A visual inspection device for the quality of colored roving yarn

Abstract

This utility model relates to the field of textile inspection equipment technology, and discloses a visual inspection device for the quality of colored roving yarn, including an electrical control cabinet and an image acquisition module. The electrical control cabinet houses a light source controller and an industrial computer. The image acquisition module includes a single-arm frame support, an industrial camera, and a bar light source. The bar light source is connected to the single-arm frame support via a light source moving bracket, and the industrial camera is connected to the single-arm frame support via a camera moving base. The industrial camera, light source controller, and display are all signal-connected to the industrial computer, and the bar light source is electrically connected to the light source controller. This utility model employs dual light sources with multi-angle supplementary lighting, combined with precise overlap between the camera's focusing area and the light source's superposition area, ensuring clear and stable images of high-speed moving yarns and meeting high-precision inspection requirements. The modular installation of the industrial camera and light source via the camera moving bracket and light source moving base effectively overcomes equipment layout limitations.

Description

Technical Field

[0001] This utility model relates to the technical field of textile inspection equipment, specifically to a visual inspection device for the quality of colored roving yarn. Background Technology

[0002] As an important intermediate product in the textile industry, the quality of spun yarn directly affects the performance of subsequent spinning and fabric production. Quality inspection of spun yarn mainly includes the evaluation of key indicators such as appearance defects, color difference, and yarn evenness. Traditional inspection methods rely heavily on manual visual inspection or simple mechanical inspection equipment. These methods have the following drawbacks: low efficiency and poor real-time performance: real-time monitoring of the production process is impossible, leading to delayed anomaly detection; high rate of missed detection: manual visual inspection is prone to fatigue and struggles to capture anomalies that occur instantaneously (at the millisecond level) during high-speed movement; and the quality of the inner layer yarn cannot be determined through visual inspection.

[0003] Traditional mechanical inspection equipment has limited functionality, typically only capable of detecting specific types of defects, making it difficult to meet the diverse quality requirements of roving yarns. Furthermore, while the application of existing visual inspection technology in the textile industry has developed, it is mostly concentrated on finished fabrics or fine yarns. Existing visual inspection devices suffer from poor robustness, and current automated inspection solutions often lack targeted optimization for changes in ambient light intensity, high-speed yarn movement, and yarn vibration in the spinning workshop, resulting in unstable and unclear image acquisition, failing to meet the demands for accurate inspection. There is also the risk of equipment interference; contact-type or improperly installed inspection equipment may interfere with the normal operation of existing equipment. Environmental adaptability is poor; the fixed layout of light sources, cameras, and control systems cannot adapt to the special structure of roving frames and hinders normal on-site operations.

[0004] Colored fiber spinning (color spinning) is a crucial upstream link in the textile industry, providing raw materials for various textiles. The roving section of color spinning is a key process in yarn drafting, and its yarn quality (such as foreign fibers and uneven thickness) directly affects subsequent weaving efficiency and finished product quality. Therefore, there is an urgent need for a professional visual inspection device that can adapt to the color spinning roving production environment, achieve non-contact real-time online detection, and not affect the operation of existing equipment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a visual inspection device for the quality of colored roving yarn that is simple in structure and easy to use.

[0006] To solve the above-mentioned technical problems, this utility model provides a visual inspection device for the quality of colored roving yarn, including an electrical control cabinet and an image acquisition module;

[0007] The top surface of the electrical control cabinet is sloping and equipped with a display, which is fixedly connected to the electrical control cabinet; the cabinet contains a light source controller and an industrial computer.

[0008] The image acquisition module includes a single-arm frame support, an industrial camera, and a strip light source. The single-arm frame support includes a left support arm and a right support arm, both of which are inverted U-shaped. A first metal crossbeam, a second metal crossbeam, and a third metal crossbeam are sequentially arranged between the left and right support arms. The first and second metal crossbeams are at the same height and are both higher than the third metal crossbeam. The first and third metal crossbeams are each connected to a strip light source through a light source moving support. The second metal crossbeam is connected to the industrial camera through a camera moving base.

[0009] The industrial camera, light source controller, and display are all connected to the industrial computer via signal transmission, while the bar light source is electrically connected to the light source controller.

[0010] As an improvement of the visual inspection device for the quality of colored roving yarn of this utility model:

[0011] The first metal beam, the second metal beam, the left support arm, and the right support arm are connected to each other to form a rectangular frame.

[0012] As a further improvement to the visual inspection device for the quality of colored roving yarn of this utility model:

[0013] The light source movable support includes an L-shaped connector and connecting ears. The two opposite sides of the connecting ears extend downwards to form ears. The vertical arm side of the L-shaped connector is connected to the side of the connecting ears by a locking screw. The ears on both sides of the connecting ears are fixedly connected to the strip light source.

[0014] As a further improvement to the visual inspection device for the quality of colored roving yarn of this utility model:

[0015] The camera moving base is fixedly connected to the second metal crossbeam and the industrial camera on both sides, respectively.

[0016] As a further improvement to the visual inspection device for the quality of colored roving yarn of this utility model:

[0017] The industrial camera is positioned higher than the two bar light sources.

[0018] As a further improvement to the visual inspection device for the quality of colored roving yarn of this utility model:

[0019] The left support arm extends downwards on one side of its U-shape to form a single support arm.

[0020] As a further improvement to the visual inspection device for the quality of colored roving yarn of this utility model:

[0021] The electrical control cabinet is equipped with a stainless steel mounting panel, which is fixedly connected to the electrical control cabinet; the light source controller, industrial computer and stainless steel mounting panel are fixedly connected.

[0022] The beneficial effects of this utility model are mainly reflected in:

[0023] This invention boasts excellent imaging quality, employing dual light sources and multi-angle supplementary lighting. Combined with the precise overlap of the camera's focal area and the light source's superposition area, it ensures clear and stable images of high-speed moving yarns, meeting the requirements for high-precision detection.

[0024] This utility model modularly installs industrial cameras and light sources using a camera moving support and a light source moving base, effectively overcoming equipment layout limitations. The single-arm frame bracket is specially designed for the structure of a yarn spinning roving machine, and its relative position to the equipment is fixed through a rigid connection, making full use of limited space, ensuring detection effect without affecting manual operation and equipment operation.

[0025] The inclined vertical electrical control cabinet design of this utility model features an integrated display on the inclined surface, which facilitates operators in observing and monitoring the status and performing operations, and conforms to ergonomics. Attached Figure Description

[0026] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall connection of a visual inspection device for the quality of colored roving yarn according to the present invention.

[0028] Figure 2 for Figure 1 A schematic diagram of the overall electrical control cabinet in the system;

[0029] Figure 3 for Figure 2 A schematic diagram of the stainless steel mounting panel, light source controller, and industrial computer.

[0030] Figure 4 for Figure 1 A schematic diagram of the image acquisition module in the diagram;

[0031] Figure 5 for Figure 4 A schematic diagram of the movable support structure. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto:

[0033] Example 1: A visual inspection device for the quality of yarn in spun roving includes an electrical control cabinet 1 and an image acquisition module 2. The image acquisition module 2 is installed above a specific station (near the drafting zone exit) of the spun roving frame 3, aligned with the running roving. The electrical control cabinet 1 is typically placed in a convenient location near the spun roving frame 3, such as... Figure 1 As shown.

[0034] Image acquisition module 2 includes a single-arm frame support, an industrial camera 205, and a strip light source 207, such as... Figure 4 As shown. The single-arm frame support includes a left support arm 201, a right support arm 211, a first metal crossbeam 202, a second metal crossbeam 203, and a third metal crossbeam 204. The left support arm 201 and the right support arm 211 are both inverted U-shaped. One side of the U-shape of the left support arm 201 extends downward to form a three-fold single support arm. The length of the first fold is 355mm, the length of the second fold is 118mm, and the third fold is provided with mounting holes and is rigidly connected to the frame of the yarn spinning roving machine 3 by bolts.

[0035] The first metal beam 202, the second metal beam 203, and the third metal beam 204 are all 455mm in length and each has a row of mounting holes. The two ends of the first metal beam 202 and the second metal beam 203 are connected to the inverted U-shaped tops of the left support arm 201 and the right support arm 211 respectively via screws, forming a rectangular frame structure. The third metal beam 204 is positioned lower than the first metal beam 202 and the second metal beam 203, and its two ends are connected to the right support arm 211 and the left support arm 201 respectively via screws (on the side of the single support arm furthest from the left support arm 201). By adjusting the position of the mounting holes connecting the first metal beam 202, the second metal beam 203, the third metal beam 204 to the left support arm 201 and the right support arm 211, the distance between the left support arm 201 and the right support arm 211 can be adjusted to accommodate different installation positions.

[0036] The first metal beam 202 and the third metal beam 204 are each equipped with a strip light source 207 via a light source moving support 209. The strip light source 207 is a commercially available finished product, such as the LTS-4BR40030 from Dongguan LeTV Automation Technology Co., Ltd.

[0037] The light source moving support 209 includes an L-shaped connector 2091 and a connecting lug 2092, such as Figure 5As shown. The connecting ear 2092 is rectangular, with two opposite sides extending downwards as ears and having screw holes for connecting the strip light source 207. The other two opposite sides also have screw holes for connecting the L-shaped connector 2091. The vertical arm of the L-shaped connector 2091 is connected to one side of the connecting ear 2092 via a locking screw. The ears on both sides of the connecting ear 2092 are fixedly connected to the strip light source 207 via screws. The angle of the strip light source 207 can be adjusted by loosening the locking screw between the L-shaped connector 2091 and the connecting ear 2092. The left and right positions of the two strip light sources 207 can be adjusted by adjusting the position of the mounting holes on the horizontal arm of the L-shaped connector 2091 connected to the first metal crossbeam 202 (or the third metal crossbeam 204). This minimizes the positional restriction on the strip light source 207 after the left support arm 201 is fixedly connected to the frame of the yarn spinning roving machine 3.

[0038] The first metal beam 202 is fixed to the horizontal arm of an L-shaped connector 2091 by screws, and the third metal beam 204 is fixed to the horizontal arm of another L-shaped connector 2091 by screws. This allows the two strip light sources 207 to be suspended below the first metal beam 202 and the third metal beam 204, respectively. By adjusting the angle between the connecting lug 2092 and the L-shaped connector 2091, the illumination fields of the two strip light sources 207 can be superimposed and converged on the yarn detection area, avoiding defects in the captured image caused by insufficient lighting. At the same time, the superposition of the illumination fields of the two strip light sources 207 can minimize the shadows caused by the light on the yarn.

[0039] The second metal crossbeam 203 is located between the first metal crossbeam 202 and the third metal crossbeam 204, and is used to mount the industrial camera 205 via the camera moving base 206. The two sides of the camera moving base 206 are connected to the second metal crossbeam 203 and the industrial camera 205 respectively by screws, maintaining a rigid connection while facilitating camera position adjustment by changing the positions of the mounting holes on the camera moving base 206 and the second metal crossbeam 203. The industrial camera 205 can be a color camera such as the MV-CS050-10GC. The industrial camera 205 is positioned higher than the two front and rear bar light sources 207, thus avoiding the influence of the light from the bar light sources 207 on the focusing and image acquisition of the industrial camera 205. The lens axis of the industrial camera 205 is perpendicular to the horizontal plane and tilted counterclockwise by 51.15 degrees, precisely focusing on the yarn detection area.

[0040] Electrical control cabinet 1 is a frame-type cabinet constructed with 2020 and 4020 aluminum profiles, and the exterior of the cabinet is covered with stainless steel plates (to show the location of the internal components). Figure 2The middle cabinet is drawn using perspective. The top surface is sloped to allow for the embedded installation of the monitor 101. The monitor 101 is fixedly connected to the top surface of the electrical control cabinet 1, as shown below. Figure 2-3 As shown.

[0041] The electrical control cabinet 1 has a stainless steel mounting panel 108 inside, and an AC socket 106 on the side for introducing external power. Both the AC socket 106 and the stainless steel mounting panel 108 are fixedly connected to the cabinet body. Inside the electrical control cabinet 1, a light source controller 112, an industrial computer 113, and a switching power supply 114 are fixedly mounted on the stainless steel mounting panel 108. The switching power supply 114 is electrically connected to the AC socket 106, the industrial computer 113, and the light source controller 112 via cables for inputting operating power. The light source controller 112 is signal-connected to the industrial computer 113 via an RS232 cable, and is also electrically connected to the industrial camera 205 and the strip light source 207 via cables to supply power to the industrial camera 205 and the strip light source 207. The industrial camera 205 is connected to the industrial computer 113 inside the electrical control cabinet 1 via an Ethernet cable and is signal-connected to the industrial computer 113 to transmit the acquired yarn images to the industrial computer 113 in real time. The monitor 101 is connected to the industrial computer 113 via a VGA cable, and the monitor 101 is connected to the industrial computer 113 for inputting video signals. The light source controller 112 is a commercially available product, such as the LTS-3DPC2460-2S from Dongguan LeTV Automation Technology Co., Ltd. The industrial computer 113 controls the opening and closing of the strip light source 207 through the light source controller 112. This is prior art and easily obtained from public channels, such as the invention "An Expandable Light Source Brightness Enhancement Control System" with publication number CN111343750B. The specific implementation process will not be described in detail in this embodiment.

[0042] The side of the electrical control cabinet 1 is provided with a cable outlet 107, and all cables are introduced through the cable outlet 107 of the electrical control cabinet 1.

[0043] Instructions for using the visual inspection device:

[0044] The image acquisition module 2 is installed near the drafting zone exit of the yarn spinning roving machine 3 using a single-arm frame bracket.

[0045] By adjusting the angle between the connecting lug 2092 and the L-shaped connector 2091, the illumination fields of the two strip light sources 207 are superimposed and converged on the yarn detection area. When the yarn spinning roving frame 3 is running, the yarn passes through the detection area at high speed. The industrial control computer 113 illuminates the strip light source 207 through the light source controller 112, and simultaneously activates the industrial camera 205 to perform high-speed image acquisition. The acquired images are transmitted to the industrial control computer 113 in real time.

[0046] Finally, it should be noted that the above examples are merely a few specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A visual inspection device for the quality of colored roving yarn, characterized in that: It includes an electrical control cabinet (1) and an image acquisition module (2); The top surface of the electrical control cabinet (1) is sloping and is equipped with a display (101), which is fixedly connected to the electrical control cabinet (1); the cabinet of the electrical control cabinet (1) is equipped with a light source controller (112) and an industrial computer (113); The image acquisition module (2) includes a single-arm frame bracket, an industrial camera (205), and a strip light source (207). The single-arm frame bracket includes a left support arm (201) and a right support arm (211), both of which are inverted U-shaped. A first metal beam (202), a second metal beam (203), and a third metal beam (204) are arranged sequentially between the left support arm (201) and the right support arm (211). The first metal beam (202) and the second metal beam (203) are at the same height and are both higher than the third metal beam (204). The first metal beam (202) and the third metal beam (204) are each connected to a strip light source (207) through a light source moving support (209). The second metal beam (203) is connected to the industrial camera (205) through a camera moving base (206). The industrial camera (205), the light source controller (112), and the display (101) are all connected to the industrial computer (113) via signals, and the bar light source (207) is electrically connected to the light source controller (112).

2. The visual inspection device for the quality of yarn-dyed roving as described in claim 1, characterized in that: The first metal beam (202), the second metal beam (203), the left support arm (201), and the right support arm (211) are connected to each other to form a rectangular frame.

3. The visual inspection device for the quality of yarn-dyed roving as described in claim 2, characterized in that: The light source movable support (209) includes an L-shaped connector (2091) and a connecting ear (2092). The two opposite sides of the connecting ear (2092) extend downward as ears. The vertical arm side of the L-shaped connector (2091) is connected to the side of the connecting ear (2092) by a locking screw. The ears on both sides of the connecting ear (2092) are fixedly connected to the strip light source (207).

4. A visual inspection device for the quality of yarn-dyed roving as described in claim 3, characterized in that: The camera moving base (206) is fixedly connected to the second metal crossbeam (203) and the industrial camera (205) on both sides respectively.

5. A visual inspection device for the quality of yarn-dyed roving as described in claim 4, characterized in that: The industrial camera (205) is positioned higher than the two bar light sources (207).

6. A visual inspection device for the quality of colored roving yarn according to claim 5, characterized in that: The left support arm (201) extends downward on one side of its U-shape to form a single support arm.

7. A visual inspection device for the quality of yarn-dyed roving as described in claim 6, characterized in that: The electrical control cabinet (1) is equipped with a stainless steel mounting panel (108), which is fixedly connected to the electrical control cabinet (1); the light source controller (112), the industrial computer (113) and the stainless steel mounting panel (108) are fixedly connected.

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