Automatic assembly device and assembly method for optical fiber array

Abstract

The invention discloses an automatic assembly device and an assembly method for an optical fiber array, and mainly solves the problems of low fiber threading precision, low degree of freedom and low degree of automation in the prior art. The workbench (1) is located on the XOY plane of a world coordinate system, the feeding mechanism (2), the dispensing mechanism (3) and the fiber penetrating and assembling mechanism (4) are installed on the workbench face of the workbench and arranged in a Y-axis linear mode, and the fiber penetrating and assembling mechanism comprises a Y-axis linear module laid on the workbench and a six-axis mechanical arm capable of moving along the Y-axis linear module. A visual camera and a first nanometer motion platform are fixed to the wrist portion and the free end of the six-axis mechanical arm respectively, and an optical fiber micro clamping device is fixed to the first nanometer motion platform. An optical fiber processing mechanism (5) is mounted between the feeding mechanism and the dispensing mechanism and is used for stripping, cutting and damage detection of optical fibers; and the fiber penetrating assembly mechanism and the three mechanisms are arranged side by side. According to the invention, the automation degree and the assembly qualification rate of the optical fiber array assembly are improved, and the method can be used for optical communication and chip manufacturing.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical communication and automation equipment, and in particular relates to an optical fiber array automatic assembly device and an assembly method, which can be used for optical communication and chip manufacturing. Background Art

[0002] A fiber array is an integrated component that fixes multiple optical fibers to a specific substrate in a high-precision, ordered geometric structure. In optical integrated circuits such as photonic chips, multiple optical signals need to be input and output simultaneously. Fiber arrays serve as the interface between the optical path and optical devices, making them key components. Fiber array assembly refers to the process of precisely positioning, threading, and dispensing multiple optical fibers according to a preset geometric structure. A fiber array assembly device is an automated or semi-automated system designed specifically for fiber array assembly. Its core function is to package multiple optical fibers from their original state into a high-density array structure.

[0003] In recent years, as optical communications and chip manufacturing industries have progressed toward integration, miniaturization, and multi-functionality, the use of high-density, multi-channel fiber arrays instead of individual optical fibers for signal transmission has become an indispensable option. Fiber array assembly is a prerequisite for achieving its full potential, and its quality directly impacts the efficiency and quality of signal transmission.

[0004] Patent document No. 202210603310.7 discloses an automatic assembly coupling device for an optical fiber array, which includes an optical fiber and a base plate, a fiber threading assembly mechanism, a glue dispensing mechanism, a loading mechanism, and a moving mechanism. The loading mechanism is configured to load the base plate and the cover plate; the moving mechanism moves the base plate and the cover plate to the fiber threading assembly mechanism in sequence; the fiber threading assembly mechanism is used to load the optical fiber and insert the optical fiber into the base plate, and the glue dispensing mechanism fixes the optical fiber by glue dispensing. Although the device realizes the automatic assembly of the optical fiber array, since the fiber threading assembly mechanism it uses is composed of a combination of multiple single-axis modules, and the optical fiber is in a slightly bent state in most cases, this combination method limits the accuracy and degree of freedom when threading the optical fiber. At the same time, since the device does not perform necessary fiber stripping, damage detection, and other related processing on the optical fiber array before assembly, it will result in a low fiber threading pass rate, affecting the quality of optical signal transmission. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and propose an automatic assembly device and assembly method for optical fiber arrays to improve the accuracy and freedom of optical fiber threading and improve the qualified rate of assembly by increasing the pretreatment of optical fiber assembly.

[0006] To achieve the above objectives, the technical solutions of the present invention include:

[0007] 1. An automatic fiber array assembly device comprising a workbench 1 located on the XOY plane of a world coordinate system, a loading mechanism 2 mounted on the workbench and linearly arranged along the Y axis, a dispensing mechanism 3, and a fiber threading assembly mechanism 4, characterized in that:

[0008] The fiber threading assembly mechanism 4 includes a Y-axis linear module 41 laid on the workbench 1 and a six-axis robotic arm 42 that can move along the Y-axis linear module 41. The wrist and free end of the six-axis robotic arm 42 are respectively fixed with a visual camera 43 and a first nano-motion platform 44. The first nano-motion platform 44 is fixed with a fiber micro-gripper 45.

[0009] An optical fiber processing mechanism 5 is installed between the feeding mechanism 2 and the glue dispensing mechanism 3.

[0010] Furthermore, the Y-axis linear module 41 includes a guide rail and a slider that can move along the guide rail, and the slider is fixed to the bottom end of the six-axis robotic arm 42.

[0011] Furthermore, the optical fiber processing mechanism 5 includes an optical fiber stripping and cutting module 51 and a damage detection module 52;

[0012] The optical fiber stripping and cutting module 51 includes a second bracket 511 and an optical fiber stripping and cutting unit 512. The lower end of the second bracket 511 is fixed to the workbench 1, and the upper end is fixed to the optical fiber stripping and cutting unit 512 for stripping and cutting optical fibers.

[0013] The damage detection module 52 includes a third bracket 521, a microscopic vision second detection unit 522 and a microscopic vision third detection unit 523. The lower end of the third bracket 521 is fixed on the workbench 1, and the upper end is fixed to the horizontal microscopic vision second detection unit 522 and the vertical microscopic vision third detection unit 523.

[0014] 2. A method for assembling an optical fiber array using the device of claim 1, comprising:

[0015] 1) The loading mechanism divides the loaded optical fibers into an array structure and determines the world coordinates of the optical fibers to be assembled;

[0016] 2) The fiber threading assembly mechanism adjusts its own position according to the world coordinates of the optical fiber to be assembled. After the adjustment, the fiber threading assembly mechanism clamps the optical fiber to be assembled and transfers it to the position of the optical fiber processing mechanism;

[0017] 3) The optical fiber processing mechanism performs fiber stripping, cutting, and damage detection on the optical fiber to be assembled clamped by the fiber threading and assembly mechanism, and then transfers the processed optical fiber to be assembled to the dispensing mechanism;

[0018] 4) The fiber threading assembly mechanism threads the optical fiber to be assembled and the optical chip to be threaded in the dispensing mechanism, and after the fiber threading is completed, the dispensing mechanism dispenses glue to complete the assembly of a single optical fiber;

[0019] 5) Repeat steps 2) to 4) until the entire fiber array is assembled.

[0020] Furthermore, the optical fiber processing mechanism performs stripping, cutting, and damage detection on the optical fiber, and its implementation includes:

[0021] 3a) The fiber stripping and cutting module strips the end of the optical fiber to be assembled, which is clamped from the fiber splitter module. It uses ultraviolet laser to spirally scan along the axial direction of the optical fiber to ablate the outer surface coating of the optical fiber to achieve the stripping of the coating;

[0022] 3b) Scanning the stripped optical fiber along the cleavage plane with a laser to form a directional fracture induced by thermal stress at the end face of the optical fiber, thereby completing the cleavage of the optical fiber;

[0023] 3c) The damage detection module uses the second and third microscopic vision detection units to detect damage on the top, end, and bottom surfaces of the optical fiber to be assembled after stripping and cutting:

[0024] If there are no scratches or cracks on the upper and lower surfaces of the optical fiber, and the end face is flat and has no protrusions, the optical fiber inspection is qualified, and the optical fiber to be assembled is moved to the dispensing mechanism through the fiber threading assembly mechanism;

[0025] If there are scratches or cracks on the upper and lower surfaces of the optical fiber, or if the end face is uneven and has protrusions, the optical fiber inspection fails. The fiber assembly mechanism sends the optical fiber to be assembled back to the optical fiber stripping and cutting module for stripping and cutting, and then inspects it again.

[0026] Furthermore, the fiber threading assembly mechanism threads the optical fiber to be assembled and the optical chip to be threaded in the dispensing mechanism, and its implementation includes:

[0027] 4a) A visual camera fixed to the wrist of the six-axis robotic arm locates the fiber optic chip to be threaded in the dispensing mechanism and obtains its world coordinates. The fiber threading assembly mechanism then moves the fiber to be assembled onto the fiber optic chip based on these coordinates.

[0028] 4b) The fourth microscopic vision detection unit in the dispensing mechanism detects the position of the optical fiber to be assembled to obtain the position adjustment value, and the fifth microscopic vision detection unit locates the hole to be inserted on the optical chip to obtain its world coordinates;

[0029] 4c) The fiber threading assembly mechanism adjusts the position of the optical fiber to be assembled according to the position adjustment amount provided by the fourth microscopic vision detection unit, aligns the optical fiber to be assembled with the hole to be threaded on the optical chip to be threaded according to the world coordinates provided by the fifth microscopic vision detection unit, and then clamps the optical fiber to be assembled and inserts it into the hole to be threaded.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] First, the optical fiber processing mechanism in the device of the present invention is equipped with an optical fiber stripping and cutting module and a damage detection module for pre-processing the optical fiber assembly, including stripping and cutting the optical fiber, and detecting scratches, cracks, and flatness on the optical fiber. Compared with the existing technology, it improves the pass rate of optical fiber threading and the quality of optical signal transmission.

[0032] Secondly, the fiber threading assembly mechanism in the device of the present invention adopts a six-axis robotic arm instead of the multi-axis module in the prior art, which can realize the six-degree-of-freedom position adjustment of the optical fiber and improve the degree of freedom during fiber threading; at the same time, the use of a nano-motion platform to drive the optical fiber micro-clamp to clamp the optical fiber solves the problem of low precision in clamping the optical fiber. Compared with the prior art, the accuracy and degree of freedom during fiber threading are greatly improved, and optical fibers in different bending states can be automatically assembled by precisely adjusting their posture.

[0033] Third, the present invention improves the automation level and assembly qualification rate of optical fiber arrays compared with the prior art because it uses optical fiber loading, fiber splitting, fiber stripping, cutting, damage detection, fiber threading and glue dispensing, which cover the necessary processes for optical fiber array assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A perspective view of the overall structure of the optical fiber array automatic assembly device provided by an embodiment of the present invention;

[0035] Figure 2 for Figure 1 Schematic diagram of the feeding mechanism structure;

[0036] Figure 3 for Figure 1 Schematic diagram of the fiber threading assembly mechanism structure;

[0037] Figure 4 for Figure 1 Schematic diagram of the optical fiber processing mechanism structure;

[0038] Figure 5 for Figure 1 Schematic diagram of the dispensing mechanism structure;

[0039] Figure 6 for Figure 5A partial enlarged view of the dispensing mechanism;

[0040] Figure 7 for Figure 1 Schematic diagram of the fiber optic chip to be threaded;

[0041] Figure 8 The present invention is a flowchart for assembling an optical fiber array using the optical fiber array automatic assembly device of the present invention. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Embodiment 1, optical fiber array automatic assembly device

[0044] Reference Figure 1 This example includes a workbench 1, a loading mechanism 2, a glue dispensing mechanism 3, a fiber threading assembly mechanism 4 and an optical fiber processing mechanism 5. The workbench 1 is the bearing part of the entire device. The loading mechanism 2, the optical fiber processing mechanism 5, and the glue dispensing mechanism 3 are all installed on the workbench 1 and arranged linearly along the Y-axis. The fiber threading assembly mechanism 4 is arranged side by side with the above three mechanisms.

[0045] Reference Figure 2 The loading mechanism 2 of this example includes a fiber loading plate 21 and a fiber splitting module 22. The fiber splitting module 22 includes a first bracket 221, a fiber splitting substrate 222, a Z-axis linear module 223 and a microscopic vision first detection unit 224. The fiber splitting substrate 222 is adjacent to the fiber stripping and cutting module 51 along the Y-axis direction and is fixed on the workbench 1. It consists of several fiber splitting slots, and each fiber splitting slot contains only one optical fiber. The fiber loading plate 21 is fixed to the frame of the workbench 1 by hoisting. The first bracket 221 is located below the fiber loading plate 21 and fixed to the workbench 1. The fiber splitting substrate 222 and the Z-axis linear module 223 are both fixed to the first bracket 221, and the Z-axis linear module 223 is located below the fiber splitting substrate 222. One end of several originally disordered optical fibers is fixed by the fiber loading plate 21, and the other end is manually placed into the fiber splitting substrate 222. The first microscopic vision detection unit 224 is fixed to the fiber splitting substrate 222 via a slider set at the end of the Z-axis linear module 223.

[0046] Reference Figure 3The fiber threading assembly mechanism 4 of this example includes a Y-axis linear module 41, a six-axis robotic arm 42, a visual camera 43, a first nano-motion platform 44, and a fiber micro-gripper 45. The Y-axis linear module 41 is fixed on the workbench 1 side by side with the loading mechanism 2, the fiber processing mechanism 5, and the dispensing mechanism 3. The slider provided thereon is fixed to the bottom end of the six-axis robotic arm 42. The visual camera 43 and the first nano-motion platform 44 are respectively fixed to the wrist and free end of the six-axis robotic arm 42. The six-axis robotic arm 42 can move within a range of 1-3 meters in the Y direction along the Y-axis linear module. It can achieve six degrees of freedom and movement and rotation within a range of 1 meter through a combination of multiple curved links and joints. The fiber micro-gripper 45 is fixed on the first nano-motion platform 44 and is used to clamp the optical fiber to be assembled and send it to the fiber processing mechanism 5. The first nano-motion platform 44 can drive the fiber micro-gripper 45 to move in six degrees of freedom within the nanometer-submicron range.

[0047] Reference Figure 4 The optical fiber processing mechanism 5 of this embodiment includes an optical fiber stripping and cutting module 51 and a damage detection module 52. The optical fiber stripping and cutting module 51 is located between the fiber splitting substrate 222 and the damage detection module 52 along the Y-axis direction and is fixed to the workbench 1. The damage detection module 52 is located between the optical fiber stripping and cutting module 51 and the three-degree-of-freedom module 31 along the Y-axis direction and is fixed to the workbench 1. The optical fiber stripping and cutting module 51 includes a second bracket 511 and an optical fiber stripping and cutting unit 512. The lower end of the second bracket 511 is fixed to the workbench 1, and the upper end is fixed to the optical fiber stripping and cutting unit 512. The optical fiber stripping and cutting unit 512 is used to clamp the optical fiber to be assembled by the fiber assembly mechanism 4 for stripping and cutting. In this embodiment, the diameter of the optical fiber to be assembled is 250 μm before stripping and 80 μm after stripping. The damage detection module 52 includes a third bracket 521, a microscopic vision second detection unit 522 and a microscopic vision third detection unit 523. The lower end of the third bracket 521 is fixed on the workbench 1, and the upper end is fixed to the horizontal microscopic vision second detection unit 522 and the vertical microscopic vision third detection unit 523.

[0048] Reference Figure 5 and Figure 6The dispensing mechanism 3 of this embodiment includes a three-degree-of-freedom module 31, a second nano-motion platform 32, a fiber optic dispensing head 33, a fiber optic chip to be threaded 34, a fourth bracket 35, a fourth microscopic vision detection unit 36, and a fifth microscopic vision detection unit 37. The three-degree-of-freedom module 31 is adjacent to the damage detection module 52 and fixed on the workbench 1. A slider is provided at the end of the module and fixed to the upper end of the second nano-motion platform 32. The fiber optic dispensing head 33 is fixed to the end of the nano-motion platform 32. The fiber optic chip to be threaded 34 is located on the inner side of the three-degree-of-freedom module 31 and is fixed to the workbench 1 via the fourth bracket 35. The fourth microscopic vision detection unit 36 ​​and the fifth microscopic vision detection unit 37 are fixed to the workbench 1 and are respectively located to the side and below the fiber optic chip to be threaded 34.

[0049] Reference Figure 7 The parameters of the fiber optic chip to be threaded used in this example are, but not limited to, 35 mm in length, 33 mm in width, and 6.6 mm in thickness. It is made of glass and has eight fiber array ribbons distributed thereon. Each fiber array ribbon has 312 holes to be threaded, and each hole has a diameter of 83 μm. The entire fiber optic chip to be threaded contains 2496 holes to be threaded. The fiber threading assembly mechanism 4 inserts the optical fibers to be assembled into the holes to be threaded in the fiber optic chip to be threaded. The 2496 fibers inserted into the holes constitute the complete fiber array of this example.

[0050] Example 2: Method for assembling an optical fiber array using the above-mentioned optical fiber array automatic assembly device

[0051] Reference Figure 8 , the present invention example comprises the following steps:

[0052] Step 1: Manually load and split optical fibers.

[0053] When assembly begins, one end of several originally disordered optical fibers is manually fixed through the optical fiber loading plate 21, and the other end is divided into an array structure through the fiber splitting substrate 222. After the first microscopic vision detection unit 224 adjusts the focus through the Z-axis linear module 223, it photographs the optical fiber to be assembled to obtain its world coordinates, and sends the coordinates to the fiber threading assembly mechanism 4.

[0054] Step 2: The fiber threading assembly mechanism clamps the optical fiber to be assembled.

[0055] The six-axis robot arm 42 adjusts itself along the Y-axis linear module 41 according to the world coordinates provided by the first microscopic vision detection unit 224 and moves to the vicinity thereof;

[0056] The first nano-motion platform 44 accurately adjusts the position of the optical fiber micro-gripper 45 according to the world coordinates of the optical fiber to be assembled, so that the optical fiber micro-gripper 45 moves to the top of the optical fiber to be assembled;

[0057] The optical fiber micro-clamp 45 clamps the optical fiber to be assembled, and the six-axis robot arm 42 transfers the optical fiber to be assembled to the optical fiber processing mechanism 5 along the Y-axis linear module 41, and then keeps the optical fiber in a clamped state.

[0058] Step 3: The optical fiber processing mechanism strips, cuts, and detects damage on the optical fiber to be assembled.

[0059] The optical fiber stripping and cutting module 51 strips the end of the optical fiber to be assembled, which is clamped from the fiber splitting module 22, by using ultraviolet laser to spirally scan along the axial direction of the optical fiber to ablate the outer surface coating of the optical fiber to achieve the stripping of the coating;

[0060] The laser is used to scan the stripped optical fiber along the cutting surface to form a directional fracture induced by thermal stress at the end face of the optical fiber, thus completing the cutting of the optical fiber;

[0061] After the cutting is completed, it is sent to the damage detection module 52 for damage detection of the upper surface, end surface and lower surface, and different detection results including scratches, cracks, or uneven end surfaces with protrusions are obtained.

[0062] Step 4: Treat the damage of the optical fiber to be assembled.

[0063] This example performs different processing based on different damage results detected:

[0064] If there are scratches or cracks on the upper and lower surfaces of the optical fiber, or if the end face is uneven and has protrusions, the optical fiber test fails. The fiber threading and assembly mechanism 4 sends the optical fiber to be assembled back to the optical fiber stripping and cutting module 51 for stripping and cutting, and then tests again.

[0065] If there are no scratches or cracks on the upper and lower surfaces of the optical fiber, and the end face is flat and has no protrusions, the optical fiber inspection is qualified, and the optical fiber to be assembled is moved to the dispensing mechanism 3 through the fiber threading assembly mechanism 4.

[0066] Step 5: The fiber insertion assembly mechanism inserts the optical fiber to be assembled into the hole to be inserted.

[0067] 5.1) A visual camera mounted on the wrist of the six-axis robotic arm locates the fiber optic chip in the dispensing mechanism and obtains its world coordinates. The fiber assembly mechanism then moves the fiber to be assembled onto the fiber optic chip based on these coordinates.

[0068] 5.2) The fourth microscopic vision detection unit in the dispensing mechanism detects the position of the optical fiber to be assembled and obtains the position adjustment value. The fifth microscopic vision detection unit locates the hole to be inserted on the optical chip to obtain its world coordinates.

[0069] 5.3) The fiber threading assembly mechanism adjusts the position of the optical fiber to be assembled based on the position adjustment amount provided by the fourth microscopic vision detection unit, aligns the optical fiber to be assembled with the hole to be inserted on the optical chip to be inserted based on the world coordinates provided by the fifth microscopic vision detection unit, and then clamps the optical fiber to be assembled and inserts it into the hole to be inserted.

[0070] Step 6: The dispensing mechanism dispenses glue to the optical fiber and the hole.

[0071] The three-degree-of-freedom module 31 and the second nano-motion platform 32 drive the optical fiber dispensing head 33 to move precisely to the top of the assembly hole according to the world coordinates provided by the fifth microscopic vision detection unit 37, and dispense glue to the optical fiber that has just been inserted into the hole and the hole. After the dispensing is completed, the fiber threading assembly mechanism 4 stops clamping the optical fiber, thus completing the assembly of one optical fiber;

[0072] Step 7: Complete the fiber array assembly.

[0073] The fiber threading and assembly mechanism 4 returns to the fiber splitting substrate 222 to clamp the next optical fiber to be assembled, and repeats steps 2 to 6 to complete the assembly of the current optical fiber.

[0074] Step 7: Repeat steps 2 to 7 until the entire optical fiber array is assembled.

[0075] The above description is merely a specific example of the present invention and does not constitute any limitation thereto. It is clear that, after understanding the content and principles of the present invention, those skilled in the art may, without departing from the principles and structure of the present invention, make various modifications and changes in form and detail. For example, the fiber splitting substrate in the loading mechanism could be replaced with a pulley assembly to achieve fiber splitting, and the fiber threading assembly mechanism could improve assembly efficiency by increasing the number of six-axis robotic arms. However, such modifications and changes based on the principles of the present invention remain within the scope of protection of the claims.

[0076] It should be noted that the step numbers in the specification and claims of the present invention are only for a clear description of the embodiments of the present invention and for ease of understanding, and the order of the step numbers is not limited.

Claims

1. An automatic assembly device for an optical fiber array, comprising a workbench (1) located on the XOY plane of a world coordinate system, a loading mechanism (2) mounted on the workbench and linearly arranged on the Y axis, a dispensing mechanism (3) and a fiber threading assembly mechanism (4), characterized in that: The fiber threading assembly mechanism (4) comprises a Y-axis linear module (41) laid on a workbench (1) and a six-axis robotic arm (42) capable of moving along the Y-axis linear module (41), wherein a visual camera (43) and a first nano-motion platform (44) are fixed to the wrist and the free end of the six-axis robotic arm (42), respectively, and an optical fiber micro-gripper (45) is fixed to the first nano-motion platform (44); An optical fiber processing mechanism (5) is installed between the feeding mechanism (2) and the glue dispensing mechanism (3).

2. The device according to claim 1, characterized in that The loading mechanism (2) comprises a fiber loading plate (21) on a hoisting workbench frame and a fiber splitting module (22) on a fixed workbench surface, wherein the fiber splitting module (22) comprises a first bracket (221), a fiber splitting substrate (222), a Z-axis linear module (223) and a microscopic vision first detection unit (224); The lower end of the first bracket (221) is fixed on the workbench (1), and the upper end is fixed to the fiber splitting substrate (222); The fiber splitting substrate (222) is composed of a plurality of equally spaced optical fiber splitting slots arranged along the Z axis and having the same scale as the optical fiber array to be assembled; The Z-axis linear module (223) is fixed on the first bracket (221) and is located below the fiber splitting substrate (222); The microscopic vision first detection unit (224) is fixed to a sliding block provided at the end of the Z-axis linear module (223).

3. The device according to claim 1, characterized in that The Y-axis linear module (41) comprises a guide rail and a slider capable of moving along the guide rail, and the slider is fixed to the bottom end of the six-axis robotic arm (42).

4. The device according to claim 1, characterized in that The optical fiber processing mechanism (5) comprises an optical fiber stripping and cutting module (51) and a damage detection module (52); The optical fiber stripping and cutting module (51) comprises a second bracket (511) and an optical fiber stripping and cutting unit (512); the lower end of the second bracket (511) is fixed on the workbench (1), and the upper end is fixed to the optical fiber stripping and cutting unit (512) for stripping and cutting optical fibers; The damage detection module (52) comprises a third bracket (521), a second microscopic vision detection unit (522), and a third microscopic vision detection unit (523); the lower end of the third bracket (521) is fixed to the workbench (1), and the upper end is fixed to the horizontal second microscopic vision detection unit (522) and the vertical third microscopic vision detection unit (523).

5. The device according to claim 1, characterized in that The dispensing mechanism (3) comprises a three-degree-of-freedom module (31), a second nano-motion platform (32), an optical fiber dispensing head (33), an optical fiber chip to be inserted (34), a fourth bracket (35), a fourth microscopic vision detection unit (36), and a fifth microscopic vision detection unit (37); The three-degree-of-freedom module (31) is fixed on the workbench (1), and a slider is provided at the end thereof and fixed to the upper end of the second nano-motion platform (32); The optical fiber dispensing head (33) is fixed to the end of the nano-motion platform (32); The fiber optic chip (34) to be threaded is located inside the three-degree-of-freedom module (31) and is fixed on the workbench (1) via a fourth bracket (35); The fourth microscopic vision detection unit (36) and the fifth microscopic vision detection unit (37) are fixed on the workbench (1) and are respectively located on the side and below the fiber optic chip (34) to be threaded.

6. A method for assembling an optical fiber array using the device according to claim 1, characterized in that: include: 1) The loading mechanism divides the loaded optical fibers into an array structure and determines the world coordinates of the optical fibers to be assembled; 2) The fiber threading assembly mechanism adjusts its own position according to the world coordinates of the optical fiber to be assembled. After the adjustment, the fiber threading assembly mechanism clamps the optical fiber to be assembled and transfers it to the position of the optical fiber processing mechanism; 3) The optical fiber processing mechanism performs fiber stripping, cutting, and damage detection on the optical fiber to be assembled clamped by the fiber threading and assembly mechanism, and then transfers the processed optical fiber to be assembled to the dispensing mechanism; 4) The fiber threading assembly mechanism threads the optical fiber to be assembled and the optical chip to be threaded in the dispensing mechanism, and after the fiber threading is completed, the dispensing mechanism dispenses glue to complete the assembly of a single optical fiber; 5) Repeat steps 2) to 4) until the entire fiber array is assembled.

7. The method according to claim 6, characterized in that The loading mechanism described in step (1) divides the loaded optical fibers into an array structure and determines the world coordinates of the optical fibers to be assembled, which is implemented by: (1a) The fiber loading plate fixes one end of a plurality of disordered and mutually interfering optical fibers loaded therein and divides them into an array structure through a plurality of equally spaced optical fiber splitting slots provided on the fiber splitting substrate; (1b) After the focus is adjusted by the Z-axis linear module, the first microscopic vision detection unit photographs the optical fiber to be assembled to obtain its world coordinates, and sends the coordinates to the fiber threading assembly mechanism.

8. The method according to claim 6, characterized in that The fiber threading assembly mechanism in step (2) adjusts its own position according to the world coordinates of the optical fiber to be assembled and clamps the optical fiber to be assembled, and its implementation includes: (2a) The six-axis robotic arm adjusts itself according to the world coordinates of the optical fiber to be assembled and moves to the vicinity of the linear module along the Y axis; (2b) The first nano-motion platform accurately adjusts the position of the optical fiber micro-gripper according to the world coordinates of the optical fiber to be assembled, so that the optical fiber micro-gripper moves above the optical fiber to be assembled; (2c) The optical fiber micro-gripper clamps the optical fiber to be assembled, and the six-axis robotic arm transfers the optical fiber to be assembled to the optical fiber processing mechanism along the Y-axis linear module.

9. The method according to claim 6, characterized in that The optical fiber processing mechanism described in step (3) performs stripping, cutting, and damage detection on the optical fiber, which is implemented by: (3a) The optical fiber stripping and cutting module strips the end of the optical fiber to be assembled, which is clamped from the fiber splitting module, by using ultraviolet laser to spirally scan along the axial direction of the optical fiber to ablate the outer surface coating of the optical fiber to achieve the stripping of the coating; (3b) Scanning the stripped optical fiber along the cutting surface with a laser to form a directional fracture induced by thermal stress at the end face of the optical fiber, thereby completing the cutting of the optical fiber; (3c) The damage detection module performs damage detection on the upper surface, end face and lower surface of the optical fiber to be assembled after stripping and cutting through the second microscopic vision detection unit and the third microscopic vision detection unit: If there are no scratches or cracks on the upper and lower surfaces of the optical fiber, and the end face is flat and has no protrusions, the optical fiber inspection is qualified, and the optical fiber to be assembled is moved to the dispensing mechanism through the fiber threading assembly mechanism; If there are scratches or cracks on the upper and lower surfaces of the optical fiber, or if the end face is uneven and has protrusions, the optical fiber inspection fails. The fiber assembly mechanism sends the optical fiber to be assembled back to the optical fiber stripping and cutting module for stripping and cutting, and then inspects it again.

10. The method according to claim 6, characterized in that In step (4), the fiber threading assembly mechanism threading the optical fiber to be assembled and the optical chip to be threaded in the dispensing mechanism, and its implementation includes: (4a) The visual camera fixed on the wrist of the six-axis robot arm locates the fiber optic chip to be threaded in the dispensing mechanism to obtain its world coordinates. The fiber threading assembly mechanism moves the optical fiber to be assembled above the fiber optic chip to be threaded according to this coordinate. (4b) The fourth microscopic vision detection unit in the dispensing mechanism detects the position of the optical fiber to be assembled to obtain the position adjustment amount, and the fifth microscopic vision detection unit locates the hole to be inserted on the optical chip to be inserted to obtain its world coordinates; (4c) The fiber threading assembly mechanism adjusts the position of the optical fiber to be assembled according to the position adjustment amount provided by the fourth detection unit of the microscopic vision, aligns the optical fiber to be assembled with the hole to be threaded on the optical chip to be threaded according to the world coordinates provided by the fifth detection unit of the microscopic vision, and the fiber threading assembly mechanism clamps the optical fiber to be assembled and inserts it into the hole to be threaded.

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