Knotting device and warp tying machine

Abstract

The invention discloses a knotting device and a warp tying machine. The knotting device comprises a driving mechanism; the knotting mechanism is driven by the driving mechanism to rotate; the cam mechanism is driven by the driving mechanism to rotate, the cam mechanism comprises a cam rotating shaft, and the cam rotating shaft comprises a first split shaft, a second split shaft and a clutch connected with the first split shaft and the second split shaft; wherein the knotting mechanism has a single-knot knotting mode and a double-knot knotting mode, the clutch can enable the first split shaft and the second split shaft to be separated so that the first split shaft and the second split shaft can rotate relatively, and therefore the knotting mechanism is switched between the single-knot knotting mode and the double-knot knotting mode. Or the first split shaft is in transmission connection with the second split shaft. According to the knotting device and the warp tying machine, simple and rapid switching between a single knot tying mode and a double knot tying mode can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a knotting device and a warp-tying machine. Background Art

[0002] The warp tying machine is an automatic device that ties the yarn on the warp beam that is about to run out with the yarn on the new warp beam. The use of the warp tying machine has changed the manual knotting of the yarn to automatic knotting, which greatly improves the production efficiency and reduces the labor production cost.

[0003] Currently, the warp tying machines on the market need to replace parts to change from a single knot to a double knot. The switching operation is cumbersome and time-consuming, affecting production efficiency. Summary of the invention

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

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

[0006] Driving mechanism;

[0007] A knotting mechanism, driven to rotate by the driving mechanism, the knotting mechanism comprising a knotting tube, a clamp module, a yarn hook needle and a yarn push needle, the clamp module, the yarn hook needle and the yarn push needle are connected to the knotting tube and can slide along the axial direction of the knotting tube; and

[0008] A cam mechanism is driven to rotate by the driving mechanism, the cam mechanism comprises a cam shaft, a clip module cam, a hook needle cam and a yarn pushing needle cam, the cam shaft comprises a first sub-shaft, a second sub-shaft and a clutch, the clip module cam is arranged on the first sub-shaft, the clip module cam can rotate with the first sub-shaft and drive the clip module to extend and retract along the axial direction of the knotting tube, the hook needle cam and the yarn pushing needle cam are arranged 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 along the axial direction of the knotting tube, and the yarn pushing needle cam can rotate with the second sub-shaft and drive the yarn pushing needle to extend and retract along the axial direction of the knotting tube;

[0009] Among them, the knotting mechanism has a single knot tying mode and a double knot tying mode, and the clutch can separate the first sub-shaft from the second sub-shaft so that the first sub-shaft and the second sub-shaft can rotate relative to each other, thereby switching between the single knot tying mode and the double knot tying mode, or making the first sub-shaft and the second sub-shaft transmission connected.

[0010] The knotting device according to the embodiment of the present invention has at least the following beneficial effects: when it is necessary to switch from the single knot tying mode to the double knot tying mode, the first sub-shaft and the second sub-shaft can be separated by the clutch, and the first sub-shaft and the second sub-shaft can be connected in transmission after adjusting the phase difference between the first sub-shaft and the second sub-shaft. Conversely, when it is necessary to switch from the double knot tying mode to the single knot tying mode, the first sub-shaft and the second sub-shaft can be separated by the clutch, and the phase difference between the first sub-shaft and the second sub-shaft can be adjusted to zero and the first sub-shaft and the second sub-shaft can be connected in transmission. The above switching action is simple, convenient and efficient.

[0011] In some embodiments, the clutch includes a first disc body disposed on the first sub-shaft, a second disc body disposed on the second sub-shaft, and a pre-tightening member;

[0012] The first disk body is provided with a first transmission part, and the second disk body is provided with a second transmission part. The second disk body can slide along the axial direction of the second sub-axis to make the first transmission part and the second transmission part transmission connected or separated. The preload part is used to make the second transmission part have a tendency to maintain 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 cooperates with the protrusion. The grooves are provided in two groups. In a single knot tying mode, the protrusion cooperates with one group of the grooves for transmission, and in a double knot tying mode, the protrusion cooperates with the other group of the grooves for transmission.

[0014] In some embodiments, in single knot tying mode, the phase difference between the first sub-axis and the second sub-axis along the rotation direction is zero, and in double knot tying mode, the phase difference between the first sub-axis and the 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 assembly and three groups of connecting assemblies, the sliding assembly includes a linear slide rail and three groups of sliders, the linear slide rail is arranged parallel to the cam shaft, the slider is slidably arranged on the linear slide rail, each of the connecting assemblies is respectively connected to a group of the sliders, and each of the connecting assemblies is respectively connected to the clip module, the hooking needle and the pushing needle;

[0017] Wherein, the connecting assembly includes a guide needle, and guide grooves are provided on the clamp module cam, the yarn hook needle cam and the yarn push needle cam. The guide needle can cooperate with the guide groove to drive the clamp module, the yarn hook needle and the yarn push needle to slide axially along the knotting tube.

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

[0019] The driving mechanism comprises a driving motor, a first transmission member and a second transmission member, wherein the first transmission member is drivingly connected between the driving motor and the cam mechanism, and the second transmission member is drivingly connected between the cam mechanism and the knotting mechanism; or

[0020] The driving mechanism includes a driving motor, a first transmission member and a second transmission member. The first transmission member is drivingly connected between the driving motor and the knotting mechanism, and the second transmission member is drivingly connected between the knotting mechanism and the cam mechanism.

[0021] In some embodiments, the driving mechanism includes a driving motor, a first transmission member and a second transmission member, and the first transmission member and the second transmission member both include a driving wheel, a driven wheel and a synchronous belt connecting the driving wheel and the driven wheel, wherein in the first transmission member, the transmission ratio of the driving wheel and the driven wheel is 1:1, and in the second transmission member, the transmission ratio of the driving wheel and the driven wheel is 3:1.

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

[0023] A warp tying machine according to an embodiment of the second aspect of the present invention comprises the knotting device in the above embodiment.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0027] Figure 2 for Figure 1 A schematic diagram of a local A enlargement;

[0028] Figure 3 It is a structural schematic diagram of a knotting device according to an embodiment of the present invention, in which a mounting frame is removed;

[0029] Figure 4 Schematic diagram of the structure of the cam mechanism of the knotting device according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] 100, driving mechanism; 110, driving motor; 120, first transmission member; 130, second transmission member;

[0032] 200, knotting mechanism; 210, knotting tube; 220, clip module; 230, yarn hook needle; 240, yarn push needle;

[0033] 300, cam mechanism; 310, cam shaft; 311, first sub-shaft; 312, second sub-shaft; 313, clutch; 3131, first disk; 3132, second disk; 320, clip module cam; 330, hook needle cam; 340, push needle cam; 341, guide groove;

[0034] 350, sliding assembly; 351, linear slide rail; 352, slider; 360, connecting assembly; 361, guide needle;

[0035] 400, mounting frame;

[0036] 10. Yarn; DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are 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.

[0039] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] Please refer to Figure 1-Figure 4 The embodiment of the present application provides a knotting device, which includes a mounting frame 400, a driving mechanism 100, a knotting mechanism 200, a cam mechanism 300 and a knot-arranging hook. The driving 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 driving mechanism 100. The knotting mechanism 200 is in direct contact with the yarn 10 during the knotting process, and the knotting mechanism 200 includes a knotting tube 210, a clamp module 220, a yarn hook needle 230, and a yarn push needle 240. The clamp module 220, the yarn hook needle 230, and the yarn push needle 240 are connected to the knotting tube 210 and can slide along the axial direction of the knotting tube 210.

[0044] The clamp module 220 is used to clamp the yarn 10 , and when the knotting mechanism 200 rotates, 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 warp knotting machine. The yarn 10 can be wound around the knotting head of the knotting tube 210.

[0046] The hooking needle 230 can be extended, and can hook the yarn 10 and hook it into the knotting tube 210 when retracted. Specifically, the knotting tube 210 is provided with a guide groove, which penetrates the knotting head along the axial direction of the knotting tube 210, and the hooking needle 230 is slidably assembled in the guide groove to ensure the movement stability of the hooking needle 230.

[0047] The yarn pusher 240 is used to push the yarn 10 that is wound on the knotting head out of the knotting head. The time of its pushing out action is after the hook yarn needle 230 retracts.

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

[0049] The clamp module cam 320, the yarn hook needle cam 330 and the yarn push needle cam 340 are all arranged on the cam shaft 310 to rotate with the cam shaft 310. Further, the clamp module cam 320 can drive the clamp module 220 to extend and retract along the axial direction of the knotting tube 210. The yarn hook needle cam 330 can drive the yarn hook needle 230 to extend and retract along the axial direction of the knotting tube 210. The yarn push needle cam 340 can drive the yarn push needle 240 to extend and retract along the axial direction of the knotting tube 210.

[0050] It should be noted that the structure in which the knot-arranging hook, knotting tube 210, clamp module 220, yarn hook needle 230, yarn push needle 240, clamp module cam 320, yarn hook needle cam 330 and yarn push needle cam 340 cooperate to realize the knotting action is the prior art.

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

[0052] The clamp module cam 320 is arranged on the first sub-shaft 311, and the clamp module cam 320 can rotate with the first sub-shaft 311 and drive the clamp module 220 to extend and retract along the axial direction of the knotting tube 210. The hook needle cam 330 and the push needle cam 340 are arranged on the second sub-shaft 312, and the hook needle cam 330 can rotate with the second sub-shaft 312 and drive the hook needle 230 to extend and retract along the axial direction of the knotting tube 210. The push needle cam 340 can rotate with the second sub-shaft 312 and drive the push needle 240 to extend and retract along the axial direction of the knotting tube 210.

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

[0054] It is understandable that when it is necessary to switch from the single knot tying mode to the double knot tying mode, the first sub-shaft 311 and the second sub-shaft 312 can be separated by the clutch 313, and the first sub-shaft 311 and the second sub-shaft 312 can be connected in transmission after adjusting the phase difference between the first sub-shaft 311 and the second sub-shaft 312. Conversely, when it is necessary to switch from the double knot tying mode to the single knot tying mode, the first sub-shaft 311 and the second sub-shaft 312 can be separated by the clutch 313, and the phase difference between the first sub-shaft 311 and the second sub-shaft 312 can be adjusted to zero, and the first sub-shaft 311 and the second sub-shaft 312 can be connected in transmission. The above switching action is simple, convenient and efficient.

[0055] It is understandable 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 can be understood that the phase difference between the first sub-axis 311 and the second sub-axis 312 along the rotation direction is 240°, which can be obtained by rotating the second sub-axis 312 along the rotation direction by 240°, or by rotating the second sub-axis 312 in the reverse direction by 120°. After adjustment, the phases of the hooking needle cam 330 and the pushing needle cam 340 arranged on the second sub-axis 312 are adjusted.

[0057] In some embodiments, the ratio of the rotation speed of the knotting mechanism 200 to the rotation speed of the cam mechanism 300 is 3:1. That is, the cam mechanism 300 rotates one circle for a total of 360°, and the knotting mechanism 200 rotates three circles for a total of 1080°.

[0058] The following description is made by taking as an example that the ratio of the rotation speed of the knotting mechanism 200 to the rotation speed of the cam mechanism 300 is 3:1, and the phase difference between the first sub-axis 311 and the second sub-axis 312 in the rotation direction is 240°.

[0059] Please refer to Figure 1-Figure 4In the single knot tying 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 clamps the yarn 10 and wraps the knotting tube 210 around, and the cam mechanism 300 rotates 120°; the cam mechanism 300 continues to rotate, and the clamp module cam 320 and the hook needle cam 330 respectively make the clamp module 220 and the hook needle 230 start to extend; when the knotting mechanism 200 rotates to 450°, the cam mechanism 300 rotates to 150°, and the clamp modules 220 and the hook needle 230 are respectively extended. The yarn hook needle 230 is fully extended; when the knotting mechanism 200 rotates to 540°, the cam mechanism 300 rotates to 180°, the clamp module cam 320 and the yarn hook needle cam 330 respectively make the clamp module 220 and the yarn hook needle 230 start to retract, and the yarn hook needle 230 hooks the yarn 10; when the knotting mechanism 200 rotates to 630°, the cam mechanism 300 rotates to 210°, the clamp module cam 320 and the yarn hook needle cam 330 respectively make the clamp module 220 and the yarn hook needle 230 fully retract, and the yarn 10 enters the knotting tube 210. At the same time, the yarn pushing needle cam 340 starts to push the yarn pushing needle 240 out, allowing the yarn 10 wound on the knotting tube 210 to separate 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 begin to extend, and at the same time, the yarn pushing needle cam 340 retracts the yarn pushing needle 240; the knotting mechanism 200 rotates from 720° to 990° to complete an empty circle; when the knotting mechanism 200 rotates to 990°, the clamp module cam 320 causes the clamp module 220 to begin to retract, and at the same time, the knot arranging hook hooks the yarn 10 and pulls it; when the knotting mechanism 200 rotates to 1080°, the knot arranging hook separates the yarn 10 from the knotting tube 210, completing a single knot.

[0060] In the double knot tying 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 clamps the yarn 10 and wraps the knotting tube 210 around, 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 to extend; the knotting mechanism 200 continues to rotate from 360° to 720°, so that the yarn 10 is 0 rotates around the tip of the knotting tube 210; when the knotting mechanism 200 rotates to 720°, the cam mechanism 300 rotates 240°, the clamp module 220 clamps the yarn 10 and wraps around the tip of the knotting tube 210, and the clamp module cam 320 and the hook needle cam 330 make the clamp module 220 and the hook needle 230 start to extend; when the knotting mechanism 200 rotates to 810°, the cam mechanism 300 rotates 270°, the clamp module cam 320 and the hook needle cam 330 The needle cam 330 makes the clip module 220 and the hook needle 230 fully extend respectively; when the knotting mechanism 200 rotates to 900°, the cam mechanism 300 rotates 300°, the clip module cam 320 and the hook needle cam 330 make the clip module 220 and the hook needle 230 begin to retract, and the hook needle 230 hooks the yarn 10; when the knotting mechanism 200 rotates to 990°, the cam mechanism 300 rotates 330°, the clip module 220 and the hook needle 230 begin to retract, and the hook needle 230 hooks the yarn 10. The yarn needle 230 is fully retracted, allowing the yarn 10 to enter the knotting tube 210, and at the same time, the yarn needle pushing cam 340 pushes the yarn pushing needle 240 out, allowing the yarn 10 wound on the knotting tube 210 to escape from the knotting tube 210; when the knotting mechanism 200 rotates to 1080°, the cam mechanism 300 rotates 360°, and the yarn pushing cam 340 retracts the yarn pushing needle 240; the knot arranging hook hooks the yarn 10 and causes the yarn 10 to escape from the knotting tube 210, completing a double knot.

[0061] Combine the following Figure 4 , the structure of the clutch 313 is described:

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

[0063] The first disk 3131 is provided with a first transmission part, and the second disk 3132 is provided with a second transmission part. The second disk 3132 can slide along the axial direction of the second sub-shaft 312 to connect or separate the first transmission part with the second transmission part. Specifically, the second disk 3132 moves toward the first disk 3131 to connect the first transmission part with the second transmission part; or the second disk 3132 moves away from the first disk 3131 to separate the first transmission part from the second transmission part.

[0064] The pre-tensioner is used to make the second transmission part have a tendency to maintain a transmission connection with the first transmission part. That is, in the double knot tying mode or the single knot tying mode, the pre-tensioner can keep the second transmission part in a transmission connection with the first transmission part. During the switching mode, when the first transmission part is separated from the second transmission part, the pre-tensioner can provide power to move the second transmission part toward the first transmission part 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 may be used. In some embodiments, a mounting hole is provided in the second transmission shaft, and a compression spring is provided 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 disk 3132.

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

[0067] In some embodiments, one of the first transmission part and the second transmission part is a protrusion, and the other is a groove that matches the protrusion. For example, the second transmission part is a protrusion protruding from the surface of the second disk body 3132, and the first transmission part is a groove provided on the surface of the first disk body 3131. Or the second transmission part is a groove on the surface of the second disk body 3132, and the first transmission part is a protrusion provided on the surface of the first disk body 3131.

[0068] Two groups of grooves are provided. In the single knot mode, the protrusion cooperates with one group of grooves for transmission, and in the double knot mode, the protrusion cooperates with the other group of grooves for transmission. Thus, the provision of the two groups of grooves can improve the efficiency of the switching process and realize the rapid positioning of the rotation angle.

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

[0070] It can be understood that in order to push the clamp module 220, the yarn hook needle 230 and the yarn push needle 240 to move axially along the knotting tube 210, the cam mechanism 300 can be arranged perpendicular to the axial direction of the knotting tube 210, and the cam shaft 310 is rotated so that the clamp module cam 320, the yarn hook needle cam 330 and the yarn push needle cam 340 all change their own radial height dimensions, that is, change their axial dimensions along the knotting tube 210, thereby pushing the clamp module 220, the yarn hook needle 230 and the yarn push needle 240 to move axially along the knotting tube 210.

[0071] Please refer to Figure 3In some embodiments, the cam shaft 310 is arranged in parallel with the knotting tube 210. At this time, the clamp module cam 320, the hooking needle cam 330 and the pushing needle cam 340 can respectively push the clamp module 220, the hooking needle 230 and the pushing needle 240 to move along the axial direction of the knotting tube 210 by changing their shapes along their own axial directions. In addition, arranging the cam shaft 310 in parallel with the knotting tube 210 can make the overall structure relatively more compact, and the transmission connection mechanisms of the two and the driving mechanism 100 can be arranged in parallel, and the arrangement structure is relatively more concise, which is convenient for later maintenance and makes the structure more compact.

[0072] Further, in order to guide the clamp module 220, the yarn hooking needle 230 and the yarn pushing needle 240 along the axial movement process of the knotting tube 210. Please refer to Figure 3 In some embodiments, the knotting device includes a sliding assembly 350 and three groups of connecting assemblies 360, wherein one group of connecting assemblies 360 connects the clamp module 220 and the clamp module cam 320, one group of connecting assemblies 360 connects the hook needle 230 and the hook needle cam 330, and one group 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 groups of sliders 352. The linear slide rail 351 is arranged parallel to the cam shaft 310. The sliders 352 are slidably arranged on the linear slide rail 351. Each connecting assembly 360 is respectively connected to a group of sliders 352. In other words, each connecting assembly 360 can slide along the slide rail with the sliders 352, and the clip module 220, the yarn hooking needle 230 or the yarn pushing needle 240 can slide along with the connecting assembly 360.

[0074] The connecting assembly 360 includes a guide pin 361. A guide slot 341 is provided on the clamp module cam 320, the hooking needle cam 330 and the pushing needle cam 340. The guide pin 361 can cooperate with the guide slot 341 to drive the clamp module 220, the hooking needle 230 and the pushing needle 240 to slide axially along the knotting tube 210. Specifically, the guide slot 341 is a closed annular slot, a part of which is bent and extended along the axial direction of the cam shaft 310. One end of the guide pin 361 extends into the guide slot 341 and moves along the guide slot 341 under the guidance of the side wall of the guide slot 341. When the guide pin 361 enters the above-mentioned axial bending extension area of ​​the guide slot 341, it will move toward the axial direction of the cam shaft 310, thereby driving the connecting assembly 360 to move in the same direction.

[0075] It is understandable that by providing the sliding assembly 350 to guide the axial movement of the clamp module 220, the yarn hooking needle 230 and the yarn pushing needle 240 along the knotting tube 210, the movement accuracy can be improved and the possibility of skewing and jamming can be reduced.

[0076] Combine the following Figure 3 , the structure of the driving mechanism 100 is described:

[0077] In some embodiments, the driving mechanism 100 includes a driving motor 110, a first transmission member 120, and a second transmission member 130. The first transmission member 120 is connected to the driving motor 110 and the knotting mechanism 200, and the second transmission member 130 is connected to the driving motor 110 and the cam mechanism 300. In other words, the driving of the knotting mechanism 200 and the cam mechanism 300 by one driving motor 110 can reduce the overall manufacturing cost.

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

[0080] The knotting mechanism 200 may be disposed above the cam mechanism 300. The driving motor 110 may be disposed above the knotting mechanism 200.

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

[0082] In some embodiments, the first transmission member 120 and the second transmission member 130 are both synchronous belt assemblies, and the synchronous belt assemblies include a driving wheel, a driven wheel, and a synchronous belt. In the first transmission member 120, the transmission ratio of the driving wheel to the driven wheel is 1:1, and in the second transmission member 130, the transmission ratio of the driving wheel to the driven wheel is 3:1.

[0083] An embodiment of the present application also provides a warp tying machine, comprising the knotting device of the above embodiment.

[0084] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A knotting device, characterized in that: The knotting device comprises: Driving mechanism; A knotting mechanism, driven to rotate by the driving mechanism, the knotting mechanism comprising a knotting tube, a clamp module, a yarn hook needle and a yarn push needle, the clamp module, the yarn hook needle and the yarn push needle are connected to the knotting tube and can slide along the axial direction of the knotting tube; and A cam mechanism is driven to rotate by the driving mechanism, the cam mechanism comprises a cam shaft, a clip module cam, a hook needle cam and a yarn pushing needle cam, the cam shaft comprises a first sub-shaft, a second sub-shaft and a clutch, the clip module cam is arranged on the first sub-shaft, the clip module cam can rotate with the first sub-shaft and drive the clip module to extend and retract along the axial direction of the knotting tube, the hook needle cam and the yarn pushing needle cam are arranged 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 along the axial direction of the knotting tube, and the yarn pushing needle cam can rotate with the second sub-shaft and drive the yarn pushing needle to extend and retract along the axial direction of the knotting tube; Among them, the knotting mechanism has a single knot tying mode and a double knot tying mode, and the clutch can separate the first sub-shaft from the second sub-shaft so that the first sub-shaft and the second sub-shaft can rotate relative to each other, thereby switching between the single knot tying mode and the double knot tying mode, or making the first sub-shaft and the second sub-shaft transmission connected.

2. The knotting device according to claim 1, characterized in that: The clutch comprises a first disc body arranged on the first sub-shaft, a second disc body arranged on the second sub-shaft and a pre-tightening member; The first disk body is provided with a first transmission part, and the second disk body is provided with a second transmission part. The second disk body can slide along the axial direction of the second sub-axis to make the first transmission part and the second transmission part transmission connected or separated. The preload part is used to make the second transmission part have a tendency to maintain 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 cooperating with the protrusion. The grooves are arranged in two groups. In the single knot tying mode, the protrusion cooperates with one group of the grooves for transmission, and in the double knot tying mode, the protrusion cooperates with the other group of the grooves for transmission.

4. The knotting device according to claim 1, characterized in that: In the single knot tying mode, the phase difference between the first sub-axis and the second sub-axis along the rotation direction is zero. In the double knot tying mode, the phase difference between the first sub-axis and the second sub-axis along the rotation direction is preferably 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 assembly and three groups of connecting assemblies, the sliding assembly includes a linear slide rail and three groups of sliders, the linear slide rail is arranged parallel to the cam shaft, the slider is slidably arranged on the linear slide rail, each of the connecting assemblies is respectively connected to a group of the sliders, and each of the connecting assemblies is respectively connected to the clip module, the yarn hooking needle and the yarn pushing needle; Wherein, the connecting assembly includes a guide needle, and guide grooves are provided on the clamp module cam, the yarn hook needle cam and the yarn push needle cam. The guide needle can cooperate with the guide groove to drive the clamp module, the yarn hook needle and the yarn push needle to slide axially along the knotting tube.

7. The knotting device according to any one of claims 1 to 4, characterized in that: The driving mechanism comprises a driving motor, a first transmission member and a second transmission member, wherein the first transmission member is drivingly connected between the driving motor and the knotting mechanism, and the second transmission member is drivingly connected between the driving motor and the cam mechanism; or The driving mechanism comprises a driving motor, a first transmission member and a second transmission member, wherein the first transmission member is drivingly connected between the driving motor and the cam mechanism, and the second transmission member is drivingly connected between the cam mechanism and the knotting mechanism; or The driving mechanism includes a driving motor, a first transmission member and a second transmission member. The first transmission member is drivingly connected between the driving motor and the knotting mechanism, and the second transmission member is drivingly connected between the knotting mechanism and the cam mechanism.

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

1.

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

1.

10. A warp tying machine, characterized in that: A knotting device comprising the knotting device according to any one of claims 1 to 9.

Images