Multi-glue sectional type glue coating system and method for optical fiber welding point

Abstract

The invention provides an optical fiber fusion point multi-glue sectional type glue coating system and method, and relates to the technical field of glue coating. The multi-glue sectional type glue coating system for the optical fiber welding point comprises a rack, a driving module, a glue coating module, a point light source and a line light source, the gluing module is arranged at the movable end of the driving module and comprises a plurality of independent glue barrels and gluing heads which are communicated with the glue barrels in a one-to-one correspondence manner; the glue barrels are respectively used for storing functional glue with different refractive indexes, and the plurality of gluing heads are used for alternately and sectionally gluing the upper semicircular wall of the cladding. According to the system, a laser is fixed through a rack, and a driving module is used for driving a gluing module, a point light source and a line light source to move in a three-dimensional space, so that multi-glue segmented coating on the upper semicircular wall of a cladding and stepped irradiation curing of the point light source and the line light source on a gluing part are realized; therefore, the automation degree and the process stability of optical fiber fusion point glue coating are comprehensively improved.

Description

Technical Field

[0001] This invention belongs to the field of adhesive coating technology, and in particular relates to a multi-adhesive segmented coating system and method for optical fiber splice points. Background Technology

[0002] In fields such as fiber optic communication and high-power laser processing, the reliability of fiber optic splices directly affects the transmission efficiency of optical signals and the stability of equipment operation. To achieve long-term protection and functional enhancement of splices, a protective layer with mechanical protection and optical adjustment functions is required through an adhesive coating process. Especially in applications of high-power lasers (such as kilowatt-level pump combiners and signal output terminals of laser cutting heads), bare fiber splices must not only withstand environmental interference such as vibration and temperature changes, but also require the use of adhesives with specific refractive indices to remove cladding light, in order to avoid problems such as local overheating and signal attenuation caused by cladding light leakage. Therefore, a segmented alternating adhesive coating structure using low-refractive-index adhesive (for structural reinforcement) and high-refractive-index adhesive (for cladding light removal) is typically required.

[0003] However, the current welding point coating process in the industry is still mainly done manually. Due to the fluctuations in manual operation techniques, it is easy to cause misalignment of low / high refractive index adhesive segments, which in turn leads to excessive local light reflection loss. Summary of the Invention In view of this, the present invention provides a multi-adhesive segmented coating system and method for optical fiber fusion splices, aiming to solve the problems of low efficiency and unstable quality caused by the reliance on manual operation for coating optical fiber fusion splices.

[0004] The technical solution of this invention is implemented as follows: This invention provides a multi-adhesive segmented coating system for optical fiber splices, comprising a frame for mounting a laser, an optical fiber extending along a first direction on the top surface of the laser, the optical fiber having a cladding layer with a pre-set mark on the upper semi-circular wall of the cladding layer, and protruding relative to the top surface of the laser; a drive module having a movable end capable of moving in space; a coating module disposed at the movable end of the drive module, the coating module including multiple independent glue tanks and coating heads corresponding to and connected to each glue tank; the glue tanks are used to store functional adhesives with different refractive indices, and the multiple coating heads are used to alternately apply adhesive to the upper semi-circular wall of the cladding layer in segments; a point light source disposed at the movable end of the drive module, the point light source being used to irradiate and cure a portion of the coated section of the cladding layer; and a line light source disposed at the movable end of the drive module, the line light source being used to irradiate and cure the entire coated section of the cladding layer.

[0005] In one embodiment, the laser body is pre-loaded with a QR code label; the fiber optic splice multi-adhesive segmented coating system also includes a barcode scanner, the scanning range of which can cover the QR code label.

[0006] In one embodiment, a camera is also included, the camera being used to acquire the markings on the packaging layer and to acquire an image of the adhesive coating on the packaging layer.

[0007] In one embodiment, a cleaning module is also included, wherein the cleaning air tube of the cleaning module is disposed at the movable end of the drive module and is used to blow the upper semi-circular wall of the cladding.

[0008] This invention also provides a multi-adhesive segmented coating method for optical fiber splice points. This method is based on the aforementioned multi-adhesive segmented coating system for optical fiber splice points. The method includes: scanning a QR code label on the laser body using a barcode scanner to obtain the laser model and corresponding coating parameters; capturing cladding images using a camera and identifying preset marks to locate the splice point position and the coating area boundary; retrieving a matching coating program based on the laser model and mark positioning data; the drive module driving the coating head to alternately coat the upper semi-circular wall of the cladding with low-refractive-index and high-refractive-index adhesives in segments according to the coating program; after each segment of coating is completed, the drive module switches to the point light source station to pre-cur the adhesive layer of that segment; after all adhesive segments are coated, the drive module drives the line light source to deeply cure the entire coated area.

[0009] In one embodiment, during the segmented alternating adhesive application process, the adhesive dispensing speed of the applicator head is automatically adjusted according to the adhesive viscosity.

[0010] In one embodiment, after overall irradiation and curing, an industrial camera captures images of the adhesive coating, and compares the adhesive layer thickness, boundary clarity, and coverage integrity with preset parameters to determine whether it is qualified or not.

[0011] In one embodiment, during segmented adhesive application, after the point light source is pre-cured, the drive module moves the next adhesive application head to the end point of the previous adhesive segment to start adhesive application, so as to make the adhesive segments continuous.

[0012] In one embodiment, prior to the adhesive application operation, an inert gas is introduced into the cleaning air tube to purge the cladding along the axial direction of the fiber core. In one implementation, if the glue application process fails to retrieve, the system triggers an audible and visual alarm and displays a fault code on the screen, pausing the process until the parameters are manually confirmed before restarting.

[0013] This invention provides a multi-adhesive segmented coating system for fiber optic splice points. The system uses a frame to fix a laser and a drive module to move a coating module, point light sources, and line light sources in three-dimensional space, achieving segmented coating and curing of multiple adhesives on the upper semi-circular wall of the cladding. The coating module is equipped with independent glue tanks and coating heads for adhesives of different refractive indices, allowing for alternating coating according to a preset program. The point light sources undergo local pre-curing after each segment of coating to prevent cross-contamination and deformation. The line light sources perform overall deep curing after all coating is completed, ensuring a strong bond between the adhesive layers. This comprehensively improves the automation and process stability of fiber optic splice coating. Attached Figure Description

[0014] 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 the structures shown in these drawings without creative effort.

[0015] Figure 1 A first-view schematic diagram of the multi-adhesive segmented coating system for optical fiber splices provided by the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A first-view schematic diagram of the multi-adhesive segmented coating system for optical fiber splices provided by the present invention; Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0016] Explanation of reference numerals in the attached figures: 100. System; 1. Rack; 2. Laser; 3. Fiber optic cable; 4. Drive module; 41. Movable end; 42. Motor; 5. Glue application module; 51. Glue bucket; 52. Glue application head; 6. Point light source; 7. Line light source; 8. Barcode scanner; 9. Cleaning module; 91. Cleaning air tube; 10. Camera. Detailed Implementation

[0017] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0019] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0020] In fields such as fiber optic communication and high-power laser processing, the reliability of fiber optic splices directly affects the transmission efficiency of optical signals and the stability of equipment operation. To achieve long-term protection and functional enhancement of splices, a protective layer with mechanical protection and optical adjustment functions is required through an adhesive coating process. Especially in applications of high-power lasers (such as kilowatt-level pump combiners and signal output terminals of laser cutting heads), bare fiber splices must not only withstand environmental interference such as vibration and temperature changes, but also require the use of adhesives with specific refractive indices to remove cladding light, in order to avoid problems such as local overheating and signal attenuation caused by cladding light leakage. Therefore, a segmented alternating adhesive coating structure using low-refractive-index adhesive (for structural reinforcement) and high-refractive-index adhesive (for cladding light removal) is typically required.

[0021] However, the current welding point coating process in the industry is still mainly done manually. Due to the fluctuations in manual operation techniques, it is easy to cause misalignment of low / high refractive index adhesive segments, which in turn leads to excessive local light reflection loss.

[0022] In view of this, the present invention provides a multi-adhesive segmented coating system and method for optical fiber fusion splices, aiming to solve the problems of low efficiency and unstable quality caused by the reliance on manual operation for coating optical fiber fusion splices.

[0023] Please see Figure 1 and Figure 3The fiber optic splice multi-adhesive segmented coating system 100 includes a frame 1, a drive module 4, an adhesive coating module 5, a point light source 6, and a line light source 7. The frame 1 is used to mount and fix the laser 2. An optical fiber 3 is mounted on the top surface of the laser 2, extending along a first direction and having a cladding layer for removing the coating, i.e., an exposed cladding layer. The upper semi-circular wall of the cladding layer has pre-set markings, which can be laser-etched annular scale lines or colored coatings, used to assist in the precise positioning of the adhesive coating area. Simultaneously, the optical fiber protrudes relative to the top surface of the laser 2 so that the adhesive can adhere to the protruding upper semi-circular wall.

[0024] As the motion execution core of system 100, drive module 4 has a movable end 41 that can move in three-dimensional space, driving the load to complete the movement of the trajectory in space, providing power support for the automated execution of processes such as gluing and curing. The power source of drive module 4 can be a motor 42, which drives the movable end 41 to move through a lead screw and guide rail.

[0025] Please see Figure 2 The adhesive application module 5 is integrated into the movable end 41 of the drive module 4. It includes multiple independent adhesive buckets 51 and corresponding adhesive application heads 52. Different adhesive buckets 51 store low-refractive-index adhesive and high-refractive-index adhesive with specific optical properties, respectively. The adhesive application heads 52 can work alternately according to a preset program to achieve segmented alternating coating of the upper semi-circular wall of the cladding. The point light source 6 and the line light source 7 are also installed on the movable end 41 of the drive module 4. The point light source 6 is used to quickly pre-cure the local adhesive layer after each segment of adhesive is applied to prevent cross-contamination or deformation of the adhesive layer during subsequent coating processes. The line light source 7 performs one-time deep curing of the entire coated area after all adhesive segments are coated to ensure that the adhesive layer forms a firm bond with the cladding surface and the laser 2 surface, thereby improving the mechanical strength and optical stability of the coated structure. Specifically, after the adhesive applicator 52 completes the application of adhesive to a section, the drive module 4 quickly moves the point light source 6 to that section. The specific wavelength light emitted by the point light source 6 can quickly pre-cure this section of adhesive, allowing the adhesive layer to initially take shape and preventing problems such as dripping or mixing during subsequent application or movement, ensuring clear boundaries between each adhesive section. After all adhesive sections have been applied and pre-cured, the drive module 4 then moves the line light source 7 to the adhesive-coated area. The line light source 7 can provide large-area, uniform illumination, deeply curing the entire adhesive-coated area to form a protective layer with high mechanical strength and good optical performance, thereby effectively improving the reliability and stability of the fiber optic splice.

[0026] The system 100 uses a frame 1 to fix the laser 2, and a drive module 4 to move the adhesive application module 5, point light source 6, and line light source 7 in three-dimensional space to achieve multi-segment adhesive coating and curing on the upper semi-circular wall of the cladding. The adhesive application module 5 is equipped with independent glue buckets 51 and application heads 52 for adhesives with different refractive indices, and can apply adhesive alternately according to a preset program; the point light source 6 performs local pre-curing after each segment of adhesive application to avoid cross-contamination and deformation; the line light source 7 performs overall deep curing after all adhesive application is completed to ensure a firm bond of the adhesive layer; thus, the automation level and process stability of the adhesive coating at the fiber optic splice point are comprehensively improved.

[0027] In some embodiments, please refer to Figure 1 and Figure 3 The fiber optic 3 fusion splice multi-adhesive segmented coating system 100 also includes a barcode scanner 8. Furthermore, the laser 2 has a pre-installed QR code label on its body; the scanning range of the barcode scanner 8 can cover the QR code label.

[0028] The barcode scanner 8 quickly obtains core information such as the laser model, cladding diameter, weld point location parameters, and compatible adhesive coating process number by scanning the QR code label on the laser 2 body. This information is then transmitted in real time to the central control unit of the system 100. Upon receiving the information, the central control unit automatically retrieves the matching adhesive coating parameters from the preset process program library. These parameters include the alternating application sequence of low / high refractive index adhesives, the single-segment coating length (e.g., adjustable from 0.3 to 0.5 cm), the moving speed of the coating head 52 (e.g., 0.2 to 0.4 cm / s), and the curing power and time of the point light source 6 / line light source 7. This eliminates the need for manual parameter input, shortening the process preparation time for a single laser 2 and completely avoiding adhesive coating failures caused by manual parameter input errors.

[0029] In some embodiments, please refer to Figure 3 and Figure 4 The fiber optic 3-fusion splice multi-adhesive segmented coating system 100 also includes a camera 10. The camera 10 is used to acquire markings on the coating layer and to acquire images of the adhesive coating on the cladding layer.

[0030] Camera 10, through its high-definition image acquisition function, forms a closed-loop collaboration with barcode scanner 8, central control unit, and drive module 4 throughout the entire adhesive coating process. Its specific functions are reflected in the following two aspects: Firstly, pre-application positioning calibration. After the barcode scanner 8 completes the parameter acquisition of the laser 2, the camera 10 can focus on the cladding area, accurately identify the preset marks on the coating layer (such as laser-etched circular scale lines, colored coatings), calculate the pixel coordinates of the marks through image analysis algorithms, convert them into actual spatial coordinates, and transmit the coordinate data to the central control unit. The central control unit compares it with the welding point position parameters obtained by the barcode scanner 8. If there is a deviation (such as parameter errors caused by slight installation offset of the laser 2), it automatically corrects the adhesive application starting point and path planning to ensure that the alignment accuracy between the adhesive application area and the welding point is controlled within ±0.01cm, avoiding adhesive coverage offset problems caused by initial positioning deviation. Secondly, after the overall adhesive coating is completed and deeply cured by the line light source 7, the camera 10 can also work with industrial-grade image analysis software to perform a panoramic scan of the coated area, generate an overall quality report of the adhesive layer, record the actual size and boundary clarity of each adhesive segment, and compare it with preset parameters (such as a single adhesive segment length of 0.4cm and clear boundaries without penetration), providing visual data support for the coating quality of the subsequent data storage and traceability module, and improving the system 100's ability to control the coating quality.

[0031] In some embodiments, please refer to Figure 2 The fiber optic splice multi-adhesive segmented coating system 100 also includes a cleaning module 9. The cleaning air tube 91 of the cleaning module 9 is located at the movable end 41 of the drive module 4 and is used to blow clean the upper semi-circular wall of the cladding.

[0032] The cleaning air tube 91 of the cleaning module 9 is rigidly connected to the movable end 41 of the drive module 4, and can synchronously achieve three-dimensional spatial displacement with the movable end 41. The cleaning module 9 works closely with the camera 10, the central control unit, and the drive module 4 throughout the entire coating process. Specifically, after the barcode scanner 8 completes parameter acquisition and the camera 10 completes initial positioning, the central control unit instructs the cleaning module 9 to start: the inert gas supply device (such as a nitrogen cylinder) connected to the cleaning air tube 91 is turned on, and at the same time, the drive module 4 drives the cleaning air tube 91 to move at a constant speed along the cladding axis, covering the entire area of ​​the exposed cladding section (e.g., from the output end of the laser 2 to 1 cm outside the weld point).

[0033] This invention also provides a method for multi-adhesive segmented coating of three optical fiber splices.

[0034] Please see Figures 1 to 4 This method is based on the aforementioned fiber optic 3 splice multi-adhesive segmented coating system 100, and includes the following steps: The laser 2 model and its associated cladding parameters are obtained by scanning the QR code label on the laser 2 body using barcode scanner 8. These parameters include the cladding diameter, refractive index distribution, weld point coordinates, and the preset adhesive coating process number.

[0035] Camera 10 acquires images of the cladding layer and identifies preset marks to locate the weld point and the boundary of the adhesive application area. Camera 10 first captures real-time images of the cladding layer using a high-definition lens. After image preprocessing (such as grayscale conversion and noise reduction), an edge detection algorithm identifies the contour boundary of the cladding layer. Then, template matching technology locates the preset marks (such as circular scale lines or colored coatings) on the upper semi-circular wall of the cladding layer. Based on the position coordinates of the marks and the weld point position parameters obtained by barcode scanner 8, system 100 calculates the start and end points of the adhesive application area and the division intervals of each adhesive segment, ensuring that the relative position of the adhesive application path and the weld point meets the process requirements, laying the foundation for the precise operation of the adhesive application module 5.

[0036] Based on the laser 2 model and the marker positioning data, a matching adhesive application program is retrieved. Specifically, the central control unit correlates the process program number obtained by the barcode scanner 8 with the marker positioning coordinates acquired by the camera 10, selecting a program from multiple adhesive application program templates stored in the system 100 that perfectly matches the current laser 2 model, cladding diameter, and weld point position. This program not only includes alternating application logic for low / high refractive index adhesives (such as a cyclical combination of applying 5 segments of low refractive index adhesive followed by 3 segments of high refractive index adhesive), but also incorporates detailed parameters such as the distance between the adhesive application head 52 and the cladding surface (e.g., maintaining a vertical distance of 0.15-0.2 mm to control adhesive thickness) and the acceleration of the adhesive application head 52 along the cladding axis (to avoid adhesive accumulation during start-up and shutdown), ensuring the adhesive application process aligns with the physical characteristics and process requirements of the cladding.

[0037] The drive module 4, according to the adhesive application program, drives the adhesive application head 52 to alternately apply low-refractive-index and high-refractive-index adhesives to the upper semi-circular wall of the cladding in segments. Under the precise control of the drive module 4, the adhesive application head 52 first moves to the starting point of the adhesive application area, aligning with the preset mark position on the upper semi-circular wall of the cladding. According to the order set in the adhesive application program, if the first segment is low-refractive-index adhesive, the corresponding adhesive container 51, driven by air pressure or a micro-pump, uniformly extrudes the adhesive through the adhesive application head 52. The adhesive application head 52 moves smoothly along the optical fiber axis at a preset moving speed, while maintaining a set vertical distance from the cladding surface to ensure uniform adhesive layer thickness. When the adhesive application head 52 moves to the end mark position of the low-refractive-index adhesive segment, it stops dispensing adhesive and quickly switches to the high-refractive-index adhesive head. The high-refractive-index adhesive head applies the adhesive in the same manner, its application path closely connecting with the low-refractive-index adhesive segment, thus forming an alternating structure of the first segment of low-refractive-index adhesive and the first segment of high-refractive-index adhesive.

[0038] After each section of adhesive is applied, the drive module 4 switches to the point light source 6 station to pre-cure the adhesive layer. The wavelength of the point light source 6 must match the photocuring characteristics of the applied adhesive; for example, 365nm ultraviolet light is used for low-refractive-index adhesives, and 405nm ultraviolet light is used for high-refractive-index adhesives, ensuring the curing efficiency of different types of adhesives. The pre-curing time is dynamically adjusted according to the adhesive layer thickness. The adhesive layer volume is calculated based on the adhesive dispensing data received in real time by the central control unit from the applicator 52, and the corresponding curing time is then matched (e.g., 3-5 seconds of pre-curing for a 0.1mm thick adhesive layer). During curing, the point light source 6 maintains a vertical distance of 0.5-1cm from the coating surface, and the spot diameter is controlled to be 1.2 times the width of the adhesive section, ensuring full coverage of the adhesive section while preventing light spillage from affecting uncoated areas. After pre-curing, the point light source 6 automatically turns off, and the drive module 4 then moves the applicator 52 to the starting position of the next adhesive application section, entering the next adhesive application-pre-curing cycle.

[0039] After all adhesive segments are coated, the drive module 4 drives the line light source 7 to perform deep curing on the entire coated area. The line light source 7 employs a planar array design, covering the entire coated area. Its light intensity, irradiation time, and wavelength parameters are intelligently matched according to the adhesive type and total coating thickness. During deep curing, the system 100 monitors the temperature of the irradiated area in real time, dynamically adjusting the power output of the line light source 7 based on data feedback from a built-in infrared temperature sensor. This keeps the temperature of the coated area within the optimal curing range for the adhesive (e.g., 50-60℃), preventing damage to the coating or degradation of the adhesive performance due to localized overheating. After deep curing is complete, the line light source 7 automatically shuts off, and the drive module 4 resets to its initial standby position, awaiting the next coating operation command.

[0040] Through the collaborative work of auxiliary components such as barcode scanner 8, camera 10, and cleaning module 9, the system 100 has functions such as automatic parameter retrieval, intelligent positioning calibration, surface pretreatment, and quality visualization detection, forming a closed-loop process covering "parameter acquisition-positioning calibration-adhesive coating-curing". This realizes the full automation of the fiber optic splice coating process and solves the industry pain points of low efficiency and large quality fluctuations caused by manual operation.

[0041] In some embodiments, during the segmented alternating adhesive application process, the dispensing speed of the adhesive head 52 is automatically adjusted according to the adhesive viscosity.

[0042] The central control unit monitors the viscosity changes of the adhesive in the adhesive tank 51 in real time using an adhesive viscosity sensor. When an increase in the viscosity of the low-refractive-index adhesive is detected, the system 100 automatically increases the dispensing air pressure of the corresponding adhesive tank 51 or increases the speed of the micro-pump to ensure a stable dispensing volume per unit time and avoid uneven adhesive layer thickness due to viscosity changes. Similarly, if the viscosity of the high-refractive-index adhesive decreases, the system 100 will correspondingly reduce the driving pressure to prevent excessive adhesive overflow and the formation of adhesive nodules. This dynamic adjustment mechanism can reduce adhesive layer thickness deviation and further improve the bonding accuracy between different adhesive segments.

[0043] In some embodiments, please refer to Figure 1 and Figure 2 After overall curing by irradiation, an industrial camera captures images of the adhesive layer, and compares the thickness of the adhesive layer, the clarity of the boundary, and the integrity of the coverage with preset parameters to determine whether it is qualified or not.

[0044] During the comparison process, System 100 automatically generates a quality inspection report, which records in detail the actual measured values ​​and allowable deviation ranges of each test item. If all test items are within the acceptable range, the adhesive coating quality is deemed acceptable. System 100 then associates and stores this report with information such as the laser 2 model and process parameters in its database, providing a basis for subsequent product traceability. If any non-conforming items are found (such as adhesive layer thickness exceeding ±0.03mm tolerance or obvious penetration at the boundary), System 100 will immediately issue an alarm and mark the image coordinates and specific defect type of the non-conforming area in the report, prompting operators to review or rework the process, thereby achieving full-process control over adhesive coating quality.

[0045] In some embodiments, please refer to Figure 3 and Figure 4 When applying adhesive in segments, after the point light source 6 has been pre-cured, the drive module 4 drives the next adhesive head 52 to move to the end of the previous adhesive segment to start applying adhesive, so as to make the adhesive segments continuous.

[0046] The specific implementation method is as follows: After the previous adhesive layer is pre-cured, the central control unit immediately sends a position switching command to the drive module 4. The drive module 4 controls the movable end 41 to move the next adhesive head 52 to the preset connection position at the end of the previous adhesive segment according to the preset adhesive segment connection parameters in the adhesive application program (such as adhesive segment overlap of 0.05-0.1mm). At this time, the lateral deviation between the center of the adhesive outlet of the adhesive head 52 and the end of the previous adhesive segment does not exceed ±0.02mm, and the longitudinal distance is maintained at the coating spacing set with the coating surface. This ensures that when the adhesive head 52 starts dispensing adhesive, the adhesive can be smoothly connected with the end of the previous adhesive segment, avoiding gaps or accumulation, and further ensuring the continuity and integrity of the adhesive coating structure.

[0047] In some embodiments, please refer to Figure 1 and Figure 2Before applying the adhesive, inert gas is introduced into the cleaning air tube 91 to purge the coating along its axial direction.

[0048] During the purging process, inert gas is ejected from the flat nozzle of the cleaning air pipe 91, forming a fan-shaped airflow with a width matching the diameter of the cladding layer. This effectively removes fine dust, oil, and oxide layers from the cladding surface. After cleaning, the camera 10 re-captures images of the cladding layer and uses a surface cleanliness analysis algorithm to determine the cleaning effect. If residual impurities remain, the system 100 will automatically extend the purging time or increase the gas pressure until the cleanliness meets the requirements for adhesive application, creating favorable conditions for the subsequent strong bonding of the adhesive to the cladding surface.

[0049] In some embodiments, please refer to Figure 1 and Figure 3 If the glue application process fails to retrieve, the system will trigger an audible and visual alarm and display a fault code on the screen, pausing the process until the parameters are manually confirmed and then restarting.

[0050] The fault codes include specific reasons for program retrieval failure. For example, "E01" indicates that the laser 2 model is not matched with the corresponding process program library; "E02" indicates that the marker positioning coordinates are outside the normal range, causing program association failure; and "E03" corresponds to incompatibility between the process program number and the version stored in the central control unit. Operators can quickly locate the root cause of the problem based on the fault codes displayed on the screen: if it is "E01," check if the QR code on the laser 2 body is intact or if the scanning angle of the barcode scanner 8 is off; if it is "E02," confirm if the preset markings on the coating are clear or if there are any stains or obstructions on the lens of the camera 10. After manually troubleshooting and re-entering the correct parameters or confirming the correction operation through the system 100 control panel, pressing the reset button will restart the process. The system 100 will then attempt a second attempt from the parameter acquisition stage of the barcode scanner 8, ensuring that program matching issues are eliminated before the adhesive coating operation starts, and preventing the adhesive coating process from completely failing due to incorrect program execution.

[0051] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A multi-adhesive segmented coating system for optical fiber splices, characterized in that, include: A frame for mounting a laser, wherein an optical fiber extending in a first direction is disposed on the top surface of the laser, the optical fiber having a cladding layer with a removed coating layer, the upper semi-circular wall of the cladding layer having a pre-set mark and protruding relative to the top surface of the laser; The drive module has a movable end that is capable of moving within space; The glue application module is located at the active end of the drive module. The glue application module includes multiple independent glue buckets and glue application heads that are connected to each glue bucket in a one-to-one correspondence. The glue buckets are used to store functional glues with different refractive indices, and the multiple glue application heads are used to apply glue to the upper semi-circular wall of the cladding layer in alternating segments. A point light source is disposed at the movable end of the driving module, and the point light source is used to irradiate and cure a portion of the adhesive-coated section of the cladding layer. A linear light source is disposed at the movable end of the driving module, and the linear light source is used to irradiate and cure the entire adhesive-coated section of the cladding layer.

2. The multi-adhesive segmented coating system for optical fiber splices according to claim 1, characterized in that, The laser device has a pre-installed QR code label on its body; The fiber optic splice multi-adhesive segmented coating system also includes a barcode scanner, the scanning range of which can cover the QR code label.

3. The multi-adhesive segmented coating system for optical fiber splices according to claim 1, characterized in that, It also includes a camera for acquiring the markings on the packaging layer and for acquiring an image of the adhesive coating on the packaging layer.

4. The multi-adhesive segmented coating system for optical fiber splices according to claim 1, characterized in that, It also includes a cleaning module, wherein the cleaning air tube of the cleaning module is located at the movable end of the drive module and is used to blow the upper semi-circular wall of the cladding.

5. A multi-adhesive segmented coating method for optical fiber splice points, characterized in that, Based on the fiber optic splice multi-adhesive segmented coating system according to any one of claims 1 to 4, the method includes: Scan the QR code label on the laser device body with a barcode scanner to obtain the laser model and matching cladding parameters; The camera captures images of the cladding layer and identifies preset marks to locate the weld point and the boundary of the adhesive coating area. Based on the laser model and marking positioning data, retrieve the matching adhesive application program; The drive module drives the glue applicator head to apply low-refractive-index and high-refractive-index glue alternately in segments to the upper semi-circular wall of the cladding according to the glue application program. After each section of adhesive is applied, the drive module switches to the point light source station to pre-cure the adhesive layer for that section. After all adhesive segments are coated, the drive module drives the line light source to deeply cure the entire coated area.

6. The multi-adhesive segmented coating method for optical fiber splice points according to claim 5, characterized in that, During the segmented alternating glue application process, the glue dispensing speed of the glue applicator is automatically adjusted according to the glue viscosity.

7. The multi-adhesive segmented coating method for optical fiber splice points according to claim 5, characterized in that, After overall curing by irradiation, an industrial camera captures images of the adhesive layer, and compares the thickness of the adhesive layer, the clarity of the boundaries, and the integrity of the coverage with preset parameters to determine whether it is qualified or not.

8. The multi-adhesive segmented coating method for optical fiber splice points according to claim 7, characterized in that, When applying adhesive in segments, after the point light source has been pre-cured, the drive module moves the next adhesive head to the end of the previous adhesive segment to start applying adhesive, so as to make the adhesive segments continuous.

9. The multi-adhesive segmented coating method for optical fiber splice points according to claim 5, characterized in that, Before the adhesive application, inert gas is introduced into the cleaning air tube to purge the cladding along the axial direction of the fiber core.

10. The multi-adhesive segmented coating method for optical fiber splice points according to claim 5, characterized in that, If the glue application procedure fails to be retrieved, the system will trigger an audible and visual alarm and display a fault code on the screen, pausing the process until the parameters are manually confirmed and then restarting.

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