Thread feeding system applied to embroidery machine and embroidery machine

Abstract

The utility model discloses a thread feeding system applied to an embroidery machine and the embroidery machine, and aims to provide the thread feeding system applied to the embroidery machine and the embroidery machine which adopt an active thread feeding mode, actively provide embroidery threads for each needle in the embroidery process so as to improve the quality of embroidery products and adapt to the use requirements of the current multi-station embroidery machine. The thread feeding device comprises a thread feeding unit and a rotary driving mechanism, the thread feeding unit comprises a translation support, and the translation support and a needle bar frame move synchronously; the wire feeding wheel is rotationally arranged on the translation support, and the rotation driving mechanism drives the wire feeding wheel to rotate; the swing arms are sequentially distributed in the moving direction of the translation support, the swing arms are rotationally arranged on the translation support, and line pressing wheels are arranged on the swing arms; the swing arm mechanism is fixedly arranged on the machine frame, the translation support and the needle bar frame move synchronously so that the swing arm mechanism can correspond to the swing arms in sequence, the swing arm mechanism drives the corresponding swing arm to rotate, and the corresponding line pressing wheel can be pressed on the surface of the line feeding wheel.

Description

Technical Field

[0001] The utility model relates to the field of thread feeding of embroidery machines, in particular to a thread feeding system applied to embroidery machines and the embroidery machines. Background Art

[0002] With the development of embroidery machines, the number of heads on embroidery machines has been increasing. Currently, there are dozens or even hundreds of heads in multi-station embroidery machines, and each head is arranged in a row. Each head includes a needle bar rack, on which a row of embroidery needles are arranged. The embroidery thread passing through the embroidery needles in the embroidery machine needs to maintain a suitable tightness, not too tight or too loose; if the embroidery thread is too tight, the fabric will be pulled loose by the embroidery thread during the embroidery process, and even holes will appear under the pulling of the embroidery thread, affecting the quality of the embroidery; if the embroidery thread is too loose, the embroidery thread of the embroidery pattern will be loose, seriously reducing the quality of the embroidery.

[0003] In order to solve the above problems, the current embroidery machine uses a thread presser on the needle bar frame. Each embroidery needle corresponds to a thread presser. Each thread presser includes several thread presser knobs. The embroidery thread corresponding to the embroidery needle first passes through the thread presser knobs of the corresponding thread presser, and then passes through the corresponding embroidery needle. The thread presser knob is manually rotated to adjust the pressing force of the thread presser on the embroidery thread, thereby adjusting the tightness of the embroidery thread. The current embroidery machine uses a thread presser to manually adjust the tightness of the embroidery thread. Although it can solve the problem of the tightness of the embroidery thread to a certain extent, it has the following shortcomings:

[0004] The tightness of the embroidery thread depends on manual adjustment by the operator, but manual adjustment has the problems of low adjustment efficiency, poor consistency of adjustment of the tightness of the embroidery thread, and the quality of the embroidery cannot be guaranteed; there is also the problem of high labor costs.

[0005] On the other hand, the use of a thread crimper to manually adjust the tightness of the embroidery thread is suitable for use in situations where there are fewer heads (3-6 heads) in traditional embroidery machines. Traditional embroidery machines have fewer heads and fewer thread crimpers. Operators can also manually adjust the tightness of the embroidery thread to adapt to the production rhythm; however, with the development of embroidery machines, there are dozens or even hundreds of heads in multi-station embroidery machines, and hundreds or even thousands of embroidery needles (the number of thread crimpers is the same as that of embroidery needles). In this case, manually adjusting the tightness of the embroidery thread cannot adapt to the production rhythm at all. Therefore, the current method of manually adjusting the tightness of the embroidery thread using a thread crimper is increasingly unable to meet the current use needs of multi-station embroidery machines. Utility Model Content

[0006] The first purpose of the utility model is to provide a thread feeding system and an embroidery machine which adopt an active thread feeding method to actively provide embroidery thread for each needle in the embroidery process to improve the quality of embroidery products and meet the use requirements of current multi-station embroidery machines.

[0007] The second purpose of the utility model is to provide a thread feeding system and an embroidery machine which can reduce the manufacturing cost.

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

[0009] A thread feeding system applied to an embroidery machine, the embroidery machine comprises a frame and a needle bar frame, a thread feeding unit and a rotary drive mechanism, the thread feeding unit comprises:

[0010] Translation support, the translation support moves synchronously with the needle bar support;

[0011] The wire feeding wheel is rotatably arranged on the translation bracket, and the rotation driving mechanism drives the wire feeding wheel to rotate;

[0012] A plurality of swing arms are sequentially distributed along the moving direction of the translation bracket, the swing arms are rotatably arranged on the translation bracket, and a wire pressing wheel is arranged on the swing arms;

[0013] A swing arm mechanism is fixedly arranged on the frame, and the translation bracket moves synchronously with the needle bar frame, so that the swing arm mechanism corresponds to each swing arm in turn, and the swing arm mechanism drives a corresponding swing arm to rotate, so that the corresponding wire pressing wheel is pressed tightly on the surface of the wire feeding wheel;

[0014] The embroidery thread of the embroidery machine first passes between the thread feeding wheel and the thread pressing wheel, and then passes through the corresponding embroidery needle. The specific operation of the thread feeding system of this scheme is as follows. The following takes the working process of an embroidery needle of the head of the embroidery machine as an example to describe.

[0015] When the needle bar frame is translated to make the embroidery needle in the working position, the translation bracket and the needle bar frame move synchronously, so that the swing arm corresponding to the embroidery needle moves to the swing arm mechanism; then, the swing arm mechanism drives a corresponding swing arm to rotate, so that the corresponding thread pressing wheel is pressed against the surface of the thread feeding wheel, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel and the thread pressing wheel; then, the thread feeding wheel is driven to rotate by the rotary driving mechanism to actively output the embroidery thread, and the length of the embroidery thread output each time is controlled by the rotation angle of the thread feeding wheel, and the length of the embroidery thread output each time is consistent with a corresponding stitch length in the embroidery process; in this way, the active thread feeding method is adopted to actively provide embroidery thread with a length consistent with the stitch length for each needle in 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, and effectively solving the problems of low manual adjustment efficiency, poor consistency of embroidery thread tightness adjustment, and inability to ensure the quality of the embroidery in the prior art embroidery machine using a thread presser to manually adjust the tightness of the embroidery thread. The thread feeding system of this solution adopts an active thread feeding method to actively provide embroidery thread for each stitch in the embroidery process, so there is no need to manually adjust the tightness of the embroidery thread. It can well adapt to the use requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0016] At the same time, the translational bracket of the thread feeding system of the present invention moves synchronously with the needle bar frame, so that no displacement will occur between the thread feeding wheel on the translational bracket and the needle bar frame. In this way, when the embroidery machine changes colors and the needle bar frame moves, the embroidery thread pressed between the thread feeding wheel and the pressure wheel will not be pulled, thereby further improving the accuracy of the embroidery thread length output by the driving device each time, thereby improving the quality of the embroidery product.

[0017] On the other hand, the needle bar frame of the existing embroidery machine is generally equipped with a row of embroidery needles. The embroidery machine drives the needle bar frame to translate through the embroidery machine color change system to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to different color embroidery threads); and the translation bracket of this scheme moves synchronously with the needle bar frame, so that the swing arm mechanism corresponds to each swing arm in turn; based on this, when any embroidery needle in each head of the embroidery machine translates and changes color, the translation bracket moves synchronously with the needle bar frame, so that the swing arm corresponding to the embroidery needle moves to the swing arm mechanism; then, the swing arm mechanism drives a corresponding swing arm to rotate, so that the corresponding thread pressing wheel is pressed on the surface of the thread feeding wheel, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel and the thread pressing wheel; then, the thread feeding wheel is driven to rotate by the rotary drive mechanism to actively output the embroidery thread. Therefore, the thread feeding unit of this scheme only needs one swing arm mechanism, and there is no need for each swing arm to correspond to a swing arm mechanism, which can effectively reduce the number of swing arm mechanisms, thereby reducing the manufacturing cost.

[0018] Preferably, the translation bracket is directly fixed on the needle bar frame. In this way, the translation bracket can move synchronously with the needle bar frame, and no additional power mechanism is required to drive the translation bracket to move synchronously with the needle bar frame, which can further reduce the production cost and facilitate actual production.

[0019] Preferably, the device further comprises a translation device, which comprises:

[0020] A translation track is arranged on the frame and is parallel to the moving direction of the needle bar frame, and the translation bracket translates along the translation track;

[0021] The translation drive mechanism drives the translation bracket to move synchronously with the needle bar frame along the translation track. In this way, the positions of the translation track and the translation bracket can be arranged according to actual needs, and then the translation drive mechanism drives the translation bracket to move synchronously with the needle bar frame.

[0022] Preferably, a translation track is provided on the frame, the translation track is parallel to the moving direction of the needle bar frame, the translation bracket translates along the translation track, and the translation bracket is connected to the needle bar frame through a connector. In this way, the positions of the translation track and the translation bracket can be arranged according to actual needs, and then the translation bracket and the needle bar frame are connected through a connector, so that the translation bracket moves synchronously with the needle bar frame, and there is no need to arrange an additional power mechanism to drive the translation bracket to move synchronously with the needle bar frame, which is conducive to reducing the manufacturing cost.

[0023] Preferably, the wire feeding unit further comprises an elastic member, which provides elastic force to drive the swing arm to rotate, so as to separate the wire pressing wheel from the wire feeding wheel. In this way, the remaining swing arms other than the one swing arm corresponding to the swing arm mechanism will rotate under the action of the corresponding elastic member, so as to separate the wire pressing wheel from the wire feeding wheel; based on this, in the process of the rotating drive mechanism driving the wire feeding wheel to rotate, it can be ensured that only the embroidery thread between the wire pressing wheel and the wire feeding wheel on the swing arm corresponding to the swing arm mechanism is actively output (the swing arm mechanism drives the corresponding swing arm to rotate, so that the corresponding wire pressing wheel is pressed against the surface of the wire feeding wheel); and the embroidery thread between the wire pressing wheel and the wire feeding wheel on the remaining swing arms is not actively output.

[0024] Preferably, the wire feeding unit also includes a swing arm limiter for limiting the swing angle of the swing arm, and the swing arm limiter is arranged on the translation bracket. When the swing arm rotates under the action of the elastic member and abuts against the swing arm limiter, the wire pressing wheel is separated from the wire feeding wheel.

[0025] Preferably, the swing arm is located above the wire feeding wheel, and the swing arm mechanism is arranged below the swing arm.

[0026] Preferably, the swing arm is located below the wire feeding wheel, and when the swing arm mechanism is separated from the swing arm, the wire pressing wheel on the swing arm will be separated from the wire feeding wheel under the action of its own weight.

[0027] Preferably, the swing arm mechanism is arranged at the rear side of the translation bracket. In this solution, the swing arm mechanism is shielded at the rear side of the translation bracket, which is beneficial to improving the appearance effect on the one hand, and can also prevent operators or other objects from contacting the swing arm mechanism on the other hand.

[0028] Preferably, the wire feeding unit further comprises a wire structure, the wire structure comprises a wire groove located above the wire feeding wheel, the wire groove is V-shaped, and the embroidery thread passes through the wire groove from top to bottom. In this way, the embroidery thread can be guided and limited by the wire groove to ensure that the embroidery thread passes between the wire feeding wheel and the wire pressing wheel. In addition, when the V-shaped wire groove structure is used to limit the embroidery thread, the embroidery thread can enter the bottom of the wire groove through the notch of the wire groove, which facilitates the cooperation between the embroidery thread and the wire groove.

[0029] Preferably, the wire structure further comprises a wire hole, which is located below the wire feeding wheel, and the embroidery thread passes through the wire hole from top to bottom. The wire hole cooperates with the wire groove to guide and limit the embroidery thread, ensuring that the embroidery thread passes between the wire feeding wheel and the wire pressing wheel.

[0030] Preferably, the swing arm mechanism is a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet. In this way, the swing arm is driven to rotate by the pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet, so that the wire pressing wheel is pressed against the surface of the wire feeding wheel, and the structure is simple and easy to operate.

[0031] Preferably, the swing arm mechanism comprises an eccentric wheel that can be connected to the swing arm and a swing arm motor that drives the eccentric wheel to rotate. The swing arm motor drives the eccentric wheel to rotate, and the eccentric wheel abuts against the swing arm, thereby driving the swing arm to rotate, so that the corresponding wire pressing wheel is pressed against the surface of the wire feeding wheel.

[0032] Preferably, there are multiple wire feeding units, the wire feeding wheels of each wire feeding unit are coaxially distributed, the rotating shafts of the wire feeding wheels of each wire feeding unit are connected as one, and each wire feeding unit shares a rotating drive mechanism. In this way, only one rotating drive mechanism is needed to drive the wire feeding wheels of each wire feeding unit to rotate synchronously, which can effectively reduce the number of rotating drive mechanisms and further reduce the manufacturing cost.

[0033] Preferably, there are multiple wire feeding units, and the rotary drive mechanism corresponds to each wire feeding unit one by one, driving the wire feeding wheel of the corresponding wire feeding unit to rotate. In this way, it is convenient to independently layout and apply each wire feeding unit and the rotary drive mechanism.

[0034] An embroidery machine comprises a thread feeding system applied to the embroidery machine.

[0035] The beneficial effects of the utility model are:

[0036] Firstly, an active thread feeding method is adopted to actively provide embroidery thread of the same length as the needle distance for each stitch during the embroidery process, so that the embroidery thread will not pull the fabric, and the embroidery thread of the embroidery pattern is guaranteed to be dense and not loose, thereby improving the quality of the embroidery, and effectively solving the problems of low manual adjustment efficiency, poor consistency of embroidery thread tightness adjustment, and failure to ensure embroidery quality in the prior art embroidery machine using a thread presser to manually adjust the tightness of the embroidery thread.

[0037] Secondly, it adopts active thread feeding mode to actively provide embroidery thread for each stitch in the embroidery process, so there is no need to manually adjust the tightness of the embroidery thread. It can well adapt to the use requirements of the current multi-station embroidery machine and the production rhythm of the current multi-station embroidery machine.

[0038] Thirdly, the wire feeding unit only needs one swing arm mechanism, and there is no need for each swing arm to correspond to a swing arm mechanism, which can effectively reduce the number of swing arm mechanisms and thus reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a three-dimensional partial structural schematic diagram of a certain viewing angle of a thread feeding system of the utility model applied to an embroidery machine.

[0040] Figure 2 It is a three-dimensional partial structural schematic diagram of another viewing angle of the thread feeding system of the utility model applied to the embroidery machine.

[0041] Figure 3The utility model is a partial front view of a thread feeding system applied to an embroidery machine.

[0042] Figure 4 It is a three-dimensional partial structural schematic diagram of an implementation mode of the thread feeding system of the utility model applied to an embroidery machine.

[0043] Figure 5 It is a partial structural schematic diagram of a specific embodiment 4 of the thread feeding system of the utility model applied to an embroidery machine.

[0044] Figure 6 It is a partial structural schematic diagram of a specific embodiment 5 of the thread feeding system of the utility model applied to an embroidery machine.

[0045] In the figure:

[0046] Rack 1;

[0047] Rotary drive mechanism 2, rotary motor 2.1, wire feeding transmission mechanism 2.2;

[0048] Swing arm mechanism 3, telescopic rod 3.1;

[0049] Wire feeding unit 4, translation bracket 4.1, wire feeding wheel 4.2, wire pressing wheel 4.3, swing arm 4.4, wire groove 4.5, wire hole 4.6;

[0050] Embroidery thread 5;

[0051] Needle bar frame 6;

[0052] Translation track 7;

[0053] Translation drive mechanism 8. DETAILED DESCRIPTION

[0054] Specific embodiment 1, as Figure 1-Figure 6 As shown, a thread feeding system applied to an embroidery machine comprises a rotary drive mechanism 2 and a thread feeding unit 4. The embroidery machine comprises a frame 1 and a plurality of machine heads. Each machine head comprises a needle bar frame 6.

[0055] The wire feeding unit 4 includes a translation bracket 4.1, a wire feeding wheel 4.2, a swing arm mechanism 3 and a plurality of swing arms 4.4. The moving direction of the translation bracket 4.1 is parallel to the moving direction of the needle bar frame 6, and the translation bracket 4.1 moves synchronously with the needle bar frame 6. The wire feeding wheel 4.2 is rotatably arranged on the translation bracket 4.1. The axial direction of the wire feeding wheel 4.2 is parallel to the moving direction of the translation bracket 4.1. The rotary drive mechanism 2 drives the wire feeding wheel 4.2 to rotate. The rotary drive mechanism 2 includes a rotary motor 2.1. Each swing arm 4.4 is sequentially distributed along the moving direction of the translation bracket 4.1. The swing arm 4.4 is rotatably arranged on the translation bracket 4.1. The rotating shaft of the swing arm 4.4 is parallel to the rotating shaft of the wire feeding wheel 4.2. A wire pressing wheel 4.3 is arranged on the swing arm 4.4. The wire pressing wheel 4.3 is rotatably arranged on the swing arm 4.4. The swing arm mechanism 3 is fixedly arranged on the frame 1 of the embroidery machine. The translation support 4.1 moves synchronously with the needle bar frame 6, so that the swing arm mechanism 3 corresponds to each swing arm 4.4 in sequence. The swing arm mechanism 3 drives a corresponding swing arm 4.4 to rotate, so that the corresponding pressing wheel 4.3 is pressed tightly on the surface of the wire feeding wheel 4.2.

[0056] The embroidery thread 5 of the embroidery machine first passes between the thread feeding wheel 4.2 and the thread pressing wheel 4.3, and then passes through the corresponding embroidery needle. The specific operation of the thread feeding system of this embodiment is as follows. The following description takes the working process of a certain embroidery needle of the head of the embroidery machine as an example.

[0057] When the needle bar frame 6 translates to place the embroidery needle in the working position, the translation bracket 4.1 moves synchronously with the needle bar frame 6 to move the swing arm 4.4 corresponding to the embroidery needle to the swing arm mechanism 3; then, the swing arm mechanism 3 drives a corresponding swing arm 4.4 to rotate, so that the corresponding thread pressing wheel 4.3 is pressed against the surface of the thread feeding wheel 4.2, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel 4.2 and the thread pressing wheel 4.3; then, the thread feeding wheel 4.2 is driven to rotate by the rotation drive mechanism 2, and the embroidery thread is actively output, and the thread feeding wheel 4.2 rotates to rotate. Angle, to control the length of each output of embroidery thread, the length of each output of embroidery thread is consistent with a corresponding stitch length in the embroidery process; in this way, the active thread feeding method is adopted to actively provide embroidery thread with a length consistent with the stitch length for each needle in 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 embroidery, and effectively solving the problems of low manual adjustment efficiency, poor consistency of embroidery thread tension adjustment, and inability to ensure embroidery quality in the existing technology where embroidery machines use thread pressers to manually adjust the tightness of embroidery threads. The thread feeding system of this scheme adopts an active thread feeding method to actively provide embroidery thread for each needle in the embroidery process, so there is no need to manually adjust the tightness of the embroidery thread, which can well adapt to the use requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0058] At the same time, the translation bracket 4.1 of the thread feeding system of the present scheme moves synchronously with the needle bar frame 6, so that no displacement will occur between the thread feeding wheel 4.2 on the translation bracket 4.1 and the needle bar frame 6. In this way, when the embroidery machine changes colors and the needle bar frame 6 moves, the embroidery thread pressed between the thread feeding wheel 4.2 and the pressure wheel will not be pulled, thereby further improving the accuracy of the embroidery thread length output by the driving device each time, thereby improving the quality of the embroidery product.

[0059] On the other hand, a row of embroidery needles are generally arranged on the needle bar frame 6 of the existing embroidery machine. The embroidery machine drives the needle bar frame 6 to translate through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame 6 (different embroidery needles correspond to embroidery threads of different colors); and the translation bracket 4.1 of the present scheme moves synchronously with the needle bar frame 6, so that the swing arm mechanism 3 corresponds to each swing arm 4.4 in turn; based on this, when any embroidery needle in each head of the embroidery machine translates and changes color, the translation bracket 4.1 moves synchronously with the needle bar frame 6, so that the swing arm 4.4 corresponding to the embroidery needle moves to the swing arm mechanism 3; then, the swing arm mechanism 3 drives a corresponding swing arm 4.4 to rotate, so that the corresponding thread pressing wheel 4.3 is pressed against the surface of the thread feeding wheel 4.2, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel 4.2 and the thread pressing wheel 4.3; then, the thread feeding wheel 4.2 is driven to rotate by the rotating drive mechanism 2 to actively output the embroidery thread. Therefore, the wire feeding unit 4 of this solution only needs one swing arm mechanism 3, and there is no need for each swing arm 4.4 to correspond to a swing arm mechanism 3, which can effectively reduce the number of swing arm mechanisms 3 and thus reduce the manufacturing cost.

[0060] Specific embodiment 2, as Figure 1-Figure 6 As shown, a thread feeding system applied to an embroidery machine includes a thread feeding unit 4 and a rotary drive mechanism 2. The embroidery machine includes a frame 1 and a plurality of machine heads. Each machine head includes a needle bar frame 6. The needle bar frame 6 moves along the guide rails of the embroidery machine, and the guide rails are horizontally distributed. The embroidery machine is provided with a needle bar frame driving mechanism. The needle bar frame driving mechanism drives the needle bar frame 6 to move along the guide rails. The needle bar frame 6 and the needle bar frame driving mechanism are both prior arts, so this application does not elaborate on conventional technical means such as the specific method and structure of the needle bar frame 6 and the needle bar frame driving mechanism.

[0061] The wire feeding unit 4 comprises a translation bracket 4.1, a wire feeding wheel 4.2, a swing arm mechanism 3, an elastic member and a plurality of swing arms 4.4. The moving direction of the translation bracket 4.1 is parallel to the moving direction of the needle bar frame 6, and the translation bracket 4.1 and the needle bar frame 6 move synchronously.

[0062] The wire feeding wheel 4.2 is rotatably arranged on the translation support 4.1. The axial direction of the wire feeding wheel 4.2 is parallel to the moving direction of the translation support 4.1. The rotation drive mechanism 2 drives the wire feeding wheel 4.2 to rotate. The rotation drive mechanism 2 includes a rotation motor 2.1.

[0063] The swing arms 4.4 are sequentially distributed along the moving direction of the translation bracket 4.1. The swing arms 4.4 are rotatably arranged on the translation bracket 4.1. The rotating shaft of the swing arm 4.4 is parallel to the rotating shaft of the wire feeding wheel 4.2. In this embodiment, the swing arms 4.4 share a rotating shaft. Of course, it should be noted that the swing arms 4.4 can also be rotatably arranged on the translation bracket 4.1 through independent rotating shafts.

[0064] A wire pressing wheel 4.3 is provided on the swing arm 4.4. The wire pressing wheel 4.3 is rotatably arranged on the swing arm 4.4. The rotating shaft of the wire pressing wheel 4.3 is parallel to the rotating shaft of the wire feeding wheel 4.2. In this embodiment, the wire pressing wheel 4.3 is distributed on the front side of the wire feeding wheel 4.2. Of course, it should be noted that the wire pressing wheel 4.3 can also be distributed on the rear side of the wire feeding wheel 4.2.

[0065] The swing arm mechanism 3 is fixedly arranged on the frame 1 of the embroidery machine. The translation bracket 4.1 moves synchronously with the needle bar frame 6, so that the swing arm mechanism 3 corresponds to each swing arm 4.4 in turn. The swing arm mechanism 3 drives a corresponding swing arm 4.4 to rotate, so that the corresponding thread pressing wheel 4.3 is pressed tightly on the surface of the thread feeding wheel 4.2.

[0066] In one implementation of this embodiment, the swing arm mechanism 3 is an air cylinder or oil cylinder or electric cylinder or electric push rod or push-pull electromagnet. The telescopic rod 3.1 of the air cylinder or oil cylinder or electric cylinder or electric push rod or push-pull electromagnet constituting the swing arm mechanism 3 faces the swing arm 4.4. When the swing arm mechanism 3 corresponds to one of the swing arms 4.4, the telescopic rod 3.1 of the air cylinder or oil cylinder or electric cylinder or electric push rod or push-pull electromagnet extends and abuts against the swing arm 4.4, thereby driving the swing arm 4.4 to rotate, so that the corresponding wire pressing wheel 4.3 is pressed against the surface of the wire feeding wheel 4.2.

[0067] In another implementation of this embodiment, the swing arm mechanism includes an eccentric wheel that can be connected to the swing arm and a swing arm motor that drives the eccentric wheel to rotate. When the swing arm mechanism 3 corresponds to one of the swing arms 4.4, the swing arm motor drives the eccentric wheel to rotate in the forward direction, the eccentric wheel abuts against the swing arm, and then drives the swing arm to rotate, so that the corresponding wire pressing wheel is pressed against the surface of the wire feeding wheel.

[0068] Of course, it should be noted that the swing arm mechanism can also be other swing arm mechanisms on the market.

[0069] Each swing arm 4.4 corresponds to one elastic member or multiple elastic members (elastic members are not shown in the figure). In this embodiment, the swing arm 4.4 corresponds to the elastic member one by one. The elastic member provides elastic force to drive the swing arm 4.4 to rotate, so that the wire pressing wheel 4.3 is separated from the wire feeding wheel 4.2. The elastic member is a torsion spring, a tension spring, a compression spring, an elastic sheet, or a rubber band.

[0070] There are one or more wire feeding units 4, and each wire feeding unit 4 corresponds to a machine head. In this embodiment, the wire feeding unit 4 corresponds to the machine head of the embroidery machine one by one. Of course, it should be noted that in actual application, the wire feeding unit 4 of this embodiment can also be applied to a part of the machine heads of the embroidery machine.

[0071] In this embodiment, the swing arm 4.4 in the same thread feeding unit 4 corresponds one-to-one with the embroidery needle on the needle bar frame 6 of the corresponding machine head, and the thread pressing wheel 4.3 in the same thread feeding unit 4 corresponds one-to-one with the embroidery needle on the needle bar frame 6 of the corresponding machine head.

[0072] The embroidery thread 5 of the embroidery machine is located between the corresponding thread feeding wheel 4.2 and the thread pressing wheel 4.3 (an embroidery thread is arranged between each thread feeding wheel 4.2 and the thread pressing wheel 4.3), and the embroidery thread 5 first passes between the thread feeding wheel 4.2 and the thread pressing wheel 4.3 (the embroidery thread can be pressed between the thread feeding wheel 4.2 and the thread pressing wheel 4.3), and then passes through the corresponding embroidery needle.

[0073] The specific operation of the thread feeding system of this embodiment is as follows (among the embroidery needles on the same needle bar frame 67 of the embroidery machine, when one of the embroidery needles is working, the other embroidery needles are not working). The following description takes the working process of a certain embroidery needle of the head of the embroidery machine as an example.

[0074] When the needle bar frame 6 translates to place the embroidery needle in the working position, the translation bracket 4.1 moves synchronously with the needle bar frame 6, so that the swing arm 4.4 corresponding to the embroidery needle moves to the swing arm mechanism 3; then, the swing arm mechanism 3 drives a corresponding swing arm 4.4 to rotate, so that the corresponding thread pressing wheel 4.3 is pressed against the surface of the thread feeding wheel 4.2, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel 4.2 and the thread pressing wheel 4.3; then, the thread feeding wheel 4.2 is driven to rotate by the rotation drive mechanism 2, the embroidery thread is actively output, and the thread feeding wheel 4.2 rotates to rotate. The angle is used to control the length of the embroidery thread output each time, and the length of the embroidery thread output each time is consistent with a corresponding stitch length in the embroidery process. In this way, the active thread feeding method is adopted to actively provide embroidery thread with a length consistent with the stitch length for each stitch in the embroidery process, so that the embroidery thread will not pull the fabric, and the embroidery thread of the embroidery pattern is guaranteed to be dense and not loose, thereby improving the quality of the embroidery, and effectively solving the problems of low manual adjustment efficiency, poor consistency of embroidery thread tightness adjustment, and inability to ensure the quality of embroidery in the prior art embroidery machine using a thread presser to manually adjust the tightness of the embroidery thread.

[0075] When the embroidery needle stops working, the telescopic rod 3.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the swing arm mechanism 3 shrinks, or the swing arm motor constituting the swing arm mechanism 3 drives the eccentric wheel to rotate in the opposite direction, and the swing arm 4.4 rotates under the action of the elastic member to separate the thread pressing wheel 4.3 from the thread feeding wheel 4.2. After that, during the process of the rotating drive mechanism 2 driving the thread feeding wheel 4.2 to rotate, the embroidery thread corresponding to the thread pressing wheel 4.3 is not output (the thread pressing wheel 4.3 is separated from the thread feeding wheel 4.2, and the embroidery thread between them will not be output by the rotating thread feeding wheel 4.2). The remaining swing arms 4.4 except the one swing arm 4.4 corresponding to the swing arm mechanism 3 will rotate under the action of the corresponding elastic member to separate the corresponding thread pressing wheel 4.3 from the thread feeding wheel 4.2.

[0076] The thread feeding system of this embodiment adopts an active thread feeding method to actively provide embroidery thread for each stitch in the embroidery process, so there is no need to manually adjust the tightness of the embroidery thread. It can well adapt to the use requirements of current multi-station embroidery machines and the production rhythm of current multi-station embroidery machines.

[0077] At the same time, the translation bracket 4.1 of the thread feeding system of the present embodiment moves synchronously with the needle bar frame 6, so that no displacement will occur between the thread feeding wheel 4.2 on the translation bracket 4.1 and the needle bar frame 6. In this way, when the embroidery machine changes colors and the needle bar frame 6 moves, the embroidery thread pressed between the thread feeding wheel 4.2 and the pressure wheel will not be pulled, thereby further improving the accuracy of the embroidery thread length output by the driving device each time, thereby improving the quality of the embroidery product.

[0078] On the other hand, a row of embroidery needles are generally arranged on the needle bar frame 6 of the existing embroidery machine. The embroidery machine drives the needle bar frame 6 to translate through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame 6 (different embroidery needles correspond to embroidery threads of different colors); and the translation bracket 4.1 of the present scheme moves synchronously with the needle bar frame 6, so that the swing arm mechanism 3 corresponds to each swing arm 4.4 in turn; based on this, when any embroidery needle in each head of the embroidery machine translates and changes color, the translation bracket 4.1 moves synchronously with the needle bar frame 6, so that the swing arm 4.4 corresponding to the embroidery needle moves to the swing arm mechanism 3; then, the swing arm mechanism 3 drives a corresponding swing arm 4.4 to rotate, so that the corresponding thread pressing wheel 4.3 is pressed against the surface of the thread feeding wheel 4.2, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel 4.2 and the thread pressing wheel 4.3; then, the thread feeding wheel 4.2 is driven to rotate by the rotating drive mechanism 2 to actively output the embroidery thread. Therefore, the wire feeding unit 4 of this solution only needs one swing arm mechanism 3, and there is no need for each swing arm 4.4 to correspond to a swing arm mechanism 3, which can effectively reduce the number of swing arm mechanisms 3 and thus reduce the manufacturing cost.

[0079] In this embodiment, Figure 1 , Figure 2As shown, the swing arm 4.4 is located above the wire feeding wheel 4.2, and the swing arm mechanism 3 is arranged below the swing arm 4.4. The telescopic rod 3.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the swing arm mechanism 3 is arranged upward. The swing arm mechanism 3 and the wire pressing wheel 4.3 are located on opposite sides of the rotating shaft of the swing arm 4.4. The elastic member provides elastic force to drive the swing arm 4.4 to rotate upward so that the wire pressing wheel 4.3 is separated from the wire feeding wheel 4.2.

[0080] Of course, it should be noted that the swing arm mechanism 3 can also be arranged above the swing arm 4.4. The swing arm mechanism 3 and the crimping wheel 4.3 are located on the same side of the rotating shaft of the swing arm 4.4.

[0081] The wire feeding unit 4 also includes a swing arm limiter (not shown in the figure). The swing arm limiter is arranged on the translation bracket 4.1 and is used to limit the swing angle of the swing arm 4.4. When the swing arm 4.4 rotates under the action of the elastic member and abuts against the swing arm limiter, the wire pressing wheel 4.3 is separated from the wire feeding wheel 4.2. The swing arm limiter in the same wire feeding unit 4 corresponds to the swing arm 4.4 one by one, or the swing arm limiter in the same wire feeding unit 4 is composed of the same limiter rod, which is parallel to the axis of the wire feeding wheel 4.2.

[0082] In one implementation of this embodiment, the rotary drive mechanism 2 is a rotary motor 2.1, and the rotary shaft of the rotary motor 2.1 is directly connected to the rotary shaft of the wire feeding wheel 4.2.

[0083] In another implementation of this embodiment, Figure 1 , Figure 2 As shown, the rotary drive mechanism 2 includes a rotary motor 2.1 and a wire feeding transmission mechanism 2.2. The wire feeding transmission mechanism connects the rotating shaft of the rotary motor 2.1 and the rotating shaft of the wire feeding wheel 4.2, and the rotary motor 2.1 drives the wire feeding wheel 4.2 to rotate through the wire feeding transmission mechanism. The wire feeding transmission mechanism is a pulley transmission mechanism, a sprocket transmission mechanism, a gear transmission mechanism, or a friction wheel transmission mechanism.

[0084] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 2, except that:

[0085] In this embodiment, the wire feeding unit 4 does not need to be provided with an elastic member, and the elastic member in the wire feeding unit 4 can be omitted. Specifically,

[0086] The swing arm 4.4 is located below the wire feeding wheel 4.2 (not shown in the figure). When the swing arm mechanism 3 is separated from the swing arm 4.4, the wire pressing wheel 4.3 on the swing arm 4.4 will be separated from the wire feeding wheel 4.2 under the action of its own weight. Specifically, "the center of gravity of the assembly consisting of the swing arm 4.4 and the wire pressing wheel 4.3 on the swing arm 4.4" and "the wire pressing wheel 4.3 on the swing arm 4.4" are located on the same side of the rotating shaft of the swing arm 4.4. The swing arm 4.4 is arranged in this way, and during the contraction of the telescopic rod 3.1 of the air cylinder or oil cylinder or electric cylinder or electric push rod or push-pull electromagnet constituting the swing arm mechanism 3, the swing arm 4.4 will rotate downward under the action of the deadweight of the wire pressing wheel 4.3, so that the wire pressing wheel 4.3 rotates downward and separates from the wire feeding wheel 4.2, so that the corresponding embroidery thread is not actively output. In this way, the elastic member in the wire feeding unit 4 can be omitted.

[0087] Of course, it should be noted that in the process of contraction of the telescopic rod 3.1 of the air cylinder or oil cylinder or electric cylinder or electric push rod or push-pull electromagnet constituting the swing arm mechanism 3, in order to further improve the separation efficiency of the wire pressing wheel 4.3 and the wire feeding wheel 4.2 and ensure that the wire pressing wheel 4.3 and the wire feeding wheel 4.2 are separated, the elastic member in the specific embodiment 2 can also be arranged in this embodiment to improve the separation efficiency of the wire pressing wheel 4.3 and the wire feeding wheel 4.2 and ensure that the wire pressing wheel 4.3 and the wire feeding wheel 4.2 are separated.

[0088] Specific embodiment 4: The rest of the structure of this embodiment refers to specific embodiment 1, specific embodiment 2 or specific embodiment 3, and the difference is that:

[0089] In this embodiment, Figure 5 As shown, the translation bracket 4.1 is directly fixed on the needle bar frame 6. For example, the translation bracket 4.1 is fixed on the needle bar frame 6 by bolts, rivets or welding. In this way, the translation bracket 4.1 can move synchronously with the needle bar frame 6, and there is no need to arrange an additional power mechanism to drive the translation bracket 4.1 to move synchronously with the needle bar frame 6, which can further reduce the manufacturing cost; at the same time, it is also convenient for actual manufacturing.

[0090] Specific embodiment 5: The rest of the structure of this embodiment refers to specific embodiment 1, specific embodiment 2 or specific embodiment 3, and the difference is that:

[0091] In this embodiment, Figure 6 As shown, the thread feeding system used in the embroidery machine also includes a translation device. The translation device includes a translation track 7 and a translation drive mechanism 8. The translation track 7 is arranged on the frame 1 and is parallel to the moving direction of the needle bar frame 6. The translation bracket 4.1 translates along the translation track 7.

[0092] The translation drive mechanism 8 drives the translation bracket 4.1 to move synchronously with the needle bar frame 6 along the translation track 7. The translation drive mechanism is an electric cylinder or an electric push rod or a linear module. In this embodiment, the translation drive mechanism includes a translation motor, a screw rod and a nut that cooperates with the screw rod. The screw rod is rotatably arranged on the frame 1 of the embroidery machine, and the screw rod is parallel to the translation track 7. The translation motor drives the screw rod to rotate. The nut is connected to the translation bracket 4.1 through a connecting piece. In this way, the translation bracket 4.1 can be driven by the translation drive mechanism to move synchronously with the needle bar frame 6. Of course, it should be noted that the translation drive mechanism can also be other translation drive mechanisms on the market.

[0093] In this embodiment, there are multiple wire feeding units 4. The translation brackets 4.1 of each wire feeding unit 4 are connected as a whole through a connecting piece. The translation brackets 4.1 of each wire feeding unit 4 are driven by a common translation driving mechanism.

[0094] Specific embodiment 6: The rest of the structure of this embodiment refers to specific embodiment 1, specific embodiment 2 or specific embodiment 3, and the difference is that:

[0095] In this embodiment, a translation track 7 is provided on the frame 1. The translation track 7 is parallel to the moving direction of the needle bar frame 6. The translation bracket 4.1 translates along the translation track 7, and the translation bracket 4.1 is connected to the needle bar frame 6 through a connector. In this way, the positions of the translation track 7 and the translation bracket 4.1 can be arranged according to actual needs, and then the translation bracket 4.1 and the needle bar frame 6 are connected through a connector, so that the translation bracket 4.1 moves synchronously with the needle bar frame 6, and there is no need to arrange an additional power mechanism to drive the translation bracket 4.1 to move synchronously with the needle bar frame 6, which is conducive to reducing the manufacturing cost.

[0096] Specific embodiment 7: The rest of the structure of this embodiment refers to any one of the specific embodiments from specific embodiment 1 to specific embodiment 6, the difference is that:

[0097] like Figure 1 , Figure 2 As shown, the swing arm mechanism 3 is arranged at the rear side of the translation bracket 4.1. In this solution, the swing arm mechanism 3 is shielded at the rear side of the translation bracket 4.1, which is beneficial to improving the appearance effect on the one hand, and can also prevent operators or other objects from contacting the swing arm mechanism 3 on the other hand. Of course, it should be noted that the swing arm mechanism 3 can also be arranged at the front side of the translation bracket 4.1 as needed.

[0098] Further, such as Figure 1 , Figure 2 , Figure 3As shown, the wire feeding unit 4 also includes a wire structure. The wire structure includes a wire groove 4.5 located above the wire feeding wheel 4.2. The wire groove 4.5 is V-shaped. The wire groove 4.5 corresponds one-to-one with the swing arm 4.4. The embroidery thread 6 passes through the wire groove 4.5 from top to bottom. In this embodiment, the wire groove 4.5 is set on the translation bracket 4.1. In this way, the embroidery thread can be guided and limited by the wire groove 4.5 to ensure that the embroidery thread passes between the wire feeding wheel 4.2 and the wire pressing wheel 4.3. In addition, when the V-shaped wire groove 4.5 structure is used to limit the embroidery thread, the embroidery thread can enter the bottom of the wire groove 4.5 through the notch of the wire groove 4.5, which facilitates the cooperation between the embroidery thread and the wire groove 4.5.

[0099] The wire structure also includes a wire hole 4.6, which corresponds to the wire groove 4.5. The wire hole 4.6 is located below the wire feeding wheel 4.2. The embroidery thread passes through the wire hole 4.6 from top to bottom. The wire hole 4.6 and the wire groove 4.5 cooperate to guide and limit the embroidery thread, ensuring that the embroidery thread passes between the wire feeding wheel 4.2 and the wire pressing wheel 4.3.

[0100] In this embodiment, there are multiple wire feeding units 4.

[0101] In one implementation of this embodiment, Figure 4 As shown, the wire feeding wheels 4.2 of each wire feeding unit 4 are coaxially distributed, the rotating shafts of the wire feeding wheels 4.2 of each wire feeding unit 4 are connected as one, and each wire feeding unit 4 shares a rotating drive mechanism 2. In this way, only one rotating drive mechanism 2 is needed to drive the wire feeding wheels 4.2 of each wire feeding unit 4 to rotate synchronously, which can effectively reduce the number of rotating drive mechanisms 2 and further reduce the manufacturing cost.

[0102] In another implementation of this embodiment, the rotary drive mechanism 2 corresponds to the wire feeding unit 4. The rotary drive mechanism 2 drives the wire feeding wheel 4.2 of the corresponding wire feeding unit 4 to rotate. In this way, the independent layout application of each wire feeding unit 4 and the rotary drive mechanism 2 is convenient.

[0103] Specific embodiment 8, an embroidery machine, including a thread feeding system applied to the embroidery machine. The specific structure of the thread feeding system applied to the embroidery machine refers to any specific embodiment of specific embodiment 1 to specific embodiment 7.

[0104] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A thread feeding system applied to an embroidery machine, the embroidery machine comprising a frame and a needle bar frame, characterized in that: It includes a wire feeding unit and a rotary driving mechanism. The wire feeding unit includes: Translation support, the translation support moves synchronously with the needle bar support; The wire feeding wheel is rotatably arranged on the translation bracket, and the rotation driving mechanism drives the wire feeding wheel to rotate; A plurality of swing arms are sequentially distributed along the moving direction of the translation bracket, the swing arms are rotatably arranged on the translation bracket, and a wire pressing wheel is arranged on the swing arms; A swing arm mechanism is fixedly arranged on the frame, and the translation bracket moves synchronously with the needle bar frame, so that the swing arm mechanism corresponds to each swing arm in turn, and the swing arm mechanism drives a corresponding swing arm to rotate, so that the corresponding wire pressing wheel is pressed tightly on the surface of the wire feeding wheel; The embroidery thread of the embroidery machine first passes between the thread feeding wheel and the thread pressing wheel, and then passes through the corresponding embroidery needle.

2. The thread feeding system for an embroidery machine according to claim 1 is characterized in that: The translation support is directly fixed on the needle bar frame.

3. The thread feeding system for an embroidery machine according to claim 1 is characterized in that: Also included is a translation device comprising: A translation track is arranged on the frame and is parallel to the moving direction of the needle bar frame, and the translation bracket translates along the translation track; The translation driving mechanism drives the translation bracket to move synchronously with the needle bar bracket along the translation track.

4. The thread feeding system for an embroidery machine according to claim 1 is characterized in that: The frame is provided with a translation track, which is parallel to the moving direction of the needle bar frame. The translation bracket translates along the translation track, and the translation bracket is connected to the needle bar frame through a connecting piece.

5. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: The wire feeding unit also includes an elastic member, which provides elastic force to drive the swing arm to rotate so as to separate the wire pressing wheel from the wire feeding wheel.

6. The thread feeding system for an embroidery machine according to claim 5 is characterized in that: The wire feeding unit also includes a swing arm limiter for limiting the swing angle of the swing arm, and the swing arm limiter is arranged on the translation bracket. When the swing arm rotates under the action of the elastic member and abuts against the swing arm limiter, the wire pressing wheel is separated from the wire feeding wheel.

7. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: The swing arm is located above the wire feeding wheel, and the swing arm mechanism is arranged below the swing arm.

8. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: The swing arm is located below the wire feeding wheel. When the swing arm mechanism is separated from the swing arm, the wire pressing wheel on the swing arm will be separated from the wire feeding wheel under the action of its own weight.

9. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: The swing arm mechanism is arranged on the rear side of the translation bracket.

10. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: The wire feeding unit also includes a wire structure, which includes a wire groove located above the wire feeding wheel. The wire groove is V-shaped, and the embroidery thread passes through the wire groove from top to bottom.

11. The thread feeding system for an embroidery machine according to claim 10, characterized in that: The wire structure also includes a wire hole, which is located below the wire feeding wheel, and the embroidery thread passes through the wire hole from top to bottom.

12. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: The swing arm mechanism is an air cylinder, an oil cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet; or the swing arm mechanism includes an eccentric wheel that can be connected to the swing arm and a swing arm motor that drives the eccentric wheel to rotate.

13. The thread feeding system for embroidery machine according to claim 1, 2, 3 or 4, characterized in that: There are multiple wire feeding units, the wire feeding wheels of each wire feeding unit are coaxially distributed, the rotating shafts of the wire feeding wheels of each wire feeding unit are connected as a whole, and each wire feeding unit shares a rotating drive mechanism.

14. The thread feeding system for an embroidery machine according to claim 1, 2, 3 or 4, characterized in that: There are multiple wire feeding units, and the rotation driving mechanism corresponds to the wire feeding units one by one, driving the wire feeding wheels of the corresponding wire feeding units to rotate.

15. An embroidery machine, characterized in that: A thread feeding system for an embroidery machine comprising any one of claims 1-14.

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