Optical module testing device

Abstract

The application discloses an optical module testing device, and relates to the technical field of optical module testing.The optical module testing device comprises a machine body, a tray arranged on the machine body, a detection piece arranged above the tray and on the machine body, and a constant force testing chuck.The constant force testing chuck is arranged on a sliding rail arranged on the machine body and is used for exerting a constant clamping force on an optical module body placed on the tray.A pneumatic cylinder is arranged on the machine body and is used for driving the constant force testing chuck to move along the sliding rail so as to adjust the clamping state of the constant force testing chuck on the optical module body.The application adopts a progressive action sequence of light clamping and pushing first and constant force pressing later, decouples the positioning and clamping functions, and enables the optical module to complete electrical performance detection in a zero displacement and zero looseness state, eliminates the over-positioning or under-positioning risk caused by one-time mechanical clamping, and omits the manual adjustment link.

Description

Technical Field

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

[0002] An optical module is a modular component that integrates optical elements (such as lenses, prisms, filters, light sources, etc.) with electronic components (such as image sensors, lasers, etc.). It is widely used in mobile phones, augmented reality (AR) devices, virtual reality (VR) devices and other fields.

[0003] Since optical modules typically have extremely high requirements for image clarity, optical path accuracy, and environmental adaptability, any minor manufacturing error or assembly deviation will directly affect the performance of the final product. Therefore, they must be rigorously tested using professional testing equipment to ensure that they meet the expected optical performance standards in practical applications.

[0004] When existing optical module testing equipment is running continuously on the production line, the clamping force is directly provided by rigid threads or springs. As the number of cycles increases, the contact surface between the clamp and the module wears down, the surface roughness decreases, and the coefficient of friction decreases. The originally set torque or compression amount cannot correspond to the actual clamping force, resulting in loose clamping. There are accumulated tolerances in the packaging thickness and frame height of different batches of modules. Traditional fixed stroke grippers cannot adapt to changes in thickness. Thin parts will have overpressure cracks, and thick parts will have false clamping signal drift. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an optical module testing device that solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an optical module testing device, comprising a body, a tray mounted on the body, and a testing component located above the tray and mounted on the body, further comprising: a constant force testing chuck, the constant force testing chuck being mounted on a slide rail mounted on the body, for applying a constant clamping force to an optical module body placed on the tray; a cylinder, the cylinder being mounted on the body, for driving the constant force testing chuck to move along the slide rail to adjust the clamping state of the constant force testing chuck on the optical module body; and a pre-clamping and delivery testing head, the pre-clamping and delivery testing head being mounted on a mounting base mounted on the body and connected to the cylinder, for pre-clamping the optical module body and pushing it to the testing position before the cylinder drives the constant force testing chuck to apply a constant clamping force to the optical module body, and simultaneously completing initial centering.

[0007] As a preferred embodiment of the present invention, the constant force test clamp includes: a ramp frame, a first slide block that slides on a slide rail is installed on one side of the bottom of the ramp frame, and a constant force clamping seat for abutting the optical module body is provided at the top of the ramp frame; and a constant force mechanism, a second slide block that slides on a slide rail is installed at the bottom of the constant force mechanism, a first L-shaped frame is installed at the bottom of the second slide block, and a sliding roller is fixedly connected to the free end of the first L-shaped frame.

[0008] As a preferred embodiment of the present invention, the constant force mechanism includes: a guide frame, a first counterweight, and a second counterweight; the guide frame is slidably mounted on the ramp frame, and the cavity of the guide frame is hollow; the first counterweight is located directly above the second counterweight, and the first and second counterweights slide within the hollow cavity of the guide frame; the bottom of the second counterweight is provided with a roller that abuts against the ramp of the ramp frame, and a stop block is installed at the bottom of the ramp frame; protrusions are fixedly connected to both sides of the first counterweight, and the protrusions are slidably connected to a limiting groove opened on the upper side of the guide frame to limit the stroke of the first counterweight.

[0009] As a preferred embodiment of the present invention, two limiting rods are symmetrically fixed on the slide rail, and a driving disk is slidably disposed on the limiting rods; the driving disk is symmetrically provided with arc-shaped grooves that are slidably connected to the limiting rods, and the driving disk is provided with inclined grooves that are slidably connected to the sliding rollers; a convex ball is fixed to the inner wall of the through hole opened at the center of the driving disk.

[0010] As a preferred embodiment of the present invention, a drive rod is fixed to the top of the piston rod of the cylinder, and a vertical groove and a spiral groove are respectively opened on the drive rod, which are connected to each other; the vertical groove and the spiral groove are adapted to abut against the convex ball to convert linear motion into rotational motion and drive the constant force test clamp to move.

[0011] As a preferred embodiment of the present invention, a cross-shaped groove is provided in the cavity of the mounting base, and a limit block is fixed on the groove located at the center of the mounting base; four guide rods are arranged in an array on the mounting base, and a first spring is slidably sleeved on the guide rods to provide the pre-clamping probe reset force.

[0012] As a preferred embodiment of the present invention, the pre-clamping test head includes: a lifting frame, which is slidably sleeved on the mounting base, and through holes that are slidably connected to guide rods are provided at the four corners of the lifting frame; the lifting frame abuts against the bottom end of the first spring; a connecting frame, which is fixed at the four corners of the lifting frame, and a limit mechanism is provided on the lifting frame; and a pre-clamping mechanism, which is connected to the connecting frame and is used to pre-clamp and initially center the optical module body.

[0013] As a preferred embodiment of the present invention, the pre-clamping mechanism includes: a lever, two-thirds of which is rotatably mounted on a rotating frame on the machine body; a first guide groove and a second guide groove are provided on the lever located on both sides of the rotating frame; the second guide groove abuts against a shaft head fixed on the connecting frame; and a push seat, which slides on the tray; a second L-shaped frame is mounted on the bottom of the push seat; one end of the second L-shaped frame abuts against the first guide groove through a shaft head, for converting the lifting motion into a horizontal pushing motion.

[0014] As a preferred embodiment of the present invention, the limiting mechanism includes: a limiting inclined block, which is slidably inserted into the lifting frame, with the inclined surface of the limiting inclined block facing upward, and a second spring provided at one end of the limiting inclined block away from the inclined surface; and a sealing plate, which abuts against the other end of the second spring, and is installed on the lifting frame to provide a restoring force for the limiting inclined block.

[0015] As a preferred embodiment of the present invention, a top contact plate is fixed to the top of the drive rod, and four top contact rods are fixedly connected to the top contact plate in a circular array; the width of the top contact rod is smaller than the width of the limiting inclined block, the width of the limiting inclined block is larger than the distance between the two limiting blocks, and the width of the top contact rod can freely pass through the distance between the two limiting blocks.

[0016] Compared with the prior art, the present invention provides an optical module testing device, which has the following advantages:

[0017] 1. This optical module testing device decouples the positioning and clamping functions by adopting a progressive action sequence of first gently pushing and then pressing with constant force. This allows the optical module to complete electrical performance testing in a state of zero displacement and zero looseness, eliminating the risk of over-positioning or under-positioning caused by one-time mechanical clamping, saving the manual adjustment step, and significantly improving the clamping repeatability and electrical parameter testing consistency.

[0018] 2. This optical module testing device utilizes a self-weight inclined plane coupling structure to convert vertical gravity into a constant horizontal clamping force. The clamping force is not affected by the dimensional tolerances of the optical module body or friction and wear, and remains constant over a long period of time. This overcomes the testing errors caused by traditional mechanical locking, such as "signal drift when loose and device deformation when tight," thus extending the life of the constant force mechanism and improving the reliability and stability of electrical performance testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention after the upper part has been removed;

[0021] Figure 3This is a schematic diagram of the structure of the present invention after the entire body has been removed;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure viewed from below in this position;

[0023] Figure 5 This is a schematic diagram of the constant force testing clamp and mounting base of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the constant force testing clamp of the present invention;

[0025] Figure 7 This is a schematic diagram of the constant force testing clamp and slide rail of the present invention;

[0026] Figure 8 This is a schematic diagram of the constant force mechanism of the present invention;

[0027] Figure 9 for Figure 8 A schematic diagram of the structure decomposed under the state;

[0028] Figure 10 for Figure 8 A schematic diagram of the structure viewed in cross-section under the current conditions;

[0029] Figure 11 This is a schematic diagram of the slide rail and drive disk of the present invention;

[0030] Figure 12 This is a schematic diagram of the drive disk of the present invention;

[0031] Figure 13 This is a schematic diagram of the cylinder structure of the present invention;

[0032] Figure 14 This is a schematic diagram of the pre-clamping probe of the present invention;

[0033] Figure 15 This is a partial structural schematic diagram of the pre-clamping probe of the present invention;

[0034] Figure 16 This is a schematic diagram of the structure of the mounting base of the present invention;

[0035] Figure 17 This is a schematic diagram of the lifting frame of the present invention;

[0036] Figure 18 This is a schematic diagram of the limiting mechanism of the present invention;

[0037] Figure 19 This is a schematic diagram of the pre-clamping mechanism of the present invention.

[0038] In the diagram: 1. Machine body; 2. Tray; 3. Detector; 4. Optical module body; 5. Slide rail; 6. First slide block; 7. Inclined frame; 8. Constant force clamping seat; 9. Guide frame; 10. Second slide block; 11. First L-shaped frame; 12. Sliding roller; 13. Limiting groove; 14. First counterweight; 15. Protrusion; 16. Second counterweight; 17. Roller; 18. Drive plate; 19. Arc groove; 20. Inclined groove; 21. Convex ball; 22. Cylinder; 23. Drive rod; 24. Vertical groove; 25. Spiral groove; 26. Top contact plate; 27. Top contact rod; 28. Limiting rod; 29. ​​Mounting base; 30. Slide groove; 31. Limiting block; 32. Guide rod; 33. First spring; 34. Lifting frame; 35. Connecting frame; 36. Sealing plate; 37. Limiting inclined block; 38. Second spring; 39. Lever; 40. Rotating frame; 41. First guide groove; 42. Second guide groove; 43. Second L-shaped frame; 44. Pushing base; 45. Stop block. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] See Figures 1 to 13 The present invention discloses an optical module testing device, including a body 1, a tray 2 disposed on the body 1, and a detection component 3 disposed on the body 1 above the tray 2. It also includes a cylinder 22 and a pre-clamping test head.

[0041] See Figures 2 to 7 The constant force test chuck is mounted on the slide rail 5 on the machine body 1 and is used to apply a constant clamping force to the optical module body 4 placed on the tray 2. The cylinder 22 is mounted on the machine body 1 and is used to drive the constant force test chuck to move along the slide rail 5 to adjust the clamping state of the constant force test chuck on the optical module body 4. The pre-clamping test head is mounted on the mounting base 29 on the machine body 1 and is connected to the cylinder 22. Before the cylinder 22 drives the constant force test chuck to apply a constant clamping force to the optical module body 4, the pre-clamping test head is used to push the optical module body 4 to the test position and simultaneously complete the initial centering.

[0042] See Figures 3 to 7In this embodiment, the tray 2 is used to support the optical module body 4, and the test piece 3 is located above the tray 2 and remains stationary. The cylinder 22 first pushes the pre-clamping test head, so that the pre-clamping test head slides smoothly on the mounting base 29. The pre-clamping test head applies a light clamping force to the optical module body 4 and pushes the optical module body 4 to the test position in the horizontal direction. After the pushing action is completed, the initial centering of the optical module body 4 is completed, the pre-clamping test head is reset, and it is released from clamping the optical module body 4.

[0043] See Figures 3 to 7 Subsequently, cylinder 22 extends further, driving the constant force test chuck to slide along slide rail 5. The constant force test chuck applies a constant clamping force to the optical module body 4. During the clamping process, the constant force test chuck and slide rail 5 maintain linear movement, and the clamping force remains constant until the clamping action is completed. At this time, the optical module body 4 is in the test position and is constantly clamped. The detection component 3 detects the optical module body 4. During the detection process, cylinder 22 remains extended, and the constant force test chuck continuously applies a constant clamping force to ensure that the optical module body 4 does not loosen or shift during the detection process. After the detection is completed, cylinder 22 retracts, the constant force test chuck releases first, the pre-clamped probe is then released and reset, and the optical module body 4 is released from clamping and can be easily removed. This scheme avoids locking the clamping force in a narrow range using purely mechanical means, avoiding the dilemma of "inaccurate measurement when too loose, and distorted measurement when too tight".

[0044] See Figures 1 to 10 The aforementioned constant force test clamp includes an inclined frame 7 and a constant force mechanism.

[0045] See Figures 8 to 10 The aforementioned ramp frame 7 has a first slide block 6 that slides on the slide rail 5 installed on one side of its bottom. The ramp frame 7 has a constant force clamping seat 8 at the top of the ramp for abutting against the optical module body 4. The constant force mechanism has a second slide block 10 that slides on the slide rail 5 installed at its bottom. The bottom of the second slide block 10 has a first L-shaped frame 11 installed. The free end of the first L-shaped frame 11 is fixed with a sliding roller 12.

[0046] See Figures 8 to 10 In addition, the constant force mechanism includes a guide frame 9, a first counterweight 14, and a second counterweight 16. The guide frame 9 is slidably mounted on the ramp frame 7. The cavity of the guide frame 9 is hollow. The first counterweight 14 is located directly above the second counterweight 16. The two slide in the hollow cavity of the guide frame 9. The bottom of the second counterweight 16 is provided with a roller 17 that abuts against the ramp of the ramp frame 7. The two sides of the first counterweight 14 are fixedly connected with protrusions 15. The protrusions 15 are slidably connected to the limiting grooves 13 opened on the upper side of the guide frame 9 to limit the stroke of the first counterweight 14.

[0047] See Figures 8 to 10In this embodiment, the ramp frame 7 slides linearly along the slide rail 5 with the aid of the first slide block 6. The constant force clamping seat 8 at the top of the ramp abuts against the surface of the optical module body 4. The guide frame 9 is sleeved on the ramp frame 7 and can slide relative to it. The first counterweight 14 and the second counterweight 16 move up and down in the hollow cavity of the guide frame 9. The roller 17 at the bottom of the second counterweight 16 continuously abuts against the ramp surface of the ramp frame 7. The counterweight gravity is converted into a constant clamping force by means of the change of ramp angle.

[0048] Furthermore, the protrusions 15 on both sides of the first counterweight 14 slide along the limiting groove 13 to ensure that the stroke of the first counterweight 14 is controlled, so that the clamping force of the constant force clamping seat 8 on the optical module body 4 is constant and the direction is stable until the clamping action is completed.

[0049] See Figures 1 to 10 In use, the guide frame 9 moves laterally along the slide rail 5 under the drive of the cylinder 22. Its bottom is supported and slides through the second slide block 10. The direction of movement is limited by the slide rail 5. The friction force comes only from the contact surface between the second slide block 10 and the slide rail 5. The overall resistance is less than the thrust of the roller 17 rising along the slope of the ramp frame 7. In the initial stage, the roller 17 is located at the bottom of the ramp frame 7. When the guide frame 9 moves forward, due to the self-weight of the second counterweight block 16, the roller 17 is forced to roll towards the top of the slope. The combined constraint of the second slide block 10 and the first slide block 6 causes the entire ramp frame 7 to move forward with the guide frame 9 until the constant force clamping seat 8 abuts against the optical module body 4. At the moment of contact, the resistance of the ramp frame 7 increases, and the roller 17 begins to roll and rise along the slope. The two counterweights 16 are lifted within the guide frame 9 at a fixed height. When the second counterweight 16 rises below the first counterweight 14 and lifts it up, the first counterweight 14 and the second counterweight 16 overlap and continuously apply force to the ramp frame 7 through the roller 17, so that the contact force between the constant force clamping seat 8 and the optical module body 4 remains constant in the later stage, thus achieving constant force clamping. When the guide frame 9 is reset, the protrusion 15 slides down along the limiting groove 13, the first counterweight 14 returns to the center of the guide frame 9, and the roller 17 returns to the bottom of the ramp frame 7 under the action of the weight of the second counterweight 16. A stop block 45 is installed at the bottom of the ramp frame 7. The stop block 45 at the bottom of the ramp frame 7 prevents the guide frame 9 from moving too far backward, ensuring that the ramp frame 7 can still move as a whole when reset.

[0050] See Figure 11 and Figure 12 Two limiting rods 28 are symmetrically fixed on the slide rail 5. A drive disk 18 is slidably arranged on the limiting rods 28. Arc grooves 19 that are slidably connected to the limiting rods 28 are symmetrically opened on the drive disk 18. Inclined grooves 20 are opened on the drive disk 18. Inclined grooves 20 are slidably connected to the slide roller 12. A convex ball 21 is fixed on the inner wall of the through hole opened at the center of the drive disk 18.

[0051] See Figure 13A drive rod 23 is fixed to the top of the piston rod of the cylinder 22. A vertical groove 24 and a spiral groove 25 are respectively opened on the drive rod 23. The vertical groove 24 and the spiral groove 25 are connected and are adapted to abut against the convex ball 21 to convert linear motion into rotational motion and drive the constant force test clamp to move.

[0052] In this embodiment, the arc-shaped groove 19 cooperates with the limiting rod 28 to restrict the rotational freedom of the drive disk 18; the inclined groove 20 slides against the sliding roller 12, converting the rotational motion of the drive disk 18 into the linear feed of the constant force test chuck along the slide rail 5, ensuring that the clamping direction of the constant force clamping seat 8 on the optical module body 4 is constant. When the cylinder 22 extends, the vertical groove 24 and the spiral groove 25 of the drive rod 23 continuously abut against the convex ball 21. The groove shape, first straight and then spiral, converts the linear thrust of the cylinder 22 into a fixed-angle rotation of the drive disk 18. At the start of the rotation, the convex ball 21 falls into the vertical groove 24. At this time, the cylinder 22 rises, the drive disk 18 remains stationary, and the rotation angle is determined by the lift of the spiral groove 25. Throughout the process, the limiting rod 28 always supports the drive disk 18 to avoid rotational sway and ensure smooth conversion motion.

[0053] See Figures 14 to 16 As a preferred technical solution of the present invention, a cross-shaped sliding groove 30 is provided in the cavity of the mounting base 29, and a limit block 31 is fixed on the sliding groove 30 located at the center of the mounting base 29. Four guide rods 32 are arranged in an array on the mounting base 29, and a first spring 33 is slidably sleeved on the guide rods 32 to provide the pre-clamping probe reset force.

[0054] In this embodiment, the cross-shaped groove 30 inside the cavity of the mounting base 29 remains fixed, and the limiting block 31 is located at the center and abuts against the intersection of the groove 30 to prevent excessive slippage; four guide rods 32 are arranged in an array on the mounting base 29, and the first spring 33 is sleeved on the outer periphery of the guide rods 32. When the pre-clamping probe is lifted by the cylinder 22, the first spring 33 is compressed and stores reset potential energy. When the pre-clamping probe is reset, the first spring 33 releases the potential energy to push the pre-clamping probe back smoothly along the guide rods 32. The cross-shaped groove 30 and the guide rods 32 together define the fall path, making the reset action accurate and the repeat position consistent.

[0055] See Figures 14 to 19 As a preferred technical solution of the present invention, the pre-clamping test head includes a lifting frame 34, a connecting frame 35, and a pre-clamping mechanism. The lifting frame 34 is slidably sleeved on the mounting base 29. Through holes that are slidably connected to the guide rod 32 are opened at the four corners of the lifting frame 34. The lifting frame 34 abuts against the bottom end of the first spring 33. The connecting frame 35 is fixed at the four corners of the lifting frame 34. A limit mechanism is provided on the lifting frame 34. The pre-clamping mechanism is connected to the connecting frame 35 and is used to pre-clamp and initially center the optical module body 4.

[0056] The aforementioned pre-clamping mechanism includes a lever 39 and a push seat 44. Two-thirds of the lever 39 rotates on a rotating frame 40 mounted on the machine body 1. A first guide groove 41 and a second guide groove 42 are provided on the lever 39 located on both sides of the rotating frame 40. The second guide groove 42 abuts against the shaft head fixed on the connecting frame 35. The push seat 44 slides on the tray 2. A second L-shaped frame 43 is installed at the bottom of the push seat 44. One end of the second L-shaped frame 43 abuts against the first guide groove 41 through the shaft head, which is used to convert the lifting motion into a horizontal pushing motion.

[0057] The aforementioned limiting mechanism includes a limiting inclined block 37 and a sealing plate 36. The limiting inclined block 37 is slidably inserted into the lifting frame 34, with the inclined surface of the limiting inclined block 37 facing upward. A second spring 38 is provided at one end of the limiting inclined block 37 away from the inclined surface. The sealing plate 36 abuts against the other end of the second spring 38. The sealing plate 36 is installed on the lifting frame 34 to provide the limiting inclined block 37 with a restoring force.

[0058] See Figures 15 to 19 In this embodiment, the top of the mounting base 29 is mounted on the machine body 1, and the lifting frame 34 slides vertically along the mounting base 29. The four corner through holes cooperate with the guide rod 32 to ensure that the lifting is not tilted. The connecting frame 35 is fixed to the four corners of the lifting frame 34 and rises and falls synchronously with it. The lever 39 uses the rotating frame 40 as the fulcrum, and the second guide groove 42 abuts against the shaft end of the connecting frame 35, converting the vertical displacement of the lifting frame 34 into lever swing. The first guide groove 41 then pushes the second L-shaped frame 43, causing the pushing seat 44 to slide horizontally along the tray 2, completing the continuous movement of lifting-swinging-pushing, realizing pre-clamping and initial centering. The limiting inclined block 37 is on the second spring. Under the action of cylinder 22, the lifting frame 34 remains extended with its inclined surface facing upward. When the lifting frame 34 is pushed by cylinder 22 to the limiting block 31 at the center of the mounting base 29, the inclined surface of the limiting block 37 abuts against the side wall of the limiting block 31, causing the limiting block 37 to move towards the second spring 38 and compress the second spring 38. At this time, the lifting frame 34 is disengaged from the synchronous lifting of cylinder 22, and the lifting frame 34 is reset. The sealing plate 36 supports the end of the second spring 38 to prevent the spring from becoming unstable. When the lifting frame 34 falls back, the second spring 38 is released, the limiting block 37 automatically resets, and the entire pre-clamping probe returns to its original position, waiting for the next action.

[0059] See Figures 13 to 16 As a preferred technical solution of the present invention, a top contact plate 26 is fixed to the top of the drive rod 23, and four top contact rods 27 are fixedly connected to the top contact plate 26 in a ring array. The width of the top contact rods 27 is smaller than the width of the limiting inclined block 37, the width of the limiting inclined block 37 is larger than the distance between the two limiting blocks 31, and the width of the top contact rods 27 can freely pass through the distance between the two limiting blocks 31.

[0060] See Figures 13 to 16In this embodiment, the top contact plate 26 is fixed to the top of the drive rod 23 and rises and falls synchronously with the drive rod 23; four top contact rods 27 are arranged in a ring on the top contact plate 26, and their width is smaller than the width of the limiting inclined block 37, ensuring that the top contact rods 27 can freely pass through the distance between the two limiting blocks 31; when the top contact rods 27 rise, due to the limiting effect of the limiting inclined block 37, the top contact rods 27 are below the inclined surface of the limiting inclined block 37, driving the limiting inclined block 37 and the lifting frame 34 to rise. When the lifting reaches the limiting block 31, due to the limiting inclined block 37 The width is greater than the gap between the two limiting blocks 31. At this time, the limiting block 31 will abut against the inclined surface of the limiting inclined block 37, pushing the limiting inclined block 37 to slide laterally and compress the second spring 38 until the limiting inclined block 37 is completely retracted into the lifting frame 34. At this time, the lifting frame 34 is unlocked and falls to reset, so that the push seat 44 is reset. The size of the push seat 44 is greater than the size of the constant force clamping seat 8, so as to avoid the optical module body 4 being outside the clamping range of the four constant force clamping seats 8 when it is placed on the tray 2, which would affect the centering clamping of the optical module body 4 by the constant force clamping seats 8.

[0061] In addition, the size of the constant force clamping base 8 can be designed to be large to avoid the problem of the optical module body 4 falling outside the clamping and pushing range. However, when multiple large constant force clamping bases 8 are clamped in the center, the minimum enclosed area is large, which is not suitable for smaller optical module bodies 4.

[0062] In use, the piston rod of cylinder 22 extends, and the drive rod 23 first engages with the convex ball 21 through the vertical groove 24 to make the drive disc 18 stationary. The top contact rod 27 rises synchronously and presses against the inclined surface of the limiting block 37. The lifting frame 34 moves upward along the guide rod 32, the first spring 33 is compressed, and the lever 39 swings and pushes the push seat 44 forward through the second L-shaped frame 43, lightly clamping and initially centering the optical module body 4 to the test position. The lifting frame 34 rises to the limiting block 31, the limiting block 37 is squeezed back, the lifting frame 34 is unlocked, and the first spring... Spring 33 releases energy and falls back, pushing seat 44 to reset and disengage from optical module body 4; then the spiral groove 25 of drive rod 23 engages with convex ball 21, drive disk 18 rotates, inclined groove 20 moves sliding roller 12, guide frame 9 moves forward via second sliding seat 10, roller 17 climbs up inclined frame 7, second counterweight 16 lifts first counterweight 14, superimposed gravity is constantly pressed against optical module body 4 by constant force clamping seat 8; after the detection component 3 completes the detection, cylinder 22 retracts, each component resets in sequence, and optical module body 4 can be taken out.

[0063] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An optical module testing device, comprising a body (1), a tray (2) disposed on the body (1), and a testing component (3) located above the tray (2) and disposed on the body (1), characterized in that, Also includes: A constant force test chuck is set on a slide rail (5) mounted on the machine body (1) and is used to apply a constant clamping force to the optical module body (4) placed on the tray (2). A cylinder (22), mounted on the machine body (1), is used to drive the constant force test chuck to move along the slide rail (5) to adjust the clamping state of the constant force test chuck on the optical module body (4); and The pre-clamping test head is mounted on the mounting base (29) on the machine body (1) and connected to the cylinder (22). It is used to pre-clamp the optical module body (4) and push it to the test position before the cylinder (22) drives the constant force test chuck to apply a constant clamping force to the optical module body (4), and simultaneously complete the initial centering. The constant force test clamp includes: A ramp frame (7), with a first slide block (6) sliding on a slide rail (5) mounted on one side of its bottom, and a constant force clamping seat (8) for abutting the optical module body (4) at the top of the ramp frame (7); and A constant force mechanism, wherein a second slide block (10) is installed at the bottom of the constant force mechanism and slides on the slide rail (5), and a first L-shaped frame (11) is installed at the bottom of the second slide block (10), and a slide roller (12) is fixedly connected to the free end of the first L-shaped frame (11). The constant force mechanism includes: a guide frame (9), a first counterweight (14), and a second counterweight (16). The guide frame (9) is slidably mounted on the ramp frame (7), and the cavity of the guide frame (9) is hollow; the first counterweight (14) is located directly above the second counterweight (16), and the first counterweight (14) and the second counterweight (16) slide in the hollow cavity of the guide frame (9). The bottom of the second counterweight (16) is provided with a roller (17) that abuts against the ramp of the ramp frame (7), and a stop block (45) is installed at the bottom of the ramp frame (7). The first counterweight (14) has protrusions (15) fixed on both sides. The protrusions (15) are slidably connected to the limiting groove (13) opened on the upper side of the guide frame (9) to limit the stroke of the first counterweight (14).

2. The optical module testing device according to claim 1, characterized in that: Two limiting rods (28) are symmetrically fixed on the slide rail (5), and a drive disk (18) is slidably arranged on the limiting rods (28). The drive disk (18) is symmetrically provided with arc-shaped grooves (19) that are slidably connected to the limiting rod (28). The drive disk (18) is provided with inclined grooves (20), which are slidably connected to the sliding roller (12). A convex ball (21) is fixed on the inner wall of the through hole opened at the center of the drive disk (18).

3. The optical module testing device according to claim 2, characterized in that: The piston rod of the cylinder (22) is fixed with a drive rod (23), and the drive rod (23) is provided with a vertical groove (24) and a spiral groove (25), which are connected to each other. The vertical groove (24) and the spiral groove (25) are adapted to abut against the convex ball (21) to convert linear motion into rotational motion and drive the constant force test clamp to move.

4. The optical module testing device according to claim 3, characterized in that: The cavity of the mounting base (29) is provided with a cross-shaped slide groove (30), and a limit block (31) is fixed on the slide groove (30) located at the center of the mounting base (29). The mounting base (29) is provided with four guide rods (32) arranged in an array. A first spring (33) is slidably sleeved on the guide rods (32) to provide the pre-clamping probe reset force.

5. The optical module testing device according to claim 4, characterized in that: The pre-clamping test head includes: The lifting frame (34) is slidably sleeved on the mounting base (29). The four corners of the lifting frame (34) are provided with through holes that are slidably connected to the guide rod (32). The lifting frame (34) abuts against the bottom end of the first spring (33). A connecting frame (35) is fixed at the four corners of the lifting frame (34), and a limit mechanism is provided on the lifting frame (34); and The pre-clamping mechanism is connected to the connecting frame (35) and is used to pre-clamp and initially center the optical module body (4).

6. The optical module testing device according to claim 5, characterized in that: The pre-clamping mechanism includes: A lever (39) is rotated at two-thirds of its length on a rotating frame (40) mounted on the machine body (1). A first guide groove (41) and a second guide groove (42) are provided on the lever (39) located on both sides of the rotating frame (40). The second guide groove (42) abuts against a shaft fixed on the connecting frame (35). Push seat (44), which slides on tray (2), and a second L-shaped frame (43) is installed at the bottom of the push seat (44). One end of the second L-shaped frame (43) abuts against the first guide groove (41) through a shaft head, which is used to convert the lifting motion into a horizontal pushing motion.

7. The optical module testing device according to claim 5, characterized in that: The limiting mechanism includes: A limiting inclined block (37) is slidably inserted into the lifting frame (34), the inclined surface of the limiting inclined block (37) is set upward, and a second spring (38) is provided at the end of the limiting inclined block (37) away from the inclined surface; and A sealing plate (36) abuts against the other end of a second spring (38). The sealing plate (36) is mounted on a lifting frame (34) to provide the restoring force of the limiting inclined block (37).

8. The optical module testing device according to claim 7, characterized in that: The top of the drive rod (23) is fixed with a top contact plate (26), and four top contact rods (27) are fixedly connected in a ring array on the top contact plate (26). The width of the top contact rod (27) is less than the width of the limiting inclined block (37), the width of the limiting inclined block (37) is greater than the distance between the two limiting blocks (31), and the width of the top contact rod (27) can freely pass through the distance between the two limiting blocks (31).

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