Intelligent automatic knotting machine

Abstract

The utility model relates to the technical field of knot tying machine processing, in particular to an intelligent automatic knot tying machine, which comprises a yarn feeding mechanism, a control mechanism and a knot tying mechanism, the yarn picking mechanism is used for picking up the upper yarn and the lower yarn; the yarn clamping and positioning mechanism is arranged at the yarn output end of the yarn picking mechanism and used for fixing the upper yarn and the lower yarn and conveying the upper yarn and the lower yarn to a knotting position; the knotting mechanism is used for forming the free end of the upper yarn and the free end of the lower yarn into a yarn knot; and the thread knot detection mechanism is used for enabling the thread knot to pass through a set position so as to shift a detection block arranged on a thread knot moving path to move and judge the knotting result of the thread knot. And the yarn detection mechanism is used for performing double-warp detection / tension detection on the upper yarn and the lower yarn. And the broken yarn detection assembly is used for detecting broken yarn information of the yarn. And the image sensor is used for detecting double warp / nep / roving information of the yarns. According to the utility model, the new and old yarn knotting effect of the intelligent automatic knotting machine is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of knotting machine technology, and in particular to an intelligent automatic knotting machine. Background Technology

[0002] Automatic knotting machines can knot and connect the remaining old warp yarns on the loom and the new warp yarns on the warp beams ready to be loaded onto the loom one by one. Then, the knots are pulled past the stop pins, heddle eyes and reed teeth to the front of the machine for subsequent work. This avoids the tedious process of re-threading the warp. Using this method avoids manual knotting and has high production efficiency, especially when the fabric structure is complex.

[0003] In actual textile processes, inconsistent cutting motions of the new and old warp yarns may lead to improper alignment or cutting of the new and old warp yarns during knotting, thus affecting the knotting effect; improper tension settings of the new and old warp yarns (too high or too low tension) will also affect the knotting effect; when the yarn picker cannot effectively separate individual yarns, knotting failure will also occur.

[0004] Therefore, there is an urgent need for an intelligent automatic knotting machine that can detect and improve the knotting effect of new and old warp yarns. Utility Model Content

[0005] Therefore, this utility model provides an intelligent automatic knotting machine to overcome the problem that the knotting effect of new and old warp yarns in the existing automatic knotting machine is poor.

[0006] To achieve the above objectives, on the one hand, this utility model provides an intelligent automatic knotting machine, comprising:

[0007] A yarn feeding mechanism, which is used to tension and place several yarns arranged in a horizontal single layer, including an upper yarn frame and a lower yarn frame;

[0008] The yarn picking mechanism includes a first yarn picking assembly horizontally disposed on one side of the upper yarn frame for penetrating the upper yarn layer and picking up the upper yarn near the outermost side of the yarn picking mechanism, and a second yarn picking assembly horizontally disposed on one side of the lower yarn frame for penetrating the lower yarn layer and picking up the lower yarn near the outermost side of the yarn picking mechanism, wherein the first yarn picking assembly and the second yarn picking assembly are respectively disposed.

[0009] A yarn holding and positioning mechanism is provided at the yarn output end of the yarn picking mechanism to fix the upper and lower yarns picked up by the yarn picking mechanism and to convey the upper and lower yarns to the knotting position.

[0010] A knotting mechanism is used to clamp and knot the free ends of the cut upper and lower yarns to form a knot.

[0011] A knot detection mechanism is provided at the knot output end of the knotting mechanism. It is used to move a detection block located on the knot movement path by moving the knot through a set position to determine the knotting result. The detection block is located between the movement path of the upper yarn and the movement path of the lower yarn after knotting.

[0012] Furthermore, the first take-up assembly includes a take-up needle that moves along a preset direction and is disposed opposite to it, a first tension plate disposed above the take-up needle, and a first guide portion that is movably disposed between the take-up needle and the first limit portion;

[0013] The second take-up assembly includes a take-up needle that moves along a preset direction and is disposed opposite to a second limiting part, a second tension plate disposed above the take-up needle, and a second guide part that is movably disposed between the take-up needle and the second limiting part.

[0014] Furthermore, it also includes a yarn detection mechanism, which includes a first pressure sensor fixedly disposed on one side of the yarn feeding direction of the upward yarn picking needle for detecting the tension of the upper yarn and a second pressure sensor fixedly disposed on one side of the yarn feeding direction of the downward yarn picking needle for detecting the tension of the lower yarn, for performing double warp detection / tension detection on the upper and lower yarns.

[0015] Furthermore, the yarn holding and positioning mechanism includes a yarn presser arranged horizontally with the first yarn take-up assembly for pressing down the upper yarn and the lower yarn, and the upper surface of the yarn presser is provided with a groove for accommodating the upper yarn and the lower yarn.

[0016] Furthermore, the knotting mechanism includes a knotting tube arranged horizontally with the yarn presser for knotting the free ends of the upper yarn and the lower yarn, the knotting tube having a tightening needle for tightening the knot inside, and a clamp sleeved on the knotting tube and connected to the knotting tube.

[0017] The clamp includes a first clamping end, a second clamping end, and a first dividing end disposed at the symmetrical axis position between the first clamping end and the second clamping end. The first clamping end and the first dividing end are used to clamp the free end of the upper yarn, and the second clamping end and the first dividing end are used to clamp the free end of the lower yarn.

[0018] Furthermore, the knot detection mechanism includes:

[0019] A horizontal hollow guide groove is perpendicular to the yarn tensioning direction of the yarn holding and positioning mechanism. The horizontal hollow guide groove is located between the upper yarn and the lower yarn. The detection block reciprocates about an axis located on the side of the horizontal hollow guide groove near the knot. The rotating surface of the detection block passes through the hollow groove of the horizontal hollow guide groove.

[0020] A traction hook is located on the side of the horizontal hollow guide groove away from the rotation axis of the detection block, and the moving direction of the traction hook is parallel to the horizontal hollow guide groove.

[0021] A reset spring is provided on the side of the detection block near the rotation axis.

[0022] Furthermore, the knot detection mechanism also includes a position sensor for detecting the position state of the detection block and a counter module connected to the position sensor for recording the position change information of the detection block.

[0023] Furthermore, it also includes a yarn breakage detection component, comprising an upper yarn laser detector positioned near the upper yarn and a lower yarn laser detector positioned near the lower yarn, to detect yarn breakage information.

[0024] Furthermore, the yarn feeding mechanism also includes a drive assembly and a transmission assembly. The drive assembly is connected to the upper yarn frame and the lower yarn frame respectively through the transmission assembly, so as to realize the automatic displacement of the upper yarn frame and the lower yarn frame so that the upper yarn picking needle avoids the position of the upper yarn nip / roving and the lower yarn picking needle avoids the position of the lower yarn nip / roving.

[0025] The upper yarn frame is equipped with a first image sensor near the upper yarn picking needle to detect the upper yarn warp / needle / roving information, and the lower yarn frame is equipped with a second image sensor near the lower yarn picking needle to detect the lower yarn warp / needle / roving information.

[0026] Furthermore, the controller includes a memory for storing the upper yarn pressure information, the lower yarn pressure information, the upper yarn breakage information, the lower yarn breakage information, the detection block position change information, the upper yarn double warp / nip / roving information, and the lower yarn double warp / nip / roving information; an arithmetic unit for calculating several average values ​​of the upper yarn pressure and the lower yarn pressure respectively; and a logic judgment chip connected to the yarn feeding mechanism, the yarn detection mechanism, the knot detection mechanism, and the breakage detection component, and having a preset logic judgment program.

[0027] Compared with the prior art, the beneficial effect of this utility model is that a knot detection mechanism is set at the knot output end of the knot tying mechanism, and a detection block is set on the knot movement path. This allows each knot to be moved by the detection block when it is set to a certain position. By detecting the positional change of the detection block, the knot tying result can be accurately judged, realizing real-time monitoring of knot quality, significantly improving the degree of automation and detection accuracy, and further ensuring the quality of the fabric.

[0028] Furthermore, this utility model includes a yarn detection mechanism that performs double warp detection / tension detection on the upper and lower yarns respectively, thereby adjusting the tension of the upper and lower yarns and enabling the picking needle to effectively separate individual yarns, thus further improving the knotting results. This achieves real-time monitoring of knot quality, significantly improving the degree of automation and detection accuracy, and further ensuring fabric quality.

[0029] Furthermore, this utility model is equipped with a yarn breakage detection component, with an upper yarn laser detector positioned near the upper yarn and a lower yarn laser detector positioned near the lower yarn to detect yarn breakage information, and to detect yarn breakage information after knotting, ensuring that the knotted yarn can be smoothly threaded through the warp, thereby further realizing real-time monitoring of knot quality, significantly improving the degree of automation and detection accuracy, and further ensuring fabric quality.

[0030] Furthermore, this invention provides a first image sensor on the side of the upper yarn frame near the upper yarn picking needle, and a second image sensor on the side of the lower yarn frame near the lower yarn picking needle. These sensors detect the double warp / needle / roving information of the upper and lower yarns, triggering the drive and transmission components to move the upper or lower yarn frame accordingly. This avoids problematic yarn areas, ensuring the knotting machine can continue to operate normally, further improving the knotting effect, significantly enhancing automation and detection accuracy, and ensuring fabric quality. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the intelligent automatic knotting machine of this utility model;

[0032] Figure 2 This is a schematic diagram of the knot detection mechanism of the intelligent automatic knotting machine of this utility model;

[0033] Figure 3 This is a schematic diagram of the movement of the detection block in the knot detection mechanism of the intelligent automatic knotting machine of this utility model;

[0034] Figure 4 This is a schematic diagram of the yarn feeding mechanism and yarn picking mechanism of the intelligent automatic knotting machine of this utility model;

[0035] Figure 5 This is a schematic diagram of the upper yarn picking mechanism of the intelligent automatic knotting machine of this utility model;

[0036] Figure 6 This is a schematic diagram of the yarn picking mechanism of the intelligent automatic knotting machine of this utility model, showing the yarn picking out.

[0037] Figure 7 This is a schematic diagram of the yarn holding and positioning mechanism and the knotting mechanism of the intelligent automatic knotting machine of this utility model;

[0038] Figure 8 This is a schematic diagram of the knotting mechanism of the intelligent automatic knotting machine of this utility model.

[0039] Figure 9 This is a schematic diagram of the wire breakage detection component of the intelligent automatic knotting machine of this utility model;

[0040] Figure 10 This is a schematic diagram of the drive assembly and transmission assembly of the intelligent automatic knotting machine of this utility model;

[0041] In the diagram: 100, yarn feeding mechanism; 101, upper yarn frame; 102, lower yarn frame; 103, drive assembly; 104, transmission assembly; 105, first image sensor; 106, second image sensor; 200, yarn picking mechanism; 211, upper yarn picking needle; 212, first limiting part; 213, first tension plate; 214, first guide part; 215, upper yarn; 221, lower yarn picking needle; 222, second limiting part; 2 23, Second tension plate; 224, Second guide section; 225, Lower yarn; 300, Yarn holding and positioning mechanism; 301, Yarn presser; 302, Yarn groove; 400, Knotting mechanism; 401, Knotting tube; 402, Clamp; 4021, First clamping end; 4022, Second clamping end; 4023, First separating end; 403, Tightening needle; 500, Knot detection mechanism; 501, Horizontal hollow guide groove;

[0042] 502, Detection block; 503, Traction hook; 504, Return spring; 505, Position sensor; 506, Counter module; 600, Thread breakage detection component; 611, Upper yarn laser detector; 612, Lower yarn laser detector; 700, Yarn detection mechanism; 701, First pressure sensor; 702, Second pressure sensor; 800, Controller; 801, Memory; 802, Arithmetic unit; 803, Logic judgment chip. Detailed Implementation

[0043] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0044] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0046] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Please see Figure 1 The diagram shown is a structural schematic of the intelligent automatic knotting machine of this utility model. Specifically, this utility model provides an intelligent automatic knotting machine, characterized in that it includes:

[0048] The yarn feeding mechanism 1 is used to tension and place several yarns arranged in a horizontal single layer, including an upper yarn frame 101 and a lower yarn frame 102.

[0049] The yarn picking mechanism 200 includes a first yarn picking assembly horizontally disposed on one side of the upper yarn frame 101 for penetrating the upper yarn layer and picking up the upper yarn 215 near the outermost side of the yarn picking mechanism 200, and a second yarn picking assembly horizontally disposed on one side of the lower yarn frame 102 for penetrating the lower yarn layer and picking up the lower yarn 225 near the outermost side of the yarn picking mechanism 200. The first yarn picking assembly and the second yarn picking assembly are respectively disposed.

[0050] A yarn holding and positioning mechanism 300 is provided at the yarn output end of the yarn picking mechanism 200 to fix the upper yarn 215 and lower yarn 225 picked up by the yarn picking mechanism 200, and to convey the upper yarn 215 and lower yarn 225 to the knotting position.

[0051] The knotting mechanism 400 is used to clamp the free ends of the cut upper yarn 215 and lower yarn 225 and tie them together so that the free ends of the upper yarn 215 and lower yarn 225 form a knot.

[0052] A knot detection mechanism 500 is disposed at the knot output end of the knotting mechanism 400. It is used to move the detection block 502 located on the knot movement path by moving the knot through a set position to determine the knotting result. The detection block 502 is disposed between the movement path of the upper yarn 215 and the movement path of the lower yarn 225 after knotting.

[0053] This invention provides a knot detection mechanism 500 at the knot output end of the knotting mechanism 400, and a detection block 502 on the knot movement path. This allows each completed knot to be moved by the detection block 502 when it is in a set position. By detecting the positional changes of the detection block 502, the knotting result can be accurately judged, realizing real-time monitoring of knot quality, significantly improving the degree of automation and detection accuracy, and further ensuring fabric quality.

[0054] Specifically, the first take-up assembly includes an up-take-up needle 211 that moves along a preset direction and is disposed opposite to it, a first tension piece 213 disposed above the up-take-up needle 211, and a first guide part 214 disposed movably between the up-take-up needle 211 and the first limit part 212.

[0055] The second take-up assembly includes a take-up needle 221 that moves along a preset direction and is disposed opposite to the other, a second tension plate 223 disposed above the take-up needle 221, and a second guide portion 224 disposed between the take-up needle 221 and the second limit portion 222.

[0056] Specifically, it also includes a yarn detection mechanism 700, which includes a first pressure sensor 701 fixedly disposed on the yarn feeding direction side of the upper yarn picking needle 211 for detecting the tension of the upper yarn 215 and a second pressure sensor 702 fixedly disposed on the yarn feeding direction side of the lower yarn picking needle 221 for detecting the tension of the lower yarn 225, for performing double warp detection / tension detection on the upper yarn 215 and the lower yarn 225.

[0057] Specifically, the yarn feeding mechanism also includes a first motor for tension control of the upper yarn 215 and a second motor for tension control of the lower yarn 215. The first motor is connected to the tensioning wheel on the upper yarn frame 101, and the second motor is connected to the tensioning wheel on the lower yarn frame 102.

[0058] It is understandable that the yarn picked out by the knotting machine must be a single yarn. Therefore, the upper yarn 215 and the lower yarn 225 are subjected to double warp testing respectively. At the same time, since the knotting machine requires the upper yarn 215 and the lower yarn 225 to be single yarns during the knotting process, the yarn tension can be precisely controlled and adjusted by detecting the yarn tension. This allows the machine to determine whether the yarn tension is qualified by detecting the yarn tension and to determine the number of yarns by the change in tension. Therefore, the tension of the upper yarn 215 and the lower yarn 225 are tested respectively. The tension of the upper yarn 215 can be adjusted by controlling the upper tensioning wheel with the first motor or the lower tensioning wheel with the second motor.

[0059] Understandably, the first yarn take-up assembly can pick up a single yarn from the upper yarn layer of the upper yarn rack 101 and send it to the yarn detection mechanism 700, where double warp detection / tension detection is performed by the first pressure sensor 701. Similarly, the second yarn take-up assembly can pick up a single yarn from the lower yarn layer of the lower yarn rack 102 and send it to the yarn detection mechanism 700, where double warp detection / tension detection is performed by the second pressure sensor 702. After double warp detection / tension detection and cutting of the upper yarn 215 and lower yarn 225 respectively, the yarn can be output to the yarn holding and positioning mechanism 300.

[0060] In practice, since the tension of double warp (double yarn) is different from that of single yarn, tension detection can determine whether double warp exists in the yarn. The sensor for double warp detection / tension detection and the sensor position can be selected and determined according to the actual situation. As long as double warp detection / tension detection of the upper yarn 215 and the lower yarn 225 can be achieved, it will not be elaborated here.

[0061] This utility model sets up a yarn detection mechanism 700 to perform double warp detection / tension detection on the upper yarn 215 and the lower yarn 225 respectively, thereby adjusting the tension of the yarn on the upper yarn frame 101 and the lower yarn 225 respectively, and enabling the yarn pick needle to effectively separate individual yarns, thereby further improving the knotting result, realizing real-time monitoring of knot quality, significantly improving the degree of automation and detection accuracy, and further ensuring fabric quality.

[0062] Specifically, the yarn holding and positioning mechanism 300 includes a yarn presser 301 arranged horizontally with the first yarn take-up assembly to press down the upper yarn 215 and the lower yarn 225. The upper surface of the yarn presser 301 is provided with a yarn groove 302 for accommodating the upper yarn 215 and the lower yarn 225.

[0063] It is understood that during the rotation of the yarn presser 301, the upper yarn 215 and the lower yarn 225 are pressed into the yarn groove 302 of the yarn presser 301 respectively, so as to fix the upper yarn 215 and the lower yarn 225 picked up by the yarn picking mechanism 200, and convey the upper yarn 215 and the lower yarn 225 to the knotting position.

[0064] Specifically, the knotting mechanism 400 includes a knotting tube 401 arranged horizontally with the yarn presser 301 for knotting the free ends of the upper yarn 215 and the lower yarn 225. The knotting tube 401 is provided with a tightening needle 403 for tightening the knot, and a clamp 402 sleeved on the knotting tube 401 and connected to the knotting tube 401.

[0065] The clamp 402 includes a first clamping end 4021, a second clamping end 4022, and a first separating end 4023 disposed at the symmetrical axis position between the first clamping end 4021 and the second clamping end 4022. The first clamping end 4021 and the first separating end 4023 are used to clamp the free end of the upper yarn 215, and the second clamping end 4022 and the first separating end are used to clamp the free end of the lower yarn 225.

[0066] It is understood that while the first clamping end 4021 and the first separating end 4023 of the clamp 402 clamp the free end of the upper yarn 215 and the second clamping end 4022 and the first separating end of the clamp 402 clamp the free end of the lower yarn 225, the clamp 402 rotates around the knotting tube 401 to tie a knot. The tightening needle 403 extends out from the knotting tube 401, receives the knotted thread, retracts into the knotting tube 401, and tightens the knot to form a knot head.

[0067] Specifically, the knot detection mechanism 500 includes:

[0068] A horizontal hollow guide groove is perpendicular to the yarn tensioning direction of the yarn holding and positioning mechanism 300. The horizontal hollow guide groove is located between the upper yarn 215 and the lower yarn 225. The detection block 502 reciprocates around an axis located near the knot side of the horizontal hollow guide groove. The rotating surface of the detection block 502 passes through the hollow groove of the horizontal hollow guide groove.

[0069] The traction hook 503 is located on the side of the horizontal hollow guide groove away from the rotation axis of the detection block 502, and the moving direction of the traction hook 503 is parallel to the horizontal hollow guide groove.

[0070] A reset spring 504 is provided on the side of the detection block 502 near the rotating shaft.

[0071] Understandably, knotting machines are particularly prone to slippage during the knotting process. A detection block 502 is used to detect the knots formed after the upper yarn 215 and the lower yarn 225 are knotted. After the knotting machine knots, the traction hook 503 hooks the knotted upper yarn 215 and lower yarn 225 and moves them in a set direction. During this movement, the upper yarn 215 and lower yarn 225 pass the detection block 502. If a knot is formed, the detection block 502 will rotate under the influence of the upper yarn 215 and lower yarn 225 and reset under the action of the return spring 504; if no knot is formed, the detection block 502 will not rotate.

[0072] Specifically, the knot detection mechanism 500 further includes a position sensor 505 for detecting the position state of the detection block 502 and a counter module 506 connected to the position sensor 505 for recording position change information of the detection block 502.

[0073] It is understandable that the success or failure of knotting can be detected by detecting the position status of the detection block 502, and the position change information of the detection block 502 is recorded by the counter module 506.

[0074] In practice, the counter module 506 can detect the number of successful knot tyings / the number of failed knot tyings. The specific recording content can be adjusted according to the actual situation, which will not be elaborated here.

[0075] Specifically, it also includes a yarn breakage detection component 600, which includes an upper yarn laser detector 611 disposed near the upper yarn 215 and a lower yarn laser detector 612 disposed near the lower yarn 225 to detect yarn breakage information.

[0076] In practice, the positions of the upper yarn laser detector 611 and the lower yarn laser detector 612 are not specifically limited and can be adjusted according to the actual situation, as long as the yarn breakage detection can be achieved. Further details are omitted here.

[0077] In a specific embodiment, when the traction hook 503 hooks the upper yarn 215 and the lower yarn 225, the lower yarn 225 or the upper yarn 215 may break due to excessive pulling force of the traction hook 503. Therefore, an upper yarn laser detector 611 is set at the lower part of the knotted and fixed end of the upper yarn 215, and a lower yarn laser detector 612 is set at the lower part of the knotted and fixed end of the lower yarn 225. The upper yarn 215 that falls after breaking can be sensed by the upper yarn laser detector 611, and the lower yarn 225 that falls after breaking can be sensed by the lower yarn laser detector 612.

[0078] In another specific embodiment, the upper yarn laser detector 611 can also be installed on the upper yarn frame 101 near the upper yarn picking needle 211 to detect the breakage information of the upper yarn 215 broken by the upper yarn picking needle 211. The lower yarn laser detector 612 can also be installed on the lower yarn frame 102 near the lower yarn picking needle 221 to detect the breakage information of the lower yarn 225 broken by the lower yarn picking needle 221. In addition, laser detectors can be installed at the breakage locations of the upper yarn 215 and lower yarn 225 that are broken for other reasons, which will not be elaborated here.

[0079] In implementation, the upper yarn laser detector 611 can be connected to a counter module to record the number of times the upper yarn 215 breaks and falls, and the lower yarn laser detector 612 can be connected to a counter module to record the number of times the lower yarn 225 breaks and falls. The counter module can be selected according to the actual scenario, and usually a counter with a digital display can be selected.

[0080] This utility model includes a yarn breakage detection component 600, with an upper yarn laser detector 611 positioned above the upper yarn 215 and a lower yarn laser detector 612 positioned below the lower yarn 225 to detect yarn breakage information, including breakage information of the yarn after knotting. This ensures that the knotted yarn can be smoothly threaded through the warp, thereby further realizing real-time monitoring of knot quality, significantly improving the degree of automation and detection accuracy, and further ensuring fabric quality.

[0081] Specifically, the yarn feeding mechanism 1 further includes a drive assembly 103 and a transmission assembly 104. The drive assembly 103 is connected to the upper yarn frame 101 and the lower yarn frame 102 respectively through the transmission assembly 104, so as to realize the automatic displacement of the upper yarn frame 101 and the lower yarn frame 102 so that the upper yarn picking needle 211 avoids the cotton knot / roving position of the upper yarn 215 and the lower yarn picking needle 221 avoids the cotton knot / roving position of the lower yarn 225.

[0082] The upper yarn frame 101 is provided with a first image sensor 105 near the upper yarn picking needle 211 to detect the double warp / nip / roving information of the upper yarn 215, and the lower yarn frame 102 is provided with a second image sensor 106 near the lower yarn picking needle 221 to detect the double warp / nip / roving information of the lower yarn 225.

[0083] It is understandable that when the upper yarn 215 or the lower yarn 225 has roving / neps, the up-picking needle 211 and the down-picking needle 221 will not be able to pick up the yarn, and the knotting machine will not be able to knot. Therefore, a first image sensor 105 is set on the side of the upper yarn frame 101 near the up-picking needle 211. If a roving / neps is detected on the upper yarn 215, the drive component 103 drives the transmission component 104. The transmission component 104 drives the upper yarn frame 101 to move so that the up-picking needle 211 avoids the roving / neps position on the upper yarn 215. A second image sensor 106 is provided on the side of the lower yarn frame 102 near the lower yarn picking needle 221. If a nipple / roving is detected on the lower yarn 225, the drive component 103 drives the transmission component 104. The transmission component 104 moves the lower yarn frame 102 so that the lower yarn picking needle 221 avoids the nipple / roving position of the lower yarn 225.

[0084] Understandably, when the yarn picking mechanism is used to pick up a single upper yarn and a single lower yarn, if the upper yarn 215 or the lower yarn 225 is double-warp (two yarns are picked up), the first image sensor 105, if it detects that two upper yarns 215 are present, drives the transmission component 104 through the drive component 103. The transmission component 104 drives the upper yarn frame 101 to move so that the upper yarn picking needle 211 picks up the yarn again. If the second image sensor 106 detects that the lower yarn 225 is double-warp (two yarns are picked up), it drives the transmission component 104 through the drive component 103. The transmission component 104 drives the lower yarn frame 102 to move so that the upper yarn picking needle 211 picks up the yarn again.

[0085] It is understood that the first image sensor 105 can also detect the absence of yarn on the upper yarn frame 101, and the second image sensor 106 can also detect the absence of yarn on the lower yarn frame 102.

[0086] In practice, the drive component 103 can be a motor, and the transmission component 104 can be a gear, belt, etc. There are no specific limitations here, as long as the drive component 103 and the transmission component 104 can move the positions of the upper yarn frame 101 and the lower yarn frame 102. Further details will not be provided here.

[0087] In implementation, the sensors for double warp / neps / roves and their positions can be selected and determined according to the actual situation, as long as they can detect double warp / neps / roves phenomena on the upper yarn 215 and the lower yarn 225. Further details are omitted here. In implementation, a through-beam edge detection sensor can be used for detection.

[0088] This invention features a first image sensor 105 on the upper yarn frame 101 near the upper yarn picking needle 211, and a second image sensor 106 on the lower yarn frame 102 near the lower yarn picking needle 221. These sensors detect the double warp / needle / roving information of the upper yarn 215 and lower yarn 225, triggering the drive assembly 103 and transmission assembly 104 to move the upper yarn frame 101 or lower yarn frame 102 accordingly. This avoids problematic yarn areas, ensuring the knotting machine can continue to operate normally, further improving the knotting effect, significantly enhancing automation and detection accuracy, and ensuring fabric quality.

[0089] Specifically, the controller 800 includes a memory 801 for storing the pressure information of the upper yarn 215, the pressure information of the lower yarn 225, the breakage information of the upper yarn 215, the breakage information of the lower yarn 225, the position change information of the detection block 502, the double warp / knot / roving information of the upper yarn 215, and the double warp / knot / roving information of the lower yarn 225; an arithmetic unit 802 for calculating the average pressure of the plurality of upper yarns 215 and the average pressure of the lower yarn 225 respectively; and a logic judgment chip 803 connected to the yarn feeding mechanism 1, the yarn detection mechanism 700, the knot detection mechanism 500, and the breakage detection component 600 and having a preset logic judgment program.

[0090] Understandably, the logic judgment chip 803 judges the yarn pressure information, yarn breakage information, double warp / nip / roving information, and position change information of the detection block 502 respectively, so as to drive the knotting machine to take corresponding measures.

[0091] In implementation, the controller 800 may also include an alarm module, which is connected to the logic judgment chip 803. The alarm module issues an alarm by obtaining the judgment result of the logic judgment chip 803, reminding the staff of the type of malfunction of the knotting machine. The specific functions of the alarm module can be adjusted according to the actual situation, which will not be elaborated here.

[0092] Specific workflow:

[0093] Yarn picking: After the first tension plate 213 presses down on the upper yarn layer, the first guide portion 214 rotates towards the upper yarn layer while pressing down on the first limiting portion 212. Simultaneously, a single upper yarn 215 enters the groove of the first guide portion 214. The picking needle 211 moves towards the first guide portion 214, simultaneously moving the first guide portion 214 and the single upper yarn 215 away from the upper yarn layer. As the first guide portion 214 moves away from the upper yarn layer, the first limiting portion 212 returns to its initial position. After the second tension plate 223 presses down on the lower yarn layer, the second guide portion 224 rotates towards the lower yarn layer while pressing down on the second limiting portion 222. Simultaneously, a single lower yarn 225 enters the groove of the second guide portion 224. The picking needle 221 moves towards the second guide portion 224, simultaneously moving the second guide portion 224 and the single lower yarn 225 away from the lower yarn layer. As the second guide portion 224 moves away from the lower yarn layer, the second limiting portion 222 returns to its initial position.

[0094] In one specific embodiment, (double warp detection / tension detection) is performed: The first yarn take-up assembly picks up the upper yarn 215 from the upper yarn layer of the upper yarn rack 101 and sends the picked-up upper yarn 215 to the yarn detection mechanism 700, where double warp detection / tension detection is performed by the first pressure sensor 701. The second yarn take-up assembly picks up the lower yarn 225 from the lower yarn layer of the lower yarn rack 102 and sends the picked-up lower yarn 225 to the yarn detection mechanism 700, where double warp detection / tension detection is performed by the second pressure sensor 702. Based on this, the number of upper yarns 215 and lower yarns 225 picked up / the tension of the upper yarn 215 and lower yarn 225 are calculated. Subsequently, the controller 800 performs logical judgment and alarm. If the controller 800 receives double warp information, it controls the first and second yarn take-up components to re-take the yarn. If the controller 800 receives tension information, it determines that the tension of the upper yarn 215 or the lower yarn 225 is too high / too low, and transmits a control signal to the first or second motor. The first motor adjusts the tension of the upper yarn 215 by controlling the upper tensioning wheel, and the second motor adjusts the tension of the lower yarn 225 by controlling the lower tensioning wheel. The upper yarn 215 and lower yarn 225, after double warp detection / tension detection, can be conveyed to the yarn holding and positioning mechanism 300.

[0095] In another specific embodiment, (double warp detection) is performed: when the yarn picking mechanism is used to pick up a single upper yarn and a single lower yarn, when the upper yarn 215 or the lower yarn 225 exhibits a double warp (two yarns picked up), if the first image sensor 105 detects the presence of two upper yarns 215, it drives the transmission component 104 through the drive component 103. The transmission component 104 moves the upper yarn frame 101 to allow the upper yarn picking needle 211 to pick up yarn again. If the second image sensor 106 detects a double warp (two yarns picked up) in the lower yarn 225, it drives the transmission component 104 through the drive component 103. The transmission component 104 moves the lower yarn frame 102 to allow the upper yarn picking needle 211 to pick up yarn again.

[0096] Knotting: After the upper yarn 215 and the lower yarn 225 are picked out and cut, the yarn presser 301 in the yarn holding and positioning mechanism 300 rotates to the positions of the upper yarn 215 and the lower yarn 225. During the rotation of the yarn presser 301, the upper yarn 215 and the lower yarn 225 enter the yarn groove 302 of the yarn presser 301, and the positions of the upper yarn 215 and the lower yarn 225 are fixed by the yarn groove 302, and the upper yarn 215 and the lower yarn 225 are conveyed to the knotting position. During the rotation of the yarn clamp on the knotting tube 401, the upper yarn 215 enters the first clamping end 4021 and the first separating end 4023, and the first clamping end 4021 and the first separating end 4023 clamp the upper yarn 215. The lower yarn 225 enters the second clamping end 4022 and the first separating end 4023. The second clamping end 4022 and the first separating end 4023 clamp the lower yarn 225. Under the rotation (first rotation) of the clamp 402, the upper yarn 215 and the lower yarn 225 are gathered and wrapped around the neck of the knotting tube 401. Then, the clamp 402 rotates again (the second rotation). The clamp 402, carrying the upper yarn 215 and the lower yarn 225, moves along the knotting tube 401 towards the upper yarn frame 101 and the lower yarn frame 102. At the same time, the tightening needle 403 extends out from the knotting tube 401. When the clamp rotates to below the knotting tube 401 again, the clamp hands the upper yarn 215 and the lower yarn 225 to the tightening needle 403. Then, the tightening needle 403 retracts into the knotting tube 401. Meanwhile, the clamp 402 moves a set distance away from the upper yarn frame 101 and the lower yarn frame 102 along the knotting tube 401 and rotates again to clamp the upper yarn 215 and the lower yarn 225 for the next knotting.

[0097] Knot detection: When the knotting machine successfully knots, the traction hook 503 will hook the knotted upper yarn 215 and lower yarn 225 and move them in a set direction. During the movement, the upper yarn 215 and lower yarn 225 in the horizontal hollow guide groove will pass the detection block 502. The knot touches the detection block 502, thereby driving the detection block 502 to move. After the knot pulls the detection block 502 to the position sensor 505, it will disengage from the detection block 502. Under the action of the return spring 504, the detection block 502 will return to its initial position. The position sensor 505 will detect the positional change caused by the movement of the detection block 502. When the knotting machine fails to knot, no knot will be formed. The detection block 502 will not be moved by the yarn when the traction hook 503 drives the upper yarn 215 and lower yarn 225, and therefore the position sensor 505 will not detect the positional change of the detection block 502. The counter module 506 records the number of times the position sensor 505 provides feedback to the detection block 502 when there is no position change, thereby obtaining the number of times the yarn has failed to be knotted. The controller 800 then performs logical judgment and alarm.

[0098] Thread breakage detection: When the traction hook 503 catches the knotted upper yarn 215 and lower yarn 225, if the upper yarn 215 or lower yarn 225 breaks due to excessive pulling force of the traction hook 503, the upper yarn 215 will fall and pass through the upper yarn laser detector 611. After the upper yarn laser detector 611 senses the falling upper yarn 215, the counter module 506 connected to the upper yarn laser detector 611 records the number of times the upper yarn 215 falls. After the lower yarn 225 breaks, it will fall and pass through the lower yarn laser detector 612. After the lower yarn laser detector 612 senses the falling lower yarn 225, the counter module 506 connected to the lower yarn laser detector 612 records the number of times the lower yarn 225 falls, and the controller 800 performs logical judgment and alarm.

[0099] Neps / Roving Detection: When the first image sensor 105 detects a neps / roving on the upper yarn 215, the drive assembly 103 drives the transmission assembly 104, which in turn moves the upper yarn frame 101 to move the up-picking needle 211 away from the neps / roving position on the upper yarn 215. When the second image sensor 106 detects a neps / roving on the lower yarn 225, the drive assembly 103 drives the transmission assembly 104, which in turn moves the lower yarn frame 102 to move the down-picking needle 221 away from the neps / roving position on the lower yarn 225.

[0100] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An intelligent automatic knotting machine, characterized in that, include: A yarn feeding mechanism, which is used to tension and place several yarns arranged in a horizontal single layer, including an upper yarn frame and a lower yarn frame; The yarn picking mechanism includes a first yarn picking assembly horizontally disposed on one side of the upper yarn frame for penetrating the upper yarn layer and picking up the upper yarn near the outermost side of the yarn picking mechanism, and a second yarn picking assembly horizontally disposed on one side of the lower yarn frame for penetrating the lower yarn layer and picking up the lower yarn near the outermost side of the yarn picking mechanism, wherein the first yarn picking assembly and the second yarn picking assembly are respectively disposed. A yarn holding and positioning mechanism is provided at the yarn output end of the yarn picking mechanism to fix the upper and lower yarns picked up by the yarn picking mechanism and to convey the upper and lower yarns to the knotting position. A knotting mechanism is used to clamp and knot the free ends of the cut upper and lower yarns to form a knot. A knot detection mechanism is provided at the knot output end of the knotting mechanism. It is used to move a detection block located on the knot movement path by moving the knot through a set position to determine the knotting result. The detection block is located between the movement path of the upper yarn and the movement path of the lower yarn after knotting.

2. The intelligent automatic knotting machine according to claim 1, characterized in that, The first take-up assembly includes an up-take-up needle that moves along a preset direction and is disposed opposite to it, a first tension plate disposed above the up-take-up needle, and a first guide portion that is movably disposed between the up-take-up needle and the first limit portion; The second take-up assembly includes a take-up needle that moves along a preset direction and is disposed opposite to a second limiting part, a second tension plate disposed above the take-up needle, and a second guide part that is movably disposed between the take-up needle and the second limiting part.

3. The intelligent automatic knotting machine according to claim 2, characterized in that, It also includes a yarn detection mechanism, which includes a first pressure sensor fixedly disposed on one side of the yarn feeding direction of the upward yarn picking needle for detecting the tension of the upper yarn and a second pressure sensor fixedly disposed on one side of the yarn feeding direction of the downward yarn picking needle for detecting the tension of the lower yarn, for performing double warp detection / tension detection on the upper and lower yarns.

4. The intelligent automatic knotting machine according to claim 2, characterized in that, The yarn holding and positioning mechanism includes a yarn presser arranged horizontally with the first yarn take-up assembly to press down the upper yarn and the lower yarn. The upper surface of the yarn presser is provided with a groove for accommodating the upper yarn and the lower yarn.

5. The intelligent automatic knotting machine according to claim 4, characterized in that, The knotting mechanism includes a knotting tube arranged horizontally with the yarn presser for knotting the free ends of the upper yarn and the lower yarn. The knotting tube is provided with a tightening needle for tightening the knot, and a clamp sleeved on the knotting tube and connected to the knotting tube. The clamp includes a first clamping end, a second clamping end, and a first dividing end disposed at the symmetrical axis position between the first clamping end and the second clamping end. The first clamping end and the first dividing end are used to clamp the free end of the upper yarn, and the second clamping end and the first dividing end are used to clamp the free end of the lower yarn.

6. The intelligent automatic knotting machine according to claim 4, characterized in that, The knot detection mechanism includes: A horizontal hollow guide groove is perpendicular to the yarn tensioning direction of the yarn holding and positioning mechanism. The horizontal hollow guide groove is located between the upper yarn and the lower yarn. The detection block reciprocates about an axis located on the side of the horizontal hollow guide groove near the knot. The rotating surface of the detection block passes through the hollow groove of the horizontal hollow guide groove. A traction hook is located on the side of the horizontal hollow guide groove away from the rotation axis of the detection block, and the moving direction of the traction hook is parallel to the horizontal hollow guide groove. A reset spring is provided on the side of the detection block near the rotation axis.

7. The intelligent automatic knotting machine according to claim 6, characterized in that, The knot detection mechanism also includes a position sensor for detecting the position status of the detection block and a counter module connected to the position sensor for recording the position change information of the detection block.

8. The intelligent automatic knotting machine according to claim 1, characterized in that, It also includes a yarn breakage detection component, comprising an upper yarn laser detector positioned near the upper yarn and a lower yarn laser detector positioned near the lower yarn, to detect yarn breakage information.

9. The intelligent automatic knotting machine according to claim 1, characterized in that, The yarn feeding mechanism further includes a drive assembly and a transmission assembly. The drive assembly is respectively arranged on one side of the yarn picking needle through the transmission assembly to realize the automatic shifting of the upper yarn and the lower yarn so that the upper yarn picking needle avoids the position of the upper yarn nip / roving and the lower yarn picking needle avoids the position of the lower yarn nip / roving. The upper yarn frame is equipped with a first image sensor near the upper yarn picking needle to detect the upper yarn warp / needle / roving information, and the lower yarn frame is equipped with a second image sensor near the lower yarn picking needle to detect the lower yarn warp / needle / roving information.

10. The intelligent automatic knotting machine according to claim 1, characterized in that, It also includes a controller, which includes a memory for storing the upper yarn pressure information, the lower yarn pressure information, the upper yarn breakage information, the lower yarn breakage information, the detection block position change information, the upper yarn double warp / nip / roving information, and the lower yarn double warp / nip / roving information; an arithmetic unit for calculating several average values ​​of the upper yarn pressure and the lower yarn pressure respectively; and a logic judgment chip connected to the yarn feeding mechanism, the yarn detection mechanism, the knot detection mechanism, and the breakage detection component, and having a preset logic judgment program.

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