A tooling for assembling an MT fiber optic head with a lens on a PCB board

Abstract

This utility model relates to a fixture for assembling an MT fiber optic head with a lens on a PCB board. The upper surface of the mounting base has a groove to avoid optical components on the PCB board. A limiting groove is formed at each of the two ends of the PCB board, which is positioned above the groove. The mounting base has an adjustment mechanism fixed to a push block, which first allows the push block to abut against the tail of the MT fiber optic head and then pushes the MT fiber optic head to complete the insertion with the lens on the PCB board. The advantages are: by ensuring that the two ends of the PCB board are respectively within the two limiting grooves, the MT fiber optic head is initially aligned with the lens on the PCB board. The adjustment mechanism first allows the push block to abut against the tail of the MT fiber optic head, and then the adjustment mechanism pushes the push block to complete the insertion with the lens on the PCB board. Using this fixture to assemble the MT fiber optic head with the lens on the PCB board ensures proper assembly of the MT fiber optic head and improves product yield.

Description

Technical Field

[0001] This utility model relates to the field of optical module technology, specifically to an assembly fixture for an MT fiber optic head and a lens on a PCB board. Background Technology

[0002] During the production of optical modules, if the MT fiber head is assembled with the lens on the PCB board (the lens is first glued to the PCB board and then assembled with the MT fiber head) without tooling, it is often found that the MT fiber head is not properly assembled, which leads to a decrease in product yield. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an assembly fixture for MT fiber optic head and lens on PCB board, so as to overcome the shortcomings of the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A tooling for assembling an MT fiber optic head with a lens on a PCB board includes: a mounting base and a push block. The upper surface of the mounting base is provided with a groove for avoiding optical devices on the PCB board. On the upper surface of the mounting base, a limiting groove is provided at each of the two ends of the PCB board that spans above the groove to accommodate the ends. The mounting base is provided with an adjustment mechanism that is fixed to the push block and is used to first allow the push block to abut against the tail of the MT fiber optic head and then allow the push block to push the MT fiber optic head to complete the insertion with the lens on the PCB board.

[0005] The beneficial effects of this utility model are: The two ends of the PCB board are respectively placed in two limiting grooves, while the area on the PCB board with optical devices is placed in the groove. The MT fiber head is then initially aligned with the lens on the PCB board. First, the push block is pressed against the tail of the MT fiber head by the adjustment mechanism, and then the push block is pushed by the adjustment mechanism to complete the insertion of the MT fiber head with the lens on the PCB board. Using this fixture to complete the assembly of the MT fiber head and the lens on the PCB board can ensure that the MT fiber head is assembled in place and improve the product yield.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the push block has a first clearance groove on the side of the push block that is close to the end of the MT fiber head to avoid the guide pin in the MT fiber head. The first clearance groove penetrates the lower surface of the push block. The push block has a second clearance groove on the side of the push block that is opposite to the MT fiber head, which is connected to the first clearance groove and is used to avoid the pigtail in the MT fiber head. The second clearance groove penetrates the lower surface of the push block.

[0008] The further beneficial effect of adopting the above is that the pusher block can hold the guide pin and pigtail in the MT fiber head from top to bottom, so that the pusher block can effectively abut against the tail of the MT fiber head.

[0009] Furthermore, the distance between the wall of the first clearance groove opposite to the MT fiber head and the tail end of the guide pin in the MT fiber head is 0.4mm.

[0010] The further beneficial effect of adopting the above is that it can ensure that the installation of each module is within the same acceptable range, and avoid the assembly of the guide pins being too long or too short.

[0011] Furthermore, the adjustment mechanism includes: a sliding plate, which is located on one side of the groove and slidably connected to the mounting base. During the sliding of the sliding plate along a straight line on the mounting base, its direction of movement is in the same direction as the length direction of the PCB board. A rotating plate is provided on the side of the sliding plate adjacent to the groove. The axis of rotation of the rotating plate around the sliding plate is perpendicular to the direction of movement of the sliding plate. A push block is provided on the rotating plate.

[0012] The further beneficial effects of the above are as follows: the two ends of the PCB board are respectively placed in the two limiting grooves, while the area on the PCB board with optical devices is placed in the groove. Then, the MT fiber head is initially aligned with the lens on the PCB board. Then, the rotating plate is flipped so that the push block is between the MT fiber head and the rotating plate. Then, the sliding plate is moved so that the push block abuts against the tail of the MT fiber head. The sliding plate is moved again so that the push block pushes the MT fiber head to complete the insertion with the lens on the PCB board. After the assembly is completed, the sliding plate is moved in the opposite direction so that the push block is first moved away from the MT fiber head. Then, the rotating plate is flipped in the opposite direction so that the push block is reset. Finally, the assembled module can be removed, which facilitates the installation and removal of the MT fiber head and the PCB board.

[0013] Furthermore, a linear guide rail is provided on the mounting base, and the sliding plate is fixedly connected to the slider in the linear guide rail. The moving direction of the sliding plate on the linear guide rail is in the same direction as the length direction of the PCB board.

[0014] The further beneficial effect of adopting the above is that it can ensure that the sliding plate always moves in a straight line.

[0015] Furthermore, an elastic mechanism is provided at one end of the rotating plate near the groove, and the push block is located on the elastic mechanism.

[0016] The further beneficial effects of adopting the above are: avoiding excessive force due to hard contact during the pushing process of the pusher block pushing the MT fiber optic head. Hard contact may cause the lens on the PCB board to loosen or detach. Introducing the elastic mechanism can achieve soft contact, effectively avoiding the occurrence of lens loosening or detachment, and ensuring that the MT fiber optic head and lens are installed properly.

[0017] Furthermore, the elastic mechanism includes two locking screws and two springs. A through hole is opened on each side of the end of the rotating plate along the moving direction of the sliding plate. The screw end of each locking screw passes through a through hole on the rotating plate and is threadedly connected to the push block. The outer diameter of the nut of each locking screw is larger than the inner diameter of the through hole. The two springs are respectively fitted on the two locking screws, and the two ends of each spring abut against the push block and the rotating plate respectively.

[0018] Furthermore, both the rotating plate and the sliding plate are made of aluminum alloy.

[0019] Furthermore, both the mounting base and the push block are made of aluminum alloy.

[0020] Furthermore, the mounting bracket is fixed to the base. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the MT fiber optic head and the lens assembly fixture on the PCB board in this utility model; Figure 2 This is a structural diagram of the MT fiber optic head and the lens assembly fixture on the PCB board in this utility model, which clamps the PCB board and the MT fiber optic head. Figure 3 for Figure 2 Cross-sectional view; Figure 4 for Figure 3 Structural diagram after removing some components; Figure 5 Assembly drawing of the push block and adjustment mechanism; Figure 6 This is an assembly diagram of the pusher block, adjustment mechanism, PCB board, and MT fiber optic head.

[0022] The attached diagram lists the components represented by each number as follows: 1. Mounting base, 110. Groove, 120. Limiting groove, 2. Push block, 210. First clearance groove, 220. Second clearance groove, 3. Adjustment mechanism, 310. Sliding plate, 320. Rotating plate, 321. Through hole, 330. Linear guide rail, 340. Elastic mechanism, 341. Plug screw, 342. Spring, 4. Base, 5. PCB board, 510. Lens, 6. MT fiber optic head, 610. Guide pin, 620. Pigtail. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] Example 1 like Figures 1-6As shown, an assembly fixture for MT fiber optic head and lens on PCB board includes: a mounting base 1 and a push block 2. The upper surface of the mounting base 1 is provided with a groove 110, wherein the groove 110 is used to avoid optical devices on PCB board 5. On the upper surface of the mounting base 1, there is a limiting groove 120 on each side of the groove 110. When the PCB board 5 straddles the groove 110, the two ends of the PCB board 5 are respectively located in the two limiting grooves 120, and the limiting grooves 120 are used to accommodate the ends of the PCB board 5. The mounting base 1 is provided with an adjustment mechanism 3, and the push block 2 is mounted on the adjustment mechanism 3. The workflow of this tooling is as follows: Place the two ends of the PCB board 5 in the two limiting grooves 120 respectively, and place the area on the PCB board 5 with the optical device in the groove 110. Then, initially align the MT fiber head 6 with the lens 510 on the PCB board 5. First, use the adjustment mechanism 3 to make the push block 2 press against the tail of the MT fiber head 6, and then use the adjustment mechanism 3 to make the push block 2 push the MT fiber head 6 to complete the insertion with the lens 510 on the PCB board 5.

[0025] Example 2 like Figure 5 , Figure 6 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: The push block 2 has a first clearance groove 210 on its side that is close to the tail of the MT fiber optic head 6. The first clearance groove 210 penetrates the lower surface of the push block 2 and is used to avoid the guide pin 610 in the MT fiber optic head 6. The push block 2 has a second clearance groove 220 on its side that is away from the MT fiber optic head 6 and communicates with the first clearance groove 210. The second clearance groove 220 penetrates the lower surface of the push block 2 and is used to avoid the pigtail 620 in the MT fiber optic head 6. The push block 2 can hold the guide pin 610 and the pigtail 620 in the MT fiber optic head 6 from top to bottom, so that the push block 2 can effectively abut against the tail of the MT fiber optic head 6.

[0026] Furthermore, the distance between the wall of the first clearance groove 210 and the opposite wall of the MT fiber head 6 and the tail end of the guide pin 610 in the MT fiber head 6 is 0.4mm, which can ensure that the installation of each module is within the same acceptable range and avoid the guide pin 610 being too long or too short.

[0027] Example 3 like Figures 1-6 As shown, this embodiment is a further improvement on embodiment 1 or 2, as detailed below: The adjustment mechanism 3 includes a sliding plate 310, which is located on one side of the groove 110 and is slidably connected to the mounting base 1. During the sliding of the sliding plate 310 along a straight line on the mounting base 1, its direction of movement is in the same direction as the length direction of the PCB board 5 arranged above the groove 110. A rotating plate 320 is rotatably provided on the side of the sliding plate 310 adjacent to the groove 110. The axis of rotation of the rotating plate 320 around the sliding plate 310 is perpendicular to the direction of movement of the sliding plate 310. The push block 2 is provided on the rotating plate 320. The workflow is as follows: Position the two ends of the PCB board 5 within the two limiting grooves 120, while the area on the PCB board 5 containing the optical device is positioned within the groove 110. Then, initially align the MT fiber optic head 6 with the lens 510 on the PCB board 5. Next, flip the rotating plate 320 so that the push block 2 is positioned between the MT fiber optic head 6 and the rotating plate 320. Then, move the sliding plate 310 so that the push block 2 abuts against the tail of the MT fiber optic head 6. Continue moving the sliding plate 310 so that the push block 2 pushes the MT fiber optic head 6 to complete the insertion with the lens 510 on the PCB board 5. After the assembly is complete, move the sliding plate 310 in the opposite direction so that the push block 2 moves away from the MT fiber optic head 6. Then, flip the rotating plate 320 in the opposite direction to reset the push block 2. Finally, the assembled module can be removed.

[0028] Example 4 like Figures 1-6 As shown, this embodiment is a further improvement on embodiment 3, as detailed below: The mounting base 1 is provided with a linear guide rail 330. The sliding plate 310 is fixedly connected to the slider in the linear guide rail 330. The sliding plate 310 and the slider in the linear guide rail 330 can be fixedly connected by screws. The moving direction of the sliding plate 310 on the linear guide rail 330 is in the same direction as the length direction of the PCB board 5. By mounting the sliding plate 310 on the slider of the linear guide rail 330, it can be ensured that the sliding plate 310 always moves in a straight line, so as to avoid misalignment between the MT fiber head 6 and the lens 510 on the PCB board 5. Of course, the linear guide rail 330 here is only an exemplary description. In actual application, other methods are not excluded. For example, the mounting base 1 is provided with a dovetail groove, and the lower surface of the sliding plate 310 is provided with a dovetail block. The dovetail block on the lower surface of the sliding plate 310 is located in the dovetail groove on the mounting base 1, realizing the sliding connection between the sliding plate 310 and the mounting base 1. This method can still ensure that the sliding plate 310 always moves in a straight line.

[0029] Example 5 like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, this embodiment is a further improvement on embodiment 3 or 4, as detailed below: An elastic mechanism 340 is provided at one end of the turntable 320 near the groove 110. The push block 2 is located on the elastic mechanism 340 to prevent the push block 2 from using excessive force due to hard contact during the process of pushing the MT fiber optic head 6. Hard contact may cause the lens 510 on the PCB board 5 to loosen or detach. The introduction of the elastic mechanism 340 can achieve soft contact, effectively preventing the lens 510 from loosening or detaching, and ensuring that the MT fiber optic head 6 and the lens 510 are properly installed.

[0030] Furthermore, the elastic mechanism 340 includes two screws 341 and two springs 342. A through hole 321 is opened on each side of the end of the rotating plate 320 along the moving direction of the sliding plate 310. The screw end of each screw 341 passes through a through hole 321 on the rotating plate 320 and is threadedly connected to the push block 2. The outer diameter of the nut of each screw 341 is larger than the inner diameter of the through hole 321, indicating that the nut of the screw 341 cannot pass through the through hole 321. The two springs 342 are respectively fitted onto the two screws 341. The two ends of each spring 342 abut against the push block 2 and the rotating plate 320 respectively. When the push block 2 moves towards the MT fiber optic head 6 and contacts the tail of the MT fiber optic head 6, the spring 342 will compress, thus avoiding hard contact. Continuing to push the push block 2, the spring 342 will continue to compress until it can no longer be compressed. Further pushing of the push block 2 will then push the MT fiber optic head 6 to complete the insertion with the lens 510 on the PCB board 5.

[0031] The rotating plate 320 is preferably made of aluminum alloy, and the sliding plate 310 is preferably made of aluminum alloy. Of course, this is just an example, and other materials may be used in actual application.

[0032] Example 6 like Figures 1-6 As shown, this embodiment is a further improvement on any one of embodiments 1 to 5, as detailed below: The mounting base 1 is preferably made of aluminum alloy, and the push block 2 is preferably made of aluminum alloy. Of course, this is just an example, and other materials may be used in actual application.

[0033] Mounting base 1 is fixed on base 4. The material of base 4 can be stainless steel, such as 304 stainless steel. This is just an example. In actual application, other materials may be used. Mounting base 1 and base 4 can be connected by screws. Of course, in actual application, other connection methods may be used.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A MT fiber head and lens on PCB assembly tool, characterized in that, include: The mounting base (1) and the push block (2) are provided. The upper surface of the mounting base (1) is provided with a groove (110) to avoid the optical device on the PCB board (5). On the upper surface of the mounting base (1), a limiting groove (120) is provided at each of the two ends of the PCB board (5) which is correspondingly positioned above the groove (110) to accommodate its end. The mounting base (1) is provided with an adjustment mechanism (3) that is fixed to the push block (2) and is used to first let the push block (2) abut against the tail of the MT fiber head (6) and then let the push block (2) push the MT fiber head (6) to complete the insertion with the lens (510) on the PCB board (5).

2. The MT fiber optic connector and PCB lens assembly tooling of claim 1, wherein, The push block (2) has a first clearance groove (210) on the side of the MT fiber head (6) that avoids the guide pin (610) in the MT fiber head (6). The first clearance groove (210) penetrates the lower surface of the push block (2). The push block (2) has a second clearance groove (220) on the side of the push block (2) that is connected to the first clearance groove (210) and used to avoid the pigtail (620) in the MT fiber head (6). The second clearance groove (220) penetrates the lower surface of the push block (2).

3. The MT fiber optic head and lens assembly fixture on a PCB board according to claim 2, characterized in that, The distance between the wall of the first clearance groove (210) and the MT fiber head (6) and the tail end of the guide pin (610) in the MT fiber head (6) is 0.4 mm.

4. The MT fiber optic head and lens assembly fixture on a PCB board according to any one of claims 1 to 3, characterized in that, The adjustment mechanism (3) includes: a sliding plate (310), which is located on one side of the groove (110) and is slidably connected to the mounting base (1). During the sliding process of the sliding plate (310) along the straight line on the mounting base (1), its moving direction is in the same direction as the length direction of the PCB board (5). A rotating plate (320) is provided on the side of the sliding plate (310) adjacent to the groove (110). The axis of rotation of the rotating plate (320) around the sliding plate (310) is perpendicular to the moving direction of the sliding plate (310). The push block (2) is provided on the rotating plate (320).

5. The MT fiber optic ferrule and PCB lens assembly tooling of claim 4, wherein, The mounting base (1) is provided with a linear guide rail (330), and the sliding plate (310) is fixedly connected to the slider in the linear guide rail (330). The moving direction of the sliding plate (310) on the linear guide rail (330) is in the same direction as the length direction of the PCB board (5).

6. The MT fiber optic ferrule and PCB lens assembly tool of claim 4, wherein, The rotating plate (320) is provided with an elastic mechanism (340) at one end near the groove (110), and the push block (2) is provided on the elastic mechanism (340).

7. The MT fiber optic ferrule and PCB lens assembly tooling of claim 6, wherein, The elastic mechanism (340) includes two screws (341) and two springs (342). A through hole (321) is opened on each side of the end of the rotating plate (320) along the moving direction of the sliding plate (310). The screw end of each screw (341) passes through a through hole (321) on the rotating plate (320) and is threadedly connected to the push block (2). The outer diameter of the nut of each screw (341) is larger than the inner diameter of the through hole (321). The two springs (342) are respectively sleeved on the two screws (341). The two ends of each spring (342) abut against the push block (2) and the rotating plate (320) respectively.

8. The MT fiber optic head and lens assembly fixture on a PCB board according to claim 4, characterized in that, The rotating plate (320) is made of aluminum alloy, and the sliding plate (310) is made of aluminum alloy.

9. The MT fiber optic head and lens assembly fixture on a PCB board according to claim 1, characterized in that, The mounting base (1) is made of aluminum alloy, and the push block (2) is made of aluminum alloy.

10. The MT fiber optic connector and PCB lens assembly tooling of claim 1, wherein, The mounting base (1) is fixed on the base (4).

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