Needle bar driving mechanism of high-speed computerized embroidery machine

Abstract

The utility model relates to a needle bar drive mechanism of high -speed computerized embroidery machine. Involve computerized embroidery machine technical field. The present application specifically includes the needle bar assembly in the needle bar frame, the needle bar guide piece on the needle bar frame and the needle bar drive assembly in the machine head, is equipped with needle bar drive connecting pin in the needle bar assembly, is equipped with needle bar driver in the needle bar drive assembly, and the needle bar drive connecting pin is inserted with needle bar driver and plugs together. The utility model through needle bar drive connecting pin and needle bar driver plug together, thereby in the process that needle bar driver moves along vertical direction, through needle bar drive connecting pin drive needle bar assembly synchronous along vertical direction moves, and through needle bar guide piece to the vertical direction movement of needle bar assembly is oriented, and then reduce the load of needle bar drive mechanism, and promote the stability of needle bar operation, make it applicable in high -speed computerized embroidery machine.

Description

Technical Field

[0001] This utility model relates to the field of computerized embroidery machine technology, and in particular to a high-speed computerized embroidery machine. Needle bar drive mechanism. Background Technology

[0002] Computerized embroidery machines are widely used in embroidery operations due to their advantages such as high embroidery speed, high efficiency, high quality, and ease of operation, as well as their ability to create richly colored and complex embroidery patterns. A typical computerized embroidery machine includes a machine head mounted on a frame, a needle bar frame that can move laterally on the machine head, several needle bars that can move vertically on the needle bar frame, a color-changing mechanism that drives the needle bar frame to move laterally to select a needle bar for operation, and a needle bar drive mechanism that connects to and drives the selected needle bar to move vertically.

[0003] Traditional computerized embroidery machines typically have a presser foot mounted on the needle bar, with a presser foot spring between the presser foot and the needle bar. During embroidery, the rotation of the main shaft drives the needle bar drive mechanism, which in turn drives the needle bar downwards. Simultaneously, the presser foot spring pushes downwards, pressing it firmly against the fabric, thus completing the embroidery and fabric pressing actions. When the needle bar detaches from the fabric and rises, the presser foot also rises accordingly.

[0004] The above-mentioned needle bar drive mechanism has the following problems: 1. Since the needle bar drive mechanism drives both the needle bar and the presser foot at the same time, the load is large, which affects the running speed of the computer embroidery machine; 2. The stability of the needle bar drive mechanism in driving the needle bar is poor, and it cannot be used in high-speed computer embroidery machines. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a needle bar drive mechanism for a high-speed computerized embroidery machine, which can reduce the load on the needle bar drive mechanism and improve the stability of needle bar operation, thereby making it suitable for use in high-speed computerized embroidery machines.

[0006] This utility model proposes a needle bar drive mechanism for a high-speed computerized embroidery machine, including a needle bar assembly disposed in a needle bar frame, a needle bar guide disposed on the needle bar frame, and a needle bar drive assembly disposed in the machine head. The needle bar assembly is provided with a needle bar drive connecting pin, and the needle bar drive assembly is provided with a needle bar driver. The needle bar drive connecting pin is inserted and engaged with the needle bar driver, so that as the needle bar driver moves in the vertical direction, it drives the needle bar assembly to move synchronously in the vertical direction. The needle bar guide guides the vertical movement of the needle bar assembly.

[0007] Furthermore, the needle bar assembly includes a needle bar shaft that extends vertically through the needle bar frame, and a needle located at the bottom of the needle bar shaft. The needle bar drive connecting pin is fixedly sleeved on the needle bar shaft. As the needle bar drive connecting pin moves vertically, it drives the needle bar shaft and the needle to move synchronously in the vertical direction.

[0008] Furthermore, a slot is provided on one side of the needle bar driver, and the needle bar drive connecting pin includes a connecting pin body fixedly sleeved on the needle bar shaft, and an insertion part provided on one side of the connecting pin body, the insertion part being inserted into the slot.

[0009] Furthermore, the needle bar guide is a needle bar guide plate fixedly installed on the needle bar frame. The needle bar guide plate is provided with a guide hole extending in the vertical direction. The needle bar drive connecting pin also includes a guide post provided on the other side of the connecting pin body. The guide post is slidably engaged with the guide hole.

[0010] Furthermore, the needle bar assembly also includes a needle bar spring cap disposed at the top of the needle bar shaft, a movable washer movably sleeved on the outside of the needle bar shaft, and a needle bar spring disposed between the needle bar spring cap and the movable washer. One end of the needle bar spring abuts against the needle bar spring cap, and the other end abuts against the movable washer, so as to abut the movable washer against the needle bar frame.

[0011] Furthermore, the needle bar assembly also includes a positioning pad fixedly sleeved on the needle bar shaft, and a positioning spring located between the positioning pad and the needle bar drive connecting pin, one end of the positioning spring abutting against the positioning pad and the other end abutting against the needle bar drive connecting pin.

[0012] Furthermore, the needle bar drive assembly includes a needle bar active assembly disposed in the machine head, and a guide rod extending vertically in the machine head. The needle bar driver is disposed on the guide rod, and the needle bar active assembly is connected to the needle bar driver to drive the needle bar driver to perform up-and-down reciprocating motion along the guide rod.

[0013] Furthermore, the needle bar active assembly includes an active shaft that extends laterally through the machine head, a drive cam assembly disposed on the active shaft, a three-eye linkage assembly connected to the drive cam assembly, and a linkage assembly with one end connected to the three-eye linkage assembly and the other end connected to the needle bar driver.

[0014] Furthermore, the three-eye connecting rod assembly includes a three-eye connecting rod, a first eye pin at the tail end of the three-eye connecting rod, a first bearing between the first eye pin and the three-eye connecting rod, a second eye pin at the middle of the three-eye connecting rod, a second bearing between the second eye pin and the three-eye connecting rod, and a third eye pin at the head end of the three-eye connecting rod. The first eye pin is fixedly connected to the machine head, the second eye pin is fixedly connected to the drive cam assembly, and one end of the connecting rod assembly is rotatably connected to the third eye pin and the other end is rotatably connected to the needle bar driver.

[0015] Furthermore, the linkage assembly includes a drive linkage, a third bearing member disposed at one end of the drive linkage, and a fourth bearing member disposed at the other end of the drive linkage. The third bearing member is sleeved on the third eye pin. The needle bar driver is provided with a connecting shaft, and the fourth bearing member is sleeved on the connecting shaft.

[0016] The needle bar drive mechanism for a high-speed computerized embroidery machine proposed in this utility model has the following beneficial effects: (1) This mechanism is connected to the needle bar driver by the needle bar drive connecting pin. As the needle bar driver moves in the vertical direction, the needle bar assembly moves synchronously in the vertical direction by the needle bar drive connecting pin. The needle bar guide guides the vertical movement of the needle bar assembly, thereby reducing the load on the needle bar drive mechanism and improving the stability of the needle bar operation, making it suitable for high-speed computer embroidery machines.

[0017] (2) The insertion part on one side of the connecting pin body of this mechanism is inserted into the slot on one side of the needle bar driver, so that during the process of the needle bar driver moving in the vertical direction, the needle bar shaft and the needle move synchronously in the vertical direction through the needle bar drive connecting pin, thereby realizing the independent drive of the needle bar assembly, reducing the load of the needle bar drive assembly, and increasing the running speed of the computer embroidery machine. (3) The needle bar guide component of this mechanism is a needle bar guide plate fixedly installed on the needle bar frame. The needle bar guide plate is provided with a guide hole extending in the vertical direction. The needle bar drive connecting pin also includes a guide post. The guide post is set on the other side of the connecting pin body. Thus, through the sliding cooperation between the guide post and the guide hole, the guide hole guides the vertical movement of the needle bar shaft, thereby improving the stability of the needle bar assembly operation and enabling it to be applied in high-speed computer embroidery machines. (4) When the needle bar driver drives the needle bar shaft to move vertically through the needle bar drive connecting pin, the needle bar spring buffers and dampens the vertical movement of the needle bar shaft, thereby improving the stability of the vertical movement of the needle bar assembly and enabling it to be applied in high-speed computer embroidery machines. (5) This mechanism sets a positioning spring between the positioning pad and the needle bar drive connecting pin, thereby providing a pre-tightening force for fixing the positioning pad and the needle bar drive connecting pin on the needle bar shaft through the positioning spring, preventing the positioning pad and the needle bar drive connecting pin from loosening on the needle bar shaft, thereby improving the stability of the needle bar assembly structure and making it suitable for use in high-speed computer embroidery machines; (6) The needle bar drive assembly of this mechanism includes a needle bar active assembly and a guide rod. The needle bar active assembly is connected to the needle bar driver and drives the needle bar driver to move up and down along the guide rod. The guide rod guides the needle bar driver, thereby enhancing the stability of the needle bar driver in the vertical direction, and further enhancing the stability of the needle bar assembly in the vertical direction, making it suitable for high-speed computer embroidery machines. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements.

[0019] Figure 1 This is a schematic diagram of the needle bar drive mechanism of a high-speed computerized embroidery machine according to an embodiment of the present utility model; Figure 2 An exploded view of the needle bar guide plate installed on the needle bar frame of a needle bar drive mechanism for a high-speed computerized embroidery machine according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the needle bar assembly of a needle bar drive mechanism for a high-speed computerized embroidery machine according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the needle bar drive assembly of a high-speed computerized embroidery machine in the machine head, according to an embodiment of the present invention. Figure 5 This is a schematic diagram showing the connection between the needle bar active component and the needle bar driver in a needle bar drive mechanism of a high-speed computerized embroidery machine according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the three-eye linkage assembly of the needle bar drive mechanism of a high-speed computerized embroidery machine according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the connecting rod assembly of the needle bar drive mechanism of a high-speed computer embroidery machine according to an embodiment of the present invention. Figure 8 This is a schematic diagram of the needle bar driver of a high-speed computerized embroidery machine according to an embodiment of the present invention.

[0020] In the diagram: 1. Needle bar holder; 2. Needle bar assembly; 21. Needle bar drive connecting pin; 211. Connecting pin body; 212. Insertion part; 213. Guide post; 22. Needle bar shaft; 23. Needle; 24. Needle bar spring cap; 25. Movable washer; 26. Needle bar spring; 27. Positioning washer; 28. Positioning spring; 3. Needle bar guide plate; 31. Guide hole; 4. Machine head; 5. Needle bar drive assembly; 51. Needle bar driver; 511. Groove; 512. Connecting shaft; 52. Needle bar active assembly; 521. Drive cam assembly; 522. Three-eye connecting rod assembly; 5221. Three-eye connecting rod; 5222. First eye pin; 5223. First bearing component; 5224. Second eye pin; 5225. Second bearing component; 5226. Third eye pin; 523. Connecting rod assembly; 5231. Drive connecting rod; 5232. Third bearing component; 5233. Fourth bearing component; 53. Guide rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1 to 8 This utility model discloses a needle bar drive mechanism for a high-speed computerized embroidery machine, comprising a needle bar assembly 2 and a needle bar drive component 5. The needle bar assembly 2 is disposed in the needle bar frame 1 of the computerized embroidery machine, and the needle bar drive component 5 is disposed in the machine head 4 of the computerized embroidery machine. A needle bar drive connecting pin 21 is provided in the needle bar assembly 2, and a needle bar driver 51 is provided in the needle bar drive component 5.

[0023] The needle bar drive connecting pin 21 is inserted and engaged with the needle bar driver 51, so that when the needle bar driver 51 moves in the vertical direction, the needle bar assembly 2 is driven to move synchronously in the vertical direction through the needle bar drive connecting pin 21, thereby realizing the embroidery action of the computer embroidery machine.

[0024] Since no pressure foot is provided on the needle bar assembly 2 in this application, the needle bar drive assembly 5 drives the needle bar assembly 2 to move in the vertical direction alone, thereby reducing the load on the needle bar drive assembly 5 and increasing the operating speed of the computer embroidery machine.

[0025] In this application, the needle bar holder 1 is also provided with a needle bar guide. When the needle bar assembly 2 moves vertically under the drive of the needle bar drive assembly 5, the needle bar guide guides the vertical movement of the needle bar assembly 2, thereby improving the stability of the operation of the needle bar assembly 2 and enabling it to be used in high-speed computer embroidery machines.

[0026] Specifically, in this embodiment, the needle bar assembly 2 includes a needle bar shaft 22 and a needle 23. The needle bar shaft 22 extends vertically through the needle bar frame 1, and the needle 23 is disposed at the bottom of the needle bar shaft 22. A needle bar drive connecting pin 21 is fixedly sleeved on the needle bar shaft 22. Thus, when the needle bar driver 51 drives the needle bar drive connecting pin 21 to move vertically, the needle bar shaft 22 and the needle 23 move synchronously vertically. The vertical movement of the needle 23 then completes the embroidery action of the computerized embroidery machine.

[0027] Specifically, in this embodiment, the needle bar driver 51 has a slot 511 on one side, and the needle bar drive connecting pin 21 includes a connecting pin body 211 and a plug part 212. The connecting pin body 211 is fixedly sleeved on the needle bar shaft 22, and the plug part 212 is disposed on one side of the connecting pin body 211.

[0028] The insertion part 212 on one side of the connecting pin body 211 is inserted into the slot 511 on one side of the needle bar driver 51, so that when the needle bar driver 51 moves in the vertical direction, the needle bar shaft 22 and the needle 23 move synchronously in the vertical direction through the needle bar drive connecting pin 21, thereby realizing the independent drive of the needle bar assembly 2, reducing the load on the needle bar drive assembly 5, and increasing the operating speed of the computer embroidery machine.

[0029] Specifically, in this embodiment, the needle bar guide is a needle bar guide plate 3 fixedly installed on the needle bar frame 1. The needle bar guide plate 3 is provided with a guide hole 31 extending in the vertical direction. The needle bar drive connecting pin 21 also includes a guide post 213, which is located on the other side of the connecting pin body 211.

[0030] When the needle bar shaft 22 passes through the needle bar frame 1 in the vertical direction, the guide post 213 is inserted into the guide hole 31 on the needle bar guide plate 3. Thus, through the sliding cooperation between the guide post 213 and the guide hole 31, the guide hole 31 guides the vertical movement of the needle bar shaft 22, thereby improving the stability of the needle bar assembly 2 and enabling it to be used in high-speed computer embroidery machines.

[0031] It is foreseeable that, in this application, the guide hole 31 extends vertically on the needle bar guide plate 3, and the guide post 213 is inserted into the guide hole 31 to make the needle bar assembly 2 move vertically. As the needle bar assembly 2 moves vertically, the guide post 213 moves vertically in the guide hole 31. Therefore, the guide hole 31 also limits the vertical movement range of the needle bar assembly 2, thereby limiting the movement range of the needle 23 during embroidery and improving the embroidery accuracy of the computer embroidery machine.

[0032] Furthermore, in this embodiment, the needle bar assembly 2 also includes a needle bar spring cap 24, a movable washer 25, and a needle bar spring 26. The needle bar spring cap 24 is disposed on the top of the needle bar shaft 22, the movable washer 25 is movably sleeved on the outside of the needle bar shaft 22, and the needle bar spring 26 is located between the needle bar spring cap 24 and the movable washer 25, with one end abutting against the needle bar spring cap 24 and the other end abutting against the movable washer 25.

[0033] When the needle bar shaft 22 passes through the needle bar frame 1 in the vertical direction, the movable pad 25 abuts against the needle bar frame 1 under the elastic force of the needle bar spring 26. Thus, when the needle bar driver 51 drives the needle bar shaft 22 to move in the vertical direction through the needle bar drive connecting pin 21, the elastic deformation capability of the needle bar spring 26 buffers and dampens the vertical movement of the needle bar shaft 22, thereby improving the stability of the vertical movement of the needle bar assembly 2 and enabling it to be applied in high-speed computer embroidery machines.

[0034] Furthermore, in this embodiment, the needle bar assembly 2 also includes a positioning pad 27 and a positioning spring 28. The positioning pad 27 is fixedly sleeved on the needle bar shaft 22 and spaced apart from the needle bar drive connecting pin 21. The positioning spring 28 is located between the positioning pad 27 and the needle bar drive connecting pin 21, with one end abutting against the positioning pad 27 and the other end abutting against the needle bar drive connecting pin 21.

[0035] When the needle bar assembly 2 is installed in the upper needle bar frame 1, it abuts against the needle bar frame 1 through the positioning pad 27, thereby positioning the initial position of the needle bar assembly 2 in the needle bar frame 1. This initial position is also the maximum vertical height of the needle bar assembly 2 in the needle bar frame 1, thereby further limiting the movement range of the machine needle 23 and improving the embroidery accuracy of the computer embroidery machine.

[0036] When the positioning pad 27 and the needle bar drive connecting pin 21 are fixedly sleeved on the needle bar shaft 22, a positioning spring 28 is provided between the positioning pad 27 and the needle bar drive connecting pin 21. The positioning spring 28 provides a pre-tightening force for fixing the positioning pad 27 and the needle bar drive connecting pin 21 on the needle bar shaft 22, preventing the fixing of the positioning pad 27 and the needle bar drive connecting pin 21 on the needle bar shaft 22 from loosening, thereby improving the stability of the needle bar assembly 2 structure and making it suitable for use in high-speed computer embroidery machines.

[0037] Specifically, in this embodiment, the needle bar drive assembly 5 includes a needle bar active assembly 52 and a guide rod 53, wherein the needle bar active assembly 52 is disposed in the machine head 4, the guide rod 53 extends vertically in the machine head 4, and the needle bar driver 51 is disposed on the guide rod 53.

[0038] The needle bar active assembly 52 is connected to the needle bar driver 51, so that under the drive of the needle bar active assembly 52, the needle bar driver 51 moves up and down along the guide rod 53, thereby driving the needle bar assembly 2 to move in the vertical direction, realizing the independent drive of the needle bar assembly 2.

[0039] During this process, the guide rod 53 guides the vertical movement of the needle bar driver 51, thereby enhancing the stability of the vertical movement of the needle bar driver 51, which in turn enhances the stability of the vertical movement of the needle bar assembly 2, making it suitable for high-speed computer embroidery machines.

[0040] Specifically, in this embodiment, the needle bar active assembly 52 includes an active shaft (not shown in the figure), a drive cam assembly 521, a three-eye connecting rod assembly 522, and a connecting rod assembly 523. The active shaft passes through the machine head 4 laterally, the drive cam assembly 521 is disposed on the active shaft, and the three-eye connecting rod assembly 522 is connected to the drive cam assembly 521.

[0041] The drive cam assembly 521 is typically referred to as a cam four-piece set or simply a four-piece set, and its specific structure is based on existing technology. A cam connecting rod is provided in the drive cam assembly 521; when the drive shaft rotates, it drives the cam connecting rod to move. The three-eye connecting rod assembly 522 is connected to the cam connecting rod, thereby causing the three-eye connecting rod assembly 522 to oscillate when the cam connecting rod moves.

[0042] One end of the connecting rod assembly 523 is connected to the three-eye connecting rod assembly 522, and the other end is connected to the needle bar driver 51. Thus, when the three-eye connecting rod assembly 522 swings, the connecting rod assembly 523 drives the needle bar driver 51 to move up and down along the guide rod 53, and then the needle bar driver 51 drives the needle bar assembly 2 to move in the vertical direction, thereby realizing the independent driving of the needle bar assembly 2.

[0043] Specifically, in this embodiment, the three-eye linkage assembly 522 includes a three-eye linkage 5221, a first eye pin 5222, a first bearing 5223, a second eye pin 5224, and a second bearing 5225. The first eye pin 5222 is located at the tail end of the three-eye linkage 5221 and is rotatably connected to the three-eye linkage 5221 through the first bearing 5223. The second eye pin 5224 is located in the middle of the three-eye linkage 5221 and is rotatably connected to the three-eye linkage 5221 through the second bearing 5225.

[0044] The first eye pin 5222 is fixedly connected to the housing of the machine head 4, and the second eye pin 5224 is fixedly connected to the cam connecting rod of the drive cam assembly 521. Thus, when the cam connecting rod moves, the second eye pin 5224 drives the three eye connecting rod 5221 to swing around the axis of the first eye pin 5222.

[0045] The three-eye linkage assembly 522 also includes a third eye pin 5226, which is fixedly installed at the beginning of the three-eye linkage 5221. Therefore, when the three-eye linkage 5221 swings around the axis of the first eye pin 5222, it drives the third eye pin 5226 to swing synchronously around the axis of the first eye pin 5222.

[0046] One end of the connecting rod assembly 523 is rotatably connected to the third eye pin 5226 and the other end is rotatably connected to the needle bar driver 51. Thus, when the third eye pin 5226 swings around the axis of the first eye pin 5222, the connecting rod assembly 523 drives the needle bar driver 51 to reciprocate up and down along the guide rod 53.

[0047] Specifically, in this embodiment, the linkage assembly 523 includes a drive linkage 5231, a third bearing member 5232, and a fourth bearing member 5233. The third bearing member 5232 is disposed at one end of the drive linkage 5231, thereby achieving a rotatable connection between one end of the drive linkage 5231 and the third eye pin 5226 by sleeved the third bearing member 5232 on the third eye pin 5226.

[0048] The fourth bearing 5233 is disposed at the other end of the drive link 5231. A connecting shaft 512 is disposed on the needle bar driver 51. By sleeved the fourth bearing 5233 on the connecting shaft 512, the other end of the drive link 5231 is rotatably connected to the needle bar driver 51. Thus, when the third eye pin 5226 swings around the axis of the first eye pin 5222, the drive link 5231 drives the needle bar driver 51 to reciprocate up and down along the guide rod 53.

[0049] Specifically, in this application, in actual implementation, the first bearing component 5223, the second bearing component 5225, the third bearing component 5232 and the fourth bearing component 5233 can all be deep groove ball bearings.

[0050] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A needle bar drive mechanism for a high-speed computerized embroidery machine, characterized in that: The device includes a needle bar assembly (2) located in a needle bar holder (1), a needle bar guide located on the needle bar holder (1), and a needle bar drive assembly (5) located in a machine head (4). The needle bar assembly (2) is provided with a needle bar drive connecting pin (21), and the needle bar drive assembly (5) is provided with a needle bar driver (51). The needle bar drive connecting pin (21) is inserted into the needle bar driver (51), thereby driving the needle bar assembly (2) to move synchronously in the vertical direction as the needle bar driver (51) moves in the vertical direction. The needle bar guide guides the vertical movement of the needle bar assembly (2).

2. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 1, characterized in that: The needle bar assembly (2) includes a needle bar shaft (22) that passes through the needle bar frame (1) in a vertical direction, and a needle (23) located at the bottom of the needle bar shaft (22). The needle bar drive connecting pin (21) is fixedly sleeved on the needle bar shaft (22). During the process of the needle bar drive connecting pin (21) moving in a vertical direction, it drives the needle bar shaft (22) and the needle (23) to move synchronously in a vertical direction.

3. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 2, characterized in that: The needle bar driver (51) has a slot (511) on one side. The needle bar drive connecting pin (21) includes a connecting pin body (211) fixedly sleeved on the needle bar shaft (22) and an insertion part (212) provided on one side of the connecting pin body (211). The insertion part (212) is inserted into the slot (511).

4. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 3, characterized in that: The needle bar guide is a needle bar guide plate (3) fixedly installed on the needle bar frame (1). The needle bar guide plate (3) is provided with a guide hole (31) extending in the vertical direction. The needle bar drive connecting pin (21) also includes a guide post (213) provided on the other side of the connecting pin body (211). The guide post (213) is slidably engaged with the guide hole (31).

5. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 2, characterized in that: The needle bar assembly (2) further includes a needle bar spring cap (24) disposed on the top of the needle bar shaft (22), a movable pad (25) movably sleeved on the outside of the needle bar shaft (22), and a needle bar spring (26) disposed between the needle bar spring cap (24) and the movable pad (25). One end of the needle bar spring (26) abuts against the needle bar spring cap (24) and the other end abuts against the movable pad (25) to abut against the needle bar frame (1).

6. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 2, characterized in that: The needle bar assembly (2) further includes a positioning pad (27) fixedly sleeved on the needle bar shaft (22), and a positioning spring (28) located between the positioning pad (27) and the needle bar drive connecting pin (21). One end of the positioning spring (28) abuts against the positioning pad (27), and the other end abuts against the needle bar drive connecting pin (21).

7. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 1, characterized in that: The needle bar drive assembly (5) includes a needle bar active assembly (52) disposed in the machine head (4) and a guide rod (53) extending vertically in the machine head (4). The needle bar driver (51) is disposed on the guide rod (53). The needle bar active assembly (52) is connected to the needle bar driver (51) to drive the needle bar driver (51) to reciprocate up and down along the guide rod (53).

8. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 7, characterized in that: The needle bar active assembly (52) includes an active shaft that runs laterally through the head (4), a drive cam assembly (521) disposed on the active shaft, a three-eye linkage assembly (522) connected to the drive cam assembly (521), and a linkage assembly (523) with one end connected to the three-eye linkage assembly (522) and the other end connected to the needle bar driver (51).

9. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 8, characterized in that: The three-eye connecting rod assembly (522) includes a three-eye connecting rod (5221), a first eye pin (5222) located at the tail end of the three-eye connecting rod (5221), a first bearing member (5223) located between the first eye pin (5222) and the three-eye connecting rod (5221), a second eye pin (5224) located in the middle of the three-eye connecting rod (5221), and a bearing member (5223) located between the second eye pin (5224) and the three-eye connecting rod (5221). The second bearing component (5225) between the three-eye connecting rod (5221) and the third eye pin (5226) located at the first end of the three-eye connecting rod (5221), the first eye pin (5222) is fixedly connected to the machine head (4), the second eye pin (5224) is fixedly connected to the drive cam assembly (521), one end of the connecting rod assembly (523) is rotatably connected to the third eye pin (5226), and the other end is rotatably connected to the needle bar driver (51).

10. The needle bar drive mechanism of a high-speed computerized embroidery machine as described in claim 9, characterized in that: The linkage assembly (523) includes a drive linkage (5231), a third bearing (5232) disposed at one end of the drive linkage (5231), and a fourth bearing (5233) disposed at the other end of the drive linkage (5231). The third bearing (5232) is sleeved on the third eye pin (5226). The needle bar driver (51) is provided with a connecting shaft (512), and the fourth bearing (5233) is sleeved on the connecting shaft (512).

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