Yarn twist measuring device based on visual identification

Abstract

A yarn twist measuring device based on visual identification relates to the technical field of textile production, is used for measuring the twist of yarns, and comprises a machine body, and an input leather roller group, a front tension adjusting leather roller group, a rear tension adjusting leather roller group and an output leather roller group which are sequentially arranged on one side of the machine body from left to right, and a visual identification mechanism for continuously measuring the twist degree of the passing yarns is arranged between the front tension adjusting leather roller group and the rear tension adjusting leather roller group. According to the utility model, accurate and continuous measurement of the yarn twist is realized, the self-adaptive backlight plate improves the image quality, and the measurement accuracy is ensured. Meanwhile, the control screen provides a convenient operation interface, and a user can flexibly set parameters and check data in real time. The overall design is compact and efficient, and the device is suitable for yarn quality detection and control in the textile industry.

Description

Technical Field

[0001] This utility model relates to the field of textile production technology, specifically to a yarn twist measuring device based on visual recognition. Background Technology

[0002] In the textile industry, yarn twist is a key indicator of yarn quality, directly impacting the physical properties and appearance characteristics of products, such as strength, abrasion resistance, luster, and hand feel. Therefore, accurate and efficient measurement of yarn twist is crucial for ensuring textile quality and improving production efficiency.

[0003] Currently, the determination of yarn twist in textiles mainly relies on two national standard methods: GB / T 2543.1 and GB / T 2543.2. GB / T 2543.1 is the direct counting method, which determines the twist by directly observing and counting the number of twists of the yarn over a certain length; while GB / T 2543.2 is the untwisting and retwisting method, which calculates the yarn twist by untwisting the yarn to a untwisted state and then retwisting it back to the original state.

[0004] However, both methods have significant limitations. First, they are both intermittent sampling testing methods, meaning they can only test selected samples one by one, and cannot achieve continuous, real-time monitoring of yarn twist. This testing method is not only inefficient, but also prone to inaccurate results due to improper sample selection or errors in the testing process.

[0005] Secondly, because these two methods cannot output continuous data, they cannot provide sufficient evidence for the study of yarn twist changes. During textile production, yarn twist can change due to various factors, such as raw material quality and production process parameters. Only through continuous, real-time monitoring of yarn twist can these changes be accurately captured, allowing for further analysis of the causes and the implementation of corresponding improvement measures. Utility Model Content

[0006] The purpose of this invention is to propose a yarn twist measuring device based on visual recognition to address the technical deficiencies mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A vision-based yarn twist measuring device for measuring yarn twist includes a machine body, an input roller group, a front tension adjusting roller group, a rear tension adjusting roller group, and an output roller group arranged sequentially from left to right on one side of the machine body. A vision recognition mechanism for continuously measuring the twist of passing yarn is provided between the front tension adjusting roller group and the rear tension adjusting roller group.

[0009] Furthermore, the visual recognition mechanism includes a light shield mounted on the machine body, with openings on the left and right sides of the light shield to allow yarn to pass through, and a downward-facing visual camera mounted on the top of the light shield. The visual camera photographs the yarn passing below and generates photographic data.

[0010] Furthermore, an adaptive backlight panel is provided at the bottom of the light shield. When the main subject of the image is too dark or too bright, the adaptive backlight panel actively adjusts the brightness to the optimal state.

[0011] Furthermore, the input roller group, the front tension adjusting roller group, the rear tension adjusting roller group, and the output roller group are all composed of a pair of rollers arranged vertically. The yarn is transmitted between the upper and lower rollers. Each roller is driven to rotate by a DC motor. The front tension adjusting roller group and the rear tension adjusting roller group are equipped with tension strain gauges for measuring the yarn tension between the two rollers.

[0012] Furthermore, it also includes a control screen installed on the machine body. The control screen has a functional area for setting the yarn twist direction, fineness, yarn speed, and data acquisition speed, as well as a display area for displaying the acquired yarn twist data.

[0013] Furthermore, it also includes a main control circuit board disposed in the machine body, which is connected to the control screen, vision camera, adaptive backlight panel, input roller group, front tension adjusting roller group, rear tension adjusting roller group, and output roller group.

[0014] Furthermore, the device body is provided with a camera interface connected to the vision camera, an adjustable background interface connected to the adaptive backlight panel, and a USB port connected to the control screen.

[0015] Furthermore, the machine body is provided with a heat sink for cooperating with the main control circuit board.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention introduces yarn through an input roller assembly on the machine body. After the tension is adjusted by the front tension regulating roller assembly, the yarn enters the visual recognition area within the light shield. A top-down visual camera continuously photographs the yarn, while an adaptive backlight automatically adjusts according to the image brightness to ensure image quality. The photographic data is transmitted to the main control circuit board for analysis, calculating the yarn twist. Users can set parameters and view the results via the control screen. The rear tension regulating roller assembly further adjusts the tension, and the yarn is finally output by the output roller assembly. This invention achieves precise and continuous measurement of yarn twist. The adaptive backlight improves image quality and ensures measurement accuracy. Simultaneously, the control screen provides a user-friendly interface, allowing users to flexibly set parameters and view data in real time. The overall design is compact and efficient, suitable for yarn quality inspection and control in the textile industry. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of this utility model; Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] like Figure 1-3 As shown, a vision-based yarn twist measuring device is used to measure the twist of yarn 9. It includes a machine body 1, and, from left to right, an input roller group 2, a front tension adjusting roller group 3, a rear tension adjusting roller group 7, and an output roller group 8, all arranged on one side of the machine body 1. A vision recognition mechanism for continuously measuring the twist of the passing yarn 9 is provided between the front tension adjusting roller group 3 and the rear tension adjusting roller group 7. The vision recognition mechanism includes a light shield 6 mounted on the machine body 1. The light shield 6 has openings on its left and right sides to allow the yarn 9 to pass through. A downward-facing vision camera 4 is mounted on the top of the light shield 6. The vision camera 4 photographs the passing yarn 9 below, generating photographic data.

[0027] This vision-based yarn twist measurement device introduces yarn through an input roller assembly. After the tension is stabilized by a front tension regulating roller assembly, the yarn enters the vision recognition area within a light-shielding cover. A top-down vision camera continuously photographs the yarn, generating photographic data containing yarn twist information. A rear tension regulating roller assembly further ensures stable yarn tension, and finally, the yarn is output through an output roller assembly. The device calculates the yarn twist by analyzing the photographic data. This device achieves continuous, non-contact measurement of yarn twist, improving measurement accuracy and efficiency, reducing human error, and the light-shielding cover design effectively avoids interference from external light, ensuring the accuracy of the measurement results.

[0028] Specifically, as shown in the figure, an adaptive backlight panel 5 is provided at the bottom of the light shield 6. When the main subject of the image is too dark or too bright, the adaptive backlight panel 5 actively adjusts the brightness to the optimal state. When the yarn passes through the area of ​​the adaptive backlight panel 6, the vision camera 5 performs calibration photography on the yarn, and the image is returned to the main control circuit to determine the image condition. When the main subject of the image is too dark, the adaptive backlight panel 6 will actively adjust the brightness. Conversely, it will dim the adaptive backlight panel 6. After adjusting to the optimal state, the screen display shows that the calibration is complete.

[0029] Specifically, as shown in the figure, the input roller group 2, the front tension adjusting roller group 3, the rear tension adjusting roller group 7, and the output roller group 8 are all composed of a pair of rollers arranged vertically. The yarn 9 is transmitted between the two rollers. Each roller is driven to rotate by a DC motor 11. The front tension adjusting roller group 3 and the rear tension adjusting roller group 7 have built-in tension strain gauges for measuring the yarn tension between the two rollers. The tension strain gauges can measure the yarn tension between the two rollers. When the tension is maintained at the preset tension requirement, if the tension is too high, the front tension adjusting roller 3 increases its speed, and the rear tension adjusting roller 7 decreases its speed; if the tension is too low, the opposite is true. The yarn is output to the outside of the equipment through the rear tension adjusting roller 7 and the output roller 8.

[0030] Specifically, as shown in the figure, it also includes a control screen 10 set on the machine body 1. The control screen 10 is provided with a functional area for setting the twist direction, fineness, yarn speed and data acquisition speed of the yarn, as well as a display area for displaying the acquired yarn twist data.

[0031] Specifically, as shown in the figure, it also includes a main control circuit board 12 disposed in the machine body 1. The main control circuit board 12 is connected to the control screen 10, the vision camera 4, the adaptive backlight panel, the input roller group 2, the front tension adjusting roller group 3, the rear tension adjusting roller group 7, and the output roller group 8.

[0032] Specifically, as shown in the figure, the body 1 is provided with a camera interface 13 connected to the visual camera 4, an adjustable background interface 14 connected to the adaptive backlight panel, and a USB port 16 connected to the control screen 10.

[0033] Specifically, as shown in the figure, the body 1 is provided with a heat sink 15 for cooperating with the main control circuit board 12.

[0034] This invention introduces yarn through an input roller assembly on the machine body. After the tension is adjusted by the front tension regulating roller assembly, the yarn enters the visual recognition area within the light shield. A top-down visual camera continuously photographs the yarn, while an adaptive backlight automatically adjusts according to the image brightness to ensure image quality. The photographic data is transmitted to the main control circuit board for analysis, calculating the yarn twist. Users can set parameters and view the results via the control screen. The rear tension regulating roller assembly further adjusts the tension, and the yarn is finally output by the output roller assembly. This invention achieves precise and continuous measurement of yarn twist. The adaptive backlight improves image quality and ensures measurement accuracy. Simultaneously, the control screen provides a user-friendly interface, allowing users to flexibly set parameters and view data in real time. The overall design is compact and efficient, suitable for yarn quality inspection and control in the textile industry.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A yarn twist measuring device based on visual recognition, used to measure the twist of yarn (9), characterized in that, The machine includes a body (1), an input roller group (2), a front tension adjusting roller group (3), a rear tension adjusting roller group (7), and an output roller group (8) arranged sequentially from left to right on one side of the body (1). A visual recognition mechanism for continuously measuring the twist of the passing yarn (9) is provided between the front tension adjusting roller group (3) and the rear tension adjusting roller group (7).

2. The yarn twist measuring device based on visual recognition according to claim 1, characterized in that, The visual recognition mechanism includes a light shield (6) set on the body (1). The light shield (6) has openings on the left and right sides to allow yarn (9) to pass through. The top of the light shield (6) is equipped with a downward-facing visual camera (4). The visual camera (4) takes pictures of the yarn (9) passing below and generates photographic data.

3. The yarn twist measuring device based on visual recognition according to claim 2, characterized in that, An adaptive backlight plate (5) is provided at the bottom of the light shield (6). When the main image is too dark or too bright, the adaptive backlight plate (5) actively adjusts the brightness to the optimal state.

4. The yarn twist measuring device based on visual recognition according to claim 3, characterized in that, The input roller group (2), the front tension adjusting roller group (3), the rear tension adjusting roller group (7), and the output roller group (8) are all composed of a pair of rollers arranged in an up-down position. The yarn (9) is transmitted between the upper and lower rollers. Each roller is driven to rotate by a DC motor (11). The front tension adjusting roller group (3) and the rear tension adjusting roller group (7) are equipped with tension strain gauges for measuring the yarn tension between the two rollers.

5. The yarn twist measuring device based on visual recognition according to claim 4, characterized in that, It also includes a control screen (10) set on the machine body (1). The control screen (10) is provided with a functional area for setting the twist direction, fineness, yarn speed and data acquisition speed of the yarn, and a display area for displaying the acquired yarn twist data.

6. The yarn twist measuring device based on visual recognition according to claim 5, characterized in that, It also includes a main control circuit board (12) disposed in the body (1), the main control circuit board (12) being connected to the control screen (10), the vision camera (4), the adaptive backlight, the input roller group (2), the front tension adjusting roller group (3), the rear tension adjusting roller group (7), and the output roller group (8).

7. The yarn twist measuring device based on visual recognition according to claim 6, characterized in that, The body (1) is provided with a camera interface (13) connected to the vision camera (4), an adjustable background interface (14) connected to the adaptive backlight panel, and a USB port (16) connected to the control screen (10).

8. The yarn twist measuring device based on visual recognition according to claim 7, characterized in that, The body (1) is provided with a heat sink (15) for cooperating with the main control circuit board (12).

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