A lens coupling device and coupling method

Abstract

The application provides a lens coupling device and a coupling method. The lens coupling device comprises a stage, a distance measuring sensor, a multi-degree-of-freedom adjusting mechanism and a control unit. The stage is provided with a PCB clamp configured to fix a PCB. The distance measuring sensor is configured to collect distance data of three measuring points of the PCB and transmit the data to the control unit, so that the control unit calculates the pitch angle and roll angle of the PCB according to the distance data of the three measuring points. The multi-degree-of-freedom adjusting mechanism is provided with a lens clamp. The multi-degree-of-freedom adjusting mechanism is configured to drive the lens clamp mounted thereon to move in multiple translation directions and rotation directions. The control unit is configured to control the rotation shaft of the multi-degree-of-freedom adjusting mechanism to perform a compensation rotation according to the pitch angle and roll angle of the PCB, so that the reference surface of the lens clamp or the lens on the multi-degree-of-freedom adjusting mechanism is parallel to the reference surface of the PCB.

Description

Technical Field

[0001] This invention belongs to the field of optical communication technology, specifically relating to a lens coupling device and coupling method. Background Technology

[0002] In the lens coupling device disclosed in the related technology, the PCB board is clamped on the stage. If the PCB board has a pitch / tilt deviation due to clamping error, such as a pitch angle of 0.2°, the 0.2° pitch angle will cause the optical axis of the lens to be offset from the optical axis of the optical device on the PCB board. This offset is 7 times the diameter of the light spot. The light spot will be completely deviated from the port of the optical device, resulting in a significant reduction in coupling efficiency, or even coupling failure. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect in the prior art and to provide a lens coupling device and coupling method.

[0004] The technical solution of this invention is implemented as follows: This invention provides a lens coupling device, comprising:

[0005] A stage, on which a PCB clamp is mounted, the PCB clamp being configured to fix a PCB board;

[0006] A ranging sensor is configured to collect distance data from three measuring points on a PCB board and transmit it to a control unit, so that the control unit can calculate the pitch angle and roll angle of the PCB board based on the distance data from the three measuring points.

[0007] A multi-degree-of-freedom adjustment mechanism is provided, on which a lens clamp is mounted. The lens clamp is configured to fix a lens. The multi-degree-of-freedom adjustment mechanism is electrically connected to a control unit. The multi-degree-of-freedom adjustment mechanism is configured to drive the lens clamp mounted thereon to move along multiple translational and rotational directions.

[0008] The control unit is configured to control the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform rotational movements to compensate for the pitch and roll angles based on the pitch and roll angles of the PCB board.

[0009] In some embodiments, the ranging sensor is configured to acquire distance data from three measuring points on the side of the PCB board.

[0010] In some embodiments, the ranging sensor is fixedly mounted on a multi-degree-of-freedom adjustment mechanism;

[0011] or / and,

[0012] There are two multi-degree-of-freedom adjustment mechanisms, which are located on both sides of the loading mechanism.

[0013] In some embodiments, the coupling device of the present invention further includes:

[0014] A power-on module, configured to power the PCB board;

[0015] or / and,

[0016] A dispensing mechanism is configured to dispense adhesive, thereby bonding the first lens and the second lens onto the PCB board.

[0017] or / and,

[0018] A curing mechanism configured to automatically cure adhesive;

[0019] or / and,

[0020] A vision mechanism configured to acquire images of at least the upper region of the loading mechanism and transmit the images to a control unit.

[0021] In some embodiments, the dispensing mechanism, the curing mechanism, and the control unit are electrically connected.

[0022] In some embodiments, the dispensing mechanism is fixedly mounted on a multi-degree-of-freedom adjustment mechanism;

[0023] or / and,

[0024] The curing mechanism is fixedly mounted on the multi-degree-of-freedom adjustment mechanism;

[0025] or / and,

[0026] The vision mechanism includes:

[0027] A first vision module is used to acquire images of the loading mechanism area from a top-down perspective.

[0028] or / and,

[0029] The second vision module is used to acquire images of the side view of the loading mechanism area;

[0030] or / and,

[0031] The third vision module is used to acquire images of the loading mechanism area from an upward perspective.

[0032] The optical axis of the first vision module is perpendicular to the surface of the stage. The optical axis of the second vision module is tilted downwards and points towards the surface of the stage, and the optical axis of the second vision module forms an acute angle with the surface of the stage. The optical axis of the third vision module is perpendicular to the bottom surface of the stage.

[0033] In some embodiments, the first vision module is mounted on a first camera mounting plate, which is mounted on a multi-degree-of-freedom adjustment mechanism.

[0034] In some embodiments, the first vision module is mounted on a first camera mounting plate, which is mounted on an adapter plate of a multi-degree-of-freedom adjustment mechanism.

[0035] In some embodiments, the second vision module is mounted on a second camera mounting plate, which is mounted on a vision motion adjustment mechanism.

[0036] In some embodiments, the third vision module is fixedly mounted on the material stage. The optical axis of the third vision module is located between the stage and the tray base.

[0037] In some embodiments, the power-on module includes a power-on device fixed to a power-on fixture, the power-on fixture fixed to a power-on movement adjustment mechanism, and the power-on movement adjustment mechanism configured to at least drive the power-on device to translate along a first axis, the first axis being parallel to the PCB length direction.

[0038] In some embodiments, the curing mechanism includes a UV lamp, which is fixed to a UV fixture. The UV fixture is fixedly mounted on a UV mounting frame, which is fixedly mounted on a multi-degree-of-freedom adjustment mechanism. The UV mounting frame is fixedly mounted on a clamp mounting base. The clamp mounting base is fixed to the multi-degree-of-freedom adjustment mechanism.

[0039] In some embodiments, the UV lamp is electrically connected to the control unit.

[0040] In some embodiments, the dispensing mechanism includes a dispensing assembly (including a dispensing needle), the dispensing assembly is fixed to a dispensing mounting bracket, and the dispensing mounting bracket is fixedly mounted on a multi-degree-of-freedom adjustment mechanism.

[0041] In some embodiments, the multi-degree-of-freedom adjustment mechanism includes an XYZ three-axis translation module and three rotation axes (θX, θY, θZ). The rotation axis assembly (including the three rotation axes θX, θY, θZ) is fixedly mounted on an adapter plate (L-shaped adapter plate), which is fixedly mounted on the XYZ three-axis translation module. The dispensing mounting bracket is fixedly mounted on the adapter plate of the multi-degree-of-freedom adjustment mechanism.

[0042] In some embodiments, the dispensing assembly (including a dispensing needle) is electrically connected to the control unit.

[0043] In some embodiments, the ranging sensor is fixedly mounted on a multi-degree-of-freedom adjustment mechanism.

[0044] In some embodiments, the ranging sensor is fixed to a sensor mounting plate, which is fixed to a multi-degree-of-freedom adjustment mechanism.

[0045] In some embodiments, the sensor mounting plate is fixed to the adapter plate of the multi-degree-of-freedom adjustment mechanism.

[0046] In some embodiments, the lens fixture includes a suction nozzle and a fixture mounting plate. An elastic element fixing plate and a slide rail slider assembly extending in a vertical direction are fixed on the fixture mounting plate. A slider adapter plate is fixed on the slide rail slider assembly. An elastic element is provided between the slider adapter plate and the elastic element fixing plate. A suction nozzle mounting plate is fixed on the slider adapter plate, and the suction nozzle is fixed on the suction nozzle mounting plate.

[0047] In some embodiments, the lens clamp mounting plate is fixedly connected to the clamp mounting base.

[0048] In some embodiments, a displacement sensor is fixed to the fixture mounting plate. The displacement sensor is arranged vertically. A sensing element is fixed to the slider adapter plate. The sensing element is located at the lower end of the displacement sensor.

[0049] The elastic element is a spring, and a spring limiting element is fixed on the elastic element fixing plate. The spring is sleeved on the spring limiting element, with one end of the spring abutting against the spring limiting element or the elastic element fixing plate, and the other end of the spring connecting or abutting against the slider adapter plate. A positioning groove is provided on the slider adapter plate for the spring to extend into.

[0050] In some embodiments, the PCB fixture includes a PCB fixture base, the PCB fixture base having a groove for mounting a PCB board, a PCB push block being provided on one side of the groove, and a limit block being detachably fixed on the other side of the groove;

[0051] or / and,

[0052] The stage includes a stage base and a heat dissipation device. A stage mounting seat is fixed on the stage base, and a heat dissipation mounting seat is fixed on the stage mounting seat. A heat dissipation device is fixed inside the heat dissipation mounting seat. A heat-conducting block is provided at the upper end of the heat dissipation device. The PCB fixture base of the PCB fixture is provided with a through hole for the heat-conducting block to pass through.

[0053] or / and,

[0054] The loading mechanism also includes a material platform, on which a material tray base is provided. The material tray base is provided with a support surface for placing the material tray, and a limiting device for clamping the material tray is provided on the material tray base.

[0055] In some embodiments, the limiting device includes a push block and an adjusting screw, and the tray base is provided with a threaded hole for engaging with the adjusting screw, the adjusting screw passing through the threaded hole and abutting against the push block.

[0056] In some embodiments, the push block is provided with a guide post, and the tray base is fixed with a baffle by bolts. The baffle is provided with a strip hole, and the guide post on the push block is located in the strip hole of the baffle and is slidably engaged.

[0057] In some embodiments, the limiting block is fixed to the PCB fixture base by bolts.

[0058] In some embodiments, a heat dissipation drive device is fixed inside the stage mounting base. The output shaft of the heat dissipation drive device is connected to the heat dissipation device. The stage mounting base is provided with a spring mounting hole for mounting a spring. A spring pin is fixed inside the spring mounting hole. The spring is located at the upper end of the spring pin, and the upper end of the spring extends out of the upper end of the spring mounting hole. The heat dissipation device is located at the upper end of the spring. A PCB locking screw, a PCB push block, and a PCB push block bracket are fixed on the heat dissipation mounting base. The PCB push block is located between the PCB locking screw and the PCB push block bracket. The PCB push block and the PCB push block bracket are slidably engaged. The PCB locking screw is threadedly connected to the PCB clamp base and presses against the PCB push block. The PCB clamp base covers the PCB push block and is provided with a through hole for the PCB push block to pass through.

[0059] In some embodiments, the heat dissipation device includes a heat dissipation mounting plate, a water cooling device is fixed on the heat dissipation mounting plate, a cooling fin is fixed on the water cooling device, a heat-conducting block is fixed on the cooling fin, and a second through hole is provided on the PCB fixture base for the heat-conducting block to pass through, the second through hole being located in the groove.

[0060] Both the material platform and the carrying platform are fixed to the base plate of the carrying platform, and the power-on moving adjustment mechanism is fixedly connected to the base of the carrying platform.

[0061] The power-on movement adjustment mechanism is configured to drive the power-on device to move along a first direction, a second direction, and a third direction, wherein the second direction and the third direction are perpendicular to the first direction, and the second direction is perpendicular to the third direction.

[0062] Secondly, the present invention also provides a lens coupling method, comprising the following steps:

[0063] The attitude correction of the lens fixture includes: controlling the distance sensor to collect distance data from three measuring points on the side of the PCB board, calculating the pitch and tilt angles of the PCB board based on the distance data from the three measuring points, and controlling the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform rotational movements to compensate for the pitch and tilt angles based on the pitch and tilt angles of the PCB board.

[0064] After the lens fixture's posture is corrected, the multi-degree-of-freedom adjustment mechanism is controlled to move the picked-up lens to the coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected optical power reaches the specified value.

[0065] Thirdly, the present invention also provides a lens coupling method, comprising the following steps:

[0066] Control the first multi-degree-of-freedom adjustment mechanism and the second multi-degree-of-freedom adjustment mechanism to move to the first material picking position and the second material picking position respectively, and control the first multi-degree-of-freedom adjustment mechanism to pick up the first lens and control the second multi-degree-of-freedom adjustment mechanism to pick up the second lens;

[0067] After the first multi-degree-of-freedom adjustment mechanism picks up the first lens, it controls the first multi-degree-of-freedom adjustment mechanism to move the picked-up first lens to the first adjustment area, acquires the distance data of three measuring points on the side of the PCB board collected by the ranging sensor, calculates the pitch angle and tilt angle of the PCB board based on the distance data of the three measuring points, and controls the rotation axis of the first multi-degree-of-freedom adjustment mechanism to perform a rotation action to compensate for the pitch angle and tilt angle, thus completing the attitude correction of the first lens; at the same time, after the second multi-degree-of-freedom adjustment mechanism picks up the second lens, it controls the second multi-degree-of-freedom adjustment mechanism to move the picked-up second lens to the preset second adjustment area, acquires the image of the second lens collected by the camera, obtains the attitude data of the second lens based on the image of the second lens, and controls the second multi-degree-of-freedom adjustment mechanism to adjust the attitude of the second lens based on the attitude data of the second lens, thus completing the attitude correction of the second lens;

[0068] After the attitude correction of the first lens is completed, the first multi-degree-of-freedom adjustment mechanism is controlled to move the first lens to the first coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected first optical power reaches the specified value. At the same time, after the attitude correction of the second lens is completed, the second multi-degree-of-freedom adjustment mechanism is controlled to move the second lens to the second coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected second optical power reaches the specified value.

[0069] In some embodiments, the lens coupling method of the present invention further includes: controlling the power-on module to power the PCB board, the light source on the PCB board emits light, and when coupling to find light, the light is coupled out through the lens.

[0070] In some embodiments, after the coupling and light-finding process is completed, the following steps are also included:

[0071] The lens is attached to the PCB board by dispensing glue through a controlled dispensing mechanism.

[0072] The adhesive is cured by controlling the curing mechanism, thus completing the lens coupling.

[0073] In some embodiments, the loading mechanism and the multi-degree-of-freedom adjustment mechanism are fixed on the optical platform.

[0074] The present invention has at least the following beneficial effects:

[0075] This invention uses a ranging sensor to detect the actual posture of the PCB board in real time. Based on the detected actual posture of the PCB board, it controls a multi-degree-of-freedom adjustment mechanism to perform compensating rotation, actively counteracting the posture deviation of the PCB board. This ensures that the lens and the reference plane of the PCB board are strictly parallel, solving the coupling accuracy problem caused by posture deviation from the source. This allows the light spot to accurately cover the optical device port, greatly improving the coupling efficiency. Attached Figure Description

[0076] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0077] Figure 1 This is a schematic diagram of the structure of a lens coupling device disclosed in one embodiment of the present invention;

[0078] Figure 2 This is a schematic diagram of the structure of the loading mechanism and the power-on module disclosed in one embodiment of the present invention;

[0079] Figure 3 for Figure 2 Top view;

[0080] Figure 4 This is a schematic diagram of the stage and power-on module disclosed in one embodiment of the present invention;

[0081] Figure 5 This is a partial structural schematic diagram of a stage disclosed in one embodiment of the present invention;

[0082] Figure 6 This is a schematic diagram of the structure of a power-on module disclosed in one embodiment of the present invention;

[0083] Figure 7 This is a schematic diagram of the structure of a first multi-degree-of-freedom adjustment mechanism disclosed in an embodiment of the present invention;

[0084] Figure 8 This is a schematic diagram of the dispensing mechanism and ranging sensor disclosed in one embodiment of the present invention;

[0085] Figure 9 This is a schematic diagram of the structure of a second multi-degree-of-freedom adjustment mechanism disclosed in one embodiment of the present invention;

[0086] Figure 10 This is a schematic diagram of the curing mechanism disclosed in one embodiment of the present invention;

[0087] Figure 11 This is a schematic diagram of the structure of a lens clamp disclosed in one embodiment of the present invention;

[0088] Figure 12 This is a schematic diagram of the installation of the second vision module disclosed in one embodiment of the present invention.

[0089] In the attached diagram, 1 is the stage, 1-1 is the stage base, 1-2 is the stage mounting base, 1-3 is the heat dissipation mounting base, 1-4 is the heat dissipation mounting plate, 1-5 is the water cooling device, 1-6 is the cooling chip, 1-7 is the heat-conducting block, 1-8 is the PCB locking screw, 1-9 is the heat dissipation drive device, 1-10 is the spring pin, 1-11 is the spring, 2 is the PCB clamp, 2-1 is the PCB clamp base, 2-2 is the groove, 2-3 is the PCB push block, 2-4 is the limit block, 3 is the power-on module, 3-1 is the power-on device, 3-2 is the power-on clamp, 3-3 is the power-on movement adjustment mechanism, 4 is the first multi-degree-of-freedom adjustment mechanism, 4-1 is the first adapter plate, 5 is the lens clamp, 5-1 is the clamp mounting plate, 5-2 is the elastic element fixing plate, and 5-3 is the slide rail slider assembly. 5-4 is the slider adapter plate, 5-5 is the spring limiter, 5-6 is the nozzle mounting plate, 5-7 is the nozzle, 5-8 is the displacement sensor, 5-9 is the sensing plate, 6 is the second multi-degree-of-freedom adjustment mechanism, 6-1 is the second adapter plate, 6-2 is the clamp mounting base, 7 is the distance sensor, 8 is the sensor mounting plate, 9 is the dispensing mechanism, 9-1 is the dispensing assembly, 9-2 is the dispensing mounting bracket, 10 is the curing mechanism, 10-1 is the UV lamp, 10-2 is the UV mounting bracket, 11 is the first vision module, 12 is the second vision module, 13 is the vision movement adjustment mechanism, 14 is the third vision module, 15 is the material platform, 16 is the tray base, 17 is the tray pusher, 17-1 is the guide column, 18 is the adjusting screw, 19 is the baffle, 20 is the tray, and 21 is the optical platform. Detailed Implementation

[0090] 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.

[0091] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0092] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" or "several" means two or more.

[0093] See Figures 1 to 12 The present invention provides a lens coupling device, comprising:

[0094] A loading mechanism, comprising a loading platform 1, on which a PCB clamp 2 is mounted, the PCB clamp 2 being configured to fix a PCB board.

[0095] The distance sensor 7 is configured to collect distance data from three measuring points (i.e., three non-collinear measuring points) on the side of the PCB board and transmit it to the control unit so that the control unit can calculate the pitch angle (θx, rotation around the X-axis) and roll angle (θy, rotation around the Y-axis) of the PCB board based on the distance data of the three measuring points.

[0096] A multi-degree-of-freedom adjustment mechanism is provided, on which a lens clamp 5 is mounted. The lens clamp 5 is configured to fix a lens. The multi-degree-of-freedom adjustment mechanism is electrically connected to a control unit. The multi-degree-of-freedom adjustment mechanism is configured to drive the lens clamp 5 mounted thereon to move along multiple translational and rotational directions.

[0097] The control unit is configured to control the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform rotational movements to compensate for the pitch and roll angles based on the pitch and roll angles of the PCB board.

[0098] In some embodiments, controlling the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform a rotational action to compensate for the pitch and roll angles includes: controlling the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform a compensating rotational action equal in magnitude to the pitch and roll angles, so that the lens clamp 5 or the lens on the multi-degree-of-freedom adjustment mechanism is parallel to the PCB board, specifically, making the reference plane of the lens clamp 5 or the lens on the multi-degree-of-freedom adjustment mechanism parallel to the reference plane of the PCB board.

[0099] The reference surface of the lens fixture 5 is the plane on the suction nozzle 5-7 that contacts the lens, and the reference surface of the PCB board is the plane on the PCB board used to place the lens.

[0100] This invention uses a ranging sensor to detect the actual posture of the PCB board in real time. Based on the detected actual posture of the PCB board, it controls a multi-degree-of-freedom adjustment mechanism to perform compensating rotation, actively counteracting the posture deviation of the PCB board. This ensures that the lens and the reference plane of the PCB board are strictly parallel, solving the coupling accuracy problem caused by posture deviation from the source. This allows the light spot to accurately cover the optical device port, greatly improving the coupling efficiency.

[0101] In some embodiments, there are two multi-degree-of-freedom adjustment mechanisms, which are located on both sides of the loading mechanism, namely the first multi-degree-of-freedom adjustment mechanism 4 and the second multi-degree-of-freedom adjustment mechanism 6.

[0102] In some embodiments, the multi-degree-of-freedom adjustment mechanism employs a six-axis motorized coupling stage. The six-axis motorized coupling stage provides high-precision displacement control in six directions: x, y, z, θx, θy, and θz.

[0103] Two multi-degree-of-freedom adjustment mechanisms are located on either side of the stage along the X-axis. The Z-axis is perpendicular to both the Y-axis and the X-axis. The Y-axis is perpendicular to the X-axis.

[0104] The multi-degree-of-freedom adjustment mechanism includes an XYZ three-axis translation module and a rotary axis assembly (including three rotary axes θX, θY, and θZ). The rotary axis assembly is fixedly mounted on an adapter plate (L-shaped adapter plate), which is fixedly mounted on the XYZ three-axis translation module. A clamp mounting base 6-2 is connected to the output end of the rotary axis assembly of the multi-degree-of-freedom adjustment mechanism.

[0105] In some embodiments, the coupling device of the present invention further includes:

[0106] The dispensing mechanism 9 is configured to dispense adhesive so that the first lens and the second lens are bonded to the PCB board.

[0107] Curing mechanism 10, the curing mechanism 10 being configured to automatically cure adhesive;

[0108] A vision mechanism configured to acquire images of at least the upper region of the loading mechanism and transmit the images to a control unit.

[0109] In some embodiments, the dispensing mechanism 9 and the curing mechanism 10 are electrically connected to the control unit.

[0110] In some embodiments, the dispensing mechanism 9 is fixedly mounted on a multi-degree-of-freedom adjustment mechanism (such as the adapter plate of the multi-degree-of-freedom adjustment mechanism). For example, the dispensing mechanism 9 is fixedly mounted on the first adapter plate 4-1 of the first multi-degree-of-freedom adjustment mechanism 4.

[0111] In some embodiments, the curing mechanism 10 is fixedly mounted on a multi-degree-of-freedom adjustment mechanism (such as the end output of the rotary shaft assembly of the multi-degree-of-freedom adjustment mechanism or the clamp mounting base 6-2). For example, the curing mechanism 10 is fixedly mounted on the clamp mounting base 6-2 of the second multi-degree-of-freedom adjustment mechanism 6.

[0112] In some embodiments, the vision mechanism includes a first vision module 11, which is used to acquire images of the loading mechanism region from a top-down perspective. The optical axis of the first vision module is vertically downward and faces the loading mechanism region.

[0113] In some embodiments, the vision mechanism includes a second vision module 12, which is used to acquire images from a side view of the loading mechanism area. The optical axis of the second vision module is tilted downwards and faces the loading mechanism area.

[0114] In some embodiments, the vision mechanism includes a third vision module 14, which is used to acquire images of the loading mechanism area from an upward angle.

[0115] The optical axis of the third vision module is set vertically upwards, facing the area of ​​the loading mechanism, that is, located between the loading platform and the material platform 15.

[0116] Each vision module is connected to a control unit, and each vision module transmits the acquired images to the control unit. The control unit receives the images transmitted by the vision modules and performs image analysis to assist in automatic coupling.

[0117] The optical axis of the first vision module 11 is perpendicular to the surface of the stage. The optical axis of the second vision module 12 is tilted downwards and points towards the surface of the stage, and the optical axis of the second vision module 12 forms an angle (an acute angle) with the surface of the stage. The optical axis of the third vision module 14 is perpendicular to the bottom surface of the stage.

[0118] In some embodiments, the first vision module 11 is mounted on a first camera mounting plate, which is mounted on a multi-degree-of-freedom adjustment mechanism. For example, the first camera mounting plate is mounted on a second multi-degree-of-freedom adjustment mechanism 6.

[0119] In some embodiments, the first vision module 11 is mounted on a first camera mounting plate, which is mounted on an adapter plate of a multi-degree-of-freedom adjustment mechanism. For example, the first camera mounting plate is mounted on a second adapter plate 6-1 of a second multi-degree-of-freedom adjustment mechanism 6.

[0120] In some embodiments, the second vision module 12 is mounted on a second camera mounting plate, which is mounted on the vision motion adjustment mechanism 13.

[0121] The visual movement adjustment mechanism 13 can at least drive the second visual module 12 to move along the X-axis and Y-axis and adjust the downward tilt angle of the second visual module 12.

[0122] The visual motion adjustment mechanism 13 includes an X- and Y-axis electrically adjustable structure, a first linear module, a second linear module, a third linear module, and an angle adjustment device. The first linear module is fixed to the X- and Y-axis electrically adjustable structure, and the second linear module is fixed to the first linear module. The second linear module is perpendicular to the first linear module. A lifting bracket is fixed to the second linear module, and the lifting bracket has a strip-shaped hole extending vertically. The angle adjustment device includes a first angle adjustment plate and a second angle adjustment plate. The first angle adjustment plate is connected to the strip-shaped hole of the lifting bracket by bolts. The first angle adjustment plate has an arc-shaped strip-shaped hole, and the angle between the first angle adjustment plate and the second angle adjustment plate can be adjusted to achieve relative rotation between the first angle adjustment plate and the second angle adjustment plate. The third linear module is connected to the second angle adjustment plate. The second visual module 12 is connected to the third linear module through a camera mounting plate, and the third linear module is perpendicular to the second visual module 12. The first, second, and third linear modules can be manually controlled linear modules.

[0123] This invention uses a linear module to drive the translation of an object and a rotary module to drive its rotation. The linear and rotary modules can be added or removed as needed for various movement and adjustment mechanisms. Different drive methods can be selected for the linear and rotary modules, such as electrically controlled or manually controlled modules. For example, the linear module can be selected as an electric slide, pneumatic slide, or manually controlled linear module, etc.

[0124] In some embodiments, the third vision module 14 is fixedly mounted on the material stage 15. The optical axis of the third vision module 14 is located between the stage and the tray base 16.

[0125] In other embodiments, the vision mechanism further includes a first reflection module and a second reflection module. The first and second reflection modules are used to reflect the XZ-plane and YZ-plane visual images of the lens to the imaging area of ​​the first vision module, respectively. The first vision module receives the XZ-plane and YZ-plane visual images reflected by the two reflection modules, acquires the XY-plane visual image of the lens, and transmits the XZ-plane, YZ-plane, and XY-plane visual images of the lens to the control unit. The control unit then calculates the lens's attitude angles, including the pitch angle of the XZ-plane, the roll angle of the YZ-plane, and the yaw angle of the XY-plane, based on the multi-view image data of the lens. The first and second reflection modules use mirrors, with the reflecting surfaces of the mirrors arranged at a 45° angle. This combination of dual reflection modules and a single camera can acquire the lens's attitude angles without requiring a multi-camera layout, simplifying the hardware structure and reducing costs.

[0126] In some embodiments, the curing mechanism 10 includes a UV lamp 10-1, which is fixed to a UV fixing member. The UV fixing member is fixedly mounted on a UV mounting bracket 10-2, which is fixedly mounted on a multi-degree-of-freedom adjustment mechanism (such as a second multi-degree-of-freedom adjustment mechanism 6). The UV mounting bracket 10-2 is fixedly mounted on a clamp mounting base 6-2. The clamp mounting base 6-2 is fixed on the multi-degree-of-freedom adjustment mechanism (such as a second multi-degree-of-freedom adjustment mechanism 6).

[0127] In some embodiments, the UV lamp 10-1 is electrically connected to the control unit.

[0128] In some embodiments, the dispensing mechanism 9 includes a dispensing assembly 9-1 (including a dispensing needle), the dispensing assembly 9-1 being fixed to a dispensing mounting bracket 9-2, and the dispensing mounting bracket 9-2 being fixedly mounted on a multi-degree-of-freedom adjustment mechanism (such as a first multi-degree-of-freedom adjustment mechanism 4). The dispensing mounting bracket 9-2 is fixedly mounted on an adapter plate of the multi-degree-of-freedom adjustment mechanism (such as the first multi-degree-of-freedom adjustment mechanism 4).

[0129] In some embodiments, the dispensing assembly 9-1 (including a dispensing needle) is electrically connected to the control unit.

[0130] In some embodiments, the ranging sensor 7 is fixedly mounted on a multi-degree-of-freedom adjustment mechanism (such as a first multi-degree-of-freedom adjustment mechanism 4).

[0131] In some embodiments, the ranging sensor 7 is fixed on the sensor mounting plate 8, which is fixed on a multi-degree-of-freedom adjustment mechanism (such as the first multi-degree-of-freedom adjustment mechanism 4).

[0132] In some embodiments, the sensor mounting plate 8 is fixed to the adapter plate of a multi-degree-of-freedom adjustment mechanism (such as the first multi-degree-of-freedom adjustment mechanism 4).

[0133] In some embodiments, the lens clamp 5 includes a suction nozzle 5-7 and a clamp mounting plate 5-1. An elastic element fixing plate 5-2 and a slide rail slider assembly 5-3 extending in the vertical direction are fixed on the clamp mounting plate 5-1. A slider adapter plate 5-4 is fixed on the slide rail slider assembly 5-3. An elastic element is provided between the slider adapter plate 5-4 and the elastic element fixing plate 5-2. A suction nozzle mounting plate 5-6 is fixed on the slider adapter plate 5-4, and the suction nozzle is fixed on the suction nozzle mounting plate 5-6.

[0134] The slide rail and slider assembly 5-3 includes a slide rail and a slider, with the slide rail and slider slidingly engaged. The slide rail is fixed to the fixture mounting plate 5-1, and the slider is fixedly connected to the slider adapter plate 5-4. The suction nozzle is connected to the vacuum equipment via a pipeline.

[0135] In some embodiments, the clamp mounting plate 5-1 of the lens clamp 5 is fixedly connected to the clamp mounting base 6-2.

[0136] In some embodiments, a displacement sensor 5-8 is fixed on the fixture mounting plate 5-1. The displacement sensor 5-8 is arranged vertically. A sensing plate 5-9 is fixed on the slider adapter plate 5-4. The sensing plate 5-9 is located at the lower end of the displacement sensor 5-8.

[0137] The elastic element is a spring, and a spring limiting element 5-5 is fixed on the elastic element fixing plate 5-2. The spring is sleeved on the spring limiting element 5-5, with one end of the spring abutting against the spring limiting element 5-5 or the elastic element fixing plate 5-2, and the other end of the spring connecting or abutting against the slider adapter plate 5-4. A positioning groove is provided on the slider adapter plate 5-4 for the spring to extend into.

[0138] The lens clamp 5 of the present invention is equipped with a spring. Due to the buffering effect of the spring, it avoids damage to the lens when the suction nozzle picks it up, thus reducing the risk of suction damage.

[0139] The present invention sets a sensor and a sensing plate 5-9 on the lens clamp 5. The control unit monitors the change in the distance between the displacement sensor 5-8 and the corresponding sensing plate 5-9 in real time. When the distance change reaches the set value, the movement state of the multi-degree-of-freedom adjustment mechanism is controlled (such as stopping the currently executed downward movement stroke or horizontal movement stroke) to avoid the suction nozzle from damaging the material and other objects.

[0140] In some embodiments, the PCB fixture includes a PCB fixture base 2-1, the PCB fixture base 2-1 is provided with a groove 2-2 for mounting a PCB board, a PCB push block 2-3 is provided on one side of the groove 2-2, and a limit block 2-4 is detachably fixed on the other side of the groove 2-2.

[0141] In some embodiments, the stage includes a stage base 1-1 and a heat dissipation device. A stage mounting seat 1-2 is fixed on the stage base 1-1, and a heat dissipation mounting seat 1-3 is fixed on the stage mounting seat 1-2. A heat dissipation device is fixed inside the heat dissipation mounting seat 1-3. A heat conduction block 1-7 is provided at the upper end of the heat dissipation device. The PCB fixture base 2-1 of the PCB fixture is provided with a through hole for the heat conduction block 1-7 to pass through.

[0142] In some embodiments, the loading mechanism further includes a material platform 15, on which a tray base 16 is provided. The tray base 16 is provided with a support surface for placing the feeding tray 20, and a limiting device for clamping the feeding tray is provided on the tray base 16.

[0143] In some embodiments, the limiting device includes a tray pusher 17 and an adjusting screw 18. The tray base 16 is provided with a threaded hole for engaging with the adjusting screw 18. The adjusting screw 18 passes through the threaded hole and abuts against the tray pusher 17. The tray is pressed against the tray by the tray pusher 17 to limit the tray position.

[0144] In some embodiments, the material tray pusher block 17 is provided with a guide post 17-1, and the material tray base 16 is fixed with a baffle 19 by bolts. The baffle 19 is provided with a strip hole, and the guide post 17-1 on the pusher block is located in the strip hole of the baffle 19 and is slidably engaged.

[0145] In some embodiments, the limiting block 2-4 is fixed to the PCB fixture base 2-1 by bolts.

[0146] In some embodiments, a heat dissipation drive device 1-9 is fixed inside the stage mounting base 1-2, and the output shaft of the heat dissipation drive device 1-9 is connected to the heat dissipation device. The stage mounting base 1-2 is provided with a plurality of spring mounting holes for mounting springs. A spring pin 1-10 is fixed inside the spring mounting hole, and a spring 1-11 is located above the spring pin 1-10. The upper end of the spring 1-11 extends out of the upper end of the spring mounting hole. The heat dissipation device is located above the spring 1-11. A PCB locking screw 1 is fixed on the heat dissipation mounting base 1-3. -8. PCB push block 2-3 and PCB push block 2-3 bracket. The PCB push block 2-3 is located between the PCB locking screw 1-8 and the PCB push block 2-3 bracket. The PCB push block 2-3 and the PCB push block 2-3 bracket are slidably engaged. The PCB locking screw 1-8 is threadedly connected to the PCB clamp base 2-1 and presses against the PCB push block 2-3. The PCB clamp base 2-1 covers the PCB push block 2-3 and has a through hole for the PCB push block 2-3 to pass through.

[0147] In some embodiments, the heat dissipation drive device 1-9 is a cylinder. There are four spring mounting holes, which are arranged in a rectangular pattern.

[0148] The stage achieves the "on-demand close contact" of the heat dissipation device through "spring elasticity + structural fit".

[0149] In some embodiments, the heat dissipation device includes a heat dissipation mounting plate 1-4, a water cooling device 1-5 (water cooling head) is fixed on the heat dissipation mounting plate 1-4, a cooling chip 1-6 is fixed on the water cooling device 1-5, a heat conducting block 1-7 is fixed on the cooling chip 1-6, and a second through hole is provided on the PCB fixture base 2-1 for the heat conducting block 1-7 to pass through, the second through hole being located in the groove.

[0150] The heat dissipation mounting plate 1-4 is provided with a U-shaped groove, one side of which is open. The output shaft end of the cylinder is connected to a limit nut, which is located inside the U-shaped groove.

[0151] In some embodiments, the limiting block 2-4 is fixed to the PCB fixture base 2-1 by bolts.

[0152] In some embodiments, the lens coupling device includes a power-on module 3 configured to power a PCB board.

[0153] In some embodiments, the power-on module 3 includes a power-on device 3-1, which is fixed on a power-on clamp 3-2. The power-on clamp 3-2 is fixed on a power-on movement adjustment mechanism 3-3, which is configured to at least drive the power-on device 3-1 to translate along a first axis, which is parallel to the length direction of the PCB.

[0154] In some embodiments, the power-on movement adjustment mechanism 3-3 is configured to drive the power-on device 3-1 to translate along the first axis, the second axis, and the third axis, wherein the second axis and the third axis are perpendicular to the first axis, and the second axis is perpendicular to the third axis.

[0155] The axis parallel to the length of the PCB is defined as the first axis, the axis parallel to the width of the PCB is defined as the second axis, and the axis perpendicular to the surface of the PCB is defined as the third axis (Z-axis).

[0156] The power supply device 3-1 is equipped with a power supply interface for electrical connection with the gold fingers of the PCB board. When the gold fingers of the PCB board are electrically connected to the power supply interface of the power supply device 3-1, the power supply device 3-1 supplies power to the PCB board.

[0157] In some embodiments, the power-on module 3 is electrically connected to the control unit.

[0158] Both the material platform 15 and the carrying platform are fixed to the base plate of the carrying platform, and the electrically powered moving adjustment mechanism 3-3 is fixedly connected to the base 1-1 of the carrying platform.

[0159] In some embodiments, the stage base plate, the multi-degree-of-freedom adjustment mechanism, and the visual motion adjustment mechanism 13 are fixed on the optical platform 21.

[0160] The power-on module 3, dispensing mechanism 9, curing mechanism 10 are electrically connected to the control unit. The dispensing method can be, but is not limited to, automatic pneumatic dispensing.

[0161] The control unit includes an industrial computer.

[0162] One coupling process based on the above-mentioned coupling device of the present invention is as follows:

[0163] Step 1: Place the PCB board into the PCB fixture and clamp it in place, ensuring that the Z-axis is at the same height;

[0164] Step 2: The left-hand six-axis moves close to the middle stage, and at the same time, the ranging sensor 7 sends three ranging signals on the side of the PCB board. The three ranging signals can measure how much rotation angle exists in the θx and θy directions of the PCB board. After the ranging is completed, the left-hand six-axis moves away from the stage.

[0165] Step 3: Rotate the six axes of left and right to the measured θx and θy angles to keep the initial angle between the fixture and the PCB board fixed. The repeatability of PCB loading is ensured by rotating the six axes of left and right.

[0166] Step 4: Move the six axes left and right to the material stage 15 to pick up the small lens material, and move it to the adjustment area to rotate the lens angle to the required coupling angle;

[0167] Step 5: The power-on module 3, which has been moved to the coupling area of ​​the PCB board, approaches the PCB fixture to power the PCB board. After successful coupling, the lens is glued to the PCB board by the glue dispensing mechanism 9. The glue is then cured by the UV curing mechanism 10.

[0168] Another coupling process based on the above-mentioned coupling device of the present invention is as follows:

[0169] The PCB board is placed on the fixture and clamped by the limiting fixture. The power-on module 3 clamps the PCB fixture to power on the PCB board.

[0170] Place two plates of material on the material tray and clamp them with the limiting mechanism; move the left and right six axes to the material picking position directly above the two material trays respectively, and use the camera above to identify the position of the small lens xy plane in the material tray, and move the clamp directly above the corresponding lens. At the same time, use the rear camera to identify the height between the lens and the clamp, so that the clamp lowers the corresponding height to pick up the material.

[0171] After picking up the material, the left-hand six-axis moves to the first adjustment position. At this time, three distance signals are sent to the PCB board through the distance sensor. The angles θx and θy between the fixture and the PCB board are obtained based on the three returned distances. The left-hand six-axis compensates for this angle through the rotation axis, so that the first material is parallel to the z plane and has the same angle as the PCB board, thus completing the orientation correction of the first material.

[0172] Simultaneously, the right-hand six-axis, after picking up the material, moves to the second adjustment position. The material angle is observed through the first adjustment camera above and the second adjustment camera below. The right-hand six-axis compensates for the misaligned θx and θy angles through the rotation axis, so that the second material is also parallel to the z-plane and has the same angle as the PCB board, thus completing the orientation correction of the second material.

[0173] With the angles corrected, the left and right six-axis motions move the first and second materials to the coupling position to perform coupling light search. The coupling light search is completed when the light power reaches the specified value.

[0174] The lens is attached to the PCB board by dispensing adhesive using a dispensing module;

[0175] The adhesive is cured by a curing module, thus completing the coupling of the two lenses.

[0176] The aforementioned left-hand six-axis refers to the first multi-degree-of-freedom adjustment mechanism 4, and the right-hand six-axis refers to the second multi-degree-of-freedom adjustment mechanism.

[0177] Based on the same inventive concept, this disclosure also provides a lens coupling method. This lens coupling method is based on the lens coupling device provided in the previous embodiments. For a detailed description of the lens coupling device, please refer to the content in the previous embodiments. The lens coupling method includes the following steps:

[0178] The attitude correction of the lens clamp includes: controlling the distance sensor 7 to collect distance data from three measuring points on the side of the PCB board, and calculating the pitch angle and tilt angle of the PCB board based on the distance data from the three measuring points; and controlling the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform a compensating rotation action equal to the pitch angle and tilt angle based on the pitch angle and tilt angle of the PCB board, so that the reference plane of the lens clamp 5 or the lens on the multi-degree-of-freedom adjustment mechanism is parallel to the reference plane of the PCB board, thereby realizing the attitude correction of the lens clamp 5.

[0179] After the lens fixture has been corrected, the lens is picked up and the multi-degree-of-freedom adjustment mechanism is controlled to move the picked-up lens to the coupling position on the PCB board to perform coupling and light finding, so that the light is coupled out through the lens.

[0180] Obtain the optical power exported after coupling through the lens. If the optical power meets the standard, the coupling and light finding is completed.

[0181] In some embodiments, after the attitude correction of the lens clamp 5 is completed, the multi-degree-of-freedom adjustment mechanism is controlled to move to the material stage 15 to pick up the lens. After picking up the lens, it moves to a preset adjustment area for the lens image to be captured by the camera. The attitude data of the lens is obtained based on the lens image. Based on the attitude data of the lens, the multi-degree-of-freedom adjustment mechanism is controlled to adjust the attitude of the lens so that the lens angle is rotated to the required coupling angle (so that the reference surface of the lens clamp 5 or the lens on the multi-degree-of-freedom adjustment mechanism is parallel to the reference surface of the PCB board).

[0182] After rotating the lens to the required coupling angle, perform coupling and light finding.

[0183] In other embodiments, after the attitude correction of the lens clamp 5 is completed, the multi-degree-of-freedom adjustment mechanism is controlled to move to the material stage 15 to pick up the lens. After picking up the lens, it is moved to a preset adjustment area for the lens image to be captured by the camera. The attitude data of the lens is obtained according to the lens image. The multi-degree-of-freedom adjustment mechanism is controlled to adjust the attitude of the lens, so that the lens angle is rotated to the angle required for coupling, so that the reference surface of the lens clamp 5 or the lens on the multi-degree-of-freedom adjustment mechanism is parallel to the reference surface of the PCB board, and the optical axis of the lens is basically collinear with the optical axis of the target device, so as to ensure that the optical axis of the lens and the optical axis of the device are basically aligned (pre-aligned) in the general direction.

[0184] After rotating the lens to the required coupling angle, perform coupling and light finding.

[0185] Controlling the "parallelism between the lens and the PCB" only ensures that there is no angle between the lens reference plane and the PCB reference plane, but it cannot solve the implicit deviation of "the optical axis of the lens and the optical axis of the device are not collinear". The core of "the angle required for coupling" is to eliminate such deviations through visual fine adjustment and achieve "precise alignment of the optical axis", which can greatly improve the coupling efficiency.

[0186] In some embodiments, the lens coupling method of the present invention further includes: controlling the power-on module 3 to power the PCB board, the light source on the PCB board emits light, and when coupling to find light, the light is coupled out through the lens.

[0187] In some embodiments, obtaining the optical power exported after lens coupling includes: detecting the optical power exported after lens coupling through an optical power detection module.

[0188] In some embodiments, after the coupling and light-finding process is completed, the following steps are also included:

[0189] By controlling the dispensing mechanism to apply 9 dots of glue, the lens is glued to the PCB board;

[0190] The lens coupling is completed by controlling the curing mechanism 10 to cure the adhesive.

[0191] In some embodiments, the first multi-degree-of-freedom adjustment mechanism 4 and the second multi-degree-of-freedom adjustment mechanism 6 are synchronously coupled with the lens to find light.

[0192] Based on the same inventive concept, this disclosure also provides a lens coupling method. This lens coupling method is based on the lens coupling device provided in the previous embodiments. For a detailed description of the lens coupling device, please refer to the content in the previous embodiments. The lens coupling method includes the following steps:

[0193] After the multi-degree-of-freedom adjustment mechanism picks up the lens, it performs lens attitude correction, including: controlling the multi-degree-of-freedom adjustment mechanism to move the picked-up lens to a preset adjustment area, acquiring the lens image captured by the camera, obtaining the lens attitude data based on the lens image, and controlling the multi-degree-of-freedom adjustment mechanism to adjust the lens attitude based on the lens attitude data, so that the mounting reference plane of the lens is parallel to the reference plane of the PCB board, thereby realizing the lens attitude correction.

[0194] After the lens attitude is corrected, the multi-degree-of-freedom adjustment mechanism is controlled to move the picked-up lens to the coupling position on the PCB board to perform coupling and light finding, so that the light is coupled out through the lens.

[0195] Obtain the optical power exported after coupling through the lens. If the optical power meets the standard, the coupling and light finding is completed.

[0196] In some embodiments, the lens coupling method of the present invention further includes: controlling the power-on module 3 to power the PCB board, the light source on the PCB board emits light, and when coupling to find light, the light is coupled out through the lens.

[0197] In some embodiments, obtaining the optical power exported after lens coupling includes: detecting the optical power exported after lens coupling through an optical power detection module.

[0198] In some embodiments, after the coupling and light-finding process is completed, the following steps are also included:

[0199] By controlling the dispensing mechanism to apply 9 dots of glue, the lens is glued to the PCB board;

[0200] The lens coupling is completed by controlling the curing mechanism 10 to cure the adhesive.

[0201] In some embodiments, the first multi-degree-of-freedom adjustment mechanism 4 and the second multi-degree-of-freedom adjustment mechanism 6 are synchronously coupled with the lens to find light.

[0202] Based on the same inventive concept, this disclosure also provides a dual-lens coupling method. This dual-lens coupling method is based on the lens coupling device provided in the previous embodiments. For a detailed description of the lens coupling device, please refer to the content in the previous embodiments. The dual-lens coupling method includes the following steps:

[0203] Control the first multi-degree-of-freedom adjustment mechanism and the second multi-degree-of-freedom adjustment mechanism to move to the first material picking position and the second material picking position respectively, and control the first multi-degree-of-freedom adjustment mechanism to pick up the first lens and control the second multi-degree-of-freedom adjustment mechanism to pick up the second lens;

[0204] After the first multi-degree-of-freedom adjustment mechanism picks up the first lens, it moves the picked-up first lens to the first adjustment area. Using distance data from three measuring points on the side of the PCB board collected by the distance sensor, the pitch and roll angles of the PCB board are calculated. Based on these angles, the rotation axis of the first multi-degree-of-freedom adjustment mechanism is controlled to perform a rotational action to compensate for the pitch and roll angles, making the mounting reference surface of the first lens parallel to the reference surface of the PCB board, thus completing the attitude correction of the first lens. Simultaneously, after the second multi-degree-of-freedom adjustment mechanism picks up the second lens, it moves the picked-up second lens to the preset second adjustment area, acquires an image of the second lens captured by the camera, obtains the attitude data of the second lens based on the image, and controls the second multi-degree-of-freedom adjustment mechanism to adjust the attitude of the second lens, making the mounting reference surface of the second lens parallel to the reference surface of the PCB board, thus completing the attitude correction of the second lens.

[0205] After the attitude correction of the first lens is completed, the first multi-degree-of-freedom adjustment mechanism is controlled to move the first lens to the first coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected first optical power reaches the specified value. At the same time, after the attitude correction of the second lens is completed, the second multi-degree-of-freedom adjustment mechanism is controlled to move the second lens to the second coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected second optical power reaches the specified value.

[0206] In some embodiments, the lens coupling method of the present invention further includes: controlling the power-on module 3 to power the PCB board, the light source on the PCB board emits light, and when coupling to find light, the light is coupled out through the lens.

[0207] In some embodiments, obtaining the optical power exported after lens coupling includes: detecting the optical power exported after lens coupling through an optical power detection module.

[0208] In some embodiments, after the coupling and light-finding process is completed, the following steps are also included:

[0209] By controlling the dispensing mechanism to apply 9 dots of glue, the lens is glued to the PCB board;

[0210] The lens coupling is completed by controlling the curing mechanism 10 to cure the adhesive.

[0211] In some embodiments, the first multi-degree-of-freedom adjustment mechanism 4 and the second multi-degree-of-freedom adjustment mechanism 6 are synchronously coupled with the lens to find light.

[0212] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lens coupling device, characterized in that, include: A loading mechanism, the loading mechanism including a loading stage, a PCB clamp mounted on the loading stage, the PCB clamp being configured to fix a PCB board; A ranging sensor is configured to collect distance data from three measuring points on a PCB board and transmit it to a control unit, so that the control unit can calculate the pitch angle and roll angle of the PCB board based on the distance data from the three measuring points. A multi-degree-of-freedom adjustment mechanism is provided, on which a lens clamp is mounted. The lens clamp is configured to fix a lens. The multi-degree-of-freedom adjustment mechanism is electrically connected to a control unit. The multi-degree-of-freedom adjustment mechanism is configured to drive the lens clamp mounted thereon to move along multiple translational and rotational directions. The control unit is configured to control the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform rotational movements to compensate for the pitch and roll angles based on the pitch and roll angles of the PCB board.

2. The coupling device as described in claim 1, characterized in that: The ranging sensor is fixedly mounted on a multi-degree-of-freedom adjustment mechanism; or / and, There are two multi-degree-of-freedom adjustment mechanisms, which are located on both sides of the loading mechanism.

3. The coupling device as described in claim 1, characterized in that: Also includes: A power-on module, configured to power the PCB board; or / and, A dispensing mechanism is configured to dispense adhesive, thereby bonding the first lens and the second lens onto the PCB board. or / and, A curing mechanism configured to automatically cure adhesive; or / and, A vision mechanism configured to acquire images of at least the upper region of the loading mechanism and transmit the images to a control unit.

4. The coupling device as described in claim 3, characterized in that: The dispensing mechanism is fixedly mounted on the multi-degree-of-freedom adjustment mechanism; or / and, The curing mechanism is fixedly mounted on the multi-degree-of-freedom adjustment mechanism; or / and, The vision mechanism includes: A first vision module is used to acquire images of the loading mechanism area from a top-down perspective. or / and, The second vision module is used to acquire images of the side view of the loading mechanism area; or / and, The third vision module is used to acquire images of the loading mechanism area from an upward perspective.

5. The coupling device as described in claim 3, characterized in that: The power-on module includes a power-on device, which is fixed on a power-on fixture. The power-on fixture is fixed on a power-on movement adjustment mechanism, which is configured to at least drive the power-on device to translate along a first axis, which is parallel to the length direction of the PCB.

6. The coupling device as described in claim 1, characterized in that: The lens fixture includes a suction nozzle and a fixture mounting plate. An elastic element fixing plate and a slide rail slider assembly extending in the vertical direction are fixed on the fixture mounting plate. A slider adapter plate is fixed on the slide rail slider assembly. An elastic element is provided between the slider adapter plate and the elastic element fixing plate. A suction nozzle mounting plate is fixed on the slider adapter plate. The suction nozzle is fixed on the suction nozzle mounting plate.

7. The coupling device as described in claim 1, characterized in that: The PCB fixture includes a PCB fixture base, which has a groove for mounting a PCB board. A PCB push block is provided on one side of the groove, and a limit block is detachably fixed on the other side of the groove. or / and, The stage includes a stage base and a heat dissipation device. A stage mounting seat is fixed on the stage base, and a heat dissipation mounting seat is fixed on the stage mounting seat. A heat dissipation device is fixed inside the heat dissipation mounting seat. A heat-conducting block is provided at the upper end of the heat dissipation device. The PCB fixture base of the PCB fixture is provided with a through hole for the heat-conducting block to pass through. or / and, The loading mechanism also includes a material platform, on which a material tray base is provided. The material tray base is provided with a support surface for placing the material tray, and a limiting device for clamping the material tray is provided on the material tray base.

8. The coupling device as described in claim 7, characterized in that: A heat dissipation drive device is fixed inside the stage mounting base. The output shaft of the heat dissipation drive device is connected to the heat dissipation device. The stage mounting base is provided with a spring mounting hole for mounting a spring. A spring pin is fixed inside the spring mounting hole. The spring is located at the upper end of the spring pin, and the upper end of the spring extends out of the upper end of the spring mounting hole. The heat dissipation device is located at the upper end of the spring. A PCB locking screw, a PCB push block, and a PCB push block bracket are fixed on the heat dissipation mounting base. The PCB push block is located between the PCB locking screw and the PCB push block bracket. The PCB push block and the PCB push block bracket are slidably engaged. The PCB locking screw is threadedly connected to the PCB clamp base and presses against the PCB push block. The PCB clamp base covers the PCB push block and is provided with a through hole for the PCB push block to pass through.

9. A lens coupling method, characterized in that, Includes the following steps: The attitude correction of the lens fixture includes: controlling the distance sensor to collect distance data from three measuring points on the side of the PCB board, calculating the pitch and tilt angles of the PCB board based on the distance data from the three measuring points, and controlling the rotation axis of the multi-degree-of-freedom adjustment mechanism to perform rotational movements to compensate for the pitch and tilt angles based on the pitch and tilt angles of the PCB board. After the lens fixture's posture is corrected, the multi-degree-of-freedom adjustment mechanism is controlled to move the picked-up lens to the coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected optical power reaches the specified value.

10. A lens coupling method, characterized in that, Includes the following steps: Control the first multi-degree-of-freedom adjustment mechanism and the second multi-degree-of-freedom adjustment mechanism to move to the first material picking position and the second material picking position respectively, and control the first multi-degree-of-freedom adjustment mechanism to pick up the first lens and control the second multi-degree-of-freedom adjustment mechanism to pick up the second lens; After the first multi-degree-of-freedom adjustment mechanism picks up the first lens, it controls the first multi-degree-of-freedom adjustment mechanism to move the picked-up first lens to the first adjustment area, acquires the distance data of three measuring points on the side of the PCB board collected by the ranging sensor, calculates the pitch angle and tilt angle of the PCB board based on the distance data of the three measuring points, and controls the rotation axis of the first multi-degree-of-freedom adjustment mechanism to perform a rotation action to compensate for the pitch angle and tilt angle, thus completing the attitude correction of the first lens; at the same time, after the second multi-degree-of-freedom adjustment mechanism picks up the second lens, it controls the second multi-degree-of-freedom adjustment mechanism to move the picked-up second lens to the preset second adjustment area, acquires the image of the second lens collected by the camera, obtains the attitude data of the second lens based on the image of the second lens, and controls the second multi-degree-of-freedom adjustment mechanism to adjust the attitude of the second lens based on the attitude data of the second lens, thus completing the attitude correction of the second lens; After the attitude correction of the first lens is completed, the first multi-degree-of-freedom adjustment mechanism is controlled to move the first lens to the first coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected first optical power reaches the specified value. At the same time, after the attitude correction of the second lens is completed, the second multi-degree-of-freedom adjustment mechanism is controlled to move the second lens to the second coupling position on the PCB board for coupling and light finding. The coupling and light finding is completed when the detected second optical power reaches the specified value.

Images