A twist meter testing length track control device

Abstract

The utility model discloses a kind of twist tester test length track control devices, comprising: base, mounting bracket, test motor, winder and mobile platform.Mobile platform is driven ball screw with servo motor, realize ±0.1 mm level closed-loop positioning;Tension rod one end is equipped with double clamping plate quick yarn fixation, other end is through ladder square shaft and digital angle sensing component rigid straight connection, built-in digital hall sensor non-contact detection magnet, output 0.5 ° resolution angle signal, eliminate ±0.8 ° visual error;Shielding shell and flange form anti-electromagnetic, dustproof, prevent micro-displacement three-dimensional protection;Signal output module real-time display angle, support continuous monitoring and abnormal alarm.The device displacement drift is less than 0.05 mm under 10 Hz vibration environment, consider the precision, speed and reliability of high yarn twist detection, suitable for textile laboratory and production line online detection.

Description

Technical Field

[0001] This utility model relates to the field of textile testing equipment technology, and in particular to a track control device for testing the length of a twist meter. Background Technology

[0002] As a core piece of equipment for quality inspection in the textile industry, the yarn twist meter traditionally relies on visual alignment of a mechanical pointer with a scale plate for offset measurement. This method has revealed significant shortcomings in long-term practical application: In terms of accuracy, limited by the minimum pointer division and human reading angle errors, it struggles to meet the 0.5° resolution requirements of high-count yarns, leading to distorted twist unevenness calculations; in terms of efficiency, operators must manually record the pointer position after the test motor stops, increasing the time for a single test by 3-5 seconds, severely hindering the automation of continuous batch testing; and in terms of reliability, factory vibrations easily cause pointer jitter, and the inertial motion of the counterweight on the balance wheel further amplifies the oscillation effect in high-temperature and high-humidity environments. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a track control device for testing the length of a twist meter.

[0004] A twist meter length testing track control device according to a first aspect embodiment of the present invention is characterized in that it comprises:

[0005] The twist meter body includes a base, a mounting frame and a test motor mounted on the base, a digital angle sensing component mounted on and rotatably connected to the mounting frame, a rotatable tension rod on the digital angle sensing component, and a fixing hook fixedly connected to the end of the test motor shaft for fixing the yarn end. A clamping component is fixedly mounted on the end of the tension rod away from the mounting frame along its length direction. The clamping component includes two clamping plates arranged in a horizontal direction, and the two clamping plates abut against each other.

[0006] The mobile platform includes a base frame and a drive device arranged along the length of the base frame. The drive device includes a ball screw and a bearing housing for mounting the ball screw. One end of the ball screw is connected to a servo motor. A sliding nut is screwed onto the ball screw. A slider is mounted on the sliding nut. The test motor is mounted on the slider.

[0007] The digital angle sensing component includes a rotating shaft, with one end of the tension rod away from the clamping assembly fixedly mounted on the rotating shaft. A magnet is embedded in the rotating shaft, and a magnetically sensitive circuit board that is non-contactly aligned with the magnet is provided inside the digital angle sensing component.

[0008] According to an embodiment of the present invention, a track control device for testing the length of a twist meter has at least the following beneficial effects: By integrating a digital angle sensing component into the twist meter body and adopting a rigid direct connection structure between the tension rod and the rotating shaft, combined with non-contact alignment detection using a magnet embedded in the rotating shaft and a magnetically sensitive circuit board, the inherent ±0.8° level reading error of the traditional mechanical pointer visual reading method is effectively eliminated, the angle detection resolution is improved to 0.5° level, and the response speed reaches the millisecond level, significantly improving the accuracy and real-time performance of twist offset measurement; at the same time, the non-contact detection mechanism naturally resists dust pollution in textile workshops, and the magneto-electric isolation characteristics effectively suppress electromagnetic interference during the start and stop of the test motor. Combined with the precise displacement control of the test motor by the moving platform (including ball screw drive, servo motor and slider), a high-precision, high-efficiency and high-reliability solution for high-count yarn twist detection is provided while maintaining the original working conditions of the balance wheel counterweight system.

[0009] According to some embodiments of the present invention, a signal output module is also included, the signal output module including a display for displaying the real-time rotation angle of the output tension rod, the display being connected to the magnetic sensitive circuit board.

[0010] According to some embodiments of the present invention, the rotating shaft is a stepped shaft structure, including a first step disposed inside the digital angle sensing component and a second step connected to the tension rod. The magnet is embedded at the bottom of the first step, the cross-section of the second step is square, and the tension rod has a square hole that mates with the second step.

[0011] According to some embodiments of this utility model, the magnetically sensitive circuit board is a digital Hall sensor.

[0012] According to some embodiments of the present invention, the digital angle sensing component includes a shielding housing, and the bottom of the shielding housing is provided with a flange structure that is fixedly connected to the mounting bracket.

[0013] According to some embodiments of the present invention, the base frame is provided with a scale for marking the position of the slider.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the digital angle sensing component according to an embodiment of the present utility model;

[0018] Figure 3 This is an exploded structural diagram of the digital angle sensing component according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mobile platform according to an embodiment of the present utility model.

[0020] 1. Twist meter body; 10. Base; 11. Winder; 12. Mounting frame; 14. Test motor; 15. Fixing hook; 2. Tension bar; 3. Digital angle sensing component; 31. Magnet; 32. Magnetic sensitive circuit board; 4. Rotating shaft; 5. Clamping component; 51. Clamping plate; 6. Flange structure; 7. Moving platform; 71. Base frame; 72. Drive device; 73. Bearing seat; 74. Servo motor; 75. Slider. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figure 1-4A twist meter length testing track control device according to a first aspect embodiment of the present invention is characterized in that it comprises:

[0026] The twist meter body 1 includes a base 10, a mounting frame 12 installed in the middle of the base 10, a test motor 14 installed at one end of the base 10, a winder 11 installed at the other end of the base 10, a digital angle sensing component 3 installed on the mounting frame 12 and rotatably connected to the mounting frame 12, a rotatable tension rod 2 provided on the digital angle sensing component 3, and a fixing hook 15 fixedly connected to the end of the rotating shaft 4 of the test motor 14 for fixing the end of the yarn. A clamping component 5 is fixedly installed along the length direction of the end of the tension rod 2 away from the mounting frame 12. The clamping component 5 includes two clamping plates 51 arranged in the horizontal direction. The two clamping plates 51 abut against each other. The double clamping plate 51 clamping component 5 maintains the rapid clamping and reliable fixation of the yarn.

[0027] The mobile platform 7 includes a base frame 71 and a drive device 72 arranged along the length of the base frame 71. The drive device 72 includes a ball screw and a bearing seat 73 for mounting the ball screw. One end of the ball screw is connected to a servo motor 74. A sliding nut is screwed onto the ball screw, and a slider 75 is mounted on the sliding nut. The test motor is mounted on the slider 75. The servo motor 74 drives the slider 75 through the ball screw, and with the closed-loop control of the grating ruler, a positioning accuracy of ±0.1mm is achieved for the test length. The composite guide structure of the sliding nut and the linear bearing ensures that the displacement drift of the mobile platform 7 is <0.05mm under a 10Hz vibration environment. The servo motor 74 and the digital angle sensing component 3 achieve motion-detection coordination through a controller, reducing the coordination error between length control and angle detection.

[0028] The digital angle sensing component 3 includes a rotating shaft 4. The end of the tension rod 2 away from the clamping component 5 is fixedly mounted on the rotating shaft 4. The rigid direct connection design between the rotating shaft 4 and the tension rod 2 reduces friction hysteresis and improves the response speed to the millisecond level. A magnet 31 is embedded in the rotating shaft 4. The digital angle sensing component 3 is provided with a magnetic sensitive circuit board 32 that is non-contactly aligned with the magnet 31. The magnetic sensitive circuit board 32 performs non-contact detection of the magnet 31 embedded in the rotating shaft 4 (replacing the traditional mechanical pointer) and directly outputs the real-time rotation angle of the tension rod 2, completely eliminating visual interpretation errors of ±0.8°.

[0029] According to an embodiment of the present invention, a track control device for testing the length of a twist meter has at least the following beneficial effects: By integrating the digital angle sensing component 3 into the twist meter body 1, and retaining the yarn fixing structure of the original clamping component 5 double clamping plate 51, the present invention utilizes the non-contact alignment detection of the magnet 31 embedded in the rotating shaft 4 and the magnetic sensitive circuit board 32 to completely eliminate the ±0.8° level reading error caused by the visual reading of the traditional mechanical pointer; the rigid direct connection design between the tension rod 2 and the rotating shaft 4 avoids the detection delay caused by the mechanical transmission gap, and realizes the millisecond-level real-time digital output of the twist offset; at the same time, the non-contact detection mechanism naturally resists dust pollution in the textile workshop, and combined with the magneto-electric isolation characteristics, effectively suppresses the electromagnetic interference of the test motor 14 starting and stopping, and provides a highly reliable solution with 0.5° level resolution for twist detection of high-count yarns while maintaining the original working conditions of the balance wheel counterweight system.

[0030] According to some embodiments of this utility model, a signal output module is also included. This signal output module includes a display for showing the real-time rotation angle of the output tension rod 2, and the display is connected to the magnetic sensitive circuit board 32. This utility model achieves a dual breakthrough in real-time visualization and ease of operation through the integrated signal output module and display: the display directly presents the real-time rotation angle of the tension rod 2, completely replacing the manual position estimation of the traditional scale plate. Operators can clearly read the data within a normal working distance, significantly reducing the risk of visual fatigue. Simultaneously, the synchronous output of angle values ​​eliminates the need for downtime recording, greatly improving the efficiency of continuous batch testing. More importantly, real-time angle monitoring allows operators to instantly detect yarn abnormalities (such as breakage or sudden tension changes) during the untwisting process. Combined with expandable threshold alarm functions, a closed-loop quality control system is constructed throughout the entire process. The direct connection architecture between the display and the magnetic sensitive circuit board 32 ensures zero-delay collaboration between "sensor-display," promoting the intelligent transformation of twist detection from passive interpretation to active monitoring.

[0031] According to some embodiments of this utility model, the rotating shaft 4 is a stepped shaft structure, including a first step disposed inside the digital angle sensing component 3 and a second step connected to the tension rod 2. The magnet 31 is embedded at the bottom of the first step, the cross-section of the second step is square, and the tension rod 2 has a square hole that mates with the second step. The stepped shaft structure design of this utility model achieves a breakthrough in both mechanical adaptability and measurement accuracy: the magnet 31 is embedded at the bottom of the first step, ensuring a constant distance between the magnet 31 and the magnetically sensitive circuit board 32, eliminating the positioning deviation of traditional split installation; the gapless fit between the square shaft of the second step and the square hole of the tension rod 2 completely solves the radial wobble problem of the original pointer slider 75 structure, improving the angle detection resolution to 0.5°; more importantly, the stepped transition cross-section (the first step is thickened by more than 30%) significantly enhances the bending stiffness of the rotating shaft 4, maintaining signal stability under sudden changes in yarn tension, providing a hardware foundation for millinewton-level mechanical response for high-count yarn twist detection.

[0032] According to some embodiments of this utility model, the magnetic sensitive circuit board 32 is a digital Hall sensor. This utility model uses a digital Hall sensor as the core component of the magnetic sensitive circuit board 32, achieving a dual breakthrough in signal accuracy and adaptability to operating conditions: the Hall element's linear response characteristics to changes in the magnetic field of the magnet 31 on the rotating shaft 4 (sensitivity up to ±0.1mT) convert the rotation angle of the tension rod 2 into a hysteresis-free digital signal output, completely eliminating the frictional damping error of traditional mechanical pointers; its physical characteristic of a temperature drift coefficient <100ppm / ℃ ensures the stability of angle detection in textile workshop environments from -40℃ to 85℃ (fluctuation <0.5°), overcoming the jamming problem caused by the thermal expansion and contraction of the original metal pointer; more importantly, the Hall sensor's detection mechanism requires no physical contact, naturally resisting dust pollution caused by yarn fiber breakage, and its lifespan is more than 3 times longer than that of a photoelectric encoder, laying the hardware foundation for the maintenance-free operation of the twist meter.

[0033] According to some embodiments of this utility model, the digital angle sensing component 3 includes a shielding housing, and the bottom of the shielding housing is provided with a flange structure 6 fixedly connected to the mounting bracket 12. The shielding housing design of this utility model constructs a three-dimensional protection system: the rigid connection between the bottom flange structure 6 and the mounting bracket 12 completely eliminates the risk of micro-displacement of the sensor component under high yarn tension conditions; the permalloy housing forms a closed magnetic shielding layer, attenuating the electromagnetic interference generated by the carbon brush sparks of the test motor 14 by >40dB, ensuring the Hall sensor signal stability reaches ±0.1°; more importantly, the housing's complete enclosure and sealing against dust and oil mist eradicates the chronic problem of jamming caused by fiber entanglement in traditional open pointer mechanisms, extending the equipment maintenance cycle by more than 3 times. This design achieves an integrated protection leap of "anti-interference - anti-pollution - mechanical stability" without increasing external space occupancy.

[0034] According to some embodiments of this utility model, the base frame 71 is provided with a scale for marking the position of the slider 75. This scale on the base frame 71 provides an intuitive visual reference for the position of the slider 75, effectively assisting the operator in initial rapid positioning and rough calibration. In the event of a malfunction in the servo motor 74 control system, it can serve as a mechanical position reference for emergency manual operation, significantly enhancing the operability of the equipment and the redundancy and reliability of the system.

[0035] The embodiments described above with reference to the accompanying drawings have been described in detail. However, the embodiments are not limited to those described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A track control device for testing the length of a twist meter, characterized in that, include: The twist meter body (1) includes a base (10), a movable platform (7) mounted on the side of the base, a mounting bracket (12) mounted on the base (10), a test motor (14) mounted on the movable platform (7), a digital angle sensing component (3) mounted on the mounting bracket (12) and rotatably connected to the mounting bracket (12), a rotatable tension rod (2) provided on the digital angle sensing component (3), and a fixing hook (15) fixedly connected to the end of the shaft (4) of the test motor (14) for fixing the end of the yarn. A clamping component (5) is fixedly installed on the end of the tension rod (2) away from the mounting bracket (12) along its length direction. The clamping component (5) includes two clamps (51) arranged in the horizontal direction, and the two clamps (51) abut against each other. The mobile platform (7) includes a base frame (71) and a drive device (72) arranged along the length of the base frame (71). The drive device (72) includes a ball screw and a bearing seat (73) for mounting the ball screw. One end of the ball screw is connected to a servo motor (74). A sliding nut is screwed onto the ball screw. A slider (75) is mounted on the sliding nut. The test motor (14) is mounted on the slider (75). The digital angle sensing component (3) includes a rotating shaft (4), and the end of the tension rod (2) away from the clamping component (5) is fixedly mounted on the rotating shaft (4). A magnet (31) is embedded in the rotating shaft (4), and a magnetic sensitive circuit board (32) is provided inside the digital angle sensing component (3) to be non-contactly aligned with the magnet (31).

2. The twist meter length testing track control device according to claim 1, characterized in that: It also includes a signal output module, which includes a display for displaying the real-time rotation angle of the output tension rod (2), the display being connected to the magnetic sensitive circuit board (32).

3. The twist meter length testing track control device according to claim 1, characterized in that: The rotating shaft (4) is a stepped shaft structure, including a first step disposed inside the digital angle sensing component (3) and a second step connected to the tension rod (2). The magnet (31) is embedded at the bottom of the first step. The cross-section of the second step is square. The tension rod (2) has a square hole that cooperates with the second step.

4. The twist meter length testing track control device according to claim 1, characterized in that: The magnetic sensitive circuit board (32) is a digital Hall sensor.

5. The twist meter length testing track control device according to claim 1, characterized in that: The digital angle sensing component (3) includes a shielding housing, and the bottom of the shielding housing is provided with a flange structure (6) that is fixedly connected to the mounting bracket (12).

6. The twist meter length testing track control device according to claim 1, characterized in that: The base frame (71) is provided with a scale for marking the position of the slider (75).

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