Thread passing device of embroidery machine

Abstract

The utility model discloses a thread passing device of an embroidery machine, which solves the problems of long threading time and high threading difficulty of embroidery threads of the existing embroidery machine. The thread passing device of the embroidery machine comprises a needle bar frame and a middle thread passing assembly installed on the needle bar frame, the middle thread passing assembly comprises a thread divider and a rolling assembly, the rolling assembly is rotatably arranged in the thread divider, a plurality of thread passing holes are formed in the upper side of the thread divider, and a plurality of thread passing holes are formed in the upper side of the rolling assembly. The rolling assembly is arranged below the position between every two adjacent thread passing holes, thread passing grooves communicated with the thread passing holes are formed in the front side of the deconcentrator, and embroidery threads penetrate into the thread passing holes from the thread passing grooves and bypass the rolling assembly. According to the threading device of the embroidery machine, threading can be completed only by sleeving the two ends of an embroidery thread into the threading grooves in the two sides of the rolling assembly and tensioning the two ends of the embroidery thread, the difficulty of threading the embroidery thread is greatly reduced, and the operation time is saved.

Description

Technical Field

[0001] The utility model relates to the field of embroidery machines, in particular to a thread passing device of an embroidery machine. Background Art

[0002] Existing embroidery machines are usually equipped with multiple needle bars. When threading, the thread on each needle bar must pass through the first thread passing hole and the second thread passing hole of the middle thread passing device to put the thread on the roller assembly, and then pass through the thread take-up rod hole, resulting in the threading work taking up a lot of time; at the same time, the process of passing the thread through the holes is not convenient to operate, and the threading work is difficult to operate. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and propose an embroidery machine thread passing device to solve the problems of long threading time and great threading difficulty of the prior embroidery machine embroidery thread.

[0004] In order to achieve the above technical objectives, the utility model proposes an embroidery machine thread passing device, including a needle bar frame and a middle thread passing assembly installed on the needle bar frame, the middle thread passing assembly includes a wire divider and a rolling assembly, the rolling assembly is rotatably placed in the wire divider, a plurality of wire passing holes are provided on the upper side of the wire divider, the rolling assembly is arranged below between two adjacent wire passing holes, a wire passing groove connected to the wire passing holes is provided on the front side of the wire divider, the embroidery thread passes through the wire passing groove into the wire passing hole and bypasses the rolling assembly.

[0005] Preferably, the wire divider includes a rear plate, a plurality of connecting plates and a plurality of front baffles, the rear plate, the connecting plates and the front baffles are integrally formed, the connecting plates connect the front baffles and the rear plate, the wire passing groove is formed between two adjacent front baffles, and the rear plate is fixed on the needle bar rack.

[0006] Preferably, the horizontal projection of the connecting plate falls within the horizontal projection range of the rolling assembly.

[0007] Preferably, the rolling assembly includes a rolling seat and a rolling column, the rolling seat is limited between the rear plate and the needle bar frame, one end of the rolling column is rotatably limited in the rolling seat, and the other end is rotatably located on the front baffle.

[0008] Preferably, the rolling components are provided in a plurality of groups, each group of the rolling components comprises a plurality of rolling cylinders, and the plurality of rolling cylinders are arranged horizontally.

[0009] Preferably, the center thread passing assembly also includes an elastic limiter arranged below the rolling assembly, the fixed end of the elastic limiter is mounted on the wire divider, a front baffle is provided on the front side of the wire divider, and a thread passing gap for the embroidery thread to pass through is formed between the free end of the elastic limiter and the front baffle, or the elastic deformation of the elastic limiter forms a thread passing gap between the free end of the elastic member and the front baffle.

[0010] Preferably, a plug-in slot is provided on the rear side of the splitter, and the plug-in slot includes a guide end and a limit end, and the fixed end includes a plug-in part, the guide end guides the plug-in part into the plug-in slot, and the limit end limits the plug-in part so that the plug-in part is clamped in the plug-in slot.

[0011] Preferably, a sliding groove is provided on the wall of the front baffle plate on the side facing the elastic limiting member, and at least a part of the free end is placed in the sliding groove.

[0012] Preferably, the elastic limiting member further includes a connecting end connected between the fixed end and the free end, and the free end is formed by extending upward from the connecting end.

[0013] Preferably, the free end comprises a guide portion and a non-return portion, wherein the guide portion is formed by obliquely extending upward from the connecting end, and the non-return portion is formed by extending upward from the guide portion.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects.

[0015] 1. The utility model proposes a thread-passing device for an embroidery machine, comprising a needle bar frame and a middle thread-passing assembly mounted on the needle bar frame, wherein the middle thread-passing assembly comprises a wire divider and a rolling assembly, wherein the rolling assembly is rotatably placed in the wire divider, wherein the upper side of the wire divider is provided with a plurality of thread-passing holes, wherein the rolling assembly is arranged below two adjacent thread-passing holes, wherein the front side of the wire divider is provided with a thread-passing groove connected to the thread-passing holes, wherein the embroidery thread passes through the thread-passing groove into the thread-passing holes and bypasses the rolling assembly. With such a configuration, when threading the embroidery machine, the embroidery thread does not need to be pierced for many times, and only needs to be inserted into the thread-passing grooves on both sides of the rolling assembly and then tightened to complete the threading of the embroidery thread on the middle thread-passing assembly, thereby greatly reducing the difficulty of threading the embroidery thread and saving operation time.

[0016] 2. The wire divider includes a rear plate, a plurality of connecting plates and a plurality of front baffles. The rear plate, the connecting plate and the front baffle are formed in one piece. The connecting plate connects the front baffle and the rear plate. A wire groove is formed between two adjacent front baffles. The rear plate is fixed on the needle bar frame. Since the embroidery thread is not always in a taut state during the operation of the embroidery machine, when the embroidery thread is in a relaxed state, external interference factors may cause the embroidery thread to shake. When there is no front baffle, the embroidery thread may be separated from the middle wire passing assembly from the front of the rolling assembly due to external interference factors. Therefore, by setting a front baffle in front of the wire divider, the probability of the embroidery thread being separated from the middle wire passing assembly in a relaxed state can be reduced, and the probability of the embroidery thread remaining in the working position when the embroidery machine is working can be increased.

[0017] 3. The horizontal projection of the connecting plate falls within the horizontal projection range of the rolling assembly. By reducing the size of the connecting plate and avoiding direct contact between the embroidery thread and the connecting plate, the friction of the embroidery thread is reduced on the one hand, and the probability of the embroidery thread breaking during use can be avoided on the other hand.

[0018] 4. The rolling assembly includes a rolling seat and a rolling column. The rolling seat is limited between the rear plate and the needle bar frame. One end of the rolling column is rotatably limited in the rolling seat, and the other end is rotatably located on the front baffle. With this arrangement, on the one hand, both ends of the rolling column can be rotatably limited on the wire divider, so that the rotation of the rolling column is more stable, and the movement of the embroidery thread is also more stable; on the other hand, the rolling seat is fixed in this way, which can provide good support for the rolling column on one side of the rear plate, further improving the stability of the rolling column rotation.

[0019] 5. There are multiple groups of rolling components, each group of rolling components includes multiple rolling cylinders, and the multiple rolling cylinders are arranged horizontally. With such a configuration, the use of multiple rolling cylinders reduces the size of the rolling components in the vertical direction. On the one hand, when the embroidery thread moves, the contact area between the embroidery thread and the rolling components is reduced, thereby reducing the friction of the embroidery thread; on the other hand, under the same width, the total volume of multiple rolling cylinders is reduced relative to that of a single rolling cylinder, thereby reducing the amount of material used.

[0020] 6. The middle thread passing assembly also includes an elastic stopper disposed below the rolling assembly, the fixed end of the elastic stopper is mounted on the wire divider, a front baffle is disposed on the front side of the wire divider, and a thread passing gap is formed between the free end of the elastic stopper and the front baffle, or between the free end of the elastic stopper and the front baffle due to elastic deformation, for the embroidery thread to pass through. By disposing the elastic stopper below the rolling assembly, when the embroidery thread is in a relaxed state, at least part of the embroidery thread will hang on the elastic assembly, and the elastic stopper can be configured so that its height is higher than the lowest height of the front baffle, thereby making it more difficult for the embroidery thread to escape from the middle thread passing assembly; at the same time, the free end and the front baffle can form a thread passing gap for the embroidery thread to pass through, so that the elastic stopper will not affect the threading of the embroidery thread.

[0021] 7. A plug-in slot is provided on the rear side of the wire splitter, and the plug-in slot includes a guide end and a limit end, and the fixed end includes a plug-in portion. The guide end guides the plug-in portion to enter the plug-in slot, and the limit end limits the plug-in portion so that the plug-in portion is clamped in the plug-in slot. With such a configuration, the elastic limiter can be installed after the wire splitter is fixed on the needle bar frame. Compared with the solution in which the elastic limiter needs to be installed on the needle bar frame at the same time as the wire splitter, the installation of the elastic limiter is simpler, especially for the middle wire passing assembly with multiple elastic limiters. The operator only needs to install the wire splitter first, and then install the elastic limiter. There is no need to clamp the elastic limiter on the wire splitter and the needle bar frame while installing the wire splitter. At the same time, the elastic limiter does not need to be fixed on the wire splitter first. After the wire splitter is installed in place, the installation of the elastic limiter can be completed by inserting them into the plug-in slot one by one, thereby reducing the difficulty of installing the middle wire passing assembly.

[0022] 8. A slide groove is provided on the wall of the front baffle facing the elastic limiter, and at least part of the free end is placed in the slide groove. With such a configuration, the elastic limiter can be set longer, so as to better limit the embroidery thread during the process of the embroidery thread loosening and falling. At the same time, the drop between the wall on the back of the free end and the wall on the side of the front baffle facing the elastic limiter can be configured to be small or non-existent, so that when the embroidery thread transitions from a tight state to a relaxed state, it is difficult for the embroidery thread to enter the gap between the front baffle and the elastic limiter, thereby effectively preventing the embroidery thread from detaching from the elastic limiter.

[0023] 9. The elastic limiter also includes a connecting end connected between the fixed end and the free end, and the free end is formed by the upward extension of the connecting end. In this way, due to the upward extension of the free end, the embroidery thread is less likely to detach from the elastic limiter during the process of loosening and hanging down; at the same time, when the embroidery thread is hung on the elastic limiter, it is also less likely to detach from the middle thread assembly due to external interference factors.

[0024] 10. The free end includes a guide portion and a non-return portion, wherein the guide portion is formed by the connecting end extending upwardly in an inclined manner, and the non-return portion is formed by the guide portion extending upwardly. With such a configuration, the guide portion makes it easier for the embroidery thread to pass through the middle thread assembly, and the non-return portion can further prevent the embroidery thread from detaching from the elastic limiter when in a relaxed state.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the thread-passing device of an embroidery machine in an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of a wire passing assembly in an embodiment of the utility model;

[0028] Figure 3An exploded view of the wire passing assembly in the embodiment of the utility model;

[0029] Figure 4 A schematic diagram of a line splitter in an embodiment of the utility model;

[0030] Figure 5 An exploded view of a rolling assembly in an embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of an elastic limiting member in an embodiment of the utility model;

[0032] Figure 7 It is a partial schematic diagram of the wire passing assembly in the embodiment of the utility model;

[0033] Figure 8 A partial cross-sectional view of a wire-passing assembly in an embodiment of the utility model;

[0034] Reference numerals:

[0035] 100. Needle bar rack;

[0036] 200, middle wire passing assembly, 210, wire divider, 211, front baffle, 2111, slide groove, 2112, second rolling groove, 212, connecting plate, 213, rear plate, 2131, positioning groove, 214, wire passing hole, 215, wire passing groove, 220, rolling assembly, 221, rolling seat, 2211, first rolling groove, 222, rolling column, 223, rolling core, 230, elastic limiting member, 231, fixed end, 2311, plug-in portion, 232, connecting end, 233, free end, 2331, guide portion, 2332, non-return portion, 240 plug-in groove, 241, guide end, 242, limiting end, 250, wire passing seat;

[0037] 300, online components;

[0038] 400, thread take-up lever, 401, thread take-up hole;

[0039] 500. Embroidery thread. DETAILED DESCRIPTION

[0040] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more, unless otherwise clearly defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Embodiment 1:

[0045] like Figures 1 to 7 As shown, an embroidery machine thread passing device proposed in the embodiment of the utility model comprises a needle bar frame 100 and a middle thread passing assembly 200, the middle thread passing assembly 200 is mounted on the needle bar frame 100, the middle thread passing assembly 200 comprises a wire separator 210 and a rolling assembly 220, the rolling assembly 220 is rotatably placed in the wire separator 210, a plurality of wire passing holes 214 are arranged on the upper side of the wire separator 210, and the rolling assembly 200 is arranged below between two adjacent wire passing holes 214. The two wire passing holes 214 are respectively used for the entry and exit of the embroidery thread.

[0046] A thread groove 215 is provided on the front side of the wire divider 210, and the thread groove 215 is connected to the thread hole 214. The incoming and outgoing threads of the embroidery thread 500 are respectively passed through different thread holes 214 through different thread grooves 215 so that the embroidery thread 500 bypasses the rolling assembly 220. When threading, the embroidery thread 500 only needs to leave enough length, and the incoming and outgoing threads of the embroidery thread 500 are respectively passed through the two thread grooves 215 into the thread holes 214 on both sides of the rolling assembly 200, and the embroidery thread 500 is tightened, so that the embroidery thread 500 bypasses the rolling assembly 220.

[0047] With such arrangement, the embroidery thread 500 does not need to be pierced multiple times when threading the embroidery machine. It only needs to be inserted into the thread grooves on both sides of the rolling assembly 220 and tightened to complete the threading of the embroidery thread 500 on the middle thread assembly 200, which greatly reduces the difficulty of threading the embroidery thread 500 and saves operation time.

[0048] The thread passing device of the embroidery machine further includes an upper thread passing assembly 300 and a thread take-up rod 400. The embroidery thread 500 passes through the upper thread passing assembly 300, passes around the rolling assembly 220 of the middle thread passing assembly 200, passes upward through the thread take-up hole 401 on the thread take-up rod 400, and then passes downward through the embroidery needle (not shown) below. The thread take-up rod 400 moves up and down when the embroidery machine is working, and is used for supplying and collecting the embroidery thread 500, and maintaining the embroidery thread 500 with appropriate tension and stability during the embroidery process.

[0049] In a preferred embodiment, the wire divider 210 includes a rear plate 213, a plurality of connecting plates 212 and a plurality of front baffles 211, wherein the connecting plates 212 connect the front baffles 211 and the rear plate 213, and a wire groove 215 is formed between two adjacent front baffles 211, and the rear plate 213 is fixed to the needle bar frame 100. The rear plate 213, the plurality of connecting plates 212 and the plurality of front baffles 21 are integrally formed, and the rear plate 213, the connecting plates 212 and the front baffles 211 are integrally arranged to improve the integrity of the wire divider 210, avoid gaps between the rear plate 213, the connecting plates 212 and the front baffles 211, and thus avoid the embroidery thread 500 from getting stuck in the gaps during operation. Accordingly, the connecting plate 212 needs to have sufficient thickness to reduce the shaking of the front baffle 211.

[0050] The rear plate 213, the connecting plate 212 and the front baffle plate 211 can be integrally formed by injection molding, or integrally formed by machining a whole piece of material.

[0051] Since the embroidery thread 500 is not always in a taut state during the operation of the embroidery machine, when the embroidery thread 500 is in a relaxed state, external interference factors may cause the embroidery thread 500 to shake. When there is no front baffle 211, the embroidery thread 500 may be separated from the middle thread assembly 200 from the front of the rolling assembly 220 due to external interference factors.

[0052] Among them, the external interference factors may be the wind in the environment; it may also be that the thread take-up rod 400 drives the embroidery thread 500 to move up and down, causing the embroidery thread 500 to shake; it may also be the vibration of the machine, the operator's misoperation, the contact and entanglement between adjacent embroidery threads 500, etc.; it may also be some other unexpected interference factors.

[0053] Therefore, by providing a front baffle 211 in front of the wire divider 210, the probability of the embroidery thread 500 escaping from the middle thread assembly 200 in a relaxed state can be reduced, thereby increasing the probability of the embroidery thread 500 remaining in the working position when the embroidery machine is working.

[0054] More preferably in this embodiment, the horizontal projection of the connecting plate 212 falls within the horizontal projection range of the rolling assembly 220 .

[0055] When the embroidery thread 500 is tightened, if the width of the connecting plate 212 is large, the embroidery thread 500 will directly rub against the connecting plate 212, which will increase the friction of the embroidery thread 500 on the one hand; on the other hand, since the connecting plate 212 is fixed and does not move, the friction between the embroidery thread 500 and the connecting plate 212 will easily cause the embroidery thread 500 to break.

[0056] By reducing the size of the connecting plate 212 and avoiding direct contact between the embroidery thread 500 and the connecting plate 212, the friction of the embroidery thread 500 is reduced on the one hand, and the probability of the embroidery thread 500 breaking during use can be avoided on the other hand.

[0057] In another more preferred embodiment, the rolling assembly 220 includes a rolling seat 221 and a rolling column 222. The rolling seat 221 is limited between the rear plate 213 and the needle bar frame 100. One end of the rolling column 222 is rotatably limited in the rolling seat 221, and the other end is rotatably limited on the front baffle 211.

[0058] With such arrangement, on the one hand, both ends of the rolling column 222 can be rotatably limited on the wire divider 210, so that the rotation of the rolling column 222 is more stable, and the movement of the embroidery thread 500 is also more stable; on the other hand, the rolling seat 221 is fixed in this way, which can provide good support for the rolling column 222 on one side of the rear plate 213, further improving the stability of the rotation of the rolling column 222.

[0059] In this embodiment, a positioning groove 2131 is provided on the side of the rear plate 213 facing the needle bar frame 100, and the wire divider 210 also includes a wire passing seat 250 arranged behind the rear plate 213, and a cavity for the positioning rolling seat 221 is formed between the rear plate 213 and the wire passing seat 250.

[0060] In some other embodiments, a portion of the positioning groove 2131 may be disposed on the rear plate 213 , and another portion may be disposed on the wire passing seat 250 , and the two may be fixedly connected to form a cavity of the positioning rolling seat 221 .

[0061] In some other embodiments, the positioning groove 2131 may also be disposed on the wire passing seat 250 .

[0062] In this embodiment, the rolling column 222 is hollow, and the rolling assembly 220 further includes a rolling core 223, which is mounted on the rolling seat 221. The rolling seat 221 is provided with a first rolling groove 2211, and the rolling column 222 is rotatably sleeved on the rolling core 223, and at least part of the rolling column 222 is limited in the first rolling groove 2211.

[0063] In this embodiment, a second rolling groove 2112 is provided on the front baffle plate 211 , and one end of the rolling post 222 is rotatably limited in the second rolling groove 2112 .

[0064] In a preferred embodiment, the rolling assembly 220 is provided with multiple groups, each group of the rolling assembly 220 includes multiple rolling cylinders 222, and the multiple rolling cylinders 222 are arranged horizontally. The use of multiple rolling cylinders 222 reduces the size of the rolling assembly 220 in the vertical direction. On the one hand, when the embroidery thread 500 moves, the contact area between the embroidery thread 500 and the rolling assembly 220 is reduced, thereby reducing the friction of the embroidery thread 500; on the other hand, under the same width, the total volume of multiple rolling cylinders 222 is reduced relative to a single rolling cylinder 222, thereby reducing the amount of material used.

[0065] Embodiment 2:

[0066] Based on Example 1, Figures 1 to 8 As shown, in the present embodiment, the center thread passing assembly 200 also includes an elastic limiter 230 disposed below the rolling assembly 220, a fixed end 231 of the elastic limiter 230 is mounted on the wire divider 210, and a thread passing gap is formed between the free end 233 of the elastic limiter 230 and the front baffle 211 for the embroidery thread to pass through.

[0067] In some other embodiments, the free end 233 abuts against the front baffle 211, and the elastic stopper 230 is elastically deformed to form a thread gap between the free end 233 and the front baffle 211. By pulling the embroidery thread 500 to deform the elastic stopper 230, the embroidery thread 500 passes through the thread gap into the middle thread assembly 200.

[0068] The movement of the thread take-up rod 400 will make the embroidery thread 500 in a taut or loose state. The downward movement of the thread take-up rod 400 makes the embroidery thread 500 in a loose state. The embroidery thread 500 in the middle thread assembly 200 will have a large surplus, and a large gap will be generated between the bottom end of the embroidery thread 500 and the rolling assembly 220. The embroidery thread 500 may be blown out of the middle thread assembly 200 due to external interference factors.

[0069] By setting an elastic limiter 230 under the rolling assembly 220, when the embroidery thread 500 is in a relaxed state, at least part of the embroidery thread 500 will be hung on the elastic assembly, and the elastic limiter 230 can be configured so that its height is higher than the lowest height of the front baffle 211, so that it is more difficult for the embroidery thread 500 to escape from the middle thread passing assembly 200; at the same time, a thread passing gap can be formed between the free end 233 and the front baffle 211, and the embroidery thread 500 can enter the middle thread passing assembly 200 through the thread passing gap, so that the elastic limiter 230 will not affect the threading of the embroidery thread.

[0070] In this embodiment, the elastic limiting member 230 is made of a spring sheet.

[0071] In some other embodiments, the elastic limiting member 230 may also be made of other elastic materials, such as plastic.

[0072] In a preferred embodiment, a plug-in slot 240 is provided on the rear side of the splitter 210, and the plug-in slot 240 includes a guide end 241 and a limit end 242. The elastic limit member 230 includes a plug-in portion 2311, and the guide end 241 guides the plug-in portion 2311 to enter the plug-in slot 240, and the limit end 242 limits the plug-in portion 2311 so that the plug-in portion 2311 is clamped in the plug-in slot 240.

[0073] The wire distributor 210 further includes a wire passing seat 250, which is disposed on the rear side of the rear plate 213. The rear plate 213 is provided with a plug-in slot 240. The rear plate 213 is fixedly connected to the needle bar frame 100 by screws and the wire passing seat 250 is pressed between the two.

[0074] In some other embodiments, the plug-in slot 240 may also be disposed on the wire passing seat 250 .

[0075] In some other embodiments, a portion of the plug-in slot 240 is respectively provided on the rear plate 213 and the wire-passing seat 250 , and the two are fixedly connected to form a complete plug-in slot 240 .

[0076] With such arrangement, the elastic limit member 230 can be installed after the wire divider 210 is fixed on the needle bar frame 100. Compared with the solution in which the elastic limit member 230 needs to be installed on the needle bar frame 100 at the same time as the wire divider 210, the installation of the elastic limit member 230 is simpler, especially for the center line assembly 200 with multiple elastic limit members 230. The operator only needs to install the wire divider 210 first, and then install the elastic limit member 230. There is no need to clamp the elastic limit member 230 on the wire divider 210 and the needle bar frame 100 while installing the wire divider 210. At the same time, the elastic limit member 230 does not need to be fixed on the wire divider 210 first. After the wire divider 210 is installed in place, the elastic limit member 230 can be installed by inserting them into the plug-in slot one by one, thereby reducing the difficulty of installing the center line assembly 200.

[0077] In this embodiment, both ends of the limiting end 242 are wider than the guiding end 241, so that a step is formed between the limiting end 242 and the guiding end 241, and another step is correspondingly provided on the plug-in portion 2311, and the two steps are engaged with each other so that the plug-in portion 2311 is engaged in the plug-in slot 240. The plug-in portion 2311 is also provided with a deformation slot, and when the plug-in portion 2311 passes through the guiding end 241, the plug-in end is deformed toward the deformation slot to facilitate the insertion of the plug-in portion 2311.

[0078] In some other embodiments, the limiting end 242 includes a cavity provided on the rear plate 213 or the needle rod rack 100, a rigid sphere and a spring limited in the cavity, the spring is pre-stressed between the cavity and the rigid sphere so that part of the rigid sphere extends out of the cavity, and a groove matching the protruding part of the rigid sphere is provided on the plug-in portion 2311, and the plug-in portion 2311 is clamped in the plug-in slot 240 through the cooperation of the rigid sphere and the groove.

[0079] In a preferred embodiment, a sliding groove 2111 is formed on the wall of the front baffle 211 facing the elastic limiting member 230 , and at least a portion of the free end 233 is placed in the sliding groove 2111 .

[0080] With such arrangement, the elastic limiting member 230 can be arranged to be longer, thereby better limiting the embroidery thread 500 during the process of the embroidery thread 500 relaxing and hanging down, and at the same time, the height difference between the wall on the back side of the free end 233 and the wall on the side of the front baffle 211 facing the elastic limiting member 230 can be configured to be smaller or non-existent, so that when the embroidery thread 500 transitions from a taut state to a relaxed state, it is difficult for the embroidery thread 500 to enter the gap between the front baffle 211 and the elastic limiting member 230, thereby effectively preventing the embroidery thread 500 from detaching from the elastic limiting member 230.

[0081] In a preferred embodiment, the elastic limiting member 230 further includes a connecting end 232 connected between the fixed end 231 and the free end 233 , and the free end 233 is formed by extending the connecting end 232 upward.

[0082] With such arrangement, due to the upward extension of the free end 233, the embroidery thread 500 is less likely to detach from the elastic limiter 230 when it is relaxed and hanging down; at the same time, when the embroidery thread 500 is hung on the elastic limiter 230, it is also less likely to detach from the middle thread assembly 200 due to external interference factors.

[0083] The connection end 232 may be arranged horizontally or inclined.

[0084] In a more preferred embodiment, the free end 233 includes a guide portion 2331 and a non-return portion 2332 . The guide portion 2331 is formed by the connection end 232 extending obliquely upward, and the non-return portion 2332 is formed by the guide portion 2331 extending upward.

[0085] With such arrangement, the guide portion 2331 makes it easier for the embroidery thread 500 to pass through the center thread assembly 200 , and the non-return portion 2332 can further prevent the embroidery thread 500 from detaching from the elastic limiting member 230 in a relaxed state.

[0086] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. An embroidery machine thread passing device, comprising a needle bar frame and a middle thread passing assembly mounted on the needle bar frame, wherein the middle thread passing assembly comprises a thread divider and a rolling assembly, wherein the rolling assembly is rotatably placed in the thread divider, wherein the thread divider is provided with a plurality of thread passing holes on the upper side, and the rolling assembly is arranged below two adjacent thread passing holes, wherein: A thread passing groove connected to the thread passing hole is provided on the front side of the thread divider, and the embroidery thread passes through the thread passing groove into the thread passing hole and bypasses the rolling assembly.

2. The thread-passing device of an embroidery machine according to claim 1, characterized in that: The wire divider includes a rear plate, a plurality of connecting plates and a plurality of front baffles. The rear plate, the connecting plates and the front baffles are integrally formed. The connecting plates connect the front baffles and the rear plate. The wire passing groove is formed between two adjacent front baffles. The rear plate is fixed on the needle bar frame.

3. The thread-passing device of an embroidery machine as claimed in claim 2, characterized in that: The horizontal projection of the connecting plate falls within the horizontal projection range of the rolling assembly.

4. The thread-passing device of an embroidery machine according to claim 2, characterized in that: The rolling assembly includes a rolling seat and a rolling column. The rolling seat is limited between the rear plate and the needle bar frame. One end of the rolling column is rotatably limited in the rolling seat, and the other end is rotatably located on the front baffle.

5. The thread-passing device for an embroidery machine according to claim 1, characterized in that: The rolling components are provided in a plurality of groups, each group of the rolling components comprises a plurality of rolling cylinders, and the plurality of rolling cylinders are arranged horizontally.

6. The thread-passing device for an embroidery machine according to claim 1, characterized in that: The center thread passing assembly also includes an elastic limiter arranged below the rolling assembly, the fixed end of the elastic limiter is installed on the wire divider, a front baffle is provided on the front side of the wire divider, and a thread passing gap for the embroidery thread to pass through is formed between the free end of the elastic limiter and the front baffle, or the elastic deformation of the elastic limiter forms a thread passing gap between the free end of the elastic limiter and the front baffle.

7. The thread-passing device of an embroidery machine according to claim 6, characterized in that: A plug-in slot is provided on the rear side of the splitter, and the plug-in slot includes a guide end and a limit end. The fixed end includes a plug-in part. The guide end guides the plug-in part to enter the plug-in slot, and the limit end limits the plug-in part so that the plug-in part is clamped in the plug-in slot.

8. The thread-passing device of an embroidery machine according to claim 6, characterized in that: A sliding groove is provided on the wall of the front baffle plate on the side facing the elastic limiting member, and at least a part of the free end is placed in the sliding groove.

9. The thread-passing device for an embroidery machine as claimed in claim 6, characterized in that: The elastic limiting member further includes a connecting end connected between the fixed end and the free end, and the free end is formed by extending upward from the connecting end.

10. The thread-passing device of an embroidery machine according to claim 9, characterized in that: The free end includes a guide portion and a non-return portion. The guide portion is formed by the connecting end extending upwardly in an inclined manner, and the non-return portion is formed by the guide portion extending upwardly.

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