Automatic embroidery machine

Abstract

The invention discloses an automatic embroidery machine, which comprises a composite driving assembly and a height adjusting assembly, the composite driving assembly can drive a machine needle, a needle nozzle and a presser foot to move up and down in a reciprocating manner during an embroidery period to carry out automatic embroidery, and the height adjusting assembly can lift the machine needle, the needle nozzle and the presser foot during a non-embroidery period to adjust the height of the machine needle, the needle nozzle and the presser foot. The composite driving assembly is matched with the height adjusting assembly, so that the automatic embroidery machine is smoothly switched between an embroidery time period and a non-embroidery time period, and the automation degree of the automatic embroidery machine is improved.

Description

Technical Field

[0001] This invention relates to the field of automated embroidery technology, and more particularly to an automatic embroidery machine. Background Technology

[0002] Embroidery machines embroider fabrics through reciprocating thread-feeding and piercing actions. Current embroidery machines rely heavily on manual operation and complex mechanical linkages, which limits embroidery efficiency, accuracy, and reliability. Furthermore, the height of the machine head needs to be manually adjusted repeatedly during the embroidery process to pick up and put down the fabric, making them inconvenient to use. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an automatic embroidery machine that can realize automated embroidery, has high embroidery efficiency, and facilitates the handling of fabric.

[0004] An automatic embroidery machine according to a first aspect of the present invention includes: The frame has a base extending in a first direction, a column extending upward from the front end of the base, and a machine arm extending in the first direction from the upper end of the column. A needle bar assembly is mounted on the machine arm, the needle bar assembly including a needle bar and a needle assembled at the lower end of the needle bar; A needle tip mechanism is mounted on the machine arm, and the needle tip mechanism includes a needle tip rod and a needle tip mounted on the lower end of the needle tip rod; A presser foot mechanism is mounted on the machine arm, and the presser foot mechanism includes a presser foot. A composite drive assembly is connected to the needle bar, the needle tip bar, and the presser foot, and is used to drive the needle, the needle tip, and the presser foot to reciprocate vertically during the embroidery period. The maximum heights at which the needle, the needle tip, and the presser foot are raised during the embroidery period are the first needle height, the first needle tip height, and the first presser foot height, respectively. A height adjustment assembly, connected to the needle bar, the needle tip bar, and the presser foot, is used to raise the needle, the needle tip, and the presser foot during non-embroidery periods. The maximum heights to which the needle, the needle tip, and the presser foot are raised during the non-embroidery periods are respectively the second needle height, the second needle tip height, and the second presser foot height, and: The height of the second needle is greater than the height of the first needle; and / or The height of the second needle tip is greater than the height of the first needle tip; and / or The height of the second presser foot is greater than the height of the first presser foot.

[0005] The automatic embroidery machine according to embodiments of the present invention has at least the following beneficial effects: During non-embroidery periods, the height adjustment component drives the needle rod, needle bar, and presser foot to rise, raising the needle, presser foot, and needle tip upwards and away from the work surface, increasing the space above the work surface to facilitate corresponding operations on the fabric, such as changing fabric or disassembling and assembling embroidery frames, without stopping the machine, resulting in high embroidery efficiency. After the fabric operation is completed, the height adjustment component drives the needle rod, needle bar, and presser foot to descend, bringing the needle tip, needle, and presser foot down to the initial embroidery position. This allows the composite drive component to drive the needle tip mechanism, needle bar assembly, and presser foot mechanism to move up and down reciprocally during embroidery periods, embroidering the fabric. This results in high embroidery efficiency. The transition between embroidery and non-embroidery periods is smooth between the composite drive component and the height adjustment component, leading to high automated embroidery efficiency.

[0006] An automated embroidery machine according to a second aspect of the present invention includes: The frame has a base extending in a first direction, a column extending upward from the front end of the base, and a machine arm extending in the first direction from the upper end of the column. A needle bar assembly is mounted on the machine arm, the needle bar assembly including a needle bar and a needle assembled at the lower end of the needle bar; A needle tip mechanism is mounted on the machine arm, and the needle tip mechanism includes a needle tip rod and a needle tip mounted on the lower end of the needle tip rod; A presser foot mechanism is mounted on the machine arm, and the presser foot mechanism includes a presser foot. A composite drive assembly is connected to the needle bar, the needle tip bar, and the presser foot, and is used to drive the needle, the needle tip, and the presser foot to reciprocate vertically during the embroidery period. The maximum heights at which the needle, the needle tip, and the presser foot are raised during the embroidery period are the first needle height, the first needle tip height, and the first presser foot height, respectively. A height adjustment assembly, connected to the needle bar, the needle tip bar, and the presser foot, is used to raise the needle, the needle tip, and the presser foot during non-embroidery periods. The maximum heights to which the needle, the needle tip, and the presser foot are raised during the non-embroidery periods are respectively the second needle height, the second needle tip height, and the second presser foot height, and: The height of the second needle is greater than the height of the first needle; and / or The height of the second needle tip is greater than the height of the first needle tip; and / or The height of the second presser foot is greater than the height of the first presser foot; Embroidery frame, used to hold the fabric to be embroidered; An embroidery frame driving device is provided, wherein the embroidery frame is connected to the embroidery frame driving device, and the embroidery frame driving device is used to drive the embroidery frame to move.

[0007] The embroidery frame driving device according to embodiments of the present invention has at least the following beneficial effects: The automated embroidery machine uses a composite drive component to drive the needle tip mechanism, needle bar assembly, and presser foot mechanism to move up and down reciprocally during the embroidery period to embroider the fabric, thus achieving automated embroidery. During non-embroidery periods, the height adjustment component raises the needle tip bar, needle bar, and presser foot to increase the space above the working surface, facilitating corresponding operations on the fabric. The transition between the composite drive component and the height adjustment component between the embroidery period and the non-embroidery period is smooth, resulting in high automated embroidery efficiency. The embroidery frame drive device drives the embroidery frame to move and continuously change the embroidery position on the fabric, making the embroidery pattern clear and continuous, thus improving the degree of automation of embroidery.

[0008] An embroidery machine according to a third aspect of the present invention includes: The frame has a base extending in a first direction, a column extending upward from the front end of the base, and a machine arm extending in the first direction from the upper end of the column. A needle bar assembly is mounted on the machine arm, the needle bar assembly including a needle bar and a needle assembled at the lower end of the needle bar; A needle tip mechanism is mounted on the machine arm, and the needle tip mechanism includes a needle tip rod and a needle tip mounted on the lower end of the needle tip rod; A presser foot mechanism is mounted on the machine arm, and the presser foot mechanism includes a presser foot. A composite drive assembly is connected to the needle bar, the needle tip bar, and the presser foot, and is used to drive the needle, the needle tip, and the presser foot to reciprocate vertically during the embroidery period. The maximum heights at which the needle, the needle tip, and the presser foot are raised during the embroidery period are the first needle height, the first needle tip height, and the first presser foot height, respectively. A height adjustment assembly, connected to the needle bar, the needle tip bar, and the presser foot, is used to raise the needle, the needle tip, and the presser foot during non-embroidery periods. The maximum heights to which the needle, the needle tip, and the presser foot are raised during the non-embroidery periods are respectively the second needle height, the second needle tip height, and the second presser foot height, and: The height of the second needle is greater than the height of the first needle; and / or The height of the second needle tip is greater than the height of the first needle tip; and / or The height of the second presser foot is greater than the height of the first presser foot; The ring shuttle is located below the needle bar assembly; A shuttle drive assembly is used to drive the shuttle to perform periodic reciprocating rotation and synchronous deflection in random needle directions.

[0009] The automatic embroidery machine according to embodiments of the present invention has at least the following beneficial effects: The automated embroidery machine uses a composite drive component to drive the needle tip mechanism, needle bar assembly, and presser foot mechanism to move up and down reciprocally during embroidery, thus embroidering the fabric and achieving automated embroidery. During non-embroidery periods, the height adjustment component raises the needle tip bar, needle bar, and presser foot to increase the space above the working surface, facilitating corresponding operations on the fabric. The transition between embroidery and non-embroidery periods is smooth, resulting in high automated embroidery efficiency. The circular shuttle can rotate periodically in coordination with the up-and-down reciprocating movement of the needle, needle tip, and presser foot, achieving automated thread feeding and embroidery. Furthermore, the circular shuttle can also deflect synchronously with the direction of the needle, ensuring that the direction of the circular shuttle thread feeding always matches the direction of the needle hook, making the embroidery action smoother and more stable.

[0010] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a rear embodiment of the embroidery machine concealed housing of the present invention; Figure 2 A schematic diagram of one embodiment of the nose section component; Figure 3 This is a schematic diagram showing the assembly of the head unit, the third drive shaft, the first drive shaft, and the second drive shaft. Figure 4 A schematic diagram of one embodiment of the height adjustment component; Figure 5 A schematic diagram of the height adjustment component from another direction; Figure 6 An exploded view of one embodiment of the locking mechanism; Figure 7 for Figure 4 Enlarged view of point A in the middle; Figure 8 A schematic diagram of one embodiment of the locking mechanism; Figure 9 An exploded view of one embodiment of the height adjustment component; Figure 10 A schematic diagram of one embodiment of the locking gear; Figure 11 A schematic diagram of one embodiment of a drive gear; Figure 12 This is a schematic diagram of the nose section from another direction; Figure 13 This is a schematic diagram showing the cooperation between the drive body, the second drive component, and the third drive component; Figure 14This is a schematic diagram showing the interaction between the drive body, the first drive component, and the guide seat. Figure 15 This is a schematic diagram showing the interaction between the swing mechanism and the second drive shaft; Figure 16 A cross-sectional view of one embodiment of the ring shuttle; Figure 17 This is a schematic diagram of the lead wire in conjunction with the needle plate structure and the ring shuttle; Figure 18 A schematic diagram of one embodiment of the embroidery frame driving device; Figure 19 This is a schematic diagram showing the interaction between the embroidery frame drive device and the machine frame; Figure 20 This is a schematic diagram showing the connection mechanism with the machine arm and the second housing; Figure 21 A schematic diagram showing the connection between the embroidery frame support and the embroidery frame; Figure 22 for Figure 21 An explosion diagram; Figure 23 This is a schematic diagram of one embodiment of an embroidery machine. Detailed Implementation

[0012] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0013] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0014] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0015] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0016] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0017] Reference Figure 1 and Figure 2 An automatic embroidery machine is provided in some embodiments of the present invention. In some embodiments, the embroidery machine includes a frame 30, the frame 30 having a base 31 extending along a first direction, a column 32 extending upward from the head end of the base 31, and a machine arm 33 extending along the first direction from the upper end of the column 32. In some embodiments, the automatic embroidery machine further includes a head assembly 10, which is mounted at the end of the machine arm 33. The head assembly 10 includes a needle bar assembly 100, a needle tip mechanism 200, and a presser foot mechanism 300. 100 includes a needle bar 110 and a needle 120 mounted on the lower end of the needle bar 110. The needle 120 may be provided with a thread hole or a thread hook for threading or hooking the embroidery thread. The needle tip mechanism 200 includes a needle tip bar 210 and a needle tip 220 mounted on the lower end of the needle tip bar 210. The needle tip 220 is provided with a needle channel that runs vertically through the needle 120 for guiding the needle 120 to thread the embroidery thread into the fabric. The presser foot mechanism 300 is equipped with a presser foot 310 for organizing the loops of thread during the embroidery process.

[0018] In some embodiments, the head assembly 10 includes a composite drive assembly 400, which is connected to the needle bar 110, the needle tip bar 210, and the presser foot 310, and is used to drive the needle 120, the needle tip 220, and the presser foot 310 to reciprocate vertically during the embroidery period. The connection method between the composite drive assembly 400 and the needle bar 110, the needle tip bar 210, and the presser foot 310 is not limited to direct or indirect connection. For example, the composite drive assembly 400 may be directly connected to the needle bar 110, the needle tip bar 210, and the presser foot 310, or the composite drive assembly 400 may be indirectly connected to the needle bar 110, the needle tip bar 210, and the presser foot 310 through other transmission mechanisms.

[0019] In some embodiments, the head assembly 10 further includes a height adjustment component 500, which is connected to the needle bar 110, the needle tip bar 210, and the presser foot 310, and is used to raise the needle 120, the needle tip 220, and the presser foot 310 during non-embroidery periods. The connection method between the height adjustment component 500 and the needle bar 110, the needle tip bar 210, and the presser foot 310 is not limited to direct or indirect connection. For example, the height adjustment component 500 may be directly connected to the needle bar 110, the needle tip bar 210, and the presser foot 310, or the height adjustment component 500 may be indirectly connected to the needle bar 110, the needle tip bar 210, and the presser foot 310 through other transmission mechanisms.

[0020] The embroidery period refers to the process by which the machine head part 10 embroiders the fabric through reciprocating motion, such as the process by which the needle 120, needle tip 220, and presser foot 310 embroider the fabric with embroidery thread during their up-and-down reciprocating movement; the non-embroidery period refers to the process by which the machine head part 10 stops reciprocating motion to stop the embroidery action on the fabric, such as the period when the needle 120, needle tip 220, and presser foot 310 stop their up-and-down reciprocating movement.

[0021] Using the surface of the fabric as the working surface, during embroidery, the needle tip 220 descends to press against the upper surface of the fabric, the needle 120 descends to pierce the fabric and guide the embroidery thread below the working surface, and the presser foot 310 descends to organize the stitch loops based on the upper surface of the fabric. When the needle tip 220 and presser foot 310 rise, they release the pressure on the fabric, allowing the fabric to move or turn. When the needle 120 rises, it detaches from the fabric and guides the embroidery thread above the working surface. Through the reciprocating up-and-down movement of the needle tip 220, needle 120, and presser foot 310, embroidery is continuously applied to the fabric. During non-embroidery periods, the needle tip 220, needle 120, and presser foot 310 all stop moving up and down, and the embroidery action is interrupted.

[0022] In some embodiments, the automatic embroidery machine also includes an embroidery frame 40 for fixing the fabric, and the fabric can be replaced by removing and attaching the embroidery frame 40 during non-embroidery periods.

[0023] When the embroidery machine needs to change the embroidery direction after completing the current embroidery task, or needs to replace the current fabric with a new fabric to be embroidered, or needs to remove the embroidery frame 40 to change the fabric, the limited space between the lower part of the machine head component 10 and the upper part of the machine base 31 restricts the operation and makes it difficult to disassemble and assemble the embroidery frame 40 and pick up and put away the fabric. In this embodiment, during non-embroidery periods, the height adjustment component 500 drives the needle tip rod 210, needle bar 110, and presser foot 310 to rise, raising the needle 120, presser foot 310, and needle tip 220 upwards and away from the work surface, increasing the space above the work surface to facilitate corresponding operations on the fabric, such as changing the fabric or disassembling and assembling the embroidery frame 40. After the fabric operation is completed, the height adjustment component 500 drives the needle tip rod 210, needle bar 110, and presser foot 310 to descend, lowering the needle tip 220, needle 120, and presser foot 310 to the initial embroidery position, allowing the composite drive component 400 to drive the needle tip mechanism 200, needle bar assembly 100, and presser foot mechanism 300 to move up and down again during embroidery periods. The transition between embroidery periods and non-embroidery periods is smooth, enabling automated embroidery.

[0024] It should be noted that conventional embroidery patterns are monotonous, limiting their diversity and hindering fabric quality improvement. In the embodiments of this application, the height adjustment component 500 drives the needle bar component 100 to rise and fall, allowing the height of the needle 120 to be changed during non-embroidery periods. This enables the needle 120 to embroider at different heights during different embroidery periods, thereby adjusting the stitch height on the fabric and creating a layered, staggered stitch pattern that improves fabric quality. For example, if the non-embroidery period is set between adjacent first and second embroidery periods, changing the height of the needle 120 during non-embroidery periods allows the needle 120 to embroider at a height higher or lower in the first embroidery period than in the second embroidery period, resulting in a staggered stitch pattern in different areas of the fabric.

[0025] In addition, during the embroidery period, the needle tip 220, the needle 120, and the presser foot 310 perform periodic up-and-down reciprocating movements. The heights at which the needle tip 220, the needle 120, and the presser foot 310 are raised by the composite drive component 400 at the same time can be the same or different. Similarly, during the non-embroidery period, the heights at which the needle tip 220, the needle 120, and the presser foot 310 are raised by the height adjustment component 500 at the same time can be the same or different.

[0026] In one embodiment, during the embroidery period, the maximum height to which the needle 120 is raised is the first needle height, the maximum height to which the needle tip 220 is raised is the first needle tip height, and the maximum height to which the presser foot 310 is raised is the first presser foot height. That is, the first needle height, the first needle tip height, and the first presser foot height can be the same or different. During non-embroidery periods, the maximum height to which the needle 120 is raised is the second needle height, the maximum height to which the needle tip 220 is raised is the second needle tip height, and the maximum height to which the presser foot 310 is raised is the second presser foot height. That is, the second needle height, the second needle tip height, and the second presser foot height can be the same or different.

[0027] It should be noted that the first needle height and the second needle height refer to the height of the lower end of the needle 120 relative to the working surface, or the height of the lower end of the needle 120 relative to the top surface of the needle plate structure 34; the first needle tip height and the second needle tip height refer to the height of the lower end of the needle tip 220 relative to the working surface, or the height of the lower end of the needle tip 220 relative to the top surface of the needle plate structure 34; the first presser foot height and the second presser foot height refer to the height of the lower end of the presser foot 310 relative to the working surface, or the height of the lower end of the presser foot 310 relative to the top surface of the needle plate structure 34.

[0028] Furthermore, in one embodiment, the height of the second needle is greater than the height of the first needle, so that the needle 120 is raised to a height greater than the working height during the embroidery period, increasing the working space below the needle 120 during the non-embroidery period, facilitating corresponding operations on the fabric. Alternatively, in another embodiment, the height of the second needle tip is greater than the height of the first needle tip, so that the needle tip 220 is raised to a height greater than the working height during the embroidery period, increasing the working space below the needle tip 220 during the non-embroidery period. Alternatively, in another embodiment, the height of the second presser foot is greater than the height of the first presser foot, so that the presser foot 310 is raised to a height greater than the working height during the embroidery period, increasing the working space below the presser foot 310 during the non-embroidery period, facilitating corresponding operations on the fabric.

[0029] Understandably, the height of the second needle, the height of the second needle tip, and the height of the second presser foot can all be set to be greater than the height of the first needle, the height of the first needle tip, and the height of the first presser foot, respectively; or, the height of the second needle is greater than the height of the first needle, and the height of the second needle tip and the height of the second presser foot are equal to the height of the first needle tip and the height of the first presser foot, respectively.

[0030] In another embodiment, the height of the second needle is greater than the height of the second presser foot and the height of the second needle tip. This allows the needle 120 to be raised to a higher height than the needle tip 220 and presser foot 310 during non-embroidery periods. The needle tip 220 and presser foot 310 can avoid the needle 120 in the vertical direction, which is beneficial for changing the needle 120.

[0031] Understandably, the lifting of the needle bar 110, the needle tip bar 210, and the presser foot 310 during non-embroidery periods can be driven by the same power source or by independent power sources.

[0032] In one embodiment, the height adjustment assembly 500 includes a power source. The needle bar 110, needle tip rod 210, and presser foot 310 are connected to the same base. A linear motor is connected to the base. The power source drives the base to rise and fall, thereby synchronously raising and lowering the needle bar assembly 100, needle tip mechanism 200, and presser foot mechanism 300. Alternatively, in another embodiment, the height adjustment assembly 500 includes three power sources. The needle bar 110, needle tip rod 210, and presser foot 310 are each connected to a power source, and each power source independently drives the needle bar assembly 100, needle tip mechanism 200, and presser foot mechanism 300 to rise and fall. Alternatively, in another embodiment, the height adjustment assembly 500 includes two power sources. The raising of the needle tip 220 and presser foot 310 is driven by the same power source, while the raising of the needle 120 is driven by a separate power source.

[0033] In one embodiment, reference is made to Figure 4 and Figure 5 The automatic embroidery machine includes a first driver 101, a height adjustment assembly 500 including a first actuator 510, the first driver 101 being connected to the first actuator 510 and used to drive the first actuator 510 to rise and fall, and a needle tip mechanism 200 including a needle tip support 230 connected to a needle tip rod 210. The first actuator 510 is connected to the needle tip support 230. When the first actuator 510 is driven by the first driver 101 to move, it lifts the needle tip 220 through the needle tip support 230. The connection between the first actuator 510 and the needle tip support 230 is not limited to the following: the first actuator 510 abuts against the bottom of the needle tip support 230, or the first actuator 510 and the needle tip support 230 are rotatably connected, and their rotation axes are perpendicular to the rising and falling direction of the needle tip 220.

[0034] In one embodiment, the first driver 101 can be directly connected to the first actuator 510 and drive the first actuator 510 to move up and down; or, in another embodiment, the first driver 101 can be indirectly connected to the first actuator 510 through other transmission mechanisms, which are not limited to gear transmission mechanisms, belt transmission mechanisms, etc.

[0035] In one embodiment, the height adjustment assembly 500 further includes a drive gear 520. The first driver 101 is configured as a rotary motor and is used to drive the drive gear 520 to rotate. The needle holder 230 is configured with a needle holder engagement portion 231 that engages with the first actuator 510. The engagement between the first actuator 510 and the needle holder engagement portion 231 is not limited to abutting or other methods. For example, the first actuator 510 abuts against the bottom of the needle holder engagement portion 231. The first actuator 510 is an extension constructed on the side of the drive gear 520, that is, the first actuator 510 protrudes along the radial direction of the drive gear 520 relative to the circumference of the drive gear 520. When the drive gear 520 rotates, the first actuator 510 can push the needle holder engagement portion 231 upward.

[0036] Understandably, the rotation axis of the drive gear 520 can be parallel to the horizontal direction. When the first driver 101 drives the drive gear 520 to rotate, the first actuator 510 moves up and down on the side of the drive gear 520. When the first actuator 510 lifts the needle holder engagement 231 upward, the needle holder 230 is lifted, and the needle rod 210 simultaneously drives the needle 220 to rise. Thus, by integrating the first actuator 510 into the side of the drive gear 520, the lifting of the needle mechanism 200 can be achieved simply by using the first driver 101 to drive the drive gear 520 to rotate. The height adjustment assembly 500 has a compact structure and high transmission efficiency.

[0037] Furthermore, in one embodiment, the needle tip holder 230 further includes a composite drive unit 232, which is located at both ends of the needle tip holder 230, along with the needle tip holder engagement unit 231. The needle tip holder engagement unit 231 is used to link with the first execution unit 510, and the composite drive unit 232 is used to link with the composite drive assembly 400. During the embroidery period, the composite drive assembly 400 causes the needle tip 220 to reciprocate by linking with the composite drive unit 232. During the non-embroidery period, the first execution unit 510 of the drive gear 520 lifts the needle tip holder engagement unit 231, thereby raising the needle tip 220.

[0038] In one embodiment, reference is made to Figure 2 , Figure 4 and Figure 5The needle tip mechanism 200 also includes a first elastic element 240, and the head assembly 10 also includes a head support 11. The needle bar 110 and the needle tip bar 210 are both vertically movably connected to the head support 11. The head support 11 is in a fixed state. The first elastic element 240 acts on the needle tip support 230 and the head support 11, causing the needle tip 220 to return to the working surface. Specifically, the lower end of the first elastic element 240 is connected to the needle tip support 230, and the upper end of the first elastic element 240 is connected to the head support 11. When the needle tip support 230 is lifted by the first actuator 510 during non-embroidery periods, the needle tip 220 moves upward and away from the working surface. At the same time, the first elastic element 240 is compressed. After the first actuator 510 removes its lifting action on the needle tip support 230, the first elastic element 240 releases its elastic force, pushing the needle tip support 230 downward, causing the needle tip 220 to return to the working surface.

[0039] In one embodiment, reference is made to Figure 3 and Figure 5 The height adjustment assembly 500 also includes a locking mechanism 530, which is used to lock the relative rotation of the needle bar 110 and the sleeve 130 to switch to a locked state, or to unlock the relative rotation of the needle bar 110 and the sleeve 130 to switch to an unlocked state. In the locked state, the relative rotation of the needle bar 110 and the sleeve 130 is locked. Since the needle bar 110 and the sleeve 130 are threadedly connected, they can only rotate synchronously, so that the needle 120 can deflect in response to the rotation of the sleeve 130. In the unlocked state, the relative rotation of the needle bar 110 and the sleeve 130 is unlocked, and the needle bar 110 and the sleeve 130 can rotate relative to each other. The needle bar 110 can move vertically relative to the sleeve 130, so that the needle 120 can change its height in response to the rotation of the sleeve 130.

[0040] Furthermore, in one embodiment, the automatic embroidery machine also includes a second driver 102, which drives the sleeve 130 to rotate. The second driver 102 works in conjunction with the locking mechanism 530. When the locking mechanism 530 locks the relative rotation of the needle bar 110 and the sleeve 130, the second driver 102 drives the sleeve 130 and the needle bar 110 to rotate synchronously, causing the needle 120 to rotate and change the orientation of the needle hook. When the locking mechanism 530 unlocks the relative rotation of the needle bar 110 and the sleeve 130, the second driver 102 drives the needle bar 110 to move up and down relative to the sleeve 130, causing the needle 120 to rise and fall.

[0041] It should be understood that during the embroidery period, the fabric needs to change its movement direction in real time according to the embroidery pattern. The orientation of the needle 120 hook is at a preset angle to the movement direction of the fabric in order to form a continuous stitch on the fabric. In this embodiment, by setting the second driver 102 to drive the needle 120 to move, the needle 120 is lifted during non-embroidery periods, thereby avoiding the operating space of the fabric and facilitating the picking and putting away of the fabric. At the same time, by setting the second driver 102 to drive the needle 120 to rotate during the embroidery period, the orientation of the needle 120 hook is changed so that the orientation of the needle 120 hook matches the movement direction of the fabric.

[0042] Specifically, in one embodiment, the second driver 102 is connected to one end of the first drive shaft 60 and drives the first drive shaft 60 to rotate. The other end of the first drive shaft 60 is connected to the sleeve 130 and can drive the sleeve 130 to rotate. When the second driver 102 drives the first drive shaft 60 to rotate, the needle 120 can change its height or change its hook orientation in response to the rotation of the sleeve 130. Figure 3 As shown, the second driver 102 is connected to the first drive shaft 60 via a belt drive mechanism 540 and drives the first drive shaft 60 to rotate.

[0043] Understandably, the rotation direction of the first drive shaft 60 may be parallel to the rotation direction of the rod sleeve 130, or the rotation direction of the first drive shaft 60 may be perpendicular to the rotation direction of the rod sleeve 130. The first drive shaft 60 may be directly connected to the rod sleeve 130, or the first drive shaft 60 may be connected to the rod sleeve 130 through a gear transmission mechanism or a belt transmission mechanism.

[0044] like Figure 2 In the illustrated embodiment, the rotation direction of the first drive shaft 60 is perpendicular to the rotation direction of the sleeve 130. The needle bar assembly 100 also includes a height adjustment gear 140 that is non-rotatably mounted on the sleeve 130. The height adjustment gear 140 surrounds the periphery of the sleeve 130. The end of the first drive shaft 60 is provided with a transmission gear 61. The height adjustment gear 140 is coupled to the transmission gear 61, that is, the height adjustment gear 140 meshes with the transmission gear 61. The height adjustment gear 140 and the transmission gear 61 can be configured as bevel gears. When the second driver 102 drives the first drive shaft 60 to rotate, the transmission gear 61 drives the height adjustment gear 140 to rotate, thereby driving the sleeve 130 to rotate.

[0045] In one embodiment, the locking mechanism 530 includes a rotation limiting member 532, which is used to lock or unlock the relative rotation of the needle bar 110 and the sleeve 130. In the locked state, the rotation limiting member 532 abuts against the needle bar 110 and the sleeve 130 along the circumference of the needle bar to limit the relative rotation of the needle bar 110 and the sleeve 130. In the unlocked state, the rotation limiting member 532 separates from the sleeve 130 and abuts against the needle bar 110 along the circumference of the needle bar 110, so that the needle bar 110 can move up and down relative to the sleeve 130.

[0046] In one embodiment, the rotation limiting member 532 locks the relative rotation of the needle bar 110 and the sleeve 130 in the following manner: both the needle bar 110 and the sleeve 130 have interconnected positioning holes in their radial directions. The rotation limiting member is configured as a positioning pin. In the locked state, the positioning pin is inserted into the positioning holes of the needle bar 110 and the sleeve 130, thereby restricting the relative rotation of the needle bar 110 and the sleeve 130. The needle bar 110 and the sleeve 130 can only rotate synchronously. In the unlocked state, the positioning pin is withdrawn from the positioning holes of the needle bar 110 and the sleeve 130, thereby releasing the restriction on the relative rotation of the needle bar 110 and the sleeve 130. The needle bar 110 and the sleeve 130 then rotate relative to each other, and the needle bar 110 moves up and down relative to the sleeve 130.

[0047] Alternatively, in another embodiment, the peripheral side of the needle bar 110 and the circumferential end of the sleeve 130 are provided with corresponding locking grooves. When the positioning pin is inserted into the locking groove of the needle bar 110 and the sleeve 130 in the up-down direction, it switches to the locked state. When the positioning pin is disengaged from the locking groove of the needle bar 110, it switches to the unlocked state.

[0048] Or, such as Figure 6 and Figure 7In the illustrated embodiment, the locking mechanism 530 includes a locking member 531, a rotation limiting member 532, and a spring piece 533. The locking member 531 has an axial channel 5311, a radially extending groove 5313, and a first locking groove 5312 corresponding to one end of the groove 5313 constructed on the outer wall. The other end of the groove 5313 is provided with a slot 5314. The groove 5313 is located at the circumferential end of the locking member 531 and extends radially along the locking member 531, with both ends communicating with the first locking groove 5312 and the slot 5314, respectively. The axial channel 5311 extends vertically through the locking member 531, and its upper end communicates with the groove 5313. A second locking groove 131 is constructed on the outer side of the upper end of the sleeve 130. The positions of the first locking groove 5312 and the second locking groove 131 are along the sleeve 130. The radial correspondence of 30; the rotation limiting member 532 is assembled in the slide groove 5313, the upper end of the rod sleeve 130 passes through the axial channel 5311, the upper end of the needle bar 110 passes through the interior of the rotation limiting member 532 and extends upward. The needle bar 110 and the rotation limiting member 532 are vertically movably adapted to each other, that is, the needle bar 110 can only move vertically relative to the rotation limiting member 532. The rotation limiting member 532 is constructed with a protrusion 534 that cooperates with the second locking groove 131. That is, when the protrusion 534 moves radially along the rod sleeve 130, the protrusion 534 can enter and exit the second locking groove 131. The spring piece 533 is assembled in the slot 5314 and acts elastically on the rotation limiting member 532. The spring piece 533 gives the rotation limiting member 532 an elastic force to move toward the first locking groove 5312, so that the protrusion 534 has a tendency to move toward the second locking groove 131.

[0049] Understandably, when the protrusion 534 is located in the second locking groove 131, the rotation limiting member 532 located in the slide groove 5313 partially restricts the rotation of the needle bar 110, and the protrusion 534 restricts the rotation of the sleeve 130. The relative rotation of the needle bar 110 and the sleeve 130 is in a locked state. When the rotation limiting member 532 moves along the slide groove 5313 and causes the protrusion 534 to exit from the second locking groove 131, the protrusion 534 no longer restricts the rotation of the sleeve 130 relative to the needle bar 110, and the restriction on the relative rotation of the needle bar 110 and the sleeve 130 is released.

[0050] Specifically, in response to the insertion of the unlocking object into the first locking groove 5312, the unlocking object pushes the rotation limiting member 532 to move within the slide groove 5313. The rotation limiting member 532 moves toward the second locking groove 131, causing the protrusion 534 to exit from the second locking groove 131. The restriction on the relative rotation of the needle bar 110 and the sleeve 130 is released. Since the needle bar 110 and the sleeve 130 are threadedly engaged, when the sleeve 130 is driven by the first drive shaft 60 to rotate, the needle bar 110 moves relative to the sleeve 130 to change the height of the needle 120. For example, when the first drive shaft 60 rotates in the forward direction, the needle bar 110 moves upward, and when the first drive shaft 60 rotates in the reverse direction, the needle bar 110 moves downward.

[0051] When the unlocking object is removed from the first locking groove 5312, the protrusion 534 is subjected to the elastic force of the spring 533, causing the rotating limiting member 532 to be pushed by the spring 533 and move along the slide groove 5313. The protrusion 534 is inserted into the second locking groove 131 again. The relative rotation of the needle bar 110 and the sleeve 130 is in a locked state. When the sleeve 130 is driven by the first drive shaft 60 to rotate, the needle bar 110 rotates synchronously with the sleeve 130 to change the orientation of the needle hook of the needle 120.

[0052] In some embodiments, the rotation limiting member 532 is configured with an anti-rotation limiting hole 5321. The upper part of the needle bar 110 is configured to be adapted to the anti-rotation limiting hole 5321 in a manner that allows only axial movement. The upper end of the needle bar 110 extends out of the anti-rotation limiting hole 5321 and is restricted from disengaging from the anti-rotation limiting hole 5321 by an end plate 535. The end plate 535 is fixed to the top of the locking member 531 and restricts the rotation limiting member 532 between the end plate 535 and the locking member 531. Exemplarily, the upper part of the needle bar 110 has a rectangular cross-section. The anti-rotation limiting hole 5321 extends in the same direction as the groove 5313. The two opposing inner walls of the anti-rotation limiting hole 5321 engage with the two sides of the upper part of the needle bar 110 to restrict the rotation of the needle bar 110 about the axial direction and allow it to move only vertically.

[0053] Specifically, the upper circumferential structure of the needle bar 110 has two opposing planes, and the anti-rotation limiting hole 5321 is a hole structure including at least one pair of planes. The upper part of the needle bar 110 is configured to be adapted to the anti-rotation limiting hole 5321 in a way that allows only axial movement, preventing the needle bar 110 from rotating when adjusting the height of the needle 120 by rotating the sleeve 130 in either the forward or reverse direction.

[0054] In one embodiment, reference is made to Figures 4 to 6The unlocking object is configured as a movable locking member 551. Specifically, the height adjustment component 500 includes a locking mechanism 550, which includes a movable locking member 551. The movable locking member 551 can be inserted into or removed from the first locking groove 5312 to switch the locking or unlocking state of the pin bar 110 and the sleeve 130 rotating relative to each other.

[0055] Furthermore, the movement of the movable locking member 551 and the lifting of the needle tip 220 can be driven by the same power source. For example, in one embodiment, both the movable locking member 551 and the needle tip rod 210 are connected to the first driver 101. In response to the drive of the first driver 101, the first actuator 510 drives the needle tip rod 210 to rise and fall during non-embroidery periods to lift the needle tip 220. The first driver 101 drives the movable locking member 551 to insert into the first locking groove 5312 and pushes the rotation limit member 532 to disengage it from the first locking groove 5312, so that the relative rotation between the needle rod 110 and the sleeve 130 is unlocked. Then, the first drive shaft 60 is driven by the second driver 102 to rotate, and the sleeve 130 is driven by the first drive shaft 60 to rotate, so that the needle rod 110 moves up and down to lift the needle rod 110.

[0056] In the case where both the movable locking member 551 and the needle tip rod 210 are driven by the first driver 101, the first driver 101 can be configured as a rotary motor. The height adjustment component 500 includes a drive gear 520, and the locking mechanism 550 includes a transmission rack. The movable locking member 551 is connected to the transmission rack, and the transmission rack meshes with the drive gear 520. Thus, the drive gear 520 is driven by the first driver 101 to rotate, thereby causing the first actuator 510 to lift the needle tip support engagement portion 231 to raise the needle tip 220. The transmission rack is driven by the drive gear 520 to move, and the movable locking member 551 follows the movement of the transmission rack to insert into or exit the first locking groove 5312.

[0057] Alternatively, in another embodiment, the first driver 101 may be configured as a rotary motor, the height adjustment assembly 500 includes a drive gear 520, and the movable locking member 551 is connected to the first driver 101 via a crank-slider mechanism. For example, the locking mechanism 550 includes a drive shaft, a crank, and a slider. One end of the drive shaft is connected to the first driver 101 and is driven to rotate by the first driver 101. The crank is connected to the circumferential side of the drive shaft, and the drive gear 520 is connected to the end of the drive shaft. The crank and the drive gear 520 rotate synchronously with the rotation of the drive shaft. When the drive gear 520 rotates, it lifts the needle nozzle 220 through the first actuator 510 lifting the needle nozzle support engagement 231. The slider is connected to the movable locking member 551, and the crank is rotatably connected to the slider. When the crank rotates, it drives the slider to move, and the movable locking member 551 moves synchronously with the slider and inserts into or exits the first locking groove 5312.

[0058] like Figure 8 and Figure 9 In the illustrated embodiment, the locking mechanism 550 further includes a locking gear 552 and a first cam pin mechanism configured between the locking gear 552 and the movable locking member 551. The first driver 101 drives the locking gear 552 to rotate, thereby driving the movable locking member 551 to move via the first cam pin mechanism. The first driver 101 drives the locking gear 552 to rotate, thereby driving the movable locking member 551 to move via the first cam pin mechanism. In response to the drive of the first driver 101, the movable locking member 551 inserts into the first locking groove 5312 and pushes the rotation limit member 532 to disengage it from the first locking groove 5312. In response to the first drive shaft 60 driving the rod sleeve 130 to rotate in the forward or reverse direction, the height of the needle 120 is adjusted.

[0059] In one embodiment, the movable locking member 551 and the locking gear 552 are arranged along the axial direction of the locking gear 552, and the first cam pin mechanism is disposed between the movable locking member 551 and the locking gear 552. For example, in one embodiment, the first cam pin mechanism includes an eccentric protrusion disposed on the side of the locking gear 552 facing the movable locking member 551. The eccentric protrusion is eccentrically disposed relative to the rotation axis of the locking gear 552. The movable locking member 551 is provided with a contour groove 501 that slides with the eccentric protrusion. The eccentric protrusion is slidably disposed in the contour groove 501. When the locking gear 552 is driven to rotate by the first driver 101, the eccentric protrusion moves with the rotation of the locking gear 552. While moving along the contour groove 501, the eccentric protrusion abuts against the groove wall of the contour groove 501 and pushes the movable locking member 551 to move, so that the movable locking member 551 inserts into or exits the first locking groove 5312.

[0060] Alternatively, in another embodiment, such as Figures 8 to 10 As shown, the first cam pin mechanism includes a first eccentric profile 5521 constructed on the locking gear 552 and a first pin protrusion 5511 constructed on the movable locking member 551. The first eccentric profile 5521 and the first pin protrusion 5511 abut against each other. The first eccentric profile 5521 moves with the rotation of the locking gear 552 and pushes the first pin protrusion 5511 to move, so that the movable locking member 551 moves to insert or withdraw from the first locking groove 5312.

[0061] In one embodiment, the automatic embroidery machine further includes a drive back plate 12. A movable locking member 551, a locking gear 552, and a first driver 101 are mounted on the drive back plate 12. The movable locking member 551 and the drive back plate 12 are movably connected by one or more linear guide rail structures. The linear guide rail structures provide guidance for the movement of the movable locking member 551 relative to the drive back plate 12, ensuring precise engagement between the movable locking member 551 and the first locking groove 5312. A locking elastic member 553 is connected between the movable locking member 551 and the drive back plate 12. The locking elastic member 553 provides a force to the movable locking member 551 away from the first locking groove 5312 to reset the movable locking member 551 to the needle height adjustment state. For example, the two ends of the locking elastic member 553 are respectively connected to a first mounting protrusion 121 of the drive back plate 12 and a second mounting protrusion 5512 of the movable locking member 551.

[0062] In some embodiments, one or more linear guide structures include at least one guide groove formed in the movable locking member 551, and at least one pin disposed on the drive back plate 12, the pin being slidably connected within the guide groove to guide the movement of the movable locking member 551 relative to the drive back plate 12. Exemplarily, the movable locking member 551 extends along its direction of movement, and includes a first guide groove 5513 and a second guide groove 5514 arranged along its direction of movement, and a first pin 122 and a second pin 123 disposed on the drive back plate 12, the first pin 122 being slidably connected within the first guide groove 5513, and the second pin 123 being slidably connected within the second guide groove 5514.

[0063] Furthermore, in one embodiment, the locking gear 552 is mounted on the second pin 123, that is, one end of the second pin 123 is connected to the first driver 101. The first driver 101 drives the locking gear 552 to rotate through the second pin 123, and at the same time guides the movement of the movable locking member 551 by the sliding engagement between the second pin 123 and the second guide groove 5514.

[0064] In one embodiment, such as Figure 8As shown, the movable locking member 551 includes a first locking piece 5515 and a second locking piece 5516 arranged along the axis of the locking gear 552. The first locking piece 5515 is located between the second locking piece 5516 and the drive back plate 12. The first locking piece 5515 and the second locking piece 5516 are integrally connected and bent towards each other. The first locking piece 5515 is movably connected to the drive back plate 12. For example, the first locking piece 5515 is provided with a guide groove, which is used to cooperate with the pin on the drive back plate 12 to guide the movement of the first locking piece 5515. The second locking piece 5516 can move along with the first locking piece 5515. The second locking piece 5516 is located on the side of the locking member where the first locking groove 5312 is provided. The side of the second locking piece 5516 facing the first locking groove 5312 can be inserted into or removed from the first locking groove 5312. By setting the movable locking member 551, including the first locking piece 5515 and the second locking piece 5516, and setting the movable locking member 551 on the side of the drive back plate 12 facing the head component 10, the movable locking member 551 can slide and engage with the drive back plate 12 from different sides, and can be inserted into and withdrawn from the first locking groove 5312. This makes full use of the space between the head component 10 and the drive back plate 12, as well as the space on different sides of the head component 10, making the structure of the height adjustment mechanism more compact, the driving efficiency higher, and enabling the automatic embroidery machine to be miniaturized and the production cost lower.

[0065] In one embodiment, such as Figure 9 and Figure 11 As shown, the height adjustment assembly 500 includes a second cam pin mechanism, and the drive gear 520 is configured with a first actuator 510. The drive gear 520 is connected to the presser foot 310 through the second cam pin mechanism. The needle tip mechanism 200 includes a needle tip support 230, which is connected to the needle tip rod 210. The needle tip support 230 is configured with a needle tip support engagement portion 231 that engages with the first actuator 510. The first actuator 510 can lift the needle tip support engagement portion 231 upward. Thus, when the first driver 101 drives the drive gear 520 to rotate, the drive gear 520 drives the second cam pin mechanism to move, thereby raising the presser foot 310. The first actuator 510 also lifts the needle tip support engagement portion 231, thereby raising the needle tip 220. The lifting of both the needle tip 220 and the needle 120 is achieved by the first driver 101 driving the drive gear 520, which improves the structural integration and motion efficiency of the height adjustment mechanism.

[0066] For example, in one embodiment, the presser foot mechanism 300 includes a presser foot drive plate 320, which is vertically movably mounted on the drive back plate 12. One end of the presser foot drive plate 320 is connected to the presser foot 310. The second cam pin mechanism includes an eccentric protrusion disposed on the side of the drive gear 520 facing the movable locking member 551. The eccentric protrusion is eccentrically disposed relative to the rotation axis of the drive gear 520. The presser foot drive plate 320 is provided with a contour groove 501 that slides with the eccentric protrusion. The eccentric protrusion is slidably disposed in the contour groove 501. When the drive gear 520 is driven by the first driver 101 to rotate, the eccentric protrusion moves with the rotation of the drive gear 520. While the eccentric protrusion moves along the contour groove 501, it abuts against the groove wall of the contour groove 501 and pushes the presser foot drive plate 320 to move, so that the presser foot 310 is lifted.

[0067] Alternatively, in another embodiment, the second cam pin mechanism includes a second eccentric profile 521 constructed on the drive gear 520 and a second pin protrusion 321 constructed on the pressure foot drive plate 320. The second eccentric profile 521 is located on one side of the drive gear 520 axially, for example, the second eccentric profile 521 is located between the drive gear 520 and the drive back plate 12, and protrudes toward the drive back plate 12 relative to the end face of the drive gear 520. The second pin protrusion 321 abuts against the second eccentric profile 521. The second eccentric profile 521 moves with the rotation of the drive gear 520 and pushes the second pin protrusion 321 up and down to lift the pressure foot 310.

[0068] Specifically, in one embodiment, the presser foot drive plate 320 includes a plate body 322, a first drive arm 323, and a second drive arm 324. The plate body 322 is vertically slidably connected to the drive back plate 12. A second cam pin mechanism is located between the drive gear 520 and the plate body 322. Both the first drive arm 323 and the second drive arm 324 are connected to the plate body 322, with the second drive arm 324 located above the first drive arm 323. The first drive arm 323 is used to connect the presser foot 310, and the second drive arm 324 is used to connect the composite drive assembly 400. Thus, during the embroidery period, the composite drive assembly 400, in conjunction with the second drive arm 324, causes the presser foot mechanism 300 to reciprocate. During non-embroidery periods, the drive gear 520, in conjunction with the plate body 322, causes the presser foot mechanism 300 to be lifted.

[0069] The presser foot mechanism 300 also includes a presser foot bracket 330 and a second elastic element 340. The presser foot bracket 330 is fixed, and the presser foot 310 is vertically and movably mounted on the presser foot bracket 330. The second elastic element 340 acts on the presser foot 310 and the presser foot bracket 330 to reset the presser foot 310 towards the working surface. Specifically, the upper end of the second elastic element 340 is connected to the presser foot bracket 330, and the lower end is connected to the presser foot 310. When the presser foot 310 is raised during non-embroidery periods, the presser foot 310 moves relative to the presser foot bracket 330 and moves upward away from the working surface. The second elastic element is compressed and contracts. After the fabric is changed, the second drive arm 324 removes the upward lifting force on the presser foot 310, and the second elastic element releases its elastic force, causing the presser foot 310 to move downward and reset towards the working surface.

[0070] In one embodiment, such as Figure 8 and Figure 9 As shown, the locking mechanism 550 also includes a main gear 554, a locking gear 552, and a drive gear 520, all of which mesh with the main gear 554. The main gear 554, the locking gear 552, and the drive gear 520 are located on the same side of the drive back plate 12. The first driver 101 is located on the opposite side of the drive back plate 12. The first driver 101 is connected to the main gear 554 and directly drives the main gear 554 to rotate, so that the drive gear 520 and the locking gear 552 rotate synchronously. In this way, the drive gear 520 and the locking gear 552 are driven simultaneously by the same power source, so that the locking and unlocking actions of the movable locking member 551 on the relative rotation of the needle bar 110 and the sleeve 130 are coordinated with the lifting of the needle nozzle 220 and the pressure foot 310.

[0071] Understandably, in some embodiments, the timing of the movement of the movable locking member 551, the pressure foot drive plate 320, and the first actuator 510 can be controlled by adjusting the transmission ratio of the main gear 554 to the locking gear 552 and the transmission ratio of the main gear 554 to the drive gear 520, so that the lifting of the needle 120, the needle tip 220, and the pressure foot 310 is synchronized.

[0072] In one specific embodiment, the first driver 101 is connected to the main gear 554, and both the locking gear 552 and the driving gear 520 mesh with the main gear 554. The first driver 101 drives the main gear 554, which in turn causes the locking gear 552 and the driving gear 520 to rotate synchronously. The second driver 102 is connected to one end of the first drive shaft 60, and the other end of the first drive shaft 60 is connected to the sleeve 130. The second driver 102 drives the sleeve 130 to rotate through the first drive shaft 60. The needle bar assembly 100, the needle tip mechanism 200, and the presser foot mechanism 300 can all be vertically and movably connected to the head support 11. The needle bar assembly 100, the needle tip mechanism 200, and the presser foot mechanism 300 are all connected to the composite drive assembly 400.

[0073] During the embroidery period, the composite drive assembly 400 drives the needle bar assembly 100, the needle tip mechanism 200, and the presser foot mechanism 300 to reciprocate periodically to embroider the fabric. During the non-embroidery period, the first driver 101 drives the main gear 554, and the second driver 102 drives the first drive shaft 60. The main gear 554 rotates under the drive of the first driver 101, causing the locking gear 552 to rotate synchronously with the drive gear 520. When the locking gear 552 rotates, it drives the movable locking member 551 to move through the first cam pin mechanism. The movable locking member 551 moves into the first locking groove 5312 and pushes the locking member to move, causing the protrusion 534 to exit the second locking groove 131. The relative rotation between the needle bar 110 and the sleeve 130 is unlocked. At this time, the sleeve 130 can be driven by the first drive shaft 60 to rotate, and at the same time, the needle bar 110 moves up and down, so that the needle bar 110 is lifted. After the locking gear 552 stops driving the movable locking member 551, during the embroidery period, the movable locking member 551 is subjected to the elastic force of the locking elastic member 553 and exits the first locking groove 5312. The protrusion 534 returns to the second locking groove 131. The relative rotation between the needle bar 110 and the sleeve 130 is a locking action. At this time, the sleeve 130 is driven by the first drive shaft 60 and rotates synchronously with the needle bar 110 to adjust the orientation of the needle hook of the machine needle 120.

[0074] Simultaneously, the drive gear 520 drives the presser foot drive plate 320 to move relative to the drive back plate 12 via the second cam pin mechanism, causing the presser foot 310 to be lifted. The drive gear 520 also lifts the needle tip 220 by pushing the needle tip support engagement portion 231 via the first actuator 510. Thus, the first driver 101 and the second driver 102 operate simultaneously, coordinating with the linkage between the locking gear 552 and the locking mechanism 550, and the linkage between the presser foot drive plate 320, the needle tip support engagement portion 231, and the drive gear 520, achieving synchronous lifting of the needle 120, the needle tip 220, and the presser foot 310 during non-embroidery periods. After the drive gear 520 removes its drive on the needle tip support engagement portion 231 and the presser foot drive plate 320, the needle tip support engagement portion 231 is subjected to the elastic force of the first elastic element, causing the needle tip 220 to return to the working surface, and the presser foot 310 is subjected to the elastic force of the second elastic element, returning to the working surface.

[0075] In some embodiments, reference is made to Figure 2 and Figure 12In the composite drive assembly 400, the first drive member 420 can be used to connect the needle bar 110, the second drive member 430 can be used to connect the needle tip bar 210, and the third drive member 440 is used to connect the presser foot 310. The first drive member 420, the second drive member 430, and the third drive member 440 are all linked with the drive body 410. The drive body 410 is used to connect to the third drive shaft 50 and is driven to rotate by the third drive shaft 50. The rotation of the drive body 410 can further drive the second drive member 430 and the third drive member 440 to rotate, while the first drive member 420 rotates vertically. The sliding motion causes the needle bar assembly 100, needle tip mechanism 200, and presser foot mechanism 300 to reciprocate vertically. During this process, the needle 120, needle tip 220, and presser foot 310 work together. The actions of the needle 120 leading the thread, the needle tip 220 pressing the fabric, and the presser foot 310 tidying up the loops are coordinated, making the embroidery process smoother and improving the embroidery quality. This simplifies the structure and number of composite drive components 400, making the structure of composite drive components 400 more compact, with high driving efficiency, fast response speed, and saving time and effort, which is conducive to the miniaturization design of composite drive components 400.

[0076] In one embodiment, the composite drive assembly 400 further includes a presser foot drive element, which can be directly or indirectly connected to the third drive member 440 and drive the third drive member 440 to rotate around the second axis. For example, the presser foot drive element is configured as a motor capable of outputting rotary power, and the motor is connected to the presser foot mechanism 300 through a transmission structure such as a shaft, connecting rod, or gear, thereby driving the presser foot mechanism 300 to rotate.

[0077] Alternatively, in another embodiment, the third driving member 440 has a first driving part 441, and the second driving member 430 has a second driving part 431. Both the first driving part 441 and the second driving part 431 are linked with the driving body 410 so that the needle tip mechanism 200 and the presser foot mechanism 300 are driven by the driving body 410 to perform reciprocating motion. In this way, the driving body 410 can simultaneously link the needle bar assembly 100, the needle tip mechanism 200 and the presser foot mechanism 300, making the composite driving assembly 400 more compact. The driving body 410 can realize the coordinated action of the needle bar assembly 100, the needle tip mechanism 200 and the presser foot mechanism 300 only driven by the third driving shaft 50, which simplifies the number of driving components in the composite driving assembly 400, helps to reduce costs, and improves the response speed and driving efficiency of the composite driving assembly 400.

[0078] In some embodiments, when the drive body 410 simultaneously drives the first drive unit 441 and the second drive unit 431, both the first drive unit 441 and the second drive unit 431 include multiple first meshing teeth, and the drive body 410 is provided with multiple second meshing teeth on its periphery. The first drive unit 441 and the second drive unit 431 can be disposed on different sides of the drive body 410. The first meshing teeth mesh with the second meshing teeth. When the drive body 410 rotates, the first drive unit 441 and the second drive unit 431 rotate synchronously under the drive of the drive body 410.

[0079] Alternatively, in other embodiments, refer to Figure 13 The drive body 410 is linked to the first drive unit 441 and the second drive unit 431 through the second cam mechanism. The second cam mechanism includes a cam profile 411 constructed on the surface of the drive body 410. The first drive unit 441 and the second drive unit 431 are both in contact with the cam profile 411. When the drive body 410 rotates, the cam profile 411 moves the first drive unit 441 and the second drive unit 431, thereby driving the second drive member 430 and the third drive member 440 to rotate.

[0080] Furthermore, in some embodiments, the rotation axis of the second drive member 430 and the rotation axis of the third drive member 440 may be further set to be parallel to the rotation axis of the drive body 410. In this way, the first drive part 441 and the second drive part 431 can be set on the periphery of the cam profile 411, which facilitates the positional arrangement of the second drive member 430 and the third drive member 440, and makes the second drive member 430, the third drive member 440 and the drive body 410 fit together more compactly.

[0081] Specifically, the rotation axis of the drive body 410 is eccentrically set relative to the center line of the drive body 410. The cam profile 411 includes a proximal profile 411a and a distal profile 411b. Both the proximal profile 411a and the distal profile 411b are set on the periphery of the drive body 410. Both the proximal profile 411a and the distal profile 411b can be set as arc surfaces. Driven by the rotation of the drive body 410, the proximal profile 411a and the distal profile 411b move around the axis of the drive body 410. The first drive part 441 and the second drive part 431 alternately contact the proximal profile 411a and the distal profile 411b, so that the second drive member 430 and the third drive member 440 are driven by the drive body 410 to reciprocate periodically.

[0082] In one example, the first drive unit 441 and the second drive unit 431 are respectively located on opposite sides of the drive body 410. When the first drive unit 441 contacts the distal contour 411b, the first drive unit 441 moves due to the actuation of the distal contour 411b. At this time, the third drive member 440 rotates around the second axis and reciprocates to lift the presser foot mechanism 300. When the drive body 410 rotates to the point where the second drive unit 431 contacts the distal contour 411b, the second drive unit 431 moves due to the actuation of the distal contour 411b. At this time, the second drive member 430 rotates around the first axis and reciprocates to lift the needle tip mechanism 200. Thus, through the cooperation of the cam contour 411 of the drive body 410 with the first drive unit 441 and the second drive unit 431, the periodic reciprocating motion of the presser foot mechanism 300 and the needle tip mechanism 200 is achieved.

[0083] It should be noted that, since the drive body 410 is linked with the second drive member 430, the third drive member 440, and the first drive member 420, as the second drive member 430 and the third drive member 440 rotate with the drive body 410, causing the presser foot mechanism 300 and the needle tip mechanism 200 to reciprocate, the first drive member 420 is simultaneously driven by the drive body 410, causing the needle bar assembly 100 to reciprocate. This allows the needle bar assembly 100, the needle tip mechanism 200, and the presser foot mechanism 300 to work together and perform periodic reciprocating motion, making the embroidery action smoother.

[0084] Specifically, during the periodic movement of the composite drive assembly 400, the drive body 410 begins to rotate, the first drive part 441 of the third drive member 440 gradually approaches and contacts the area of ​​the distal contour 411b, the second drive part 431 of the second drive member 430 gradually approaches and contacts the area of ​​the proximal contour 411a, during which the presser foot mechanism 300 is gradually lifted (i.e., the presser foot 310 gradually moves away from the fabric and is above it), and the needle tip 220 of the needle tip mechanism 200 gradually approaches the fabric until it presses on the fabric. During this process, the needle 120 gradually passes through the fabric downwards. As the drive body 410 continues to rotate, the first drive portion 441 of the third drive member 440 approaches and contacts the other side of the region of the distal contour 411b, and the second drive portion 431 of the second drive member 430 approaches and contacts the other side of the region of the proximal contour 411a. At this time, the presser foot mechanism 300 is in a raised state and gradually rises to its highest point before descending and returning to its original position. Meanwhile, the needle tip 220 of the needle tip mechanism 200 presses against the fabric, and the needle 120 moves downward to its lowest point and then moves upward back above the fabric. The drive body 410 continues to rotate, the first drive portion 441 of the third drive member 440 approaches and contacts the region of the distal contour 411b, and the second drive portion 431 of the second drive member 430 approaches and contacts the region of the proximal contour 411a. After reaching its highest point, the presser foot mechanism 300 descends and gradually returns to its initial position (i.e., the presser foot 310 presses against the fabric surface), and the needle tip 220 of the needle tip mechanism 200 leaves the fabric. This process continues periodically.

[0085] In some embodiments, the linkage between the drive body 410 and the first drive member 420 is achieved through a gear and rack mechanism. For example, both the periphery of the drive body 410 and the first drive member 420 are provided with meshing teeth. The first drive member 420 meshes with the periphery of the drive body 410. When the drive body 410 rotates, the first drive member 420 moves up and down reciprocally following the rotation of the drive body 410. Alternatively, the linkage between the drive body 410 and the first drive member 420 is achieved through a crank-slider mechanism. For example, the drive body 410 and the first drive member 420 are connected by a connecting rod. The two ends of the connecting rod are rotatably connected to the drive body 410 and the first drive member 420, respectively. The first drive member 420 slides on the mounting bracket. When the drive body 410 rotates, the drive body 410 drives the first drive member 420 to move up and down relative to the mounting bracket via the connecting rod.

[0086] Alternatively, in other embodiments, referring to the figure, the drive body 410 is linked to the first drive member 420 via a first cam mechanism. The first cam mechanism includes a cam eccentric cylinder 412 and a curved groove 421, with the cam eccentric cylinder 412 and the curved groove 421 in sliding engagement. When the drive body 410 rotates, the cam eccentric cylinder 412 rotates synchronously, and the circumferential surface of the cam eccentric cylinder 412 abuts against the inner wall of the curved groove 421. As it moves along the curved groove 421, it pushes the inner wall of the curved groove 421, causing the first drive member 420 to reciprocate up and down relative to the mounting bracket. In this embodiment, the rotational motion of the drive body 410 can be converted into the linear motion of the first drive member 420 by utilizing the cam eccentric cylinder 412 of the drive body 410 and the curved groove 421 of the first drive member 420. The transmission structure of the drive body 410 and the first drive member 420 is simple, compact, and has high transmission efficiency.

[0087] In one embodiment, the cam eccentric cylinder 412 is disposed on the drive body 410, and the curved groove 421 is disposed on the first drive member 420. When the drive body 410 rotates, the cam eccentric cylinder 412 directly drives the first drive member 420 to move by abutting against the groove wall of the curved groove 421, which can improve the driving efficiency of the drive body 410 on the first drive member 420.

[0088] Furthermore, in one embodiment, the cam eccentric cylinder 412 is equipped with a roller, which is embedded in the curved groove 421 and rolls with the curved groove 421. When the cam eccentric cylinder 412 moves along the curved groove 421, the roller can rotate while moving along the curved groove 421, so as to convert the sliding friction between the cam eccentric cylinder 412 and the curved groove 421 into rolling friction, reduce the movement resistance of the cam eccentric cylinder 412, and make the movement of the cam eccentric cylinder 412 and the drive body 410 smoother.

[0089] In the composite drive assembly 400 of this application, the drive body 410 and the first drive member 420 are linked through a first cam mechanism. The drive body 410, the second drive part 431 of the second drive member 430, and the first drive part 441 of the third drive member 440 are linked through a second cam mechanism. The second lifting part 434 of the second drive member 430 is used to periodically lift the needle tip mechanism 200, and the first lifting part 442 of the third drive member 440 is used to periodically lift the presser foot mechanism 300. The sliding of the first drive member 420 relative to the mounting bracket is used to periodically lift the needle bar assembly 100. The above settings simplify the mechanical structure, reduce the number of parts, and improve the compactness of the equipment. For the application of the composite drive assembly 400 in the scenario of automatic embroidery machine, it can effectively support the popular application in home or small studios.

[0090] In addition, the mounting bracket may also be provided with a guide structure to guide the vertical reciprocating movement of the first driving member 420; for example, in one embodiment, one of the mounting bracket and the first driving member 420 is provided with a sliding groove, and the other is provided with a sliding protrusion. The sliding protrusion is slidably disposed in the sliding groove along the vertical direction. The outer contour of the sliding protrusion is adapted to the inner contour of the sliding groove, so that the sliding groove can slide smoothly relative to the mounting bracket.

[0091] Alternatively, in another embodiment, refer to Figure 12 and Figure 14 The mounting bracket includes a head bracket 11, which is equipped with a guide seat 112. The guide seat 112 is equipped with a concave rail 1121 and a convex rail 422 coupled to the concave rail 1121. The concave rail 1121 and the convex rail 422 slide vertically. For example, a part of the concave rail 1121 is accommodated in the convex rail 422. The cam is limited by the inner wall of the convex rail 422, which enables the first drive member 420 to move up and down relative to the guide seat 112 and provides guidance for the reciprocating motion of the first drive member 420, thereby improving the smoothness and accuracy of the reciprocating motion of the needle 120 assembly and reducing operating noise.

[0092] Specifically, at least a portion of the concave rail 1121 can be embedded in the convex rail 422. To further improve the guiding effect of the mounting bracket on the movement of the first driving member 420, multiple concave rails 1121 and convex rails 422 can be provided. The multiple concave rails 1121 are located on different sides of the guide seat 112, and the multiple convex rails 422 are located on different sides of the first driving member 420. The positions of the concave rails 1121 and the convex rails 422 correspond to each other. Thus, the first driving member 420 can be guided by the mounting bracket at different positions, which can improve the guiding accuracy of the mounting bracket on the first driving member 420.

[0093] Or, in such Figure 14 In the embodiment shown, the guide seat 112 is constructed with a vertically extending mounting groove, and the two opposite sides of the mounting groove are constructed with protruding rails 422. The guide seat 112 is mounted on the two sides of the mounting groove corresponding to the protruding rails 422 and has concave rails 1121 that slide with it. Thus, the guide seat 112 and the first driving member 420 can slide with each other from the opposite sides, which can reduce the probability of the first driving member 420 deflecting during movement and improve the reciprocating motion accuracy of the needle bar assembly 100.

[0094] In a specific example, the first cam mechanism and the third drive shaft 50 can be respectively disposed on both sides of the drive body 410 along its own axis, and the second cam mechanism is disposed on the periphery of the drive body 410. In this way, by configuring the first cam mechanism, the second cam mechanism and the third drive shaft 50 on the circumferential side and the axial side of the drive body 410 respectively, the drive body 410 is rotated by the third drive shaft 50, and the power of the drive body 410 is transmitted to the second drive member 430, the third drive member 440 and the first drive member 420, thereby causing the needle bar assembly 100, the needle tip mechanism 200 and the presser foot mechanism 300 to reciprocate periodically. This greatly simplifies the structure of the composite drive assembly 400 and makes full use of the installation space on different sides of the drive body 410, realizing the compact design of the composite drive assembly 400. For the application of the composite drive assembly 400 in the scenario of automatic embroidery machine, it can meet the home use and miniaturization design requirements of automatic embroidery machine.

[0095] In a specific example, the mounting bracket includes a head bracket 11, and a second drive member 430 and a third drive member 440 are rotatably mounted on the head bracket 11. The head component 10 integrates the needle bar assembly 100 and the needle tip mechanism 200, the second drive member 430 and the third drive member 440 through the head bracket 11, which can optimize space utilization and reduce the overall volume.

[0096] In one embodiment, the third drive member 440 has a first drive part 411 and a first lifting part 442. The first drive part 411 is linked with the drive body 410 so that the third drive member 440 is driven by the composite drive assembly 400, thereby driving the presser foot 310 to reciprocate during the embroidery period. The first lifting part 442 is linked with the presser foot 310 so that the presser foot 310 is lifted by the height adjustment assembly 500 during the non-embroidery period.

[0097] In one embodiment, the second drive member 430 has a second drive part 431 and a second lifting part 434. The second drive part 431 is linked with the drive body 410 so that the second drive member 430 is driven by the composite drive assembly 400, thereby driving the needle tip 220 to reciprocate during the embroidery period. The second lifting part 434 is linked with the needle tip support 230 so that the needle tip 220 is lifted by the height adjustment assembly 500 during the non-embroidery period.

[0098] like Figure 13As shown, in one embodiment, both the second driving member 430 and the third driving member 440 include a rotating body 432 and two support arms 433 at a predetermined angle to each other, with one end of each support arm 433 connected to the rotating body 432. For example, the rotating body 432 of the second driving member 430 rotates around a first axis, and the end of one support arm 433 facing away from the rotating body 432 forms a second driving part 431, while the end of the other support arm 433 facing away from the rotating body 432 forms... The second lifting portion 434 and the second driving portion 431 contact the cam profile of the driving body 410. The second lifting portion 434 is used to lift the needle tip 220. The rotating body 432 of the third driving member 440 rotates about the second axis. One of the supporting arms 433 of the third driving member 440 forms the first driving portion 441 at the end facing away from the rotating body 432, and the other supporting arm 433 forms the first lifting portion 442 at the end facing away from the rotating body 432. The first lifting portion 442 is used to lift the pressure foot 310. Thus, when the first driving portion 441 and the second driving portion 431 alternately contact the proximal profile 411a and the distal profile 411b, the second driving member 430 and the third driving member 440 deflect. In response to the deflection of the second driving member 430, the second lifting portion 434 lifts the needle tip 220, and in response to the deflection of the third driving member 440, the first lifting portion 442 lifts the pressure foot 310.

[0099] like Figure 13 In the embodiment shown, the openings defined by the two arms 433 in the second drive member 430 and the openings defined by the two arms 433 in the third drive member 440 are arranged facing each other, so that the first drive part 441 and the second drive part 431 both bend toward the drive body 410, which facilitates the contact between the first drive part 441 and the second drive part 431 and the cam profile 411, thereby achieving a compact design of the head assembly 10.

[0100] Specifically, the connection method between the second lifting part 434 and the needle holder 230 is not limited to abutment, insertion, etc. For example, in one embodiment, the second lifting part 434 abuts against the bottom of the needle holder 230 and supports the needle holder 230. When the second lifting part 434 rises with the swing of the second driving member 430, the second lifting part 434 pushes the needle holder 230 upward, so that the needle 220 is lifted. Alternatively, the second lifting part 434 is inserted into the needle holder 230, and the two can slide together. At the same time, the second lifting part 434 and the needle holder 230 can rotate relative to each other. When the second lifting part 434 rises with the swing of the second driving member 430, the second lifting part 434 abuts against the needle holder 230 and rotates relative to the needle holder 230 while pushing the needle holder 230 upward, so that the needle 220 is lifted.

[0101] Specifically, the connection method between the first lifting part 442 and the pressure foot 310 is not limited to abutment, insertion, etc. For example, in one embodiment, the first lifting part 442 abuts against the lower part of the pressure foot 310 and supports the pressure foot 310. When the first lifting part 442 rises with the swing of the third driving member 440, the first lifting part 442 pushes the pressure foot 310 upward, so that the pressure foot 310 is lifted. Alternatively, the first lifting part 442 and the pressure foot 310 are inserted into each other, and the two can slide together. At the same time, the first lifting part 442 and the pressure foot 310 can rotate relative to each other. When the first lifting part 442 rises with the swing of the third driving member 440, the first lifting part 442 abuts against the pressure foot 310 and rotates relative to the pressure foot 310 while pushing the pressure foot 310 upward, so that the pressure foot 310 is lifted.

[0102] In some embodiments, such as Figure 3 As shown, the automatic embroidery machine also includes a circular shuttle 80 and a circular shuttle drive assembly 600. The circular shuttle 80 is rotatably mounted on the machine base 31 below the corresponding needle 120. The circular shuttle drive assembly 600 drives the circular shuttle 80 to rotate periodically back and forth, which is used to hook the thread when the needle 120 moves up and down back and forth during the embroidery period.

[0103] Specifically, the circular shuttle 80 has a thread guide channel inside. The embroidery thread passes through the thread guide channel from bottom to top to the top of the circular shuttle 80. The fabric is located between the circular shuttle 80 and the needle 120. When the needle 120 pierces the fabric downward and enters the thread hole inside the circular shuttle 80, the needle 120 hooks the embroidery thread. When the needle 120 moves upward, it guides the embroidery thread through the fabric. With the up-and-down reciprocating motion of the needle 120 and the reciprocating rotation of the circular shuttle 80, the needle 120 repeatedly performs the hooking and thread guiding actions to achieve embroidery on the fabric.

[0104] In some embodiments, the shuttle drive assembly 600 can also drive the shuttle 80 to deflect randomly in the needle direction to ensure that the direction of the embroidery thread lead-out on the shuttle 80 is consistent with the orientation of the needle hook, making the embroidery needle hook thread more stable. It is understood that the needle direction can refer to the orientation of the needle hook of the needle 120, or the needle direction can also be the current embroidery direction of the needle 120.

[0105] Understandably, the hook of the needle 120 is used to hold the embroidery thread. Based on the requirements of the embroidery pattern, the orientation of the hook of the needle 120 needs to change continuously with the change of the embroidery direction to change the stitch direction and thus outline the corresponding pattern on the fabric. At the same time, it is necessary to ensure that the orientation of the hook matches the direction of the embroidery thread to stabilize the hooking. If there is an angular deviation between the direction of the embroidery thread and the orientation of the hook, the embroidery thread will come off the hook during the embroidery process. The circular shuttle drive assembly 600 drives the circular shuttle 80 to deflect with the direction of the needle to ensure that the direction of the embroidery thread on the circular shuttle 80 is consistent with the orientation of the hook, making the hooking of the embroidery thread more stable and improving the stability of the embroidery.

[0106] In one embodiment, the ring shuttle drive assembly 600 can synchronously drive the ring shuttle 80 to rotate periodically and deflect randomly according to the needle direction, so that the ring shuttle 80 can adjust the rotation angle while maintaining periodic rotation, so that the direction of the embroidery thread lead is always consistent with the direction of the needle hook during the embroidery period, making the embroidery needle hook thread more stable.

[0107] In one embodiment, the embroidery frame 40 is mounted on the upper side of the machine base 31, the third drive shaft 50 is mounted laterally on the machine arm 33, and the end of the third drive shaft 50 drives the presser foot 310, needle tip 220 and needle 120 to move up and down reciprocally through the composite drive assembly 400; the first drive shaft 60 is mounted below the third drive shaft 50, and the end of the first drive shaft 60 is linked to the needle bar assembly 100; the second drive shaft 70 is mounted laterally on the machine base 31, and the end of the second drive shaft 70 is coupled to the ring shuttle 80 for driving the ring shuttle 80 to rotate.

[0108] In one embodiment, the shuttle drive assembly 600 is connected to the second drive shaft 70 and drives the second drive shaft 70 to move. During the reciprocating movement of the second drive shaft 70 along the axial direction, the shuttle 80 is driven to rotate periodically. When the second drive shaft 70 is driven to rotate around its own axis, the shuttle 80 is driven to deflect in the random needle direction, so that the reciprocating movement of the shuttle 80 along the axial direction and the deflection around the axial direction can be synchronously driven by the second drive shaft 70.

[0109] In some embodiments, the second drive shaft 70 and the shuttle 80 are connected by a cross-axis helical mechanism. The cross-axis helical mechanism includes a first helical gear 71 mounted at the end of the second drive shaft 70 and a second helical gear 81 mounted on the shuttle 80. The cross-axis helical mechanism improves the compactness and economy of the connection between the shuttle and the second drive shaft 70, and can simultaneously transmit rotational power and linear motion power from the second drive shaft 70 to the shuttle 80.

[0110] The shuttle drive assembly 600 can drive the second drive shaft 70 via a single driver or multiple drivers, with each driver connected to the second drive shaft 70 through a transmission mechanism. For example, in one embodiment, a single driver is connected to the second drive shaft 70 via two drive mechanisms, the two drive mechanisms being driven to move and respectively drive the second drive shaft 70 to reciprocate axially and rotate around its own axis; alternatively, in another embodiment, each drive mechanism is connected to one driver and is driven by both drivers to respectively drive the second drive shaft 70 to reciprocate axially and rotate around its own axis. The driver can be configured as a motor, servo motor, etc., capable of outputting rotational power, and the drive mechanism is not limited to a linkage mechanism, cam mechanism, crank-slider mechanism, etc.

[0111] In one embodiment, such as Figure 3As shown, the shuttle drive assembly 600 includes a swing mechanism 610, which is linked to the third drive shaft 50. The second drive shaft 70 is driven by the swing mechanism 610 to reciprocate axially. Since the rotation of the third drive shaft 50 is linked to the up-and-down reciprocating motion of the needle bar assembly 100, the presser foot mechanism 300, and the needle tip mechanism 200, the axial reciprocating movement of the second drive shaft 70 is linked to the reciprocating rotation of the shuttle 80. This allows the needle bar assembly 100, the presser foot mechanism 300, the needle tip mechanism 200, and the shuttle 80 to move simultaneously during embroidery. Furthermore, it facilitates the periodic coordination between the reciprocating rotation of the shuttle 80 and the up-and-down reciprocating movement of the needle 120, making it easier for the needle 120 to hook the embroidery thread, thus making the embroidery process of the automatic embroidery machine smoother and more stable.

[0112] In one embodiment, the third driver 103 drives the third drive shaft 50 to rotate. The reciprocating motion of the second drive shaft 70 along the axial direction and the rotation of the third drive shaft 50 share the third driver 103 as a power source. By integrating the rotation of the third drive shaft 50 and the reciprocating motion of the second drive shaft 70 along the axial direction into the third driver 103 for driving, the structure of the automatic embroidery machine is more compact, which is conducive to the miniaturization and consumer-grade design of the automatic embroidery machine.

[0113] In one embodiment, the swing mechanism 610 includes a cam and a follower. The cam is connected to the output shaft of the third driver 103, and the follower is connected to the second drive shaft 70 and always abuts against the cam profile 411 surface. When the third driver 103 drives the cam to rotate, the follower pushes the second drive shaft 70 to reciprocate as the cam profile 411 rises and falls.

[0114] like Figure 3 and Figure 15 In the embodiment shown, the first end of the third drive shaft 50 is provided with a cylindrical cam 51, and the swing mechanism 610 includes a swing member 611. The upper end of the swing member 611 is coupled to the cylindrical cam 51, and the lower end of the swing member 611 is coupled to the second drive shaft 70. The cylindrical cam 51 rotates with the rotation of the third drive shaft 50, thereby pulling the upper end of the swing member 611 to move, so that the lower end of the swing mechanism 610 drives the second drive shaft 70 to reciprocate.

[0115] Specifically, in one embodiment, one end of the swing member 611 is coupled to the contour groove 501 on the periphery of the cylindrical cam 51. The center of the swing member 611 can be rotatably connected to the frame 30 through the fulcrum 612, for example, rotatably connected to the column 32. When the third driver 103 drives the third drive shaft 50 to rotate, the cylindrical cam 51 rotates synchronously. In response to the rotation of the cylindrical cam 51, the swing member 611 is driven by the contour groove 501, thereby causing the swing member 611 to drive the second drive shaft 70 to reciprocate axially.

[0116] When the cylindrical cam 51 rotates, the contour groove 501 applies an axial force to the linkage 613, causing the swing member 611 to swing around the fulcrum 612 and generate a lateral force, thereby driving the second drive shaft 70 to move axially, causing the ring shuttle 80 coupled to the end of the second drive shaft 70 to rotate. The rotation of the ring shuttle 80 causes the embroidery thread passing through the thread hole to rotate, so that when the needle 120 is inserted into the ring shuttle 80, the embroidery thread rotates around the needle 120. When the needle 120 moves upward, the rotated embroidery thread can be hooked out and wrapped around the needle 120. Afterward, by driving the second drive shaft 70 to reverse and reset, the ring shuttle 80 is driven to rotate in the opposite direction and reset. When the needle 120 is inserted into the ring shuttle 80 again, the above steps are repeated to hook the thread, and so on.

[0117] The upper end of the swing member 611 can be coupled to the contour groove 501 of the cylindrical cam 51 via the linkage 613. For example, the linkage 613 can be configured as a roller, which is slidably connected within the contour groove 501. When the second drive shaft 70 needs to be driven to reciprocate along its axial direction, the third driver 103 drives the cylindrical cam 51 to rotate around its axis. Since the contour groove 501 of the cylindrical cam 51 is helical or curved, the linkage 613, constrained by the contour groove 501, is displaced along the axial direction of the cylindrical cam 51 as the cylindrical cam 51 rotates. The trajectory of the contour groove 501 converts the rotational motion of the cylindrical cam 51 into the linear motion of the linkage 613. The linear motion of the linkage 613 is transmitted to the second drive shaft 70 through the swing member 611, causing the second drive shaft 70 to reciprocate along its axial direction. Through the aforementioned swing mechanism 610, precise control of the reciprocating motion of the second drive shaft 70 is achieved, improving transmission stability. Meanwhile, the parallel arrangement of the cylindrical cam 51 and the second drive shaft 70 is beneficial for optimizing the spatial layout.

[0118] Meanwhile, the second drive shaft 70 is rotatably connected to the swing member 611. Therefore, while the second drive shaft 70 reciprocates axially with the swing member 611, it can still rotate freely around its own axis. When the second driver 102 drives the second drive shaft 70 to rotate to adjust the deflection angle of the ring shuttle 80, the rotational motion is not affected by the swing mechanism 610. The two can work independently and cooperate with each other.

[0119] Furthermore, the first drive shaft 60 is connected to the second drive shaft 70, and the second drive shaft 70 can rotate around its own axis following the rotation of the first drive shaft 60, thereby achieving the angular deflection of the shuttle 80. The second driver 102 is connected to the first drive shaft 60 and drives the first drive shaft 60 to rotate, and the first drive shaft 60 and the second drive shaft 70 are linked. Thus, when the first drive shaft 60 is driven to rotate by the second driver 102, the sleeve 130 follows the rotation of the first drive shaft 60 and drives the needle bar 110 to rotate. At the same time, the second drive shaft 70 follows the rotation of the first drive shaft 60 and drives the shuttle 80 to rotate, so that the rotation of the needle 120 and the shuttle 80 is carried out simultaneously under the drive of the same power source, which can ensure the synchronization of the needle hook direction and the lead direction of the shuttle 80.

[0120] The linkage method between the first drive shaft 60 and the second drive shaft 70 is not limited to the following: Synchronous pulleys are configured on both the first drive shaft 60 and the second drive shaft 70, and a synchronous belt is further wrapped around the synchronous pulleys. When the first drive shaft 60 rotates, the second drive shaft 70 rotates synchronously via belt drive; or, transmission gears are configured on both the first drive shaft 60 and the second drive shaft 70, with the transmission gears directly meshing or indirectly meshing through other transmission gears. When the first drive shaft 60 rotates, the second drive shaft 70 rotates synchronously via gear drive. For example... Figure 3 In the embodiment shown, the first drive shaft 60 and the second drive shaft 70 are connected by a ring shuttle drive belt 620.

[0121] It should be noted that the reciprocating movement of the second drive shaft 70 along the axial direction is powered by the third drive 103, while the rotation of the second drive shaft 70 around its own axis is powered by the second drive 102. Thus, the third drive 103 can simultaneously drive the rotation of the third drive shaft 50 and the reciprocating movement of the second drive shaft 70, while the second drive 102 simultaneously drives the rotation of the first drive shaft 60 and the second drive shaft 70. This highly integrated power source in the automatic embroidery machine reduces production costs and facilitates miniaturization. Furthermore, the integration of the third drive shaft 50, the first drive shaft 60, and the second drive shaft 70 onto the frame 30 achieves a compact design. This integrated layout significantly reduces the size of the automatic embroidery machine, lowers manufacturing costs, and improves economic efficiency, making it suitable for consumer users.

[0122] In one embodiment, the lower end of the swing member 611 is rotatably connected to the second drive shaft 70 along the axial direction of the second drive shaft 70 and abuts against the second drive shaft 70 along the axial direction of the second drive shaft 70; the swing member 611 can drive the second drive shaft 70 to move along the axial direction, and can rotate relative to the second drive shaft 70 when the second drive shaft 70 rotates, and the rotation of the swing member 611 and the second drive shaft 70 about the axial direction does not interfere with each other.

[0123] In one embodiment, the shuttle drive assembly 600 further includes a piston sleeve 630, which is sleeved on the outside of the second drive shaft 70 and movably connected to the second drive shaft 70 along its axial direction. Thus, when the second drive shaft 70 moves axially, the piston sleeve 630 and the second drive shaft 70 move relative to each other axially, and their axial movements do not interfere with each other.

[0124] In one embodiment, the lower end of the swing member 611 is provided with a fork-shaped seat 614, and the fork-shaped seat 614 has a fork groove 615 inside. The end of the second drive shaft 70 is provided with a limiting groove around its periphery. Hinged sliders that slide and engage with the limiting groove are provided on opposite sides of the fork groove 615. The swing member 611 abuts against the hinged sliders along the axial direction of the second drive shaft 70. The fork-shaped seat 614 drives the reciprocating motion of the second drive shaft 70 through the hinged sliders as the swing member 611 swings. The above-mentioned engagement between the second drive shaft 70 and the swing member 611 is compact, rotates smoothly, and is not prone to jamming. The second drive shaft 70 movably passes through the piston sleeve 630. The piston sleeve 630 is constructed with a piston guide groove 631 extending along the axis of the second drive shaft 70. The second drive shaft 70 is fixedly provided with a drive slider 640 that is engaged in the piston guide groove 631. The piston sleeve 630 drives the second drive shaft 70 to rotate through the drive slider 640. The drive slider 640 slides along the piston guide groove 631 in response to the reciprocating movement of the second drive shaft 70.

[0125] This application separates the translation and rotation of the second drive shaft 70, enabling the second drive shaft 70 to move axially relative to the piston sleeve 630 and rotate synchronously. That is, when the linkage 613 is driven by the contour groove 501 to cause the swing member 611 to swing, the piston sleeve 630 does not affect the reciprocating motion of the second drive shaft 70. When it is necessary to control the deflection angle of the shuttle 80, the piston sleeve 630 can be driven to rotate, and the drive slider 640 can act on the second drive shaft 70 to make the second drive shaft 70 and the piston sleeve 630 rotate synchronously to achieve angle deflection control.

[0126] In addition, the shuttle 80 is provided with a shuttle through hole 82 and a thread guide hole 83. The shuttle 80 has a shuttle end face 84 at one end along its axial direction. The shuttle through hole 82 passes through the shuttle 80 axially from the shuttle end face 84. The shuttle through hole 82 is used for the needle 120 to pass through. The shuttle end face 84 is the end of the needle 120 that passes through the shuttle through hole 82. In actual embroidery operations, the shuttle end face 84 can be the upper end face of the shuttle 80. The needle 120 passes through the shuttle through hole 82 vertically to hook the thread and performs vertical reciprocating motion in coordination with the rotation of the shuttle 80 along its own axis to achieve periodic hook embroidery. The lead hole 83 is located on the radial side of the ring shuttle through hole 82. One end of the lead hole 83 forms a lead opening 803 at the end face 84 of the ring shuttle, and the other end of the lead hole 83 communicates with the ring shuttle through hole 82. The lead hole 83 is used for the threading hook to pass through, so as to guide the threading hook into the ring shuttle through hole 82. Thus, the threading hook passes through the lead hole 83 on one side of the ring shuttle through hole 82, and then passes through the lead hole 83 into the ring shuttle through hole 82 for threading. During the threading process, interference between the threading hook and the needle 120 can be avoided, which is beneficial to improving the threading efficiency.

[0127] At least one segment of the lead hole 83 extends in a direction intersecting the shuttle hole 82. For example, the lead hole 83 extending at one end of the shuttle hole 82 forms an acute angle with the shuttle hole 82. This acute angle can be inclined, or the segment of the lead hole 83 near the shuttle hole 82 can be an arc segment to provide guidance when the thread hook reaches the end of the lead hole 83, allowing the thread hook to enter the shuttle hole 82. This application does not limit the specific extension method of the lead hole 83, as long as it ensures that the thread hook can enter the shuttle hole 82.

[0128] It should be noted that before the automatic embroidery machine performs the embroidery operation, the embroidery thread needs to be threaded into the loop shuttle through hole 82. Specifically, the threading hook passes through the thread guide hole 803 located on the end face 84 of the loop shuttle into the thread guide hole 83, and then through the thread guide hole 83 into the loop shuttle through hole 82 until it exits from the lower end of the loop shuttle through hole 82. Then, the threading hook hooks the embroidery thread, and then pulls the threading hook upwards, so that the threading hook passes through the loop shuttle through hole 82 and the thread guide hole 83 in sequence and disengages from the loop shuttle 80. During the withdrawal process, the threading hook pulls the embroidery thread through the loop shuttle through hole 82 and the thread guide hole 83 in sequence, and leads it out from the end face 84 of the loop shuttle, thus completing the threading operation. After the threading operation is completed, the needle 120 on the embroidery machine can be inserted downward into the loop shuttle through hole 82 to hook the thread. The needle 120 moves back and forth in the vertical direction periodically, and the loop shuttle 80 rotates around its own axis. The two work together to realize the embroidery operation. The rotation angle of the loop shuttle 80 can be adjusted according to the requirements of the embroidery.

[0129] Reference Figure 17The frame 30 includes a needle plate structure 34, which has a thread outlet 341 and a needle hole 342. A ring shuttle 80 is located below the needle plate structure 34 and is rotatably connected to the frame 30 around its axial direction. The thread outlet 341 is vertically aligned with the lead hole 83, allowing the lead hole 83 to be exposed upwards on the needle plate structure 34. The thread outlet 341 communicates with the lead hole 83 for threading a threading hook into the lead hole 83. The needle hole 342 is vertically aligned with and communicates with the ring shuttle through hole 82. The thread outlet 341 on the needle plate structure 34 exposes the lead hole 83, facilitating observation of the lead hole 803 position. The threading hook can directly insert into the lead hole 83, eliminating the need to simultaneously align the opening on the needle plate structure 34 with the lead hole 803, making threading more convenient and efficient.

[0130] Specifically, the needle hole 342 is located above the shuttle hole 82, and the two are vertically opposite each other. The needle hole 342 is used for the needle 120 to pass through. The needle 120 passes through the needle hole 342 and into the shuttle hole 82. The lower end of the shuttle hole 82 is used for the embroidery thread to pass through. After the embroidery thread passes through the shuttle hole 82, the thread hook passes through the thread outlet 341 and into the thread guide hole 83. The cross-sectional area of ​​the thread outlet 341 is larger than the cross-sectional area of ​​the thread guide hole 803, so that the thread guide hole 803 of the thread guide hole 83 is exposed. The thread hook passes through the thread guide hole 83 and into the shuttle hole 82 to hook the thread. While retaining the needle plate, the obstruction of the threading is avoided, making the threading more convenient and helping to further improve the threading efficiency.

[0131] It should be noted that the automatic embroidery machine in this application can realize automated embroidery on fabrics. That is, during the embroidery period, the fabric can move automatically according to the pattern pre-input by the system, so that the machine head component 10 can continuously embroider on the fabric, shorten downtime, and improve embroidery efficiency.

[0132] The fabric is fixed in place by the embroidery frame 40, as shown in the reference. Figure 17 and Figure 18 The embroidery frame 40 includes an upper frame 41 and a lower frame 42. The middle areas of the upper frame 41 and lower frame 42 are open. The upper frame 41 and lower frame 42 can be fastened together magnetically or by snap-fit. The fabric is fixed between the upper frame 41 and lower frame 42, and is exposed in the open areas of the upper frame 41 and lower frame 42. The exposed areas are the embroidery work areas. In the case where the upper frame 41 and lower frame 42 are magnetically connected, a gap can be set between them to reduce the magnetic strength, facilitating the disassembly of the embroidery frame 40 and replacement of the fabric.

[0133] In one embodiment, the automatic embroidery machine includes an embroidery frame drive device 20. The embroidery frame 40 is moved by the embroidery frame drive device 20. During the embroidery period, the embroidery frame drive device 20 drives the embroidery frame 40 to move, so that the needle 120, the needle tip 220 and the presser foot 310 embroider at different positions on the fabric. Through continuous and automated embroidery actions, a preset pattern is embroidered on the fabric.

[0134] In some embodiments, the embroidery frame drive device 20 can drive the embroidery frame 40 to move along the first direction and the second direction, so that the movement of the embroidery frame 40 can take into account any position of the fabric working surface.

[0135] In one embodiment, the embroidery frame driving device 20 includes an embroidery frame mounting part 21, a first moving part 22, and a first driving device 23. At least a portion of the embroidery frame mounting part 21 is located between the machine base 31 and the machine arm 33. The side of the embroidery frame mounting part 21 facing away from the column 32 is used to load the embroidery frame 40 and to move the embroidery frame 40 along a second direction. The first moving part 22 is movably connected to the machine base 31 and / or the column 32 along the first direction and is connected to the embroidery frame mounting part 21 to drive the embroidery frame mounting part 21 to move along the first direction, which is perpendicular to the second direction. The first driving device 23 is used to drive the first moving part 22 to move along the first direction.

[0136] The first driving device 23 drives the first moving part 22 to move along a first direction, thereby causing the embroidery frame 40, which is connected to the first moving part 22 via the embroidery frame mounting part 21, to move along the first direction. Simultaneously, the embroidery frame mounting part 21 itself drives the embroidery frame 40 to move along a second direction, thus achieving precise movement of the embroidery frame 40 in two vertical directions. This improves the efficiency and precision of the embroidery frame 40's movement, thereby increasing production efficiency and precision. By mounting the embroidery frame 40 on the side of the embroidery frame mounting part 21 facing away from the column 32, the first driving device 23 can control the first moving part 22 to move closer to the column 32 when needed, causing the embroidery frame mounting part 21 connected to it to move relative to the column 32. The machine is retracted, thus freeing up a large space above and around the base 31, forming a working area free from mechanical interference. This facilitates the placement of tubular or bag-shaped garments on the free end of the base 31 to meet the functional requirements of garment embroidery. By connecting the first moving part 22 to the base 31 and / or the column 32, and connecting the embroidery frame mounting part 21 to the first moving part 22, the mass of the first moving part 22 and the embroidery frame mounting part 21 is concentrated in the low-lying areas such as the base 31 and the column 32. At the same time, the first driving device 23 is used to drive the first moving part 22 located in the low-lying area to move. The core mass of the power system can also be lowered, thereby significantly reducing the overall center of gravity of the equipment and improving the stability of operation.

[0137] In one embodiment, reference is made to Figure 20The embroidery frame mounting part 21 has a connecting mechanism 201, which abuts against the machine arm 33 and is movable relative to the machine arm 33 in a first direction to prevent the embroidery frame mounting part 21 and the first moving part 22 from circumferentially deflecting in the first direction. It is understood that the connecting mechanism 201 may also be used only to prevent the embroidery frame mounting part 21 from circumferentially deflecting in the first direction, or only to prevent the first moving part 22 from circumferentially deflecting in the first direction.

[0138] In this embodiment, by setting a connecting mechanism 201, its upper end is movably connected to the machine arm 33 along the first direction and abuts against the machine arm 33. When the embroidery frame mounting part 21 and the first moving part 22 are subjected to external force and have a tendency to deflect around the first direction, the abutting contact between the connecting mechanism 201 and the machine arm 33 can generate an effective restraining force to prevent them from deflecting, ensuring that the embroidery frame mounting part 21 and the first moving part 22 always maintain the correct posture and move, thereby improving the movement stability of the embroidery frame 40.

[0139] In one embodiment, the connecting mechanism 201 abuts against the machine arm 33 in a second direction; or, in another embodiment, the connecting mechanism 201 abuts against the machine arm 33 in a third direction.

[0140] Furthermore, the arm 33 has a clearance groove 303 extending along a first direction. The clearance groove 303 can be specifically disposed in the third housing 94. The connecting mechanism 201 is slidably connected to the clearance groove 303 along the first direction. The clearance groove 303 can provide a moving guide along the first direction for the movement of the connecting mechanism 201.

[0141] In one embodiment, the clearance groove 303 is disposed on the side wall of the third housing 94. The side wall may be one of the side walls of the third housing 94 along the second direction, or two opposite side walls of the third housing along the second direction. A portion of the connecting mechanism 201 is accommodated in the clearance groove 303 and is movable along the extension direction of the clearance groove 303. A portion of the connecting mechanism 201 abuts against the side wall of the third housing 94.

[0142] In one embodiment, the clearance groove 303 extends through the sidewall of the third housing 94 along a second direction, and a portion of the connecting mechanism 201 is accommodated inside the third housing 94, with a portion of the connecting mechanism 201 abutting against the sidewall of the third housing 94. Alternatively, in another embodiment, the clearance groove 303 is recessed into the sidewall of the third housing 94, and a portion of the connecting mechanism 201 is accommodated within the clearance groove 303, with a portion of the connecting mechanism 201 abutting against the inner wall of the clearance groove 303.

[0143] In one embodiment, there is a gap between the bottom surface of the connecting mechanism 201 and the top wall of the clearance groove 303, so that there is a gap between the connecting mechanism 201 and the clearance groove 303 in the vertical direction. The machine arm 33 does not provide longitudinal support to the embroidery frame mounting part 21 and the first moving part 22, thereby avoiding the high center of gravity defect caused by the machine arm 33 bearing the weight, and further improving the stability of the equipment operation.

[0144] In one embodiment, the first moving part 22 is located below or beside the embroidery frame mounting part 21, and the first driving device 23 is connected to the first moving part 22 and drives the embroidery frame mounting part 21 to move along the first direction through the first moving part 22; in this way, the driving mechanism of the embroidery frame 40 is further lowered, the center of gravity of the embroidery frame driving device 20 is lowered, and the fit between the embroidery frame 40 and the first driving device 23 is more compact, reducing the shaking of the embroidery frame 40 during the movement, making the movement of the embroidery frame 40 more stable, and improving the embroidery quality.

[0145] In order to ensure that the mass distribution of the first driving device 23 is sufficiently lowered, in some embodiments, the first driving device 23 may be further positioned at least partially below the embroidery frame mounting portion 21, and the connection position between the output end of the first driving device 23 and the first moving portion 22 may be located below the embroidery frame mounting portion 21.

[0146] In some embodiments, the first drive device 23 is arranged on the base 31 or the column 32 to further lower the center of gravity of the embroidery frame drive device 20, reduce the swaying of the embroidery frame 40 during movement, and make the movement of the embroidery frame 40 more stable.

[0147] The first driving device 23 includes a plurality of first transmission wheels 2031, a first transmission belt 2032, and a first driving source 2033. The plurality of first transmission wheels 2031 are rotatably connected to the first bracket 24 around their own central axis, and the central axis of the first transmission wheels 2031 is parallel to the second direction. The first transmission belt 2032 is arranged around the plurality of first transmission wheels 2031 to form a ring transmission circuit. The first driving source 2033 is driven to at least one first transmission wheel 2031 to provide it with rotational driving force. The first moving part 22 is connected to the first transmission belt 2032. When the first driving source 2033 drives the first transmission wheel 2031 to rotate, the first transmission belt 2032 moves cyclically, driving the first moving part 22 connected to it to move along the first direction.

[0148] In this embodiment, the first drive source 2033 can be configured as a motor. A reliable power transmission between the first drive device 23 and the first moving part 22 is achieved through a transmission structure consisting of a drive wheel and a drive belt. The drive belt transmission features smooth operation, low noise, and strong vibration absorption, effectively buffering the impact and vibration during high-speed movement. In some embodiments of this application, the first drive wheel 2031 is a synchronous pulley, and the first drive belt 2032 is a synchronous belt, resulting in smooth transmission and high precision.

[0149] The embroidery frame mounting part 21 is connected to the upper side of the first bracket 24 via the first moving part 22. The lower end of the first moving part 22 is slidably connected to the first support shaft 25. The first support shaft 25 not only provides sliding guidance for the first moving part 22, but also provides longitudinal support for the embroidery frame mounting part 21.

[0150] The embroidery frame mounting part 21 includes a second bracket 202, a second movable part 203, and a second driving device 204. The second bracket 202 is connected to the upper end of the first movable part 22 and moves together with the first movable part 22 along a first direction. The connection between the two can be made by bolting, snap-fitting, welding, or other methods. The second movable part 203 is movably connected to the second bracket 202 along a second direction. The end of the second movable part 203 facing away from the column 32 is used to load the embroidery frame 40. The second driving device 204 is mounted on the second bracket 202 and is used to drive the second movable part 203 to reciprocate along the second direction, thereby driving the embroidery frame 40 to reciprocate along the second direction.

[0151] In this embodiment, a power system in the second direction is constructed by setting a second support 202, a second moving part 203, and a second driving device 204. This system is independent of the power system in the first direction (i.e., the first driving device 23), realizing the functional decoupling of the embroidery frame 40 in the two directions of movement. The second moving part 203 is movably connected to the second support 202 along the second direction, while the second support 202 can move along the first direction with the first moving part 22, jointly realizing the precise positioning of the embroidery frame 40 in the two-dimensional plane.

[0152] The second drive device 204 includes a plurality of second drive wheels 2041, a second drive belt 2042, and a second drive source 2043. The plurality of second drive wheels 2041 are rotatably mounted on a second bracket 202 around their own central axis, with the central axis of the second drive wheels 2041 parallel to a first direction. The second drive belt 2042 is arranged around the plurality of second drive wheels 2041, forming a circular transmission loop. The second drive source 2043 is drively connected to at least one second drive wheel 2041, providing it with rotational driving force. A second moving part 203 is connected to the second drive belt 2042. When the second drive source 2043 drives the second drive wheel 2041 to rotate, the second drive belt 2042 circulates, causing the connected second moving part 203 to move along the first direction. In this embodiment, the second drive source 2043 can be configured as a motor. By adopting a transmission structure of transmission wheel + transmission belt, reliable power transmission between the second drive device 204 and the second moving part 203 is realized. The transmission belt transmission has the characteristics of smooth operation, low noise and strong vibration absorption, which can effectively buffer the impact and vibration during high-speed movement.

[0153] Reference Figure 21 and Figure 22 The embroidery frame mounting part 21 may include an embroidery frame 43, the second moving part 203 is configured as the embroidery frame 43, or the embroidery frame 43 is connected to the second moving part 203, the embroidery frame 40 includes a support plate member 44, the support plate member 44 is configured with a first latch 4041, the embroidery frame 43 is configured with a first latch 4031 and an embroidery frame locking device, the embroidery frame 40 is latched into the first latch 4031 through the first latch 4041 and rotates around it, and is detachably coupled to the support plate member 44 through the embroidery frame locking device.

[0154] Furthermore, the tray member 44 also includes a second latch 4042, and the embroidery frame 43 is provided with a second latching part 4032. The embroidery frame 40 is engaged with the first latching part 4031 through the first latch 4041 and rotates around it to cause the second latch 4042 to engage with the second latching part 4032. It is detachably coupled to the tray member 44 through an embroidery frame locking device, so that the second latch 4042 is kept engaged with the second latching part 4032. The tray member 44 can be constructed on the side of the embroidery frame 40, and the first latch 4041 and the second latch 4042 are arranged at both ends of the tray member 44 and communicate with the sides of the tray member 44 along the vertical second direction and the first direction, respectively.

[0155] The first locking part 4031 includes a first pin, and the second locking part 4032 includes a second pin. The embroidery frame locking device is arranged on the opposite side of the first locking slot 4041 along the second direction. The embroidery frame 40 engages with the first pin through the first locking slot 4041 and rotates around it to engage the second pin through the second locking slot 4042. The embroidery frame locking device is detachably coupled to the side of the support plate member 44 opposite to the first locking slot 4041, so that the second locking slot 4042 is held in place on the second pin. The first pin and the second pin can be located on the lower side of the embroidery frame 43.

[0156] The embroidery frame locking device includes a latch 45 and a first spring 46. The latch 45 is rotatably connected to the embroidery frame 43, and the first spring 46 acts between the embroidery frame 43 and the latch 45 to provide an elastic force to the latch 45 to rotate in the locking direction.

[0157] The embroidery frame 43 is equipped with an embroidery frame ejection device. When the embroidery frame 40 is loaded onto the embroidery frame 43, the support plate member 44 presses against the embroidery frame ejection device, causing the embroidery frame ejection device to store energy. When the embroidery frame ejection device releases energy, it can push the support plate member 44. The embroidery frame ejection device includes a pressure spring 47. When the embroidery frame 40 is loaded onto the embroidery frame 43, the elastic potential energy of the pressure spring 47 increases, and the pressure spring 47 has a tendency to push the embroidery frame 40 in the opposite direction to the assembly direction of the embroidery frame 40.

[0158] In addition, the tray component 44 is equipped with one or more triggering parts, and one or more detection elements are disposed on the embroidery frame 43 that loads the embroidery frame 40. The triggering parts may include triggering protrusions 4043. The number and position of triggering protrusions 4043 are different for different types of embroidery frames 40. When the embroidery frame 40 is loaded onto the embroidery frame 43, the triggering protrusions 4043 trigger the corresponding sliding triggers 4044. The detection elements feed back detection signals to the control module according to the corresponding triggered sliding triggers 4044. The control module determines the type of embroidery frame 40 based on the feedback signal. By identifying the type of embroidery frame 40 through the number and position of triggering protrusions 4043, the complex problem of relying on the position of protrusions / dimples in the prior art is solved. The structure of the embroidery frame type is simple and reliable, realizing the rapid classification of the embroidery frame 40. Moreover, the classification of the embroidery frame 40 can be realized during the loading process of the embroidery frame 40, which is highly practical.

[0159] The two ends of the return spring 4045 abut against the sliding trigger 4044 and the identification bracket 4046 respectively, and the return spring 4045 is used to reset the sliding trigger 4044 after sliding. The identification bracket 4046 is also provided with a guide groove 4047, and the sliding trigger 4044 is provided with a guide protrusion 4048. The guide protrusion 4048 is slidably connected in the guide groove 4047, and the guide groove 4047 provides guidance for the sliding of the sliding trigger 4044.

[0160] Reference Figure 23The automatic embroidery machine also includes a housing 90, in which the machine arm 33, column 32, and part of the base 31 can be accommodated. The first moving part 22 is located on the outside of the housing 90 to facilitate the loading of the embroidery frame 40. The portion of the housing 90 that accommodates the machine arm 33 is equipped with an operation module 91 on the side along the first direction and / or the side along the second direction. The operation module 91 includes one or more of a display screen, buttons, a touch panel, and a mobile terminal. For example, the touch panel and display screen are located on the front side of the housing 90 to facilitate user observation or input of commands, while the buttons, wiring terminals, etc., are located on the side of the housing 90 along the first direction to avoid interference between the wiring and the embroidery thread.

[0161] For example, the portion of housing 90 used to accommodate base 31 is the first housing 92, the portion used to accommodate column 32 is the second housing 93, and the portion used to accommodate arm 33 is the third housing 94. The second housing 93 is connected to the top of the first housing 92 and is located at one end of the first housing 92 along the first direction, and the third housing 94 is connected to the top of the second housing 93 and extends along the first direction.

[0162] The first housing 92 has a lead-in space located below the ring shuttle 80, and a spool support 95 is used to hold the spool. The first housing 92 also has a thread channel 921 that communicates with the lead-in space, allowing the embroidery thread from the spool in the spool support 95 to pass through the thread channel 921 and the lead-in space before entering the ring shuttle 80.

[0163] Since the shuttle 80 is located on the base 31, and the lead wire space is located below the shuttle 80 and connected to the wire routing groove 921 on the base 31, the embroidery thread loaded on the spool support 95 can first enter the interior of the base 31 through the wire routing groove 921, then pass through the lead wire space below the shuttle 80, and then enter the shuttle 80. This allows the shuttle 80 to provide embroidery thread to the fabric located on the side of the base 31 where the shuttle 80 is located. The embroidery thread enters the interior of the shuttle 80 through the space below it, avoiding occupying the space above the shuttle 80, reducing the contact between the embroidery thread and the fabric during the embroidery process, and improving the stability of the embroidery thread conveying and the stability of the fabric embroidery effect.

[0164] In some embodiments, the thread guide 921 is located on the side of the base 31 and above the thread guide space. With this design, the embroidery thread can enter the base 31 from the side of the first housing 92, further avoiding occupying the space above the first housing 92. This helps reduce contact between the embroidery thread and the fabric during embroidery, improving the stability of thread feeding and the stability of the embroidery effect. On the other hand, if the embroidery thread entering the first housing 92 from the thread guide 921 is located above the thread guide space, the thread will first move downwards, then bend and move upwards at the thread guide space, finally entering the ring shuttle 80. This design, by causing the embroidery thread to bend at the thread guide space, helps to tighten the thread, ensuring a continuous and stable entry of the embroidery thread into the ring shuttle 80.

[0165] On the same side of the first outer casing 92, there is a mounting member 922 and a thread routing groove 921. The mounting member 922 is used to hold the embroidery thread, which can sequentially enter the shuttle 80 through the mounting member 922, the thread routing groove 921, and the thread guide space. The mounting member 922 restricts the movement direction of the embroidery thread, and the thread guide path can be changed by the mounting mechanism. Since the mounting member 922 is located on the side of the machine base 31 with the thread routing groove 921, the embroidery thread held in the mounting member 922 is spaced from the thread routing groove 921, which helps to reduce the large-area contact between the embroidery thread and the machine base 31, thereby reducing friction between the embroidery thread and the machine base 31.

[0166] The spool support 95 is located on the side of the housing 90. Positioning the spool support 95 on the side of the housing 90 avoids it occupying space above the machine base 31, which helps reduce contact between the embroidery thread and the fabric during the embroidery process, improving the stability of the embroidery thread conveying and the stability of the embroidery effect on the fabric.

[0167] In one embodiment, the thread guide 921, the mounting component 922, and the spool support 95 are located on the same side of the machine base 31 and arranged along a first direction. Through this scheme, the embroidery thread can move sequentially from the spool support 95 and the mounting component 922 to the thread guide 921 along the first direction. This scheme keeps the portion of the embroidery thread on the outer side of the machine base 31 in the same direction, simplifies the length of the embroidery thread's movement on the outer side, reduces the contact between the embroidery thread and the fabric during embroidery, improves the stability of the embroidery thread conveying and the stability of the embroidery effect on the fabric, and also facilitates direct inspection of the portion of the embroidery thread on the outer side of the machine base 31 by the operator, improving the operator's inspection efficiency and contributing to the stable operation of the embroidery machine.

[0168] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An automatic embroidery machine, characterized in that, include: The frame has a base extending in a first direction, a column extending upward from the front end of the base, and a machine arm extending in the first direction from the upper end of the column. A needle bar assembly is mounted on the machine arm, the needle bar assembly including a needle bar and a needle assembled at the lower end of the needle bar; A needle tip mechanism is mounted on the machine arm, and the needle tip mechanism includes a needle tip rod and a needle tip mounted on the lower end of the needle tip rod; A presser foot mechanism is mounted on the machine arm, and the presser foot mechanism includes a presser foot. A composite drive assembly is connected to the needle bar, the needle tip bar, and the presser foot, and is used to drive the needle, the needle tip, and the presser foot to reciprocate vertically during the embroidery period. The maximum heights at which the needle, the needle tip, and the presser foot are raised during the embroidery period are the first needle height, the first needle tip height, and the first presser foot height, respectively. A height adjustment component is connected to the needle bar, the needle tip bar, and the presser foot, and is used to raise the needle, the needle tip, and the presser foot during non-embroidery periods. The maximum heights to which the needle, the needle tip, and the presser foot are raised during the non-embroidery periods are the second needle height, the second needle tip height, and the second presser foot height, respectively. and: The height of the second needle is greater than the height of the first needle; and / or, The height of the second needle tip is greater than the height of the first needle tip; and / or, The height of the second presser foot is greater than the height of the first presser foot.

2. The automatic embroidery machine according to claim 1, characterized in that, The height adjustment assembly further includes a locking mechanism, and the needle bar assembly further includes a sleeve. A portion of the needle bar is inserted into the sleeve and threadedly connected to it. The locking mechanism is used to lock the relative rotation between the needle bar and the sleeve to switch to a locked state, or to unlock the relative rotation between the needle bar and the sleeve to switch to an unlocked state. In the locked state, the needle can deflect in response to the rotation of the sleeve; In the unlocked state, the needle can change its height in response to the rotation of the sleeve.

3. The automatic embroidery machine according to claim 2, characterized in that, The locking mechanism includes a rotation limiting member. In the locked state, the rotation limiting member abuts against the needle bar and the sleeve along the circumference of the needle bar. In the unlocked state, the rotation limiting member separates from the sleeve and abuts against the needle bar along the circumference of the needle bar.

4. The automatic embroidery machine according to claim 3, characterized in that, The locking mechanism further includes a locking member, which includes an axial channel. The sleeve passes through the axial channel and is rotatably connected to the locking member. The rotation limiting member is movably connected to the locking member and can be driven to move relative to the locking member so that the relative rotation between the needle bar and the sleeve switches to the locked state or the unlocked state.

5. The automatic embroidery machine according to claim 2, characterized in that, The locking mechanism includes a locking element, a rotating limiting element, and a spring. The locking element has an axial channel, a radially extending groove, a first locking groove formed on the outer wall at one end of the groove, and a slot formed at the other end of the groove. A second locking groove is formed on the outer side of the upper end of the sleeve. The rotating limiting element is assembled in the groove and has a protrusion that cooperates with the second locking groove. The needle rod and the rotating limiting element are vertically movably adapted to each other. The spring is assembled in the slot and elastically acts on the rotating limiting element to move towards the first locking groove and cooperate with the second locking groove. In response to the insertion of the first locking groove into the unlocking object, which pushes the rotating limiting member to disengage the protrusion from the second locking groove, the needle can change its height in response to the rotation of the sleeve.

6. The automatic embroidery machine according to any one of claims 3 to 5, characterized in that, The height adjustment assembly includes a first driver and a locking mechanism. The locking mechanism includes a movable locking member connected to the first driver. In response to the drive of the first driver, the movable locking member pushes the rotation limit member to move, thereby switching the locked state to the unlocked state.

7. The automatic embroidery machine according to claim 6, characterized in that, The locking mechanism further includes a locking gear and a first cam pin mechanism disposed between the locking gear and the movable locking member. The first driver drives the locking gear to rotate, thereby driving the movable locking member to move through the first cam pin mechanism.

8. The automatic embroidery machine according to claim 1, characterized in that, The height adjustment assembly includes a drive gear and a first driver, the first driver driving the drive gear to rotate. The needle tip mechanism includes a needle tip support, the needle tip support being connected to the needle tip rod. The needle tip support is configured with a needle tip support engagement portion that engages with a first actuator. The first actuator is an extension constructed on the side of the drive gear, and the first actuator is capable of lifting the needle tip support engagement portion upward.

9. The automatic embroidery machine according to claim 1, characterized in that, The height adjustment assembly includes a drive back plate, a drive gear, and a first driver. The drive gear has a first actuation part on its side. The presser foot mechanism includes a presser foot drive plate, which is vertically and movably mounted on the drive back plate. The presser foot drive plate is equipped with a first drive arm, which is used to connect the presser foot. A second cam pin mechanism is provided between the drive gear and the presser foot drive plate. The first driver drives the drive gear to rotate, thereby driving the presser foot to rise through the second cam pin mechanism.

10. The automatic embroidery machine according to claim 2, characterized in that, The automatic embroidery machine also includes a first drive shaft and a second driver. The second driver and the rod sleeve are both connected to the first drive shaft. The second driver drives the rod sleeve to rotate through the first drive shaft.

11. The automatic embroidery machine according to claim 1, characterized in that, The composite drive assembly includes a drive body for connecting to a third drive shaft and for rotating under the drive shaft; wherein... The composite drive assembly further includes a first drive member, which is used to connect the needle bar assembly. The drive body is linked with the first drive member to make the needle bar assembly reciprocate vertically during the embroidery period. And / or, the needle tip mechanism includes a needle tip support mounted on the needle tip bar, and the composite drive assembly further includes a second drive member, which is linked to the drive body and connected to the needle tip support. In response to the deflection of the second drive member, the needle bar assembly reciprocates vertically. And / or, the composite drive assembly further includes a third drive member, which is linked to the drive body and connected to the pressure foot. In response to the deflection of the third drive member, the pressure foot assembly reciprocates vertically.

12. The automatic embroidery machine according to claim 11, characterized in that, The drive body is linked to the first drive member through the first cam mechanism. The first cam mechanism includes an eccentric cam cylinder and a curved groove. The eccentric cam cylinder and the curved groove are slidably engaged. One of the eccentric cam cylinder and the curved groove is constructed in the drive body, and the other is constructed in the first drive member. And / or, the third driving member has a first driving part, the second driving member has a second driving part, the driving body links the first driving part and the second driving part through a second cam mechanism, the second cam mechanism includes a cam profile constructed on the surface of the driving body, and both the first driving part and the second driving part are in contact with the cam profile.

13. The automatic embroidery machine according to claim 11, characterized in that, The third driving component has a first driving part and a first lifting part, the first driving part is linked with the driving body, and the first lifting part is linked with the pressure foot. And / or, the second driving member has a second driving part and a second lifting part, the second driving part being linked with the driving body, and the second lifting part being linked with the needle holder.

14. An automatic embroidery machine, characterized in that, include: The frame has a base extending in a first direction, a column extending upward from the front end of the base, and a machine arm extending in the first direction from the upper end of the column. A needle bar assembly is mounted on the machine arm, the needle bar assembly including a needle bar and a needle assembled at the lower end of the needle bar; A needle tip mechanism is mounted on the machine arm, and the needle tip mechanism includes a needle tip rod and a needle tip mounted on the lower end of the needle tip rod; A presser foot mechanism is mounted on the machine arm, and the presser foot mechanism includes a presser foot. A composite drive assembly is connected to the needle bar, the needle tip bar, and the presser foot, and is used to drive the needle, the needle tip, and the presser foot to reciprocate vertically during the embroidery period. The maximum heights at which the needle, the needle tip, and the presser foot are raised during the embroidery period are the first needle height, the first needle tip height, and the first presser foot height, respectively. A height adjustment assembly, connected to the needle bar, the needle tip bar, and the presser foot, is used to raise the needle, the needle tip, and the presser foot during non-embroidery periods. The maximum heights to which the needle, the needle tip, and the presser foot are raised during the non-embroidery periods are respectively the second needle height, the second needle tip height, and the second presser foot height, and: The height of the second needle is greater than the height of the first needle; and / or, The height of the second needle tip is greater than the height of the first needle tip; and / or, The height of the second presser foot is greater than the height of the first presser foot; Embroidery frame, used to hold the fabric to be embroidered; An embroidery frame driving device is provided, wherein the embroidery frame is connected to the embroidery frame driving device, and the embroidery frame driving device is used to drive the embroidery frame to move.

15. The automatic embroidery machine according to claim 14, characterized in that, The embroidery frame driving device includes: an embroidery frame mounting part, at least partially located between the machine base and the machine arm, wherein the side of the embroidery frame mounting part facing away from the column is used to load the embroidery frame and to move the embroidery frame in a second direction; A first movable part is movably connected to the base along the first direction or movably connected to the base and the column along the first direction, and is connected to the embroidery frame mounting part to drive the embroidery frame mounting part to move along the first direction, wherein the first direction is perpendicular to the second direction; A first driving device is used to drive the first moving part to move along the first direction.

16. The automatic embroidery machine according to claim 15, characterized in that, The embroidery frame mounting part has a connecting mechanism that abuts against the machine arm and is capable of moving relative to the machine arm along the first direction.

17. The automatic embroidery machine according to claim 16, characterized in that, The arm has a clearance groove extending along the first direction, and the connecting mechanism is slidably connected to the clearance groove along the first direction.

18. The automatic embroidery machine according to claim 15, characterized in that, The first movable part is located below or beside the embroidery frame mounting part; And / or, the first driving device is located below the first moving part; And / or, the first drive unit is disposed on the base or the column.

19. An automatic embroidery machine, characterized in that, include: The frame has a base extending in a first direction, a column extending upward from the front end of the base, and a machine arm extending in the first direction from the upper end of the column. A needle bar assembly is mounted on the machine arm, the needle bar assembly including a needle bar and a needle assembled at the lower end of the needle bar; A needle tip mechanism is mounted on the machine arm, and the needle tip mechanism includes a needle tip rod and a needle tip mounted on the lower end of the needle tip rod; A presser foot mechanism is mounted on the machine arm, and the presser foot mechanism includes a presser foot. A composite drive assembly is connected to the needle bar, the needle tip bar, and the presser foot, and is used to drive the needle, the needle tip, and the presser foot to reciprocate vertically during the embroidery period. The maximum heights at which the needle, the needle tip, and the presser foot are raised during the embroidery period are the first needle height, the first needle tip height, and the first presser foot height, respectively. A height adjustment assembly, connected to the needle bar, the needle tip bar, and the presser foot, is used to raise the needle, the needle tip, and the presser foot during non-embroidery periods. The maximum heights to which the needle, the needle tip, and the presser foot are raised during the non-embroidery periods are respectively the second needle height, the second needle tip height, and the second presser foot height, and: The height of the second needle is greater than the height of the first needle; and / or, The height of the second needle tip is greater than the height of the first needle tip; and / or, The height of the second presser foot is greater than the height of the first presser foot; The ring shuttle is located below the needle bar assembly; A shuttle drive assembly is used to drive the shuttle to rotate periodically and to deflect synchronously in a random needle direction.

20. The automatic embroidery machine according to claim 19, characterized in that, The shuttle drive assembly includes a second drive shaft, which is coupled to the shuttle drive. The shuttle is driven to reciprocate and rotate due to the reciprocating movement of the second drive shaft along its own axis, and is also driven to deflect due to the rotation of the second drive shaft about its own axis.

21. The automatic embroidery machine according to claim 20, characterized in that, The composite drive assembly includes a third drive shaft. The needle bar assembly, the needle tip mechanism, and the presser foot mechanism are all linked to the third drive shaft and reciprocate during the embroidery period driven by the rotation of the third drive shaft. The second drive shaft is linked to the third drive shaft and reciprocates along its own axis in response to the rotation of the third drive shaft.

22. The automatic embroidery machine according to claim 21, characterized in that, The third drive shaft is provided with a cylindrical cam, and the shuttle drive assembly includes a swing mechanism. The swing mechanism includes a swing member, the upper end of which is coupled to the cylindrical cam, and the lower end of which is coupled to the second drive shaft.

23. The automatic embroidery machine according to claim 22, characterized in that, The lower end of the swing member is rotatably connected to the second drive shaft along the axial direction of the second drive shaft, and abuts against the second drive shaft along the axial direction of the second drive shaft; and / or, The shuttle drive assembly further includes a piston sleeve, which is sleeved on the outside of the second drive shaft and movably connected to the second drive shaft along the axial direction of the second drive shaft.

24. The automatic embroidery machine according to claim 20, characterized in that, The needle bar assembly further includes a sleeve, the needle bar is inserted into the sleeve and threadedly connected to the sleeve, the height adjustment assembly includes a first drive shaft and a second driver, the second driver is connected to the first drive shaft and is used to drive the first drive shaft to rotate, the first drive shaft is connected to the sleeve and drives the sleeve to rotate, so that the needle bar rotates or changes its height; the second drive shaft is drivenly connected to the first drive shaft and rotates synchronously.

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