Optical cable surface detection device

Abstract

A kind of optical cable surface detection device, including pedestal and being provided with primary detection mechanism and secondary detection mechanism in top, primary detection mechanism includes primary detection base and primary detection mould, mould placing groove is recessed on primary detection base, and first optical cable transmission through-hole is opened in the center of groove bottom, primary detection mould is placed in mould placing groove and is provided with optical cable detection through-hole in the center, secondary detection mechanism includes secondary detection base and multiple detection components, secondary detection base is provided with second optical cable transmission through-hole, multiple detection components are evenly distributed and are arranged on secondary detection base, one end is fixedly connected with secondary detection base, the other end is inserted into secondary detection base and is connected with detection abutting piece by elastic expansion component.The primary detection mechanism in the application carries out rough detection to optical cable surface, is used to filter the larger bulge on optical cable surface, multiple dynamic detection wheels in secondary detection mechanism are arranged in phase and are closely combined with optical cable surface to carry out fine detection, and detection coverage is wide.

Description

Technical Field

[0001] This invention relates to the field of optical cable testing technology, and more specifically to an optical cable surface testing device. Background Technology

[0002] Optical cables are mainly composed of optical fibers, plastic protective sheaths, and plastic outer sheaths. During the extrusion of the optical cable sheath, uneven core size, abnormal core laying frame, or unstable extrusion can easily cause bulges on the surface of the optical cable, affecting its appearance. If the bulges are not detected in time, they will be squeezed during subsequent optical cable production processes, increasing fiber attenuation, reducing product quality, and seriously affecting the use of the optical cable.

[0003] Current methods for detecting surface bulges in optical cables primarily employ light source detection and mechanical inspection. Light source detection typically uses light rays to inspect the cable surface or relies on visual inspection. The more fiber optic axes within the cable, the larger the detection coverage area, but also the higher the cost. Furthermore, light source detection is significantly affected by the surrounding environment, resulting in a high false alarm rate and relatively low accuracy. Mechanical inspection generally works in conjunction with photoelectric switches or other electronic detection structures. Each time the cable specification changes, a corresponding mold must be replaced simultaneously, leading to frequent and cumbersome changes, making it unsuitable for detecting surface bulges in optical cables of different specifications. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an optical cable surface inspection device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A surface inspection device for optical cables includes a base, on the top of which a primary inspection mechanism and a secondary inspection mechanism are sequentially arranged along the transmission direction of the optical cable.

[0007] The primary testing mechanism includes a primary testing base and a primary testing mold. The primary testing base has a mold placement groove recessed on its side facing the secondary testing mechanism, and a first optical cable transmission through hole is formed at the center of the bottom of the mold placement groove along the optical cable transmission direction. The primary testing mold is placed in the mold placement groove, and an optical cable testing through hole coaxially arranged with the first optical cable transmission through hole is formed at its center.

[0008] The secondary detection mechanism includes a secondary detection base and multiple detection components. The secondary detection base has a second optical cable transmission through-hole coaxially arranged with the first optical cable transmission through-hole along the optical cable transmission direction. The interior of the secondary detection base is provided with an optical cable detection chamber communicating with the second optical cable transmission through-hole. The multiple detection components are evenly distributed on the secondary detection base, with one end fixedly connected to the secondary detection base and the other end extending into the optical cable detection chamber and connected to a detection abutment through an elastic telescopic component. The vertical projections of the multiple detection abutments on the secondary detection base along the optical cable transmission direction are arranged around the circumference of the optical cable.

[0009] Preferably, the primary detection mold has a multi-lobed structure and is composed of at least two detection mold units. Each detection mold unit is connected to the bottom of the mold placement groove by a strong magnet so that the primary detection mold is placed in the mold placement groove.

[0010] Preferably, the side of the primary detection base facing the secondary detection mechanism is further recessed with a detection mold receiving groove. The mold placement groove is recessed at the center of the bottom of the detection mold receiving groove. The top surface of the detection mold receiving groove is covered with a groove top cover plate. A cover plate through hole is opened at the center of the groove top cover plate. The cover plate through hole is coaxially arranged with the first optical cable transmission through hole and has the same specifications.

[0011] Preferably, the top of the primary detection base is also provided with a detection mold sensor, one end of which extends into the detection mold receiving groove.

[0012] Preferably, the multiple detection components are arranged in a radially symmetrical manner to form multiple pairs of detection component units and are staggered along the optical cable transmission direction on the secondary detection base, or multiple detection components are staggered along the optical cable transmission direction on the secondary detection base.

[0013] Preferably, the detection component is a displacement sensor. The secondary detection base has multiple fixed through holes communicating with the optical cable detection chamber. Each fixed through hole is fixedly connected to the displacement sensor by a screw sleeve. The end of the displacement sensor not connected to the fixed through hole extends into the optical cable detection chamber. The elastic telescopic component includes a telescopic rod and a spring. One end of the telescopic rod is fixedly connected to the displacement sensor, and the other end is fixedly connected to the detection abutment. The telescopic rod has a radially extending abutment platform on its body near the detection abutment. The spring is sleeved on the telescopic rod, and its two ends are fixedly connected to or in contact with the displacement sensor and the abutment platform, respectively.

[0014] Preferably, the detection abutment is a dynamic detection wheel. The circumferential surface of the dynamic detection wheel is concave inward along its radial direction and has an arc-shaped abutment surface that contacts the surface of the optical cable. The dynamic detection wheel is rotatably mounted on a wheel frame and is fixedly connected to the telescopic rod through the wheel frame. The ends of the multiple dynamic detection wheels that are close to each other are arranged around the circumference of the optical cable along the vertical projection of the optical cable transmission direction on the secondary detection base.

[0015] Preferably, an optical cable stabilizing device is provided between the primary detection mechanism and the secondary detection mechanism, and at the rear end of the secondary detection mechanism along the optical cable transmission direction. The optical cable stabilizing device includes a stabilizing base, a guide wheel, and a pressure wheel. The stabilizing base is vertically disposed on the top of the base. The guide wheel and the pressure wheel are rotatably disposed on the stabilizing base. The guide wheel and the pressure wheel are arranged vertically against each other and there is an optical cable transmission gap between them. The optical cable transmission gap is coaxially disposed at the same height as the first optical cable transmission through hole and the second optical cable transmission through hole.

[0016] Preferably, the base is equipped with a controller, and the top of the base is also equipped with a display screen. The controller is connected to the primary detection mechanism, the secondary detection mechanism, the optical cable stabilization device, and the display screen.

[0017] Compared with existing technologies, the optical cable surface inspection device provided by this invention performs a coarse inspection of the optical cable surface through a primary inspection mechanism to filter out large bulges on the cable surface and avoid damage to subsequent equipment. Then, a secondary inspection mechanism uses multiple dynamically rotating detection wheels arranged in a staggered pattern to closely adhere to the optical cable surface for fine inspection. Bulges on the cable surface cause the corresponding dynamic detection wheels to move, allowing displacement sensors to receive the displacement changes and the controller to generate a surface curve of the optical cable, thereby automatically identifying surface defects. For conventional optical cables, the secondary inspection mechanism achieves a high degree of contact with the cable surface, resulting in wider inspection coverage and reducing blind spots. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the structure of an optical cable surface inspection device provided by the present invention;

[0020] Figure 2 An explosion diagram for a Class A testing institution;

[0021] Figure 3 A schematic diagram of the structure of a primary testing facility after the top cover plate of the tank has been removed;

[0022] Figure 4 This is an exploded view of one of the testing components and the secondary testing base in a secondary testing facility;

[0023] Figure 5 This is a side view of a secondary testing facility;

[0024] Figure 6 for Figure 5 Cross-sectional view.

[0025] Explanation of reference numerals and components in the accompanying drawings:

[0026] 1. Base; 2. Primary testing mechanism; 3. Optical cable stabilization device; 4. Secondary testing mechanism; 5. Optical cable; 6. Display screen;

[0027] 201. Primary detection base; 202. Primary detection mold; 203. Detection mold sensor; 204. Mold placement slot; 205. Detection mold receiving slot; 206. First optical cable transmission through hole; 207. Slot top cover plate; 208. Cover plate through hole; 209. Optical cable detection through hole; 210. Strong magnet;

[0028] 301. Stabilizing base; 302. Guide wheel; 303. Pressure wheel;

[0029] 401. Secondary detection base; 402. Second optical cable transmission through hole; 403. Displacement sensor; 404. Fixing through hole; 405. Screw sleeve; 406. Telescopic rod; 407. Spring; 408. Support platform; 409. Dynamic detection wheel; 410. Arc-shaped support surface; 411. Wheel frame. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described through specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] See Figures 1-6As shown, an optical cable surface inspection device includes a base 1. A controller (not shown) is installed inside the base 1. A primary inspection mechanism 2, an optical cable stabilizing device 3, and a secondary inspection mechanism 4 are sequentially arranged on the top of the base 1 along the optical cable transmission direction. The primary inspection mechanism 2 is used for coarse inspection and filtering of larger bulges on the surface of the optical cable 5 to prevent damage to the equipment. The secondary inspection mechanism 4 is used for fine inspection, i.e., inspecting regular bulges on the surface of the optical cable 5. The optical cable stabilizing device 3, located between the primary and secondary inspection mechanisms 2 and 4, ensures that the optical cable 5, after coarse inspection, can smoothly enter the secondary inspection mechanism 4. The optical cable stabilizing device 3, located at the rear end of the secondary inspection mechanism 4, ensures that the optical cable 5, after being inspected by this device, smoothly enters the next production station.

[0032] In addition, a display screen 6 is installed on the top of the base 1. The controller inside the base 1 is connected to the first-level detection mechanism 2, the second-level detection mechanism 4, the optical cable stabilizing device 3 and the display screen 6, and displays the relevant information and data feedback on the display screen 6 in real time.

[0033] The following is a detailed description of each of the above-mentioned mechanical components:

[0034] The primary testing mechanism 2 includes a primary testing base 201, a primary testing mold 202, and a testing mold sensor 203. The primary testing base 201 has a stepped groove structure recessed on the side facing the secondary testing mechanism 4. The stepped groove structure consists of a mold placement groove 204 and a testing mold receiving groove 205 along the optical cable transmission direction. The two are coaxially arranged, that is, the mold placement groove 204 is recessed at the center of the bottom of the testing mold receiving groove 205. The mold placement groove 204 has a first optical cable transmission through hole 206 at the center of the bottom of the groove along the optical cable transmission direction. The top surface of the mold receiving groove 205 is covered with a groove top cover plate 207. A cover plate through hole 208 is opened at the center of the groove top cover plate 207. The cover plate through hole 208 and the first optical cable transmission through hole 206 are coaxially arranged and have the same specifications. The optical cables 5 enter the first-level detection mechanism 2 through the first optical cable transmission through hole 206 and then pass out of the first-level detection mechanism 2 through the cover plate through hole 208 and enter the optical cable stabilizing device 3.

[0035] The primary detection mold 202 is placed within the mold placement groove 204, and a fiber optic cable detection through-hole 209, coaxially aligned with the first fiber optic cable transmission through-hole 206, is formed at its center to allow the fiber optic cable 5 to smoothly enter the primary detection mold 202. The primary detection mold 202 has a multi-lobed structure and is composed of at least two detection mold units assembled together. In this embodiment, the primary detection mold 202 is a ring structure formed by assembling two detection mold units, i.e., semi-circular arc blocks, with the central hole of the ring structure being the aforementioned fiber optic cable detection through-hole 209. The two detection mold units are attracted and connected to the bottom of the mold placement groove 204 by a strong magnet 210, allowing the primary detection mold 202 to be placed within the mold placement groove 204. The detection mold sensor 203 is located on the top of the primary detection base 201 and extends into the detection mold receiving groove 205.

[0036] Optical cable 5 enters the primary inspection mechanism 2 through the first optical cable transmission through-hole 206. If there is a large bulge on the surface of optical cable 5, making the overall outer diameter of optical cable 5 larger than the optical cable inspection through-hole 209, optical cable 5 cannot pass smoothly through the primary inspection mold 202. As optical cable 5 continues to transmit, the force exerted by the bulge on it on the two inspection mold units exceeds the attraction force of the strong magnet 210. At least one inspection mold unit is carried out of the mold placement groove 204 by optical cable 5 and falls into the inspection mold receiving groove 205, where it is detected by the inspection mold sensor 203. Subsequently, the controller provides real-time feedback to the display screen 6 and controls the subsequent production line to stop, so that the staff can promptly inspect the surface of the optical cable.

[0037] The secondary testing mechanism 4 includes a secondary testing base 401 and multiple testing components. The secondary testing base 401 has a second optical cable transmission through-hole 401 coaxially arranged with the first optical cable transmission through-hole 206 along the optical cable transmission direction. In addition, the optical cable stabilizing device 3 includes a stabilizing base 301, a guide wheel 302, and a pressure wheel 303. The stabilizing base 301 is vertically arranged on the top of the machine base 1. The guide wheel 302 and the pressure wheel 303 are rotatably arranged on the stabilizing base 301. The guide wheel 302 and the pressure wheel 303 are arranged vertically against each other and there is an optical cable transmission gap (not shown in the figure) between them. In order to facilitate the smooth entry of the optical cable 5 from the primary testing mechanism 2 into the secondary testing mechanism 4 and from the secondary testing mechanism 4 into the subsequent production station, the optical cable transmission gap between the guide wheel 302 and the pressure wheel 303 needs to be set to be coaxial with the first optical cable transmission through-hole 206 and the second optical cable transmission through-hole 402 at the same height.

[0038] The secondary detection base 401 has an optical cable detection chamber that communicates with the second optical cable transmission through hole 402. Multiple detection components are evenly distributed on the secondary detection base 401, with one end fixedly connected to the secondary detection base 401 and the other end extending into the optical cable detection chamber and connected to a detection abutment through an elastic telescopic component. The vertical projection of the multiple detection abutments on the secondary detection base 401 along the optical cable transmission direction is arranged around the circumference of the optical cable 5.

[0039] In this embodiment, the detection component is a displacement sensor 403. The secondary detection base 401 has multiple fixed through holes 404 communicating with the optical cable detection chamber. Each fixed through hole 404 is fixedly connected to a displacement sensor 403 via a threaded sleeve 405. The end of the displacement sensor 403 not connected to the fixed through hole 404 extends into the optical cable detection chamber. The elastic telescopic component includes a telescopic rod 406 and a spring 407. One end of the telescopic rod 406 is fixedly connected to the displacement sensor 403, and the other end is fixedly connected to a detection abutment. Abutment platform 408 extends radially from the rod body of the telescopic rod 406 near the detection abutment. The spring 407 is sleeved on the telescopic rod 406, and its two ends are fixedly connected to or in contact with the displacement sensor 403 and the abutment platform 408, respectively. The detection abutment is a dynamic detection wheel 409. The circumferential surface of the dynamic detection wheel 409 is concave inward along its radial direction and has an arc-shaped abutment surface 410 that contacts the surface of the optical cable 5. The dynamic detection wheel 409 is rotatably mounted on a wheel frame 411 and is fixedly connected to the telescopic rod 406 through the wheel frame 411. The vertical projection of the ends of multiple dynamic detection wheels 409 that are close to each other along the optical cable transmission direction on the secondary detection base 401 is arranged around the circumference of the optical cable 5.

[0040] After the optical cable 5 enters the secondary detection base 401 through the second optical cable transmission through-hole 402, the arc-shaped abutment surface 410 of each dynamic detection wheel 409 maintains contact with the circumferential surface of the optical cable 5 under the action of the spring 407. The displacement sensor 403 connected to each dynamic detection wheel 409 transmits the fluctuation data to the controller and displays the fluctuation curve on the display screen 6. The cooperation of multiple dynamic detection wheels 409 covers the entire circumferential surface of the optical cable 5. When there is a lump on the surface of the optical cable 5, the dynamic detection wheel 409 at the corresponding position drives the telescopic rod 406 to move towards the displacement sensor 403 and compress the spring 407. The fluctuation curve on the display screen 6 becomes abnormal, an alarm signal is issued, and the corresponding position is recorded. The subsequent production line stops so that the staff can check the optical cable 5 by checking the position record. Since the dynamic detection wheel 409 can extend and retract according to the outer diameter of different optical cables 5, the surface of the optical cable 5 can be detected by the displacement of the displacement sensor 403 within a certain range of the outer diameter of the optical cable 5, without the need for frequent changes of the detection mold.

[0041] To ensure that multiple dynamic detection wheels 409 can fully cover the circumferential surface of the optical cable 5 and that there is no interference between adjacent dynamic detection wheels 409, in this embodiment, multiple displacement sensors 403 are arranged in a radially symmetrical manner to form multiple pairs of displacement sensor units and are staggered along the optical cable transmission direction on the secondary detection base 401. Alternatively, multiple displacement sensors 409 can be directly staggered along the optical cable transmission direction on the secondary detection base 401, thereby improving the coverage of surface defect detection of the optical cable 5 and avoiding the generation of optical cable detection blind spots.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A surface inspection device for optical cables, characterized in that: The device includes a base, and on the top of the base, along the optical cable transmission direction, a primary detection mechanism and a secondary detection mechanism are sequentially arranged. The primary testing mechanism includes a primary testing base and a primary testing mold. The primary testing base has a mold placement groove recessed on its side facing the secondary testing mechanism, and a first optical cable transmission through hole is formed at the center of the bottom of the mold placement groove along the optical cable transmission direction. The primary testing mold is placed in the mold placement groove, and an optical cable testing through hole coaxially arranged with the first optical cable transmission through hole is formed at its center. The secondary detection mechanism includes a secondary detection base and multiple detection components. The secondary detection base has a second optical cable transmission through-hole coaxially arranged with the first optical cable transmission through-hole along the optical cable transmission direction. The interior of the secondary detection base has an optical cable detection chamber communicating with the second optical cable transmission through-hole. The multiple detection components are evenly distributed on the secondary detection base, with one end fixedly connected to the secondary detection base and the other end extending into the optical cable detection chamber and connected to a detection abutment through an elastic telescopic component. The multiple detection abutments are arranged around the circumference of the optical cable along the vertical projection of their projections onto the secondary detection base along the optical cable transmission direction. The primary detection mold has a multi-lobed structure and is composed of at least two individual detection mold units. Each individual detection mold unit is magnetically connected to the bottom of the mold placement slot, allowing the primary detection mold to be placed within the slot. A detection mold receiving groove is recessed on the side of the primary detection base facing the secondary detection mechanism. The mold placement slot is recessed at the center of the bottom of the receiving groove. A top cover plate covers the top surface of the receiving groove, with a through hole at its center. This through hole is coaxial with and has the same dimensions as the first optical cable transmission through hole. A detection mold sensor is also located on the top of the primary detection base, with one end extending into the receiving groove. Multiple detection components are arranged in a radially symmetrical manner to form multiple pairs of detection component units and are staggered along the optical cable transmission direction on the secondary detection base, or multiple detection components are staggered along the optical cable transmission direction on the secondary detection base.

2. The optical cable surface inspection device according to claim 1, characterized in that: The detection component is a displacement sensor. The secondary detection base has multiple fixed through holes communicating with the optical cable detection chamber. Each fixed through hole is fixedly connected to the displacement sensor by a screw sleeve. The end of the displacement sensor not connected to the fixed through hole extends into the optical cable detection chamber. The elastic telescopic component includes a telescopic rod and a spring. One end of the telescopic rod is fixedly connected to the displacement sensor, and the other end is fixedly connected to the detection abutment. The telescopic rod has a radially extending abutment platform on its body near the detection abutment. The spring is sleeved on the telescopic rod, and its two ends are fixedly connected to or in contact with the displacement sensor and the abutment platform, respectively.

3. The optical cable surface inspection device according to claim 2, characterized in that: The detection abutment is a dynamic detection wheel. The circumferential surface of the dynamic detection wheel is concave inward along its radial direction and has an arc-shaped abutment surface that contacts the surface of the optical cable. The dynamic detection wheel is rotatably mounted on a wheel frame and is fixedly connected to the telescopic rod through the wheel frame. The ends of the multiple dynamic detection wheels that are close to each other are arranged around the circumference of the optical cable along the vertical projection of the optical cable transmission direction on the secondary detection base.

4. The optical cable surface inspection device according to claim 1, characterized in that: An optical cable stabilization device is provided between the primary testing mechanism and the secondary testing mechanism, and at the rear end of the secondary testing mechanism along the optical cable transmission direction. The optical cable stabilization device includes a stabilizing base, a guide wheel, and a pressure wheel. The stabilizing base is vertically disposed on the top of the base. The guide wheel and the pressure wheel are rotatably disposed on the stabilizing base. The guide wheel and the pressure wheel are arranged vertically against each other and there is an optical cable transmission gap between them. The optical cable transmission gap is coaxially disposed at the same height as the first optical cable transmission through hole and the second optical cable transmission through hole.

5. The optical cable surface inspection device according to claim 4, characterized in that: The base is equipped with a controller, and the top of the base is also equipped with a display screen. The controller is connected to the primary detection mechanism, the secondary detection mechanism, the optical cable stabilization device, and the display screen.

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