Translation switching type embroidery machine thread feeding device

Abstract

The utility model discloses a thread feeding device of a translation switching type embroidery machine, and aims to provide the thread feeding device of the translation switching type embroidery machine, which adopts an active thread feeding mode to actively provide embroidery threads for each needle in an embroidery process so as to improve the quality of embroidery products. The device comprises a translation guide rail which is arranged on a rack of the embroidery machine; the wire feeding bracket translates along the translation guide rail; the translation driving mechanism drives the wire feeding bracket to translate along the translation guide rail; the wire feeding wheels are rotationally arranged on the wire feeding support, and the wire feeding wheels are sequentially distributed along the translation guide rail; the driven wheels are arranged on rotating shafts of the wire feeding wheels; the thread feeding motor is arranged on a rack of the embroidery machine; the wire feeding motor drives the driving wheel to rotate, and in the process that the wire feeding support moves along the translation guide rail, the driving wheel is sequentially connected with the driven wheels in a meshed mode or tightly pressed with the driven wheels.

Description

Technical Field

[0001] This utility model relates to the field of embroidery machines, specifically to a translational switching type embroidery machine thread feeding device. Background Technology

[0002] With the development of embroidery machines, the number of machine heads on these machines has been continuously increasing. Current multi-station embroidery machines often have dozens or even hundreds of machine heads, arranged in a row. Each machine head includes a needle bar holder with a row of needles. The embroidery thread passing through the needles in the embroidery machine needs to maintain the appropriate tension—neither too tight nor too loose. If the thread is too tight, the fabric will be pulled loose during embroidery, potentially creating holes and affecting the quality of the embroidery. If the thread is too loose, the embroidery pattern will be unraveled, severely reducing the quality of the embroidery.

[0003] To address the aforementioned issues, current embroidery machines employ a thread presser mounted on the needle bar. Each needle corresponds to one thread presser, and each presser includes several pressing knobs. The embroidery thread corresponding to the needle first passes through the pressing knobs of its respective presser before passing through the needle. The tension of the thread is adjusted by manually rotating the pressing knobs. While this method of manually adjusting thread tension using thread pressers can solve the problem to some extent, it has the following drawbacks.

[0004] The tension of the embroidery thread depends on manual adjustment by the operator. However, manual adjustment has problems such as low adjustment efficiency, poor consistency of thread tension adjustment, and inability to guarantee the quality of the embroidery. At the same time, it also has the problem of high labor costs.

[0005] More importantly, using a thread tensioner to manually adjust the tension of the embroidery thread is suitable for traditional embroidery machines with fewer heads (3-6 heads). With fewer heads and fewer thread tensioners, operators can manually adjust the thread tension to adapt to the production rhythm. However, with the development of embroidery machines, multi-station embroidery machines now have dozens or even hundreds of heads and hundreds, or even thousands, of needles (with the same number of thread tensioners as needles). In this situation, manually adjusting the thread tension is simply no longer sufficient to meet the production rhythm. Therefore, this method of manually adjusting the thread tension using a thread tensioner is increasingly unable to meet the needs of modern multi-station embroidery machines. Utility Model Content

[0006] The primary objective of this invention is to provide a translational switching embroidery machine thread feeding device that actively provides thread for each stitch during the embroidery process, thereby improving the quality of the embroidery. This effectively solves the problems of low manual adjustment efficiency, poor consistency in thread tension adjustment, unreliable embroidery quality, and high labor costs associated with manually adjusting the tension of the embroidery thread using a thread presser in current embroidery machines.

[0007] The second objective of this invention is to provide a translational switching embroidery machine thread feeding device that can adapt to the usage requirements and production rhythm of current multi-station embroidery machines.

[0008] The technical solution of this utility model is:

[0009] A translational switching type embroidery machine thread feeding device includes:

[0010] Translation guide rails are mounted on the frame of the embroidery machine.

[0011] The wire feeding bracket moves along the translation guide rail;

[0012] Translation drive mechanism drives the wire feeding bracket to translate along the translation guide rail;

[0013] Several wire feeding wheels are rotatably mounted on a wire feeding bracket, and each wire feeding wheel is distributed sequentially along a translation guide rail;

[0014] Driven wheel, each wire feeding wheel has the driven wheel on its shaft;

[0015] The thread feeding motor is mounted on the frame of the embroidery machine;

[0016] The drive wheel is driven by the wire feeding motor to rotate. As the wire feeding bracket moves along the translation guide rail, the drive wheel engages with or presses against each other in sequence with each driven wheel.

[0017] The specific operation of the translational switching embroidery machine thread feeding device in this scheme is as follows:

[0018] When the embroidery thread is wrapped around the feed wheel, it can be wrapped one or more times. In order to ensure that the embroidery thread on the feed wheel is not pulled out by the embroidery needle, the embroidery thread is generally wrapped 3-5 times around the feed wheel.

[0019] During the embroidery process of a certain needle on the embroidery machine head, the driven wheel on the shaft of the thread feed wheel corresponding to that needle meshes with or presses against the driving wheel. The thread feed motor drives the corresponding thread feed wheel to rotate through the driving and driven wheels, so as to actively release the embroidery thread wound on the thread feed wheel. The length of the embroidery thread released each time is controlled by the rotation angle of the thread feed wheel. The length of the embroidery thread released at one time is consistent with the stitch length in the embroidery process. In this way, by adopting the active thread feeding method, the embroidery thread of the same length as the stitch length is actively provided for each stitch during the embroidery process, so that the embroidery thread will not pull the fabric and ensure that the embroidery thread of the embroidery pattern is dense and not loose, thereby improving the quality of the embroidery. This effectively solves the problems of low manual adjustment efficiency, poor consistency of embroidery thread tension adjustment, and inability to guarantee the quality of embroidery in the existing technology of using a thread presser to manually adjust the tension of the embroidery thread.

[0020] Meanwhile, the translational switching embroidery machine thread feeding device in this solution adopts an active thread feeding method, which actively provides embroidery thread for each stitch in the embroidery process. Therefore, there is no need to manually adjust the tension of the embroidery thread, which can well adapt to the usage requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0021] On the other hand, the translational switching embroidery machine thread feeding device of this solution can also achieve timely active thread feeding for each embroidery needle using only one thread feeding motor, effectively reducing the number of thread feeding motors and eliminating the need for a separate motor for each thread feeding wheel, thereby effectively reducing manufacturing costs. Specifically, when the embroidery machine changes colors, the needle bar frame moves along the guide rail to switch the embroidery needles on the needle bar frame. During this process, the translational drive mechanism drives the thread feeding bracket to move synchronously with the needle bar frame, automatically switching the driven wheel that meshes with or presses against the drive wheel, so that the thread feeding motor can drive the corresponding thread feeding wheel to rotate through the drive wheel and driven wheel, thus timely actively feeding thread to the embroidery needle. Each time the embroidery machine changes colors, a driven wheel is switched to mesh with the drive wheel, thereby achieving timely active thread feeding for each embroidery needle.

[0022] Preferably, each thread feeder corresponds to one embroidery needle on the embroidery machine, and the embroidery thread corresponding to the needle first passes around the corresponding thread feeder and then through the corresponding embroidery needle.

[0023] Preferably, the system also includes several winding components, each corresponding to a thread feeding wheel, and these components are fixed to the thread feeding bracket. To prevent the embroidery thread on the thread feeding wheel from being pulled out by the needle, this design specifically fixes the winding components to the bracket. When the embroidery thread is wound, it simultaneously passes over both the thread feeding wheel and the corresponding winding component. Since the winding components are fixed and cannot rotate, the pulling force required for the needle to pull out the embroidery thread is effectively increased, ensuring that the needle cannot pull out the embroidery thread when the thread feeding wheel is not actively rotating. This further improves the accuracy of the thread length released by the thread feeding motor each time, thereby improving the quality of the embroidery.

[0024] Preferably, both the driven wheel and the driving wheel are gears. In this way, after the driving wheel engages with each driven wheel in sequence, power is transmitted through the gear engagement, ensuring that the driving wheel and the driven wheel accurately drive the wire feed wheel to rotate.

[0025] Preferably, the driving wheel is a soft gear whose teeth can deform under pressure. Since the embroidery machine needs to switch between a driven wheel and the driving wheel each time it changes color, interference may occur during this process, affecting the normal operation of the thread feeding device in the translational switching embroidery machine. To solve this problem, this solution sets the driving wheel as a soft gear whose teeth can deform under pressure. Thus, even if interference occurs between the driven wheel and the driving wheel during color changes, the teeth of the driving wheel can deform to allow the driven wheel to pass through, enabling the driven wheel to mesh with the driving wheel and ensuring the normal operation of the thread feeding device in the translational switching embroidery machine.

[0026] Preferably, the driven wheel is a soft gear whose teeth can deform under pressure. Since the embroidery machine needs to switch the driven wheel to mesh with the driving wheel every time it changes color, interference may occur during this process, affecting the normal operation of the thread feeding device of the translational switching embroidery machine. To solve this problem, this solution sets the driven wheel as a soft gear whose teeth can deform under pressure. Thus, even if interference occurs between the driven wheel and the driving wheel during color changes, the teeth of the driven wheel can deform to allow the driving wheel to pass, enabling the driven wheel to mesh with the driving wheel and ensuring the normal operation of the thread feeding device of the translational switching embroidery machine.

[0027] Preferably, the driven wheel is a friction wheel, and the driving wheel is also a friction wheel. In this way, the driven wheel and the driving wheel transmit power and motion through the frictional force between them.

[0028] Preferably, the thread feeder is equipped with an annular winding groove. This ensures that the embroidery thread can be stably wound within the annular winding groove of the thread feeder, preventing the thread from running out along the axial direction of the thread feeder.

[0029] A translational switching type embroidery machine thread feeding device includes:

[0030] Translation guide rails are mounted on the frame of the embroidery machine.

[0031] The translation bracket moves along the translation guide rail. The translation bracket is equipped with a wire feeding motor and a drive wheel. The wire feeding motor drives the drive wheel to rotate.

[0032] Translation drive mechanism drives translation support to translate along translation guide rail;

[0033] The thread feeder is mounted on the frame of the embroidery machine.

[0034] Several wire feeding wheels are rotatably mounted on a wire feeding bracket, and each wire feeding wheel is distributed sequentially along a translation guide rail;

[0035] Driven wheel, each wire feeding wheel has the driven wheel on its shaft;

[0036] During the movement of the translation support along the translation guide rail, the driving wheel engages with each driven wheel in sequence or presses against each other.

[0037] The specific operation of the translational switching embroidery machine thread feeding device in this scheme is as follows:

[0038] When the embroidery thread is wrapped around the feed wheel, it can be wrapped one or more times. In order to ensure that the embroidery thread on the feed wheel is not pulled out by the embroidery needle, the embroidery thread is generally wrapped 3-5 times around the feed wheel.

[0039] During the embroidery process of a certain needle on the embroidery machine head, the driven wheel on the shaft of the thread feed wheel corresponding to that needle meshes with or presses against the driving wheel. The thread feed motor drives the corresponding thread feed wheel to rotate through the driving and driven wheels, so as to actively release the embroidery thread wound on the thread feed wheel. The length of the embroidery thread released each time is controlled by the rotation angle of the thread feed wheel. The length of the embroidery thread released at one time is consistent with the stitch length in the embroidery process. In this way, by adopting the active thread feeding method, the embroidery thread of the same length as the stitch length is actively provided for each stitch during the embroidery process, so that the embroidery thread will not pull the fabric and ensure that the embroidery thread of the embroidery pattern is dense and not loose, thereby improving the quality of the embroidery. This effectively solves the problems of low manual adjustment efficiency, poor consistency of embroidery thread tension adjustment, and inability to guarantee the quality of embroidery in the existing technology of using a thread presser to manually adjust the tension of the embroidery thread.

[0040] Meanwhile, the translational switching embroidery machine thread feeding device in this solution adopts an active thread feeding method, which actively provides embroidery thread for each stitch in the embroidery process. Therefore, there is no need to manually adjust the tension of the embroidery thread, which can well adapt to the usage requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0041] On the other hand, the translational switching embroidery machine thread feeding device of this solution can also achieve timely active thread feeding for each embroidery needle using only one thread feeding motor, effectively reducing the number of thread feeding motors and eliminating the need for a separate thread feeding motor for each thread feeding wheel, thereby effectively reducing manufacturing costs. Specifically, when the embroidery machine changes colors, the needle bar frame moves along the guide rail to switch the embroidery needles on the needle bar frame. During this process, the translational drive mechanism drives the translational support, thread feeding motor, and drive wheel to move synchronously with the needle bar frame, automatically switching the driven wheel that meshes with or presses against the drive wheel, so that the thread feeding motor can drive the corresponding thread feeding wheel to rotate through the drive wheel and driven wheel, thus timely actively feeding thread to the embroidery needle. Each time the embroidery machine changes colors, a driven wheel is switched to mesh with the drive wheel, thereby achieving timely active thread feeding for each embroidery needle.

[0042] Preferably, each thread feeder corresponds to one embroidery needle on the embroidery machine, and the embroidery thread corresponding to the needle first passes around the corresponding thread feeder and then through the corresponding embroidery needle.

[0043] Preferably, the system also includes several winding components, each corresponding to a thread feeding wheel, and these components are fixed to the thread feeding bracket. To prevent the embroidery thread on the thread feeding wheel from being pulled out by the needle, this design specifically fixes the winding components to the bracket. When the embroidery thread is wound, it simultaneously passes over both the thread feeding wheel and the corresponding winding component. Since the winding components are fixed and cannot rotate, the pulling force required for the needle to pull out the embroidery thread is effectively increased, ensuring that the needle cannot pull out the embroidery thread when the thread feeding wheel is not actively rotating. This further improves the accuracy of the thread length released by the thread feeding motor each time, thereby improving the quality of the embroidery.

[0044] Preferably, both the driven wheel and the driving wheel are gears. In this way, after the driving wheel engages with each driven wheel in sequence, power is transmitted through the gear engagement, ensuring that the driving wheel and the driven wheel accurately drive the wire feed wheel to rotate.

[0045] Preferably, the driving wheel is a soft gear whose teeth can deform under pressure. Since the embroidery machine needs to switch between a driven wheel and the driving wheel each time it changes color, interference may occur during this process, affecting the normal operation of the thread feeding device in the translational switching embroidery machine. To solve this problem, this solution sets the driving wheel as a soft gear whose teeth can deform under pressure. Thus, even if interference occurs between the driven wheel and the driving wheel during color changes, the teeth of the driving wheel can deform to allow the driven wheel to pass through, enabling the driven wheel to mesh with the driving wheel and ensuring the normal operation of the thread feeding device in the translational switching embroidery machine.

[0046] Preferably, the driven wheel is a soft gear whose teeth can deform under pressure. Since the embroidery machine needs to switch the driven wheel to mesh with the driving wheel every time it changes color, interference may occur during this process, affecting the normal operation of the thread feeding device of the translational switching embroidery machine. To solve this problem, this solution sets the driven wheel as a soft gear whose teeth can deform under pressure. Thus, even if interference occurs between the driven wheel and the driving wheel during color changes, the teeth of the driven wheel can deform to allow the driving wheel to pass, enabling the driven wheel to mesh with the driving wheel and ensuring the normal operation of the thread feeding device of the translational switching embroidery machine.

[0047] Preferably, the driven wheel is a friction wheel, and the driving wheel is also a friction wheel. In this way, the driven wheel and the driving wheel transmit power and motion through the frictional force between them.

[0048] Preferably, the thread feeder is equipped with an annular winding groove. This ensures that the embroidery thread can be stably wound within the annular winding groove of the thread feeder, preventing the thread from running out along the axial direction of the thread feeder.

[0049] The beneficial effects of this utility model are: Attached Figure Description

[0050] Figure 1 This is a schematic diagram of a translational switching embroidery machine thread feeding device according to a specific embodiment of this utility model.

[0051] Figure 2 This is a three-dimensional partial structural diagram of a translational switching embroidery machine thread feeding device according to a specific embodiment of this utility model.

[0052] Figure 3 This is a schematic diagram of a translational switching embroidery machine thread feeding device according to a specific embodiment two of this utility model.

[0053] In the picture:

[0054] Rack 1;

[0055] Translation guide rail 2;

[0056] Cable feed bracket 3;

[0057] 4 wire feed rollers;

[0058] Driven wheel 5;

[0059] Drive wheel 6;

[0060] 7. Wire feeding motor;

[0061] Winding component 8;

[0062] Embroidery thread 9;

[0063] Translation bracket 10. Detailed Implementation

[0064] Specific embodiment one: A translational switching type thread feeding device for an embroidery machine. The machine head of the embroidery machine includes a machine head base and a needle bar frame. The machine head base is fixed on the frame of the embroidery machine. A track is provided on the frame, and the track is horizontally distributed. The needle bar frame moves along the track. The embroidery machine has a needle bar frame translation mechanism. The needle bar frame translation mechanism drives the needle bar frame to move along the track. The machine head base, needle bar frame, and needle bar frame translation mechanism are all prior art; therefore, this application does not elaborate on the specific methods and structures of the machine head base, needle bar frame, and needle bar frame translation mechanism, or other conventional technical means.

[0065] like Figure 1 , Figure 2 As shown, a translational switching embroidery machine thread feeding device includes a translational guide rail 2, a thread feeding bracket 3, a translational drive mechanism, several thread feeding wheels 4, driven wheels 5, a driving wheel 6, and a thread feeding motor 7.

[0066] The translation guide rail 2 is mounted on the frame 1 of the embroidery machine. In this embodiment, the translation guide rail is parallel to the track. The thread feed bracket 3 moves along the translation guide rail.

[0067] A translation drive mechanism drives the thread feed bracket to translate along a translation guide rail (not shown in the diagram). The translation drive mechanism is an electric push rod or a linear module. In this embodiment, the translation drive mechanism includes a translation motor, a lead screw, and a nut that engages with the lead screw. The lead screw is rotatably mounted on the frame of the embroidery machine and is parallel to the translation guide rail. The translation motor drives the lead screw to rotate. The nut is connected to the thread feed bracket. Thus, the thread feed bracket can be driven to translate along the translation guide rail by the translation drive mechanism.

[0068] The wire feeding wheel 4 is rotatably mounted on the wire feeding bracket 3, and each wire feeding wheel is distributed sequentially along the translation guide rail. Each wire feeding wheel has a driven wheel 5 on its rotating shaft. In this embodiment, the driven wheel corresponds to each wire feeding wheel, and the driven wheel is fixed on the rotating shaft of the corresponding wire feeding wheel.

[0069] The thread feeding motor 7 is mounted on the frame 1 of the embroidery machine. The thread feeding motor drives the drive wheel 6 to rotate. The thread feeding motor can be a stepper motor, a servo motor, or another type of motor. The drive wheel is located below or above each driven wheel; in this embodiment, the drive wheel is located below each driven wheel.

[0070] In this embodiment, the translational switching embroidery machine thread feeding device corresponds one-to-one with the machine head of the embroidery machine. Of course, it should be noted that in actual application, the active thread feeding mechanism for embroidery machines of this embodiment can also be applied to a portion of the machine heads in the embroidery machine, with each translational switching embroidery machine thread feeding device corresponding to one machine head.

[0071] Each thread feed roller corresponds to one embroidery needle on the embroidery machine. The embroidery thread corresponding to the needle first passes around the corresponding thread feed roller and then through the corresponding embroidery needle. In this embodiment, the thread feed rollers of the translational switching embroidery machine thread feed device correspond one-to-one with the embroidery needles on the corresponding needle bar frame.

[0072] During the movement of the wire feeding bracket along the translation guide rail, the driving wheel engages with each driven wheel in sequence or presses against each other (when the driving wheel engages with or presses against one of the driven wheels, the remaining driven wheels separate from the driving wheel).

[0073] In this embodiment, the headstock is part of the frame of the embroidery machine, that is, the frame of the embroidery machine includes the headstock.

[0074] The specific operation of the translational switching embroidery machine thread feeding device in this embodiment is as follows:

[0075] When the embroidery thread 9 is wrapped around the feed wheel, it can be wrapped one or more times. In order to ensure that the embroidery thread on the feed wheel is not pulled out by the embroidery needle, the embroidery thread is generally wrapped 3-5 times around the feed wheel.

[0076] During the embroidery process of a certain needle on the embroidery machine head, the driven wheel on the shaft of the thread feed wheel corresponding to that needle meshes with or presses against the driving wheel. The thread feed motor drives the corresponding thread feed wheel to rotate through the driving and driven wheels, so as to actively release the embroidery thread wound on the thread feed wheel. The length of the embroidery thread released each time is controlled by the rotation angle of the thread feed wheel. The length of the embroidery thread released at one time is consistent with the stitch length in the embroidery process. In this way, by adopting the active thread feeding method, the embroidery thread of the same length as the stitch length is actively provided for each stitch during the embroidery process, so that the embroidery thread will not pull the fabric and ensure that the embroidery thread of the embroidery pattern is dense and not loose, thereby improving the quality of the embroidery. This effectively solves the problems of low manual adjustment efficiency, poor consistency of embroidery thread tension adjustment, and inability to guarantee the quality of embroidery in the existing technology of using a thread presser to manually adjust the tension of the embroidery thread.

[0077] Meanwhile, the translational switching embroidery machine thread feeding device in this solution adopts an active thread feeding method, which actively provides embroidery thread for each stitch in the embroidery process. Therefore, there is no need to manually adjust the tension of the embroidery thread, which can well adapt to the usage requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0078] On the other hand, the translational switching embroidery machine thread feeding device of this solution can also achieve timely active thread feeding for each embroidery needle using only one thread feeding motor, effectively reducing the number of thread feeding motors and eliminating the need for a separate motor for each thread feeding wheel, thereby effectively reducing manufacturing costs. Specifically, when the embroidery machine changes colors, the needle bar frame moves along the guide rail to switch the embroidery needles on the needle bar frame. During this process, the translational drive mechanism drives the thread feeding bracket to move synchronously with the needle bar frame, automatically switching the driven wheel that meshes with or presses against the drive wheel, so that the thread feeding motor can drive the corresponding thread feeding wheel to rotate through the drive wheel and driven wheel, thus timely actively feeding thread to the embroidery needle. Each time the embroidery machine changes colors, a driven wheel is switched to mesh with the drive wheel, thereby achieving timely active thread feeding for each embroidery needle.

[0079] In one embodiment of this invention, both the driven wheel and the driving wheel are gears. As the wire feeding bracket moves along the translation guide rail, the driving wheel sequentially meshes with each of the driven wheels. This gear meshing connection transmits power, ensuring that the driving wheel and driven wheels accurately drive the wire feeding wheel to rotate.

[0080] In another embodiment of this invention, both the driven wheel and the driving wheel are friction wheels. As the wire feed bracket moves along the translation guide rail, the driving wheel sequentially presses against each of the driven wheels. The driven wheels and the driving wheel transmit power and motion through the friction between them.

[0081] like Figure 2 As shown, a translational switching type embroidery machine thread feeding device also includes several winding components 8, each corresponding to a thread feeding wheel, and the winding components are fixed to the thread feeding bracket. To ensure that the embroidery thread on the thread feeding wheel is not pulled out by the embroidery needle, this design specifically fixes the winding components to the bracket. When the embroidery thread is wound, the embroidery thread 9 simultaneously passes over the thread feeding wheel and the corresponding winding component. Since the winding component is fixed and cannot rotate, it effectively increases the pulling force required for the embroidery needle to pull out the embroidery thread, ensuring that the embroidery needle cannot pull out the embroidery thread when the thread feeding wheel is not actively rotating. This further improves the accuracy of the thread length released by the thread feeding motor each time, thereby improving the quality of the embroidery.

[0082] In this embodiment, the winding component is a winding rod, and the winding rod is parallel to the axis of rotation of the feed wheel. It should be noted, however, that the winding component can also be other forms of winding structure, such as a winding block with winding grooves.

[0083] The winding component is located below or above the feed rollers. In this embodiment, the winding component is located below the corresponding feed roller. Since the row of needles and guide rails on the needle bar are horizontally distributed, and the feed rollers are distributed sequentially along the guide rails, the distance between two adjacent feed rollers is relatively small. Placing the winding component below or above the feed rollers facilitates its arrangement and ensures the distance between the winding component and the corresponding feed roller. Of course, it should be noted that the winding component can also be arranged on the left or right side of the feed rollers.

[0084] Furthermore, the feed wheel and the driven wheel are located on opposite sides of the feed bracket. This arrangement facilitates the placement of the feed wheel and the driven wheel, improves structural compactness, and prevents collisions between the feed wheel, the driven wheel, and the driving wheel.

[0085] Furthermore, the thread feeder is equipped with an annular winding groove. This ensures that the embroidery thread can be stably wound within the annular winding groove of the thread feeder, preventing the thread from running out along the axial direction of the thread feeder.

[0086] Specific embodiment two: A translational switching type thread feeding device for an embroidery machine. The embroidery machine head includes a headstock and a needle bar holder. The headstock is fixed to the frame of the embroidery machine. A track is provided on the frame, and the track is horizontally distributed. The needle bar holder moves along the track. The embroidery machine has a needle bar holder translation mechanism. The needle bar holder translation mechanism drives the needle bar holder to move along the track. The headstock, needle bar holder, and needle bar holder translation mechanism are all prior art; therefore, this application will not elaborate on the specific methods and structures of the headstock, needle bar holder, and needle bar holder translation mechanism, or other conventional technical means.

[0087] like Figure 3 As shown, a translational switching embroidery machine thread feeding device includes a translational guide rail 2, a thread feeding bracket 3, a translational bracket 10, a translational drive mechanism, several thread feeding wheels 4, driven wheels 5, a driving wheel 6, and a thread feeding motor 7.

[0088] The translation guide rail 2 is mounted on the frame 1 of the embroidery machine. In this embodiment, the translation guide rail is parallel to the track. The thread feed bracket moves along the translation guide rail.

[0089] The translation bracket 10 translates along the translation guide rail 2. The wire feeding motor 7 and the drive wheel 6 are mounted on the translation bracket 10. The wire feeding motor drives the drive wheel to rotate. The wire feeding motor can be a stepper motor, a servo motor, or another type of motor.

[0090] A translation drive mechanism drives the translation bracket to translate along the translation guide rail (not shown in the diagram). The translation drive mechanism is an electric push rod or a linear module. In this embodiment, the translation drive mechanism includes a translation motor, a lead screw, and a nut that engages with the lead screw. The lead screw is rotatably mounted on the frame of the embroidery machine and is parallel to the translation guide rail. The translation motor drives the lead screw to rotate. The nut is connected to the translation bracket. Thus, the translation drive mechanism can drive the translation bracket to translate along the translation guide rail.

[0091] The thread feed bracket 3 is mounted on the frame 1 of the embroidery machine. The thread feed bracket is fixed to the frame of the embroidery machine by bolts, rivets, or welding.

[0092] The wire feeding rollers 4 are rotatably mounted on the wire feeding bracket, and each wire feeding roller is distributed sequentially along the translation guide rail. Each wire feeding roller has a driven roller on its shaft. In this embodiment, the driven rollers correspond one-to-one with the wire feeding rollers, and the driven rollers are fixed to the shafts of their respective wire feeding rollers. The driving roller is located below or above each driven roller; in this embodiment, the driving roller is located below each driven roller.

[0093] In this embodiment, the translational switching embroidery machine thread feeding device corresponds one-to-one with the machine head of the embroidery machine. Of course, it should be noted that in actual application, the active thread feeding mechanism for embroidery machines of this embodiment can also be applied to a portion of the machine heads in the embroidery machine, with each translational switching embroidery machine thread feeding device corresponding to one machine head.

[0094] Each thread feed roller corresponds to one embroidery needle on the embroidery machine. The embroidery thread corresponding to the needle first passes around the corresponding thread feed roller and then through the corresponding embroidery needle. In this embodiment, the thread feed rollers of the translational switching embroidery machine thread feed device correspond one-to-one with the embroidery needles on the corresponding needle bar frame.

[0095] During the movement of the translation support along the translation guide rail, the driving wheel engages with each driven wheel in sequence or presses against each other (when the driving wheel engages with or presses against one of the driven wheels, the remaining driven wheels separate from the driving wheel).

[0096] In this embodiment, the headstock is part of the frame of the embroidery machine, that is, the frame of the embroidery machine includes the headstock.

[0097] The specific operation of the translational switching embroidery machine thread feeding device in this embodiment is as follows:

[0098] When the embroidery thread is wrapped around the feed wheel, it can be wrapped one or more times. In order to ensure that the embroidery thread on the feed wheel is not pulled out by the embroidery needle, the embroidery thread is generally wrapped 3-5 times around the feed wheel.

[0099] During the embroidery process of a certain needle on the embroidery machine head, the driven wheel on the shaft of the thread feed wheel corresponding to that needle meshes with or presses against the driving wheel. The thread feed motor drives the corresponding thread feed wheel to rotate through the driving and driven wheels, so as to actively release the embroidery thread wound on the thread feed wheel. The length of the embroidery thread released each time is controlled by the rotation angle of the thread feed wheel. The length of the embroidery thread released at one time is consistent with the stitch length in the embroidery process. In this way, by adopting the active thread feeding method, the embroidery thread of the same length as the stitch length is actively provided for each stitch during the embroidery process, so that the embroidery thread will not pull the fabric and ensure that the embroidery thread of the embroidery pattern is dense and not loose, thereby improving the quality of the embroidery. This effectively solves the problems of low manual adjustment efficiency, poor consistency of embroidery thread tension adjustment, and inability to guarantee the quality of embroidery in the existing technology of using a thread presser to manually adjust the tension of the embroidery thread.

[0100] Meanwhile, the translational switching embroidery machine thread feeding device in this solution adopts an active thread feeding method, which actively provides embroidery thread for each stitch in the embroidery process. Therefore, there is no need to manually adjust the tension of the embroidery thread, which can well adapt to the usage requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0101] On the other hand, the translational switching embroidery machine thread feeding device of this solution can also achieve timely active thread feeding for each embroidery needle using only one thread feeding motor, effectively reducing the number of thread feeding motors and eliminating the need for a separate thread feeding motor for each thread feeding wheel, thereby effectively reducing manufacturing costs. Specifically, when the embroidery machine changes colors, the needle bar frame moves along the guide rail to switch the embroidery needles on the needle bar frame. During this process, the translational drive mechanism drives the translational support, thread feeding motor, and drive wheel to move synchronously with the needle bar frame, automatically switching the driven wheel that meshes with or presses against the drive wheel, so that the thread feeding motor can drive the corresponding thread feeding wheel to rotate through the drive wheel and driven wheel, thus timely actively feeding thread to the embroidery needle. Each time the embroidery machine changes colors, a driven wheel is switched to mesh with the drive wheel, thereby achieving timely active thread feeding for each embroidery needle.

[0102] In one embodiment of this invention, both the driven wheel and the driving wheel are gears. As the wire feeding bracket moves along the translation guide rail, the driving wheel sequentially meshes with each of the driven wheels. This gear meshing connection transmits power, ensuring that the driving wheel and driven wheels accurately drive the wire feeding wheel to rotate.

[0103] In another embodiment of this invention, both the driven wheel and the driving wheel are friction wheels. As the wire feed bracket moves along the translation guide rail, the driving wheel sequentially presses against each of the driven wheels. The driven wheels and the driving wheel transmit power and motion through the friction between them.

[0104] like Figure 3As shown, a translational switching type embroidery machine thread feeding device also includes several winding components 8, each corresponding to a thread feeding wheel, and fixed to a thread feeding bracket. To prevent the embroidery thread on the thread feeding wheel from being pulled out by the embroidery needle, this design specifically fixes the winding components to the bracket. When the embroidery thread is wound, it simultaneously passes over both the thread feeding wheel and the corresponding winding component. Since the winding component is fixed and cannot rotate, it effectively increases the pulling force required for the embroidery needle to pull out the thread, ensuring that the needle cannot pull out the thread when the thread feeding wheel is not actively rotating. This further improves the accuracy of the thread length released by the thread feeding motor each time, thereby improving the quality of the embroidery.

[0105] In this embodiment, the winding component is a winding rod, and the winding rod is parallel to the axis of rotation of the feed wheel. It should be noted, however, that the winding component can also be other forms of winding structure, such as a winding block with winding grooves.

[0106] The winding component is located below or above the feed rollers. In this embodiment, the winding component is located below the corresponding feed roller. Since the row of needles and guide rails on the needle bar are horizontally distributed, and the feed rollers are distributed sequentially along the guide rails, the distance between two adjacent feed rollers is relatively small. Placing the winding component below or above the feed rollers facilitates its arrangement and ensures the distance between the winding component and the corresponding feed roller. Of course, it should be noted that the winding component can also be arranged on the left or right side of the feed rollers.

[0107] Furthermore, the feed wheel and the driven wheel are located on opposite sides of the feed bracket. This arrangement facilitates the placement of the feed wheel and the driven wheel, improves structural compactness, and prevents collisions between the feed wheel, the driven wheel, and the driving wheel.

[0108] Furthermore, the thread feeder is equipped with an annular winding groove. This ensures that the embroidery thread can be stably wound within the annular winding groove of the thread feeder, preventing the thread from running out along the axial direction of the thread feeder.

[0109] In this specific embodiment, the remaining structure is the same as in either specific embodiment one or specific embodiment two, except that...

[0110] The driving gear and each driven gear are hardened gears, such as metal gears or hard plastic gears.

[0111] In this fourth specific embodiment, the remaining structure is the same as in the first or second specific embodiment, except that...

[0112] Each driven gear is a hardened gear, such as a metal gear or a hard plastic gear.

[0113] The driving gear is a soft gear whose teeth can deform under pressure. For example, the driving gear may be made entirely of rubber or soft plastic, or each tooth of the driving gear may be made of rubber or soft plastic. In this embodiment, the soft plastic is a plastic that can deform under pressure, such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc.

[0114] The teeth of the drive wheel can be made of rubber or soft plastic in the following two ways.

[0115] Firstly, the driving gear consists of a circular gear body and teeth. The gear body is made of metal or hard plastic, and the teeth are made of rubber or soft plastic. Each tooth is circumferentially fixed to the outer circumferential surface of the gear body.

[0116] Secondly, the driving gear consists of a gear body, an outer gear ring, and individual teeth. The gear body is made of metal or hard plastic, while the outer gear ring and individual teeth are made of rubber or soft plastic. The outer gear ring is fitted and fixed onto the gear body.

[0117] Because each time the embroidery machine changes color, the driven wheel moves synchronously with the needle bar frame to switch the engagement of the driven wheel with the driving wheel. However, during this engagement process, interference may occur between the driven and driving wheels, potentially jamming the needle bar frame. This causes the needle bar frame to become stuck during color changes, hindering its smooth movement and leading to color-changing malfunctions. To solve this problem, this solution sets the driving wheel as a soft gear whose teeth can deform under pressure. Thus, even if interference occurs between the driven and driving wheels during color changes, the teeth of the driving wheel can deform to allow the driven wheel to mesh, enabling the needle bar frame to move smoothly into position and ensuring successful color changes.

[0118] In this specific embodiment five, the remaining structure is the same as in specific embodiment one or specific embodiment two, except that...

[0119] The driving gear is a hardened gear, such as a metal gear or a hard plastic gear.

[0120] Each driven gear is a soft gear whose teeth can deform under pressure. For example, the driven gear is entirely made of rubber or soft plastic, or each tooth of the driven gear is made of rubber or soft plastic. In this embodiment, the soft plastic is a plastic that can deform under pressure, such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc.

[0121] The teeth of the driven gear can be made of rubber or soft plastic in the following two ways.

[0122] Firstly, the driven gear consists of a circular gear body and teeth. The gear body is made of metal or hard plastic, and the teeth are made of rubber or soft plastic. Each tooth is circumferentially fixed to the outer circumferential surface of the gear body.

[0123] Secondly, the driven gear consists of a gear body, an outer gear ring, and individual teeth. The gear body is made of metal or hard plastic, while the outer gear ring and individual teeth are made of rubber or soft plastic. The outer gear ring is fitted and fixed onto the gear body.

[0124] Because each time the embroidery machine changes color, the driven wheel moves synchronously with the needle bar frame to switch the engagement of the driven wheel with the driving wheel, interference may occur during this process. This can jam the needle bar frame, causing it to become stuck and hindering its smooth movement during color changes, leading to malfunctions. To solve this problem, this solution uses a soft gear with teeth that deform under pressure. Thus, even if interference occurs between the driven and driving wheels during color changes, the teeth of the driven wheel can deform to allow the driving wheel to mesh, ensuring smooth movement of the needle bar frame and guaranteeing successful color changes.

[0125] In this sixth specific embodiment, the remaining structure is the same as in the first or second specific embodiment, except that...

[0126] The driving gear is a soft gear whose teeth can deform under pressure. For example, the driving gear may be made entirely of rubber or soft plastic, or each tooth of the driving gear may be made of rubber or soft plastic. In this embodiment, the soft plastic is a plastic that can deform under pressure, such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc.

[0127] The teeth of the drive wheel can be made of rubber or soft plastic in the following two ways.

[0128] Firstly, the driving gear consists of a circular gear body and teeth. The gear body is made of metal or hard plastic, and the teeth are made of rubber or soft plastic. Each tooth is circumferentially fixed to the outer circumferential surface of the gear body.

[0129] Secondly, the driving gear consists of a gear body, an outer gear ring, and individual teeth. The gear body is made of metal or hard plastic, while the outer gear ring and individual teeth are made of rubber or soft plastic. The outer gear ring is fitted and fixed onto the gear body.

[0130] Each driven gear is a soft gear whose teeth can deform under pressure. For example, the driven gear is entirely made of rubber or soft plastic, or each tooth of the driven gear is made of rubber or soft plastic. In this embodiment, the soft plastic is a plastic that can deform under pressure, such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc.

[0131] The teeth of the driven gear can be made of rubber or soft plastic in the following two ways.

[0132] Firstly, the driven gear consists of a circular gear body and teeth. The gear body is made of metal or hard plastic, and the teeth are made of rubber or soft plastic. Each tooth is circumferentially fixed to the outer circumferential surface of the gear body.

[0133] Secondly, the driven gear consists of a gear body, an outer gear ring, and individual teeth. The gear body is made of metal or hard plastic, while the outer gear ring and individual teeth are made of rubber or soft plastic. The outer gear ring is fitted and fixed onto the gear body.

[0134] Because each time the embroidery machine changes color, the driven wheel moves synchronously with the needle bar frame to switch the engagement of the driven wheel with the driving wheel, interference may occur during this process. This can cause the needle bar frame to jam, hindering its smooth movement and leading to color-changing malfunctions. To solve this problem, this solution sets the driving and driven wheels as soft gears whose teeth can deform under pressure. Thus, even if interference occurs during color changing, the teeth of both wheels can deform to allow the driven wheel to engage with the corresponding driving wheel, ensuring smooth movement of the needle bar frame and guaranteeing successful color changing.

[0135] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A translational switching type thread feeding device for an embroidery machine, characterized in that, include: Translation guide rails are mounted on the frame of the embroidery machine. The wire feeding bracket moves along the translation guide rail; Translation drive mechanism drives the wire feeding bracket to translate along the translation guide rail; Several wire feeding wheels are rotatably mounted on a wire feeding bracket, and each wire feeding wheel is distributed sequentially along a translation guide rail; Driven wheel, each wire feeding wheel has the driven wheel on its shaft; The thread feeding motor is mounted on the frame of the embroidery machine; The drive wheel is driven by the wire feeding motor to rotate. As the wire feeding bracket moves along the translation guide rail, the drive wheel engages with or presses against each other in sequence with each driven wheel.

2. The translational switching type embroidery machine thread feeding device according to claim 1, characterized in that, Each thread feeder corresponds to one embroidery needle on the embroidery machine. The embroidery thread corresponding to the needle first passes around the corresponding thread feeder and then through the corresponding embroidery needle.

3. The translational switching type embroidery machine thread feeding device according to claim 1, characterized in that, It also includes several winding components, each corresponding to a wire feeding wheel, and the winding components are fixed to the wire feeding bracket.

4. A translational switching type embroidery machine thread feeding device according to claim 1, 2, or 3, characterized in that, Both the driven wheel and the driving wheel are gears.

5. The translational switching type embroidery machine thread feeding device according to claim 4, characterized in that, The driving gear is a soft gear whose teeth can deform under pressure.

6. The translational switching type embroidery machine thread feeding device according to claim 4, characterized in that, The driven gear is a soft gear whose teeth can deform under pressure.

7. A translational switching type embroidery machine thread feeding device according to claim 1, 2, or 3, characterized in that, Both the driven wheel and the driving wheel are friction wheels.

8. A translational switching type thread feeding device for an embroidery machine, characterized in that, include: Translation guide rails are mounted on the frame of the embroidery machine. The translation bracket moves along the translation guide rail. The translation bracket is equipped with a wire feeding motor and a drive wheel. The wire feeding motor drives the drive wheel to rotate. Translation drive mechanism drives translation support to translate along translation guide rail; The thread feeder is mounted on the frame of the embroidery machine. Several wire feeding wheels are rotatably mounted on a wire feeding bracket, and each wire feeding wheel is distributed sequentially along a translation guide rail; Driven wheel, each wire feeding wheel has the driven wheel on its shaft; During the movement of the translation support along the translation guide rail, the driving wheel engages with each driven wheel in sequence or presses against each other.

9. The translational switching type embroidery machine thread feeding device according to claim 8, characterized in that, Each thread feeder corresponds to one embroidery needle on the embroidery machine. The embroidery thread corresponding to the needle first passes around the corresponding thread feeder and then through the corresponding embroidery needle.

10. A translational switching type embroidery machine thread feeding device according to claim 8, characterized in that, It also includes several winding components, each corresponding to a wire feeding wheel, and the winding components are fixed to the wire feeding bracket.

11. A translational switching type embroidery machine thread feeding device according to claim 8, 9, or 10, characterized in that, Both the driven wheel and the driving wheel are gears.

12. The translational switching type embroidery machine thread feeding device according to claim 11, characterized in that, The driving gear is a soft gear whose teeth can deform under pressure.

13. The translational switching type embroidery machine thread feeding device according to claim 11, characterized in that, The driven gear is a soft gear whose teeth can deform under pressure.

14. A translational switching type embroidery machine thread feeding device according to claim 8, 9, or 10, characterized in that, Both the driven wheel and the driving wheel are friction wheels.

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