A conductive yarn break contact detection positioning mechanism

Abstract

The application relates to a conductive yarn broken contact detection positioning mechanism, which comprises a detection table, power rollers for conveying yarn are arranged on both sides of the detection table, and belongs to the technical field of conductive yarn broken contact detection. The conductive yarn broken contact detection positioning mechanism integrates quick on-off screening and accurate positioning functions, firstly, quick 'rough detection' is carried out through a moving contact type loop formed by a first detection wheel and a second detection wheel, when the yarn runs, the prompt lamp integrated on the intermittent contact convex end can intuitively and instantly display the conduction state of a large section of the yarn, and the suspicious section with a broken point can be efficiently screened out, once an abnormality is found, a 'fine detection' system formed by a driving cylinder and an array type conductive needle is started immediately, and the suspicious section is detected in millimeter level accuracy in a point-to-point mode, so that the detection efficiency is ensured, and accurate positioning of the broken point is realized.

Description

Technical Field

[0001] This invention relates to the field of conductive yarn breakage detection technology, specifically a conductive yarn breakage detection and positioning mechanism. Background Technology

[0002] Conductive yarns are core materials in fields such as smart textiles, flexible electronics, and medical sensors, and the continuity and reliability of their conductivity are crucial. During production, weaving, or use, yarns may develop minute breaks or resistance anomalies due to stretching, friction, or internal defects. These defects can directly lead to the failure of the entire circuit or sensor network. Therefore, comprehensive break detection and precise location of conductive yarns after production or before use are critical steps to ensure the quality of the final product.

[0003] Existing conductive yarn detection technologies mainly fall into two categories: one is overall detection based on resistance measurement, which determines whether the yarn is conductive by measuring the resistance value of the entire yarn section, but this method cannot pinpoint the exact location of the break; the other is point-by-point detection using moving probes or scanning electrodes, which can locate the break, but the detection speed is extremely slow and difficult to apply to the online detection needs of long-distance, continuous production. Furthermore, existing detection devices are often structurally complex, with insufficient reliability in yarn clamping and contact, prone to misjudgment, and lack an intuitive and rapid defect indication mechanism.

[0004] Therefore, there is an urgent need in this field for a conductive yarn breakage detection and positioning mechanism that can combine rapid online coarse inspection with precise breakage location, and has a reliable structure and intuitive indication. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a conductive yarn breakage contact detection and positioning mechanism, which solves the aforementioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a conductive yarn breakage detection and positioning mechanism, comprising a detection platform, power rollers for conveying yarn are driven on both sides of the detection platform, a limiting frame for limiting the yarn is fixedly connected to the surface of the detection platform, a side plate is fixedly connected to the side of the detection platform, a first bracket and a second bracket are fixedly connected to the surface of the side plate respectively, a first detection wheel driven by a motor is rotatably connected to the surface of the first bracket, and a second detection wheel driven by a motor is rotatably connected to the surface of the second bracket; The surface of the first detection wheel has multiple protruding ends arranged in a ring array. An indicator light is fixedly connected to the surface of each protruding end. The surface of each protruding end has an inner groove adapted to the yarn. The inner cavity of the inner groove is provided with multiple pressing contacts. The surface of the second detection wheel has multiple metal protrusions. The first and second detection wheels are connected by a connecting mechanism, which includes a fixing frame fixed to the first and second supports respectively. An adjusting rod is threaded to one side of the fixing frame, and a conductive sheet is fixed to one end of the fixing frame via a return spring. One end of the adjusting rod abuts against one side of the conductive sheet, and the other side of the conductive sheet abuts against the surfaces of the first and second detection wheels respectively. The two conductive sheets are connected by a first wire. During use, the yarn is conveyed by a power roller. During conveying, the first and second detection wheels rotate, and the second detection wheel continuously contacts the yarn. When the yarn comes into contact with the first detection wheel, the protruding end of the rotating surface intermittently contacts the yarn, forming a DC circuit. With continuous power supply, the indicator light on the protruding end illuminates to indicate a break in the yarn. When the indicator light goes out, a break in the yarn is detected. The drive cylinder is activated to move the motion frame, causing the conductive needle to pierce into the yarn. Through the conductive plate, a DC circuit is formed with the second detection wheel for detection. The indicator light at the corresponding conductive needle illuminates, while the light at the break point remains off, quickly locating the break point. This allows for rapid coarse detection of a large area of ​​yarn. Once a break point is confirmed, fine detection is performed to quickly locate the break point.

[0007] As a further aspect of the present invention: the first detection wheel, the protruding end, the conductive sheet, the wire, and the second detection wheel and the yarn form a DC circuit.

[0008] As a further aspect of the present invention: a driving cylinder is fixedly connected to one side of the limiting frame, a moving frame is fixedly connected to one end of the piston rod of the driving cylinder, a plurality of arrayed conductive pins are fixedly connected to one side of the moving frame, the moving frame is electrically connected to the conductive sheet on the second detection wheel through a second wire, a plurality of indicator lights corresponding one-to-one with the conductive pins are electrically connected to the surface of the moving frame, and each of the conductive pins is directly connected to the second wire through a shunt line.

[0009] As a further aspect of the present invention, the distance between the first detection wheel and the second detection wheel is greater than the distance between the two protruding ends.

[0010] As a further aspect of the present invention: the surface of the second detection wheel is provided with a groove adapted to the yarn, and the bottom is in contact with the surface of the limiting frame.

[0011] Compared with the prior art, the present invention has the following advantages: This system achieves a highly efficient two-step detection process: "coarse screening - fine detection." It innovatively integrates rapid continuity screening with precise positioning. First, a rapid "coarse screening" is performed via a moving contact loop consisting of a first and second detection wheel. During yarn operation, indicator lights integrated into the intermittently contacting protruding ends visually and instantly display the continuity status of large sections of the yarn, efficiently screening out suspicious sections with breaks. Once an anomaly is detected, a "fine detection" system, consisting of a drive cylinder and an array of conductive needles, is activated to perform millimeter-level precision point-to-point detection on the suspicious sections, thus ensuring both detection efficiency and precise breakpoint location.

[0012] It provides an intuitive and reliable online visual cues and automatic positioning mechanism: In the coarse inspection stage, the circuit status is directly linked to the visual cues. An indicator light integrated on the protruding end is connected in series with the detection circuit; the corresponding light will only illuminate when the yarn segment contacted by the protruding end has good conductivity. This design allows operators or the vision system to quickly determine the presence and approximate area of ​​yarn defects simply by observing the on / off pattern of the light on the first detection wheel, without relying on complex instrument readings; the anomaly response is extremely intuitive. In the fine inspection stage, each conductive needle is equipped with an independent indicator light; the status of the needle contact indicator lights on both sides of the break point changes, thus accurately locating which two conductive needles the break point is between.

[0013] The reliability of the detection contact and the stability of the circuit are ensured: a dual-wheel rolling contact detection system is adopted. The second detection wheel provides a continuous and stable electrical contact point, while the protruding end of the first detection wheel is designed with an inner groove and pressing contact that adapts to the yarn. During rotation, it can periodically "engage" with the yarn to form a reliable electrical connection. During fine detection, the conductive needle actively pierces into the yarn under the drive of a cylinder, ensuring a stable electrical connection with the internal conductive fibers and avoiding poor contact caused by surface oxide layers or contamination. The adjusting rod in the connecting mechanism can finely adjust the pressure of the conductive plate on the detection wheel to ensure continuous and good brush contact.

[0014] Compact structure, high degree of automation, and easy integration: The entire mechanism integrates yarn guiding, detection, positioning, and indication functions. The switching between coarse and fine detection is automatically completed through pneumatic and electrical control. This mechanism can be directly installed between the take-up and unwinding devices of the yarn production line or at the front end of the braiding machine to achieve online real-time detection and positioning without interrupting the production process or transferring materials, greatly improving production efficiency and automation level. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the limiting frame of the present invention; Figure 3 This is a schematic diagram of the protruding end of the present invention; Figure 4 This is a top view of the structure of the fixing frame of the present invention.

[0016] In the diagram: 1. Detection platform; 2. Side plate; 3. Limiting frame; 4. First bracket; 5. Second bracket; 6. First detection wheel; 7. Protruding end; 8. Second detection wheel; 9. Inner groove; 10. Pressing contact; 11. First wire; 12. Fixing frame; 13. Adjusting rod; 14. Conductive sheet; 15. Return spring; 16. Drive cylinder; 17. Second wire; 18. Moving frame; 19. Connecting rod; 21. Indicator light; 22. Conductive needle. Detailed Implementation

[0017] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0018] Please see Figure 1-4 The present invention provides a technical solution: a conductive yarn break contact detection and positioning mechanism, including a detection platform 1, with power rollers for conveying yarn on both sides of the detection platform 1, a limiting frame 3 for limiting the yarn fixedly connected to the surface of the detection platform 1, a side plate 2 fixedly connected to the side of the detection platform 1, a first bracket 4 and a second bracket 5 fixedly connected to the surface of the side plate 2 respectively, a first detection wheel 6 driven by a motor rotatably connected to the surface of the first bracket 4, and a second detection wheel 8 driven by a motor rotatably connected to the surface of the second bracket 5. The surface of the first detection wheel 6 is provided with multiple protruding ends 7 arranged in a ring array. An indicator light is fixedly connected to the surface of the protruding end 7. The surface of the protruding end 7 is provided with an inner groove 9 adapted to the yarn. The inner cavity of the inner groove 9 is provided with multiple pressing contacts 10. The surface of the second detection wheel 8 is provided with multiple metal protrusions. The first detection wheel 6 and the second detection wheel 8 are connected by a connecting mechanism. The connecting mechanism includes a fixing frame 12 fixed on the first bracket 4 and the second bracket 5 respectively. An adjusting rod 13 is threaded to one side of the fixing frame 12. A conductive sheet 14 is fixedly connected to one end of the fixing frame 12 by a return spring 15. One end of the adjusting rod 13 abuts against one side of the conductive sheet 14, and the other side of the conductive sheet 14 abuts against the surfaces of the first detection wheel 6 and the second detection wheel 8 respectively. The two conductive sheets 14 are connected by a first wire 11. In use, the yarn is conveyed by a power roller. During conveying, the first detection wheel 6 and the second detection wheel 8 rotate, and the second detection wheel 8 holds... Continuing to contact the yarn, the protruding end 7 of the rotating surface of the first detection wheel 6 intermittently contacts the yarn, forming a DC circuit. Under continuous power supply, the indicator light on the protruding end 7 illuminates to indicate that there is a break in this section of yarn. When the indicator light does not illuminate, the drive cylinder 16 is activated to drive the motion frame 18 to move, causing the conductive needle 22 to pierce into the yarn. Through the conductive sheet 14, a DC circuit is formed with the second detection wheel 8 for detection. The indicator light 21 at the corresponding conductive needle 22 illuminates, while only the break point remains unlit, quickly locating the break point. This allows for rapid coarse detection of a large area of ​​yarn. Once a break point is confirmed, fine detection is performed to quickly locate the break point.

[0019] The first detection wheel 6, the protruding end 7, the conductive sheet 14, the wire, the second detection wheel 8, and the yarn form a DC circuit.

[0020] A drive cylinder 16 is fixedly connected to one side of the limit frame 3. A motion frame 18 is fixedly connected to one end of the piston rod of the drive cylinder 16. A plurality of arrayed conductive needles 22 are fixedly connected to one side of the motion frame 18. The motion frame 18 is electrically connected to the conductive sheet 14 on the second detection wheel 8 through the second wire 17. A plurality of indicator lights 21 corresponding to the conductive needles 22 are electrically connected to the surface of the motion frame 18. Each conductive needle 22 is directly connected to the second wire 17 through a shunt line.

[0021] The distance between the first detection wheel 6 and the second detection wheel 8 is greater than the distance between the two protruding ends 7.

[0022] The surface of the second detection wheel 8 is provided with a groove that is compatible with the yarn, and the bottom is in contact with the surface of the limiting frame 3.

[0023] When using this invention, the first stage is: equipment preparation and yarn threading. The conductive yarn to be tested is sequentially passed through the limiting frame 3, the groove of the second detection wheel 8, and below the first detection wheel 6, and finally pulled by the power roller on the other side. Ensure good contact between the yarn and both detection wheels. Turn on the system power; the coarse detection circuit is established.

[0024] Phase Two: Rapid Online Preliminary Detection and Screening The conveyor rollers are started, and the yarn begins to move at a constant speed. At the same time, the motors driving the first detection wheel 6 and the second detection wheel 8 are started, causing them to rotate at a linear speed that matches the movement of the yarn.

[0025] Circuit configuration: The current path is as follows: positive power supply → conductive sheet 14 on the first bracket 4 → first detection wheel 6 → protruding end 7 currently in contact with the yarn and its pressing contact 10 → yarn → metal protrusion of the second detection wheel 8 → conductive sheet 14 on the second bracket 5 → negative power supply, forming a complete DC circuit with the indicator light connected in series.

[0026] Detection and indication: As the first detection wheel 6 rotates, its multiple protruding ends 7 sequentially contact the yarn passing below. Whenever a protruding end contacts the yarn, if the yarn segment corresponding to that contact point is conductive, the entire circuit is energized, and the indicator light on that protruding end illuminates. As the yarn moves and the wheel rotates, the operator will see a continuously lit band of light from the indicator light.

[0027] Anomaly detection: If there is a break in the yarn, when the break area moves to the detection position, the corresponding protruding end 7 will not be able to form a circuit when contacting the yarn, and the indicator light on the protruding end will turn off or flash. By observing the continuity of the indicator light's on / off state, it is possible to quickly determine whether there is a break in the entire roll of yarn and roughly determine the yarn length range corresponding to the roll in which the break occurs.

[0028] Phase 3: Precise positioning and detection of breakpoint coordinates. When the preliminary inspection detects that the indicator light is abnormally off, the system determines that there is a suspicious breakpoint section, and the conveyor roller is paused or the section is marked.

[0029] The precision inspection mechanism is activated: the control drive cylinder 16 moves to push the motion frame 18 and the row of conductive needles 22 on it to move downward or towards the yarn, so that all conductive needles simultaneously pierce into the yarn inside the suspicious section.

[0030] Precision detection circuit configuration: At this point, the precision detection circuit is established. The current path is as follows: positive power supply → second wire 17 → moving frame 18 and shunt circuit → each conductive needle 22 → yarn flows from the insertion point to both sides → the current flowing to both sides finally reaches the continuous contact point of the second detection wheel 8 and the possible contact point of the first detection wheel 6 through the yarn respectively, and then returns to the negative power supply through their respective conductive plates 14. Each conductive needle 22 has its own independent indicator light 21 connected in series on its branch.

[0031] Precise positioning: Among all the conductive needles inserted into the yarn, the needles located on the same side as the break point have a continuous circuit, and their corresponding indicator lights illuminate; while the needles that are inserted precisely at the break point or whose circuit is broken due to the break point have their indicator lights off. Therefore, by observing this row of indicator lights, a clear dividing line between the on and off states will appear. This dividing line precisely indicates between which two adjacent conductive needles the break point is located, with positioning accuracy down to the distance between the conductive needles, such as a few millimeters.

[0032] Phase 4: Reset and Subsequent Processing After recording or marking the breakpoint location, the drive cylinder 16 retracts, causing the conductive needle 22 to disengage from the yarn. The system can then continue to perform coarse inspection on subsequent yarns or re-inspect repaired / cut yarns.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A conductive yarn breakage detection and positioning mechanism, comprising a detection platform (1), wherein both sides of the detection platform (1) are equipped with power rollers for conveying the yarn, characterized in that: The surface of the testing platform (1) is fixedly connected to a limiting frame (3) for limiting the yarn. The side of the testing platform (1) is fixedly connected to a side plate (2). The surface of the side plate (2) is fixedly connected to a first bracket (4) and a second bracket (5). The surface of the first bracket (4) is rotatably connected to a first detection wheel (6) driven by a motor. The surface of the second bracket (5) is rotatably connected to a second detection wheel (8) driven by a motor. The surface of the first detection wheel (6) is provided with a plurality of protruding ends (7) arranged in a ring array. An indicator light is fixedly connected to the surface of the protruding end (7). The surface of the protruding end (7) is provided with an inner groove (9) adapted to the yarn. The inner cavity of the inner groove (9) is provided with a plurality of pressing contacts (10). The surface of the second detection wheel (8) is provided with a plurality of metal protrusions. The first detection wheel (6) and the second detection wheel (8) are connected by a connecting mechanism. The connecting mechanism includes a fixing frame (12) fixed on the first bracket (4) and the second bracket (5) respectively. An adjusting rod (13) is threadedly connected to one side of the fixing frame (12). A conductive sheet (14) is fixedly connected to one end of the fixing frame (12) by a return spring (15). One end of the adjusting rod (13) abuts against one side of the conductive sheet (14). The other side of the conductive sheet (14) abuts against the surfaces of the first detection wheel (6) and the second detection wheel (8) respectively. The two conductive sheets (14) are connected by a first wire (11).

2. The conductive yarn breakage contact detection and positioning mechanism according to claim 1, characterized in that: The first detection wheel (6), the protruding end (7), the conductive sheet (14), the first wire (11), the second detection wheel (8), and the yarn form a DC circuit.

3. The conductive yarn breakage contact detection and positioning mechanism according to claim 1, characterized in that: A drive cylinder (16) is fixedly connected to one side of the limiting frame (3). One end of the piston rod of the drive cylinder (16) is fixedly connected to a moving frame (18) via a connecting rod (19). A plurality of arrayed conductive needles (22) are fixedly connected to one side of the moving frame (18). The moving frame (18) is electrically connected to the conductive sheet (14) on the second detection wheel (8) via a second wire (17). A plurality of indicator lights (21) corresponding to the conductive needles (22) are electrically connected to the surface of the moving frame (18). Each conductive needle (22) is directly connected to the second wire (17) via a shunt line.

4. The conductive yarn breakage contact detection and positioning mechanism according to claim 1, characterized in that: The distance between the first detection wheel (6) and the second detection wheel (8) is greater than the distance between the two protruding ends (7).

5. The conductive yarn breakage contact detection and positioning mechanism according to claim 1, characterized in that: The surface of the second detection wheel (8) is provided with a groove that is compatible with the yarn, and the bottom is in contact with the surface of the limiting frame (3).

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