A kind of optical fiber vacuum clamping tool for V-groove type optical fiber array unit assembly

Abstract

The utility model provides a kind of optical fiber vacuum clamping tool for V groove type optical fiber array unit assembly, it is related to optical communication device manufacturing technical field, including installation base and optical fiber body, further include floating support subassembly, optical fiber guide subassembly, adsorption into slot subassembly and front end positioning subassembly;Floating support subassembly is used to carry out elastic floating support to upper assembly area, optical fiber vacuum clamping tool is used to carry out clamping guide to optical fiber body, V groove substrate and independent cover plate are used to cooperate and realize optical fiber body into slot and hold down.V groove substrate is provided with adsorption V groove, vacuum chamber, adsorption hole and vacuum suction nozzle, adsorption hole is spaced distribution along adsorption V groove length direction, so that optical fiber body is attached to groove face and retains axial self-adapting sliding space, to improve optical fiber into slot precision and assembly stability.

Description

Technical Field

[0001] This utility model relates to the field of optical communication device manufacturing technology, and in particular to a fiber vacuum clamping fixture for assembling V-groove fiber array units. Background Technology

[0002] Fiber optic array units are key components in optical communication modules, silicon photonic device coupling structures, and multi-channel fiber optic connection assemblies. During the assembly of V-groove fiber optic array units, it is crucial to accurately guide the fiber body into the corresponding V-groove and ensure a stable fit between the fiber body end and the V-groove positioning edge. Since the fiber end-face position directly affects the coupling accuracy with subsequent optical chips, waveguides, or connector end-faces, whether the fiber body is fully inserted into the groove is a significant factor influencing the assembly quality of the fiber optic array unit.

[0003] In the assembly of existing V-groove fiber optic array units, the fiber body is typically placed on the V-groove substrate first, and then pressed down with a cover plate. While this method prevents the fiber body from floating upwards, during actual assembly, the microscopic roughness of the V-groove surface easily leads to static friction between the outer periphery of the fiber body and the V-groove wall. When the cover plate directly presses down on the straight fiber body, the pressure generated by the cover plate increases the friction between the fiber body and the V-groove wall, causing the fiber body to be locked before it is fully aligned with the V-groove positioning edge. This results in a small gap in the fiber body at the end face area, affecting the final positioning accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum clamping fixture for assembling V-groove fiber array units, which can solve the problems of static friction locking, lack of adaptive sliding space in the axial direction, insufficient insertion into the groove, and lack of elastic floating compensation in the support structure during the assembly of existing V-groove fiber array units.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a fiber vacuum clamping fixture for assembling V-groove fiber array units, comprising a mounting base and a fiber body, and further comprising: A floating support assembly is disposed above the mounting base and includes a top connecting plate fixedly connected to the top of the mounting base, a floating connecting seat disposed below the top connecting plate, support springs spaced apart above the floating connecting seat, and a lifting support plate connected below the floating connecting seat, for providing elastic floating support for the upper assembly area. The fiber guiding assembly, located on one side of the top connecting plate, includes a fiber vacuum clamping fixture for clamping and guiding the fiber body. The adsorption and insertion assembly is set on the insertion path of the optical fiber body, including a V-groove substrate for supporting the optical fiber body and an independent cover plate for pressing the optical fiber body. The V-groove substrate is used to perform intermittent vacuum adsorption on the optical fiber body. The front positioning component, located at the front of the mounting base, is used to limit the floating range of the floating support component; The lower end of the support spring rests on the floating connector, while the upper end of the support spring presses against the top connecting plate, allowing the floating connector to float elastically relative to the top connecting plate. The lifting support plate is connected below the floating connector and can float up and down synchronously with the floating connector. The intermittent vacuum adsorption allows the optical fiber body to adhere to the groove surface of the V-groove substrate and retains adaptive sliding space in the axial direction of the optical fiber body.

[0006] In a preferred embodiment, a support spring is disposed between the top connecting plate and the floating connecting seat. The support spring is arranged at intervals above the floating connecting seat, with the lower end of the support spring abutting against the floating connecting seat and the upper end of the support spring abutting against the top connecting plate. This allows the floating connecting seat to elastically float towards the top connecting plate when under pressure, and to reset via the support spring when the pressure decreases.

[0007] As a preferred embodiment, the lifting support plate is connected below the floating connection seat. The lifting support plate can float up and down synchronously with the floating connection seat to support the assembly area corresponding to the V-groove substrate and the independent cover plate, so that the optical fiber body can obtain height compensation during the pressing, adsorption and slotting process.

[0008] In a preferred embodiment, the top connecting plate is fixedly connected to the top of the mounting base. The top connecting plate is used to provide a fixed mounting reference for the fiber optic vacuum clamping fixture, and at the same time, it serves as the abutment base for the upper end of the support spring, so that the guiding direction of the fiber optic vacuum clamping fixture does not float synchronously with the floating connecting seat and the lifting support plate.

[0009] In a preferred embodiment, two support springs are provided, which are arranged at intervals along the length or width of the floating connecting seat to provide balanced elastic support for the floating connecting seat and the lifting support plate, thereby reducing the risk of tilting of the lifting support plate caused by unilateral force.

[0010] In one preferred embodiment, a quick-connect pneumatic connector is connected to one side of the optical fiber vacuum clamping fixture, and a plug is provided at the end of the pneumatic passage of the optical fiber vacuum clamping fixture. The quick-connect pneumatic connector is used to connect to an external negative pressure pneumatic passage, and the plug is used to seal the end of the pneumatic passage of the optical fiber vacuum clamping fixture.

[0011] In one preferred embodiment, an adsorption V-groove for accommodating the optical fiber body is formed on the V-groove substrate, and an independent cover plate is disposed above the adsorption V-groove to restrict the optical fiber body from detaching upward from the adsorption V-groove.

[0012] In a preferred embodiment, a vacuum chamber is provided inside the V-groove substrate, and an adsorption hole communicating with the vacuum chamber is opened in the adsorption V-groove. A vacuum nozzle communicating with the vacuum chamber is provided on one side of the V-groove substrate.

[0013] In a preferred embodiment, multiple adsorption pores are provided, and the multiple adsorption pores are distributed at intervals along the length direction of the adsorption V groove, forming a discontinuous adsorption section between adjacent adsorption pores.

[0014] In a preferred embodiment, the V-groove substrate is provided with a first adsorption region and a second adsorption region along the groove entry direction of the optical fiber body, and the spacing between adjacent adsorption holes in the first adsorption region is smaller than the spacing between adjacent adsorption holes in the second adsorption region.

[0015] In a preferred embodiment, the front-end positioning component includes a front-end positioning seat, which is fixedly connected to the front end of the mounting base. The front-end positioning seat is provided with a floating limiting groove, which extends along the floating direction of the lifting support plate and is correspondingly provided with the front end of the lifting support plate to limit the vertical floating range of the lifting support plate.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention utilizes a V-groove substrate, an adsorption V-groove, a vacuum chamber, adsorption holes, and a vacuum nozzle to form an intermittent vacuum adsorption structure. This allows the optical fiber to adhere to the surface of the adsorption V-groove while maintaining axial adaptive sliding space, preventing fiber locking caused by continuous adsorption and improving the adequacy of fiber insertion. An independent cover plate restricts the upward movement of the optical fiber, ensuring its stability during pre-bending release and adsorption. An elastic floating support structure is formed by a top connecting plate, a floating connecting seat, a support spring, and a lifting support plate. The upper end of the support spring presses against the top connecting plate, while the lower end supports the floating connecting seat, allowing the lifting support plate to float slightly up and down with the floating connecting seat, absorbing assembly impacts and height errors. Simultaneously, spherical steel balls are placed between the floating connecting seat and the lifting support plate, achieving adaptive balance through point contact, reducing the risk of tilting and uneven fiber pressure caused by localized off-center loading, thereby improving assembly accuracy, stability, and consistency. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall assembly structure of a fiber vacuum clamping fixture for assembling V-groove fiber array units provided by this utility model. Figure 2 A schematic diagram of the mounting base and lifting support plate in a fiber vacuum clamping fixture for assembling V-groove fiber array units provided by this utility model. Figure 3An exploded view of the optical fiber vacuum clamping fixture for assembling V-groove type optical fiber array units provided by this utility model. Figure 4 A schematic diagram of the structure of the independent cover plate and the optical fiber body in a vacuum clamping fixture for assembling V-groove type optical fiber array units provided by this utility model. Figure 5 A schematic diagram of the structure of the V-groove substrate and the adsorption V-groove in a fiber vacuum clamping fixture for assembling V-groove fiber array units provided by this utility model. Figure 6 This invention provides a schematic diagram of the structure of the V-groove substrate and adsorption holes in a fiber vacuum clamping fixture for assembling V-groove fiber array units. Figure 7 This utility model provides a structural schematic diagram of a lifting support plate and a floating connector in a fiber vacuum clamping fixture for assembling V-groove fiber array units.

[0018] Legend: 1. Mounting base; 2. Floating connector; 3. Support spring; 4. Top connecting plate; 5. Fiber optic vacuum clamping fixture; 6. Independent cover plate; 601. V-groove substrate; 602. Adsorption V-groove; 603. Vacuum chamber; 604. Adsorption hole; 605. Vacuum nozzle; 7. Front positioning seat; 701. Floating limiting groove; 8. Plug; 9. Fiber optic body; 10. Pneumatic quick connector; 11. Lifting support plate. Detailed Implementation

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

[0020] Example 1: Please refer to Figures 1 to 7 This embodiment provides a fiber vacuum clamping fixture for assembling V-groove fiber array units, the specific idea of ​​which is as follows: A fiber vacuum clamping fixture for assembling V-groove fiber array units includes a mounting base 1 and a fiber body 9. The fiber vacuum clamping fixture for assembling V-groove fiber array units also includes: a floating connector 2, a support spring 3, a top connecting plate 4, a fiber vacuum clamping fixture 5, an independent cover plate 6, a V-groove substrate 601, a front positioning seat 7, a plug 8, a pneumatic quick connector 10, and a lifting support plate 11.

[0021] The mounting base 1 is a long, strip-shaped foundation support component, used to support the components above and connect to the external assembly platform. A top connecting plate 4 is fixedly connected to the top of the mounting base 1. The top connecting plate 4 serves as a fixed mounting reference component and does not move up and down with the floating connecting seat 2 and the lifting support plate 11 during assembly and operation. The top connecting plate 4 provides stable support for the optical fiber vacuum clamping fixture 5, keeping the fiber body 9's insertion direction relatively fixed and preventing unnecessary synchronous displacement of the optical fiber vacuum clamping fixture 5 with the floating structure.

[0022] Meanwhile, the floating connecting seat 2 is located below the top connecting plate 4, and the support springs 3 are spaced apart above the floating connecting seat 2. The lower end of the support spring 3 is supported on the floating connecting seat 2, and the upper end of the support spring 3 abuts against the top connecting plate 4. The lifting support plate 11 is connected below the floating connecting seat 2 and can float up and down synchronously with the floating connecting seat 2. Thus, the top connecting plate 4 serves as a fixed force-bearing reference, the floating connecting seat 2 serves as an elastic floating force transmission component, and the lifting support plate 11 serves as a lower support component, together forming an elastic support structure that is fixed at the upper end and floating at the lower end.

[0023] To further reduce the risk of tilting of the lifting support plate 11 under localized pressure, a spherical steel ball is installed between the floating connecting seat 2 and the lifting support plate 11. The spherical steel ball is located between the relative pressure-bearing areas of the floating connecting seat 2 and the lifting support plate 11, forming a point-contact pressure-bearing fit between them. This spherical steel ball does not change the basic assembly relationship between the top connecting plate 4, the floating connecting seat 2, the support spring 3, and the lifting support plate 11. Its main function is to provide a slight angle adaptive leveling capability through the spherical point-contact structure when the lifting support plate 11 is subjected to unilateral bearing force or localized assembly pressure, thereby reducing the risk of significant swaying or tilting of the lifting support plate 11 due to uneven rigidity.

[0024] When the upper independent cover plate 6, V-groove substrate 601, or optical fiber body 9 is subjected to assembly pressure, the lifting support plate 11 first transmits the pressure to the floating connector 2 through spherical steel balls. The floating connector 2 compresses the support spring 3 relative to the top connecting plate 4, causing the support spring 3 to deform under compression. The elastic deformation of the support spring 3 causes the floating connector 2 and the lifting support plate 11 to move slightly downward or return to their original floating position, thereby absorbing local assembly impacts and height errors. At the same time, the spherical steel balls form a point-contact adaptive balance support between the floating connector 2 and the lifting support plate 11. When one side of the lifting support plate 11 is subjected to greater pressure, the spherical steel balls allow the lifting support plate 11 to make adaptive adjustments at a very small angle, so that local off-center loads are not directly converted into overall tilting, thereby improving the stability of the lifting support plate 11 during the pressing, fiber placement, and adsorption processes.

[0025] Furthermore, the floating connector 2 can bear the elastic support force of the support spring 3 and transmit this support force to the lifting support plate 11 through the spherical steel balls, so that the lifting support plate 11 maintains a relatively stable lifting state when under force. The top connecting plate 4 and the lifting support plate 11 are functionally distinct. The top connecting plate 4 is used for fixing and positioning, and at the same time provides a base for the upper end of the support spring 3; the floating connector 2 is used to bear the elastic support of the support spring 3 and transmit the floating force downward; the lifting support plate 11 is connected below the floating connector 2 and is used for floating support and buffering assembly pressure; the spherical steel balls are located between the floating connector 2 and the lifting support plate 11 and are used to provide point contact adaptive balance when the lifting support plate 11 is subjected to off-center load. This structure can avoid confusing the optical fiber guiding reference with the elastic floating support reference, keep the guide path of the optical fiber body 9 stable, and at the same time give the assembly support area the necessary flexible compensation capability and adaptive leveling capability.

[0026] It is important to note that a front-end positioning seat 7 is provided at the front end of the mounting base 1. The front-end positioning seat 7 serves as a front-end support and limiting base, improving the structural stability of the front-end assembly area. A floating limiting groove 701 is formed on the front-end positioning seat 7, corresponding to the front-end area of ​​the lifting support plate 11. When the lifting support plate 11 floats under pressure, the floating limiting groove 701 provides vertical floating space for the front end of the lifting support plate 11 and forms a limit when the lifting support plate 11 floats beyond a preset range, preventing the lifting support plate 11 from moving down too much or swaying significantly. Through the limiting effect of the front-end positioning seat 7 and the floating limiting groove 701, the lifting support plate 11 can still be limited within a reasonable floating range while the spherical steel ball provides adaptive balance, avoiding excessive swaying that could affect the stability of the fiber body 9 entering the groove.

[0027] To further explain, the fiber optic vacuum clamping fixture 5 is mounted on one side of the top connecting plate 4 and is fixedly engaged with it. The fixture is used to clamp, pull, and guide the fiber optic body 9. A quick-connect pneumatic connector 10 is connected to one side of the fixture, allowing for rapid connection to an external negative pressure pneumatic path. A plug 8 is installed at the end of the pneumatic path of the fixture 5, sealing the processing port of the internal pneumatic path. Through the cooperation of the plug 8 and the quick-connect pneumatic connector 10, a stable pneumatic environment is formed inside the fixture 5, providing temporary clamping and positioning guidance for the fiber optic body 9 before it enters the assembly area.

[0028] The V-groove substrate 601 is positioned above the lifting support plate 11, and the independent cover plate 6 is positioned above the optical fiber body 9. The independent cover plate 6 can be an easily processed metal plate, and its lower surface can press against the optical fiber body 9. An adsorption V-groove 602 is formed on the V-groove substrate 601, allowing the optical fiber body 9 to enter the corresponding adsorption V-groove 602. After the independent cover plate 6 cooperates with the V-groove substrate 601, it can prevent the optical fiber body 9 from detaching upwards from the adsorption V-groove 602 and maintain the optical fiber body 9 in a state close to the groove entry position. When the independent cover plate 6 presses down on the optical fiber body 9 and the V-groove substrate 601, the lifting support plate 11 can achieve a slight floating through the support spring 3 and an adaptive balance through the spherical steel balls, thereby reducing the adverse effects of concentrated pressing force on the optical fiber body 9.

[0029] Meanwhile, a vacuum chamber 603 is provided inside the V-groove substrate 601, and an adsorption hole 604 is formed in the adsorption V-groove 602, which communicates with the vacuum chamber 603. A vacuum nozzle 605 is provided on the side of the V-groove substrate 601, which communicates with the vacuum chamber 603. An external vacuum source can enter the vacuum chamber 603 through the vacuum nozzle 605 and act on the adsorption V-groove 602 where the optical fiber body 9 is located through the adsorption hole 604. The adsorption hole 604 is located at or near the bottom of the adsorption V-groove 602, so that the negative pressure can be directly applied to the bottom of the optical fiber body 9, causing the optical fiber body 9 to adhere to the groove surface of the adsorption V-groove 602.

[0030] Furthermore, the adsorption holes 604 are spaced apart along the length of the adsorption V-groove 602, rather than forming a continuous long groove. Discontinuous adsorption sections are formed between adjacent adsorption holes 604. This structure prevents the optical fiber body 9 from being continuously locked by negative pressure along its entire length. When the optical fiber body 9 is adsorbed and adheres to the groove surface of the adsorption V-groove 602, it can still undergo partial adaptive sliding in the axial direction. This slight axial sliding can coordinate with the pre-bending release process of the optical fiber body 9, allowing it to break the static friction lock between itself and the groove wall of the adsorption V-groove 602 during release and rebound, thereby further sliding towards the positioning edge of the adsorption V-groove 602.

[0031] As further explained, the aperture of the adsorption hole 604 can be selected based on the outer diameter of the optical fiber body 9, the processing precision of the V-groove substrate 601, and the negative pressure of the external vacuum source. In one embodiment, the aperture of the adsorption hole 604 can be set to 0.3-0.8 mm, and the spacing between adjacent adsorption holes 604 arranged along the length direction of the adsorption V-groove 602 can be set to 2-5 mm. This aperture range can ensure the negative pressure adsorption effect while avoiding excessive local adsorption of the optical fiber body 9 by a single adsorption hole 604; this spacing range allows the optical fiber body 9 to obtain segmented adsorption support and retains discontinuous adsorption segments between adjacent adsorption holes 604, thereby reducing the degree to which the optical fiber body 9 is continuously locked in the axial direction.

[0032] Meanwhile, the V-groove substrate 601 can form adsorption regions of different densities along the groove insertion direction of the optical fiber body 9. A section near the FAU end face can be designated as the first adsorption region, with relatively dense adsorption holes 604 to improve the groove-fitting stability of the optical fiber body 9 near the end face assembly position. A section away from the FAU end face can be designated as the second adsorption region, with relatively sparse adsorption holes 604 to reduce the degree of tail-end adsorption locking, making it easier for the optical fiber body 9 to generate axial adaptive slip during pre-bending release. By using a relatively dense hole arrangement at the front and a relatively sparse arrangement at the tail, both end-face groove-fitting stability and overall axial compensation capability can be achieved.

[0033] It should be noted that the above-mentioned aperture, aperture spacing, and arrangement of different adsorption regions are only preferred embodiments adapted to common fiber array unit assembly conditions, and do not constitute the only limitation on the specific size and number of adsorption holes 604. In actual processing, the aperture, spacing, number, and distribution density of adsorption holes 604 can be adjusted according to the number of fiber bodies 9, fiber outer diameter, length of adsorption V-groove 602, vacuum source negative pressure value, and assembly accuracy requirements, as long as the fiber body 9 can be attached to the groove surface of adsorption V-groove 602 and axial adaptive sliding space is retained.

[0034] To further explain, the V-groove substrate 601 can be made of easily machinable metal materials such as aluminum alloy, stainless steel, or copper alloy, facilitating the machining of the adsorption V-groove 602, vacuum chamber 603, and adsorption hole 604 through milling, drilling, or precision grinding. The independent cover plate 6 can also be made of easily machinable metal sheet, ensuring good flatness and structural rigidity when holding the optical fiber body 9. Through this structure, the V-groove substrate 601 and the independent cover plate 6 can form a stable optical fiber insertion positioning unit. Example 2: Please refer to Figures 1 to 7 This embodiment provides a fiber vacuum clamping fixture for assembling V-groove fiber array units, the specific idea of ​​which is as follows: A fiber vacuum clamping fixture for assembling V-groove fiber array units includes a mounting base 1 and a fiber body 9. The fiber vacuum clamping fixture for assembling V-groove fiber array units also includes: a V-groove substrate 601, an adsorption V-groove 602, a vacuum chamber 603, an adsorption hole 604, and a vacuum nozzle 605.

[0035] The V-groove substrate 601 is positioned above the lifting support plate 11 and below the optical fiber body 9. Multiple parallel adsorption V-grooves 602 are formed on the V-groove substrate 601, each accommodating one optical fiber body 9. A vacuum chamber 603 is disposed inside the V-groove substrate 601 and extends along its length or width. A vacuum nozzle 605 is disposed on the side of the V-groove substrate 601 and is used to connect to an external vacuum source, enabling a negative pressure state to be formed inside the vacuum chamber 603.

[0036] It should be noted that in this embodiment, the V-groove substrate 601 is supported by a lifting support plate 11, which is connected below the floating connecting seat 2. The floating connecting seat 2 is located below the top connecting plate 4, and support springs 3 are arranged at intervals above the floating connecting seat 2. The lower end of the support spring 3 is supported on the floating connecting seat 2, and the upper end of the support spring 3 abuts against the top connecting plate 4. Thus, when the assembly area containing the V-groove substrate 601, the independent cover plate 6, and the optical fiber body 9 is subjected to holding force, the lifting support plate 11 can move slightly up and down with the floating connecting seat 2, giving the adsorption-in-groove assembly a certain height compensation capability during the holding and adsorption process.

[0037] Furthermore, spherical steel balls are disposed between the floating connector 2 and the lifting support plate 11, with the spherical steel balls located between the relatively pressure-bearing areas of the floating connector 2 and the lifting support plate 11. These spherical steel balls are not shown separately as a new reference numeral; their main function is to form a point-contact adaptive balance support when the lifting support plate 11 is subjected to localized off-center loading. When the V-groove substrate 601 or the independent cover plate 6 exerts a large holding force on one side of the lifting support plate 11, the spherical steel balls can cause a slight angular adaptive adjustment of the lifting support plate 11 through the spherical point-contact structure, thereby reducing the adverse effects of tilting or swaying of the lifting support plate 11 on the insertion accuracy of the optical fiber body 9.

[0038] Simultaneously, the adsorption holes 604 extend from the adsorption V-groove 602 to the vacuum chamber 603. The adsorption holes 604 can be located at the bottom of the adsorption V-groove 602 or on the side wall near the bottom of the adsorption V-groove 602. After the external vacuum source is activated, negative pressure is sequentially transmitted through the vacuum nozzle 605, the vacuum chamber 603, and the adsorption holes 604 to the area below the optical fiber body 9, causing the optical fiber body 9 to be adsorbed and attached to the surface of the adsorption V-groove 602. Because the adsorption holes 604 are spaced apart, the optical fiber body 9 is not completely fixed by continuous negative pressure, and a small amount of axial adjustment space is still maintained.

[0039] Furthermore, the independent cover plate 6 is pressed onto the fiber body 9 after the fiber body 9 has completed its initial insertion into the groove. The independent cover plate 6 provides an upper limit for the fiber body 9, preventing it from jumping up or detaching from the V-groove substrate 601 due to pre-bending release. The pressing action of the independent cover plate 6 and the negative pressure adsorption action of the adsorption hole 604 together limit the height position of the fiber body 9. However, since the adsorption hole 604 is not a continuous long groove structure, the slight axial slippage of the fiber body 9 will not be completely blocked. At the same time, the lifting support plate 11 obtains elastic floating capability through the support spring 3 and adaptive balancing capability through the spherical steel ball set between the floating connecting seat 2 and the lifting support plate 11. This makes it less likely that the local pressure of the independent cover plate 6 pressing down will directly cause the V-groove substrate 601 or the lifting support plate 11 to tilt significantly, thereby further ensuring the groove stability of the fiber body 9 in the adsorption V-groove 602.

[0040] It is important to note that in areas where high precision is required on the FAU end face, the adsorption holes 604 can be densely spaced with a smaller hole spacing to ensure stable slotting near the end face of the fiber body 9. Conversely, in the tail section region far from the FAU end face, the adsorption holes 604 can be sparsely spaced with a larger hole spacing, making it easier for the tail section of the fiber body 9 to generate axial compensation during release and rebound. This dense hole arrangement at the front and sparse arrangement at the tail section balances end face slotting stability and overall axial adaptive sliding capability.

[0041] To further explain, the aperture, spacing, and distribution of the adsorption area of ​​the adsorption hole 604 can be selected based on the outer diameter of the fiber body 9, the length of the adsorption V-groove 602, the magnitude of the vacuum source negative pressure, and the assembly precision requirements of the V-groove fiber array unit. As long as the adsorption hole 604 allows the fiber body 9 to adhere to the groove surface of the adsorption V-groove 602 and retains adaptive sliding space in the axial direction of the fiber body 9, the usage requirements of this embodiment can be met. The cooperation between the lifting support plate 11, the floating connector 2, the support spring 3, and the spherical steel ball provides elastic floating support and adaptive balance support during the above adsorption and holding process, thereby reducing the impact of assembly off-center loading, uneven holding, and local height errors on the fiber insertion quality.

[0042] Through the above structure, the V-groove substrate 601, the adsorption V-groove 602, the vacuum chamber 603, the adsorption hole 604, and the vacuum nozzle 605 form an intermittent vacuum adsorption groove structure, which enables the optical fiber body 9 to retain axial adaptive sliding space while adhering to the groove surface of the adsorption V-groove 602; the lifting support plate 11, the floating connection seat 2, the support spring 3, and the spherical steel ball set between the floating connection seat 2 and the lifting support plate 11 form an elastic floating and point contact adaptive balance structure, which can reduce the risk of tilting of the lifting support plate 11 when the independent cover plate 6 is pressed or the V-groove substrate 601 is under force, thereby improving the adequacy of the optical fiber body 9 in the groove and the assembly consistency.

[0043] Working principle: In use, the top connecting plate 4 is fixedly connected to the mounting base 1, and the fiber optic vacuum clamping fixture 5 uses the top connecting plate 4 as a fixed mounting reference to keep the fiber optic body 9 in the correct direction. Then, the V-groove substrate 601 is placed in the assembly area of ​​the lifting support plate 11, aligning the V-groove substrate 601 with the fiber exit direction of the fiber optic vacuum clamping fixture 5. The fiber optic body 9 is temporarily clamped and guided by the fiber optic vacuum clamping fixture 5. After the pneumatic quick connector 10 is connected to the external negative pressure air path, the fiber optic vacuum clamping fixture 5 can maintain the fiber optic body 9 in the correct orientation. The plug 8 is used to seal the end of the air path, reducing the impact of air leakage on clamping stability.

[0044] Subsequently, the optical fiber body 9 is guided into the space between the independent cover plate 6 and the V-groove substrate 601 in a preset bent state, allowing the optical fiber body 9 to enter the corresponding adsorption V-groove 602 on the V-groove substrate 601. An external vacuum source is connected to the vacuum chamber 603 through a vacuum nozzle 605, and negative pressure is distributed to multiple adsorption holes 604 through the vacuum chamber 603. The adsorption holes 604 generate segmented negative pressure adsorption on the optical fiber body 9, causing the optical fiber body 9 to adhere to the groove surface of the adsorption V-groove 602. Since the adsorption holes 604 are spaced apart along the length of the adsorption V-groove 602, the optical fiber body 9 will not be completely locked axially by the continuous adsorption structure.

[0045] Subsequently, the independent cover plate 6 is pressed onto the optical fiber body 9, so that the optical fiber body 9 is jointly constrained by the independent cover plate 6 and the adsorption holes 604. When the pre-bending constraint of the optical fiber body 9 is removed, the optical fiber body 9 generates a slight rebound displacement due to its own elastic recovery. This rebound displacement can break the static friction lock between the optical fiber body 9 and the groove wall of the adsorption V groove 602. Due to the spaced distribution of the adsorption holes 604, the optical fiber body 9 can generate partial adaptive sliding in the axial direction, further approaching the positioning edge of the adsorption V groove 602, and completing a more complete insertion into the groove.

[0046] In the above process, the lifting support plate 11 supports the assembly area where the independent cover plate 6 and the V-groove base plate 601 are located. The top connecting plate 4 is fixedly connected above the mounting base 1 and serves as the fixed abutment base for the upper end of the support spring 3; the floating connecting seat 2 is located below the top connecting plate 4, and the support springs 3 are arranged at intervals above the floating connecting seat 2, with the lower end of the support spring 3 supporting the floating connecting seat 2 and the upper end of the support spring 3 pressing against the top connecting plate 4; the lifting support plate 11 is connected below the floating connecting seat 2 and floats up and down synchronously with the floating connecting seat 2. At the same time, spherical steel balls are provided between the floating connecting seat 2 and the lifting support plate 11, and the spherical steel balls are located between the relative pressure-bearing areas of the two, so that the floating connecting seat 2 and the lifting support plate 11 form a point contact pressure-bearing fit.

[0047] When the pressure or assembly force changes, the lifting support plate 11 first transmits the load to the floating connecting seat 2 via spherical steel balls. The floating connecting seat 2 then compresses the support spring 3 relative to the top connecting plate 4, causing the support spring 3 to undergo elastic deformation. The elastic deformation of the support spring 3 allows the floating connecting seat 2 and the lifting support plate 11 to float slightly up and down, thereby absorbing local assembly impacts and height errors. Compared with rigid surface contact force transmission, the spherical steel balls form a point contact adaptive balance support between the floating connecting seat 2 and the lifting support plate 11. When the independent cover plate 6, the V-groove substrate 601, or the optical fiber body 9 exerts a large local pressure on one side of the lifting support plate 11, the spherical steel balls allow the lifting support plate 11 to make slight angle adjustments according to the direction of the force, so that the local off-center load does not directly translate into overall tilting.

[0048] Therefore, the support spring 3 mainly undertakes the functions of elastic floating and height compensation, while the spherical steel ball mainly undertakes the function of point contact adaptive balancing. With the two working together, the lifting support plate 11 can not only generate necessary slight up and down floating during the pressing and adsorption process, but also perform slight leveling when subjected to unilateral load, thereby reducing the risk of tilting or swaying of the lifting support plate 11 and uneven pressure on the optical fiber body 9.

[0049] The floating limiting groove 701 on the front positioning seat 7 limits the floating range of the lifting support plate 11, preventing the lifting support plate 11 from moving excessively downward or swaying; the top connecting plate 4 remains fixed, so that the guide reference of the fiber vacuum clamping fixture 5 does not float with the lifting support plate 11. Through the cooperation of fixed guide reference, intermittent vacuum adsorption, independent cover plate 6 pressing, pre-bending release, elastic floating support of support spring 3 and adaptive balance of spherical steel ball point contact, the fiber body 9 can enter the V-groove substrate 601 more stably and improve the assembly consistency of V-groove fiber array units.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A fiber vacuum clamping fixture for assembling V-groove fiber array units, comprising a mounting base (1) and a fiber body (9), characterized in that: Also includes: The floating support assembly is disposed above the mounting base (1) and includes a top connecting plate (4) fixedly connected to the top of the mounting base (1), a floating connecting seat (2) disposed below the top connecting plate (4), support springs (3) spaced apart above the floating connecting seat (2), and a lifting support plate (11) connected below the floating connecting seat (2) for providing elastic floating support for the upper assembly area; The fiber guide assembly is disposed on one side of the top connecting plate (4) and includes a fiber vacuum clamping fixture (5) for clamping and guiding the fiber body (9). The adsorption inlet assembly is disposed on the inlet path of the optical fiber body (9), including a V-groove substrate (601) for supporting the optical fiber body (9) and an independent cover plate (6) for pressing the optical fiber body (9). The V-groove substrate (601) is used to perform intermittent vacuum adsorption on the optical fiber body (9). A front-end positioning component is disposed at the front end of the mounting base (1) and is used to limit the floating range of the floating support component; The lower end of the support spring (3) is supported on the floating connecting seat (2), the upper end of the support spring (3) abuts against the top connecting plate (4), and the lifting support plate (11) floats up and down synchronously with the floating connecting seat (2); the interval vacuum adsorption causes the optical fiber body (9) to adhere to the groove surface of the V-groove substrate (601) and retains adaptive sliding space in the axial direction of the optical fiber body (9).

2. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 1, characterized in that: The support spring (3) is disposed between the top connecting plate (4) and the floating connecting seat (2). The lower end of the support spring (3) abuts against the floating connecting seat (2), and the upper end of the support spring (3) abuts against the top connecting plate (4), so that the floating connecting seat (2) can elastically float up and down relative to the top connecting plate (4).

3. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 2, characterized in that: The lifting support plate (11) is fixedly or detachably connected to the bottom of the floating connecting seat (2). The lifting support plate (11) is used to support the assembly area corresponding to the V-groove base plate (601) and the independent cover plate (6).

4. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 2, characterized in that: The support spring (3) is provided in two parts, and the two support springs (3) are arranged at intervals along the length or width of the floating connecting seat (2) to provide balanced elastic support for the floating connecting seat (2) and the lifting support plate (11).

5. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 1, characterized in that: One side of the optical fiber vacuum clamping fixture (5) is connected to a pneumatic quick connector (10), and a plug (8) is provided at the end of the air passage of the optical fiber vacuum clamping fixture (5). The pneumatic quick connector (10) is used to connect to an external negative pressure air passage, and the plug (8) is used to seal the end of the air passage of the optical fiber vacuum clamping fixture (5).

6. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 1, characterized in that: The V-groove substrate (601) has an adsorption V-groove (602) for accommodating the optical fiber body (9), and the independent cover plate (6) is disposed above the adsorption V-groove (602) to restrict the optical fiber body (9) from detaching upward from the adsorption V-groove (602).

7. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 6, characterized in that: A vacuum chamber (603) is provided inside the V-groove substrate (601), and an adsorption hole (604) communicating with the vacuum chamber (603) is opened in the adsorption V-groove (602). A vacuum nozzle (605) communicating with the vacuum chamber (603) is provided on one side of the V-groove substrate (601).

8. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 7, characterized in that: The adsorption pores (604) are configured as a plurality of pores, which are distributed at intervals along the length of the adsorption V groove (602), and a discontinuous adsorption segment is formed between adjacent pores (604).

9. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 8, characterized in that: The V-groove substrate (601) is provided with a first adsorption region and a second adsorption region along the groove direction of the optical fiber body (9). The distance between adjacent adsorption holes (604) in the first adsorption region is smaller than the distance between adjacent adsorption holes (604) in the second adsorption region.

10. The fiber vacuum clamping fixture for assembling V-groove fiber array units according to claim 3, characterized in that: The front-end positioning component includes a front-end positioning seat (7), which is fixedly connected to the front end of the mounting base (1). The front-end positioning seat (7) is provided with a floating limiting groove (701), which extends along the floating direction of the lifting support plate (11) and is correspondingly provided with the front end of the lifting support plate (11) to limit the vertical floating range of the lifting support plate (11).

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