Telescopic clutch type thread feeding system and embroidery machine

Abstract

The utility model discloses a telescopic clutch type thread feeding system and an embroidery machine, and aims to provide the telescopic clutch type thread feeding system 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 meet the use requirements of the current multi-station embroidery machine. The device comprises a wire feeding unit, a wire feeding driving mechanism and a wire pressing translation mechanism. The wire feeding unit comprises a wire feeding bracket; the wire feeding wheel is rotationally arranged on the wire feeding support, and the wire feeding driving mechanism drives the wire feeding wheel to rotate; the sliding pieces are distributed in sequence and are arranged on the wire feeding support in a sliding mode, and wire pressing wheels matched with the wire feeding wheels are arranged on the sliding pieces; one of the thread feeding bracket and the thread pressing translation mechanism is fixedly arranged, and the other one of the thread feeding bracket and the thread pressing translation mechanism synchronously moves with the needle bar frame, so that the thread pressing translation mechanism sequentially corresponds to each sliding piece, and the thread pressing translation mechanism drives the corresponding sliding piece to translate, so that the thread pressing wheel on the corresponding sliding piece is tightly pressed on the surface of the thread feeding wheel.

Description

Technical Field

[0001] The utility model relates to the field of thread feeding of embroidery machines, in particular to a telescopic clutch type thread feeding system and an embroidery machine. 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 telescopic clutch thread feeding system and an embroidery machine which adopts 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 telescopic clutch thread feeding system and an embroidery machine which can reduce the manufacturing cost.

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

[0009] A telescopic clutch type thread feeding system is applied to an embroidery machine. The embroidery machine includes a frame and a needle bar frame. The telescopic clutch type thread feeding system includes a thread feeding unit, a thread feeding driving mechanism and a thread pressing translation mechanism. The thread feeding unit includes:

[0010] Wire feeding bracket;

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

[0012] A plurality of sliding members distributed in sequence, each sliding member being slidably arranged on the wire feeding bracket, and a wire pressing wheel cooperating with the wire feeding wheel being arranged on the sliding member;

[0013] One of the wire feeding bracket and the wire pressing translation mechanism is fixed, and the other moves synchronously with the needle bar bracket, so that the wire pressing translation mechanism corresponds to each sliding member in turn, and the wire pressing translation mechanism drives a corresponding sliding member to translate, so that the wire pressing wheel on the corresponding sliding member 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 working process of the telescopic clutch thread feeding system of this scheme is as follows. The following describes the working process of a certain embroidery needle of the head of the embroidery machine as an example.

[0015] When the needle bar frame is translated to make the embroidery needle in the working position, the thread feeding bracket or the thread pressing translation mechanism moves synchronously with the needle bar frame, so that the sliding member corresponding to the embroidery needle corresponds to the thread pressing translation mechanism; then, the thread pressing translation mechanism drives a corresponding sliding member to translate, 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 drive mechanism drives the thread feeding wheel to rotate, actively outputs the embroidery thread, and controls the length of the embroidery thread output each time by the rotation angle of the thread feeding wheel, and the length of the embroidery thread output once is consistent with a corresponding stitch length in the embroidery process; in this way, the active thread feeding method is adopted, and embroidery thread with a length consistent with the stitch length is actively provided 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 telescopic clutch thread feeding system of the present invention 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] On the other hand, a row of embroidery needles are generally arranged on the needle bar frame of the existing embroidery machines. The embroidery machine drives the needle bar frame to move horizontally through the color changing system of the embroidery machine to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to embroidery threads of different colors); and the present scheme moves synchronously with the needle bar frame through the thread feeding bracket or the thread pressing translation mechanism, so that the thread pressing translation mechanism corresponds to each sliding member in turn; based on this, when any embroidery needle in each head of the embroidery machine moves horizontally and changes color, the thread feeding bracket or the thread pressing translation mechanism moves synchronously with the needle bar frame, so that the sliding member corresponding to the embroidery needle corresponds to the thread pressing translation mechanism; then, the thread pressing translation mechanism drives a corresponding sliding member to move horizontally, 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 drive mechanism drives the thread feeding wheel to rotate, and actively outputs the embroidery thread. Therefore, the wire feeding unit of the present solution only needs one wire pressing translation mechanism, and there is no need for each sliding member to correspond to a wire pressing translation mechanism, which can effectively reduce the number of wire pressing translation mechanisms, thereby reducing the manufacturing cost.

[0017] Preferably, the thread pressing translation mechanism is fixed on the frame, and the thread feeding bracket is fixed on the needle bar frame, so that the thread feeding bracket and the needle bar frame move synchronously. In this way, the thread feeding bracket can move synchronously with the needle bar frame, and there is no need to arrange an additional power mechanism to drive the thread feeding bracket to move synchronously with the needle bar frame, which can further reduce the production cost; at the same time, it is also convenient for actual production. On the other hand, the thread feeding bracket moves synchronously with the needle bar frame, so there will be no displacement between the thread feeding wheel on the thread feeding 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 pressing wheel will not be pulled, thereby further improving the accuracy of the embroidery thread length output by the drive device each time, thereby improving the quality of the embroidery product.

[0018] Preferably, it further includes a translation drive device, the wire pressing translation mechanism is fixed on the frame, the wire feeding bracket is slidably arranged on the frame, the sliding direction of the wire feeding bracket is parallel to the moving direction of the needle bar frame, and the translation drive device drives the wire feeding bracket to move synchronously with the needle bar frame. In this way, the position of the wire feeding bracket can be arranged according to actual needs, and then the translation drive device drives the wire feeding bracket to move synchronously with the needle bar frame.

[0019] Preferably, it further comprises a translation drive device, the wire feeding bracket is fixed on the frame, the wire pressing translation mechanism is slidably arranged on the frame, and the translation drive device drives the wire pressing translation mechanism to move synchronously with the needle bar frame. In this way, the positions of the wire feeding bracket and the wire pressing translation mechanism can be arranged according to actual needs, and then the wire pressing translation mechanism is driven by the translation drive device to move synchronously with the needle bar frame.

[0020] Preferably, the wire feeding unit further comprises an elastic element corresponding to the sliding member, and the elastic element provides elastic force to drive the corresponding sliding member to move so as to separate the wire pressing wheel from the wire feeding wheel. In this way, the sliding members except for the one sliding member corresponding to the wire pressing translation mechanism will move under the action of the corresponding elastic element so as to separate the wire pressing wheel from the wire feeding wheel; based on this, in the process of the wire feeding 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 sliding member corresponding to the wire pressing translation mechanism is actively output (the wire pressing translation mechanism drives the corresponding one sliding member to move 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 sliding members is not actively output.

[0021] Preferably, the sliding member is provided with an abutment portion, and the line pressing translation mechanism drives the sliding member to translate via the abutment portion. This is conducive to the line pressing translation mechanism driving the sliding member to translate.

[0022] Preferably, the wire pressing wheel is arranged at one end of the sliding member, and the other end of the sliding member extends downward or upward to form the abutment portion, so that the wire pressing translation mechanism can drive the sliding member to translate.

[0023] Preferably, it also includes an elastic abutment element, and the wire pressing translation mechanism translates a sliding member corresponding to the elastic abutment element so that the wire pressing wheel on the corresponding sliding member is pressed against the surface of the wire feeding wheel, and the elastic abutment element includes an abutment member that can be abutted and connected with the sliding member and an elastic support element that supports the abutment member. In this way, in the process in which the wire pressing translation mechanism drives the sliding member to move through the elastic abutment element so that the wire pressing wheel is pressed against the wire feeding wheel, the elastic deformation of the elastic support element can be used to compensate for the gap between the sliding member and the wire pressing wheel that is loosened due to manufacturing errors or long-term use, so that the wire pressing wheel can be stably and reliably pressed against the wire feeding wheel, thereby ensuring the stability of wire feeding.

[0024] Preferably, the wire pressing translation mechanism is a cylinder, oil cylinder, electric cylinder, electric push rod, or push-pull electromagnet, and a guide hole is provided at one end of the telescopic rod of the cylinder, oil cylinder, electric cylinder, electric push rod, or push-pull electromagnet constituting the wire pressing translation mechanism, and the guide hole extends along the axial direction of the telescopic rod, the abutment is slidably arranged in the guide hole, and the elastic support element is located between the bottom surface of the guide hole and the abutment. In this way, it is ensured that the abutment can be stably slidably connected to the telescopic rod, and the elastic support element can be stably installed on the telescopic rod.

[0025] Preferably, a detachably connected guide sleeve is provided at one end of the telescopic rod, the guide sleeve is coaxial or parallel to the telescopic rod, the inner hole of the guide sleeve constitutes the guide hole, the end surface of the telescopic rod constitutes the bottom surface of the guide hole, a stopper is provided on the inner wall of the guide hole, a stopper is provided on the abutment member to cooperate with the stopper, and the stopper abuts against the stopper under the action of the elastic support element. In this way, before the guide sleeve is installed on the telescopic rod, the elastic abutment element can be first installed in the guide sleeve, and then the guide sleeve can be installed on one end of the telescopic rod, thereby realizing the installation of the elastic abutment element, and then facilitating the installation and replacement of the elastic abutment element.

[0026] Preferably, the wire pressing translation mechanism is a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet. In this way, the sliding member is driven to slide 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.

[0027] Preferably, the wire pressing translation mechanism comprises an eccentric wheel that can be connected to the sliding member and a driving motor that drives the eccentric wheel to rotate. The driving motor drives the eccentric wheel to rotate, and the eccentric wheel abuts against the sliding member, thereby driving the sliding member to move, so that the corresponding wire pressing wheel is pressed against the surface of the wire feeding wheel.

[0028] 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 wire feeding drive mechanism. In this way, only one wire feeding 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 wire feeding drive mechanisms and further reduce the manufacturing cost.

[0029] Preferably, there are multiple wire feeding units, and the wire feeding 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 for each wire feeding unit and the wire feeding drive mechanism to be independently arranged and applied.

[0030] An embroidery machine comprises a telescopic clutch type thread feeding system.

[0031] The beneficial effects of the utility model are:

[0032] 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.

[0033] 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.

[0034] Thirdly, a wire feeding unit only needs one wire pressing translation mechanism, and there is no need for each sliding member to correspond to a wire pressing translation mechanism, which can effectively reduce the number of wire pressing translation mechanisms and thus reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional structural schematic diagram of a telescopic clutch type wire feeding system of the utility model.

[0036] Figure 2 The utility model is a side view of a telescopic clutch type wire feeding system.

[0037] Figure 3 The utility model is a schematic diagram of a partial cross-sectional structure of an elastic supporting element of a telescopic clutch type wire feeding system.

[0038] Figure 4 It is a three-dimensional partial structural schematic diagram of an implementation mode of a telescopic clutch wire feeding system of the utility model.

[0039] Figure 5 It is a planar structural schematic diagram of a second implementation mode of a telescopic clutch type wire feeding system of the utility model.

[0040] Figure 6 It is a planar structural schematic diagram of a third implementation mode of a telescopic clutch type wire feeding system of the utility model.

[0041] In the figure:

[0042] Wire feeding drive mechanism 1, rotating motor 1.1, transmission mechanism 1.2;

[0043] Wire pressing translation mechanism 2, telescopic rod 2.1;

[0044] Wire feeding unit 3, wire feeding bracket 3.1, wire feeding wheel 3.2, wire pressing wheel 3.3, sliding member 3.4, abutting portion 3.5, elastic element 3.6;

[0045] Elastic abutting element 4, elastic supporting element 4.0, abutting member 4.1, guide sleeve 4.2, guide hole 4.3, stopper 4.4, limit block 4.5;

[0046] Rack 5;

[0047] Needle bar frame 6;

[0048] Translation drive device 7;

[0049] Pan track 8. DETAILED DESCRIPTION

[0050] Specific embodiment 1, as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, a telescopic clutch thread feeding system is applied to an embroidery machine. The embroidery machine includes a frame 5 and a plurality of machine heads. Each machine head includes a needle bar frame 6. The needle bar frame 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 to move along the guide rails. The needle bar frame 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 and the needle bar frame driving mechanism.

[0051] A telescopic clutch wire feeding system comprises a wire feeding unit 3, a wire feeding driving mechanism 1 and a wire pressing translation mechanism 2. The wire feeding unit 3 comprises a wire feeding bracket 3.1, a wire feeding wheel 3.2, an elastic element 3.6 and a plurality of sliding members 3.4 distributed in sequence.

[0052] The wire feeding wheel 3.2 is rotatably arranged on the wire feeding bracket 3.1. The axial direction of the wire feeding wheel 3.2 is parallel to the moving direction of the needle bar frame. The wire feeding drive mechanism 1 drives the wire feeding wheel 3.2 to rotate. In this embodiment, the wire feeding drive mechanism 1 is arranged on the wire feeding bracket 3.1.

[0053] In one implementation of this embodiment, the wire feeding drive mechanism 1 is a rotary motor 1.1, and the rotating shaft of the rotary motor 1.1 is directly connected to the rotating shaft of the wire feeding wheel 3.2.

[0054] In another implementation of this embodiment, the wire feeding drive mechanism 1 includes a rotating motor 1.1 and a transmission mechanism 1.2. The transmission mechanism connects the rotating shaft of the rotating motor 1.1 and the rotating shaft of the wire feeding wheel 3.2, and the rotating motor 1.1 drives the wire feeding wheel 3.2 to rotate through the transmission mechanism. The transmission mechanism is a pulley transmission mechanism, a sprocket transmission mechanism, a gear transmission mechanism, or a friction wheel transmission mechanism.

[0055] Each sliding member 3.4 is sequentially distributed along the axial direction of the wire feeding wheel 3.2. Each sliding member 3.4 is slidably arranged on the wire feeding bracket 3.1. In this embodiment, the sliding direction of the sliding member 3.4 is perpendicular to the axial direction of the wire feeding wheel 3.2.

[0056] The sliding member 3.4 is provided with a wire pressing wheel 3.3 which cooperates with the wire feeding wheel 3.2. The wire pressing wheel 3.3 is rotatably arranged on the sliding member 3.4. The rotating shaft of the wire pressing wheel 3.3 is parallel to the rotating shaft of the wire feeding wheel 3.2.

[0057] In this embodiment, the wire pressing translation mechanism 2 is fixedly arranged on the frame. The wire feeding bracket 3.1 moves synchronously with the needle bar frame, and the moving direction of the wire feeding bracket 3.1 is parallel to the moving direction of the needle bar frame. The wire feeding bracket 3.1 moves synchronously with the needle bar frame, so that the wire pressing translation mechanism 2 corresponds to each sliding member 3.4 in turn, and the wire pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate, so that the wire pressing wheel 3.3 on the corresponding sliding member 3.4 is pressed tightly on the surface of the wire feeding wheel 3.2.

[0058] The elastic element 3.6 corresponds to the sliding member 3.4, and each sliding member 3.4 corresponds to one or more elastic elements 3.6. In this embodiment, the elastic elements 3.6 correspond to the sliding members 3.4 one by one. The elastic element 3.6 provides elastic force to drive the corresponding sliding member 3.4 to move, so that the wire pressing wheel 3.3 is separated from the wire feeding wheel 3.2. The elastic element 3.6 is a tension spring or a compression spring or an elastic sheet or a rubber band. Figure 1 The elastic element 3.6 shown in FIG. 3 is a tension spring.

[0059] In one implementation of this embodiment, the wire pressing translation mechanism 2 is a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet. During the extension of the telescopic rod 2.1 of the pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet constituting the wire pressing translation mechanism 2, the telescopic rod 2.1 drives the sliding member 3.4 to slide, so that the wire pressing wheel 3.3 is pressed against the surface of the wire feeding wheel 3.2.

[0060] In another implementation of this embodiment, the wire pressing translation mechanism 2 includes an eccentric wheel that can be connected to the sliding member and a driving motor (not shown in the figure) that drives the eccentric wheel to rotate. The driving motor drives the eccentric wheel to rotate in the forward direction, and the eccentric wheel abuts against the sliding member 3.4, thereby driving the sliding member 3.4 to move, so that the corresponding wire pressing wheel 3.3 is pressed tightly against the surface of the wire feeding wheel 3.2.

[0061] There are one or more wire feeding units 3, and each wire feeding unit 3 corresponds to a machine head. In this embodiment, the wire feeding unit 3 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 3 of this embodiment can also be applied to a part of the machine heads of the embroidery machine.

[0062] In this embodiment, the sliding member 3.4 in the same thread feeding unit 3 corresponds one-to-one to the embroidery needle on the needle bar frame of the corresponding machine head, and the thread pressing wheel 3.3 in the same thread feeding unit 3 corresponds one-to-one to the embroidery needle on the needle bar frame of the corresponding machine head.

[0063] The embroidery thread of the embroidery machine is located between the corresponding thread feeding wheel 3.2 and the thread pressing wheel 3.3 (an embroidery thread is arranged between each thread feeding wheel 3.2 and the thread pressing wheel 3.3), and the embroidery thread first passes between the thread feeding wheel 3.2 and the thread pressing wheel 3.3 (the embroidery thread can be pressed between the thread feeding wheel 3.2 and the thread pressing wheel 3.3), and then passes through the corresponding embroidery needle.

[0064] The specific operation of the telescopic clutch thread feeding system of this embodiment is as follows (among the embroidery needles on the same needle bar frame 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 on the head of the embroidery machine as an example.

[0065] When the needle bar frame translates to place the embroidery needle in the working position, the thread feeding bracket 3.1 moves synchronously with the needle bar frame to move the sliding member 3.4 corresponding to the embroidery needle to the thread pressing translation mechanism 2;

[0066] Next, the thread pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate. Specifically, during the extension of the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the thread pressing translation mechanism 2, the telescopic rod 2.1 drives the sliding member 3.4 to slide, so that the thread pressing wheel 3.3 is pressed tightly against the surface of the thread feeding wheel 3.2; or the driving motor drives the eccentric wheel to rotate forward, and the eccentric wheel abuts against the sliding member 3.4, thereby driving the sliding member 3.4 to move, so that the corresponding thread pressing wheel 3.3 is pressed tightly against the surface of the thread feeding wheel 3.2; thereby, the embroidery thread corresponding to the embroidery needle is pressed tightly between the thread feeding wheel 3.2 and the thread pressing wheel 3.3;

[0067] Next, the thread feeding drive mechanism 1 drives the thread feeding wheel 3.2 to rotate, actively outputs the embroidery thread, and the rotation angle of the thread feeding wheel 3.2 is used to control the length of the embroidery thread output each time, and the length of the embroidery thread output once is consistent with a corresponding stitch length in the embroidery process; in this way, the active thread feeding method is adopted, and embroidery thread with a length consistent with the stitch length is actively provided 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 guarantee the quality of the embroidery, which are caused by the embroidery machine using a thread presser to manually adjust the tightness of the embroidery thread in the prior art.

[0068] When the embroidery needle stops working, the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the thread pressing translation mechanism 2 shrinks, or the driving motor drives the eccentric wheel to rotate in the opposite direction, and the sliding member 3.4 moves under the action of the elastic element 3.6 to separate the thread pressing wheel 3.3 from the thread feeding wheel 3.2. Thereafter, during the process of the thread feeding drive mechanism 1 driving the thread feeding wheel 3.2 to rotate, the embroidery thread corresponding to the thread pressing wheel 3.3 is not output (the thread pressing wheel 3.3 is separated from the thread feeding wheel 3.2, and the embroidery thread between them will not be output by the rotating thread feeding wheel 3.2). The remaining sliding members 3.4 except for the one sliding member 3.4 corresponding to the thread pressing translation mechanism 2 will all move under the action of the corresponding elastic element 3.6 to separate the corresponding thread pressing wheel 3.3 from the thread feeding wheel 3.2.

[0069] The telescopic clutch 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.

[0070] On the other hand, the needle bar frame of the existing embroidery machine is generally provided with a row of embroidery needles. The embroidery machine drives the needle bar frame to move horizontally through the embroidery machine color changing 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 present solution moves synchronously with the needle bar frame through the thread feeding bracket 3.1 or the thread pressing translation mechanism 2, so that the thread pressing translation mechanism 2 corresponds to each sliding member 3.4 in turn; based on this, when any embroidery needle in each head of the embroidery machine moves horizontally to change color, the thread feeding bracket 3.1 or the thread pressing translation mechanism 2 corresponds to each sliding member 3.4 in turn. The support 3.1 or the thread pressing translation mechanism 2 moves synchronously with the needle bar frame, so that the sliding member 3.4 corresponding to the embroidery needle corresponds to the thread pressing translation mechanism 2; then, the thread pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate, so that the corresponding thread pressing wheel 3.3 is pressed tightly on the surface of the thread feeding wheel 3.2, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel 3.2 and the thread pressing wheel 3.3; then, the thread feeding wheel 3.2 is driven to rotate by the thread feeding drive mechanism 1, and the embroidery thread is actively output. Therefore, the thread feeding unit 3 of this scheme only needs one thread pressing translation mechanism 2, and there is no need for each sliding member 3.4 to correspond to a thread pressing translation mechanism 2, which can effectively reduce the number of thread pressing translation mechanisms 2, thereby reducing the manufacturing cost.

[0071] In one implementation of this embodiment, Figure 4 As shown, the wire feeding bracket 3.1 is fixed on the needle bar frame 6 so that the wire feeding bracket 3.1 moves synchronously with the needle bar frame. For example, the wire feeding bracket 3.1 is fixed to the needle bar frame by bolts, riveting or welding. In this way, the wire feeding bracket 3.1 can move synchronously with the needle bar frame, and there is no need to arrange an additional power mechanism to drive the wire feeding bracket 3.1 to move synchronously with the needle bar frame, which can further reduce the production cost; at the same time, it is also convenient for actual production. On the other hand, the wire feeding bracket 3.1 moves synchronously with the needle bar frame, so there will be no displacement between the wire feeding wheel 3.2 on the wire feeding bracket 3.1 and the needle bar frame. In this way, when the embroidery machine changes color and the needle bar frame moves, the embroidery thread pressed between the wire feeding wheel 3.2 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.

[0072] In another implementation of this embodiment, Figure 5As shown, a telescopic clutch wire feeding system also includes a translation drive device 7. The translation drive device is arranged on the frame. The wire feeding bracket 3.1 is slidably arranged on the frame, and the sliding direction of the wire feeding bracket 3.1 is parallel to the moving direction of the needle bar frame. Specifically, a translation track is provided on the frame, and the translation track is parallel to the moving direction of the needle bar frame, and the wire feeding bracket 3.1 slides along the translation track. The translation drive device drives the wire feeding bracket 3.1 to move synchronously with the needle bar frame. The translation drive device is an electric cylinder or an electric push rod or a linear module. In this embodiment, the translation drive device includes a translation motor, a screw rod and a nut matched with the screw rod. The screw rod is rotatably arranged on the frame of the embroidery machine, and the screw rod is parallel to the translation track. The translation motor drives the screw rod to rotate. The nut is connected to the wire feeding bracket 3.1 through a connecting piece.

[0073] Of course, it should be noted that the translation drive device may also be other translation drive devices on the market.

[0074] Further, such as Figure 1 , Figure 2 As shown, abutment portion 3.5 is provided on the sliding member 3.4. The wire pressing translation mechanism 2 drives the sliding member 3.4 to translate through the abutment portion 3.5. Specifically, during the extension of the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the wire pressing translation mechanism 2, the telescopic rod 2.1 abuts against the abutment portion 3.5, thereby driving the sliding member 3.4 to slide, so that the wire pressing wheel 3.3 is pressed against the surface of the wire feeding wheel 3.2; or the driving motor drives the eccentric wheel to rotate forward, and the eccentric wheel abuts against the abutment portion 3.5, thereby driving the sliding member 3.4 to move, so that the corresponding wire pressing wheel 3.3 is pressed against the surface of the wire feeding wheel 3.2.

[0075] Further, such as Figure 1 , Figure 2 As shown, the crimping wheel 3.3 is arranged at one end of the sliding member 3.4, and the other end of the sliding member 3.4 extends downward or upward to form the abutment portion 3.5. In this embodiment, the other end of the sliding member 3.4 extends downward to form the abutment portion 3.5.

[0076] The wire pressing translation mechanism 2 and the wire pressing wheel 3.3 are located on opposite sides of the wire feeding wheel 3.2, and the wire pressing translation mechanism 2 and the wire feeding wheel 3.2 are located on the same side of the abutment portion 3.5. This is conducive to the arrangement of the wire pressing translation mechanism 2, the wire pressing wheel 3.3 and the wire pressing translation mechanism 2.

[0077] Specific embodiment 2, as Figure 1 , Figure 2 , Figure 6As shown, a telescopic clutch thread feeding system is applied to an embroidery machine. The embroidery machine includes a frame 5 and a plurality of machine heads. Each machine head includes a needle bar frame 6. The needle bar frame 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 to move along the guide rails. The needle bar frame 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 and the needle bar frame driving mechanism.

[0078] A telescopic clutch wire feeding system comprises a wire feeding unit 3, a wire feeding drive mechanism 1, a wire pressing translation mechanism 2 and a translation drive device 7. The wire feeding unit 3 comprises a wire feeding bracket 3.1, a wire feeding wheel 3.2, an elastic element 3.6, and a plurality of sliding members 3.4 distributed in sequence.

[0079] The wire feeding wheel 3.2 is rotatably arranged on the wire feeding bracket 3.1. The axial direction of the wire feeding wheel 3.2 is parallel to the moving direction of the needle bar frame. The wire feeding drive mechanism 1 drives the wire feeding wheel 3.2 to rotate. In this embodiment, the wire feeding drive mechanism 1 can be arranged on the wire feeding bracket 3.1 or on the frame as needed.

[0080] In one implementation of this embodiment, the wire feeding drive mechanism 1 is a rotary motor 1.1, and the rotating shaft of the rotary motor 1.1 is directly connected to the rotating shaft of the wire feeding wheel 3.2.

[0081] In another implementation of this embodiment, the wire feeding drive mechanism 1 includes a rotating motor 1.1 and a transmission mechanism. The transmission mechanism connects the rotating shaft of the rotating motor 1.1 and the rotating shaft of the wire feeding wheel 3.2, and the rotating motor 1.1 drives the wire feeding wheel 3.2 to rotate through the transmission mechanism. The transmission mechanism is a pulley transmission mechanism, a sprocket transmission mechanism, a gear transmission mechanism, or a friction wheel transmission mechanism.

[0082] Each sliding member 3.4 is sequentially distributed along the axial direction of the wire feeding wheel 3.2. Each sliding member 3.4 is slidably arranged on the wire feeding bracket 3.1. In this embodiment, the sliding direction of the sliding member 3.4 is perpendicular to the axial direction of the wire feeding wheel 3.2.

[0083] The sliding member 3.4 is provided with a wire pressing wheel 3.3 which cooperates with the wire feeding wheel 3.2. The wire pressing wheel 3.3 is rotatably arranged on the sliding member 3.4. The rotating shaft of the wire pressing wheel 3.3 is parallel to the rotating shaft of the wire feeding wheel 3.2.

[0084] In this embodiment, the wire feeding bracket 3.1 is fixedly mounted on the frame. For example, the wire feeding bracket 3.1 is fixedly mounted on the frame by bolts, welding or riveting. The wire pressing translation mechanism 2 is slidably arranged on the frame, and the sliding of the wire pressing translation mechanism 2 is parallel to the moving direction of the needle bar frame. Specifically, a translation track 8 is provided on the frame, and the translation track is parallel to the moving direction of the needle bar frame. A slide seat is provided on the translation track, and the wire pressing translation mechanism is installed on the slide seat. The translation drive device 7 drives the wire pressing translation mechanism 2 to move synchronously with the needle bar frame, so that the wire pressing translation mechanism 2 corresponds to each sliding member 3.4 in turn, and the wire pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate, so that the wire pressing wheel 3.3 on the corresponding sliding member 3.4 is pressed tightly on the surface of the wire feeding wheel 3.2.

[0085] The translation drive device 7 is arranged on the frame. The translation drive device 7 is an electric cylinder or an electric push rod or a linear module. In this embodiment, the translation drive device 7 includes a translation motor, a screw rod and a nut matched with the screw rod. The screw rod is rotatably arranged on the frame of the embroidery machine, and the screw rod is parallel to the translation track. The translation motor drives the screw rod to rotate. The nut is connected to the wire feeding bracket 3.1 through a connecting piece.

[0086] Of course, it should be noted that the translation drive device may also be other translation drive devices on the market.

[0087] In one implementation of this embodiment, the wire pressing translation mechanism 2 is a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet. During the extension of the telescopic rod 2.1 of the pneumatic cylinder, a hydraulic cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet constituting the wire pressing translation mechanism 2, the telescopic rod 2.1 drives the sliding member 3.4 to slide, so that the wire pressing wheel 3.3 is pressed against the surface of the wire feeding wheel 3.2.

[0088] In another implementation of this embodiment, the wire pressing translation mechanism 2 includes an eccentric wheel that can be connected to the sliding member and a driving motor (not shown in the figure) that drives the eccentric wheel to rotate. The driving motor drives the eccentric wheel to rotate in the forward direction, and the eccentric wheel abuts against the sliding member 3.4, thereby driving the sliding member 3.4 to move, so that the corresponding wire pressing wheel 3.3 is pressed tightly against the surface of the wire feeding wheel 3.2.

[0089] The elastic element 3.6 corresponds to the sliding member 3.4, and each sliding member 3.4 corresponds to one or more elastic elements 3.6. In this embodiment, the elastic elements 3.6 correspond to the sliding members 3.4 one by one. The elastic element 3.6 provides elastic force to drive the corresponding sliding member 3.4 to move, so that the wire pressing wheel 3.3 is separated from the wire feeding wheel 3.2. The elastic element 3.6 is a tension spring or a compression spring or an elastic sheet or a rubber band. Figure 1 The elastic element 3.6 shown in FIG. 3 is a tension spring.

[0090] There are one or more wire feeding units 3, and each wire feeding unit 3 corresponds to a machine head. In this embodiment, the wire feeding unit 3 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 3 of this embodiment can also be applied to a part of the machine heads of the embroidery machine.

[0091] In this embodiment, the sliding member 3.4 in the same thread feeding unit 3 corresponds one-to-one to the embroidery needle on the needle bar frame of the corresponding machine head, and the thread pressing wheel 3.3 in the same thread feeding unit 3 corresponds one-to-one to the embroidery needle on the needle bar frame of the corresponding machine head.

[0092] The embroidery thread of the embroidery machine is located between the corresponding thread feeding wheel 3.2 and the thread pressing wheel 3.3 (an embroidery thread is arranged between each thread feeding wheel 3.2 and the thread pressing wheel 3.3), and the embroidery thread first passes between the thread feeding wheel 3.2 and the thread pressing wheel 3.3 (the embroidery thread can be pressed between the thread feeding wheel 3.2 and the thread pressing wheel 3.3), and then passes through the corresponding embroidery needle.

[0093] The specific operation of the telescopic clutch thread feeding system of this embodiment is as follows (among the embroidery needles on the same needle bar frame 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 on the head of the embroidery machine as an example.

[0094] When the needle bar frame is translated to make the embroidery needle in the working position, the translation drive device drives the thread pressing translation mechanism 2 to move synchronously with the needle bar frame, so that the thread pressing translation mechanism 2 is translated to the sliding member 3.4 corresponding to the embroidery needle;

[0095] Next, the thread pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate. Specifically, during the extension of the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the thread pressing translation mechanism 2, the telescopic rod 2.1 drives the sliding member 3.4 to slide, so that the thread pressing wheel 3.3 is pressed tightly against the surface of the thread feeding wheel 3.2; or the driving motor drives the eccentric wheel to rotate forward, and the eccentric wheel abuts against the sliding member 3.4, thereby driving the sliding member 3.4 to move, so that the corresponding thread pressing wheel 3.3 is pressed tightly against the surface of the thread feeding wheel 3.2; thereby, the embroidery thread corresponding to the embroidery needle is pressed tightly between the thread feeding wheel 3.2 and the thread pressing wheel 3.3;

[0096] Next, the thread feeding drive mechanism 1 drives the thread feeding wheel 3.2 to rotate, actively outputs the embroidery thread, and the rotation angle of the thread feeding wheel 3.2 is used to control the length of the embroidery thread output each time, and the length of the embroidery thread output once is consistent with a corresponding stitch length in the embroidery process; in this way, the active thread feeding method is adopted, and embroidery thread with a length consistent with the stitch length is actively provided 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 guarantee the quality of the embroidery, which are caused by the embroidery machine using a thread presser to manually adjust the tightness of the embroidery thread in the prior art.

[0097] When the embroidery needle stops working, the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the thread pressing translation mechanism 2 shrinks, or the driving motor drives the eccentric wheel to rotate in the opposite direction, and the sliding member 3.4 moves under the action of the elastic element 3.6 to separate the thread pressing wheel 3.3 from the thread feeding wheel 3.2. Thereafter, during the process of the thread feeding drive mechanism 1 driving the thread feeding wheel 3.2 to rotate, the embroidery thread corresponding to the thread pressing wheel 3.3 is not output (the thread pressing wheel 3.3 is separated from the thread feeding wheel 3.2, and the embroidery thread between them will not be output by the rotating thread feeding wheel 3.2). The remaining sliding members 3.4 except for the one sliding member 3.4 corresponding to the thread pressing translation mechanism 2 will all move under the action of the corresponding elastic element 3.6 to separate the corresponding thread pressing wheel 3.3 from the thread feeding wheel 3.2.

[0098] The telescopic clutch 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.

[0099] On the other hand, a row of embroidery needles are generally arranged on the needle bar frame of the existing embroidery machine. The embroidery machine drives the needle bar frame to translate through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to embroidery threads of different colors); and the present scheme drives the thread pressing translation mechanism 2 to move synchronously with the needle bar frame through the translation driving device, so that the thread pressing translation mechanism 2 corresponds to each sliding member 3.4 in turn; based on this, when any embroidery needle in each head of the embroidery machine translates and changes color, the translation driving device drives the thread pressing translation mechanism 2 to move synchronously with the needle bar frame, so that the thread pressing translation mechanism 2 corresponds to the sliding member 3.4 corresponding to the embroidery needle; then, the thread pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate, so that the corresponding thread pressing wheel 3.3 is pressed on the surface of the thread feeding wheel 3.2, thereby pressing the embroidery thread corresponding to the embroidery needle between the thread feeding wheel 3.2 and the thread pressing wheel 3.3; then, the thread feeding drive mechanism 1 drives the thread feeding wheel 3.2 to rotate, and actively outputs the embroidery thread. Therefore, the wire feeding unit 3 of the present solution only needs one wire pressing translation mechanism 2, and there is no need for each sliding member 3.4 to correspond to a wire pressing translation mechanism 2, which can effectively reduce the number of wire pressing translation mechanisms 2, thereby reducing the manufacturing cost.

[0100] Further, such as Figure 1 , Figure 2 As shown, abutment portion 3.5 is provided on the sliding member 3.4. The wire pressing translation mechanism 2 drives the sliding member 3.4 to translate through the abutment portion 3.5. Specifically, during the extension of the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the wire pressing translation mechanism 2, the telescopic rod 2.1 abuts against the abutment portion 3.5, thereby driving the sliding member 3.4 to slide, so that the wire pressing wheel 3.3 is pressed against the surface of the wire feeding wheel 3.2; or the driving motor drives the eccentric wheel to rotate forward, and the eccentric wheel abuts against the abutment portion 3.5, thereby driving the sliding member 3.4 to move, so that the corresponding wire pressing wheel 3.3 is pressed against the surface of the wire feeding wheel 3.2.

[0101] Further, such as Figure 1 , Figure 2 As shown, the crimping wheel 3.3 is arranged at one end of the sliding member 3.4, and the other end of the sliding member 3.4 extends downward or upward to form the abutment portion 3.5. In this embodiment, the other end of the sliding member 3.4 extends downward to form the abutment portion 3.5.

[0102] The wire pressing translation mechanism 2 and the wire pressing wheel 3.3 are located on opposite sides of the wire feeding wheel 3.2, and the wire pressing translation mechanism 2 and the wire feeding wheel 3.2 are located on the same side of the abutment portion 3.5. This is conducive to the arrangement of the wire pressing translation mechanism 2, the wire pressing wheel 3.3 and the wire pressing translation mechanism 2.

[0103] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2, and the difference is that:

[0104] like Figure 2 , Figure 3 As shown, a telescopic clutch wire feeding system also includes an elastic abutment element 4. The wire pressing translation mechanism 2 drives a corresponding sliding member 3.4 to translate through the elastic abutment element 4, so that the wire pressing wheel 3.3 on the corresponding sliding member 3.4 is pressed against the surface of the wire feeding wheel 3.2. The elastic abutment element 4 includes an abutment member 4.1 that can be abutted and connected with the sliding member 3.4 and an elastic supporting element 4.0 that supports the abutment member 4.1. In this way, in the process that the wire pressing translation mechanism 2 drives the sliding member 3.4 to move through the elastic abutment element 4 so that the wire pressing wheel 3.3 is pressed against the wire feeding wheel 3.2, the elastic deformation of the elastic supporting element 4.0 can be used to make up for the gap between the sliding member 3.4 and the wire pressing wheel 3.3 that is loosened due to manufacturing errors or long-term use, so that the wire pressing wheel 3.3 can be stably and reliably pressed against the wire feeding wheel 3.2, thereby ensuring the stability of wire feeding.

[0105] In this embodiment, the wire pressing translation mechanism 2 is an air cylinder or an oil cylinder or an electric cylinder or an electric push rod or a push-pull electromagnet. One end of the telescopic rod 2.1 of the air cylinder or oil cylinder or electric cylinder or electric push rod or push-pull electromagnet constituting the wire pressing translation mechanism 2 faces the abutment portion 3.5 of the sliding member. One end of the telescopic rod 2.1 is provided with a guide hole 4.3. The guide hole 4.3 extends axially along the telescopic rod 2.1. The abutment 4.1 is slidably arranged in the guide hole 4.3, and one end of the abutment 4.1 extends outward from the guide hole 4.3, and the elastic support element 4.0 is located between the bottom surface of the guide hole 4.3 and the abutment 4.1. The elastic support element 4.0 is a spring or an elastic sheet, and the spring can be a tension spring or a compression spring. In this embodiment, the elastic support element 4.0 is a compression spring. The elastic support element 4.0 is located between the bottom surface of the guide hole 4.3 and the abutment 4.1. During the extension of the telescopic rod 2.1 of the air cylinder, oil cylinder, electric cylinder, electric push rod or push-pull electromagnet constituting the wire pressing translation mechanism 2, the abutment member 4.1 abuts against the abutment portion 3.5, driving a corresponding sliding member 3.4 to translate, so that the wire pressing wheel 3.3 on the corresponding sliding member 3.4 is pressed tightly against the surface of the wire feeding wheel 3.2.

[0106] Further, such as Figure 3As shown, one end of the telescopic rod 2.1 is provided with a detachably connected guide sleeve 4.2. In this embodiment, the guide sleeve 4.2 is connected to the end of the telescopic rod 2.1 by threading. Of course, the guide sleeve 4.2 can also be fixed to the end of the telescopic rod 2.1 by bolt locking. The guide sleeve 4.2 is coaxial or parallel to the telescopic rod 2.1. The inner hole of the guide sleeve 4.2 constitutes the guide hole 4.3. The end face of the telescopic rod 2.1 constitutes the bottom surface of the guide hole 4.3. In this way, before the guide sleeve 4.2 is installed on the telescopic rod 2.1, the elastic abutment element 4 can be first installed in the guide sleeve 4.2, and then the guide sleeve 4.2 is installed on one end of the telescopic rod 2.1, thereby realizing the installation of the elastic abutment element 4, and then facilitating the installation and replacement of the elastic abutment element 4.

[0107] A stopper 4.4 is provided on the inner wall of the guide hole 4.3, and a limit block 4.5 cooperating with the stopper is provided on the abutment member 4.1, and the limit block abuts against the stopper under the action of the elastic support element 4.0. In this embodiment, the abutment member 4.1 is an abutment rod, the stopper is located at one end of the guide sleeve 4.2 away from the telescopic rod 2.1, the limit block is provided at one end of the abutment rod, and the other end of the abutment rod extends out of the guide hole 4.3.

[0108] 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:

[0109] There are multiple wire feeding units 3. The wire feeding wheels 3.2 of each wire feeding unit 3 are coaxially distributed. The rotating shafts of the wire feeding wheels 3.2 of each wire feeding unit 3 are connected as one. Each wire feeding unit 3 shares a wire feeding drive mechanism 1. In this way, only one wire feeding drive mechanism 1 is needed to drive the wire feeding wheels 3.2 of each wire feeding unit 3 to rotate synchronously, which can effectively reduce the number of wire feeding drive mechanisms 1 and further reduce the manufacturing cost.

[0110] 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:

[0111] There are multiple wire feeding units 3. The wire feeding drive mechanism 1 corresponds to the wire feeding unit 3 one by one. The wire feeding wheel 3.2 of the corresponding wire feeding unit 3 is driven to rotate. In this way, the independent layout application of each wire feeding unit 3 and the wire feeding drive mechanism 1 is convenient.

[0112] Specific embodiment 6, an embroidery machine, including a telescopic clutch thread feeding system. The specific structure of the telescopic clutch thread feeding system refers to any one of the specific embodiments of specific embodiment 1 to specific embodiment 5.

[0113] 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 telescopic clutch thread feeding system, applied to an embroidery machine, the embroidery machine comprises a frame and a needle bar frame, characterized in that: It includes a wire feeding unit, a wire feeding driving mechanism and a wire pressing translation mechanism. The wire feeding unit includes: Wire feeding bracket; A wire feeding wheel is rotatably arranged on the wire feeding bracket, and a wire feeding driving mechanism drives the wire feeding wheel to rotate; A plurality of sliding members distributed in sequence, each sliding member being slidably arranged on the wire feeding bracket, and a wire pressing wheel cooperating with the wire feeding wheel being arranged on the sliding member; One of the wire feeding bracket and the wire pressing translation mechanism is fixed, and the other moves synchronously with the needle bar bracket, so that the wire pressing translation mechanism corresponds to each sliding member in turn, and the wire pressing translation mechanism drives a corresponding sliding member to translate, so that the wire pressing wheel on the corresponding sliding member 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. A telescopic clutch wire feeding system according to claim 1, characterized in that: The wire pressing translation mechanism is fixed on the frame, and the wire feeding bracket is fixed on the needle bar bracket, so that the wire feeding bracket and the needle bar bracket move synchronously.

3. The telescopic clutch wire feeding system according to claim 1, characterized in that: It also includes a translation drive device, the wire pressing translation mechanism is fixed on the frame, the wire feeding bracket is slidably arranged on the frame, the sliding direction of the wire feeding bracket is parallel to the moving direction of the needle bar frame, and the translation drive device drives the wire feeding bracket and the needle bar frame to move synchronously.

4. The telescopic clutch wire feeding system according to claim 1, characterized in that: It also includes a translation drive device, the wire feeding bracket is fixed on the frame, the wire pressing translation mechanism is slidably arranged on the frame, and the translation drive device drives the wire pressing translation mechanism and the needle bar frame to move synchronously.

5. A telescopic clutch wire feeding system according to any one of claims 1 to 4, characterized in that: The wire feeding unit further comprises an elastic element corresponding to the sliding member, and the elastic element provides elastic force to drive the corresponding sliding member to move so as to separate the wire pressing wheel from the wire feeding wheel.

6. A telescopic clutch wire feeding system according to any one of claims 1 to 4, characterized in that: The sliding member is provided with an abutment portion, and the wire pressing translation mechanism drives the sliding member to translate via the abutment portion.

7. A telescopic clutch wire feeding system according to claim 6, characterized in that: The crimping wheel is arranged at one end of the sliding member, and the other end of the sliding member extends downward or upward to form the abutting portion.

8. A telescopic clutch wire feeding system according to any one of claims 1 to 4, characterized in that: It also includes an elastic abutment element. The wire pressing translation mechanism translates a sliding member corresponding to the elastic abutment element so that the wire pressing wheel on the corresponding sliding member is pressed tightly against the surface of the wire feeding wheel. The elastic abutment element includes an abutment member that can be abutted and connected to the sliding member and an elastic supporting element that supports the abutment member.

9. The telescopic clutch wire feeding system according to claim 8, characterized in that: The wire pressing translation mechanism is an air cylinder, an oil cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet. A guide hole is provided at one end of the telescopic rod of the air cylinder, an oil cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet constituting the wire pressing translation mechanism. The guide hole extends axially along the telescopic rod. The abutment is slidably arranged in the guide hole, and the elastic support element is located between the bottom surface of the guide hole and the abutment.

10. A telescopic clutch wire feeding system according to claim 9, characterized in that: One end of the telescopic rod is provided with a detachably connected guide sleeve, which is coaxial or parallel to the telescopic rod. The inner hole of the guide sleeve constitutes the guide hole, and the end surface of the telescopic rod constitutes the bottom surface of the guide hole. A stopper is provided on the inner wall of the guide hole, and a limiting block cooperating with the stopper is provided on the abutment. The limiting block abuts against the stopper under the action of the elastic supporting element.

11. A telescopic clutch wire feeding system according to any one of claims 1 to 4, characterized in that: The wire pressing translation mechanism is an air cylinder, an oil cylinder, an electric cylinder, an electric push rod, or a push-pull electromagnet.

12. A telescopic clutch wire feeding system according to any one of claims 1 to 4, characterized in that: The wire pressing translation mechanism comprises an eccentric wheel which can be abutted and connected with the sliding member and a driving motor which drives the eccentric wheel to rotate.

13. A telescopic clutch wire feeding system according to any one of claims 1 to 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 wire feeding driving mechanism.

14. A telescopic clutch wire feeding system according to any one of claims 1 to 4, characterized in that: There are multiple wire feeding units, and the wire feeding 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 telescopic clutch wire feeding system comprising any one of claims 1-14.

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