Mixing machine head structure of computerized embroidery machine

Abstract

The embodiment of the invention relates to the technical field of computerized embroidery machines, in particular to a computerized embroidery machine mixed machine head structure which comprises at least one taping embroidery machine head. At least one plain embroidery machine head; the rotating shuttle assembly is matched with the lower part of the taping embroidery machine head or the plain embroidery machine head; the first embroidery needle driving shaft is connected with all taping embroidery machine heads; the second embroidery needle driving shaft is connected with all the plain embroidery machine heads; the rotating shuttle driving shaft is connected with all the rotating shuttle assemblies; the power device I is connected with the first embroidery needle driving shaft and is used for driving the first embroidery needle driving shaft to rotate; and the power device II is connected with the second embroidery needle driving shaft. According to the mixed machine head structure of the computerized embroidery machine, parts of a flat embroidery machine head cannot be abraded when the taping embroidery machine head works, and the parts of the taping embroidery machine head cannot be abraded when the flat embroidery machine head works, so that the abrasion degree of the parts of the machine head can be effectively reduced under the same working duration.

Description

Technical Field

[0001] One or more embodiments of the present specification relate to the technical field of computer embroidery machines, and in particular to a hybrid head structure of a computer embroidery machine. Background Art

[0002] Computerized embroidery machines are computer-controlled automated equipment used for embroidery on fabrics or other materials. They can automatically complete complex embroidery work according to pre-designed patterns and instructions. Compared with traditional hand embroidery, computerized embroidery machines can greatly improve production efficiency and ensure the consistency of patterns and quality stability of each product. With the continuous enrichment of embroidery machine embroidery products, consumers have higher and higher requirements for the variety of embroidery products. The market requires the combination of embroidery machine's flat embroidery, ribbon embroidery, rope embroidery and other embroidery processes. Therefore, existing computerized embroidery machines usually have both flat embroidery heads and coiling embroidery heads (coiling embroidery is an embroidery process that combines rope embroidery and ribbon embroidery).

[0003] However, the existing computer embroidery machine only drives the flat embroidery head and the tape embroidery head through one embroidery needle drive shaft. When the tape embroidery head is working, the embroidery needle drive shaft will not only drive the embroidery needle of the tape embroidery head to move, but also drive some parts of the flat embroidery head to move, causing some parts of the flat embroidery head to wear. Similarly, when the flat embroidery head is working, the embroidery needle drive shaft will not only drive the embroidery needle of the flat embroidery head to move, but also drive some parts of the tape embroidery head to move, causing some parts of the tape embroidery head to wear.

[0004] In summary, the existing computer embroidery machine hybrid head structure and its embroidery needle drive shaft structure will cause serious wear of the head parts, thereby shortening the life of the computer embroidery machine head. Summary of the invention

[0005] In order to solve the above problems, one or more embodiments of this specification describe a hybrid head structure of a computer embroidery machine.

[0006] A mixed head structure of a computer embroidery machine, comprising: At least one tape embroidery machine head; At least one flat embroidery machine head; The rotary hook assembly is arranged in cooperation with the lower part of the tape embroidery machine head or the flat embroidery machine head; The first embroidery needle driving shaft is connected with all the tape embroidery machine heads; The second embroidery needle driving shaft is connected with all flat embroidery machine heads; The rotary hook drive shaft is connected with all rotary hook components; A power device 1, connected to the first embroidery needle driving shaft, and used for driving the first embroidery needle driving shaft to rotate; A second power device is connected to the second embroidery needle driving shaft and is used to drive the second embroidery needle driving shaft to rotate; The power device three is connected with the rotary hook driving shaft and is used for driving the rotary hook driving shaft to rotate.

[0007] Preferably, the power device 1 comprises: A bearing 1, whose movable portion is connected to the first embroidery needle driving shaft; A pulley A, whose inner ring is connected to the first embroidery needle driving shaft; Driving motor 1; A pulley 1 B, whose inner ring is connected to the output shaft of the driving motor 1; The driving belt 1 connects the outer ring portion of the pulley 1A and the outer ring portion of the pulley 1B.

[0008] Preferably, the power device 1 further comprises: A bearing mounting frame 1, connecting the frame of the embroidery machine and the fixing part of the bearing 1; A motor mounting frame 1, connecting an embroidery machine frame and a driving motor 1; The embroidery machine frame is also provided with a cavity for allowing a driving belt to pass through.

[0009] Preferably, the power device 2 comprises: A second bearing, a movable portion of which is connected to the second embroidery needle driving shaft; The pulley 2A, whose inner ring is connected to the second embroidery needle driving shaft; Driving motor 2; The second pulley B has an inner ring connected to the output shaft of the second driving motor; The driving belt 2 connects the outer ring portion of the pulley 2A and the outer ring portion of the pulley 2B.

[0010] Preferably, the power device 2 further comprises: The second bearing mounting frame is used to connect the frame of the embroidery machine and the fixing part of the second bearing; The second motor mounting frame is used to connect the embroidery machine frame and the second driving motor; The embroidery machine frame is also provided with a cavity 2 for allowing a driving belt 2 to pass through.

[0011] Preferably, the flat embroidery machine head is provided with an escape space allowing the first embroidery needle drive shaft to pass through along the length direction of the drive shaft, and the escape space is surrounded by a support cover; The shell of the coiling embroidery machine head is provided with a through hole for allowing the second embroidery needle driving shaft to pass through.

[0012] Preferably, the power device three comprises: A first pulley, the inner ring of which is connected to the rotary hook drive shaft; Pulley drive motor; A second pulley, the inner ring of which is connected to the output shaft of the pulley drive motor; A power belt connecting an outer ring portion of the first pulley and an outer ring portion of the second pulley; A first bearing, a movable portion of which is connected to the rotary hook drive shaft, and a fixed portion of which is connected to the first housing wall of the rotary hook assembly; The second bearing has a movable portion connected to the rotary hook drive shaft, and a fixed portion connected to the bearing support frame.

[0013] Preferably, the power device three further comprises: The pulley mounting frame is provided with a first vertical support plate and a second vertical support plate which are arranged opposite to each other; The pulley is mounted with a bearing 1, the fixing portion of which is connected to the first vertical support plate; The pulley is provided with a second bearing, and its fixing portion is connected to the second vertical support plate; A rotating shaft, whose axial first end is connected to the movable part of the pulley mounting bearing 1, whose axial second end is connected to the movable part of the pulley mounting bearing 2, whose middle part is connected to the inner ring part of the second pulley, and whose axial first end or axial second end is connected to the output shaft of the pulley driving motor.

[0014] Preferably, a through hole (510) for allowing the rotary shuttle drive shaft to pass through is opened on the second shell wall of the rotary shuttle assembly, and the second shell wall is arranged opposite to the first shell wall.

[0015] Preferably, the mixing head structure further comprises: A first encoder is connected to the first embroidery needle driving shaft, and the first encoder is used to obtain a first rotation angle value corresponding to the rotation position of the first embroidery needle driving shaft; A second encoder is connected to the second embroidery needle driving shaft, and the second encoder is used to obtain a second rotation angle value corresponding to the rotation position of the second embroidery needle driving shaft; A rotary hook encoder is connected to the rotary hook drive shaft, and the rotary hook encoder is used to obtain a rotation angle value corresponding to the rotation position of the rotary hook drive shaft; The controller is electrically connected to the first encoder, the second encoder, the rotary shuttle encoder, the first drive motor, the second drive motor and the pulley drive motor.

[0016] Beneficial Effects The hybrid head structure of the computer embroidery machine provided in the embodiment of the present specification can prevent wear on the parts of the flat embroidery head when the tape embroidery head is working, and can prevent wear on the parts of the tape embroidery head when the flat embroidery head is working, thereby effectively reducing the degree of wear on the head parts under the same working time, and ultimately effectively extending the service life of the computer embroidery machine head.

[0017] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a hybrid head structure of a computer embroidery machine in one embodiment of the present specification from a first perspective; Figure 2 It is a structural schematic diagram of a hybrid head structure of a computer embroidery machine in an embodiment of the present specification from a second viewing angle; Figure 3 It is a partial structural schematic diagram of a power device 1 in one embodiment of this specification; Figure 4 is another partial structural schematic diagram of a power device 1 in one embodiment of this specification; Figure 5 It is a partial structural diagram of a power device 2 in one embodiment of this specification; Figure 6 It is another structural schematic diagram of a power device 2 in one embodiment of the present specification; Figure 7 is a schematic diagram of the structure of the avoidance space in one embodiment of the present specification; Figure 8 It is a partial structural schematic diagram of a rotary hook assembly in one embodiment of the present specification; Fig. 9 It is a partial structural schematic diagram of a power device in one embodiment of this specification; Fig.10 It is a schematic diagram of another part of the structure of the power device in one embodiment of this specification. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0021] In the following introduction, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The following introduction provides multiple embodiments of the present application, and different embodiments can be replaced or combined, so the present application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then the present application should also be considered to include embodiments containing one or more of all other possible combinations of A, B, C, and D, although the embodiment may not be clearly recorded in the following text.

[0022] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements described without departing from the scope of the present application. Various processes or components may be appropriately omitted, substituted or added to each example. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, features described in some examples may be combined in other examples.

[0023] Embodiment 1: A computer embroidery machine hybrid head structure, such as Figure 1 and Figure 2 As shown, the hybrid head structure includes: at least one tape embroidery head 100, at least one flat embroidery head 200, a rotary shuttle assembly 500, a first embroidery needle drive shaft 300, a second embroidery needle drive shaft 400, a rotary shuttle drive shaft, power device one, power device two and power device three.

[0024] The rotary hook assembly 500 is arranged in cooperation with the lower side of the tape embroidery machine head 100 or the flat embroidery machine head 200 .

[0025] The first embroidery needle driving shaft 300 is connected to all the tape embroidery machine heads 100 .

[0026] The second embroidery needle driving shaft 400 is connected to all the flat embroidery machine heads 200 .

[0027] The rotary hook drive shaft is connected to all rotary hook components 500.

[0028] The power device 1 is connected to the first embroidery needle driving shaft 300 and is used to drive the first embroidery needle driving shaft 300 to rotate.

[0029] The second power device is connected to the second embroidery needle driving shaft 400 and is used to drive the second embroidery needle driving shaft 400 to rotate.

[0030] The power device three is connected with the rotary hook driving shaft and is used for driving the rotary hook driving shaft to rotate.

[0031] This embodiment is provided with two embroidery needle drive shafts, a first embroidery needle drive shaft 300 and a second embroidery needle drive shaft 400. When the tape embroidery machine head 100 is working, the embroidery needle of the tape embroidery machine head 100 is driven only by the first embroidery needle drive shaft 300, at this time, the flat embroidery machine head 200 does not need to perform any action, that is, the operation of the tape embroidery machine head 100 will not cause any wear of any parts of the flat embroidery machine head 200. Similarly, when the flat embroidery machine head 200 is working, the embroidery needle of the flat embroidery machine head 200 is driven only by the second embroidery needle drive shaft 400, at this time, the tape embroidery machine head 100 does not need to perform any action, that is, the operation of the flat embroidery machine head 200 will not cause any wear of any parts of the tape embroidery machine head 100.

[0032] Since the tape embroidery machine head 100 in this embodiment is driven by the first embroidery needle drive shaft 300, and the flat embroidery machine head 200 is driven by the second embroidery needle drive shaft 400, the tape embroidery machine head 100 will not cause wear to the parts of the flat embroidery machine head 200 when working, and the flat embroidery machine head 200 will not cause wear to the parts of the tape embroidery machine head 100 when working. Therefore, under the same working time, the wear degree of the machine head parts can be effectively reduced, and the service life of the computer embroidery machine head can be effectively extended.

[0033] However, the rotary shuttle drive shaft and the embroidery needle drive shaft in the prior art are connected by a synchronous belt. The working principle is: the driving motor drives the embroidery needle drive shaft to rotate so that the machine head can work, and the embroidery needle drive shaft drives the rotary shuttle drive shaft to rotate synchronously through the synchronous belt so that the rotary shuttle assembly works synchronously.

[0034] If two embroidery needle drive shafts are provided, it is equivalent to that the first embroidery needle drive shaft 300 is connected to the rotary shuttle drive shaft through the first synchronous belt, and the second embroidery needle drive shaft 400 is connected to the rotary shuttle drive shaft through the second synchronous belt. In this case, when the first embroidery needle drive shaft 300 rotates, it will drive the rotary shuttle drive shaft to rotate synchronously through the first synchronous belt, and the rotary shuttle drive shaft will drive the second embroidery needle drive shaft 400 to rotate synchronously through the second synchronous belt. The rotation of the second embroidery needle drive shaft 400 will still cause the parts of the flat embroidery machine head 200 to rotate and wear. Therefore, in the hybrid head structure of the computer embroidery machine, simply by providing two embroidery needle drive shafts, the wear of the machine head parts cannot be reduced.

[0035] For this purpose, the present embodiment further provides a power device 3, and the rotary shuttle drive shaft is driven by the power device 3 instead of rotating synchronously with the embroidery needle drive shaft through a synchronous belt. When the power device 3 drives the rotary shuttle drive shaft to rotate, the rotary shuttle drive shaft will not reversely drive the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400 to rotate. Therefore, the hybrid head structure of the computer embroidery machine can avoid wearing the parts of the flat embroidery head when the tape embroidery head is working, and avoid wearing the parts of the tape embroidery head when the flat embroidery head is working, thereby effectively reducing the degree of wear of the head parts under the same working time, and finally effectively extending the service life of the computer embroidery machine head.

[0036] In addition, in the hybrid head structure of the computerized embroidery machine of this embodiment, the rotary shuttle drive shaft is driven by the power device 3 instead of rotating synchronously with the embroidery needle drive shaft, so the rotary shuttle drive shaft can be selectively operated or not operated according to different embroidery schemes. When the rotary shuttle drive shaft needs to rotate, the rotary shuttle drive shaft is driven to rotate by the power device 3; when the rotary shuttle drive shaft does not need to rotate, the rotary shuttle drive shaft is stopped by the power device 3. This setting enables the rotary shuttle assembly 500 to stop rotating when it does not need to work, avoiding unnecessary wear on the rotary shuttle assembly 500, thereby increasing the service life of the rotary shuttle assembly 500.

[0037] Further, such as Figure 3 and Figure 4 As shown, the power device 1 of this embodiment includes: a bearing 1 310, a pulley 1 A 320, a driving motor 1, a pulley 1 B 330 and a driving belt 1.

[0038] The movable part of the bearing 1 310 is connected to the first embroidery needle drive shaft 300. The fixed part of the bearing 1 310 is connected to the embroidery machine frame 900 through the bearing mounting frame 1 340. According to actual use requirements, multiple bearings 1 310 can be set on the first embroidery needle drive shaft 300. The bearing 1 310 supports the first embroidery needle drive shaft 300 and allows the first embroidery needle drive shaft 300 to rotate.

[0039] The inner ring portion of the pulley A320 is connected to the first embroidery needle drive shaft 300. According to actual use requirements, one or two or more pulleys A320 can be set on the first embroidery needle drive shaft 300.

[0040] The inner ring of the pulley 1 B330 is connected to the output shaft of the driving motor 1. There are several pulleys 1 A320, and there are correspondingly several pulleys 1 B330. There are several pulleys 1 B330, and there are correspondingly several driving motors 1. The driving motor 1 is connected to the embroidery machine frame 900 through the motor mounting frame 1 350. The driving motor 1 is electrically connected to the controller, and the operating state of the driving motor 1 can be controlled by the controller (for example, controlling the driving motor 1 to start, or controlling the driving motor 1 to stop, or adjusting the speed of the driving motor 1, etc.).

[0041] The driving belt 1 connects the outer ring of the pulley 1A320 and the outer ring of the pulley 1B330. The embroidery machine frame 900 is also provided with a cavity 1910 for allowing the driving belt 1 to pass through. The driving belt 1, the pulley 1A320, the pulley 1B330 and the driving motor 1 cooperate to provide power for the rotation of the first embroidery needle driving shaft 300.

[0042] Working principle: the driving motor drives the pulley B330 to rotate, the pulley B330 drives the driving belt to rotate, the driving belt drives the pulley A320 to rotate, and the pulley A320 drives the first embroidery needle driving shaft 300 to rotate. When there are multiple driving motors, it is only necessary to make the operating frequencies of the multiple driving motors the same.

[0043] The power device 1 of this embodiment can provide sufficient driving force to the first embroidery needle driving shaft 300, thereby allowing the first embroidery needle driving shaft 300 to rotate stably and smoothly.

[0044] Further, such as Figure 5 and Figure 6 As shown, the power device 2 of this embodiment includes: a bearing 2 410, a pulley 2 A420, a drive motor 2, a pulley 2 B430 and a drive belt 2.

[0045] The movable part of the second bearing 410 is connected to the second embroidery needle drive shaft 400. The fixed part of the second bearing 410 is connected to the embroidery machine frame 900 through the second bearing mounting frame 440. According to actual use requirements, multiple second bearings 410 can be arranged on the second embroidery needle drive shaft 400. The second bearing 410 supports the second embroidery needle drive shaft 400 and allows the second embroidery needle drive shaft 400 to rotate.

[0046] The inner ring portion of the belt wheel 2 A420 is connected to the second embroidery needle driving shaft 400. According to actual use requirements, one or two or more belt wheels 2 A420 can be set on the second embroidery needle driving shaft 400.

[0047] The inner ring of the pulley 2 B430 is connected to the output shaft of the drive motor 2. There are several pulleys 2 A420, and there are corresponding pulleys 2 B430. There are several pulleys 2 B430, and there are corresponding drive motors 2. The drive motor 2 is connected to the embroidery machine frame 900 through the motor mounting frame 2 450. The drive motor 2 is electrically connected to the controller, and the operating state of the drive motor 2 can be controlled by the controller (for example, controlling the start of the drive motor 2, or controlling the stop of the drive motor 2, or adjusting the speed of the drive motor 2, etc.).

[0048] The second driving belt connects the outer ring of the second pulley A420 and the outer ring of the second pulley B430. The embroidery machine frame 900 is also provided with a second cavity 920 for allowing the second driving belt to pass through. The second driving belt, the second pulley A420, the second pulley B430 and the second driving motor cooperate to provide power for the rotation of the second embroidery needle driving shaft 400.

[0049] Working principle: the second driving motor drives the second pulley B430 to rotate, the second pulley B430 drives the second driving belt to rotate, the second driving belt drives the second pulley A420 to rotate, and the second pulley A420 drives the second embroidery needle driving shaft 400 to rotate. When there are multiple second driving motors, it is only necessary to make the operating frequencies of the multiple second driving motors the same.

[0050] The power device 2 of this embodiment can provide sufficient driving force to the second embroidery needle driving shaft 400, thereby allowing the second embroidery needle driving shaft 400 to rotate stably and smoothly.

[0051] Further, such as Figure 7 As shown, the flat embroidery machine head 200 in this embodiment is provided with an escape space allowing the first embroidery needle drive shaft 300 to pass through along the length direction of the drive shaft, and the escape space is surrounded by a support cover 360. The support cover 360 is connected and fixed to the embroidery machine frame 900 to shield and protect the first embroidery needle drive shaft 300.

[0052] By setting the avoidance space, the first embroidery needle drive shaft 300 does not contact the flat embroidery machine head 200. When the first embroidery needle drive shaft 300 drives the tape embroidery machine head 100 to work, it will not cause any impact on the flat embroidery machine head 200, and will not cause wear to the parts of the flat embroidery machine head 200.

[0053] Furthermore, the housing of the tape embroidery machine head 100 in this embodiment is provided with a through hole for allowing the second embroidery needle drive shaft 400 to pass through. The diameter of the through hole is greater than the diameter of the second embroidery needle drive shaft 400.

[0054] Through the setting of the perforation, the second embroidery needle drive shaft 400 does not contact the tape embroidery machine head 100. When the second embroidery needle drive shaft 400 drives the flat embroidery machine head 200 to work, it will not cause any impact on the tape embroidery machine head 100, and will not cause wear to the parts of the tape embroidery machine head 100.

[0055] Further, such as Fig. 9 As shown, the power device three in this embodiment also includes: a first bearing 640.

[0056] The movable portion of the first bearing 640 is connected to the rotary shuttle drive shaft, and the fixed portion of the first bearing 640 is connected to the first housing wall of the rotary shuttle assembly 500. The first bearing 640 supports the rotary shuttle drive shaft and allows the first bearing 640 to rotate. The first bearing 640 is installed on the rotary shuttle assembly 500, so that the installation position of the rotary shuttle drive shaft relative to the rotary shuttle assembly 500 is more accurate, and the connection stability between the rotary shuttle drive shaft and the rotary shuttle assembly 500 is better.

[0057] In addition, if Figure 8 As shown, the rotary hook assembly 500 is provided with a through hole 510 on the second housing wall for allowing the rotary hook drive shaft to pass through, and the second housing wall is arranged opposite to the first housing wall. The diameter of the through hole 510 is larger than the diameter of the rotary hook drive shaft.

[0058] The through hole 510 allows the rotary shuttle drive shaft to pass through the housing of the rotary shuttle assembly 500, and the relative installation position of the rotary shuttle drive shaft and the rotary shuttle assembly 500 is more suitable without affecting the normal operation of the rotary shuttle assembly 500.

[0059] Further, such as Fig. 9 As shown, the power device three in this embodiment also includes: a second bearing 650.

[0060] The movable part of the second bearing 650 is connected to the rotary hook drive shaft, and the fixed part of the second bearing 650 is connected to the bearing support frame 660. In this embodiment, one, two or more second bearings 650 can be provided according to actual use requirements, and the second bearing 650 can be provided between two adjacent rotary hook assemblies 500. The second bearing 650 is mainly used to support the rotary hook drive shaft, so that the second bearing 650 can rotate more stably and smoothly.

[0061] Further, such as Fig.10 As shown, the power device three of this embodiment also includes: a pulley mounting frame 670, a pulley mounting bearing 1, a pulley mounting bearing 2 and a rotating shaft.

[0062] The belt wheel mounting frame 670 is provided with a first vertical support plate and a second vertical support plate arranged opposite to each other. The belt wheel mounting frame 670 also includes a support top plate connected to the top of the first vertical support plate and the second vertical support plate, and the support top plate is connected and fixed to the embroidery machine frame.

[0063] The fixing portion of the pulley mounting bearing 1 is connected to the first vertical support plate.

[0064] The fixing portion of the pulley mounting bearing 2 is connected to the second vertical support plate.

[0065] The first axial end of the rotating shaft is connected to the movable part of the pulley mounting bearing one, the second axial end of the rotating shaft is connected to the movable part of the pulley mounting bearing two, the middle part of the rotating shaft is connected and fixed to the inner ring part of the second pulley 620, and the first axial end or the second axial end of the rotating shaft is connected to the output shaft of the pulley drive motor.

[0066] The pulley mounting frame 670 is used to support the second pulley 620 to prevent the entire weight of the second pulley 620 from directly acting on the output shaft of the pulley drive motor, thereby making the overall structure of the power device three more stable and reliable.

[0067] Furthermore, the mixing head structure of this embodiment also includes: a first encoder, a second encoder, a rotary shuttle encoder and a controller.

[0068] The first encoder is connected to the first embroidery needle driving shaft 300 , and is used to obtain a first rotation angle value corresponding to the rotation position of the first embroidery needle driving shaft 300 .

[0069] The first encoder itself is a prior art, and the first encoder is connected and fixed to the first embroidery needle drive shaft 300. No matter which position the first embroidery needle drive shaft 300 rotates clockwise or counterclockwise, a corresponding first rotation angle value can be obtained through the first encoder. For example, when the first embroidery needle drive shaft 300 rotates clockwise to position D1 (assuming that a base point is set on the first embroidery needle drive shaft 300, and the base point is located directly above), a corresponding first rotation angle value d1 (assuming that it is 0 degrees) can be obtained through the first encoder; when the first embroidery needle drive shaft 300 rotates clockwise to position D2 (assuming that the base point is located on the right), a corresponding first rotation angle value d2 (assuming that it is 90 degrees) can be obtained through the first encoder; when the first embroidery needle drive shaft 300 rotates clockwise to position D3 (assuming that the base point is located directly below), a corresponding first rotation angle value d3 (assuming that it is 180 degrees) can be obtained through the first encoder.

[0070] And because the installation positions of the first encoder and the first embroidery needle drive shaft 300 are fixed, even if another first encoder is replaced, as long as the first embroidery needle drive shaft 300 rotates clockwise to position D1 (that is, the base point is directly above), the first rotation angle value d1 obtained is still 0 degrees; the first embroidery needle drive shaft 300 rotates clockwise to position D2 (that is, the base point is on the right), the first rotation angle value d2 obtained is still 90 degrees; the first embroidery needle drive shaft 300 rotates clockwise to position D3 (that is, the base point is directly below), the first rotation angle value d3 obtained is still 180 degrees.

[0071] In short, when the first embroidery needle driving shaft 300 rotates to any position, the first rotation angle value corresponding to the position can be obtained through the first encoder, and as long as the first embroidery needle driving shaft 300 rotates to the same position, the first rotation angle value obtained by the first encoder is the same. The first encoder is electrically connected to the controller, and the controller can determine the position to which the first embroidery needle driving shaft 300 rotates through the first rotation angle value obtained by the first encoder.

[0072] The second encoder is connected to the second embroidery needle driving shaft 400 , and the second encoder is used to obtain a second rotation angle value corresponding to the rotation position of the second embroidery needle driving shaft 400 .

[0073] Similarly, the second encoder itself is also a prior art, and the second encoder is connected and fixed to the second embroidery needle drive shaft 400. No matter which position the second embroidery needle drive shaft 400 rotates clockwise or counterclockwise, a corresponding second rotation angle value can be obtained through the second encoder. For example, when the second embroidery needle drive shaft 400 rotates clockwise to position F1 (assuming that a base point is set on the second embroidery needle drive shaft 400, and the base point is located on the left), a corresponding second rotation angle value f1 (assuming it is 0 degrees) can be obtained through the second encoder; when the second embroidery needle drive shaft 400 rotates clockwise to position F2 (assuming that the base point is located directly above), a corresponding second rotation angle value f2 (assuming it is 90 degrees) can be obtained through the second encoder; when the second embroidery needle drive shaft 400 rotates clockwise to position F3 (assuming that the base point is located on the right), a corresponding second rotation angle value f3 (assuming it is 180 degrees) can be obtained through the second encoder.

[0074] And because the installation positions of the second encoder and the second embroidery needle drive shaft 400 are fixed, even if another second encoder is replaced, as long as the second embroidery needle drive shaft 400 rotates clockwise to position F1 (that is, the base point is on the left), the second rotation angle value f1 obtained is still 0 degrees; the second embroidery needle drive shaft 400 rotates clockwise to position F2 (that is, the base point is directly above), the second rotation angle value f2 obtained is still 90 degrees; the second embroidery needle drive shaft 400 rotates clockwise to position F3 (that is, the base point is on the right), the second rotation angle value f3 obtained is still 180 degrees.

[0075] In short, when the second embroidery needle driving shaft 400 rotates to any position, the second rotation angle value corresponding to the position can be obtained by the second encoder, and as long as the second embroidery needle driving shaft 400 rotates to the same position, the second rotation angle value obtained by the second encoder is the same. The second encoder is electrically connected to the controller, and the controller can determine the position to which the second embroidery needle driving shaft 400 rotates through the second rotation angle value obtained by the second encoder.

[0076] The rotary hook encoder is connected to the rotary hook drive shaft, and the rotary hook encoder is used to obtain a rotation angle value corresponding to the rotation position of the rotary hook drive shaft.

[0077] Similarly, the rotary hook encoder itself is also a prior art, and the rotary hook encoder is fixedly connected to the rotary hook drive shaft. No matter which position the rotary hook drive shaft rotates clockwise or counterclockwise, a corresponding rotation angle value can be obtained through the rotary hook encoder. For example, when the rotary hook drive shaft rotates clockwise to position S1 (assuming that a base point is set on the rotary hook drive shaft and the base point is directly above), a corresponding rotation angle value s1 (assuming it is 10 degrees) can be obtained through the rotary hook encoder; when the rotary hook drive shaft rotates clockwise to position S2 (assuming that the base point is on the right), a corresponding rotation angle value s2 (assuming it is 100 degrees) can be obtained through the rotary hook encoder; when the rotary hook drive shaft rotates clockwise to position S3 (assuming that the base point is directly below), a corresponding rotation angle value s3 (assuming it is 190 degrees) can be obtained through the rotary hook encoder.

[0078] And because the installation positions of the rotary hook encoder and the rotary hook drive shaft are fixed, even if you replace another rotary hook encoder, as long as the rotary hook drive shaft rotates clockwise to position S1 (that is, the base point is directly above), the obtained rotation angle value s1 is still 10 degrees; the rotary hook drive shaft rotates clockwise to position S2 (that is, the base point is on the right), the obtained rotation angle value s2 is still 100 degrees; the rotary hook drive shaft rotates clockwise to position S3 (that is, the base point is directly below), the obtained rotation angle value s3 is still 190 degrees.

[0079] In short, when the rotary hook drive shaft rotates to any position, the rotary hook encoder can obtain the rotation angle value corresponding to the position, and as long as the rotary hook drive shaft rotates to the same position, the rotation angle value obtained by the rotary hook encoder is the same. The pulley drive motor is electrically connected to the controller, and the controller can control the operating state of the pulley drive motor (for example, control the pulley drive motor to start, or control the pulley drive motor to stop, or adjust the speed of the pulley drive motor, etc.).

[0080] The controller is electrically connected to the first encoder, the second encoder, the rotary shuttle encoder, the first drive motor, the second drive motor and the pulley drive motor.

[0081] In this embodiment, the first embroidery needle drive shaft 300 is connected to the needle bar drive assembly of the tape embroidery machine head 100; the second embroidery needle drive shaft 400 is connected to the needle bar drive assembly of the flat embroidery machine head 200. The needle bar drive assembly of this embodiment can directly adopt the existing technology. The rotation of the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400 can drive the needle bar drive assembly to move, and the movement of the needle bar drive assembly can drive the needle bar of the tape embroidery machine head 100 or the flat embroidery machine head 200 to move up and down. Every time the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400 rotates one circle, the needle bar moves up and down once.

[0082] like Figure 8 As shown, the rotary shuttle assembly 500 in this embodiment includes: a first driving wheel 520, a second driving wheel 530 and a rotary shuttle body 540. The first driving wheel 520 is connected to the rotary shuttle drive shaft, and the central axis direction of the first driving wheel 520 is the same as the length direction of the rotary shuttle drive shaft. The central axis direction of the second driving wheel 530 is perpendicular to the central axis direction of the first driving wheel 520, and the second driving wheel 530 is meshed and connected with the first driving wheel 520. The rotary shuttle body 540 is connected to the second driving wheel 530. When the power device drives the rotary shuttle drive shaft to rotate, the rotary shuttle drive shaft drives the first driving wheel 520 to rotate synchronously, and when the first driving wheel 520 rotates, it drives the second driving wheel 530 to rotate, and when the second driving wheel 530 rotates, it drives the rotary shuttle body 540 to rotate.

[0083] Taking the first embroidery needle drive shaft 300 as an example, assuming that when the first rotation angle value of the first embroidery needle drive shaft 300 is in the range of 231 degrees to 109 degrees, the embroidery needle is located above the workbench, and when the first rotation angle value changes from 231 degrees to 360 degrees (i.e., 0 degrees) and then changes to 109 degrees, the needle bar first drives the embroidery needle to move upward and then drives the embroidery needle to move downward. Assuming that when the first rotation angle value of the first embroidery needle drive shaft 300 is in the range of 110 degrees to 230 degrees, the embroidery needle is located below the workbench, and when the first rotation angle value changes from 110 degrees to 230 degrees, the needle bar first drives the embroidery needle to move downward and then drives the embroidery needle to move upward.

[0084] Similarly, when the second rotation angle value of the second embroidery needle driving shaft 400 is in the range of 231 degrees to 109 degrees, the embroidery needle is located above the workbench, and when the second rotation angle value changes from 231 degrees to 360 degrees (i.e., 0 degrees) and then to 109 degrees, the needle bar first drives the embroidery needle to move upward and then drives the embroidery needle to move downward. Assume that when the second rotation angle value of the second embroidery needle driving shaft 400 is in the range of 110 degrees to 230 degrees, the embroidery needle is located below the workbench, and when the second rotation angle value changes from 110 degrees to 230 degrees, the needle bar first drives the embroidery needle to move downward and then drives the embroidery needle to move upward.

[0085] Assuming that when the rotation angle value of the embroidery needle drive shaft is 200 degrees and the rotation angle value of the rotary shuttle drive shaft is also 200 degrees (the rotation angle value of the rotary shuttle drive shaft can be 190 degrees or other angle values), the embroidery needle and the rotary shuttle body 540 complete the needle insertion and thread picking, then it is equivalent to the needle insertion angle of the embroidery needle drive shaft being 200 degrees, and the thread picking angle of the rotary shuttle drive shaft being 200 degrees (if the rotation angle value of the rotary shuttle drive shaft is 190 degrees, then the thread picking angle of the rotary shuttle drive shaft is 190 degrees). In this case, the needle insertion angle of the embroidery needle drive shaft is always 200 degrees, because in the prior art, the rotary shuttle drive shaft rotates synchronously with the embroidery needle drive shaft through a synchronous belt (the rotary shuttle drive shaft needs to rotate as many degrees as the embroidery needle drive shaft rotates), so when the thread picking angle of the rotary shuttle drive shaft is 200 degrees at the beginning, it will always be 200 degrees afterwards; if it is 190 degrees at the beginning, it will always be 190 degrees afterwards. That is to say, in the existing computer embroidery machine hybrid head structure, once the thread taking angle of the rotary shuttle driving shaft is determined, it cannot be adjusted or changed later.

[0086] If the thread taking angle of the rotary hook drive shaft cannot be adjusted, then if the size of the wire changes later, for example, the size of the wire becomes larger, the wire may break easily.

[0087] The present embodiment drives the rotary shuttle drive shaft by the power device 3, rather than rotating synchronously with the embroidery needle drive shaft through the synchronous belt. Therefore, when the wire size changes, the thread taking angle of the rotary shuttle drive shaft can be adjusted.

[0088] For example, when the thread size is within the first size range, the needle insertion angle of the embroidery needle drive shaft (the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400) is 200 degrees, the thread taking angle of the rotary shuttle drive shaft is 200 degrees, and the rotary shuttle drive shaft rotates synchronously with the embroidery needle drive shaft (i.e., if the embroidery needle drive shaft rotates 1 degree to 201 degrees, then the rotary shuttle drive shaft also rotates 1 degree to 201 degrees). Every time the embroidery needle drive shaft rotates to a rotation angle value of 200 degrees, the rotary shuttle drive shaft also rotates synchronously to a rotation angle value of 200 degrees, and at this time, the embroidery needle and the rotary shuttle body 540 complete needle insertion and thread taking.

[0089] Later, when the thread size increases and enters the second size range, the needle insertion angle of the embroidery needle drive shaft is still 200 degrees, and the thread taking angle of the rotary shuttle drive shaft can be adjusted to 195 degrees. The rotary shuttle drive shaft and the embroidery needle drive shaft rotate synchronously (i.e., if the embroidery needle drive shaft rotates 1 degree to 201 degrees, then the rotary shuttle drive shaft also rotates 1 degree to 196 degrees). Every time the embroidery needle drive shaft rotates to a rotation angle value of 200 degrees, the rotary shuttle drive shaft also rotates synchronously to a rotation angle value of 195 degrees. At this time, the embroidery needle and the rotary shuttle body 540 complete the needle insertion and thread taking.

[0090] In summary, the hybrid head structure of the computer embroidery machine in this embodiment, through the arrangement of the power device three, the first encoder, the second encoder, the shuttle encoder, the controller and other components, enables the thread taking angle of the shuttle drive shaft to be adaptively adjusted according to the size of the wire, thereby avoiding thread breakage due to changes in the wire size.

[0091] Embodiment 2: A method for controlling the thread taking of a rotary hook of a computerized embroidery machine, the method comprising: Step L1. Determine the needle lowering angle value of the embroidery needle drive shaft and determine the thread taking angle value of the rotary shuttle drive shaft, so that when the embroidery needle drive shaft rotates to the needle lowering angle value and the rotary shuttle drive shaft rotates to the thread taking angle value, the embroidery needle and the rotary shuttle are docked.

[0092] Step L2. Calculate the basic angle difference based on the needle insertion angle value and the thread removal angle value.

[0093] Step L3: The embroidery needle drive shaft is driven to rotate by the first power device and the rotary shuttle drive shaft is driven to rotate by the second power device so that the embroidery needle drive shaft and the rotary shuttle drive shaft rotate synchronously based on the basic angle difference.

[0094] Step L1 and step L2 are performed before the computer embroidery machine starts working. Step L1 specifically includes: L11. An embroidery needle encoder is set on the embroidery needle drive shaft, and a rotation angle value corresponding to the rotation position of the embroidery needle drive shaft is obtained through the embroidery needle encoder.

[0095] The computerized embroidery machine may be provided with only the tape embroidery head 100, or may be provided with only the flat embroidery head 200, or, as in the first embodiment, may be provided with both the tape embroidery head 100 and the flat embroidery head 200.

[0096] In this embodiment, it is assumed that both the tape embroidery head 100 and the flat embroidery head 200 are provided on the computer embroidery machine, and the embroidery needle encoder in this step includes a first encoder provided on the first embroidery needle drive shaft 300 and a second encoder provided on the second embroidery needle drive shaft 400. The first power device of this embodiment is the power device 1 and the power device 2 in the embodiment 1, and the second power device of this embodiment is the power device 3 in the embodiment 1.

[0097] For the convenience of description, in this embodiment, the first embroidery needle drive shaft 300 and the second embroidery needle drive shaft 400 are collectively referred to as embroidery needle drive shafts, the first encoder and the second encoder are collectively referred to as embroidery needle encoders, the power device 1 and the power device 2 are collectively referred to as the first power device, and the power device 3 is collectively referred to as the second power device.

[0098] In short, every time the embroidery needle driving shaft rotates to a position, the controller can obtain a corresponding rotation angle value through the embroidery needle encoder.

[0099] L12. Obtain the rotation angle value when the embroidery needle drive shaft rotates to the point where the embroidery needle and the rotary shuttle are docked, and use the rotation angle value as the needle insertion angle value.

[0100] You can conduct a test first, first drive the embroidery needle drive shaft to rotate until the embroidery needle and the rotary shuttle dock, then stop and check the rotation angle value obtained by the controller through the embroidery needle encoder at this time. Assuming the rotation angle value is 200 degrees, it can be determined that the needle angle value is 200 degrees. Generally speaking, since the installation position of the embroidery needle drive shaft relative to the machine head is fixed, and the installation position of the embroidery needle encoder relative to the embroidery needle drive shaft is fixed, the needle angle value of the same model of computer embroidery machine is fixed and is always 200 degrees.

[0101] L13. A rotary hook encoder is set on the rotary hook drive shaft, and a rotation angle value corresponding to the rotation position of the rotary hook drive shaft is obtained through the rotary hook encoder.

[0102] Every time the rotary hook drive shaft rotates to a certain position, the controller can obtain a corresponding rotation angle value through the rotary hook encoder.

[0103] L14. Obtain the rotation angle value when the rotary shuttle driving shaft rotates to the point where the embroidery needle and the rotary shuttle are docked, and use the rotation angle value as the thread taking angle value.

[0104] You can do a test first. Install a certain size of wire on the shuttle, then drive the shuttle drive shaft to rotate until the embroidery needle and the shuttle are docked (the tension of the wire needs to be appropriate during docking, not too tight or too loose), then stop and check the rotation angle value obtained by the controller through the shuttle encoder. Assuming the rotation angle value is 200 degrees, it can be determined that the thread-taking angle value is 200 degrees. If a thicker wire is used, the rotation angle value of the shuttle drive shaft may be 195 degrees, which is more appropriate, so the thread-taking angle value can be determined to be 195 degrees; if a thinner wire is used, the rotation angle value of the shuttle drive shaft may be 205 degrees, which is more appropriate, so the thread-taking angle value can be determined to be 205 degrees.

[0105] In summary, this step can first determine through experiments what thread take-up angle values ​​the rotary shuttle drive shaft needs for threads of different sizes / materials / types, and then store these thread take-up angle values. Usually, the thread take-up angle value of the rotary shuttle drive shaft is adjusted and determined based on 200 degrees according to the size of the thread. When the computer embroidery machine is used, the size / material / type of the thread can be selected on the operation interface, and then the computer embroidery machine will automatically determine the thread take-up angle value of the rotary shuttle drive shaft.

[0106] Assuming that the needle insertion angle value determined in step L12 is 200 degrees, and the thread taking angle value determined in step L14 is 195 degrees, then, when the computer embroidery machine is officially working, when the embroidery needle drive shaft rotates to a rotation angle value of 200 degrees, the rotary shuttle drive shaft needs to be rotated to a rotation angle value of 195 degrees at the same time, at which time the embroidery needle and the rotary shuttle are docked, thereby completing the needle insertion and thread taking operation.

[0107] Furthermore, after the needle insertion angle value and the thread taking angle value in step L1 are determined, the basic angle difference can be directly calculated in step L2. For example, when the needle insertion angle value is 200 degrees and the thread taking angle value is 195 degrees, the basic angle difference is 5; when the needle insertion angle value is 200 degrees and the thread taking angle value is 200 degrees, the basic angle difference is 0; when the needle insertion angle value is 200 degrees and the thread taking angle value is 205 degrees, the basic angle difference is -5.

[0108] Furthermore, step L3 is performed when the computer embroidery machine is working. Step L3 specifically includes: L311. Get the real-time speed of the embroidery needle drive shaft. Assume that the real-time speed of the embroidery needle drive shaft is V1.

[0109] L312. Determine the real-time value of the deviation angle. Determining the real-time value of the deviation angle specifically includes: S1. Obtain the real-time rotation angle value of the embroidery needle drive shaft and the current rotation angle value of the rotary hook drive shaft.

[0110] S2. Calculate the actual angle difference based on the real-time rotation angle value and the current rotation angle value.

[0111] Assuming that the real-time rotation angle value of the embroidery needle drive shaft is 80 degrees and the current rotation angle value of the rotary shuttle drive shaft is 79.9 degrees, the actual angle difference is 0.1.

[0112] S3. Calculate the real-time value of the deviation angle based on the actual angle difference and the basic angle difference.

[0113] Assuming that the actual angle difference is 0.1 and the base angle difference is 0, the real-time value of the deviation angle is 0.1.

[0114] L313. Determine whether the real-time value of the deviation angle is within the allowable angle deviation threshold range; when the real-time value of the deviation angle is within the allowable angle deviation threshold range, the current rotational speed of the rotary shuttle drive shaft is controlled by the second power device to be the same as the real-time rotational speed of the embroidery needle drive shaft; when the real-time value of the deviation angle is not within the allowable angle deviation threshold range, the real-time adjustment speed is determined based on the real-time rotational speed of the embroidery needle drive shaft, and the current rotational speed of the rotary shuttle drive shaft is controlled by the second power device to be the same as the real-time adjustment speed.

[0115] Assuming that the allowable angle deviation threshold range is -0.3 to 0.3, the real-time value of the deviation angle (i.e. 0.1) is within the allowable angle deviation threshold range (i.e. -0.3 to 0.3). At this time, the current rotation speed of the rotary shuttle drive shaft controlled by the second power device is the same as the real-time rotation speed of the embroidery needle drive shaft (i.e. V1).

[0116] Alternatively, step L3 specifically includes: L321. Get the current speed of the rotary hook drive shaft. Assume that the current speed of the rotary hook drive shaft is V2.

[0117] L322. Determine the real-time value of the deviation angle. Determining the real-time value of the deviation angle specifically includes: S1. Obtain the real-time rotation angle value of the embroidery needle drive shaft and the current rotation angle value of the rotary hook drive shaft.

[0118] S2. Calculate the actual angle difference based on the real-time rotation angle value and the current rotation angle value.

[0119] Assuming that the real-time rotation angle value of the embroidery needle drive shaft is 120 degrees and the current rotation angle value of the rotary hook drive shaft is 126 degrees, the actual angle difference is -6.

[0120] S3. Calculate the real-time value of the deviation angle based on the actual angle difference and the basic angle difference.

[0121] Assuming the actual angle difference is -6 and the base angle difference is -5, the real-time value of the deviation angle is -1.

[0122] L323. Determine whether the real-time value of the deviation angle is within the allowable angle deviation threshold range; when the real-time value of the deviation angle is within the allowable angle deviation threshold range, the real-time rotation speed of the embroidery needle drive shaft is controlled by the first power device to be the same as the current rotation speed of the rotary shuttle drive shaft; when the real-time value of the deviation angle is not within the allowable angle deviation threshold range, the current adjustment speed is determined based on the current rotation speed of the rotary shuttle drive shaft, and the real-time rotation speed of the embroidery needle drive shaft is controlled by the first power device to be the same as the current adjustment speed.

[0123] Assuming that the allowable angle deviation threshold range is -0.3 to 0.3, then the real-time value of the deviation angle (i.e. -1) is not within the allowable angle deviation threshold range (i.e. -0.3 to 0.3). At this time, the current adjustment speed V2' is first determined based on the current speed (V2) of the rotary shuttle drive shaft (if the real-time value of the deviation angle is a negative value, the current speed is increased a little to obtain the previous adjustment speed; if the real-time value of the deviation angle is a positive value, the current speed is decreased a little to obtain the current adjustment speed), and then the real-time speed of the embroidery needle drive shaft is controlled by the first power device to be the same as the current adjustment speed (i.e. V2').

[0124] In the prior art, the rotary shuttle drive shaft and the embroidery needle drive shaft are synchronized through a synchronous belt, so there is no problem with the synchronization of the two. However, after the thread-taking angle value of the rotary shuttle drive shaft is determined, it cannot be adaptively adjusted according to the size of the wire. Therefore, once the size / material / type of the wire changes, the thread will break / fall off.

[0125] In this embodiment, the embroidery needle drive shaft is driven to rotate by the first power device, and the rotary shuttle drive shaft is driven to rotate by the second power device. There is no synchronous belt between the embroidery needle drive shaft and the rotary shuttle drive shaft, and the two do not interfere with each other. Therefore, when the size / material / type of the wire material changes, the thread taking angle value of the rotary shuttle drive shaft can be changed, thereby effectively reducing the phenomenon of thread breakage / thread derailment. However, because the rotary shuttle drive shaft is additionally controlled to rotate by the second power device, the rotation synchronization of the rotary shuttle drive shaft and the embroidery needle drive shaft must be ensured. If the rotation synchronization of the rotary shuttle drive shaft and the embroidery needle drive shaft cannot be guaranteed, the computer embroidery machine will not work properly.

[0126] This embodiment can effectively ensure the rotation synchronization of the rotary shuttle drive shaft and the embroidery needle drive shaft through steps L311 to L313 or steps L321 to L323. The difference between steps L311 to L313 and steps L321 to L323 is that steps L311 to L313 are based on the embroidery needle drive shaft, and then adjust the rotation speed of the rotary shuttle drive shaft so that the actual angle difference (calculated by the rotation angle value of the embroidery needle drive shaft and the rotation angle value of the rotary shuttle drive shaft) and the basic angle difference The real-time value of the deviation angle is always within the allowable angle deviation threshold range, thereby ensuring the rotation synchronization of the rotary shuttle drive shaft and the embroidery needle drive shaft.

[0127] Steps L321 to L323 are based on the rotary shuttle drive shaft, and then the rotation speed of the embroidery needle drive shaft is adjusted so that the actual angle difference (calculated by the rotation angle value of the embroidery needle drive shaft and the rotation angle value of the rotary shuttle drive shaft) and the real-time value of the deviation angle of the basic angle difference are always within the allowable angle deviation threshold range, thereby ensuring the rotation synchronization of the rotary shuttle drive shaft and the embroidery needle drive shaft.

[0128] In summary, the computer embroidery machine rotary shuttle thread taking control method of this embodiment can, under the premise of ensuring the rotation synchronization of the rotary shuttle drive shaft and the embroidery needle drive shaft, make the thread taking angle value of the rotary shuttle drive shaft adaptively adjusted according to the size / material / type of the wire material, thereby effectively reducing the phenomenon of thread breakage / thread derailment when the computer embroidery machine is working.

[0129] Furthermore, in this embodiment, before step L3, the machine head can also be zeroed, so that the embroidery needle drive shaft and the rotary shuttle drive shaft are both at "zero position" before starting work, thereby achieving better synchronization between the embroidery needle drive shaft and the rotary shuttle drive shaft.

[0130] Embodiment 3: A method for controlling the homing of a computerized embroidery machine head, the method comprising: Step P1. Determine the current change machine head.

[0131] The computer embroidery machine can be provided with only the tape embroidery head 100 or only the flat embroidery head 200. If only the tape embroidery head 100 is provided, then the current heads to be changed are all the tape embroidery heads 100; if only the flat embroidery head 200 is provided, then the current heads to be changed are all the flat embroidery heads 200.

[0132] Or, similar to the first embodiment, both the tape embroidery head 100 and the flat embroidery head 200 are provided. This embodiment assumes that both the tape embroidery head 100 and the flat embroidery head 200 are provided on the computer embroidery machine.

[0133] This step has two situations. Situation 1 is to use a certain machine head to work at the beginning. For example, the tape embroidery machine head 100 is selected to work at the beginning. At this time, the controller can obtain the instruction to start using the tape embroidery machine head 100. Through this instruction, it can be determined that the current machine head to be changed is all the tape embroidery machine heads 100.

[0134] Case 2 is that when a certain machine head (such as the flat embroidery machine head 200) is working, the power is suddenly cut off. After the power is restored, the controller can obtain the power-on signal. After obtaining the power-on signal, the controller can determine the machine head that was previously in working state according to the working record (such as the use record of power device 1 and power device 2, or the use record of the first embroidery needle drive shaft 300 and the second embroidery needle drive shaft 400) and use the corresponding machine head as the current machine head to be changed. In this embodiment, since the flat embroidery machine head 200 was previously in working state, the power device 2 and the second embroidery needle drive shaft 400 have a use record. And because the power device 2 and the second embroidery needle drive shaft 400 have a use record, it can be determined that the flat embroidery machine head 200 was previously working, and then all flat embroidery machine heads 200 can be determined as the current machine heads to be changed.

[0135] In summary, this step can determine whether the current heads to be given change are all the tape embroidery heads 100 or all the flat embroidery heads 200.

[0136] Step P2: Determine whether the change machine head is in the zero position. Step P2 specifically includes: P21. Determine whether the embroidery needle drive shaft is at zero position and determine whether the rotary shuttle drive shaft is at zero position. P21 specifically includes: P212. An embroidery needle encoder is set on the embroidery needle drive shaft, and the rotation angle value corresponding to the rotation position of the embroidery needle drive shaft is obtained through the embroidery needle encoder. Every time the embroidery needle drive shaft rotates to a position, the controller can obtain a corresponding rotation angle value through the embroidery needle encoder.

[0137] If the embroidery machine in this embodiment includes both the tape embroidery head 100 and the flat embroidery head 200, then the embroidery needle encoder in this embodiment includes a first encoder provided on the first embroidery needle drive shaft 300 and a second encoder provided on the second embroidery needle drive shaft 400. In other words, each time the first embroidery needle drive shaft 300 rotates to a position, the controller can obtain a corresponding first rotation angle value through the first encoder. Each time the second embroidery needle drive shaft 400 rotates to a position, the controller can obtain a corresponding second rotation angle value through the second encoder.

[0138] P212. When the rotation angle value is the same as the zero position angle value, it is determined that the embroidery needle drive shaft is at the zero position.

[0139] In this embodiment, it is assumed that the zero position angle value of the embroidery needle drive shaft is 100 degrees. If the obtained rotation angle value is 100 degrees, it means that the embroidery needle drive shaft is at the zero position; otherwise, it means that the embroidery needle drive shaft is at a non-zero position.

[0140] P213. Set a rotary hook encoder on the rotary hook drive shaft, and obtain the rotation angle value corresponding to the rotation position of the rotary hook drive shaft through the rotary hook encoder. Every time the rotary hook drive shaft rotates to a position, the controller can obtain a corresponding rotation angle value through the rotary hook encoder.

[0141] P214. When the rotation angle value is the same as the zero position angle value, it is determined that the rotary hook drive shaft is at the zero position.

[0142] In this embodiment, it is assumed that the zero position angle value of the rotary hook drive shaft is also 100 degrees. If the acquired rotation angle value is 100 degrees, it means that the rotary hook drive shaft is at the zero position; otherwise, it means that the rotary hook drive shaft is at a non-zero position.

[0143] Through step P21, it can be determined whether the embroidery needle drive shaft is at the zero position and whether the rotary hook drive shaft is at the zero position.

[0144] P22. When the embroidery needle drive shaft is at zero position and the rotary shuttle drive shaft is at zero position, it is determined that the head to be calibrated is in the zero position state; otherwise, it is determined that the head to be calibrated is in the non-zero position state.

[0145] In this embodiment, the head to be changed (taping embroidery head 100 or flat embroidery head 200) is determined to be in the zero position state only when the embroidery needle drive shaft (the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400) and the rotary shuttle drive shaft are both in the zero position; otherwise, the head to be changed (taping embroidery head 100 or flat embroidery head 200) is determined to be in the non-zero position state.

[0146] Step P3. When the change head to be given is in the zero position state, determine that the change head to be given is finished; when the change head to be given is in the non-zero position state, give change to the change head until the change head to be given is in the zero position state.

[0147] When the head to be changed is in the zero position state, it is determined that the head to be changed has finished changing, and the computer embroidery machine performs working embroidery according to the selected embroidery plan.

[0148] When the handpiece to be changed is in a non-zero position, it is also necessary to perform a change operation on the handpiece.

[0149] In this embodiment, performing change on the change machine head specifically includes: P31. Determine the current rotation angle value of the embroidery needle drive shaft of the machine head to be changed.

[0150] P32. Determine whether the current rotation angle value of the embroidery needle driving shaft is within the first rotation angle value range or within the second rotation angle value range.

[0151] Assume that when the rotation angle value of the embroidery needle drive shaft (the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400) is in the range of 231 degrees to 109 degrees, the embroidery needle is located above the workbench; when the rotation angle value of the embroidery needle drive shaft (the first embroidery needle drive shaft 300 or the second embroidery needle drive shaft 400) is in the range of 110 degrees to 230 degrees, the embroidery needle is located below the workbench. Then it can be determined that the first rotation angle value range is 231 degrees to 109 degrees; the second rotation angle value range is 110 degrees to 230 degrees.

[0152] If the current rotation angle value of the embroidery needle driving shaft in step L31 is 280 degrees, it means that the current rotation angle value of the embroidery needle driving shaft is within the first rotation angle value range, and then enter step P33.

[0153] If the current rotation angle value of the embroidery needle driving shaft in step L31 is 180 degrees, it means that the current rotation angle value of the embroidery needle driving shaft is within the second rotation angle value range, and then enter step P34.

[0154] P33. When the current rotation angle value of the embroidery needle drive shaft is within the first rotation angle value range, the first homing step is executed. The first homing step specifically includes: P331. The rotary hook drive shaft rotates to the zero angle value, then rotates to the thread taking angle value and stops rotating.

[0155] The thread taking angle value and the zero position angle value of the rotary shuttle drive shaft can be determined in advance by the rotary shuttle thread taking control method of the computer embroidery machine in Example 2. Assume that the thread taking angle value of the rotary shuttle drive shaft in this embodiment is 200 degrees and the zero position angle value is 100 degrees. Of course, the thread taking angle value of the rotary shuttle drive shaft in this embodiment can be 195 degrees, and the corresponding zero position angle value is 95 degrees; or, the thread taking angle value of the rotary shuttle drive shaft in this embodiment can be 205 degrees, and the corresponding zero position angle value is 105 degrees.

[0156] When the line taking angle value of the rotary hook drive shaft is 200 degrees and the zero position angle value is 100 degrees, the controller first controls the rotary hook drive shaft to rotate to 100 degrees, and then controls the rotary hook drive shaft to rotate to 200 degrees and stops rotating.

[0157] P332. The embroidery needle drive shaft rotates to the zero angle value and stops rotating.

[0158] Assuming that the zero position angle value of the embroidery needle drive shaft in this embodiment is 100 degrees, then after P331, the controller controls the embroidery needle drive shaft to rotate to 100 degrees and stop rotating.

[0159] P333. The rotary hook drive shaft rotates to the zero angle value and stops rotating.

[0160] After P332, the controller controls the rotary shuttle drive shaft to rotate from 200 degrees to 100 degrees and stop rotating. At this time, the first retrieval step is completed.

[0161] P34. When the current rotation angle value of the embroidery needle drive shaft is within the second rotation angle value range, the second homing step is executed. The second homing step specifically includes: P341. The embroidery needle drive shaft rotates to the zero angle value and stops rotating.

[0162] Assuming that the zero-position angle value of the embroidery needle driving shaft in this embodiment is 100 degrees, the controller controls the embroidery needle driving shaft to rotate to 100 degrees and then stops rotating.

[0163] P342. The hook drive shaft rotates to the zero angle value and stops rotating.

[0164] Assuming that the zero position angle value of the rotary hook drive shaft in this embodiment is also 100 degrees, then after P341, the controller controls the rotary hook drive shaft to directly rotate to 100 degrees and stop rotating. At this time, the second homing step is completed.

[0165] In conclusion, in this embodiment, steps P1 to P3 can make the embroidery needle drive shaft and the rotary shuttle drive shaft both be at zero position.

[0166] This embodiment is equivalent to a further improvement on the basis of the embodiment 2. In order to make the thread-taking angle value of the rotary shuttle drive shaft adaptively adjustable according to the size / material / type of the wire material, the embodiment 2 does not set a synchronous belt between the rotary shuttle drive shaft and the embroidery needle drive shaft. In that case, the existing zero-finding method cannot be used. For this reason, this embodiment proposes a new machine head zero-finding control method. The machine head zero-finding control method of this embodiment enables the computer embroidery machine in the embodiment 2 to realize the zero-finding operation. After the zero-finding operation, the subsequent synchronization effect of the embroidery needle drive shaft and the rotary shuttle drive shaft can be better and the difficulty of synchronization adjustment can be lower.

[0167] The above are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application.

Claims

1. A hybrid head structure of a computer embroidery machine, characterized in that: The mixing head structure comprises: At least one tape embroidery machine head (100); At least one flat embroidery machine head (200); A rotary shuttle assembly (500) is arranged in cooperation with the lower side of the coiling embroidery machine head (100) or the flat embroidery machine head (200); A first embroidery needle drive shaft (300) connected to all the tape embroidery machine heads (100); A second embroidery needle drive shaft (400) connected to all flat embroidery machine heads (200); A rotary hook drive shaft connected to all rotary hook components (500); A power device 1, connected to the first embroidery needle driving shaft (300), and used for driving the first embroidery needle driving shaft (300) to rotate; A second power device connected to the second embroidery needle driving shaft (400) and used to drive the second embroidery needle driving shaft (400) to rotate; A power device three is connected to the rotary hook drive shaft and is used to drive the rotary hook drive shaft to rotate.

2. The mixing head structure according to claim 1, characterized in that: The power device 1 comprises: A bearing 1 (310), a movable portion of which is connected to the first embroidery needle driving shaft (300); A pulley A (320), the inner ring portion of which is connected to the first embroidery needle driving shaft (300); Driving motor 1; A pulley 1 B (330), the inner ring of which is connected to the output shaft of the driving motor 1; The driving belt 1 connects the outer ring portion of the pulley 1A (320) and the outer ring portion of the pulley 1B (330).

3. The mixing head structure according to claim 2, characterized in that: The power device 1 also includes: A bearing mounting frame 1 (340) connecting the embroidery machine frame (900) and the fixing portion of the bearing 1 (310); A motor mounting frame (350) is connected to the embroidery machine frame (900) and the driving motor (1); The embroidery machine frame (900) is also provided with a cavity one (910) allowing the driving belt one to pass through.

4. The mixing head structure according to claim 2, characterized in that: The second power device comprises: A second bearing (410), a movable portion of which is connected to the second embroidery needle driving shaft (400); A pulley 2A (420), the inner ring of which is connected to the second embroidery needle driving shaft (400); Driving motor 2; A second pulley B (430), the inner ring of which is connected to the output shaft of the second drive motor; The driving belt 2 connects the outer ring portion of the pulley 2A (420) and the outer ring portion of the pulley 2B (430).

5. The mixing head structure according to claim 4, characterized in that: The second power device also includes: A second bearing mounting frame (440) connecting the embroidery machine frame (900) and the fixing portion of the second bearing (410); A second motor mounting frame (450) is connected to the embroidery machine frame (900) and the second driving motor; The embroidery machine frame (900) is also provided with a second cavity (920) allowing the second driving belt to pass through.

6. The mixing head structure according to claim 4, characterized in that: The flat embroidery machine head (200) is provided with an escape space allowing the first embroidery needle drive shaft (300) to pass through along the length direction of the drive shaft, and the escape space is surrounded by a support cover (360); The shell of the tape embroidery machine head (100) is provided with a through hole allowing the second embroidery needle drive shaft (400) to pass through.

7. The mixing head structure according to claim 4, characterized in that: The power device three comprises: A first pulley (610), the inner ring of which is connected to the rotary hook drive shaft; Pulley drive motor; A second pulley (620), the inner ring of which is connected to the output shaft of the pulley drive motor; A power belt (630) connecting the outer ring portion of the first pulley (610) and the outer ring portion of the second pulley (620); A first bearing (640), a movable portion of which is connected to the rotary shuttle drive shaft, and a fixed portion of which is connected to a first shell wall of the rotary shuttle assembly (500); The second bearing (650) has a movable portion connected to the rotary shuttle drive shaft, and a fixed portion of the second bearing (650) is connected to the bearing support frame (660).

8. The mixing head structure according to claim 7, characterized in that: The power device three also includes: A pulley mounting frame (670) is provided with a first vertical support plate and a second vertical support plate which are arranged opposite to each other; A pulley mounting bearing 1, a fixing portion of which is connected to the first vertical support plate; A pulley mounting bearing 2, a fixing portion of which is connected to the second vertical support plate; A rotating shaft, wherein the first axial end of the rotating shaft is connected to the movable part of the pulley mounting bearing 1, the second axial end of the rotating shaft is connected to the movable part of the pulley mounting bearing 2, the middle part of the rotating shaft is connected to the inner ring part of the second pulley (620), and the first axial end or the second axial end of the rotating shaft is connected to the output shaft of the pulley drive motor.

9. The mixing head structure according to claim 7, characterized in that: The rotary shuttle assembly (500) is provided with a through hole (510) on the second shell wall for allowing the rotary shuttle drive shaft to pass through, and the second shell wall is arranged opposite to the first shell wall.

10. The mixing head structure according to claim 7, characterized in that: The mixing head structure also includes: A first encoder connected to the first embroidery needle drive shaft (300), the first encoder being used to obtain a first rotation angle value corresponding to a rotation position of the first embroidery needle drive shaft (300); A second encoder connected to the second embroidery needle drive shaft (400), the second encoder being used to obtain a second rotation angle value corresponding to a rotation position of the second embroidery needle drive shaft (400); A rotary hook encoder connected to the rotary hook drive shaft, the rotary hook encoder is used to obtain a rotation angle value corresponding to a rotation position of the rotary hook drive shaft; The controller is electrically connected to the first encoder, the second encoder, the rotary shuttle encoder, the first drive motor, the second drive motor and the pulley drive motor.

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