An optical module automatic test equipment and method

Abstract

The application discloses an optical module automatic testing device and method, the device comprises a rack, the rack is fixed with a feeding and discharging mechanism, a taking assembly, a turnover code scanning mechanism and a testing mechanism, the feeding and discharging mechanism is used for realizing automatic feeding and discharging of the optical module, the turnover code scanning mechanism is used for clamping and overturning the optical module and reading the bar code information of the optical module, and the testing mechanism is used for testing the optical module at least, the taking assembly comprises a carrying mechanism and a clamping mechanism used for clamping the optical module, the clamping mechanism of the taking assembly is installed on the carrying mechanism, and the moving path of the clamping mechanism passes through the feeding and discharging mechanism, the turnover code scanning mechanism and the testing mechanism respectively, so as to transfer the optical module between the feeding and discharging mechanism, the turnover code scanning mechanism and the testing mechanism. The application realizes the production steps of automatic feeding and discharging, code scanning, angle switching, positioning and plugging, program downloading, ground isolation testing and product classification of the packaged optical module. The application can reduce the labor, improve the production capacity and production efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automatic production of optical modules, and particularly relates to an optical module automatic testing device and method. BACKGROUND

[0002] With the rapid development of the optical communication field, the demand for optical modules has increased rapidly in recent years. At present, the procedures and tests (such as ground isolation tests) of packaged optical modules are mainly completed by manual operation, which has the following defects: 1. The plugging methods of manual procedures and tests (such as ground isolation tests) are inconsistent, and there is a problem of poor repeatability in front, back, left, right, up and down positions, which causes repeated operation and low efficiency; 2. At present, the bar code on the front or side of the optical module is scanned by manual operation, and the SN is stored in the test software, and then the optical module is inserted into the test board female port in the specified direction for testing, one person simultaneously operates multiple test board female ports, and the manual classification of OK or NG workpieces has the problems of easy mixing and easy error; 3. At present, considering the production capacity balance, the tests (such as ground isolation tests) and the procedures are two production processes, which consume more manpower; 4. The whole process needs manual operation and intermittent waiting for test results, which consumes long working hours and has the problem of low labor time utilization rate. SUMMARY

[0003] The purpose of the present application is to overcome at least one of the defects in the prior art, and to provide an optical module automatic testing device and method, which can reduce manpower and improve production capacity and production efficiency.

[0004] The technical scheme of the present application is as follows: The present application discloses an optical module automatic testing device, which comprises a rack, an upper and lower feeding mechanism, a workpiece taking assembly, a turnover code scanning mechanism and a testing mechanism fixed on the rack, the upper and lower feeding mechanism is used to realize automatic feeding and discharging of optical modules, the turnover code scanning mechanism is used to clamp and turn over the optical modules and read the bar code information of the optical modules, the testing mechanism is used to test the optical modules, the workpiece taking assembly comprises a clamping mechanism for clamping the optical modules and a carrying mechanism for moving the clamping mechanism, the clamping mechanism of the workpiece taking assembly is installed on the carrying mechanism, and the moving path of the clamping mechanism passes through the upper and lower feeding mechanism, the turnover code scanning mechanism and the testing mechanism respectively, so as to transfer the optical modules between the upper and lower feeding mechanism, the turnover code scanning mechanism and the testing mechanism.

[0005] Further, the rack comprises a large rack and a small rack, large mounting plates are arranged at the top of the large rack respectively, the workpiece taking assembly, the turnover code scanning mechanism, the testing mechanism and the NG tray are arranged on the large mounting plates, and the upper and lower feeding mechanism is arranged at the top of the small rack and is combined and fixed on the large mounting plate.

[0006] Further, the taking-out assembly and the turnover code scanning mechanism are both provided with two sets of clamping mechanisms, and the two sets of clamping mechanisms of the taking-out assembly correspond to the two sets of clamping mechanisms of the turnover code scanning mechanism, so that the two sets of clamping mechanisms of the taking-out assembly can respectively transfer the clamped optical modules to the two sets of clamping mechanisms of the turnover code scanning mechanism.

[0007] The distance between the two sets of clamping mechanisms of the taking-out assembly is equal to the distance between the two sets of clamping mechanisms of the turnover code scanning mechanism.

[0008] Further, the feeding and discharging mechanism comprises a conveying mechanism, a discharging mechanism and a feeding mechanism, the conveying mechanism is respectively fixed with a feeding bin and a recycling bin, the conveying mechanism is provided with a conveying plate for carrying and conveying the tray, and the moving path of the conveying plate passes through the recycling bin, the feeding bin and a taking-out station arranged on the conveying mechanism.

[0009] The discharging mechanism is located below the feeding bin, and the discharging mechanism cooperates with the feeding bin to realize the discharging of the trays in the feeding bin one by one to the conveying plate.

[0010] The feeding mechanism is located below the recycling bin, and the feeding mechanism cooperates with the recycling bin to lock the trays one by one from the conveying plate into the recycling bin.

[0011] The feeding and discharging mechanism is provided with a feeding bin station and a recycling bin station. The recycling bin is fixed on the conveying mechanism corresponding to the position of the recycling bin station, and the feeding bin is fixed on the conveying mechanism corresponding to the position of the feeding bin station.

[0012] Further, the feeding bin comprises a feeding bin frame, the feeding bin frame is fixed on the conveying frame of the conveying mechanism, the feeding bin frame is provided with an inner cavity for stacking the trays, the upper end of the feeding bin frame is provided with a feeding port of the trays, the lower end of the feeding bin frame is provided with a discharging port of the trays, the lower end of the feeding bin frame is provided with a clamping device for clamping the lowermost tray, and the discharging mechanism is located below the feeding bin frame.

[0013] Further, the discharging mechanism comprises a sensor, an upper discharging cylinder and a lower discharging cylinder, the sensor is used for detecting whether there is a tray in the feeding bin, the conveying plate is provided with a through hole for the output shaft of the upper discharging cylinder and the lower discharging cylinder to pass through, when the upper discharging cylinder is extended to the position, the output shaft of the upper discharging cylinder is fixed with a top tray plate, the top tray plate is in contact with the lowermost tray, i.e. the first tray, in the clamping position in the feeding bin, and supports the lowermost layer, i.e. the first tray, when the lower discharging cylinder is extended to the position and the upper discharging cylinder is retracted to the position, the first tray is lowered to be in contact with the top tray plate fixed on the output shaft of the lower discharging cylinder, and at the same time, the second tray at the upper end of the first tray is lowered to the clamping position.

[0014] Further, the recycling bin comprises a recycling bin frame fixed on the conveying frame of the conveying mechanism, the recycling bin frame is provided with an inner cavity for stacking the feeding tray, the lower end of the recycling bin frame is provided with a feeding port, the upper end of the recycling bin frame is provided with a discharging port, the lower end of the recycling bin frame is provided with a tray supporting block, the tray supporting block is hingedly connected with the connecting seat of the lower end of the recycling bin frame through a pin shaft, and the tray supporting block is provided with a hinged hole for the pin shaft.

[0015] Further, the bin feeding mechanism is located below the recycling bin frame, the bin feeding mechanism comprises a bin feeding cylinder for upwardly lifting the feeding tray, and the conveying plate is provided with a through hole for the output shaft of the bin feeding cylinder.

[0016] The tray supporting block is provided with a flat surface and an inclined surface, and when the tray supporting block is only subjected to gravity, the flat surface of the upper end of the tray supporting block is horizontal.

[0017] Further, the conveying mechanism comprises a conveying frame, a conveying power device and a conveying transmission device mounted on the conveying frame, the conveying power device is connected with the conveying transmission device, the conveying power device is used for providing power for the conveying transmission device, the conveying transmission device is connected with the conveying plate, and the conveying transmission device is used for converting the power provided by the conveying power device into linear power in the X-axis or Y-axis direction to drive the conveying plate to move in the X-axis or Y-axis direction. The conveying transmission device of the embodiment is used for converting the power provided by the conveying power device into linear power in the Y-axis direction to drive the conveying plate to move in the Y-axis direction. The conveying frame is provided with conveying sliding rails on both sides of the inner cavity, the conveying plate is in sliding fit with the conveying sliding rails, and the conveying plate is driven by the conveying transmission device to reciprocate along the conveying sliding rails.

[0018] The conveying power device can adopt, but is not limited to, a motor.

[0019] The conveying transmission device comprises a synchronous belt, a driving pulley and a driven pulley, the driving pulley and the driven pulley are rotatably supported on the conveying frame, the driving pulley is connected with the conveying power device for driving the driving pulley to rotate, the synchronous belt is connected with the driving pulley and the driven pulley, and the synchronous belt is connected with the conveying plate through a connecting piece.

[0020] The conveying mechanism drives the conveying motor, and then drives the conveying sliding rail connecting plate to reciprocate along the guide rail of the conveying sliding rail through the synchronous belt transmission.

[0021] The conveying mechanism comprises a small mounting plate, a mounting left side plate, a mounting right side plate, a conveying motor, a conveying motor mounting plate, a synchronous belt, a driving synchronous pulley, a driven synchronous pulley, a conveying slide rail, a conveying slide rail connecting plate, and a synchronous belt connecting block. The conveying slide rail connecting plate is connected and fixed to the upper slide blocks of the two sets of conveying slide rails, and is connected to the synchronous belt through the synchronous belt connecting block to form an integral whole. The conveying mechanism is provided with a limiting pin on the conveying slide rail connecting plate. The stroke space of the mounting left side plate, the mounting right side plate, and the limiting pin is just capable of accommodating a tray. When a tray is arranged in the space, the tray can reciprocate along the guide rail direction of the conveying slide rail.

[0022] The incoming material bin realizes the axial sliding of the slide rail connecting plate along the guide rod of the tray slide rail by controlling the extension and retraction of the tray cylinder, thereby realizing the functions of the extension of the tray cylinder and the simultaneous retraction of the tray. The features comprise four angle aluminum, an angle aluminum fixing seat, a tray slide rail, a tray cylinder, a tray assembly fixing plate, and a tray slide rail connecting plate. The tray slide rail connecting plate is connected and fixed to the guide rod shaft end of the tray slide rail, and is fixed to the piston rod of the tray cylinder.

[0023] The recycling bin comprises four angle aluminum, an angle aluminum fixing seat, an angle aluminum connecting plate, four tray support blocks, a tray support block mounting shaft, and a support angle shaft mounting seat. The center of gravity of the tray support block is not on the shaft center, thereby ensuring that the parallel surface of the tray support block is horizontal under the action of gravity in a natural state. When a tray is pushed upwards to a certain position, the tray support block is pushed upwards and inclined. When the tray is continuously pushed to a certain height, the tray support block is only subjected to gravity, thereby causing the parallel surface of the tray support block to be horizontal, i.e., the tray is locked into the recycling bin. Subsequent other trays are locked into the recycling bin one by one from the bottom to the top.

[0024] The outgoing bin mechanism comprises an upper outgoing bin cylinder, a lower outgoing bin cylinder, a sensor, a guide rail shaft of a linear guide rail, and a tray lifting plate. The tray lifting plate is fixed to the lever body of the upper outgoing bin cylinder, and is fixed to the guide rail shaft ends of the two linear guide rails. The upward and downward movement of the tray lifting plate along the guide rail shaft of the linear guide rail is realized by controlling the extension and retraction of the upper outgoing bin cylinder. The stroke of the upper outgoing bin cylinder is equal to the thickness of the tray. When the upper and lower outgoing bin cylinders are extended, the tray lifting plate is in contact with the bottom surface of the lowermost tray (which can be referred to as the first tray) in the incoming material bin, as confirmed by the sensor. When only the upper outgoing bin cylinder is retracted, the second tray is lowered to the initial position of the first tray. At this time, when the two tray cylinders are extended, the second tray becomes the lowermost tray in the incoming material bin. When the upper and lower outgoing bin cylinders are retracted, the first tray is further lowered to the conveying slide rail connecting plate, and can reciprocate along the guide rail direction of the conveying slide rail under the action of the limiting pin on the conveying slide rail connecting plate and the side plate.

[0025] The warehousing mechanism includes a warehousing cylinder, an upper sensor and a lower sensor. The top disc plate is fixed on the piston rod of the warehousing cylinder and the guide rail shaft end of the linear guide rail. The top disc plate is lifted and lowered along the linear guide rail by controlling the extension and retraction of the warehousing cylinder. The position of the top disc plate is just above the four loading plates of the recycling bin, which are parallel to the horizontal plane. Therefore, the warehousing mechanism cooperates with the recycling bin to lock all the trays into the recycling bin one by one.

[0026] Further, the taking assembly and the turnover code scanning mechanism are both provided with two sets of clamping mechanisms, and the two sets of clamping mechanisms of the taking assembly correspond to the two sets of clamping mechanisms of the turnover code scanning mechanism, so that the two sets of clamping mechanisms of the taking assembly can respectively transfer the clamped optical modules to the two sets of clamping mechanisms of the turnover code scanning mechanism.

[0027] The distance between the two sets of clamping mechanisms of the taking assembly is equal to the distance between the two sets of clamping mechanisms of the turnover code scanning mechanism.

[0028] Further, the conveying mechanism is used to drive the clamping mechanisms to move in the horizontal direction and the vertical direction, to transfer the optical modules between the feeding and discharging mechanism, the turnover code scanning mechanism and the testing mechanism, and to insert the optical modules into the interface of the testing mechanism in a specified direction for testing. The conveying mechanism includes an XY-axis movement mechanism and a Z-axis movement mechanism. The Z-axis movement mechanism is fixed on the XY-axis movement mechanism, and the XY-axis movement mechanism drives the Z-axis movement mechanism to move along the X-axis and the Y-axis. The clamping mechanisms are fixed on the Z-axis movement mechanism, and the Z-axis movement mechanism drives the clamping mechanisms to move along the Z-axis.

[0029] Further, the XY-axis movement mechanism is an XY gantry conveying mechanism.

[0030] Further, the XY gantry conveying mechanism controls the linear motion structure of the screw rod module through two sets of servo motors in the X and Y vertical directions, to realize the multi-station position switching of the workpiece on the XY gantry conveying mechanism at the taking station of the material bin feeding and discharging mechanism, the NG tray device station, the turnover code scanning mechanism station and the lower program and testing mechanism station. The features include front and rear sliding rail mounting plates and front and rear module mounting plates, which are respectively arranged on the left and right sides of the large mounting plate. The front and rear sliding rail mounting plates are provided with front and rear translation sliding rails, and the front and rear module mounting plates are provided with front and rear conveying screw rod modules. The front and rear translation sliding rails are provided with sliding rail adapter plates, and the front and rear conveying screw rod modules are provided with module adapter plates. The left and right module mounting plates are arranged above the sliding rail adapter plates and the module adapter plates, and below the left and right conveying screw rod modules. The left and right conveying screw rod modules are provided with an upper and lower taking mounting plate above, and a Z-axis upper and lower buffer movement mechanism is fixed on the side of the upper and lower taking mounting plate.

[0031] Further, the Z-axis movement mechanism comprises a mounting bracket, an up-down movement slide rail and a lifting device fixed on the mounting bracket, the up-down movement slide rail extends along the Z-axis direction, an up-down slide rail adapter plate is slidably connected on the up-down movement slide rail, the up-down slide rail adapter plate is connected with the lifting device for driving the up-down slide rail adapter plate to move up and down, a buffer slide rail is fixed on the up-down slide rail adapter plate, the buffer slide rail is connected with the material clamping mechanism, and a buffer tension spring is arranged between the up-down slide rail adapter plate and the material clamping mechanism.

[0032] Further, the lifting device comprises a lifting power device and a lifting transmission device, the lifting power device is connected with the lifting transmission device, the lifting power device is used for providing power for the lifting transmission device, the lifting transmission device is connected with the up-down slide rail adapter plate, and the lifting transmission device is used for converting the power provided by the lifting power device into linear power along the Z-axis direction to drive the up-down slide rail adapter plate to move along the Z-axis direction. The lifting power device can be, but is not limited to, a motor.

[0033] Further, the lifting transmission device comprises a synchronous belt, a driving belt pulley and a driven belt pulley, the driving belt pulley and the driven belt pulley are rotatably supported on the mounting bracket, the driving belt pulley is connected with the motor for driving the driving belt pulley to rotate, the synchronous belt is connected with the driving belt pulley and the driven belt pulley, and the synchronous belt is connected with the up-down slide rail adapter plate through a connecting piece.

[0034] Further, the Z-axis movement mechanism controls the synchronous belt transmission mechanism through the holding brake stepping motor to realize the up-down movement of the slider of the up-down movement slide rail along the Z-axis direction.

[0035] The holding brake motor mounting plate is arranged on the up-down material taking mounting plate, the holding brake motor mounting plate is provided with a holding brake stepping motor, a photoelectric switch, an idler mounting shaft and an up-down movement slide rail. The synchronous belt pulley is arranged on the holding brake stepping motor, and the idler is arranged on the idler mounting shaft. The up-down movement slide rail is connected with the synchronous belt through a belt connecting piece. The up-down slide rail is provided with an up-down slide rail adapter plate, and the up-down slide rail adapter plate is provided with a buffer slide rail. The two ends of the buffer tension spring are arranged at the side edges of the up-down slide rail adapter plate and the side edges of the material clamping mechanism respectively.

[0036] Further, the clamping mechanism comprises a clamping power device, a cam plate and left and right workpiece clamps, the clamping power device is fixed on a clamping mounting plate, the clamping mounting plate is further provided with a vertical slide rail and a horizontal slide rail, the cam plate is slidingly connected on the vertical slide rail, the upper end of the cam plate is connected with the output shaft of the clamping power device, the lower end of the cam plate is provided with oppositely arranged inclined surfaces, the left and right workpiece clamps are slidingly connected on the horizontal slide rail respectively, the left and right workpiece clamps are both provided with cam followers and are in contact with the inclined surfaces on the left and right sides of the cam plate respectively, when the cam plate moves downward, the left and right workpiece clamps are pressed close to each other, and the left and right workpiece clamps are provided with elastic elements for moving away from each other.

[0037] The elastic element is a compression spring.

[0038] The clamping power device adopts but is not limited to a clamping air cylinder.

[0039] The clamping mechanism realizes the clamping and discharging functions of the optical module through the movement of the cylinder piston and the guidance of the slide rail. The buffer slide rail adapter is arranged on the buffer slide rail, the clamping cylinder mounting plate is arranged at the top end of the buffer slide rail adapter, and two sets of clamping cylinders are arranged left and right, the two sets of clamping cylinders are the same type of threaded cylinders, and the piston rods of the two sets of clamping cylinders are provided with floating joints. The buffer slide rail adapter is provided with a buffer tension spring, two sets of vertical slide rails and two sets of horizontal double-block slide rails, and the two sets of vertical slide rails are respectively provided with cam plates. The two sets of horizontal double-block slide rails are both provided with a set of left and right workpiece clamps, and the left and right workpiece clamps are both provided with cam followers. The other end of the buffer tension spring is arranged on the upper and lower slide rail adapter.

[0040] Further, the turnover code scanning mechanism comprises an angle rotating mechanism, a transfer clamping mechanism for clamping the optical module and a code scanning device for reading the bar code on the optical module, and the transfer clamping mechanism is connected with the angle rotating mechanism for driving the rotation thereof.

[0041] Further, the angle rotating mechanism controls the synchronous belt transmission mechanism through a stepping motor, so as to realize the rotation of two optical modules in multiple directions (incoming direction: the front of the optical module faces upward, code reading direction: the front of the optical module faces downward or a side surface, and test direction: the front of the optical module faces downward).

[0042] The turnover code scanning mechanism further comprises a turnover mechanism mounting plate, a bearing fixing seat and a photoelectric switch are arranged on the turnover mechanism mounting plate, two sets of double bearings and a rotating motor mounting plate are arranged on the bearing fixing seat; the two sets of double bearings are each provided with a rotating shaft, a set of large synchronous wheels are arranged on the two sets of rotating shafts, a rotating motor is arranged on the turnover motor mounting plate, a small synchronous wheel is arranged on the rotating motor, and the rotating motor is a stepping motor; the stepping motor rotates to drive the two sets of large synchronous wheels to rotate through a synchronous belt transmission.

[0043] The intermediate transfer clamping mechanism realizes the clamping and discharging functions of the optical module through the movement of the cylinder piston and the cooperation of the slide rail guide. The intermediate transfer clamping mechanism is arranged on the rotating shaft and comprises a threaded cylinder and a rotating slide rail.

[0044] The code scanning device realizes the function of alternately scanning the optical modules on the two clamping jaws by switching the workstations of the camera back and forth through the cylinder control.

[0045] The code scanning device comprises a code reading camera and a camera fixing cylinder.

[0046] Further, the testing mechanism comprises a testing plate, a mounting seat, and a testing plate fixing seat, the testing plate is provided with an interface for plugging with the optical module, the testing plate is fixed on the testing plate fixing seat, the mounting seat is provided with a slide rail, the testing plate fixing seat is in sliding cooperation with the slide rail, and a buffer elastic member is arranged between the testing plate fixing seat and the mounting seat.

[0047] Further, when the optical module is inserted into the interface of the testing plate, a pushing force is applied to the testing plate fixing seat, and the buffer elastic member is used to provide a force opposite to the pushing force to the testing fixing seat.

[0048] Further, the buffer elastic member is a buffer tension spring or a compression spring.

[0049] Further, the optical module testing mechanism of the present application further comprises a height limiting seat for limiting the optical module.

[0050] Further, the height limiting seat is fixed on an anti-over-insertion limiting plate, and the anti-over-insertion limiting plate is detachably fixed on the testing plate.

[0051] Further, the test board is provided with an interface adapter plate, and the interface for plugging with the optical module is arranged on the interface adapter plate, and the interface adapter plate is electrically connected with the test board.

[0052] Further, the test board is provided with an interface adapter plate, and the interface for plugging with the optical module is arranged on the interface adapter plate, and the interface adapter plate is electrically connected with the test board.

[0053] Further, the interface adapter plate is fixedly connected with the lower end of the anti-over-insertion limiting plate.

[0054] Further, the interface adapter plate is fixedly connected with the anti-over-insertion limiting plate through a bolt.

[0055] Further, the optical module test mechanism further comprises an anti-over-insertion limiting device, the anti-over-insertion limiting device comprises an anti-over-insertion limiting plate for limiting the insertion depth of the optical module, and the anti-over-insertion limiting plate is installed on the test board.

[0056] Further, the anti-over-insertion limiting plate is detachably fixed on the test board, the interface for plugging with the optical module is located below the anti-over-insertion limiting plate, the anti-over-insertion limiting plate is provided with a groove for inserting the optical module, and the interface is located in the groove.

[0057] Further, the anti-over-insertion limiting plate is provided with limiting portions on two sides, respectively, for slidingly cooperating with two sides of the test board or the test board fixing seat.

[0058] Further, the anti-over-insertion limiting plate is provided with a fixing hole, the test board is provided with a fixing hole corresponding to the anti-over-insertion limiting plate, and a screw is fixed on the test board fixing seat after penetrating through the fixing holes of the anti-over-insertion limiting plate and the test board.

[0059] Further, the interface adapter plate is fixedly connected with the lower end of the anti-over-insertion limiting plate.

[0060] Further, the optical module test mechanism further comprises a secondary compensation plug-and-send mechanism, the secondary compensation plug-and-send mechanism comprises a compensation power device and a compensation push plate for pushing the optical module, and the compensation power device is connected with the compensation push plate.

[0061] Further, the compensation power device adopts a three-axis cylinder, the compensation push plate is fixed on the movable plate of the three-axis cylinder, the compensation push plate is pushed by controlling the retraction of the piston rod of the three-axis cylinder, and the compensation push plate can realize compensation when there is a difference in the front and back positions of the optical module.

[0062] Further, the test mechanism includes two sets of one-to-four test stations, one of which is standby and can be selected, so that the test efficiency and the conveying efficiency are balanced when the program time is relatively long.

[0063] Further, two slide rails are symmetrically arranged on the mounting seat, a test plate is arranged on the test plate fixing seat, the test plate fixing seat is arranged above the sliding blocks of the two slide rails, the mounting seat is arranged below the guide rails of the two slide rails, and buffer tension springs are arranged on the side edges of the test plate fixing seat and the mounting seat.

[0064] Four interface adapter plates are fixed on the test plate, the design of the four interface adapter plates is based on the consideration that female interfaces are easily damaged by long-term plugging and unplugging, if all the operations of plugging and unplugging optical modules are performed on the female interfaces of the test plate, the test plate will be replaced for a long time, and the cost is relatively high. Therefore, the repeated plugging and unplugging operations are transferred to the interface adapter plates or the interface (female interface) adapter plates with simple structures. After the anti-over-plugging limiting plate and the four interface (female interface) adapter plates are assembled into an integral whole, two handle screws are arranged on the test plate and fixed on the test plate mounting seat. When the module type is switched, the anti-over-plugging limiting device is replaced in its entirety through the handle screws. Therefore, the device can be quickly switched by employees according to different types of optical modules. The structure design of the anti-over-plugging limiting plate also has a limiting function for the optical module, that is, the depth of the optical module inserted into the female interface is fixed, so that the consistency of the insertion is ensured.

[0065] Further, the rack is provided with an NG tray for placing unqualified products.

[0066] The application further discloses an optical module automatic testing method, which comprises the following steps.

[0067] The tray is sent to the taking station by the conveying mechanism;

[0068] The taking assembly clamps the optical module from the taking station and transfers the optical module to the turnover code scanning mechanism;

[0069] The turnover code scanning mechanism clamps the optical module, performs turnover code scanning, and controls the taking assembly to clamp the optical module from the turnover code scanning mechanism and transfer the optical module to the test mechanism for at least test operation.

[0070] If the test is qualified, the taking assembly is controlled to clamp the qualified optical module from the test mechanism and transfer the qualified optical module into the tray on the taking station of the conveying mechanism, and when the optical modules in the tray on the taking station are all tested, the conveying mechanism is controlled to convey the tray on the taking station to the recycling station for recycling of the tray.

[0071] If the test is unqualified, the taking assembly is controlled to clamp the unqualified optical module from the test mechanism and transfer the unqualified optical module into the NG tray.

[0072] The present application has at least the following beneficial effects:

[0073] The present application can realize multi-station position switching and automatic loading and unloading of the packaged optical module, SN code scanning and identification, switching of the optical module angle, multi-direction positioning plugging, program downloading and testing (such as ground isolation testing), and production steps of product classification.

[0074] The loading and unloading mechanism of the material bin is used to reduce the frequency of manual loading and reduce labor costs. The program downloading and testing mechanism adopts a prevention-over-plugging limiting structure, a secondary compensation plugging structure, and a multi-direction positioning buffer structure for plugging, and has high equipment stability. The fixed structure with a quick replaceable test interface is used to realize production of multiple types of packaged modules such as QSFP28, XFP, QSFP-DD on the same device, and has a wide application. The taking assembly and the turnover code scanning mechanism both adopt two sets of parallel clamping mechanisms to clamp and release materials synchronously, and then connect the two sets of clamping mechanisms in series to realize double workpiece loading and unloading, angle switching, program downloading and testing synchronization, and double efficiency.

[0075] In summary, the present application has high equipment stability, high efficiency, and a wide application, and effectively reduces the equipment cost of production. The present application can realize code scanning and SN number identification, program downloading and testing (such as ground isolation testing), and multi-functional integration, while reducing labor, improving production capacity and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0076] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0077] Figure 1 The structure diagram of the optical module automatic test equipment assembly provided by the present application is shown in the following figure.

[0078] Figure 2 A structure diagram of the pickup assembly provided for the embodiment of the present application is shown in the figure;

[0079] Figure 3 A structure diagram of the Z-axis movement mechanism provided for the embodiment of the present application is shown in the figure;

[0080] Figure 4 A structure diagram of the clamping mechanism provided for the embodiment of the present application is shown in the figure;

[0081] Figure 5 A structure diagram of the turnover code scanning mechanism provided for the embodiment of the present application is shown in the figure;

[0082] Figure 6 A structure diagram of the transfer clamping mechanism provided for the embodiment of the present application is shown in the figure;

[0083] Figure 7 A structure diagram of the test mechanism provided for the embodiment of the present application is shown in the figure;

[0084] Figure 8 A structure diagram of the test mechanism provided for the embodiment of the present application is shown in the figure;

[0085] Figure 9 A structure diagram of the test mechanism provided for the embodiment of the present application is shown in the figure;

[0086] Figure 10 A structure diagram of the feeding and discharging mechanism provided for the embodiment of the present application is shown in the figure;

[0087] Figure 11 A structure diagram of the conveying mechanism provided for the embodiment of the present application is shown in the figure;

[0088] Figure 12 A structure diagram of the feeding and discharging mechanism provided for the embodiment of the present application is shown in the figure;

[0089] Figure 13 A structure diagram of the NG tray provided for the embodiment of the present application is shown in the figure;

[0090] Figure 14 A structure diagram of the feeding and discharging mechanism provided for the embodiment of the present application is shown in the figure;

[0091] Figure 15 A structure diagram of the feeding and discharging mechanism provided for the embodiment of the present application is shown in the figure; DETAILED DESCRIPTION

[0092] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0093] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0094] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technology. Therefore, the "first", "second" can be explicitly or implicitly included one or more; In the description of the present application, unless otherwise specified, the meaning of "multiple", "several" is two or more.

[0095] Referring to Figures 1 to 13 , the present application provides an optical module automatic test equipment, comprising a rack, the rack is fixed with feeding and discharging mechanism 3, taking assembly 5, turnover scanning code mechanism 6 and test mechanism 7, the feeding and discharging mechanism 3 is used for realizing optical module automatic feeding and discharging, the turnover scanning code mechanism 6 is used for clamping, overturning optical module and reading the bar code information of optical module, the test mechanism 7 is used for testing at least optical module (also can execute the next program operation to optical module, etc.), the taking assembly 5 includes the clamping mechanism 53 for clamping optical module and the carrying mechanism for driving the clamping mechanism 53 to move, the clamping mechanism 53 of the taking assembly 5 is installed on the carrying mechanism, the moving path of the clamping mechanism 53 respectively passes through the feeding and discharging mechanism 3, the turnover scanning code mechanism 6 and the test mechanism 7, for transferring optical module between the feeding and discharging mechanism 3, the turnover scanning code mechanism 6 and the test mechanism 7, and inserting optical module into the interface of the test mechanism 7 in the prescribed direction for testing.

[0096] Further, the rack comprises a large rack 1 and a small rack 2, the top of the large rack 1 is respectively provided with a large mounting plate, the large mounting plate is provided with taking assembly 5, turnover scanning code mechanism 6, test mechanism 7 and NG tray 4, the top of the small rack 2 is provided with feeding and discharging mechanism 3, and the feeding and discharging mechanism 3 is combined and fixed on the large mounting plate.

[0097] The taking assembly 5 and the turnover code scanning mechanism 6 of the preferred embodiment both adopt two sets of parallel clamping mechanisms, which can clamp and place materials synchronously, and then realize the synchronization of double workpieces, turnover, down program and testing through the series connection of the two sets of clamping mechanisms, so that the efficiency is doubled. Of course, the taking assembly 5 and the turnover code scanning mechanism 6 can also be provided with only one set of clamping mechanism or more than two sets of clamping mechanisms.

[0098] The feeding and discharging mechanism 3 is provided with a material receiving bin 32 station and a recycling bin 33 station. The recycling bin 33 is fixed at a position corresponding to the recycling bin 33 station of the conveying mechanism 31, and the material receiving bin 32 is fixed at a position corresponding to the material receiving bin 32 station of the conveying mechanism 31.

[0099] Further, the feeding and discharging mechanism 3 comprises a conveying mechanism 31, an ejection mechanism 34 and an inlet mechanism 35. The conveying mechanism 31 is fixed with the material receiving bin 32 and the recycling bin 33 respectively. The conveying mechanism 31 is provided with a conveying plate for carrying and conveying the tray. The moving path of the conveying plate passes through the recycling bin 33, the material receiving bin 32 below and the taking station set on the conveying mechanism 31.

[0100] The ejection mechanism 34 is located below the material receiving bin 32. The ejection mechanism 34 cooperates with the material receiving bin 32 to realize the ejection of the trays in the material receiving bin 32 one by one onto the conveying plate.

[0101] The inlet mechanism 35 is located below the recycling bin 33. The inlet mechanism 35 cooperates with the recycling bin 33 to lock the trays one by one from the conveying plate into the recycling bin 33.

[0102] Further, the material receiving bin 32 comprises a material receiving bin 32 frame. The material receiving bin 32 frame is fixed on the conveying frame of the conveying mechanism 31. The material receiving bin 32 frame is provided with an inner cavity for stacking the trays. The upper end of the material receiving bin 32 frame is provided with a tray inlet. The lower end of the material receiving bin 32 frame is provided with a tray outlet. The lower end of the material receiving bin 32 frame is provided with a clamping device for clamping the lowermost tray. The ejection mechanism 34 is located below the material receiving bin 32 frame.

[0103] Further, the ejection mechanism 34 comprises a sensor, an upper ejection cylinder and a lower ejection cylinder. The sensor is used to detect whether there is a tray in the material receiving bin 32. The conveying plate is provided with a through hole for the output shaft of the upper ejection cylinder and the lower ejection cylinder to pass through. When the upper ejection cylinder is extended to the position, the output shaft of the upper ejection cylinder is fixed with a top tray plate which contacts the lowermost tray, i.e. the first tray, in the clamping position in the material receiving bin 32, thereby supporting the lowermost tray, i.e. the first tray. When the lower ejection cylinder is extended to the position and the upper ejection cylinder is retracted to the position, the first tray is lowered to contact the top tray plate fixed on the output shaft of the lower ejection cylinder, and at the same time, the second tray at the upper end of the first tray is lowered to the clamping position.

[0104] Further, the recycling bin 33 includes a recycling bin 33 frame fixed on the conveying frame of the conveying mechanism 31, which is provided with an inner cavity for stacking the feeding tray, the lower end of the recycling bin 33 frame is provided with a feeding port, the upper end of the recycling bin 33 frame is provided with a discharging port, and the lower end of the recycling bin 33 frame is provided with a tray supporting block which is connected with the connecting seat at the lower end of the recycling bin 33 frame through a pin shaft, and the tray supporting block is provided with a hinged hole for the pin shaft.

[0105] Further, the bin feeding mechanism 35 is located below the recycling bin 33 frame, which includes a bin feeding cylinder for lifting the tray upward, and the conveying plate is provided with a through hole for the output shaft of the bin feeding cylinder.

[0106] The upper end surface of the tray supporting block is a plane, and the lower end surface is an inclined surface, and when the tray supporting block is only subjected to gravity, the plane at the upper end of the tray supporting block is horizontal.

[0107] A specific embodiment of the conveying mechanism 31 is that the conveying mechanism 31 includes a small mounting plate 311, left and right side plates 312, a conveying motor 313, a conveying motor mounting plate 314, a synchronous belt 315, a synchronous belt pulley 316, a conveying slide rail 317, a conveying slide rail connecting plate 318, and a synchronous belt connecting block 319. The conveying slide rail connecting plate 318 is connected and fixed on the upper slide blocks of the two sets of conveying slide rails 317, and is connected with the synchronous belt 315 through the synchronous belt connecting block 319 to form an integral whole. The conveying mechanism 31 drives the conveying motor 313, and then drives through the synchronous belt 315 to realize the reciprocating movement of the conveying slide rail connecting plate 318 along the guide rail direction of the conveying slide rail 317. The conveying slide rail connecting plate 318 is provided with a limiting pin, the left and right side plates 312, and a space with a stroke of the limiting pin, which can accommodate a tray. When a tray is arranged in the space, the tray can reciprocate along the guide rail direction of the conveying slide rail 317.

[0108] A specific embodiment of the incoming bin 32 is that the incoming bin 32 (as shown in Figure 12 ) includes four angle aluminum 321, angle aluminum fixing seat 322, tray slide rail 323, tray cylinder 324, tray assembly fixing plate 325, and tray slide rail connecting plate 326. The tray slide rail connecting plate 326 is connected and fixed on the guide rod shaft end of the tray slide rail 323, and is also fixed on the piston rod of the tray cylinder 324. By controlling the extension and retraction of the tray cylinder 324, the slide rail connecting plate 326 slides along the guide rod axis of the tray slide rail 323, thereby realizing the functions of loading the tray when the tray cylinder extends and unloading the tray when the tray cylinder retracts.

[0109] A specific embodiment of the recycling bin 33 is that the recycling bin 33 includes four pieces of aluminum angle 321, an aluminum angle fixing seat 322, an aluminum angle connecting plate 331, four pieces of tray supporting blocks 332, tray supporting block mounting shafts 333, and supporting corner shaft mounting seats 334. The center of gravity of the tray supporting block 332 is not on the shaft center, so as to ensure that the tray supporting block 332 is parallel to the horizontal surface in a natural state only under the action of gravity. When a tray is pushed from below to a certain position, the tray supporting block 332 is pushed upward and inclined, and when the tray is continuously pushed to a certain height, the tray supporting block 332 is only subjected to gravity, so that the parallel surface of the tray supporting block is horizontal, that is, the tray is locked into the recycling bin 33, and the subsequent other trays are locked into the recycling bin 33 from below one by one.

[0110] A specific embodiment of the ejection mechanism 34 is that the ejection mechanism 34 includes an upper ejection cylinder 341, a lower ejection cylinder 342, a sensor 343, guide shafts of linear guides 344, and a tray lifting plate 345. The tray lifting plate is fixed on the piston rod of the upper ejection cylinder and the ends of the guide shafts of the two linear guides, and the tray lifting plate is lifted and lowered along the guide shafts of the linear guides by controlling the extension and retraction of the upper ejection cylinder. The stroke of the upper ejection cylinder is equal to the thickness of the tray, and when the upper and lower ejection cylinders are extended, the tray lifting plate just contacts the bottom surface of the lowest tray (which can be referred to as the first tray) in the incoming tray bin 32 under the confirmation of the sensor. When only the upper ejection cylinder is retracted, the second tray is lowered to the initial position of the first tray, and when the two tray supporting cylinders are extended at this time, the second tray becomes the lowest tray in the incoming tray bin 32. When the upper and lower ejection cylinders are retracted, the first tray is continuously lowered to the conveying slide rail connecting plate under the action of gravity, and can reciprocate along the guide direction of the conveying slide rail under the action of the limiting pin and the side plate on the conveying slide rail connecting plate.

[0111] A specific embodiment of the ejection mechanism 34 is that the ejection mechanism 34 includes an upper ejection cylinder 341, a lower ejection cylinder 342, a sensor 343, guide shafts of linear guides 344, and a tray lifting plate 345. The tray lifting plate is fixed on the piston rod of the upper ejection cylinder and the ends of the guide shafts of the two linear guides, and the tray lifting plate is lifted and lowered along the guide shafts of the linear guides by controlling the extension and retraction of the upper ejection cylinder. The stroke of the upper ejection cylinder is equal to the thickness of the tray, and when the upper and lower ejection cylinders are extended, the tray lifting plate just contacts the bottom surface of the lowest tray (which can be referred to as the first tray) in the incoming tray bin 32 under the confirmation of the sensor. When only the upper ejection cylinder is retracted, the second tray is lowered to the initial position of the first tray, and when the two tray supporting cylinders are extended at this time, the second tray becomes the lowest tray in the incoming tray bin 32. When the upper and lower ejection cylinders are retracted, the first tray is continuously lowered to the conveying slide rail connecting plate under the action of gravity, and can reciprocate along the guide direction of the conveying slide rail under the action of the limiting pin and the side plate on the conveying slide rail connecting plate.

[0112] The incoming tray bin 32 of the tray feeding and discharging mechanism 3 in the embodiment can be set to have a maximum of 20 trays each time, that is, after 20 trays are completely put into the recycling bin 33, manual feeding needs to be performed again, the interval time is more than 30 minutes, and the manual feeding frequency and labor cost are low.

[0113] Further, the conveying mechanism 31 comprises a conveying frame, a conveying power device and a conveying transmission device mounted on the conveying frame, the conveying power device is connected with the conveying transmission device, the conveying power device is used for providing power for the conveying transmission device, the conveying transmission device is connected with the conveying plate, and the conveying transmission device is used for converting the power provided by the conveying power device into linear power in the X-axis or Y-axis direction to drive the conveying plate to move in the X-axis or Y-axis direction. The conveying transmission device of the embodiment is used for converting the power provided by the conveying power device into linear power in the Y-axis direction to drive the conveying plate to move in the Y-axis direction. The conveying frame is provided with conveying sliding rails on both sides of the inner cavity, the conveying plate is in sliding fit with the conveying sliding rails, and the conveying plate is driven by the conveying transmission device to reciprocate along the conveying sliding rails.

[0114] The conveying power device can be, but is not limited to, a motor.

[0115] The conveying transmission device comprises a synchronous belt, a driving pulley and a driven pulley, the driving pulley and the driven pulley are rotatably supported on the conveying frame, the driving pulley is connected with the conveying power device for driving the driving pulley to rotate, the synchronous belt is connected with the driving pulley and the driven pulley, and the synchronous belt is connected with the conveying plate through a connecting piece.

[0116] Further, the conveying mechanism is used for driving the material clamping mechanism 53 to move in the horizontal direction and the vertical direction, is used for transferring the optical modules between the feeding and discharging mechanism 3, the turnover code scanning mechanism 6 and the testing mechanism 7, and is used for inserting the optical modules into the interface of the testing mechanism 7 in a specified direction for testing; the conveying mechanism comprises an XY-axis movement mechanism 51 and a Z-axis movement mechanism 52, the Z-axis movement mechanism 52 is fixed on the XY-axis movement mechanism 51, the Z-axis movement mechanism 52 is driven by the XY-axis movement mechanism 51 to move along the X-axis and the Y-axis, and the material clamping mechanism 53 is fixed on the Z-axis movement mechanism 52 and is driven by the Z-axis movement mechanism 52 to move along the Z-axis.

[0117] Further, the Z-axis movement mechanism 52 comprises a mounting bracket, an up-down movement sliding rail and a lifting device are fixed on the mounting bracket, the up-down movement sliding rail extends along the Z-axis direction, an up-down sliding rail adapter plate is in sliding fit connection on the up-down movement sliding rail, the up-down sliding rail adapter plate is connected with the lifting device for driving the up-down sliding rail adapter plate to move up and down, a buffer sliding rail is fixed on the up-down sliding rail adapter plate, and the buffer sliding rail is connected with the material clamping mechanism 53 (such as a material clamping mounting plate of the material clamping mechanism). For example, a first sliding rail of the buffer sliding rail is fixed on the up-down sliding rail adapter plate, a second sliding rail of the buffer sliding rail is connected with the material clamping mechanism 53 (such as a material clamping mounting plate of the material clamping mechanism), the first sliding rail and the second sliding rail of the buffer sliding rail are in sliding fit connection, and a first buffer elastic member is connected between the up-down sliding rail adapter plate and the material clamping mechanism 53. The first buffer elastic member can be a tension spring.

[0118] Further, the lifting device comprises a lifting power device and a lifting transmission device, the lifting power device is connected with the lifting transmission device, the lifting power device is used to provide power for the lifting transmission device, the lifting transmission device is connected with the up-and-down slide rail adapter plate, and the lifting transmission device is used to convert the power provided by the lifting power device into linear power along the Z-axis direction to drive the up-and-down slide rail adapter plate to move along the Z-axis direction. The lifting power device can be, but is not limited to, a motor.

[0119] Further, the lifting transmission device comprises a synchronous belt, a driving pulley and a driven pulley, the driving pulley and the driven pulley are rotatably supported on a mounting bracket, the driving pulley is connected with a motor used to drive the driving pulley to rotate, the synchronous belt is connected with the driving pulley and the driven pulley, and the synchronous belt is connected with the up-and-down slide rail adapter plate through a connecting piece.

[0120] Further, the XY-axis movement mechanism 51 adopts an XY gantry conveying mechanism 51.

[0121] The XY gantry conveying mechanism 51 controls the front-and-back conveying screw rod module 512 to realize Y-axis direction movement and controls the left-and-right conveying screw rod module 513 to realize X-axis direction movement through driving a servo motor 511, the front-and-back conveying screw rod module 512 and the left-and-right conveying screw rod module 513 are vertically arranged, thereby realizing the workpiece on the XY gantry conveying mechanism to switch the multi-station positions at the workpiece taking station of the material bin feeding and discharging mechanism 3, the NG material disc 4 device station, the turnover code scanning mechanism 6 station and the lower program and testing mechanism 7 station.

[0122] A specific embodiment of the Z-axis movement mechanism 52 is as follows: the Z-axis movement mechanism 52 (as shown in Figure 3) including clutch brake stepper motor 521, synchronous belt 522, synchronous pulley 523, up and down movement slide rail 524, buffer slide rail 525, buffer tension spring. The slider of the up and down movement slide rail 524 is provided with an up and down slide rail adapter plate 526, the up and down slide rail adapter plate 526 is provided with a buffer slide rail 525, and the buffer slide rail 525 is provided with a Z-axis movement mechanism 52. The synchronous belt 522 is connected and fixed with the up and down slide rail adapter plate 526 through a synchronous belt connecting plate 527. By driving the clutch brake stepper motor 521, the synchronous pulley 523 is controlled to rotate, and then the synchronous belt 522 is driven to realize the up and down movement of the slider of the up and down movement slide rail 524 in the Z-axis direction. The two ends of the buffer tension spring are arranged at the side of the up and down slide rail adapter plate 526 and the side of the clamping mechanism 53 respectively. When the workpiece moves downward along the Z-axis and is limited, the up and down slide rail adapter plate 526 continues to move downward, which does not affect the rotation of the clutch brake stepper motor 521, the Z-axis direction of the clamping mechanism 53 is limited to move, and the tension of the buffer tension spring increases, that is, the workpiece Z-axis direction can be buffered and limited at a fixed height in the subsequent lower program and test mechanism 7 station. To ensure the consistency of the Z-axis direction and the consistency of the plug-in and plug-out of the Z-axis direction.

[0123] Further, the clamping mechanism 53 includes a clamping power device, a cam plate and left and right workpiece clamps. The clamping power device is fixed on a clamping mounting plate. A vertical slide rail and a horizontal slide rail are also fixed on the clamping mounting plate. The cam plate is slidingly connected to the vertical slide rail. The upper end of the cam plate is connected to the output shaft of the clamping power device. The lower end of the cam plate is provided with oppositely arranged inclined surfaces. The left and right workpiece clamps are slidingly connected to the horizontal slide rail respectively. The left and right workpiece clamps are both provided with cam followers which are in contact with the inclined surfaces on the left and right sides of the cam plate respectively. When the cam plate moves downward, the left and right workpiece clamps are pressed together. The left and right workpiece clamps are provided with elastic members for moving away from each other.

[0124] The elastic member is a compression spring.

[0125] The clamping power device is a clamping air cylinder, but is not limited thereto.

[0126] A specific embodiment of the clamping mechanism 53 is that the clamping mechanism 53 (such as Figure 4) including: mounting plate 531, the mounting plate 531 is symmetrically provided with two sets of clamping cylinder 532, the two sets of clamping cylinder 532 are threaded cylinders, and the piston rod of the two sets of clamping cylinder is provided with a floating joint 533. Two sets of vertical slide rails 535 and two sets of horizontal double-block slide rails 536 are provided on the buffer slide rail adapter plate 534, and cam plates 539 are respectively provided on the two sets of vertical slide rails. A set of left and right workpiece clamps 537 is provided on the two sets of horizontal double-block slide rails 536, and compression springs are provided on the opposite sides of the left and right workpiece clamps 537, which are naturally pressed by spring force, and the left and right workpiece clamps 537 are opened. When the left and right workpiece clamps 537 are opened, the width size is greater than the maximum width of the optical module, and when combined, the size width size is less than the minimum width of the optical module, that is, the stroke can be compatible with all optical modules with a width of 12mm-19mm, so that the versatility of the equipment is stronger. Cam followers 538 are provided on the upper surfaces of the left and right workpiece clamps 537. That is, through the clamping cylinder 532, the vertical slide rail 535 and the cam follower 538 are guided to form a clamping mechanism 53 for the optical module. The clamping mechanism 53 has two sets, which can realize synchronous clamping and feeding. And the two sets of clamping mechanisms 53 are synchronized to move up and down each time, which can realize the function of doubling the number of taking (feeding) materials each time, reducing the number of taking materials by half, and doubling the efficiency.

[0127] Further, the turnover code scanning mechanism 6 includes an angle rotating mechanism 61, a transfer clamping mechanism for clamping the optical module, and a code scanning device for reading the bar code on the optical module. The transfer clamping mechanism (such as the clamping power device of the transfer clamping mechanism) is connected with the angle rotating mechanism 61 for driving it to rotate.

[0128] Each transfer clamping mechanism 62 (such as Figure 6 : This figure hides the rotating shaft 614) includes a transfer clamping power device (threaded cylinder 621), a mounting seat 624 and two clamping blocks 626. The transfer clamping power device (threaded cylinder 621) is fixed on the mounting seat 624, the mounting seat 624 is provided with a slide rail 622, the slide rail 622 is slidably connected with a block 627, the output shaft of the transfer clamping power device (threaded cylinder 621) is connected with the block 627, the mounting seat 624 is provided with a guide shaft 625, and the two clamping blocks 626 are spaced apart and slidably connected with the guide shaft 625 provided on the mounting seat 624. The clamping block 626 is provided with a through hole for the guide shaft 625 to pass through, and the rotating clamping block 627 is provided with a cam follower 628. The block 627 is provided with oppositely arranged inclined surfaces, and the two clamping blocks 626 are respectively in contact with the inclined surfaces on the left and right sides of the cam plate. The two clamping blocks 626 are driven to approach each other by the block 627. When the block 627 moves, the two clamping blocks 626 are pressed to approach each other. The two clamping blocks 626 are provided with elastic members for moving away from each other.

[0129] The transfer clamping mechanism is provided with two sets, and the distance between the two sets is equal to that of the two sets of clamping mechanisms of the Z-axis movement mechanism 52. To ensure that the two sets of workpieces are synchronously transported and rotated, the rotation efficiency is doubled.

[0130] The threaded cylinder 621 is connected with the angle rotating mechanism 61, and the threaded cylinder 621 and the mounting seat 624 are driven to rotate through the angle rotating mechanism 61.

[0131] Further, the angle rotating mechanism 61 comprises a turnover mechanism mounting plate 611 and a bearing fixing seat 612, and the bearing fixing seat 612 is provided with two sets of double bearings and a rotating motor mounting plate 613. Each of the two sets of double bearings is provided with a rotating shaft 614, the threaded cylinder 621 is arranged in the rotating shaft 614 through threaded connection, a universal air pipe joint 623 is arranged at the interface of the threaded cylinder 621, and the universal air cylinder joint 623 is arranged in the rotating shaft 614. One set of large synchronous wheels 615 is arranged on each of the two sets of rotating shafts 614, a rotating motor 616 is arranged on the turnover motor mounting plate 611, a small synchronous wheel 617 is arranged on the rotating motor 616, and the rotating motor 616 is a stepping motor. The rotating motor 616 is driven to rotate through the rotation of the stepping motor, drives the synchronous belt 618 to transmit power, simultaneously drives the two sets of large synchronous wheels 615 to rotate, and realizes the rotation of the two optical modules in multiple directions (incoming direction: the front of the optical module faces upward, code reading direction: the front of the optical module faces downward or the side, test direction: the front of the optical module faces downward). When the recognition angle is reached, the label SN code on the optical module is just aligned with the camera lens, the camera reads the code and stores the SN number, and when the test angle is reached, the front of the optical module faces downward, and the program and the test mechanism 7 are prepared for direction.

[0132] The code scanning device 63, i.e., the code reading and SN storing mechanism, comprises a camera fixing cylinder 631, the camera fixing cylinder 631 is provided with a camera mounting plate 632, and the camera mounting plate 632 is provided with a code reading camera 633. The retracted end of the camera fixing cylinder 631 corresponds to the workpiece on the right clamping mechanism for scanning and storing the SN, and the camera fixing cylinder 631 corresponds to the workpiece on the left clamping mechanism when it is extended. That is, the stroke of the cylinder is equal to the distance between the two sets of clamping mechanisms. The workstations are switched through the control of the camera fixing cylinder 631, and the function of alternately scanning the codes of the modules on the two clamping jaws is realized. The working distance of the selected camera is compatible with the product height difference within 10 mm, so as to meet the identification of labels with two different heights on the side and the front. Through code scanning, it can be judged whether the front clamping is normal, so as to judge whether to continue to run, and avoid damage caused by blind running.

[0133] Further, the testing mechanism 7 comprises a testing board and a testing board buffer fixing device 71, the testing board buffer fixing device 71 comprises a mounting base, a testing board fixing base, the testing board is provided with an interface for plugging with the optical module, the testing board is fixed on the testing board fixing base, the mounting base is provided with a sliding rail, the testing board fixing base is in sliding fit with the sliding rail, a second buffer elastic member is arranged between the testing board fixing base and the mounting base, when the testing board fixing base is only subjected to the force of the second buffer elastic member, the testing board fixing base is paused at the initial limit position, when subjected to the pushing force, the second buffer elastic member is used for providing the testing board fixing base with a pulling force which is opposite to the pushing force.

[0134] Further, the second buffer elastic member is a buffer tension spring or a compression spring.

[0135] Preferably, the second buffer elastic member adopts the compression spring 716.

[0136] Further, the optical module testing mechanism of the present application further comprises a height limiting seat 713 for limiting the optical module.

[0137] Further, the height limiting seat 713 is fixed on the anti-insertion limiting plate 722, and the anti-insertion limiting plate 722 is detachably fixed on the testing board 715.

[0138] In order to adapt to different models of optical modules, the height limiting seat 713, the anti-insertion limiting plate 722 and the interface adapter plate also need to be replaced according to the model of the optical module, preferably, the height limiting seat and the anti-insertion limiting plate are integrally formed, the interface adapter plate is fixed on the lower end of the anti-insertion limiting plate, forming an integral structure, after adopting the integral structure, it is convenient to replace the height limiting seat 713, the anti-insertion limiting plate 722 and the interface adapter plate.

[0139] Further, the testing board 715 is provided with an interface adapter plate 721, the interface adapter plate 721 is provided with an interface for plugging with the optical module, the testing board 715 is provided with an adapter socket 7151, the adapter socket 7151 is provided with an adapter interface for plugging with the interface adapter plate 721, so that the interface adapter plate 721 inserted into the adapter interface of the testing board 715 forms an electrical connection with the testing board 715, the interface adapter plate 721 is provided with a socket 7211, the socket is provided with an interface for plugging with the optical module, so that the optical module inserted into the interface of the interface adapter plate 721 forms an electrical connection with the interface adapter plate 721, and finally forms an electrical connection with the testing board 715.

[0140] Further, the optical module testing mechanism of the present application further comprises an anti-insertion limiting device, the anti-insertion limiting device comprises an anti-insertion limiting plate 722 for limiting the insertion depth of the optical module 8, and the anti-insertion limiting plate 722 is mounted on the testing board 715.

[0141] Further, the two sides of the anti-over-inserting limiting plate are respectively provided with downward extending limiting portions for slidingly cooperating with the two sides of the test board or the test board fixing seat. When the interface adapter plate 721 is inserted into the adapter interface of the test board 715, the limiting portions on the two sides of the anti-over-inserting limiting plate will slide with the two sides of the test board, so that each interface adapter plate 721 can correspond to the adapter interface of the test board 715, and the plurality of interface adapter plates 721 of the anti-over-inserting limiting plate can be simultaneously inserted into the plurality of adapter interfaces of the test board 715.

[0142] Further, the anti-over-inserting limiting plate 722 is detachably fixed on the test board 715, and the interface for plugging the optical module is located below the anti-over-inserting limiting plate 722. The anti-over-inserting limiting plate 722 is provided with a groove for inserting the optical module, and the interface is located in the groove, so that the optical module can be inserted into the interface. The groove is provided with an opening for inserting the optical module.

[0143] When the optical module is inserted into the interface, the anti-over-inserting limiting plate 722 will limit the optical module to avoid over-insertion of the optical module.

[0144] Further, the anti-over-inserting limiting plate 722 is provided with a fixing hole, and the test board 715 is provided with a fixing hole corresponding to the anti-over-inserting limiting plate 722. The screw 723 is fixed on the test board fixing seat 712 after passing through the fixing holes of the anti-over-inserting limiting plate 722 and the test board 715.

[0145] The interface adapter plate 721 is fixed at the lower end of the anti-over-inserting limiting plate 722.

[0146] The interface adapter plate 721 and the anti-over-inserting limiting plate 722 are fixedly connected by bolts.

[0147] Further, the optical module test mechanism of the present application further comprises a secondary compensation inserting and sending mechanism, which comprises a compensation power device and a compensation push plate 732 for pushing the optical module, and the compensation power device is connected with the compensation push plate 732.

[0148] One or more interface adapter plates can be arranged on the test board.

[0149] One embodiment is that four interface adapter plates and one anti-over-inserting limiting plate 722 are fixed together, and then fixed on the test board by the handle screw 723.

[0150] The test board is universal, and the interface adapter plate and the anti-over-inserting limiting plate can be replaced according to the different product interfaces. The test board can be selected according to the required test project.

[0151] The application can combine the functions of the lower program and testing through the lower machine software combination algorithm, improve the device function, and reduce the labor.

[0152] A specific embodiment of the testing mechanism 7 is that two slide rails 714 are symmetrically arranged on the mounting seat 711, a testing plate fixing seat 712 is arranged on the testing plate 715, the testing plate fixing seat 712 is arranged above the sliding blocks of the two slide rails 714, the mounting seat 711 is arranged below the guide rails of the two slide rails 714, and the side edges of the testing plate fixing seat 712 and the mounting seat 711 are provided with buffer tension springs. When only the tension spring force acts, the testing fixing seat 712 is paused at the limiting position, and when the reverse thrust acts, the micro-back buffer state of the testing fixing seat 712 is realized.

[0153] The workpiece is carried to the lower program and testing station by the workpiece taking assembly 5, the Z-axis movement mechanism 52 controls the light module to descend, the light module is in contact with the height limiting seat 713 (the upper and lower slide rails have the buffer state), and then the two light modules are inserted into the interface (i.e. the female port) at the same time through the workpiece taking assembly 5, so that the automatic insertion of the light module is realized, and when the interface (i.e. the female port) is inserted, the micro-back buffer state of the testing fixing seat is ensured, so that the whole double module is inserted in place, and damage to the hardware (such as damage of the testing plate, loosening of the shaft coupling, motor blockage, etc.) can be avoided. Through the testing interface, the state of the module (whether it is taken away) is judged, so that damage caused by blind operation is avoided.

[0154] The overall structure contains two sets of one-drag-four testing stations, one of which is standby and optional, which can ensure the balance between testing efficiency and carrying efficiency in the case of long lower program time.

[0155] The anti-over-insertion limiting device 72 includes four interface (female port) adapter plates 721, an anti-over-insertion limiting plate 722 and a handle screw 723. The interface (female port) adapter plate 721 is designed to consider that the female port is easily damaged by long-term insertion and extraction. If all operations of inserting and extracting the light module are performed on the female port of the testing plate 715, the whole testing plate will be replaced for a long time, which has a large cost. Therefore, the repeated insertion and extraction operation is transferred to the interface (female port) adapter plate 721 which has a simple structure. After the anti-over-insertion limiting plate 722 and the four interface (female port) adapter plates 721 are assembled into one body, the handle screw 723 passes through the anti-over-insertion limiting plate 722 and the testing plate 715 and is fixed on the testing plate fixing seat 712. When the module is switched to different models, the anti-over-insertion limiting device 72 is replaced as a whole through the handle screw 723. Therefore, the device can be quickly switched by the staff according to different models of the light module. The structure design of the anti-over-insertion limiting plate also has a limiting function for the light module, which limits the depth of the light module inserted into the female port, i.e. the depth of the light module inserted into the female port is fixed, so as to ensure the consistency of the insertion.

[0156] The secondary compensation inserting mechanism 73 comprises a three-axis cylinder 731 and a compensation push plate 732, the compensation push plate 732 is fixed on the movable plate of the three-axis cylinder 731, the compensation push plate 732 is pushed by controlling the retreat of the three-axis cylinder 731, when there is a difference between the front and back positions of the optical module, the compensation can be realized. And the cylinder stroke design can be suitable for the length of QSFP28, XFP, QSFP-DD and other types of packaging modules at the same time.

[0157] Further, the rack is provided with an NG tray 4 for placing unqualified products.

[0158] The NG tray 4 (such as Figure 13 ) is used to orderly place optical modules that are unqualified in the next procedure or unqualified in the isolation test, the tray design is the same as the incoming tray in the stock bin, the spacing between the No. 1 and No. 3 stations is the same as the spacing of the two sets of clamping mechanisms, the spacing with the transfer clamping mechanism is the same, and the spacing with the adjacent two burning interfaces is the same. Finally, the purpose of possible synchronous feeding and improving operation efficiency is achieved.

[0159] Embodiment two

[0160] Referring to Figure 14 and Figure 15 , the application also discloses an optical module automatic testing method, comprising the following steps:

[0161] The tray is discharged from the stock bin, and the conveying mechanism 31 sends the tray on the conveying plate to the taking station to stop;

[0162] The taking assembly 5 clamps the optical module from the taking station and transfers the optical module to the turnover code scanning mechanism 6;

[0163] The turnover code scanning mechanism 6 clamps the optical module, performs turnover code scanning, and after the code scanning identifies the barcode information, controls the taking assembly 5 to clamp the optical module from the turnover code scanning mechanism 6 and transfers the optical module to the testing mechanism 7 to perform at least testing operation (first performs next procedure operation, and then performs ground isolation test), if the testing is qualified, controls the taking assembly 5 to clamp the qualified optical module from the testing mechanism 7 and transfers the qualified optical module to the tray on the taking station of the conveying mechanism 31, when the optical modules in the tray on the taking station are all tested, controls the conveying mechanism 31 to convey the tray on the taking station to the recycling bin 33 station to recycle the tray;

[0164] If the testing is unqualified, controls the taking assembly 5 to clamp the unqualified optical module from the testing mechanism 7 and transfers the unqualified optical module to the NG tray 4.

[0165] The tray is discharged from the stock bin, and the conveying mechanism 31 sends the tray on the conveying plate to the taking station to stop;

[0166] The conveying mechanism 31 conveys the tray on the taking station to the recycling bin 33 station to recycle the tray, specifically including: the bin entry mechanism 35 cooperates with the recycling bin 33 to lock the tray on the conveying plate into the recycling bin 33 at the recycling bin 33 station.

[0167] The application realizes the production steps of automatic feeding and discharging of packaged optical modules, code scanning, angle switching, positioning and plugging, program downloading and testing (such as ground isolation testing), and product classification. The bin feeding and discharging mechanism 3 is used to reduce the number of manual feeding times and reduce labor costs. The program downloading and testing mechanism 7 adopts a prevention over-insertion limiting structure, a secondary compensation plugging structure, and a plugging multi-direction positioning buffer structure, and has high equipment stability. A fixed structure with a quick replaceable test interface is adopted to realize the production of multiple types of packaged modules such as QSFP28, XFP, QSFP-DD on the same device, and has a wide application range. The taking assembly 5 and the turnover code scanning mechanism 6 both adopt two sets of parallel clamping mechanisms, which can clamp and release materials synchronously, and then connect the two sets of clamping mechanisms in series to realize the synchronous feeding and discharging of double workpieces, angle switching, program downloading and testing, and double efficiency.

[0168] The taking assembly and the turnover code scanning mechanism both adopt two sets of parallel clamping mechanisms, which can clamp and release materials synchronously, and then connect the two sets of clamping mechanisms in series to realize the synchronous feeding and discharging of double workpieces, angle switching, program downloading and testing, and double efficiency. The turnover code scanning mechanism also adopts a code scanning mechanism and an angle rotating structure to realize the angle of the optical module at any angle, thereby realizing the functions of SN code scanning and identification (turning 90 degrees or 180 degrees) and program downloading and testing (turning 180 degrees). The program downloading and testing mechanism adopts a fixed structure with a quick replaceable test interface, so that the device can be compatible with the production of multiple types of packaged modules such as QSFP28, SFP+, XFP, QSFP-DD. The program downloading and testing mechanism also adopts a prevention over-insertion limiting structure, a secondary compensation plugging structure, and a plugging buffer structure to ensure the consistency of plugging. The bin feeding and discharging mechanism realizes the switching of the tray between the "bin entry station", "taking station", and "recycling bin station" through a servo motor control synchronous belt transmission structure, and realizes the automatic feeding and discharging function of the workpiece tray through the bin entry structure and the bin exit structure. The NG tray device is used to place optical modules that fail to pass the program downloading or testing, and the NG tray is designed in an array rectangular shape to realize the purpose of automatic and orderly classification.

[0169] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. An automatic testing device for optical modules, characterized in that: The device includes a frame on which a loading / unloading mechanism, a picking assembly, a flipping and scanning mechanism, and a testing mechanism are fixed. The loading / unloading mechanism is used to automatically load and unload optical modules. The flipping and scanning mechanism is used to clamp and flip the optical modules and read the barcode information of the optical modules. The testing mechanism is used to test at least the optical modules. The picking assembly includes a clamping mechanism for clamping the optical modules and a conveying mechanism for moving the clamping mechanism. The clamping mechanism of the picking assembly is mounted on the conveying mechanism. The moving path of the clamping mechanism passes through the loading / unloading mechanism, the flipping and scanning mechanism, and the testing mechanism, respectively, for transferring the optical modules between the loading / unloading mechanism, the flipping and scanning mechanism, and the testing mechanism. The testing mechanism includes a test board, a mounting base, and a test board fixing base. The test board is provided with an interface for inserting an optical module. The test board is fixed on the test board fixing base. The mounting base is provided with a slide rail. The test board fixing base slides with the slide rail. A buffer elastic element is provided between the test board fixing base and the mounting base. When the optical module is inserted into the interface of the test board, it provides a pushing force to the test board fixing base. The buffer elastic element provides a force opposite to the pushing force to the test board fixing base. The testing mechanism also includes an over-insertion limiting device, which includes an over-insertion limiting plate for limiting the depth of the optical module insertion interface, and the over-insertion limiting plate is detachably fixed to the testing plate. The testing mechanism also includes a secondary compensation insertion mechanism, which includes a compensation power device and a compensation push plate for pushing the optical module. The compensation power device is connected to the compensation push plate.

2. The automatic testing equipment for optical modules according to claim 1, characterized in that: The loading and unloading mechanism includes a conveying mechanism, an outgoing mechanism, and an incoming mechanism. The conveying mechanism is respectively fixed with an incoming material bin and a return bin. The conveying mechanism is equipped with a conveying plate for carrying and conveying material trays. The moving path of the conveying plate passes under the return bin, the incoming material bin, and the material picking station set on the conveying mechanism. The discharge mechanism is located below the incoming material bin. The discharge mechanism works in conjunction with the incoming material bin to discharge the material trays in the incoming material bin one by one onto the conveyor plate. The feeding mechanism is located below the recycling bin. The feeding mechanism works in conjunction with the recycling bin to lock the material trays one by one from the conveyor plate into the recycling bin.

3. The automatic testing equipment for optical modules according to claim 1, characterized in that: The conveying mechanism is used to drive the clamping mechanism to move horizontally and vertically, and to transfer the optical module between the loading / unloading mechanism, the flipping and scanning mechanism, and the testing mechanism, and to insert the optical module into the interface of the testing mechanism for testing in a specified direction; the conveying mechanism includes an XY-axis motion mechanism and a Z-axis motion mechanism, the Z-axis motion mechanism being fixed on the XY-axis motion mechanism, and driving the Z-axis motion mechanism to move along the X and Y axes through the XY-axis motion mechanism, the clamping mechanism being fixed on the Z-axis motion mechanism, and driving the clamping mechanism to move along the Z-axis through the Z-axis motion mechanism.

4. The automatic testing equipment for optical modules according to claim 3, characterized in that: The Z-axis motion mechanism includes a mounting bracket, on which are fixed upper and lower motion slide rails and a lifting device. The upper and lower motion slide rails extend along the Z-axis direction, and upper and lower slide rail adapter plates are slidably connected to the upper and lower motion slide rails. The upper and lower slide rail adapter plates are connected to the lifting device for driving the upper and lower slide rail adapter plates to move up and down. A buffer slide rail is fixed on the upper and lower slide rail adapter plates, and the buffer slide rail is connected to a clamping mechanism. A buffer tension spring is provided between the upper and lower slide rail adapter plates and the clamping mechanism.

5. The automatic testing equipment for optical modules according to claim 1, characterized in that: The clamping mechanism includes a clamping power unit, a cam plate, and left and right workpiece clamps. The clamping power unit is fixed on a clamping mounting plate, which is also fixed with a vertical slide rail and a horizontal slide rail. The cam plate is slidably connected to the vertical slide rail, and the upper end of the cam plate is connected to the output shaft of the clamping power unit. The lower end of the cam plate has oppositely arranged inclined surfaces. The left and right workpiece clamps are slidably connected to the horizontal slide rails, respectively. Each of the left and right workpiece clamps is equipped with a cam follower, which contacts and engages with the inclined surfaces on the left and right sides of the cam plate, respectively. When the cam plate moves downward, it squeezes the left and right workpiece clamps together. An elastic element is provided between the left and right workpiece clamps to keep them apart.

6. The automatic testing equipment for optical modules according to claim 1, characterized in that: The flipping and scanning mechanism includes an angle rotation mechanism, a transfer clamping mechanism for holding the optical module, and a scanning device for reading the barcode on the optical module. The transfer clamping mechanism is connected to the angle rotation mechanism for driving its rotation.

7. The automatic testing equipment for optical modules according to claim 1, characterized in that: The testing mechanism also includes a height limiting seat for limiting the position of the optical module.

8. The automatic testing equipment for optical modules according to claim 7, characterized in that: The test board is equipped with an interface adapter board, which has an interface for connecting to an optical module. The test board is also equipped with an adapter socket, which has an adapter interface for connecting to the interface adapter board, so that the interface adapter board inserted into the adapter interface of the test board forms an electrical connection with the test board. The interface adapter board is also equipped with a socket, which has an interface for connecting to an optical module, so that the optical module inserted into the interface adapter board forms an electrical connection with the interface adapter board, ultimately forming an electrical connection between the optical module inserted into the interface adapter board and the test board.

9. An automatic testing method for optical modules, characterized in that, The method employs the automated optical module testing equipment as described in any one of claims 1 to 8, and includes the following steps: Once the material tray leaves the warehouse, the conveyor mechanism will deliver the material tray to the picking station. The pickup assembly picks up the optical module from the pickup station and transfers the optical module to the flip scanning mechanism; The flip-scanning mechanism clamps the light-collecting module, performs flip-scanning, and after the barcode information is recognized, the control assembly removes the light-collecting module from the flip-scanning mechanism and transfers the light module to the testing mechanism for at least one testing operation.

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