8-shaped optical cable detection device, detection method and production device

Abstract

The invention discloses an 8-shaped optical cable detection device, a detection method and a production device, and belongs to the technical field of optical cable surface defect detection.The 8-shaped optical cable detection device comprises a device body, an 8-shaped through hole is formed in the device body, and the 8-shaped through hole comprises a bearing hole, a connecting hole and a cable core hole which are sequentially connected; a plurality of displacement sensors are arranged on the inner wall of the 8-shaped through hole, at least one bearing hole, at least one connecting hole and at least one cable core hole are arranged, and each displacement sensor is arranged in a telescopic mode in the direction of the inner wall of the 8-shaped through hole. According to the 8-shaped optical cable detection device, the 8-shaped through hole is formed in the device main body, and the multiple displacement sensors are arranged on the inner wall surface of the 8-shaped through hole, so that displacement detection is carried out on the bearing part, the connecting part and the cable core part of the 8-shaped optical cable, and when the corresponding parts are bulged and the like, the displacement sensors can detect the displacement of the bearing part, the connecting part and the cable core part of the 8-shaped optical cable. The protrusion degree of the corresponding position can be captured through the displacement sensor, so that defect detection on the surface of the 8-shaped optical cable is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical cable surface defect detection, and particularly relates to an 8-shaped optical cable detection device, a detection method and a production device. Background Art

[0002] At present, there are certain technical difficulties in the appearance detection of 8-shaped optical cables. It is very difficult to ensure accurate dimensions at the 10th position between the upper and lower circular shaft parts of the 8-shaped cable. Those skilled in the art are committed to finding an appearance detection method to detect possible defects in the overall 8-shaped cable. For example, the detection of a kind of appearance defect, bulge, and timely identification and analysis of the generation of the defect bulge are of great significance for the immediate feedback of the optical cable production process. The reasons for the generation of bulges in the process are related to the mold sheath material, impurities in the material itself, and impurity accumulation at the mold head position. Timely and accurately identifying the above appearance defects helps to improve the product quality of 8-shaped optical cables.

[0003] Currently, the detection methods that can be thought of for 8-shaped optical cables, on the one hand, can draw on the detection methods of round cables. The traditional method is to use a portal sizing die, but it is not applicable to the detection of the 10th position of 8-shaped optical cables. And for the electronic detection means such as light injection and diameter detector in the three-axis system of round cables, which mainly detect the diameter uniformity of round cables by signal transmission and reception, the above methods are not applicable to non-uniformly shaped special-shaped optical cables. Therefore, the existing means cannot effectively detect the surface of 8-shaped optical cables. Summary of the Invention

[0004] In view of one or more of the above defects or improvement requirements in the prior art, the present invention provides an 8-shaped optical cable detection device to solve the problem that the existing optical cable detection device cannot effectively detect the surface defects of 8-shaped optical cables.

[0005] To achieve the above object, the present invention provides an 8-shaped optical cable detection device, which includes: A device main body, on which an 8-shaped through hole is opened, and the 8-shaped through hole includes a load-bearing hole, a connection hole and a cable core hole that are connected in sequence; A plurality of displacement sensors are arranged on the inner wall of the 8-shaped through hole, and at least one is arranged in the load-bearing hole, the connection hole and the cable core hole respectively, and each displacement sensor is telescopically arranged along the inner wall direction of the 8-shaped through hole.

[0006] As a further improvement of the present invention, the device main body includes a plurality of sub-modules that are separately arranged along the radial direction of the 8-shaped through hole, and the sub-modules are assembled to form the device main body; Each sub-module is correspondingly provided with a displacement mechanism, and the displacement mechanism is used to drive each sub-module to displace along the radial direction of the 8-shaped through hole.

[0007] As a further improvement of the present invention, the device body includes a first sub-module, a second sub-module, a third sub-module, and a fourth sub-module that are arranged in a fan shape. The first sub-module, the second sub-module, the third sub-module, and the fourth sub-module are assembled to form the device body; Wherein, at the joint end face between the first sub-module and the second sub-module, there are a first arc-shaped notch and a hole. The two first arc-shaped notches of the first sub-module and the second sub-module enclose to form the load-bearing hole; the two holes of the first sub-module and the second sub-module enclose to form the connection hole; At the joint end face between the third sub-module and the fourth sub-module, there is a second arc-shaped notch. The two second arc-shaped notches of the third sub-module and the fourth sub-module enclose to form the cable core hole.

[0008] As a further improvement of the present invention, a plurality of clamping holes are formed on the circumferential side wall of the device body facing away from the figure-eight through hole, and the plurality of clamping holes are arranged at the splicing end faces of the respective sub-modules.

[0009] As a further improvement of the present invention, a plurality of displacement sensors form a plurality of displacement sensor groups along the opening direction of the figure-eight through hole, and the plurality of displacement sensor groups at least include a first displacement sensor group and a second displacement sensor group.

[0010] As a further improvement of the present invention, the displacement sensor is a contact displacement sensor or a photoelectric sensor.

[0011] This application also includes a detection method for an eight-shaped optical cable, which uses the above-mentioned eight-shaped optical cable detection device for detection, and includes the following steps: S1. Obtain the standard outer diameters of the load-bearing part, connection part, and cable core part of the eight-shaped optical cable to be measured; S2. Select an eight-shaped optical cable detection device with a set size according to the standard outer diameters of the load-bearing part, connection part, and cable core part of the eight-shaped optical cable; S3. Sleeve the eight-shaped optical cable detection device on the outer circumference of the eight-shaped optical cable, and traction the eight-shaped optical cable along the axial direction of the cable; S4. Obtain the sensing values on the displacement sensors, and obtain the outer diameter deviation of the eight-shaped optical cable according to the sensing values on the displacement sensors; if the outer diameter deviation is not greater than the preset deviation, the eight-shaped optical cable is qualified; if the outer diameter deviation is greater than the preset deviation, the eight-shaped optical cable is unqualified.

[0012] As a further improvement of the present invention, the device body includes a first sub-module, a second sub-module, a third sub-module, and a fourth sub-module that are separately arranged. A displacement mechanism is connected to each of the first sub-module, the second sub-module, the third sub-module, and the fourth sub-module, and the first sub-module, the second sub-module, the third sub-module, and the fourth sub-module can move along the displacement mechanism in the radial direction perpendicular to the figure-eight optical cable. Step S4 specifically includes: Obtain the displacement parameters of the first sub-module, the second sub-module, the third sub-module, and the fourth sub-module, and obtain the fault types of each part of the figure-eight optical cable according to the displacement parameters of each sub-module. If the first sub-module or the second sub-module moves horizontally, there are protrusions on the surface of the connection part of the figure-eight optical cable. If the first sub-module or the second sub-module moves obliquely to the horizontal direction, there are protrusions on the surface of the load-bearing part of the figure-eight optical cable. If the third sub-module or the fourth sub-module moves perpendicular to the axial direction of the cable, there are protrusions on the surface of the cable core part of the figure-eight optical cable.

[0013] As a further improvement of the present invention, a first displacement sensor group and a second displacement sensor group are formed by multiple displacement sensors along the opening direction of the figure-eight through hole. Step S4 specifically includes: Obtain the displacement parameters of the first sub-module, the second sub-module, the third sub-module, and the fourth sub-module, and obtain the defect types on the surface of the figure-eight optical cable according to the displacement parameters of each sub-module. Obtain the displacement sensing amounts of the first displacement sensor group and the second displacement sensor group. If the difference in the displacement sensor amounts of the first displacement sensor group and the second displacement sensor group is within the set threshold, there are prism-shaped protrusions on the surface of the figure-eight optical cable. If the difference in the displacement sensing amounts of the first displacement sensor group and the second displacement sensor group is greater than the set threshold, there are dot-shaped protrusions on the surface of the figure-eight optical cable.

[0014] This application also includes a production device for a figure-eight optical cable, which includes a wire feeding part, a stranding part, an extrusion part, a cooling part, a blowing part, and the figure-eight optical cable detection device arranged in sequence.

[0015] As long as the above-mentioned improved technical features do not conflict with each other, they can be combined with each other.

[0016] Generally speaking, compared with the prior art, the beneficial effects of the above technical solutions conceived by the present invention include: (1)The figure-eight optical cable detection device of the present invention opens a figure-eight through-hole on the device main body and arranges a plurality of displacement sensors on the inner wall surface of the figure-eight through-hole to respectively detect the displacement of the load-bearing part, connection part, and cable core part of the figure-eight optical cable. When protrusions or other conditions occur in the corresponding parts, the protrusion degree and the like at the corresponding positions can be captured by the displacement sensors to realize the defect detection on the surface of the figure-eight optical cable.

[0017] (2)The figure-eight optical cable detection device of the present invention sets the device main body as a structure assembled by a plurality of sub-modules. Since the optical cable itself is relatively long and not easy to be truncated randomly, the assembled form facilitates the installation and sleeving of the figure-eight optical cable detection device on the surface of the optical cable, improving the detection efficiency. At the same time, by correspondingly arranging displacement mechanisms at each sub-module, the sub-modules are driven to move through the displacement mechanisms to correspondingly change the size of the figure-eight through-hole, realizing the detection of different models of optical cables or optical cables with different diameters by the figure-eight optical cable detection device.

[0018] (3)The figure-eight optical cable detection device of the present invention arranges a plurality of displacement sensor groups in the opening direction of the figure-eight through-hole, avoiding the situation that during the high-speed production and detection process of the cable, after the displacement sensor is lifted by the protrusion on the surface of the optical cable and before it falls, there are continuously protrusions passing through the figure-eight through-hole, resulting in misjudgment of the surface defects of the optical cable by the figure-eight optical cable detection device. By arranging the first sensor group and the second sensor group and using the displacement conditions of the two to jointly judge the surface defects of the optical cable, the accurate detection of the surface defects of the figure-eight optical cable is realized.

[0019] (4)The figure-eight optical cable detection device of the present invention sets the device main body as an assembled form of a first sub-module, a second sub-module, a third sub-module, and a fourth sub-module, and correspondingly arranges a first arc-shaped notch, a hole channel, and a second arc-shaped notch at the splicing interfaces of each sub-module. When the displacement sensors on different sub-modules have displacement offsets, the types of surface defects of the optical cable can be correspondingly sensed, realizing the accurate judgment and sensing of the surface defects of the optical cable. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the figure-eight optical cable in the embodiment of the present invention; Figure 2 is an overall structural diagram of the figure-eight optical cable detection device in one embodiment of the present invention; Figure 3 is an overall structural diagram of the figure-eight optical cable detection device in another embodiment of the present invention; Figure 4 is a plane structural diagram of the figure-eight optical cable detection device in the embodiment of the present invention; Figure 5 is a schematic flow diagram of the detection method of the figure-eight optical cable in the embodiment of the present invention.

[0021] In all the drawings, the same reference numerals denote the same technical features, specifically: 1. Device main body; 2. Displacement sensor; 3. Clamping hole; 101. First sub-module; 102. Second sub-module; 103. Third sub-module; 104. Fourth sub-module; 105. Load-bearing hole; 106. Connection hole; 107. Cable core hole. Detailed implementation manners

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] Embodiment: Please refer to Figures 1 to 5 , the figure-eight optical cable detection device in the preferred embodiment of the present invention includes a device main body 1, on which there is a figure-eight through hole. The figure-eight through hole includes a load-bearing hole 105, a connection hole 106 and a cable core hole 107 that are connected in sequence; a plurality of displacement sensors 2 are arranged on the inner wall of the figure-eight through hole, and at least one is arranged in the load-bearing hole 105, the connection part and the cable core part respectively, and each displacement sensor 2 is telescopically arranged along the inner wall direction of the figure-eight through hole.

[0028] Specifically, the figure-eight optical cable to be detected in this application includes a load-bearing part, a connection part and a cable core part. Among them, the load-bearing part includes a load-bearing structure formed by twisting multiple steel strands or FRP rods, and an outer sheath is covered on the outside. The connection part is a sling structure for connecting the load-bearing part and the cable core. The cable core part is the main part of the optical cable, and its interior includes optical fibers, sleeves, water-blocking yarns, armor structures, etc. The load-bearing hole 105 in this application is for the load-bearing part of the figure-eight optical cable to pass through, the connection hole 106 is for the connection part to pass through, and the cable core hole 107 is for the cable core part to pass through.

[0029] In the figure-eight optical cable detection device of this application, by opening a figure-eight through hole on the device main body 1 and arranging a plurality of displacement sensors 2 on the inner wall surface of the figure-eight through hole, displacement detection is respectively carried out on the load-bearing part, the connection part and the cable core part of the figure-eight optical cable. When a protrusion appears in the corresponding part, it is captured by the displacement sensors 2 at each part to realize defect detection of each part on the surface of the figure-eight optical cable. When protrusions or depressions appear on the surface of the figure-eight optical cable, the corresponding displacement sensors 2 expand and contract at the protrusion or defect part. The type of defect on the surface of the optical cable is judged by the expansion and contraction of the displacement sensors 2; and the size of the defect can be judged by the displacement amount of the displacement sensors 2 to judge whether the produced figure-eight optical cable is qualified.

[0030] Preferably, a plurality of displacement sensors 2 are evenly distributed on the circumferential side wall of the figure-eight through hole in this application. The plurality of displacement sensors 2 basically cover all the side walls of the figure-eight through hole, so that protrusions or defects at any circumferential position of the figure-eight optical cable can be detected.

[0031] Furthermore, the device body 1 in the present application includes a plurality of sub-modules that are radially split along the figure-eight through-hole, and the sub-modules are assembled to form the above-mentioned device body 1. Each sub-module is also correspondingly provided with a displacement mechanism, which is used to drive each sub-module to displace in the radial direction of the figure-eight through-hole. Correspondingly, the device body 1 is set as a combined structure of a plurality of sub-modules, so that the device body 1 can be arbitrarily assembled and sleeved on the outer periphery of the figure-eight optical cable, and any part of the figure-eight optical cable can be detected without cutting off the optical cable, greatly improving the applicable range and detection efficiency of the figure-eight optical cable detection device. Moreover, the coordinated setting of the displacement mechanism can make the distance between the sub-modules adjustable. On the premise of not affecting the accuracy of the outer diameter detection of the optical cable, by appropriately expanding or reducing the distance between the sub-modules, the detection of figure-eight optical cables with different cable diameters can be achieved.

[0032] Furthermore, as one of the specific embodiments of the present invention, the device body 1 in the present application includes a first sub-module 101, a second sub-module 102, a third sub-module 103, and a fourth sub-module 104 that are arranged in a fan shape. The above four sub-modules are assembled to form the device body 1; and at the joint end face between the first sub-module 101 and the second sub-module 102, there are a first arc-shaped notch and a hole, and the two first arc-shaped notches of the first sub-module 101 and the second sub-module 102 enclose the above-mentioned load-bearing hole 105; the two holes of the first sub-module 101 and the second sub-module 102 enclose a connection hole 106. Correspondingly, at the joint end face between the third sub-module 103 and the fourth sub-module 104, there are second arc-shaped notches, and the two second arc-shaped notches enclose a cable core hole 107. When arranging the figure-eight through-hole on the module body, since the size of the cable core part is larger than that of the load-bearing part and the connecting part, the present application sets the load-bearing hole 105 and the connection hole 106 in the upper part where the first sub-module 101 and the second sub-module 102 are located, and sets the cable core hole 107 in the lower part where the third sub-module 103 and the fourth sub-module 104 are located, so that the overall center of the figure-eight optical cable is at the center of the device body 1, which is convenient for the overall preparation of the device body 1.

[0033] Further preferably, since the core part of the figure-eight optical cable is still in the cable core part, the load-bearing part only serves for load-bearing suspension, and the connecting part only serves for connecting the load-bearing part and the cable core part. Therefore, in the actual detection process, the surface defect precision requirement of the cable core part is higher than that of the load-bearing part and the connecting part. Therefore, in this application, different displacement sensors 2 can be set at the load-bearing holes 105, connecting holes 106 and cable core holes 107, or the displacement sensors 2 at each position can be adjusted to different precisions to ensure stable detection of the surface defects of the figure-eight optical cable. Specifically, the inner diameter of the load-bearing hole 105 is 0.5-1.0 mm larger than the outer diameter of the load-bearing part of the figure-eight optical cable, the width of the connecting hole 106 is 0.8-1.5 mm larger than the width of the connecting part, and the inner diameter of the cable core hole 107 is 0.2-0.7 mm larger than the outer diameter of the cable core part.

[0034] Further preferably, the device main body 1 in this application is prepared from 45 / 40Cr and its surface is quenched to improve the fatigue strength and service life of the figure-eight optical cable detection device, etc. The hardness of the device main body 1 in this application can reach 217-255 HBS~241-286 HBS.

[0035] Further, as a preferred embodiment of the present invention, a plurality of clamping holes 3 are provided on the circumferential side wall of the device main body 1 in this application that faces away from the figure-eight through hole, and the plurality of clamping holes 3 are provided at the splicing end faces of each sub-module. Whether the device main body 1 in this application is integrally arranged or split, it needs to be fixed to facilitate stable detection of the surface defects of the figure-eight optical cable. The clamping holes 3 are used to cooperate with an external clamping and fixing mechanism to achieve stable use of the figure-eight optical cable detection device. At the same time, the size and position of the clamping holes 3 can be adjusted by the external clamping and fixing mechanism to realize the changes of the load-bearing holes 105, connecting holes 106 and cable core holes 107 in the split device main body 1 to adapt to figure-eight optical cables of different model sizes.

[0036] Further, as a preferred embodiment of the present invention, multiple displacement sensors 2 in the present application are formed into multiple groups of displacement sensors 2 along the opening direction of the figure-eight through hole. The multiple groups of displacement sensors 2 at least include a first group of displacement sensors 2 and a second group of displacement sensors 2. During the high-speed production and detection of the optical cable, when the cable transmission rate is too high, it is difficult for the displacement sensor 2 to quickly reset after contacting the surface defect of the figure-eight optical cable, resulting in misjudgment of the surface defect of a section of the optical cable by the displacement sensor 2 and deviation of the defect detection result. Therefore, the present application correspondingly sets the first group of displacement sensors 2 and the second group of displacement sensors 2. When the first group of displacement sensors 2 senses a protrusion, it proves that a defect has occurred on the surface of the figure-eight optical cable; correspondingly, the second group of displacement sensors 2 senses a protrusion; when the first group of displacement sensors 2 and the second group of displacement sensors 2 sense a protrusion simultaneously within a short period of time, it proves that the surface is a continuous prismatic protrusion; when the defect sensed at the first displacement sensor 2 disappears, it proves that the surface is a punctiform protrusion.

[0037] Further, as a preferred embodiment of the present invention, the displacement sensor 2 in the present application is a contact displacement sensor 2 or a photoelectric sensor. The contact displacement sensor 2 realizes the perception of the surface defect of the figure-eight optical cable by corresponding displacement after contacting the protrusion or depression on the surface of the figure-eight optical cable; the photoelectric sensor judges the surface defect of the figure-eight optical cable by the reception time after the light emitted to the surface of the optical cable is reflected. Correspondingly, when there is water on the surface of the figure-eight optical cable, misjudgment will occur in the defect detection of the photoelectric sensor. At this time, the displacement of each sub-module driven by the protrusion on the surface of the optical cable can be used to assist in judging whether there is a protrusion on the surface of the optical cable.

[0038] Further, the present application also includes a detection method for a figure-eight optical cable, which uses the above-mentioned figure-eight optical cable detection device for detection, and specifically includes the following steps: S1. Obtain the standard outer diameters of the load-bearing part, connection part, and cable core part of the figure-eight optical cable to be tested; here, the standard outer diameter of the figure-eight optical cable is the size of the load-bearing part, connection part, and cable core part in the actual production index.

[0039] S2. Select a figure-eight optical cable detection device with a set size according to the standard outer diameters of the load-bearing part, connection part, and cable core part of the figure-eight optical cable; correspondingly, the figure-eight optical cable detection device can directly select the device body 1 adapted to the size of the figure-eight optical cable, or adjust the settings of each sub-module through the displacement mechanism to form a device body 1 with a set size.

[0040] S3. Set the figure-eight optical cable detection device on the outer periphery of the figure-eight optical cable and traction the figure-eight optical cable along the axial direction of the cable. S4. Obtain the sensing value on the displacement sensor 2, and obtain the outer diameter deviation of the figure-eight optical cable according to the sensing value on the displacement sensor 2. If the outer diameter deviation is not greater than the preset deviation, the figure-eight optical cable is qualified; if the outer diameter deviation is greater than the preset deviation, the figure-eight optical cable is unqualified. Since the production requirements for the load-bearing part, connection part, and cable core part of the figure-eight optical cable are different, the preset deviations of the displacement sensors 2 provided at the load-bearing hole 105, connection hole 106, and cable core hole 107 also vary here.

[0041] Further, when the device main body 1 in the present application is formed by splicing the first sub-module 101, the second sub-module 102, the third sub-module 103, and the fourth sub-module 104, and a displacement mechanism is provided at each sub-module; step S4 in the present application specifically includes: Obtain the displacement parameters of the first sub-module 101, the second sub-module 102, the third sub-module 103, and the fourth sub-module 104, and obtain the fault types of each part of the figure-eight optical cable according to the displacement parameters of each sub-module; If the first sub-module 101 or the second sub-module 102 moves horizontally, there is a protrusion on the surface of the connection part of the figure-eight optical cable; if the first sub-module 101 or the second sub-module 102 moves obliquely to the horizontal direction, there is a protrusion on the surface of the load-bearing part of the figure-eight optical cable; if the third sub-module 103 or the fourth sub-module 104 swings perpendicular to the cable axis, there is a protrusion on the surface of the cable core part of the figure-eight optical cable. Specifically, taking the figure-eight optical cable arranged vertically as an example, the connection part of the figure-eight optical cable is arranged vertically. When there is a protrusion on the surface of the connection part, the protrusion squeezes the displacement sensor 2 on both sides, and at this time, the displacement sensor 2 displaces on both sides in the horizontal direction. When there is a protrusion on the surface of the load-bearing part of the figure-eight optical cable, the protrusion is arranged along the circumference of the load-bearing part, so that the protrusion gives an upward oblique force to the first sub-module 101 or the second sub-module 102, resulting in the first sub-module 101 or the second sub-module 102 moving obliquely to the horizontal direction; correspondingly, when there is a protrusion on the surface of the cable core part of the figure-eight optical cable, the outer contour of the cable core part is similar to the outer contour of the load-bearing part, and at this time, the third sub-module 103 or the fourth sub-module 104 also moves obliquely to the horizontal direction.

[0042] Further, when a first displacement sensor 2 group and a second displacement sensor 2 group are provided in the figure-eight through hole in the present application, step S4 specifically includes: Obtain the displacement parameters of the first sub-module 101, the second sub-module 102, the third sub-module 103, and the fourth sub-module 104, and obtain the defect types on the surface of the figure-eight optical cable according to the displacement parameters of each sub-module: Specifically, the displacement sensing quantities of the first displacement sensor group 2 and the second displacement sensor group 2 are obtained. If the difference in the displacement sensing quantities of the first displacement sensor group 2 and the second displacement sensor group 2 is within a set threshold, prismatic protrusions are formed on the surface of the figure-8 optical cable; if the difference in the displacement sensing quantities of the first displacement sensor group 2 and the second displacement sensor group 2 is greater than the set threshold, dot-shaped protrusions are formed on the surface of the figure-8 optical cable.

[0043] Specifically, the first displacement sensor 2 group and the second displacement sensor 2 group in the present application are arranged along the opening direction of the 8-shaped through hole, and a certain distance is left between the two, so that the detection data of the first displacement sensor 2 group and the second displacement sensor 2 group are relatively independent. When the difference in displacement sensing amount between the two is at the set threshold, it proves that the two are lifted by the bulge at the same time, which means that there is a prismatic bulge on the surface of the 8-shaped optical cable at this time; when the difference in displacement sensing amount between the two is greater than the set threshold, it proves that one is lifted, while the other continues to be close to the 8-shaped optical cable, proving that the surface of the optical cable is a dot-shaped bulge at this time. It is worth noting that when the surface of the optical cable is a dot-shaped bulge, the first displacement sensor 2 group will fall after being lifted, and the second displacement sensor 2 group will be lifted accordingly, and the two will also cause the difference in displacement sensing amount to be greater than the set threshold. When the bulge on the surface of the optical cable does not pass through the second displacement sensor 2 group, it can also be judged based on the displacement sensing amount of the subsequent first displacement sensor 2 group and the second displacement sensor 2 group.

[0044] Furthermore, based on the 8-shaped optical cable detection device and the 8-shaped optical cable detection method in this application, this application also includes a 8-shaped optical cable production device, which includes a pay-off section, a twisting section, an extrusion section, a cooling section, a blowing section and the above-mentioned 8-shaped optical cable detection device arranged in sequence. This application directly incorporates the 8-shaped optical cable detection device into the production process of the 8-shaped optical cable to achieve detection after the cable is produced, avoid unwinding detection and rewinding of the reeled cable, etc., and ensure the stability and reliability of the cable quality after cabling.

[0045] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An 8-shaped optical cable detection device, It is characterized in that include: The device body is provided with an 8-shaped through hole, and the 8-shaped through hole comprises a load-bearing hole, a connecting hole and a cable core hole connected in sequence; A plurality of displacement sensors are arranged on the inner wall of the 8-shaped through hole, and at least one is arranged in the load-bearing hole, the connecting hole and the cable core hole respectively, and each of the displacement sensors is telescopically arranged along the inner wall direction of the 8-shaped through hole.

2. The figure-8 optical cable detection device according to claim 1, It is characterized in that The device body comprises a plurality of submodules radially arranged along the 8-shaped through hole, and each of the submodules is assembled to form the device body; Each of the submodules is correspondingly provided with a displacement mechanism, and the displacement mechanism is used to drive each of the submodules to displace along the radial direction of the 8-shaped through hole.

3. The figure-8 optical cable detection device according to claim 2, It is characterized in that The device body comprises a first submodule, a second submodule, a third submodule and a fourth submodule arranged in a fan shape, wherein the first submodule, the second submodule, the third submodule and the fourth submodule are assembled to form the device body; Wherein, a first arc-shaped notch and a channel are provided at the end surface where the first submodule and the second submodule meet, and the two first arc-shaped notches of the first submodule and the second submodule are combined to form the load-bearing hole; and the two channels of the first submodule and the second submodule are combined to form the connecting hole; A second arc-shaped notch is provided at the end surface where the third submodule and the fourth submodule meet, and the two second arc-shaped notches of the third submodule and the fourth submodule are combined to form the cable core hole.

4. The figure-8 optical cable detection device according to claim 2, It is characterized in that A plurality of clamping holes are provided on the circumferential side wall of the device body away from the 8-shaped through hole, and the plurality of clamping holes are arranged at the splicing end faces of the submodules.

5. The figure-8 optical cable detection device according to any one of claims 1 to 4, It is characterized in that The plurality of displacement sensors form a plurality of displacement sensor groups along the opening direction of the 8-shaped through hole, and the plurality of displacement sensor groups at least include a first displacement sensor group and a second displacement sensor group.

6. The figure-8 optical cable detection device according to any one of claims 1 to 4, It is characterized in that The displacement sensor is a contact displacement sensor or a photoelectric sensor.

7. A method for detecting a figure-8 optical cable, comprising: using the figure-8 optical cable detection device according to any one of claims 1 to 6 for detection. It is characterized in that The steps include: S1. Obtain the standard outer diameters of the load-bearing part, the connecting part and the cable core part of the figure-8 optical cable to be tested; S2, selecting an 8-shaped optical cable detection device of set size according to the standard outer diameters of the load-bearing part, the connecting part and the cable core part of the 8-shaped optical cable; S3, placing an 8-shaped optical cable detection device on the outer periphery of the 8-shaped optical cable, and pulling the 8-shaped optical cable along the cable axis; S4. Obtain the sensing value on the displacement sensor, and obtain the outer diameter deviation of the figure-eight optical cable according to the sensing value on the displacement sensor; if the outer diameter deviation is not greater than the preset deviation, the figure-eight optical cable is qualified; if the outer diameter deviation is greater than the preset deviation, the figure-eight optical cable is unqualified.

8. The detection method of the figure-eight optical cable according to claim 7, wherein, the device body includes a first sub-module, a second sub-module, a third sub-module and a fourth sub-module which are separately arranged, and displacement mechanisms are connected to the first sub-module, the second sub-module, the third sub-module and the fourth sub-module, and the first sub-module, the second sub-module, the third sub-module and the fourth sub-module can move along the displacement mechanisms in the radial direction perpendicular to the figure-eight optical cable; The specific steps of step S4 include: Obtain the displacement parameters of the first sub-module, the second sub-module, the third sub-module and the fourth sub-module, and obtain the fault types of each part of the figure-eight optical cable according to the displacement parameters of each sub-module: If the first sub-module or the second sub-module moves horizontally, there is a protrusion on the surface of the connection part of the figure-eight optical cable; If the first sub-module or the second sub-module moves obliquely to the horizontal direction, there is a protrusion on the surface of the load-bearing part of the figure-eight optical cable; If the third sub-module or the fourth sub-module moves perpendicular to the axial direction of the cable, there is a protrusion on the surface of the cable core part of the figure-eight optical cable.

9. The detection method of the figure-eight optical cable according to claim 7, wherein, a plurality of the displacement sensors form a first displacement sensor group and a second displacement sensor group along the opening direction of the figure-eight through hole; The specific steps of step S4 include: Obtain the displacement parameters of the first sub-module, the second sub-module, the third sub-module and the fourth sub-module, and obtain the defect types on the surface of the figure-eight optical cable according to the displacement parameters of each sub-module: Obtain the displacement sensing amounts of the first displacement sensor group and the second displacement sensor group. If the difference between the displacement sensing amounts of the first displacement sensor group and the second displacement sensor group is within the set threshold, a prismatic protrusion is formed on the surface of the figure-eight optical cable; If the difference between the displacement sensing amounts of the first displacement sensor group and the second displacement sensor group is greater than the set threshold, a dot-like protrusion is formed on the surface of the figure-eight optical cable.

10. A production device for a figure-eight optical cable, wherein, it includes a wire feeding part, a stranding part, an extrusion part, a cooling part, a blowing part and the figure-eight optical cable detection device according to any one of claims 1 to 6 in sequence.

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