-up shaft are arranged in machine box, the main shaft is in transmission connection with driving device, and first eccentric part, second eccentric part and third eccentric part in transmission connection with the main shaft are sequentially arranged on the main shaft, the first eccentric part is in transmission connection with presser foot and can drive linear reciprocating motion of the presser foot to press tightly or release cloth, the second eccentric part is in transmission connection with needle and can drive linear reciprocating motion of the needle to pull embroidery thread to pass through or pass out cloth, the third eccentric part can drive rotation of the thread take-up shaft to pull thread take-up lever on the thread take-up shaft to drive embroidery thread on the thread take-up lever to move forward on the needle bar support, the needle is arranged at the end of needle bar on the needle bar support, and the presser foot is slidably sleeved on the needle bar.

[0006] The third eccentric member comprises a thread lifting cam installed on the cabinet wall, a transmission rod is hingedly connected to the thread lifting cam, and the other end of the transmission rod is sleeved on the thread lifting shaft and is in transmission connection with the thread lifting shaft.

[0007] The end profile of the cabinet towards the needle bar frame is a square structure, and a reinforcing rib is formed on the end profile and detachably fixed to the needle bar frame.

[0008] As a further elaboration of the above technical solutions:

[0009] In the above technical solutions, the thread lifting cam comprises a mounting disc and a cam body, the mounting disc is in transmission connection with the main shaft, the cam body is detachably fixed to the end of the mounting disc towards the inside of the cabinet, and is arranged in the cabinet through a bearing.

[0010] In the above technical solutions, one end of the cam body is provided with a sliding groove of annular structure and different axis with the main shaft, a guide column is slidably arranged in the sliding groove, and the guide column is detachably fixed to one end of the transmission rod.

[0011] In the above technical solutions, a C-shaped ring is further arranged on the mounting disc, a bolt is detachably arranged on the C-shaped ring, and the bolt is adjusted to lock the mounting disc on the main shaft.

[0012] In the above technical solutions, a protection door plate, a protection chamfer and an oil storage groove are further formed on the cabinet: the protection door plate is movably arranged on the periphery of the mounting disc, the protection chamfer is arranged on the end of the cabinet towards the needle, and the oil storage groove is arranged on the upper end of the cabinet.

[0013] In the above technical solutions, the first eccentric member and the second eccentric member each comprise an eccentric wheel in transmission connection with the main shaft, one of the eccentric wheels is in transmission connection with the presser foot through a first transmission assembly, and the other eccentric wheel is in transmission connection with the needle through a second transmission assembly.

[0014] In the technical scheme, the first transmission assembly comprises a first eccentric swing lever, a first swing lever, a balance piece, a second swing lever, a third swing lever and a first sliding block; one end of the first eccentric swing lever is sleeved on the periphery of the eccentric wheel and is in transmission connection with the eccentric wheel, the other end extends to the side of the main shaft and is hinged to the balance piece, one end of the balance piece is hinged to the cabinet through a first positioning shaft, the other end is hinged to the first swing lever, the first swing lever, the second swing lever, the third swing lever and the first sliding block are sequentially hinged, the second swing lever is hinged to the cabinet through a second positioning shaft, the first sliding block is detachably and fixedly provided with the presser, the first sliding block is slidingly arranged on a Z-directionally extending vertical shaft, and the vertical shaft is detachably and fixedly arranged on the cabinet; the main shaft can drive the first eccentric swing lever to swing relative to the main shaft, drive the balance piece to deflect on the cabinet, and drive the first swing lever, the second swing lever and the third swing lever to swing through transmission of the balance piece, so as to drive the first sliding block to slide along the vertical shaft and drive the presser to slide on the needle rod.

[0015] In the technical scheme, the balance piece is formed with a first rotation structure, a second rotation structure and a third rotation structure arranged in parallel, the first rotation structure is hinged to the first eccentric swing lever, the second rotation structure is hinged to the first swing lever, and the third rotation structure is hinged to the first positioning shaft.

[0016] In the technical scheme, the second transmission assembly comprises a second eccentric swing lever, a fifth swing lever, a sixth swing lever and a second sliding block, the second eccentric swing lever is sleeved on the eccentric wheel and is in transmission connection with the eccentric wheel, one end of the second eccentric swing lever extends to the side of the main shaft and is hinged to the fifth swing lever, one end of the fifth swing lever is sleeved on the first positioning shaft and is hinged to the first positioning shaft, the other end is hinged to the sixth swing lever, the sixth swing lever is hinged to the second sliding block, and the second sliding block is slidingly arranged on the vertical shaft and is in transmission connection with the needle rod; the main shaft can drive the second eccentric swing lever to swing relative to the main shaft, drive the sixth swing lever to drive the second sliding block to slide along the vertical shaft through the fifth swing lever, and drive the needle rod and the needle on the needle rod to move linearly back and forth.

[0017] In the above technical scheme, the two eccentric wheels are symmetrically arranged on the main shaft; the first transmission assembly comprises a first eccentric swing lever, a seventh swing lever, an eighth swing lever, a ninth swing lever and a third sliding block which are sequentially hinged; one end of the first eccentric swing lever is matched and arranged on the periphery of the eccentric wheel and is in transmission connection with the eccentric wheel, and the other end extends to the side of the main shaft and is hinged with the seventh swing lever; one end of the seventh swing lever is hinged with the machine box through a third positioning shaft, and the other end is hinged with the eighth swing lever; the ninth swing lever is hinged with the machine box through a fourth positioning shaft; the third sliding block is slidably arranged on the needle rod and is detachably fixed with the presser foot; the main shaft can drive the first eccentric swing lever to swing relative to the main shaft, drive the seventh swing lever to deflect on the machine box, and drive the eighth swing lever and the ninth swing lever to swing to drive the third sliding block to slide along the needle rod, so as to drive the presser foot to slide on the needle rod.

[0018] Compared with the prior art, the utility model has the advantages that the thread tensioning cam is arranged on the outer wall of the machine box, the working state of the embroidery thread guide driving mechanism can be checked at any time by opening the protective door plate on the machine box in the normal working state, the frequency of thread breakage and thread jam caused by the transmission mechanism failure is reduced, the operation is convenient and fast, the downtime and maintenance time of the embroidery machine can be obviously reduced, and the production efficiency of the embroidery machine is improved; the balance member connected with the second transmission assembly through the first positioning shaft is arranged on the first transmission assembly, or the two eccentric wheels are symmetrically arranged on the main shaft, so that the two transmission assemblies are connected and influenced, the resonance phenomenon of the two transmission mechanisms is slowed down or slowed down, the overall stability of the machine head is improved, and the purpose of ensuring the embroidery quality and being silent under the high-speed operation of the main shaft is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a side view of the first embodiment;

[0020] Figure 2 is a structure schematic view of the first embodiment after removing the machine box;

[0021] Figure 3 is an exploded structure schematic view of the main shaft and the eccentric member thereon in the first embodiment; (the bearing is not shown)

[0022] Figure 4 is a structure schematic view of the machine box in the first embodiment;

[0023] Figure 5 is a structure schematic view of the first transmission assembly and the second transmission assembly in the first embodiment; (the bearing is not shown)

[0024] Figure 6 is an exploded structure schematic view of the first transmission assembly and the second transmission assembly in the first embodiment;

[0025] Figure 7 is a structural schematic view of the balancing member in the first embodiment;

[0026] Figure 8 is a structural schematic view of the first transmission assembly in the second embodiment.

[0027] In the figure: 20, the machine case; 30, the first eccentric member; 40, the second eccentric member; 50, the third eccentric member; 51, the thread lifting cam; 511, the mounting disc; 512, the cam body; 52, the transmission rod; 513, the C-shaped ring; 60, the first transmission assembly; 61, the first eccentric swing rod; 62, the first swing rod; 63, the balancing member; 64, the second swing rod; 65, the third swing rod; 66, the first sliding block; 67, the seventh swing rod; 68, the eighth swing rod; 69, the ninth swing rod; 70, the second transmission assembly; 71, the second eccentric swing rod; 72, the fifth swing rod; 73, the sixth swing rod; 74, the second sliding block; 1, the main shaft; 2, the thread lifting shaft; 3, the presser foot; 4, the needle; 5, the thread lifting rod; 6, the reinforcing rib; 7, the sliding groove; 8, the protection door plate; 9, the protection chamfer; 10, the oil storage groove; 11, the eccentric wheel; 12, the first positioning shaft; 13, the second positioning shaft; 14, the first rotary structure; 15, the second rotary structure; 16, the third rotary structure; 17, the vertical shaft; 18, the third sliding block; 19, the third positioning shaft; 21, the fourth positioning shaft; 22, the needle bar holder; 23, the needle bar. DETAILED DESCRIPTION

[0028] The utility model will be made further detailed description in combination with the drawings.

[0029] The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships as shown in the drawings, and are merely used for the purpose of ease of description and simplification of the description, and do not indicate or imply that the device or element indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are used only for the purpose of description and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Thus, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, can be electrical connection; can be direct connection, can be indirect connection through an intermediate medium, or can be internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature with respect to the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature with respect to the second feature include the first feature above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The "lower", "lower" and "lower" of the first feature with respect to the second feature include the first feature below and obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0030] As Figures 1-2As shown in the figure, a head structure of a high-speed embroidery machine, the head includes a machine box 20 and a needle bar frame 22 arranged on a machine frame, the machine box 20 is arranged with a main shaft 1 and a thread tension shaft 2, the main shaft 1 is drivingly connected with a driving device and sequentially arranged with a first eccentric member 30, a second eccentric member 40 and a third eccentric member 50 drivingly connected therewith, the first eccentric member 30 is drivingly connected with a presser foot 3 and can drive the linear reciprocating movement of the presser foot 3 to compress or loosen the cloth, the second eccentric member 40 is drivingly connected with a needle 4 and can drive the linear reciprocating movement of the needle 4 to pull the embroidery thread through or out of the cloth, the third eccentric member 50 can drive the rotation of the thread tension shaft 2 to pull the embroidery thread on the thread tension rod 5 on the thread tension shaft 2 to move forward on the needle bar frame 22, the needle 4 is arranged at the end of a needle bar 23 on the needle bar frame 22, and the presser foot 3 is slidingly sleeved on the needle bar 23.

[0031] As shown in the figure, Figure 3 The third eccentric member 50 includes a thread tension cam 51 arranged on the wall of the machine box 20, the thread tension cam 51 is hingedly connected with a transmission rod 52, the other end of the transmission rod 52 is sleeved on the thread tension shaft 2 and drivingly connected therewith.

[0032] In this embodiment, the thread tension cam 51 includes a mounting disc 511 and a cam body 512, the mounting disc 511 is drivingly connected with the main shaft 1, the cam body 512 is detachably arranged on the end of the mounting disc 511 towards the inside of the machine box 20 and is arranged in the machine box 20 through a bearing; one end of the cam body 512 is arranged with a sliding groove 7 in an annular structure and coaxial with the main shaft 1, a guide column is slidingly arranged in the sliding groove 7, the guide column is detachably arranged on one end of the transmission rod 52; the mounting disc 511 is further arranged with a C-shaped ring 513, a bolt is detachably arranged on the C-shaped ring 513, the bolt can lock the mounting disc 511 on the main shaft 1; the machine box 20 is further formed with a protective door plate 8, a protective chamfer 9 and an oil storage groove 10: the protective door plate 8 is movably arranged on the periphery of the mounting disc 511, the protective chamfer 9 is arranged on the end of the machine box 20 towards the needle 4, and the oil storage groove 10 is arranged on the upper end of the machine box 20 to add lubricating oil to the transmission mechanism.

[0033] As shown in the figure, Figure 4 The end profile of the machine box 20 towards the needle bar frame 22 is in a square structure and is formed with a reinforcing rib 6, the reinforcing rib 6 is detachably and fixedly connected with the needle bar frame 22.

[0034] It can be understood that, as Figure 4As shown, compared with the traditional C-shaped cabinet 20, the utility model discloses a reinforcing rib 6 which can be detachably connected with the needle bar frame 22 is arranged at the connecting end of the cabinet 20 and the needle bar frame 22, the reinforcing rib 6 is integrally formed with the cabinet 20 and forms a closed direction frame structure at the end of the cabinet 20, which does not affect the layout of the structural components in the cabinet 20, but can obviously enhance the stability of the whole after the needle bar frame 22 is connected with the cabinet 20, effectively reduce the vibration of the cabinet 20 and the needle bar frame 2 when the main shaft 1 is running at high speed and eliminate the running noise, have the characteristics of quiet, and improve the displacement accuracy of the needle 4 and the presser foot 3, and auxiliary improve the embroidery quality, and the setting of the protective chamfer 9 is not only beautiful, but also can avoid or reduce the risk of accidental injury during the assembly, adjustment, maintenance process of the operator, and is safer to use.

[0035] In the embodiment, the thread tensioning cam 51 is arranged on the wall of the cabinet 20, compared with the conventional design that the thread tensioning cam 51 is arranged between the first eccentric member 30 and the second eccentric member 40, the utility model only needs to open the movable door plate 8 to check and maintain the transmission mechanism in the cabinet 20, which is convenient and fast, saves time and effort, can obviously reduce the fault downtime and maintenance time of the embroidery machine, and improves the production efficiency of the embroidery machine.

[0036] As shown in the drawings, Figure 5 As shown, the first eccentric member 30 and the second eccentric member 40 each include an eccentric wheel 11 which is in transmission connection with the main shaft 1, one eccentric wheel 11 is in transmission connection with the presser foot 3 through the first transmission assembly 60, and the other eccentric wheel 11 is in transmission connection with the needle 4 through the second transmission assembly 70.

[0037] As shown in the drawings, Figure 6 As shown in the drawings, As shown in the drawings,

[0038] As shown in the drawings, Figure 6As shown, the second transmission assembly 70 comprises a second eccentric swing lever 71, a fifth swing lever 72, a sixth swing lever 73 and a second sliding block 74. The second eccentric swing lever 71 is sleeved on the eccentric wheel 11 and in transmission connection with the eccentric wheel 11. One end of the second eccentric swing lever 71 extends to the side of the main shaft 1 and is hinged with the fifth swing lever 72. One end of the fifth swing lever 72 is sleeved on the first positioning shaft 12 and is hinged with the first positioning shaft 12. The other end of the fifth swing lever 72 is hinged with the sixth swing lever 73. The sixth swing lever 73 is hinged with the second sliding block 74. The second sliding block 74 is slidingly arranged on the vertical shaft 17 and is in transmission connection with the needle bar 23. The main shaft 1 can drive the second eccentric swing lever 71 to swing relative to the main shaft 1. The fifth swing lever 72 drives the sixth swing lever 73 to drive the second sliding block 74 to slide along the vertical shaft 17, so as to drive the needle bar 23 and the needle 4 thereon to move linearly back and forth.

[0039] As shown in Figure 7 As shown, the balancing member 63 is formed with a first rotation structure 14, a second rotation structure 15 and a third rotation structure 16 arranged in parallel. The first rotation structure 14 is hinged with the first eccentric swing lever 61. The second rotation structure 15 is hinged with the first swing lever 62. The third rotation structure 16 is hinged with the first positioning shaft 12.

[0040] It can be understood that the balancing member 63 can play a role of a counterweight, slow down the resonance between the two transmission mechanisms, and avoid or slow down the resonance phenomenon between the first eccentric swing lever 61 and the subsequent transmission member in the first transmission assembly 60. Since the balancing member 63 is connected with the fifth swing lever 72 (i.e. the second transmission assembly 70) through the first positioning shaft 12 arranged on the machine box 20, the constraint and stable connection between the two transmission assemblies can be further strengthened, the resonance phenomenon between the two transmission assemblies can be slowed down, and the overall stability of the machine head can be improved. In the embodiment, the three rotation structures are through holes. The balancing member 63 is rotationally connected with the first eccentric swing lever 61 and the first swing lever 62 through a pin or a bearing. In application, the rotation structure can be a rotating shaft or a through hole according to the actual structure layout in the machine box 20.

[0041] When working, the main shaft 1 drives the two eccentric wheels 11 to rotate synchronously, and due to the eccentric angle difference of the two eccentric wheels, the two transmission assemblies are used to realize the transmission of the presser foot 3 to press the cloth first and then the needle 4 to hook the embroidery thread to pass through the cloth to carry out embroidery. The specific action process is as follows: the main shaft 1 drives the two eccentric wheels 11 to drive the first eccentric swing rod 61 and the second eccentric swing rod 71 to swing respectively, the first eccentric swing rod 61 drives the balance piece 63 to deflect on the machine box 20, drives the first swing rod 62 to swing, the first swing rod 62 pulls the second swing rod 64 to deflect, the second swing rod 64 pulls the third swing rod 65 to drive the second sliding block 66 to slide on the vertical shaft 17, drives the presser foot 3 on the needle rod 23 to slide to press the cloth below the needle 4; synchronously, the second eccentric swing rod 71 drives the fifth swing rod 72 to swing, due to the constraint of the first positioning shaft 12 (balance piece 63) on the machine box 20 at one end, the other end part rotates relative to the machine box 20, and drives the sixth swing rod 73 to pull the second sliding block 74 to slide on the vertical shaft 17, drives the needle rod 23 to drive the needle to translate up and down relative to the cloth and the presser foot 3 to carry out the embroidery action.

[0042] As shown in Figure 8 In another embodiment of the utility model, the two eccentric wheels 11 are symmetrically arranged on the main shaft 1, the first transmission assembly 60 includes the first eccentric swing rod 61, the seventh swing rod 67, the eighth swing rod 68, the ninth swing rod 69 and the third sliding block 18 sequentially hinged: one end of the first eccentric swing rod 61 is matched and arranged on the periphery of the eccentric wheel 11 and is transmissionally connected with it, the other end extends to the side of the main shaft 1 and is hinged with the seventh swing rod 67, one end of the seventh swing rod 67 is hinged with the machine box 20 through the third positioning shaft 19, the other end is hinged with the eighth swing rod 68, the ninth swing rod 69 is hinged with the machine box 20 through the fourth positioning shaft 21, the third sliding block 18 is slidably arranged on the needle rod 23 and is detachably fixedly connected with the presser foot 3, the fifth swing rod 72 is arranged on the third positioning shaft 19 and is hinged with it; the main shaft 1 can drive the first eccentric swing rod 61 to swing relative to it, drives the seventh swing rod 67 to deflect on the machine box 20, and drives the eighth swing rod 68 and the ninth swing rod 69 to swing to drive the third sliding block 18 to drive the presser foot 3 to slide on the needle rod 23.

[0043] The above is not any limitation on the technical range of the utility model, and any modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiments still belong to the range of the technical scheme of the utility model.

Claims

1. A head structure for a high-speed embroidery machine, the head comprising a housing and a needle bar frame mounted on a frame, the housing containing a main shaft and a take-up shaft, the main shaft being driven by a drive device and having a first eccentric member, a second eccentric member, and a third eccentric member sequentially arranged thereon, the first eccentric member being driven by a presser foot and capable of driving its linear reciprocating motion to press or release the fabric, the second eccentric member being driven by a needle and capable of driving its linear reciprocating motion to pull the embroidery thread through or out of the fabric, the third eccentric member being capable of driving the take-up shaft to rotate to pull the take-up lever thereon, causing the embroidery thread thereon to move forward on the needle bar frame, the needle being disposed at the end of the needle bar on the needle bar frame, and the presser foot being slidably sleeved on the needle bar; characterized in that: The third eccentric component includes a wire-taking cam mounted on the wall of the machine casing. A transmission rod is hinged to the wire-taking cam, and the other end of the transmission rod is sleeved on the wire-taking shaft and connected to it in a transmission manner. The outer contour of the end of the chassis facing the needle bar frame is a square structure with reinforcing ribs formed thereon, and the reinforcing ribs are detachably fixed to the needle bar frame.

2. The head structure of a high-speed embroidery machine according to claim 1, characterized in that, The wire-picking cam includes a mounting plate and a cam body. The mounting plate is connected to the main shaft for transmission. The cam body is detachably fixed on the end of the mounting plate facing the inside of the machine housing and is mounted inside the machine housing by bearings.

3. The head structure of a high-speed embroidery machine according to claim 2, characterized in that, One end of the cam body is provided with an annular groove that is not coaxial with the main shaft. A guide post is slidably installed in the groove, and the guide post is detachably fixed to one end of the transmission rod.

4. The head structure of a high-speed embroidery machine according to claim 2, characterized in that, The mounting plate is also provided with a C-shaped ring, and a bolt is detachably fixed on the C-shaped ring. By adjusting the bolt, the mounting plate can be locked onto the main shaft.

5. The head structure of a high-speed embroidery machine according to claim 2, characterized in that, The chassis also has a protective door panel, a protective chamfer, and an oil reservoir: the protective door panel is movably mounted on the periphery of the mounting plate, the protective chamfer is located on the end of the chassis facing the needle, and the oil reservoir is located at the upper end of the chassis.

6. The head structure of a high-speed embroidery machine according to any one of claims 1-5, characterized in that, The first eccentric component and the second eccentric component each include an eccentric wheel that is drivenly connected to the main shaft. One eccentric wheel is drivenly connected to the presser foot through a first transmission assembly, and the other eccentric wheel is drivenly connected to the needle through a second transmission assembly.

7. The head structure of a high-speed embroidery machine according to claim 6, characterized in that, The first transmission assembly includes a first eccentric rocker arm, a first rocker arm, a balancer, a second rocker arm, a third rocker arm, and a first slider. One end of the first eccentric rocker arm is sleeved around the eccentric wheel and connected to it for transmission. The other end extends to the side of the main shaft and is hinged to the balancer. One end of the balancer is hinged to the housing via a first positioning shaft, and the other end is hinged to the first rocker arm. The first rocker arm, the second rocker arm, the third rocker arm, and the first slider are sequentially hinged in pairs. The second rocker arm is hinged to the housing via a second positioning shaft. The pressure foot is detachably fixed on the first slider. The first slider is slidably mounted on a vertical shaft extending in the Z direction. The vertical shaft is detachably fixed to the housing. The main shaft can drive the first eccentric rocker arm to oscillate relative to it, and drive the balancer to deflect on the housing. Through the balancer, the first rocker arm, the second rocker arm, and the third rocker arm are oscillated to drive the first slider to slide along the vertical shaft, thereby driving the pressure foot to slide on the needle bar.

8. The head structure of a high-speed embroidery machine according to claim 7, characterized in that, The balancing component has a first rotary structure, a second rotary structure, and a third rotary structure arranged in parallel. The first rotary structure is hinged to the first eccentric rocker arm, the second rotary structure is hinged to the first rocker arm, and the third rotary structure is hinged to the first positioning shaft.

9. The head structure of a high-speed embroidery machine according to claim 7, characterized in that, The second transmission assembly includes a second eccentric rocker arm, a fifth rocker arm, a sixth rocker arm, and a second slider. The second eccentric rocker arm is sleeved on the eccentric wheel and connected to it in a transmission manner. One end of the second eccentric rocker arm extends to the side of the main shaft and is hinged to the fifth rocker arm. One end of the fifth rocker arm is sleeved on the first positioning shaft and hinged to it, and the other end is hinged to the sixth rocker arm. The sixth rocker arm is hinged to the second slider. The second slider is slidably mounted on the vertical shaft and is connected to the needle bar in a transmission manner. The main shaft can drive the second eccentric rocker arm to oscillate relative to it, and through the fifth rocker arm, drive the sixth rocker arm to drive the second slider to slide along the vertical shaft, so as to drive the needle bar and the needle on it to move linearly back and forth.

10. The head structure of a high-speed embroidery machine according to claim 6, characterized in that, The two eccentric wheels are symmetrically mounted on the main shaft; the first transmission assembly includes a first eccentric rocker arm, a seventh rocker arm, an eighth rocker arm, a ninth rocker arm, and a third slider, which are sequentially hinged: one end of the first eccentric rocker arm is fitted around the eccentric wheel and connected to it for transmission, and the other end extends to the side of the main shaft and is hinged to the seventh rocker arm; one end of the seventh rocker arm is hinged to the housing through a third positioning shaft, and the other end is hinged to the eighth rocker arm; the ninth rocker arm is hinged to the housing through a fourth positioning shaft; the third slider is slidably fitted on the needle bar and detachably fixed to the presser foot; the main shaft can drive the first eccentric rocker arm to oscillate relative to it, and drive the seventh rocker arm to deflect on the housing, and through it drive the eighth and ninth rocker arms to oscillate so as to drive the third slider to slide along the needle bar, so as to drive the presser foot to slide on the needle bar.

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