Knotting device and warp knotting machine

Abstract

The application discloses a knotting device and a warp knotting machine. The knotting device comprises a driving mechanism, a knotting mechanism driven to rotate by the driving mechanism, and a cam mechanism driven to rotate by the driving mechanism. The cam mechanism comprises a cam rotating shaft, the cam rotating shaft comprises a first sub-shaft, a second sub-shaft, and a clutch connecting the first sub-shaft and the second sub-shaft. The knotting mechanism has a single-knot mode and a double-knot mode. The clutch can separate the first sub-shaft from the second sub-shaft to enable the first sub-shaft and the second sub-shaft to rotate relatively, thereby switching between the single-knot mode and the double-knot mode, or the clutch can drive-connect the first sub-shaft and the second sub-shaft. The knotting device and the warp knotting machine can realize simple and quick switching between the single-knot mode and the double-knot mode.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a knotting device and a warp-tying machine. Background Technology

[0002] A warp knotting machine is an automated device that knots and connects nearly used yarn on a warp beam to yarn on a new warp beam. The use of warp knotting machines has replaced manual yarn knotting with automated warp knotting, greatly improving production efficiency and reducing labor costs.

[0003] Currently, changing a single knot to a double knot on a knitting machine requires replacing parts, which is cumbersome, time-consuming, and affects production efficiency. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a knotting device and a warp-tying machine, which can achieve simple and quick switching between single knot tying mode and double knot tying mode.

[0005] The present invention also proposes a knotting device, the knotting device comprising:

[0006] Drive mechanism;

[0007] A knotting mechanism, driven to rotate by the drive mechanism, includes a knotting tube, a clamp module, a yarn hook, and a yarn pusher. The clamp module, the yarn hook, and the yarn pusher are connected to the knotting tube and are all capable of sliding along the axial direction of the knotting tube.

[0008] A cam mechanism, driven to rotate by the drive mechanism, includes a cam shaft, a clamp module cam, a hook needle cam, and a push needle cam. The cam shaft includes a first sub-shaft, a second sub-shaft, and a clutch. The clamp module cam is located on the first sub-shaft and can rotate with the first sub-shaft, driving the clamp module to extend and retract axially along the knotting tube. The hook needle cam and the push needle cam are located on the second sub-shaft. The hook needle cam can rotate with the second sub-shaft and drive the hook needle to extend and retract axially along the knotting tube. The push needle cam can rotate with the second sub-shaft and drive the push needle to extend and retract axially along the knotting tube.

[0009] The knotting mechanism has a single knot mode and a double knot mode. The clutch can separate the first branch shaft from the second branch shaft so that the first branch shaft and the second branch shaft can rotate relative to each other, thereby switching between the single knot mode and the double knot mode, or making the first branch shaft and the second branch shaft drively connected.

[0010] The knotting device according to embodiments of the present invention has at least the following advantages: When switching from a single-knot mode to a double-knot mode, the first and second branch shafts can be separated by a clutch, and the phase difference between the first and second branch shafts can be adjusted to establish a driving connection between them. Conversely, when switching from a double-knot mode to a single-knot mode, the first and second branch shafts can be separated by a clutch, and the phase difference between them can be adjusted to zero to establish a driving connection between them. The above switching action is simple, convenient, and highly efficient.

[0011] In some embodiments, the clutch includes a first disc body disposed on a first split shaft, a second disc body disposed on a second split shaft, and a preload member;

[0012] The first disc body is provided with a first transmission part, and the second disc body is provided with a second transmission part. The second disc body can slide along the axial direction of the second sub-axis so that the first transmission part and the second transmission part are connected or separated in a transmission manner. The pre-tightening member is used to make the second transmission part tend to maintain a transmission connection with the first transmission part.

[0013] In some embodiments, one of the first transmission part and the second transmission part is a protrusion, and the other is a groove that mates with the protrusion. Two sets of grooves are provided. In the single-knot mode, the protrusion mates with one set of grooves for transmission. In the double-knot mode, the protrusion mates with the other set of grooves for transmission.

[0014] In some implementations, in the single-knot mode, the phase difference between the first and second sub-axis along the rotation direction is zero; in the double-knot mode, the phase difference between the first and second sub-axis along the rotation direction is preferably 220°-260°.

[0015] In some embodiments, the cam shaft is arranged parallel to the knotting tube.

[0016] In some embodiments, the knotting device includes a sliding component and three sets of connecting components. The sliding component includes a linear slide rail and three sets of sliders. The linear slide rail is arranged parallel to the cam shaft. The sliders are slidably disposed on the linear slide rail. Each of the connecting components is respectively connected to one set of sliders, and each of the connecting components is respectively connected to the clamp module, the yarn hook needle, and the yarn pusher needle.

[0017] The connecting assembly includes a guide pin, and the clamp module cam, the hook needle cam, and the push needle cam are provided with guide grooves. The guide pin can cooperate with the guide grooves to drive the clamp module, the hook needle, and the push needle to slide along the axial direction of the knotting tube.

[0018] In some embodiments, the driving mechanism includes a drive motor, a first transmission member, and a second transmission member, wherein the first transmission member is drivingly connected to the drive motor and the knotting mechanism, and the second transmission member is drivingly connected to the drive motor and the cam mechanism; or

[0019] The driving mechanism includes a drive motor, a first transmission component, and a second transmission component. The first transmission component is drivingly connected to the drive motor and the cam mechanism, and the second transmission component is drivingly connected to the cam mechanism and the knotting mechanism; or

[0020] The driving mechanism includes a drive motor, a first transmission component, and a second transmission component. The first transmission component drives the drive motor and the knotting mechanism, and the second transmission component drives the knotting mechanism and the cam mechanism.

[0021] In some embodiments, the drive mechanism includes a drive motor, a first transmission component, and a second transmission component. Both the first and second transmission components include a driving wheel, a driven wheel, and a synchronous belt connecting the driving wheel and the driven wheel. In the first transmission component, the transmission ratio of the driving wheel to the driven wheel is 1:1, and in the second transmission component, the transmission ratio of the driving wheel to the driven wheel is 3:1.

[0022] In some embodiments, the ratio of the rotational speed of the knotting mechanism to the rotational speed of the cam mechanism is 3:1.

[0023] A knotting machine according to a second aspect of the present invention includes the knotting device described in the above embodiment.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the knotting device according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A magnified view of part A;

[0028] Figure 3 This is a schematic diagram of the structure of the knotting device for removing the mounting bracket according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the cam mechanism of the knotting device according to an embodiment of the present invention.

[0030] Figure label:

[0031] 100. Drive mechanism; 110. Drive motor; 120. First transmission component; 130. Second transmission component;

[0032] 200. Knotting mechanism; 210. Knotting tube; 220. Clip module; 230. Crochet needle; 240. Yarn pusher needle;

[0033] 300, Cam mechanism; 310, Cam shaft; 311, First split shaft; 312, Second split shaft; 313, Clutch; 3131, First disc; 3132, Second disc; 320, Clip module cam; 330, Hook needle cam; 340, Push needle cam; 341, Guide groove;

[0034] 350. Sliding assembly; 351. Linear guide rail; 352. Slider; 360. Connecting assembly; 361. Guide pin;

[0035] 400. Mounting bracket;

[0036] 10. Yarn; Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0039] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0041] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Please refer to Figures 1-4 This application provides a knotting device, which includes a mounting frame 400, a drive mechanism 100, a knotting mechanism 200, a cam mechanism 300, and a knotting hook. The drive mechanism 100, the knotting mechanism 200, and the cam mechanism 300 are all mounted on the mounting frame 400.

[0043] Please refer to Figure 1 and Figure 2 The knotting mechanism 200 is driven to rotate by the drive mechanism 100. During the knotting process, the knotting mechanism 200 is in direct contact with the yarn 10. The knotting mechanism 200 includes a knotting tube 210, a clamp module 220, a yarn hook 230, and a yarn pusher 240. The clamp module 220, the yarn hook 230, and the yarn pusher 240 are connected to the knotting tube 210 and can all slide along the axial direction of the knotting tube 210.

[0044] The clamp module 220 is used to clamp the yarn 10, and then during the rotation of the knotting mechanism 200, the clamp module 220 rotates to wrap the yarn 10 around the knotting tube 210.

[0045] The knotting tube 210 includes a tube body and a knotting head. The knotting head is connected to one end of the tube body. The tube body is used to install the knotting head on the warping machine. The yarn 10 can be wound around the knotting head of the knotting tube 210.

[0046] The hook needle 230 can extend and, when retracted, hook the yarn 10 and into the knotting tube 210. Specifically, the knotting tube 210 is provided with a guide groove that passes through the knotting head along the axial direction of the knotting tube 210. The hook needle 230 is slidably fitted into the guide groove to ensure the stability of the movement of the hook needle 230.

[0047] The push needle 240 is used to push the yarn 10 wrapped around the knot head out of the knot head. The pushing action occurs after the hook needle 230 retracts.

[0048] Please refer to Figure 3 and Figure 4The cam mechanism 300 is driven to rotate by the drive mechanism 100. The cam mechanism 300 includes a cam shaft 310, a clamp module cam 320, a hook needle cam 330, and a push needle cam 340.

[0049] The clip module cam 320, the hook needle cam 330, and the push needle cam 340 are all mounted on the cam shaft 310 to rotate with it. Furthermore, the clip module cam 320 can drive the clip module 220 to extend and retract axially along the knotting tube 210. The hook needle cam 330 can drive the hook needle 230 to extend and retract axially along the knotting tube 210. The push needle cam 340 can drive the push needle 240 to extend and retract axially along the knotting tube 210.

[0050] It should be noted that the structure of the above-mentioned knotting hook, knotting tube 210, clamp module 220, yarn hook 230, yarn pusher 240, clamp module cam 320, yarn hook cam 330 and yarn pusher cam 340 working together to achieve the knotting action is existing technology.

[0051] Please refer to Figure 3 and Figure 4 The camshaft 310 includes a first split shaft 311, a second split shaft 312, and a clutch 313 connecting the first split shaft 311 and the second split shaft 312. It is understood that the clutch 313 can connect the first split shaft 311 and the second split shaft 312 to transmit power, or disengage the first split shaft 311 and the second split shaft 312. Preferably, the first split shaft 311 and the second split shaft 312 are coaxially arranged.

[0052] The clip module cam 320 is mounted on the first split shaft 311. The clip module cam 320 can rotate with the first split shaft 311 and drive the clip module 220 to extend and retract along the axial direction of the knotting tube 210. The yarn hook cam 330 and the yarn pusher cam 340 are mounted on the second split shaft 312. The yarn hook cam 330 can rotate with the second split shaft 312 and drive the yarn hook 230 to extend and retract along the axial direction of the knotting tube 210. The yarn pusher cam 340 can rotate with the second split shaft 312 and drive the yarn pusher 240 to extend and retract along the axial direction of the knotting tube 210.

[0053] The knotting mechanism 200 has a single-knot mode and a double-knot mode. In the single-knot mode, the phase difference along the rotation direction between the first split shaft 311 and the second split shaft 312 is zero. In the double-knot mode, the phase difference along the rotation direction between the first split shaft 311 and the second split shaft 312 is greater than zero. The clutch 313 is used to disengage the first split shaft 311 and the second split shaft 312 to adjust their phase difference, thereby switching between the single-knot mode and the double-knot mode.

[0054] Understandably, when switching from single-knot mode to double-knot mode, the first branch shaft 311 and the second branch shaft 312 can be disengaged via clutch 313. After adjusting the phase difference between the first branch shaft 311 and the second branch shaft 312, they can be connected in transmission. Conversely, when switching from double-knot mode to single-knot mode, the first branch shaft 311 and the second branch shaft 312 can be disengaged via clutch 313. After adjusting the phase difference between the first branch shaft 311 and the second branch shaft 312 to zero, they can be connected in transmission. This switching action is simple, convenient, and efficient.

[0055] It is understood that the phase difference between the first sub-axis 311 and the second sub-axis 312 along the rotation direction is not limited. In some embodiments, in the double-knot mode, the phase difference between the first sub-axis 311 and the second sub-axis 312 along the rotation direction is preferably 220°-260°. Further, in some embodiments, the phase difference between the first sub-axis 311 and the second sub-axis 312 along the rotation direction is 240°.

[0056] It is understandable that the phase difference between the first sub-axis 311 and the second sub-axis 312 along the rotation direction is 240°. This can be achieved by rotating the second sub-axis 312 240° in the rotation direction, or by rotating the second sub-axis 312 120° in the opposite direction. After adjustment, the phase of the hook needle cam 330 and the push needle cam 340 set on the second sub-axis 312 is adjusted.

[0057] In some embodiments, the rotational speed ratio of the knotting mechanism 200 to the cam mechanism 300 is 3:1. That is, the cam mechanism 300 rotates 360° in one revolution, while the knotting mechanism 200 rotates 1080° in three revolutions.

[0058] The following explanation uses the example of a 3:1 ratio between the rotational speed of the knotting mechanism 200 and the rotational speed of the cam mechanism 300, with a phase difference of 240° between the first split shaft 311 and the second split shaft 312 along the rotational direction.

[0059] Please refer to Figures 1-4In the single-knot mode, when the knotting mechanism 200 rotates to 90°, the clamp module 220 clamps the yarn 10; when the knotting mechanism 200 rotates to 360°, the clamp module 220, holding the yarn 10, wraps it around the knotting tube 210 once, and the cam mechanism 300 rotates 120°; as the cam mechanism 300 continues to rotate, the clamp module cam 320 and the hook needle cam 330 respectively cause the clamp module 220 and the hook needle 230 to extend; when the knotting mechanism 200 rotates to 450°, the cam mechanism 300 rotates to 150°, and the clamp module 220... When the knotting mechanism 200 rotates to 540°, the cam mechanism 300 rotates to 180°, and the clamp module cam 320 and the hook needle cam 330 respectively cause the clamp module 220 and the hook needle 230 to retract, and the hook needle 230 hooks the yarn 10; when the knotting mechanism 200 rotates to 630°, the cam mechanism 300 rotates to 210°, and the clamp module cam 320 and the hook needle cam 330 respectively cause the clamp module 220 and the hook needle 230 to retract completely, at which point the yarn 10 enters the knotting tube 210. Simultaneously, the push needle cam 340 begins to push out the push needle 240, allowing the yarn 10 wrapped around the knotting tube 210 to detach from the knotting tube 210; when the knotting mechanism 200 rotates to 720°, the cam mechanism 300 rotates 240°, the clamp module cam 320 causes the clamp module 220 to extend, and at the same time, the push needle cam 340 causes the push needle 240 to retract; the knotting mechanism 200 completes one empty loop by rotating from 720° to 990°; when the knotting mechanism 200 rotates to 990°, the clamp module cam 320 causes the clamp module 220 to retract, and at the same time, the knot hook hooks the yarn 10 and pulls it; when the knotting mechanism 200 rotates to 1080°, the knot hook causes the yarn 10 to detach from the knotting tube 210, completing a single knot.

[0060] In the double-knot mode, when the knotting mechanism 200 rotates to 90°, the clamp module 220 clamps the yarn 10; when the knotting mechanism 200 rotates to 360°, the clamp module 220, holding the yarn 10, wraps it around the knotting tube 210 once, the cam mechanism 300 rotates 120°, the cam mechanism 300 continues to rotate, and the clamp module cam 320 causes the clamp module 220 to begin extending; the knotting mechanism 200 continues to rotate from 360° to 720°, causing the yarn 10 to... 0 rotates around the tip of the knotting tube 210; when the knotting mechanism 200 rotates to 720°, the cam mechanism 300 rotates 240°, and the clamp module 220 clamps the yarn 10 and wraps it around the tip of the knotting tube 210 once. The clamp module cam 320 and the hook needle cam 330 cause the clamp module 220 and the hook needle 230 to extend; when the knotting mechanism 200 rotates to 810°, the cam mechanism 300 rotates 270°, and the clamp module cam 320 and the hook needle 230 extend. The needle cam 330 fully extends the clamp module 220 and the hook needle 230; when the knotting mechanism 200 rotates to 900°, the cam mechanism 300 rotates 300°, and the clamp module cam 320 and the hook needle cam 330 cause the clamp module 220 and the hook needle 230 to begin retracting, and the hook needle 230 hooks the yarn 10; when the knotting mechanism 200 rotates to 990°, the cam mechanism 300 rotates 330°, and the clamp module 220 and the hook needle 230 retract, and the hook needle 230 hooks the yarn 10; When the needle 230 retracts completely, the yarn 10 enters the knotting tube 210. At the same time, the needle-pushing cam 340 pushes the needle 240 out, allowing the yarn 10 wrapped around the knotting tube 210 to detach from the knotting tube 210. When the knotting mechanism 200 rotates to 1080°, the cam mechanism 300 rotates 360°, and the needle-pushing cam 340 retracts the needle 240. The knot hook catches the yarn 10 and detaches the yarn 10 from the knotting tube 210, completing a double knot.

[0061] The following is combined Figure 4 The structure of clutch 313 will be explained as follows:

[0062] In some embodiments, the clutch 313 includes a first disc 3131 disposed on a first split shaft 311, a second disc 3132 disposed on a second split shaft 312, and a preload member. It is understood that the first disc 3131 rotates with the first split shaft 311, and the second disc 3132 rotates with the second split shaft 312.

[0063] A first transmission part is provided on a first disc body 3131, and a second transmission part is provided on a second disc body 3132. The second disc body 3132 can slide along the axial direction of the second split shaft 312 to connect or separate the first transmission part and the second transmission part. Specifically, the second disc body 3132 moves toward the first disc body 3131 to connect and transmit power between the first and second transmission parts; or the second disc body 3132 moves away from the first disc body 3131 to separate the first and second transmission parts.

[0064] The preload is used to ensure that the second transmission unit tends to maintain a transmission connection with the first transmission unit. That is, in either a double-knot or single-knot mode, the preload ensures that the second transmission unit remains connected to the first transmission unit. During mode switching, when the first and second transmission units separate, the preload provides power to move the second transmission unit toward the first transmission unit to re-establish the transmission connection.

[0065] The specific structure of the preload element is not limited; for example, a compression spring or a tension spring can be used. In some embodiments, a mounting hole is provided in the second drive shaft, and the compression spring is disposed in the mounting hole, with one end of the compression spring abutting against the inner wall of the mounting hole and the other end abutting against the second disc 3132.

[0066] The structures of the first and second transmission parts are not limited. For example, the first and second transmission parts can be friction surfaces, and transmission can be achieved through friction.

[0067] In some embodiments, one of the first and second transmission parts is a protrusion, and the other is a groove that mates with the protrusion. For example, the second transmission part is a protrusion protruding from the surface of the second disc 3132, and the first transmission part is a groove formed on the surface of the first disc 3131. Alternatively, the second transmission part is a groove on the surface of the second disc 3132, and the first transmission part is a protrusion on the surface of the first disc 3131.

[0068] Two sets of grooves are provided. In single-knot mode, the protrusion engages with one set of grooves for transmission; in double-knot mode, the protrusion engages with the other set of grooves for transmission. This two-set design improves efficiency during switching and enables rapid positioning of the rotation angle.

[0069] The protrusion can be a pin, and the groove can be a pin hole or a notch. It should also be noted that each group of grooves can include one or more grooves, and when multiple protrusions are provided, some grooves in two groups can belong to both one and the other group simultaneously.

[0070] Understandably, in order to push the clamp module 220, the hook needle 230, and the push needle 240 to move along the axial direction of the knotting tube 210, the cam mechanism 300 can be set perpendicular to the axial direction of the knotting tube 210. By rotating the cam shaft 310, the clamp module cam 320, the hook needle cam 330, and the push needle cam 340 can all push the clamp module 220, the hook needle 230, and the push needle 240 to move along the axial direction of the knotting tube 210 by changing their own radial height dimensions, that is, by changing their dimensions along the axial direction of the knotting tube 210.

[0071] Please refer to Figure 3In some embodiments, the cam shaft 310 is arranged parallel to the knotting tube 210. In this case, the clamp module cam 320, the hook needle cam 330, and the push needle cam 340 can respectively push the clamp module 220, the hook needle 230, and the push needle 240 to move along the axial direction of the knotting tube 210 by changing their shapes along their own axial direction. Furthermore, arranging the cam shaft 310 parallel to the knotting tube 210 makes the overall structure relatively more compact, and the transmission connection mechanism between the two and the drive mechanism 100 can be arranged in parallel, resulting in a simpler arrangement structure, facilitating later maintenance, and further compressing the structure.

[0072] Furthermore, this is to guide the axial movement of the clamp module 220, the hook needle 230, and the push needle 240 along the knotting tube 210. Please refer to... Figure 3 In some embodiments, the knotting device includes a sliding assembly 350 and three sets of connecting assemblies 360, wherein one set of connecting assemblies 360 connects the clip module 220 and the clip module cam 320, one set of connecting assemblies 360 connects the hook needle 230 and the hook needle cam 330, and one set of connecting assemblies 360 connects the push needle 240 and the push needle cam 340.

[0073] The sliding assembly 350 includes a linear slide rail 351 and three sets of sliders 352. The linear slide rail 351 is set parallel to the cam shaft 310, and the sliders 352 are slidably mounted on the linear slide rail 351. Each connecting assembly 360 is connected to one set of sliders 352. That is, each connecting assembly 360 can slide along the slide rail with the sliders 352, while the clamp module 220, the yarn hook 230, or the yarn pusher 240 can slide with the connecting assembly 360.

[0074] The connecting assembly 360 includes a guide pin 361, a clip module cam 320, a hook needle cam 330, and a push needle cam 340, all of which have guide grooves 341. The guide pin 361 can cooperate with the guide groove 341 to drive the clip module 220, hook needle 230, and push needle 240 to slide axially along the knotting tube 210. Specifically, the guide groove 341 is a closed annular groove, with a portion of its area extending axially along the cam shaft 310. One end of the guide pin 361 extends into the guide groove 341 and moves along the guide groove 341 under the guidance of the sidewall of the guide groove 341. When the guide pin 361 enters the aforementioned axially extended area of ​​the guide groove 341, it will move axially toward the cam shaft 310, thereby driving the connecting assembly 360 to move in the same direction.

[0075] Understandably, by setting the sliding component 350 to guide the movement of the clamp module 220, the hook needle 230, and the push needle 240 along the axial direction of the knotting tube 210, the accuracy of movement can be improved and the possibility of skew and jamming can be reduced.

[0076] The following is combined Figure 3 The structure of the drive mechanism 100 is described below:

[0077] In some embodiments, the drive mechanism 100 includes a drive motor 110, a first transmission member 120, and a second transmission member 130. The first transmission member 120 is driveably connected to the drive motor 110 and the knotting mechanism 200, and the second transmission member 130 is driveably connected to the drive motor 110 and the cam mechanism 300. That is, by using a single drive motor 110 to drive both the knotting mechanism 200 and the cam mechanism 300, the overall manufacturing cost can be reduced.

[0078] In other embodiments, the drive mechanism 100 includes a drive motor 110, a first transmission member 120, and a second transmission member 130. The first transmission member 120 drives the drive motor 110 and the knotting mechanism 200, and the second transmission member 130 drives the knotting mechanism 200 and the cam mechanism 300. That is, the drive motor 110 drives the knotting mechanism 200 through the first transmission member 120, and the knotting mechanism 200 transmits power to the cam mechanism 300 through the second transmission member 130.

[0079] In other embodiments, the first transmission member 120 is connected to the drive motor 110 and the cam mechanism 300, and the second transmission member 130 is connected to the cam mechanism 300 and the knotting mechanism 200. That is, the drive motor 110 drives the cam mechanism 300 through the first transmission member 120, and then the cam mechanism 300 transmits power to the knotting mechanism 200 through the second transmission member 130.

[0080] The knotting mechanism 200 can be positioned above the cam mechanism 300. The drive motor 110 can be positioned above the knotting mechanism 200.

[0081] The specific types of the first transmission component 120 and the second transmission component 130 are not limited; for example, gears can be used.

[0082] In some embodiments, both the first transmission member 120 and the second transmission member 130 are synchronous belt assemblies, each including a driving pulley, a driven pulley, and a synchronous belt. In the first transmission member 120, the transmission ratio between the driving pulley and the driven pulley is 1:1, and in the second transmission member 130, the transmission ratio between the driving pulley and the driven pulley is 3:1.

[0083] This application also provides a knotting machine, including the knotting device described in the above embodiments.

[0084] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A knotting device, characterized in that, The knotting device includes: Drive mechanism; A knotting mechanism, driven to rotate by the drive mechanism, includes a knotting tube, a clamp module, a yarn hook, and a yarn pusher. The clamp module, the yarn hook, and the yarn pusher are connected to the knotting tube and are all capable of sliding along the axial direction of the knotting tube. A cam mechanism, driven to rotate by the drive mechanism, includes a cam shaft, a clamp module cam, a hook needle cam, and a push needle cam. The cam shaft includes a first sub-shaft, a second sub-shaft, and a clutch. The clamp module cam is located on the first sub-shaft and can rotate with the first sub-shaft, driving the clamp module to extend and retract axially along the knotting tube. The hook needle cam and the push needle cam are located on the second sub-shaft. The hook needle cam can rotate with the second sub-shaft and drive the hook needle to extend and retract axially along the knotting tube. The push needle cam can rotate with the second sub-shaft and drive the push needle to extend and retract axially along the knotting tube. The clutch includes a first disc body located on the first sub-shaft, a second disc body located on the second sub-shaft, and a pre-tensioning element. The knotting mechanism has a single knot mode and a double knot mode. The clutch can separate the first branch shaft from the second branch shaft so that the first branch shaft and the second branch shaft can rotate relative to each other, thereby switching between the single knot mode and the double knot mode, or making the first branch shaft and the second branch shaft drively connected.

2. The knotting device according to claim 1, characterized in that, The first disc body is provided with a first transmission part, and the second disc body is provided with a second transmission part. The second disc body can slide along the axial direction of the second sub-axis so that the first transmission part and the second transmission part are connected or separated in a transmission manner. The pre-tightening member is used to make the second transmission part tend to maintain a transmission connection with the first transmission part.

3. The knotting device according to claim 2, characterized in that, One of the first transmission part and the second transmission part is a protrusion, and the other is a groove that cooperates with the protrusion. There are two sets of grooves. In the single knot mode, the protrusion cooperates with one set of grooves for transmission. In the double knot mode, the protrusion cooperates with the other set of grooves for transmission.

4. The knotting device according to claim 1, characterized in that, In single-knot mode, the phase difference between the first and second sub-axis along the rotation direction is zero. In double-knot mode, the phase difference between the first and second sub-axis along the rotation direction is 220°-260°.

5. The knotting device according to claim 1, characterized in that, The cam shaft is arranged parallel to the knotting tube.

6. The knotting device according to claim 5, characterized in that, The knotting device includes a sliding component and three sets of connecting components. The sliding component includes a linear slide rail and three sets of sliders. The linear slide rail is arranged parallel to the cam shaft. The sliders are slidably disposed on the linear slide rail. Each of the connecting components is respectively connected to one set of sliders, and each of the connecting components is respectively connected to the clamp module, the yarn hook needle and the yarn pusher needle. The connecting assembly includes a guide pin, and the clamp module cam, the hook needle cam, and the push needle cam are provided with guide grooves. The guide pin can cooperate with the guide grooves to drive the clamp module, the hook needle, and the push needle to slide along the axial direction of the knotting tube.

7. The knotting device according to any one of claims 1-4, characterized in that, The driving mechanism includes a drive motor, a first transmission component, and a second transmission component. The first transmission component is drivingly connected to the drive motor and the knotting mechanism, and the second transmission component is drivingly connected to the drive motor and the cam mechanism; or The driving mechanism includes a drive motor, a first transmission component, and a second transmission component. The first transmission component is drivingly connected to the drive motor and the cam mechanism, and the second transmission component is drivingly connected to the cam mechanism and the knotting mechanism; or The driving mechanism includes a drive motor, a first transmission component, and a second transmission component. The first transmission component drives the drive motor and the knotting mechanism, and the second transmission component drives the knotting mechanism and the cam mechanism.

8. The knotting device according to claim 1, characterized in that, The ratio of the rotational speed of the knotting mechanism to that of the cam mechanism is 3:

1.

9. The knotting device according to claim 8, characterized in that, The drive mechanism includes a drive motor, a first transmission component, and a second transmission component. Both the first and second transmission components include a driving wheel, a driven wheel, and a synchronous belt connecting the driving wheel and the driven wheel. In the first transmission component, the transmission ratio of the driving wheel to the driven wheel is 1:1, and in the second transmission component, the transmission ratio of the driving wheel to the driven wheel is 3:

1.

10. A menstrual binding machine, characterized in that, The knotting device includes any one of claims 1 to 9.

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