Yarn detection device and detection system

Abstract

The invention provides a yarn detection device and a detection system, and relates to the technical field of yarn hairiness visual detection, the yarn detection device comprises a detection module and two position stabilizing units, and the two position stabilizing units are symmetrically arranged relative to a detection area of the detection module. According to the yarn detection device, the two stabilizing units and the detection module located between the two stabilizing units are designed, the stabilizing units apply force facing the outer side to the two ends of the yarn in the detection area respectively, the force at the two ends is in a balanced state, and winding / releasing movement in the yarn production and manufacturing process is not affected; the two position stabilizing units apply force towards the outer side to the two ends of the yarn in the detection area respectively, so that the yarn in the detection area is in a stable tensioning state, in the image obtained by the detection module, the tensioning force borne by the yarn is very stable, and the reliability of the detection structure is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of yarn hairiness visual inspection technology, specifically to a yarn inspection device and inspection system. Background Technology

[0002] In the process of optical yarn inspection, in order to achieve high-precision measurement of parameters such as yarn diameter, defects and hairiness, it is necessary to ensure that the yarn is in a highly stable spatial position when passing through the optical inspection area; any transverse vibration or longitudinal sway of the yarn will cause image blurring and changes in the measurement reference, thereby seriously reducing the accuracy and reliability of the inspection results.

[0003] The winding and unwinding equipment used in yarn manufacturing does not have the ability to precisely control the yarn tension, and the yarn tension is prone to causing errors during the testing process. For example, when the yarn is taut, its diameter will be slightly smaller, and the surrounding fibers will be distributed laterally at a large angle. When the yarn is slack, its diameter will be slightly larger, the surrounding fibers will be closer to the yarn body, and the tilt angle will be reduced. This will have a certain impact on the quality of the yarn and the test results, and the accuracy of the test results cannot be guaranteed.

[0004] Both the invention patents CN 117214199 B (a yarn hairiness detection device and system) and CN 117449000 B (a yarn quality detection device and system for a spinning machine) describe the influence of yarn tension on the detection structure. They improve the accuracy of the detection results by measuring the yarn tension and introducing a compensation algorithm to identify the test results. They have a significant effect within a certain range. However, when changing to different yarn materials, the parameters need to be readjusted and measured, which makes them very limited in practical applications. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a yarn testing device and system, which solves the problem of insufficient accuracy in yarn quality testing results caused by unstable yarn tension.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A yarn detection device, comprising: A detection module; Two stabilizing units are arranged symmetrically with respect to the detection area of ​​the detection module; The stabilizing unit includes a pneumatic component configured to generate an airflow field along the yarn axis and away from the detection module. The yarn passes sequentially through the first stabilizing unit, the detection area of ​​the detection module, and the second stabilizing unit. During operation, the airflow field is used to spatially constrain the lateral vibration of the yarn passing through it, and at the same time applies a force to the yarn away from the detection module, so that the yarn segment located in the detection area remains taut and stable under the synergistic action of the two stabilizing units.

[0007] Preferably, the pneumatic component includes a hollow cylinder and an air duct assembly; The hollow cylinder includes a main body with a fine hole on the inner side. A first guide hole and a second guide hole are respectively provided on the inner sides of both ends of the main body. The second guide hole is located at the end of the main body closer to the detection module. An annular thickened block is fixedly provided on the inner edge of the second guide hole, and an annular air passage is provided on the outer side of the cylinder body and at a position corresponding to the outer side of the second guide hole; Several annularly distributed oblique holes are provided on the outer side of the cylinder body and at the position corresponding to the outer side of the thickened block. The inner end of the oblique hole is connected to the inner side of the cylinder body, and a plug is threaded onto the outer end of the oblique hole. A side opening is formed between the side of the oblique hole and the annular air passage to connect the two. An annular cover is fixedly connected to the outer side of the cylinder body to cover the annular air passage. A vertical air pipe is fixedly provided on the side of the annular cover. The airway assembly includes a transverse airway disposed between vertical airways, and the transverse airway is provided with an air inlet for connecting to an external air source.

[0008] Preferably, it further includes: an outer casing, the outer casing comprising: a base and a top cover, the base and the top cover being fastened together, and the detection module and the stabilizing unit being disposed inside the outer casing; The stabilizing unit is fixedly mounted on the base by a vertical plate; The side of the top cover has inlet and outlet ports corresponding to the end of the stabilizing unit.

[0009] Preferably, a four-axis guide structure is installed inside the housing and between the two stabilizing units; The four-axis guiding structure includes: a first set of guiding shafts fixedly connected to the base and a second set of guiding shafts located between the first set of guiding shafts. The first set of guiding shafts includes two sets of parallel guiding shafts, and the second set of guiding shafts includes two sets of parallel guiding wheels. The second set of guiding shafts can slide and adjust its position along the detection optical path direction of the detection module.

[0010] Preferably, the second set of guide shafts includes: A set of symmetrically distributed side support frames, wherein the side support frames are fixedly connected to the inner side of the base, and a horizontal plate is fixedly provided on the inner side of the side support frames; The three-layer elastic plate has steel plates as the top and bottom layers and an elastic layer as the middle layer. The three-layer elastic plate is set on a horizontal plate and is connected to the horizontal plate by a guide rod and a pin. The top of the guide rod is provided with a limiting end. The bottom of the guide rod passes through the three-layer elastic plate and the horizontal plate in sequence. The side of the horizontal plate is horizontally inserted with a pin. The side of the guide rod is provided with an elongated hole, and the pin is located inside the elongated hole. An I-beam frame is mounted on top of a three-layer elastic plate, and a pressure block and an adjusting screw are provided on top of the I-beam frame. The adjusting screw is threadedly connected to the top cover. The two sets of guide wheels of the second set of guide shafts are installed between the two I-beam frames; A beam frame is fixedly connected between the two I-beam frames, and the detection module is fixedly installed on the side of the beam frame.

[0011] Preferably, a developing plate corresponding to the detection module is fixedly connected to the side of the base.

[0012] Preferably, the bottom of the base is fixedly connected to an installation component, which includes a frame, a threaded connecting cylinder, and a T-shaped shock-absorbing pad. The threaded connecting cylinder is fixedly disposed on the inner side of the frame, and the T-shaped shock-absorbing pad is disposed on the inner side and the port of the frame, and the T-shaped shock-absorbing pad has a circular hole corresponding to the threaded connecting cylinder.

[0013] Preferably, a detection module and two stabilizing units constitute a single-strand yarn detection unit, and multiple single-strand yarn detection units are arranged inside the housing. A diverter for supplying air to the multiple single-strand yarn detection units is fixedly connected to the top of the housing.

[0014] A yarn detection system, comprising: Yarn testing device; A data processing unit communicatively connected to the yarn detection device, the data processing unit being configured to identify yarn defects and calculate quality indicators based on the output signal of the yarn detection device; And an output unit connected to the data processing unit for outputting quality detection results.

[0015] This invention provides a yarn detection device and system. It has the following advantages: This invention designs two stabilizing units and a detection module located between the two stabilizing units. The stabilizing units apply outward forces to both ends of the yarn in the detection area, and the forces at both ends are in a balanced state, which does not affect the winding / unwinding movement during the yarn production process. Furthermore, the two stabilizing units apply outward forces to both ends of the yarn in the detection area, keeping the yarn in a stable tension state. In the image acquired by the detection module, the tension force on the yarn is very stable, ensuring the reliability of the detection structure.

[0016] This invention designs a channel-restricted airflow field. During the flow of this airflow field, it is used to spatially constrain the lateral vibration of the yarn passing through it, ensuring the stability of the yarn. At the same time, the outward-blowing airflow can remove adhesive substances from the yarn wall, ensuring that the detection can operate stably for a long time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the principle of a yarn detection device proposed in this invention; Figure 2 This is a perspective view of a yarn detection device proposed in this invention; Figure 3 This is a front view of a yarn detection device proposed in this invention; Figure 4 for Figure 3 Cross-sectional view of section line AA in the middle; Figure 5 for Figure 4 Enlarged view of section B in the middle; Figure 6 This is a 1 / 4 sectional view of the hollow cylinder of a yarn detection device proposed in this invention; Figure 7 for Figure 6 Enlarged view of a portion at point C; Figure 8 This is a diagram illustrating the internal structure of the hollow cylinder of a yarn detection device proposed in this invention. Figure 9 This is a three-dimensional schematic diagram of the bottom view of the base of a yarn detection device proposed in this invention; Figure 10 This is a three-dimensional schematic diagram of the base of a yarn detection device proposed in this invention from a top view. Figure 11 This is an exploded view of the four-axis guide structure of a yarn detection device proposed in this invention.

[0018] Among them, 1. Hollow cylinder; 101. Cylinder body; 102. Fine hole; 103. First guide hole; 104. Second guide hole; 105. Thickened block; 106. Annular air passage; 107. Inclined hole; 108. Plug; 109. Side opening; 1010. Annular cover; 1011. Vertical air pipe; 1012. Horizontal air pipe; 2. Detection module; 201. Beam frame; 3. Air passage assembly; 4. Outer shell; 401. Base; 402. Top cover; 402a. Inlet / outlet port; 5. Mounting components; 501. Frame components; 502. Threaded connecting cylinder; 503. T-shaped shock-absorbing pad; 6. Diverter components; 7. Vertical plate components; 8. Four-axis guide structure; 801. First group of guide shafts; 802. Second group of guide shafts; 802a. Side support frame; 802b. Horizontal plate; 802c. Three-layer elastic plate; 802d. Guide rod; 802e. Pin; 802f. I-beam frame; 802g. Guide wheel components; 802h. Pressure block; 802i. Adjusting screw; a. Yarn. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] like Figures 1-11 As shown, this embodiment of the invention relates to the field of visual inspection of yarn hairiness, and provides a yarn inspection device, which includes: a detection module 2 and two stabilization units.

[0021] Two stabilizing units are symmetrically arranged relative to the detection area of ​​the detection module 2. Yarn a passes through the first stabilizing unit, the detection area of ​​the detection module 2, and the second stabilizing unit in sequence. The detection module 2 uses a high-resolution, high-frame-rate industrial camera, such as the DFK 33GX264e series CMOS camera from The Imaging Source in Germany, or the VC-50MX-M / C series line scan camera from Vieworks in Japan; it can also be used with a high-brightness, uniform LED linear light source. The detection module 2 is used to acquire image data of the yarn a located between the two stabilizing units for analyzing the quality of yarn a.

[0022] like Figure 1As shown, the stabilizing unit includes a hollow cylinder 1 and an air duct assembly 3. The air duct assembly 3 introduces gas through the hollow cylinder 1, and its configuration is such that it generates an airflow field along the axial direction of yarn a and away from the detection module 2. During operation, the airflow field is used to spatially constrain the lateral vibration of the yarn passing through it, and at the same time applies a force to the yarn away from the detection module 2, so that the yarn segment located in the detection area remains taut and stable under the synergistic effect of the two stabilizing units.

[0023] In the yarn detection device of this embodiment, two stabilizing units apply outward forces to both ends of yarn a in the detection area. The forces at both ends are in a balanced state, which does not affect the winding / unwinding movement during yarn production. Furthermore, the two stabilizing units apply outward forces to both ends of yarn a in the detection area, keeping yarn a in a stable tension state. In the image acquired by the detection module 2, the tension force on yarn a is very stable, ensuring the reliability of the detection results. The yarn detection device designed in this embodiment is basically unaffected by the external yarn movement process and does not rely on the precise control of yarn tension by the winding and unwinding equipment, making it more versatile.

[0024] In one embodiment, the pneumatic component includes a hollow cylinder 1 and an air passage assembly 3.

[0025] like Figures 5-8 As shown, the hollow cylinder 1 includes a main body 101. A fine hole 102 is provided on the inner side of the main body 101. The diameter of the fine hole 102 is 10-20 times the diameter of the yarn. A first guide hole 103 and a second guide hole 104 are respectively provided on the inner sides of both ends of the main body 101. Both the first guide hole 103 and the second guide hole 104 are smooth conical hole structures. The second guide hole 104 is located at the end of the main body 101 closest to the detection module 2. Gas enters through the second guide hole 104 and flows towards the fine hole 102 and the first guide hole 103, forming an airflow field away from the detection area. A [missing information - likely a device or component] is fixedly provided on the inner edge of the second guide hole 104. An annular thickened block 105 is provided. An annular air passage 106 is provided on the outer side of the cylinder body 101 and at the position corresponding to the outer side of the second guide hole 104. Several annularly distributed oblique holes 107 are provided on the outer side of the cylinder body 101 and at the position corresponding to the outer side of the thickened block 105. The inner end of the oblique hole 107 is connected to the inner side of the cylinder body 101. A plug 108 is threadedly installed on the outer end of the oblique hole 107. A side opening 109 is formed between the side of the oblique hole 107 and the annular air passage 106 to connect the two. An annular cover 1010 is fixedly connected to the outer side of the cylinder body 101 to cover the annular air passage 106. A vertical air pipe 1011 is fixedly provided on the side of the annular cover 1010.

[0026] The airway assembly 3 includes a transverse airway 1012 disposed between vertical airways 1011, and the transverse airway 1012 is provided with an air inlet for connecting to an external air source.

[0027] External air enters through the inlet of the transverse air pipe 1012 and flows towards both ends along the transverse air pipe 1012 to supply air to the two stabilizing units. This ensures that the air fields formed by the two stabilizing units are similar (in opposite directions). The airflow flows into the inner side of the annular cover 1010 through the vertical air pipe 1011, and then into the interior of the annular air passage 106. It is evenly dispersed through the side opening 109 and enters the inclined hole 107. From the bottom end of the inclined hole 107, it enters the second guide hole 104 and flows along the inner wall of the second guide hole 104 towards the fine hole 102. When the gas passes through the fine hole 102, the gas velocity increases and the pressure decreases. Based on the Bernoulli effect, the yarn is constrained to the center of the fine hole 102. When the yarn deviates from the center of the fine hole 102, the yarn is stabilized by the airflow and returns to the center of the fine hole 102, forming a structure similar to an "air bearing" to ensure the radial stability of the yarn.

[0028] In one embodiment, an outer shell 4 is also designed to enclose the detection module 2 and the stabilizing unit. The outer shell 4 can provide an installation position for the detection module 2 and the stabilizing unit, and can ensure that the detection area of ​​the detection module 2 is not affected by the external environment.

[0029] The outer casing 4 includes a base 401 and a top cover 402. The base 401 and the top cover 402 are fastened and fixedly installed. Generally, the base 401 is fixedly installed on the yarn manufacturing equipment, and the top cover 402 is fixedly installed on the base 401.

[0030] For example, the stabilizing unit is fixedly installed on the base 401 by the upright plate 7. The upright plate 7 is fixedly connected to the base 401, which facilitates the horizontal installation of the cylindrical stabilizing unit. The side of the upper cover 402 is provided with an inlet / outlet port 402a corresponding to the end of the stabilizing unit. The inlet / outlet port 402a is located on the left and right sides of the upper cover 402 for yarn to enter and exit.

[0031] In one embodiment, in order to further stabilize the yarn a located in the detection area, a four-axis guide structure 8 is installed inside the housing 4 and between the two stabilizing units.

[0032] The four-axis guiding structure 8 includes: a first set of guide shafts 801 fixedly connected to the base 401 and a second set of guide shafts 802 located between the first set of guide shafts 801. The first set of guide shafts 801 includes two sets of parallel guide shafts, and the second set of guide shafts 802 includes two sets of parallel guide wheel parts 802g. The second set of guide shafts 802 can slide and adjust its position along the detection optical path direction of the detection module 2.

[0033] like Figure 11As shown, when the yarn is threaded, the second set of guide shafts 802 is adjusted upwards. At this time, there is a vertical gap between the first set of guide shafts 801 and the second set of guide shafts 802, which allows the yarn to pass through. When the user adjusts the second set of guide shafts 802 downwards, the second set of guide shafts 802 pushes the yarn located between the first set of guide shafts 801 downwards, so that the yarn passes above the first set of guide shafts 801 and below the second set of guide shafts 802. The surface of the guide shaft is made of a rotatable roller, and the surface of the guide wheel 802g is also made of a rotatable roller. This can avoid the problem of the yarn being suspended for too long and jumping.

[0034] In one embodiment, the second set of guide shafts 802 includes: a set of symmetrically distributed side support frames 802a, a three-layer elastic plate 802c, and an I-beam frame 802f.

[0035] The side support frame 802a is fixedly connected to the inner side of the base 401. A horizontal plate 802b is fixedly installed on the inner side of the side support frame 802a. The upper and lower layers of the three-layer elastic plate 802c are steel plates, and the middle layer is an elastic layer. The three-layer elastic plate 802c is installed on the horizontal plate 802b and is connected to the horizontal plate 802b by a guide rod 802d and a pin 802e. The top of the guide rod 802d is provided with a limiting end, and the bottom of the guide rod 802d passes through the three-layer elastic plate 802c in sequence. A horizontal plate 802b has a pin 802e inserted laterally on its side. A guide rod 802d has an elongated hole on its side, and the pin 802e is located inside the elongated hole. An I-shaped frame 802f is mounted above a three-layer elastic plate 802c. A pressure block 802h and an adjusting screw 802i are provided on the upper part of the I-shaped frame 802f. The adjusting screw 802i is threadedly connected to the upper cover 402. Two sets of guide wheels 802g of the second set of guide shafts 802 are installed between the two I-shaped frames 802f.

[0036] By rotating the adjusting screw 802i, the adjusting screw 802i engages with the threaded upper cover 402, causing the bottom end of the adjusting screw 802i to press down on the pressure block 802h. The pressure block 802h presses down on the three-layer elastic plate 802c, compressing the three-layer elastic plate 802c and causing the I-beam frame 802f to move downward. This, in turn, drives the two sets of guide wheels 802g to move downward synchronously. The two adjusting screws 802i on both sides are adjusted slowly in a synchronous or gradual manner.

[0037] A beam frame 201 is fixedly connected between the two I-beam frames 802f. The detection module 2 is fixedly installed on the side of the beam frame 201. Multiple detection modules 2 can be installed on the long beam frame 201.

[0038] In one embodiment, a developing plate corresponding to the detection module 2 is fixedly connected to the side of the base 401. The developing plate is a low-reflection plate with a treated surface, and is generally a non-metallic plate, which reduces the reflection of the optical fiber.

[0039] In one embodiment, a mounting component 5 is fixedly connected to the bottom of the base 401. The mounting component 5 includes a frame 501, a threaded connecting cylinder 502, and a T-shaped shock-absorbing pad 503. The threaded connecting cylinder 502 is fixedly disposed on the inner side of the frame 501, and the T-shaped shock-absorbing pad 503 is disposed on the inner side and the port of the frame 501. The T-shaped shock-absorbing pad 503 has a circular hole corresponding to the threaded connecting cylinder 502.

[0040] The T-type shock absorber 503 is made of elastic material. When installed, it is the part that directly contacts the outer shell of the yarn production equipment, playing a role in buffering and shock absorption, and can effectively avoid the impact of external vibration on the measurement.

[0041] In one embodiment, a detection module 2 and two stabilizing units constitute a single-strand yarn detection unit. Multiple single-strand yarn detection units are arranged inside the housing 4. A diverter 6 for supplying air to multiple single-strand yarn detection units is fixedly connected to the top of the housing 4. This enables simultaneous detection of multiple yarns and improves detection efficiency. Example

[0042] This embodiment provides a yarn inspection system, including: a yarn inspection device as described in Embodiment 1; a data processing unit communicatively connected to the yarn inspection device, the data processing unit being configured to identify yarn defects and calculate quality indicators based on the output signal of the yarn inspection device; and an output unit connected to the data processing unit for outputting quality inspection results.

[0043] The tension of the yarn in the detection area is stabilized by the two stabilizing units of the yarn detection device in Embodiment 1, thereby ensuring the reliability of the detection structure.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn detection device, comprising: One detection module (2); Two stabilizing units are arranged symmetrically with respect to the detection area of ​​the detection module (2); The stabilizing unit includes a pneumatic component configured to generate an airflow field along the axial direction of the yarn (a) and away from the detection module (2); The yarn (a) passes sequentially through the first stabilizing unit, the detection area of ​​the detection module (2), and the second stabilizing unit; During operation, the airflow field is used to spatially constrain the lateral vibration of the yarn passing through it, and at the same time applies a force to the yarn against the detection module (2), so that the yarn segment located in the detection area remains taut and stable under the synergistic effect of the two stabilizing units.

2. The yarn detection device according to claim 1, characterized in that: The pneumatic component includes a hollow cylinder (1) and an air duct assembly (3); The hollow cylinder (1) includes a cylinder body (101), the inner side of the cylinder body (101) is provided with a fine hole (102), and the inner sides of both ends of the cylinder body (101) are respectively provided with a first guide hole (103) and a second guide hole (104), the second guide hole (104) being located at one end of the cylinder body (101) near the detection module (2); An annular thickened block (105) is fixedly provided on the inner edge of the second guide hole (104), and an annular air passage (106) is provided on the outer side of the cylinder body (101) and at the position corresponding to the outer side of the second guide hole (104). A plurality of annularly distributed oblique holes (107) are provided on the outer side of the cylinder body (101) and at a position corresponding to the outer side of the thickened block (105). The inner end of the oblique hole (107) is connected to the inner side of the cylinder body (101). A plug (108) is threaded onto the outer end of the oblique hole (107). A side opening (109) is formed between the side of the oblique hole (107) and the annular air passage (106). An annular cover (1010) covering the annular air passage (106) is fixedly connected to the outer side of the cylinder body (101). A vertical air pipe (1011) is fixedly provided on the side of the annular cover (1010). The airway assembly (3) includes a transverse airway (1012) disposed between vertical airways (1011), and the transverse airway (1012) is provided with an air inlet for connecting to an external air source.

3. The yarn detection device according to claim 1, characterized in that, Also includes: The outer casing (4) includes: a base (401) and a top cover (402). The base (401) and the top cover (402) are fastened together. The detection module (2) and the stabilizing unit are both located inside the outer casing (4). The stabilizing unit is fixedly installed on the base (401) by means of the upright plate (7); The side of the top cover (402) is provided with an inlet / outlet port (402a) corresponding to the end of the stabilizing unit.

4. The yarn detection device according to claim 3, characterized in that: A four-axis guide structure (8) is installed inside the outer casing (4) and between the two stabilizing units. The four-axis guide structure (8) includes: a first set of guide shafts (801) fixedly connected to the base (401) and a second set of guide shafts (802) located between the first set of guide shafts (801). The first set of guide shafts (801) includes two sets of parallel guide shafts, and the second set of guide shafts (802) includes two sets of parallel guide wheel components (802g). The second set of guide shafts (802) can slide and adjust its position along the detection optical path direction of the detection module (2).

5. The yarn detection device according to claim 4, characterized in that: The second set of guide shafts (802) includes: A set of symmetrically distributed side support frames (802a) are fixedly connected to the inner side of the base (401), and a horizontal plate (802b) is fixedly provided on the inner side of the side support frame (802a). The three-layer elastic plate (802c) has steel plates as the upper and lower layers and an elastic layer as the middle layer. The three-layer elastic plate (802c) is set on a horizontal plate (802b) and is connected to the horizontal plate (802b) by a guide rod (802d) and a pin (802e). The top of the guide rod (802d) is provided with a limiting end, and the bottom of the guide rod (802d) passes through the three-layer elastic plate (802c) and the horizontal plate (802b) in sequence. The pin (802e) is inserted laterally on the side of the horizontal plate (802b), and the side of the guide rod (802d) has an elongated hole, and the pin (802e) is located inside the elongated hole. An I-beam frame (802f) is mounted on top of a three-layer elastic plate (802c), and a pressure block (802h) and an adjusting screw (802i) are provided on top of the I-beam frame (802f). The adjusting screw (802i) is threadedly connected to the top cover (402). The two sets of guide wheels (802g) of the second set of guide shafts (802) are installed between the two I-beam frames (802f); A beam frame (201) is fixedly connected between the two I-beam frames (802f), and the detection module (2) is fixedly installed on the side of the beam frame (201).

6. The yarn detection device according to claim 5, characterized in that: The base (401) has a developing plate fixedly connected to the side, which corresponds to the detection module (2).

7. A yarn detection device according to claim 3, characterized in that: The bottom of the base (401) is fixedly connected to an installation component (5). The installation component (5) includes a frame (501), a threaded connecting cylinder (502), and a T-shaped shock-absorbing pad (503). The threaded connecting cylinder (502) is fixedly installed on the inner side of the frame (501), and the T-shaped shock-absorbing pad (503) is installed on the inner side and port of the frame (501). The T-shaped shock-absorbing pad (503) has a round hole corresponding to the threaded connecting cylinder (502).

8. A yarn detection device according to claim 3, characterized in that: A detection module (2) and two stabilizing units constitute a single-strand yarn detection unit. Multiple single-strand yarn detection units are provided inside the outer casing (4). A diverter (6) for supplying air to multiple single-strand yarn detection units is fixedly connected to the top of the outer casing (4).

9. A yarn detection system, characterized in that, include: The yarn detection device as described in any one of claims 1-8; A data processing unit communicatively connected to the yarn detection device, the data processing unit being configured to identify yarn defects and calculate quality indicators based on the output signal of the yarn detection device; And an output unit connected to the data processing unit for outputting quality detection results.

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