A test ribbon machine for photoelectric sensors

Abstract

The present application relates to the field of sensor performance testing, and discloses a kind of photoelectric sensor's test braider, including workbench, inclined table and testing track, testing sorting mechanism, qualified unloading track being sequentially arranged on inclined table, qualified unloading track is equipped with turnover material placing mechanism below, and three-dimensional vision detection module is equipped on the side, and braiding packaging mechanism is equipped on workbench.The testing track is equipped with light shielding electrical testing mechanism, and the top is loaded by loading mechanism;Testing sorting mechanism realizes the shunt of qualified piece and abnormal piece;The turntable of turnover material placing mechanism is equipped with suction component, and material taking, image detection and material placing station are formed.The present application integrates multiple processes, eliminates the transfer link across equipment, shortens production cycle, improves efficiency, reduces secondary damage of photoelectric sensor;Light shielding electrical testing ensures the accuracy of dark environment testing, three-dimensional vision detection solves the detection pain point of pin coplanarity, realizes double screening, and fully guarantees product quality.

Description

Technical Field

[0001] This invention relates to the field of sensor performance testing, and in particular to a test tape and reel machine for photoelectric sensors. Background Technology

[0002] In the manufacturing process of electronic components such as semiconductor devices and photoelectric sensors, performance testing is a crucial step in ensuring product quality before shipment. Its purpose is to screen out defective products that do not meet requirements in terms of electrical performance, structural precision, and other indicators, preventing them from entering downstream assembly stages. Taking a transmissive photoelectric sensor as an example, it consists of an infrared emitting diode and a silicon phototransistor, encapsulated in a black thermoplastic housing. The silicon phototransistor only receives radiation from the infrared LED, thus avoiding interference from ambient light noise. Due to its structural characteristics, the transmitter and receiver of this transmissive photoelectric sensor are located on opposite sides of a recess. During testing, the middle of the recess must not be obstructed and testing must be conducted in a dark environment. Therefore, the industry commonly uses a gravity-fed track for performance testing of transmissive photoelectric sensors. The performance testing mechanism is integrated into the gravity-fed track. The transmissive photoelectric sensor is rotated 180° during transport within the track, with its pins facing upwards and the bottom recess facing downwards. Stable sliding is achieved through the interaction between the recess and the protruding structure on the inner wall of the track, ensuring reliable contact between the transmissive photoelectric sensor and the test probe during testing. However, because the transmissive photoelectric sensor is in a reversed posture with its pins facing upwards in the gravity-fed track, the coplanar dimensions of its pins cannot be effectively acquired and judged by three-dimensional visual inspection on the track.

[0003] Furthermore, the tape packaging of transmissive photoelectric sensors requires the sensors to be inserted into the bag opening of the carrier tape in an upright position with the groove facing upwards to ensure the accuracy of subsequent automated mounting and pin protection. However, after testing, the transmissive photoelectric sensors remain in an inverted position with the groove facing downwards. The lack of a transition mechanism to quickly flip the sensor's orientation and accurately place it into the packaging process necessitates that the testing and tape packaging processes be performed on two separate machines. This process separation not only significantly extends the production cycle and reduces overall production efficiency, but more importantly, the transfer of transmissive photoelectric sensors between the two machines is prone to collisions, friction, or contamination, leading to secondary quality problems such as pin deformation and surface damage, severely impacting product yield.

[0004] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a test tape and reel machine for photoelectric sensors, which integrates electrical testing, sorting, flipping and unloading, image detection and tape and reel packaging functions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A testing and packaging machine for photoelectric sensors includes a workbench, an inclined plate on the workbench, a test track arranged sequentially from top to bottom on the inclined plate, a test sorting mechanism and a qualified unloading track, a flipping and feeding mechanism located below the qualified unloading track, a three-dimensional vision inspection module located next to the flipping and feeding mechanism, and a packaging mechanism on the workbench for packaging the photoelectric sensors. The test track has testing stations, and the inclined plate also has a photoelectric property testing mechanism for testing the photoelectric sensors on the test track. The top of the test track is fed by a feeding mechanism, and the testing and sorting are performed. The mechanism is used to transfer photoelectric sensors that pass the electrical test to the qualified feeding track and to transfer photoelectric sensors that fail the electrical test to the test failure recovery component. The flipping feeding mechanism includes a vertical turntable and a drive mechanism for driving the turntable to rotate in an indexing manner. At least two suction components arranged in a circumferential array are provided on the front end face of the turntable, and the suction components are supplied with negative pressure through an air supply structure. A material picking station is formed directly above the turntable and connected to the qualified feeding track. An image detection station is formed on the left or right side of the turntable and connected to the three-dimensional vision detection module. A feeding station is formed directly below the turntable and connected to the tape and packaging mechanism.

[0008] As a further improvement to the above technical solution, the driving mechanism includes a central rotating shaft disposed behind the turntable and driven by the turntable, a bushing seat sleeved on the central rotating shaft and rotatably connected to the central rotating shaft, and a servo motor connected to the flange of the bushing seat. The output end of the servo motor is drivenly connected to the central shaft.

[0009] As a further improvement to the above technical solution, the air supply structure includes a vacuum friction disk sleeved on the bushing seat and tightly pressed against the back of the turntable. The vacuum friction disk has a material intake air chamber, a transfer air chamber and a discharge air chamber on its end face facing the turntable. The circumferential surface of the vacuum friction disk is provided with air inlet holes that communicate with the material intake air chamber, the transfer air chamber and the discharge air chamber respectively. The back of the turntable has air guide holes that are the same number as the material suction components and are connected to the corresponding air paths. The air guide holes switch to connect with the material intake air chamber, the transfer air chamber and the discharge air chamber as the turntable rotates relative to the vacuum friction disk.

[0010] As a further improvement to the above technical solution, a guide post facing the turntable is fixed on the bushing seat, a guide hole that cooperates with the guide post is provided on the back of the vacuum friction disk, and an elastic element that applies elastic sealing force to the vacuum friction disk is provided between the shoulder of the bushing seat and the vacuum friction disk.

[0011] As a further improvement to the above technical solution, a pressing mechanism is also included to drive the lowermost suction assembly on the turntable to descend. The suction assembly includes a mounting base fixed on the turntable, a suction tube extending vertically through the mounting base, a suction nozzle fixed at the bottom of the suction tube, and a limiting air supply cap located at the top of the suction tube. A return spring is fitted on the suction tube between the mounting base and the limiting air supply cap. A limiting clamp is provided at the bottom of the suction tube below the mounting base. An air inlet is provided at the top of the suction tube and connected to the air passage of the limiting air supply cap. An upwardly extending anti-rotation rod is provided on the limiting clamp, and an anti-rotation hole that cooperates with the anti-rotation rod is provided on the mounting base.

[0012] As a further improvement to the above technical solution, the pressing mechanism includes a pressing cylinder, a transmission arm connected to the piston rod end of the pressing cylinder, and a pressing head disposed on the transmission arm. A buffer pad is provided between the limiting clamp and the mounting base, and a retaining ring is provided at the top of the suction tube to prevent the limiting air supply cap from disengaging from the suction tube.

[0013] As a further improvement to the above technical solution, the photoelectric property testing mechanism includes a light shield, power-connecting modules located on both sides of the testing station, a testing drive mechanism, a first blocker located upstream of the power-connecting modules, and a second blocker located behind the power-connecting modules. The first blocker is used to block and allow a set number of photoelectric sensors to be transported to the testing station, and the second blocker is used to limit the photoelectric sensors on the testing track to the testing station or allow the photoelectric sensors to be transported downstream. The testing drive mechanism is used to drive the two power-connecting modules to move or reset to the side of the photoelectric sensor, so that the multiple test pins on the power-connecting modules are connected one-to-one with each pin of the photoelectric sensor to perform a power-on test on the photoelectric sensor. The testing track has a through-hole that runs from left to right at the testing station.

[0014] As a further improvement to the above technical solution, a discharge stop arm is provided in front of the output end of the qualified material feeding track, and a discharge pressure arm is provided above the output end of the qualified material feeding track. A material picking station is formed between the discharge stop arm and the discharge pressure arm. The discharge pressure arm is driven to move up and down by a discharge adjustment cylinder, and an adjustment slope is provided at the bottom of the discharge pressure arm.

[0015] As a further improvement to the above technical solution, the test sorting mechanism includes a transverse drive mechanism, a sorting conveyor track, and a sorting blocker. The sorting conveyor track is used to receive the photoelectric sensor output from the test track. The sorting blocker is used to limit the incoming photoelectric sensor within the sorting conveyor track. The transverse drive mechanism is used to drive the sorting conveyor track to dock with the qualified unloading track or the test abnormality recovery component, respectively.

[0016] As a further improvement to the above technical solution, a feeding mechanism is also included. The feeding mechanism includes a base frame, a guide rail type rodless cylinder mounted on the base frame, a lifting cylinder mounted on the upward-facing movable slider of the guide rail type rodless cylinder, a transverse telescopic cylinder mounted on the top of the lifting cylinder, a support shaft mounted on the piston rod end of the transverse telescopic cylinder, a swing rod rotatably mounted on the support shaft, and a feeding nozzle mounted downward-facing at the free end of the swing rod. The support shaft is provided with a torsion spring that limits the swing amplitude of the swing rod.

[0017] Beneficial effects:

[0018] Compared with existing technologies, the photoelectric sensor test tape machine provided by this invention integrates electrical testing, sorting, image detection, flipping, and tape taping functions onto the same workbench, replacing the traditional separate operation mode of two independent devices. This eliminates the time and steps required for transferring the transmissive photoelectric sensor D across devices, significantly shortening the production cycle and improving overall production efficiency. At the same time, it avoids collisions, friction, and contamination of the transmissive photoelectric sensor D during the transfer process, effectively reducing secondary quality problems such as pin deformation and surface damage, and greatly improving product yield.

[0019] The photoelectric performance testing mechanism is adapted to the structural characteristics of transmission photoelectric sensors, providing a dark testing environment to ensure the accuracy of electrical performance testing; the flipping and unloading mechanism adds an image detection station during the posture flipping process, enabling the 3D vision inspection module to accurately collect pin coplanarity data, solving the industry pain point that existing gravity-type tracks cannot achieve this indicator detection, realizing dual screening of electrical performance and structural accuracy, and comprehensively ensuring the quality of products leaving the factory. Attached Figure Description

[0020] Figure 1 A perspective view of the test tape-and-reel machine for the photoelectric sensor provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the photoelectric property testing mechanism provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the electrical connection module and the test drive mechanism.

[0023] Figure 4 A schematic diagram of the internal structure of the photoelectric property testing mechanism to conceal the electrical connection module and the test drive mechanism.

[0024] Figure 5 for Figure 1 A magnified view of the L region.

[0025] Figure 6 This is a schematic diagram of the tilting and feeding mechanism.

[0026] Figure 7 A 3D view of the drive mechanism and turntable.

[0027] Figure 8 This is a sectional view of the drive mechanism and the turntable.

[0028] Figure 9 This is a schematic diagram of the structure of a vacuum friction disk.

[0029] Figure 10 This is a schematic diagram of the turntable.

[0030] Figure 11 This is a schematic diagram of the material suction assembly.

[0031] Figure 12 This is a schematic diagram of the 3D vision inspection module at the image inspection station inspecting the transmissive photoelectric sensor on the flipping and unloading mechanism.

[0032] Figure 13 This is a 3D view of the feeding mechanism.

[0033] Key component symbols: 11-Workbench, 12-Slant plate, 13-Through-beam sensor, 3-Feeding mechanism, 41-Test track, 411-Light-transmitting hole, 42-Qualified unloading track, 43-Output stop arm, 44-Output pressure arm, 441-Adjusting ramp, 45-Output adjusting cylinder, 46-Third stopper, 5-Photoelectric property testing mechanism, 51-Light shield, 52-Power connection module, 53- Test drive mechanism, 54-first stopper, 55-second stopper, 61-test sorting mechanism, 62-test abnormal recovery component, 7-tilting and unloading mechanism, 71-turntable, 711-air duct, 721-central shaft, 722-shaft sleeve, 723-servo motor, 724-guide post, 725-guide hole, 726-elastic element, 73-suction component, 731-mounting base, 732-suction tube, 7 33-Suction nozzle, 734-Limit air supply cap, 735-Reset spring, 736-Limit clamp, 737-Anti-rotation rod, 738-Buffer pad, 739-Snap ring, 730-Sliding sleeve, 74-Vacuum friction disc, 741-Material intake air chamber, 742-Transfer air chamber, 743-Material discharge air chamber, 744-Air inlet, 75-Pressing mechanism, 751-Pressing cylinder, 752-Transmission arm, 753-Pressing head, 771 - Connector, 772- Air tube, 81- 3D vision inspection module, 82- Tape and reel packaging mechanism, 9- Feeding mechanism, 91- Base frame, 92- Guide rail type rodless cylinder, 93- Lifting cylinder, 94- Lateral telescopic cylinder, 95- Support shaft, 96- Swing rod, 97- Feeding nozzle, 98- Torsion spring, A- Material picking station, B- Image detection station, C- Material unloading station, D- Transmission type photoelectric sensor, E- Test station. Detailed Implementation

[0034] This invention provides a testing and taping machine for photoelectric sensors. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0035] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0036] Please see Figures 1 to 6 As shown, the present invention provides a testing and packaging machine for photoelectric sensors, including a workbench 11, an inclined plate 12 disposed on the workbench 11, a test track 41 disposed sequentially from top to bottom on the inclined plate 12, a test sorting mechanism 61 and a qualified unloading track 42, a flipping and feeding mechanism 7 disposed below the qualified unloading track 42, a three-dimensional vision inspection module 81 disposed next to the flipping and feeding mechanism 7, and a packaging mechanism 82 disposed on the workbench 11 for packaging a transmissive photoelectric sensor D. The test track 41 is provided with a test station, and the inclined plate 12 is also provided with a photoelectric property testing mechanism 5 for testing the transmissive photoelectric sensor D on the test track 41. The top of the test track 41 is fed by a feeding mechanism 3. The test sorting mechanism 61 is used to transfer the transmissive photoelectric sensor D that has passed the electrical test to the qualified unloading track 42 and to transfer the transmissive photoelectric sensor D that has failed the electrical test to the test failure recovery component 62. The flipping and unloading mechanism 7 includes a vertical turntable 71 and a drive mechanism for driving the turntable 71 to rotate in an indexing manner. At least two suction components 73 arranged in a circular array are provided on the front end surface of the turntable 71 and the suction components 73 are supplied with negative pressure through an air supply structure. A material picking station A is formed directly above the turntable 71 and is connected to the qualified unloading track 42. An image detection station B is formed on the left or right side of the turntable 71 and is connected to the three-dimensional vision detection module 81. A material unloading station C is formed directly below the turntable 71 and is connected to the tape and packaging mechanism 82.

[0037] The specific working process is as follows: The feeding mechanism 3 transports the transmissive photoelectric sensor D to be tested to the test track 41 above the inclined plate 12. The transmissive photoelectric sensor D maintains a 180° reversed posture (pins facing up and bottom groove facing down) in the test track 41, and achieves stable sliding through the cooperation of the groove and the test track 41, which provides a guarantee for subsequent testing and probe contact.

[0038] When the transmissive photoelectric sensor D slides down to the test station on the test track 41, the photoelectric property testing mechanism 5 on the inclined plate 12 forms a closed dark environment to avoid ambient light interference (adapting to the structural characteristics of the transmissive photoelectric sensor D), and at the same time completes the electrical performance test to determine whether the transmissive photoelectric sensor D meets the electrical performance requirements.

[0039] The testing and sorting mechanism 61 performs a diversion action based on the electrical test results: it transfers the electrically abnormal transmission photoelectric sensor D to the test abnormality recovery component 62 to quickly remove defective products; and it transfers the electrically qualified transmission photoelectric sensor D to the qualified unloading track 42 for continuous conveying to subsequent processes.

[0040] The qualified feeding track 42 accurately transports the qualified transmissive photoelectric sensor D to the material picking station A of the flipping feeding mechanism 7. The suction component 73 located directly above the turntable 71 forms a negative pressure through the air supply structure to stably adsorb the transmissive photoelectric sensor D. The drive mechanism drives the turntable 71 to rotate 90°, which in turn drives the adsorbed transmissive photoelectric sensor D into the image detection station B. The three-dimensional vision detection module 81 performs three-dimensional data acquisition and accuracy judgment on the coplanarity of the pins of the transmissive photoelectric sensor D.

[0041] Turntable 71 continues to rotate 90° in increments. During this process, turntable 71 completes a 180° rotation, causing the transmissive photoelectric sensor D to switch from a reversed position (groove facing down) to a positive position (groove facing up). The qualified transmissive photoelectric sensor D, which has completed detection and position flipping, is then transported to the unloading station C. The air supply structure cuts off the negative pressure, and the transmissive photoelectric sensor D accurately falls into the carrier bag opening of the tape packaging mechanism 82. The tape packaging mechanism 82 completes the subsequent packaging operation, meeting the requirements of automated mounting for the position and pin protection of the transmissive photoelectric sensor D.

[0042] Compared with existing technologies, the test and taping machine for the transmissive photoelectric sensor D provided by this invention integrates electrical testing, sorting, image detection, flipping, and taping functions onto the same workbench 11, replacing the traditional separate operation mode of two independent devices. This eliminates the time and steps required for transferring the transmissive photoelectric sensor D across devices, significantly shortening the production cycle and improving overall production efficiency. At the same time, it avoids collisions, friction, and contamination of the transmissive photoelectric sensor D during the transfer process, effectively reducing secondary quality problems such as pin deformation and surface damage, and greatly improving product yield.

[0043] The photoelectric performance testing mechanism 5 is adapted to the structural characteristics of the transmissive photoelectric sensor D, providing a dark testing environment to ensure the accuracy of electrical performance testing; the flipping and unloading mechanism 7 adds an image detection station B during the posture flipping process, enabling the three-dimensional vision inspection module 81 to accurately collect pin coplanarity data, solving the industry pain point that the existing gravity track cannot achieve this indicator detection, realizing dual screening of electrical performance and structural accuracy, and comprehensively ensuring the quality of products leaving the factory.

[0044] The feeding mechanism 3 can be a tubular feeding mechanism or a vibratory feeder feeding mechanism. Those skilled in the art can refer to the existing technology for specific settings, and the specific structure will not be elaborated here.

[0045] Specifically, the photoelectric property testing mechanism 5 includes a light shield 51, power-connecting modules 52 located on both sides of the testing station, a test drive mechanism 53, a first blocker 54 located upstream of the power-connecting modules 52, and a second blocker 55 located behind the power-connecting modules 52. The first blocker 54 is used to block and allow a set number of transmissive photoelectric sensors D to be transported to the testing station. The second blocker 55 is used to limit the transmissive photoelectric sensors D on the test track 41 to the testing station or allow the transmissive photoelectric sensors D to be transported downstream. The test drive mechanism 53 is used to drive the two power-connecting modules 52 to move or reset to one side of the transmissive photoelectric sensor D, so that the multiple test pins on the power-connecting modules 52 are respectively connected one-to-one with the pins of each transmissive photoelectric sensor D to perform a power-on test on the transmissive photoelectric sensor D. The test track 41 has a through-hole 411 that runs from left to right at the testing station E.

[0046] Before testing, the light shield 51 remains closed, forming a closed testing space that completely isolates external ambient light without requiring any additional opening or closing action; the second blocker 55 is normally in the raised state, forming a fixed limit from the downstream side of the testing station, providing a basis for positioning the transmissive photoelectric sensor D; the first blocker 54 is in the raised blocking state, intercepting the transmissive photoelectric sensor D to be tested upstream of the power-connecting module 52, preventing it from entering the testing station E in a disorderly manner.

[0047] When the test process is started, the first blocker 54 descends and releases its obstruction according to the preset program (such as allowing one or more items to pass at a time), allowing a set number of transmissive photoelectric sensors D to slide down along the test track 41. The transmissive photoelectric sensors D slide smoothly to the test station under the action of gravity. Since the second blocker 55 is already in the raised limit state, it is directly blocked and precisely limited within the test station. With the guide structure of the test track 41 (such as the groove and the track protrusion matching), it is ensured that the transmissive photoelectric sensors D have a stable posture and fixed position, and the posture with the pins facing upwards is adapted to the height of the test probe of the power-connecting module 52.

[0048] After the transmissive photoelectric sensor D is positioned, the light shield 51 is normally closed to isolate ambient light and create a dark testing environment, completely avoiding interference from ambient light on the signal transmission of the infrared emitting diode and silicon phototransistor. At the same time, the through-hole 411 on the test track 41 at the test station ensures that the middle area of ​​the groove of the transmissive photoelectric sensor D is unobstructed, and the light from the transmitting end and the receiving end can be transmitted smoothly. Then the test drive mechanism 53 is started, driving the power connection modules 52 on both sides of the test station E to move smoothly towards the transmissive photoelectric sensor D, so that the multiple test pins on the power connection module 52 are precisely connected one-to-one to the pins of each transmissive photoelectric sensor D. After the power connection module 52 is connected to the test power supply, it completes the detection of electrical performance indicators (such as conduction sensitivity, signal transmission stability, etc.) and provides real-time feedback of the test results.

[0049] After the test is completed, the test drive mechanism 53 drives the power-connecting module 52 to reverse reset, and the test probe separates from the pin of the transmissive photoelectric sensor D. If the transmissive photoelectric sensor D passes the test, the second blocker 55 descends to release the limit, and the qualified transmissive photoelectric sensor D slides down along the test track 41 and the test sorting mechanism 61 to the qualified unloading track 42 and enters the subsequent process. If the test is abnormal, the test sorting mechanism 61 is ready to intercept the abnormal transmissive photoelectric sensor D, and then the second blocker 55 descends to release the limit, so that the abnormal transmissive photoelectric sensor D slides from the test track 41 into the test sorting mechanism 61 and is then transferred to the test abnormal recovery component 62.

[0050] Furthermore, the test sorting mechanism 61 includes a transverse drive mechanism, a sorting conveyor track, and a sorting blocker. The sorting conveyor track is used to receive the transmissive photoelectric sensor D output by the test track 41. The sorting blocker is used to limit the incoming transmissive photoelectric sensor D within the sorting conveyor track. The transverse drive mechanism is used to drive the sorting conveyor track to dock with the qualified unloading track 42 or the test abnormality recovery component 62, respectively.

[0051] When the equipment is running normally, the test sorting mechanism 61 is in the initial standby state: the upper end (input end) of the sorting conveyor track is precisely aligned with the output end of the test track 41, and the lower end (output end) is connected with the input end of the qualified unloading track 42, forming a straight channel between the test track 41, the sorting conveyor track and the qualified unloading track 42; at this time, the sorting blocking mechanism is in the released state (no limit), providing a channel for the unobstructed sliding of qualified products.

[0052] When the photoelectric property testing mechanism 5 provides feedback that the transmission photoelectric sensor D has passed the test, the second blocker 55 downstream of the test track 41 descends to release the sensor. Under the action of gravity, the qualified transmission photoelectric sensor D slides along the test track 41 into the sorting conveyor track. Since the sorting conveyor track remains connected to the qualified unloading track 42 and the sorting blocking mechanism does not limit the movement, the transmission photoelectric sensor D does not need to stop and can slide smoothly along the sorting conveyor track into the qualified unloading track 42, continuing to flow to the flipping and unloading mechanism 7, thus realizing the continuous conveying of qualified products.

[0053] When the photoelectric property testing mechanism 5 reports an abnormality in the transmission photoelectric sensor D, the sorting blocking mechanism quickly rises to limit the abnormal transmission photoelectric sensor D that has just slid into the sorting conveyor track, preventing it from continuing to slide into the qualified unloading track 42 due to inertia, thus achieving immediate interception of the abnormal transmission photoelectric sensor D. The lateral drive mechanism starts, driving the entire sorting conveyor track to move laterally, causing the lower end (output end) of the sorting conveyor track to disengage from the qualified unloading track 42 and precisely switch to align with the input end of the test abnormality recovery component 62; the sorting blocking mechanism descends to release the limit, and the abnormal transmission photoelectric sensor D slides into the test abnormality recovery component 62 under the action of gravity, completing the directional recovery of defective products; after the abnormal transmission photoelectric sensor D is transported, the lateral drive mechanism drives the sorting conveyor track to move laterally in the opposite direction, resetting to the initial state (upper end connected to the test track 41, lower end connected to the qualified unloading track 42), and the sorting blocking mechanism simultaneously returns to the released state, waiting to receive the next tested transmission photoelectric sensor D, ensuring that the qualified product transport process is not affected.

[0054] The test abnormality recovery component 62 specifically includes several recovery pipes arranged in parallel. The transverse drive mechanism specifically includes a mounting frame and a transverse drive motor, a first pulley, a second pulley, and a transmission belt mounted on the mounting frame. The transmission belt is respectively wound around the first pulley and the second pulley. The transverse drive motor is driven by the first pulley. The inclined plate 12 is provided with a transversely extending guide rail. The sorting conveyor track is connected to the guide rail through a slider. The sorting conveyor track is fixed to the transmission belt. Driven by the transverse drive motor, the sorting conveyor track is respectively connected to the qualified unloading track 42 or the corresponding recovery pipe in the translation direction.

[0055] The qualified unloading track 42 is equipped with a third blocker 46. The third blocker 46 can flexibly switch between blocking and releasing states according to the working status of the picking station A (such as whether the suction component 73 has completed adsorption, and whether the previous transmissive photoelectric sensor D has left the picking station A). This avoids the situation where multiple qualified transmissive photoelectric sensors D are blocked and squeezed against each other due to continuous sliding due to gravity. It ensures that the picking station A can only accommodate one transmissive photoelectric sensor D at a time, providing an independent working space for the posture correction of the unloading stop arm 43 and the pressure arm, and the accurate adsorption of the suction component 73. This also eliminates the positioning deviation or adsorption failure caused by interference from multiple transmissive photoelectric sensors D.

[0056] Furthermore, a discharge stop arm 43 is provided in front of the output end of the qualified discharge track 42, and a discharge pressure arm 44 is provided above the output end of the qualified discharge track 42. The discharge stop arm 43 and the discharge pressure arm 44 form a material picking station A. The discharge pressure arm 44 is driven to move up and down by the discharge adjustment cylinder 45, and the bottom of the discharge pressure arm 44 is provided with an adjustment slope 441.

[0057] The drive mechanism of the flipping and feeding mechanism 7 first drives the turntable 71 to rotate in an indexing manner, accurately conveying one of the suction components 73 to the material picking station A (the area between the material discharge stop arm 43 and the material discharge pressure arm 44); at this time, the suction component 73 is in a standby state, and the air supply structure does not provide negative pressure to avoid premature adsorption of foreign objects. At the same time, the suction surface is precisely aligned with the reference surface of the material picking station A, waiting for the arrival of the transmissive photoelectric sensor D.

[0058] After being diverted by the testing and sorting mechanism 61, the qualified transmission photoelectric sensor D smoothly slides down along the qualified unloading track 42 (adapted to the inclined design of the inclined plate 12) under the action of gravity. After leaving the qualified unloading track 42, it continues to slide to the preset picking station A and directly enters the adsorption range of the ready suction component 73.

[0059] When the transmissive photoelectric sensor D slides to the material picking station A, the discharge positioning arm 43 in front of the output end immediately blocks it, restricting the transmissive photoelectric sensor D from continuing to move forward and preventing it from sliding out of the material picking area. At the same time, the discharge positioning cylinder 45 is activated, driving the discharge positioning pressure arm 44 to move downward. The positioning inclined surface 441 at the bottom of the discharge positioning pressure arm 44 makes flexible contact with the top of the transmissive photoelectric sensor D (reversed posture: pins facing up and grooves facing down). Through the guiding effect of the inclined surface, the left and right offset, tilt and other posture deviations of the transmissive photoelectric sensor D are quickly corrected to ensure that the center of the transmissive photoelectric sensor D is aligned with the adsorption center of the suction component 73, and the pin arrangement and groove position maintain a uniform standard posture.

[0060] After the posture correction is completed, the air supply structure provides negative pressure to the suction component 73, which immediately adsorbs the transmissive photoelectric sensor D, ensuring stable gripping without detachment. Subsequently, the discharge adjustment cylinder 45 drives the discharge positioning arm 44 to reset upward, releasing the downward pressure limit and avoiding interference with the movement of the suction component 73. The drive mechanism then drives the turntable 71 to rotate, causing the suction component 73, which is adsorbing the transmissive photoelectric sensor D, to leave the picking station A and enter the subsequent image detection station B. At the same time, the next suction component 73 on the turntable 71 moves synchronously to the picking station A, waiting for the next qualified transmissive photoelectric sensor D, thus realizing continuous material picking operation.

[0061] It should be noted that the inclined plate 12 is equipped with multiple sets of through-beam sensors 13, which are used to detect whether there is a transmission photoelectric sensor D at a specific position of the test track 41 and the qualified unloading track 42, thereby feeding back a signal to the control system to control the operation of the photoelectric property testing mechanism 5 and the unloading adjustment cylinder 45.

[0062] Specifically, the drive mechanism includes a central rotating shaft 721 located behind and driven by the turntable 71, a bushing 722 fitted onto and rotatably connected to the central rotating shaft 721, and a servo motor 723 flange-connected to the bushing 722. The output end of the servo motor 723 is connected to the central shaft via a key connection. The central rotating shaft 721 is fixedly connected to the turntable 71, thereby driving the turntable 71, air pipe 772, and suction assembly 73 to rotate synchronously. The flange connection of the servo motor 723 ensures that the motor body, bushing 722, and vacuum friction disk 74 remain relatively stationary, with only the central rotating shaft 721, turntable 71, and suction assembly 73 rotating. The servo motor 723 has high control precision, meeting the requirements for precise indexing.

[0063] Specifically, the air supply structure includes a vacuum friction disk 74 sleeved on the bushing seat 722 and tightly pressed against the back of the turntable 71. The vacuum friction disk 74 has a material intake air chamber 741, a transfer air chamber 742 and a discharge air chamber 743 on its end face facing the turntable 71. The circumferential surface of the vacuum friction disk 74 is provided with air inlet holes 744 that communicate with the material intake air chamber 741, the transfer air chamber 742 and the discharge air chamber 743 respectively. The back of the turntable 71 has the same number of air guide holes 711 as the suction assembly 73 and corresponding air passages connected to them. The air guide holes 711 switch to dock with the material intake air chamber 741, the transfer air chamber 742 and the discharge air chamber 743 as the turntable 71 rotates relative to the vacuum friction disk 74.

[0064] During operation, the servo motor 723 drives the central rotating shaft 721 and the vertical turntable 71 to rotate in an indexing manner. When a certain suction component 73 on the front face of the turntable 71 rotates with the turntable 71 to the material picking station A, the air guide hole 711 on the back of the turntable 71 corresponding to the suction component 73 is exactly aligned with the material picking air chamber 741 of the vacuum friction disk 74. The material picking air chamber 741 is connected to a negative pressure air source through the air inlet 744, which makes the suction component 73 generate a stable negative pressure, accurately adsorbing the reverse attitude transmissive photoelectric sensor D output by the gravity-type track (the pins of the transmissive photoelectric sensor D face upwards and the groove faces downwards), thus completing the reliable gripping of the transmissive photoelectric sensor D.

[0065] The servo motor 723 continues to drive the turntable 71 to rotate. The suction component 73 adsorbs the transmissive photoelectric sensor D and moves in a circular motion synchronously with the turntable 71 (because the turntable 71 is vertically arranged, the transmissive photoelectric sensor D flips around the central axis 721 during rotation). At this time, the air guide hole 711 disengages from the material picking air chamber 741 as the turntable 71 rotates and switches to the transfer air chamber 742 of the vacuum friction disk 74. The transfer air chamber 742 continuously provides a stable negative pressure to ensure that the transmissive photoelectric sensor D is always stably adsorbed by the suction component 73 during the flipping process, avoiding posture deviation or falling. The transmissive photoelectric sensor D completes a 180° posture change with the suction component 73, that is, the transmissive photoelectric sensor D changes from a reverse posture of "pins facing up and grooves facing down" to an upright posture of "pins facing down and grooves facing up".

[0066] When the turntable 71 rotates the transmissive photoelectric sensor D to the feeding station C (where it docks with the carrier belt of the tape packaging machine), the air guide hole 711 switches again, docking with the feeding air chamber 743 of the vacuum friction disc 74. The feeding air chamber 743 cuts off the negative pressure through the air inlet 744, the suction force of the suction component 73 disappears, and the transmissive photoelectric sensor D falls precisely into the carrier bag opening of the tape packaging machine in an upright position (groove facing up, pins facing down).

[0067] Since the turntable 71 is equipped with at least two circumferentially arranged suction components 73, when one suction component 73 finishes discharging the material, the other suction component 73 has synchronously rotated to the picking station A to start grabbing the transmissive photoelectric sensor D. Through the cyclic indexing rotation of the turntable 71 and the alternating docking of the three air chambers on the vacuum friction disk 74, continuous operation of picking, flipping and discharging of materials is realized.

[0068] Understandably, the vacuum friction disc 74 is mounted on the fixed bushing seat 722, and its three air inlets 744 (corresponding to the material intake air chamber 741, the transfer air chamber 742, and the discharge air chamber 743, respectively) are directly connected to the external air source pipe. Since both the bushing seat 722 and the vacuum friction disc 74 are fixed and do not rotate, the external air pipe 772 always remains stationary, without any rotation or displacement, and there is no basis for entanglement.

[0069] The air duct 711 on the back of the turntable 71 is connected to the air passage of the suction assembly 73 through the connector 771 and a section of air pipe 772. The air pipe 772 is an internal connecting component of the turntable 71 and the suction assembly 73. The three are relatively stationary and rotate synchronously without interference from external pipelines. The air pipe 772 only makes a circular motion along a fixed trajectory, without any risk of entanglement, forming a dynamic air passage unit that rotates synchronously but has no internal interference.

[0070] The only external connection point of the dynamic air circuit unit is the air guide hole 711 on the back of the turntable 71. As the turntable 71 rotates, the air guide hole 711 makes a circular motion around the central axis 721, and successively connects with the material intake air chamber 741, the transfer air chamber 742, and the discharge air chamber 743 on the fixed vacuum friction disk 74. This means that the dynamic air circuit unit periodically obtains air from the fixed static air circuit through the air guide hole 711, without the need for external pipelines to follow the rotation of the turntable 71, thus avoiding wiring tangling at the source.

[0071] In this embodiment, both the material intake air chamber 741 and the material discharge air chamber 743 are circular holes, and the transfer air chamber 742 is located in an arc groove and is located on one side of the material intake air chamber 741 and the material discharge air chamber 743.

[0072] The qualified unloading track 42 transports the reverse-position transmissive photoelectric sensor D (pins facing up, groove facing down) to the picking station A directly above. The control system instructs the servo motor 723 to keep the turntable 71 stationary. The picking air chamber 741 is connected to the negative pressure air source through the air inlet 744. The airflow passes sequentially through the static air source, the picking air chamber 741, the air guide hole 711, and the air pipe 772 to the suction assembly 73 to form a stable negative pressure. The suction assembly 73 accurately adsorbs the transmissive photoelectric sensor D, completing the picking process. The diameter of the circular picking air chamber 741 matches the air guide hole 711 to ensure accurate air path connection and no leakage.

[0073] After material handling is completed, the servo motor 723 drives the turntable 71 to rotate clockwise (or counterclockwise), causing the suction assembly 73 and the adsorbed transmissive photoelectric sensor D to flip downwards synchronously. At this time, the air guide hole 711 disengages from the circular hole-shaped material handling air chamber 741 as the turntable 71 rotates and enters the arc-shaped transfer air chamber 742 on one side. Since the transfer air chamber 742 is an arc-shaped groove structure, its circumferential coverage area corresponds exactly to the flipping path from the material handling station A to the material discharging station C. The air guide hole 711 remains in contact with the transfer air chamber 742 throughout the entire flipping process. The transfer air chamber 742 continuously provides negative pressure to ensure that the transmissive photoelectric sensor D is not loosened and its posture is not shifted. At the same time, the circumferential anti-rotation of the guide post 724 fixes the vacuum friction disk 74, and the elastic element 726 compensates for the small vibrations during rotation, maintaining the sealing surface contact.

[0074] It is important to emphasize that, since the transition area between the circular orifice-shaped material intake air chamber 741 and the arc-shaped transfer air chamber 742 is smaller than the area of ​​the air guide hole 711, and the transition area between the circular orifice-shaped material discharge air chamber 743 and the arc-shaped transfer air chamber 742 is smaller than the area of ​​the air guide hole 711, even if the turntable 71 rotates to the transition area, the air guide hole 711 will be connected to the material intake air chamber 741 and / or the transfer air chamber 742, and there will be no negative pressure interruption, ensuring that the suction nozzle 733 assembly continuously sucks up the transmissive photoelectric sensor D.

[0075] After the turntable 71 rotates 180°, the suction component 73 reaches the discharge station C directly below (precisely docking with the bag opening of the tape packaging machine), and the servo motor 723 receives the position feedback signal and stops precisely. At this time, the air guide hole 711 disengages from the arc-shaped transfer air chamber 742 and precisely aligns with the circular discharge air chamber 743 directly below the vacuum friction disk 74. The discharge air chamber 743 cuts off the negative pressure, the suction force disappears, and the transmission photoelectric sensor D falls vertically into the bag opening of the tape in an upright position (groove facing up, pins facing down), completing the discharge.

[0076] After the material is unloaded, the servo motor 723 continues to drive the turntable 71 to rotate. The suction component 73 is reset with the turntable 71 (either via the other side of the transfer air chamber 742 or directly, depending on the number of suction components 73). At the same time, the next suction component 73 rotates to the material picking station A directly above and begins to adsorb the transmissive photoelectric sensor D, realizing a continuous automated cycle of material picking, 180° flipping, and unloading.

[0077] Specifically, the bushing seat 722 is fixed with a guide post 724 facing the turntable 71, the back of the vacuum friction disk 74 is provided with a guide hole 725 that cooperates with the guide post 724, and an elastic element 726 that applies elastic sealing force to the vacuum friction disk 74 is provided between the shoulder of the bushing seat 722 and the vacuum friction disk 74.

[0078] During assembly, the non-circular guide post 724 on the bushing seat 722 is precisely inserted into the matching guide hole 725 on the back of the vacuum friction disk 74: on the one hand, the radial fit between the guide post 724 and the guide hole 725 ensures that the vacuum friction disk 74 and the turntable 71 are coaxial (center coincident), so that the material taking air chamber 741, the transfer air chamber 742 and the discharge air chamber 743 are precisely aligned with the air guide hole 711 of the turntable 71 in the circumferential direction; on the other hand, the non-circular fit structure directly restricts the circumferential rotation of the vacuum friction disk 74, avoiding angular displacement due to air pressure, friction of the turntable 71 and other factors, ensuring that the circumferential position of the air chamber and the air guide hole 711 is always fixed, without the need for additional positioning parts.

[0079] The elastic element 726 (such as a compression spring) generates a continuous axial elastic force, which presses the vacuum friction disk 74 tightly against the back of the turntable 71 to form a reliable sealing surface and ensure the air passage is sealed.

[0080] The drive mechanism drives the turntable 71 to rotate, and the circumferential limiting effect of the guide post 724 keeps the vacuum friction disk 74 fixed (without circumferential offset), ensuring that the material picking air chamber 741 and the air guide hole 711 are precisely aligned; the axial elastic force of the elastic element 726 maintains the sealing surface fit, the negative pressure is stably transmitted through the air path, and the material suction assembly 73 reliably adsorbs the transmissive photoelectric sensor D.

[0081] When the turntable 71 rotates, the guide post 724 continuously restricts the circumferential rotation of the vacuum friction disk 74, preventing the vacuum friction disk 74 from moving due to the friction between the mating surfaces of the turntable 71 and the vacuum friction disk 74, ensuring that the air guide hole 711 smoothly transitions from the intermediate air chamber 742 and the negative pressure remains stable; the elastic element 726 compensates for machining or assembly deviations and minor vibrations, prevents gaps from appearing on the sealing surface, and ensures that the transmissive photoelectric sensor D is adsorbed without loosening.

[0082] The circumferential limiting and radial positioning of the guide post 724 work together to ensure precise docking between the discharge air chamber 743 and the air guide hole 711. The elastic element 726 maintains the seal, the negative pressure supply and cut-off are quickly transmitted, and the transmission photoelectric sensor D accurately discharges the material. The vacuum friction disk 74 has no circumferential rotation or radial offset, and the air path switching and station conversion are completely synchronized.

[0083] After long-term operation, even if slight wear occurs on the contact surface between the vacuum friction disk 74 and the turntable 71, the elastic element 726 will automatically release the pre-compression amount, pushing the vacuum friction disk 74 to move towards the turntable 71 to compensate for the wear and maintain the sealing pressure. At the same time, the circumferential limit and radial positioning of the guide post 724 will always keep the position of the vacuum friction disk 74 fixed, ensuring that the air circuit docking accuracy does not decrease with wear.

[0084] Since the carrier tape of the tape packaging machine is located below the turntable 71, in order to ensure that the transmissive photoelectric sensor D is smoothly embedded into the bag opening of the carrier tape, the tape packaging machine for testing the photoelectric sensor also includes a pressing mechanism 75 for driving the lowermost suction assembly 73 on the turntable 71 to descend. The suction assembly 73 includes a mounting base 731 fixed on the turntable 71, a suction tube 732 extending vertically through the mounting base 731, a suction nozzle 733 fixed at the bottom end of the suction tube 732, and a limiting air supply cap 734 set at the top of the suction tube 732. A return spring 735 is sleeved on the suction tube 732 between the mounting base 731 and the limiting air supply cap 734. The bottom of the suction tube 732 is provided with a limiting clamp 736 located below the mounting base 731. The top end of the suction tube 732 is provided with an air inlet and connected to the air passage of the limiting air supply cap 734.

[0085] Servo motor 723 drives turntable 71 to rotate, and a certain suction component 73 precisely stops at the material picking station A directly above. The air inlet at the top of its suction tube 732 is sealed and connected to the air guide hole 711 of turntable 71 through the limiting air supply cap 734. The air guide hole 711 is synchronously aligned with the circular material picking air chamber 741 of vacuum friction disk 74. The material picking air chamber 741 is connected to a negative pressure air source, and the suction nozzle 733 of the suction component 73 located at material picking station A generates negative pressure. At this time, the return spring 735 is in a naturally extended state, and the suction tube 732 maintains its initial height under the elastic force of the return spring 735. The suction nozzle 733 adheres to the reverse posture transmissive photoelectric sensor D (pins facing up, grooves facing down) output by the gravity-type track, and the transmissive photoelectric sensor D is precisely adsorbed by the negative pressure.

[0086] Servo motor 723 drives turntable 71 to rotate clockwise. The suction assembly 73 adsorbs and synchronously flips the transmissive photoelectric sensor D. The air guide hole 711 disengages from the material picking air chamber 741 and enters the arc-shaped transfer air chamber 742. The transfer air chamber 742 continuously provides negative pressure to ensure stable suction force of the suction nozzle 733. At the same time, the preload of the return spring 735 keeps the suction tube 732 at a fixed stroke (limiting clamp 736 is in contact with the lower end face of the mounting base 731 for limitation), preventing the suction tube 732 from moving vertically under the action of centrifugal force during flipping. The posture of the transmissive photoelectric sensor D remains stable at all times.

[0087] When the suction assembly 73 rotates to the lower feeding station C (aligned with the carrier belt), the servo motor 723 stops precisely, and the air guide hole 711 aligns with the circular feeding air chamber 743. At this time, the pressing mechanism 75 is activated, specifically driving the lowermost suction assembly 73: the actuator of the pressing mechanism 75 presses against the top of the limiting air supply cap 734, overcoming the elastic force of the return spring 735, and pushes the suction tube 732 to extend vertically downward along the mounting base 731. The suction nozzle 733, along with the transmissive photoelectric sensor D, descends synchronously until the suction nozzle 733 approaches the opening of the carrier bag.

[0088] When the negative pressure in the discharge chamber 743 is cut off, the suction force of the suction nozzle 733 disappears, and the transmissive photoelectric sensor D falls precisely into the carrier bag opening from a very short distance in an upright position (groove facing up, pin facing down), avoiding posture deviation or pin collision caused by excessive falling height.

[0089] After the material is discharged, the pressing mechanism 75 retracts, the return spring 735 releases its elastic force, pushing the suction tube 732 upward to reset, and the limiting clamp 736 re-fits and limits the lower end face of the mounting base 731, restoring the suction assembly 73 to its initial height. Simultaneously, the servo motor 723 drives the turntable 71 to continue rotating, and the suction assembly 73 leaves the discharge station C. The next suction assembly 73 then arrives at the picking station A, beginning the next cycle.

[0090] Furthermore, the limiting clamp 736 is provided with an upwardly extending anti-rotation rod 737, and the mounting base 731 is provided with an anti-rotation hole that cooperates with the anti-rotation rod 737. The anti-rotation rod 737 and the anti-rotation hole restrict the circumferential rotation of the suction tube 732, so that when picking up materials, the circumferential posture of the suction nozzle 733 is fixed, accurately fitting the adsorption surface of the transmissive photoelectric sensor D, avoiding adsorption offset caused by the deflection of the suction nozzle 733; when flipping, the transmissive photoelectric sensor D does not twist, and the pin orientation is always fixed, so the three-dimensional vision detection module 81 of the image detection station B can accurately collect the pin coplanarity data; when releasing materials, the suction tube 732 descends in a straight line without deflection, reducing the positional error of the transmissive photoelectric sensor D falling into the carrier tape, and fully meeting the posture and position requirements of precision tape packaging.

[0091] During the material feeding process of the suction assembly 73, the limiting clamp 736 and the mounting base 731 will come into contact and collide. Therefore, a buffer pad 738 is provided between the limiting clamp 736 and the mounting base 731. The buffer pad 738 (such as silicone or polyurethane material) can absorb the impact force of the collision, avoid the vibration caused by rigid contact from being transmitted to the suction tube 732 and the suction nozzle 733, reduce the rigid wear of the mounting base 731 and the limiting clamp 736, and avoid the deformation of the components caused by long-term collision.

[0092] In addition, the top end of the straw 732 is provided with a retaining ring 739 to prevent the limiting air supply cap 734 from detaching from the straw 732. The retaining ring 739 is embedded in the top end of the straw 732, axially restricting the displacement of the limiting air supply cap 734, completely eliminating the risk of the limiting air supply cap 734 loosening or falling off under conditions of high-speed rotation of the turntable 71, repeated action of the pressing mechanism 75, or long-term vibration. This ensures that the limiting air supply cap 734 and the air passage interface at the top end of the straw 732 always maintain a tight fit, avoiding air leakage, ensuring the pressure stability of negative pressure adsorption and positive pressure dispensing, and preventing the transmissive photoelectric sensor D from adsorbing and falling off or causing poor dispensing.

[0093] Preferably, the pressing mechanism 75 includes a pressing cylinder 751, a transmission arm 752 connected to the piston rod end of the pressing cylinder 751, and a pressing head 753 disposed on the transmission arm 752. During operation, the piston rod of the pressing cylinder 751 extends, and the pressing head 753, driven by the transmission arm 752, presses vertically against the top of the limiting air supply cap 734 of the suction assembly 73 (a wear-resistant pad may be provided on the contact surface between the pressing head 753 and the air supply cap to avoid wear). At this time, the downward pressure of the pressure head 753 overcomes the elastic force of the return spring 735, pushing the suction tube 732 to slide vertically downward along the mounting base 731 until the suction nozzle 733 carrying the transmissive photoelectric sensor D descends to the preset height; after the suction nozzle 733 reaches the specified height, the discharge air chamber 743 cuts off the negative pressure, and the transmissive photoelectric sensor D falls vertically into the opening of the carrier bag under the action of gravity and weak positive pressure; at the same time, the control system commands the piston rod of the pressing cylinder 751 to retract, the transmission arm 752 drives the pressure head 753 to reset upward, the return spring 735 releases its elastic force, pushing the suction tube 732 and the limiting air supply cap 734 back to the initial position, and the limiting clamp 736 fits and limits the lower end face of the mounting base 731, waiting for the next cycle.

[0094] In order to reduce the sliding friction between the straw 732 and the mounting base 731, the mounting base 731 is provided with a sliding sleeve 730 that is fitted onto the straw 732.

[0095] In a preferred embodiment, four suction components 73 arranged in a circular array are arranged on the turntable 71, and an image detection station B is formed on the left or right side of the turntable 71.

[0096] This can be understood as follows: four material suction components 73 are evenly distributed in a circular array on the vertical turntable 71, corresponding to four core workstations (in clockwise / counterclockwise order): (1) material suction station A directly above; (2) image detection station B on the left / right side; (3) material release station C directly below; (4) empty stroke reset station (the angle between adjacent workstations is 90°). The servo motor 723 drives the turntable 71 to rotate in 90° increments to ensure that each material suction component 73 accurately stops at the corresponding workstation.

[0097] For example, when the first suction assembly 73 rotates to the upper material picking position A, the air guide hole 711 connects with the round hole-shaped material picking air chamber 741 of the vacuum friction disk 74, and the negative pressure is transmitted to the suction nozzle 733 through the air path, adsorbing the reverse posture transmission photoelectric sensor D (pins facing up and grooves facing down) output by the gravity-type track; the elastic telescopic structure of the suction assembly 73 adapts to the height deviation of the transmission photoelectric sensor D, and the anti-rotation rod 737 restricts the circumferential rotation of the suction tube 732 to ensure the stability of the adsorption posture.

[0098] Servo motor 723 drives turntable 71 to rotate 90°. The first suction component 73, carrying the transmissive photoelectric sensor D, flips to the left / right image detection station B. The air guide hole 711 enters the arc-shaped transfer air chamber 742 along with the turntable 71 (continuously providing negative pressure, and the suction force is not interrupted). At this time, the second suction component 73 rotates synchronously to the picking station A and begins to pick up the new transmissive photoelectric sensor D (parallel picking, with no time wasted).

[0099] The 3D vision inspection module 81 of image inspection station B is started. Because the transmissive photoelectric sensor D is always attracted by negative pressure (fixed posture, pins facing upwards) and the anti-rotation structure restricts circumferential deflection, the inspection module accurately collects data such as pin coplanarity and surface defects, and feeds the inspection results back to the control system in real time.

[0100] Turntable 71 continues to rotate 90°, and the first suction component 73 reaches the material discharge station C directly below, with the air guide hole 711 connecting with the material discharge air chamber 743; the second suction component 73 rotates to the detection station to start detection, and the third suction component 73 rotates to the material picking station A to start picking up materials.

[0101] The control system determines the following based on the detection results: If the product is good, the pressing cylinder 751 of the pressing mechanism 75 drives the transmission arm 752 and the pressing head 753 to press against the limit air supply cap 734 of the first suction component 73, pushing the suction tube 732 down to above the bag opening of the carrier belt, the discharge air chamber 743 cuts off the negative pressure, and the transmission photoelectric sensor D accurately falls into the carrier belt; if the product is defective, the control system instructs the servo motor 723 to fine-tune the rotation angle (or triggers the sorting mechanism at the next station) to send the defective product to the recycling cylinder without affecting the normal discharge process. Turntable 71 rotates another 90°, and the first suction component 73 returns to its initial state after passing through the empty stroke reset station (the reset spring 735 pushes the suction tube 732 to reset, and the pressure head 753 retracts). At the same time, the second suction component 73 reaches the discharge station C, the third suction component 73 reaches the detection station, and the fourth suction component 73 reaches the picking station A, forming a four-station cycle of picking, detection, discharge, and reset, realizing continuous automated operation.

[0102] After image testing, defective products are generated and need to be recycled. Therefore, after the transmissive photoelectric sensor D completes pin coplanarity testing at image detection station B, the system marks it as either qualified or defective. Qualified transmissive photoelectric sensors D move towards the feeding station C as the turntable 71 rotates, while defective products continue to rotate with the turntable 71 until they reach the preset defective product rejection position. When the suction component 73, which absorbs defective products, reaches the rejection position, the air supply structure cuts off the negative pressure or introduces positive pressure, using airflow to blow the defective products off the suction component 73 and accurately into the recycling cylinder below. This achieves rapid separation of defective products without affecting the continuous operation of other suction components 73 on the turntable 71. It should be noted that when defective products are present and feeding of the carrier belt is impossible, the carrier belt will wait for a qualified transmissive photoelectric sensor D on the next turntable to feed the defective product.

[0103] In practical applications, before packaging, the tape and reel packaging machine uses its own pre-heat-sealing detection structure (such as image detection) to identify and detect the transmissive photoelectric sensor D on the carrier tape. If defective parts are generated after passing through the pre-heat-sealing detection structure, they need to be recycled, and the carrier tape needs to be replenished to make up for the gaps caused by the defective parts. To this end, the tape and reel testing machine for the transmissive photoelectric sensor D provided by the present invention also includes a replenishment mechanism 9. The replenishment mechanism 9 includes a base frame 91, a guide rail type rodless cylinder 92 set on the base frame 91, a lifting cylinder 93 set upward on the moving slider of the guide rail type rodless cylinder 92, a transverse telescopic cylinder 94 set on the top of the lifting cylinder 93, a support shaft 95 set on the piston rod end of the transverse telescopic cylinder 94, a swing rod 96 rotatably set on the support shaft 95, and a replenishment suction nozzle 97 set downward at the free end of the swing rod 96. The support shaft 95 is provided with a torsion spring 98 to limit the swing amplitude of the swing rod 96.

[0104] When the pre-seal inspection structure of the tape packaging mechanism 82 detects a defective part, the carrier belt stops conveying and precisely positions the defective part within the working range of the replenishment mechanism 9. The guide rail type rodless cylinder 92 drives the moving slider to move laterally, while the lifting cylinder 93 rises / falls and the lateral telescopic cylinder 94 extends / retracts, coordinating to adjust the position of the replenishment suction nozzle 97, aligning it with the defective part on the carrier belt. The replenishment suction nozzle 97 applies negative pressure to adsorb the defective part, and the swing rod 96 adaptively adjusts its angle under the action of the torsion spring 98, ensuring flexible adsorption and preventing stacking that could damage the transmissive photoelectric sensor D. The guide rail type rodless cylinder 92 moves the assembly above the recycling cylinder, the replenishment suction nozzle 97 cuts off the negative pressure, and the defective part is placed into the recycling cylinder, completing the rejection process. After rejecting defective products, the replenishing mechanism 9 moves to the qualified product supply source (such as the replenishing bin or the qualified product buffer area of ​​the flipping and discharging mechanism 7), adsorbs qualified products, and then moves to the empty space above the carrier belt. Through the coordinated adjustment of the position by each cylinder, the replenishing nozzle 97 releases the qualified products and accurately replenishes them to the original position of the unqualified products on the carrier belt, ensuring that there are no empty spaces in the carrier belt and that all of them are qualified products.

[0105] Those skilled in the art can refer to the prior art to configure the tape and reel packaging mechanism 82, and will not elaborate on the specific structure and working principle of the tape and reel packaging mechanism 82.

[0106] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A test strapping machine for optoelectronic sensors, characterized in that The application relates to a photoelectric sensor testing device, which comprises a workbench, an inclined bench plate arranged on the workbench, a test track arranged on the inclined bench plate in sequence from top to bottom, a test sorting mechanism and a qualified unloading track, a turnover unloading mechanism arranged below the qualified unloading track, a three-dimensional visual detection module arranged beside the turnover unloading mechanism, and a braided packaging mechanism arranged on the workbench and used for packaging photoelectric sensors, wherein a test station is arranged on the test track, a light-shielding electrical test mechanism for testing the photoelectric sensors on the test track is further arranged on the inclined bench plate, the top end of the test track is fed through a feeding mechanism, the test sorting mechanism is used for moving the photoelectric sensors with qualified electrical properties to the qualified unloading track and moving the photoelectric sensors with abnormal electrical properties to a test abnormal recovery assembly, the turnover unloading mechanism comprises a vertical rotating disc, a driving mechanism for driving the rotating disc to rotate in a division mode, at least two suction assemblies are arranged in a circumferential array on the front end surface of the rotating disc, and the suction assemblies are provided with negative pressure supply and interruption through a gas supply structure, a material taking station is formed above the rotating disc and is connected with the qualified unloading track, an image detection station is formed on the left side or the right side of the rotating disc and is connected with the three-dimensional visual detection module, and a material discharging station is formed below the rotating disc and is connected with the braided packaging mechanism, the driving mechanism comprises a central rotating shaft arranged behind the rotating disc and drivingly connected with the rotating disc, a shaft sleeve seat sleeved on the central rotating shaft and rotationally connected with the central rotating shaft, and a servo motor connected with the flange of the shaft sleeve seat, and the output end of the servo motor is drivingly connected with the central rotating shaft through a key connection mode.

2. The test ribbon machine for photosensors according to claim 1, characterized in that, The gas supply structure comprises a vacuum friction disc sleeved on the shaft sleeve seat and tightly abutting against the back surface of the rotating disc, the end surface of the vacuum friction disc is provided with a material taking cavity, a transfer cavity and a material discharging cavity, the circumferential surface of the vacuum friction disc is provided with air inlet holes respectively communicating with the material taking cavity, the transfer cavity and the material discharging cavity, the back surface of the rotating disc is provided with air guide holes with the same number as the suction assemblies and corresponding air paths, and the air guide holes are switched to be connected with the material taking cavity, the transfer cavity and the material discharging cavity by rotating the rotating disc relative to the vacuum friction disc.

3. The test ribbon machine for photosensors according to claim 2, characterized in that, A guide column is fixed on the shaft sleeve seat and faces the rotating disc, the back surface of the vacuum friction disc is provided with a guide hole matched with the guide column, and an elastic member is arranged between the shaft shoulder of the shaft sleeve seat and the vacuum friction disc and applies an elastic sealing force to the vacuum friction disc.

4. The optical sensor test ribbon machine of claim 1, wherein, The application further comprises a pressing mechanism for driving the lowermost suction assembly on the rotating disc to descend, the suction assembly comprises a mounting seat fixed on the rotating disc, a suction pipe vertically extending through the mounting seat, a suction nozzle fixed on the bottom end of the suction pipe, and a limiting air supply cap arranged on the top of the suction pipe, a return spring is sleeved on the suction pipe between the mounting seat and the limiting air supply cap, the bottom of the suction pipe is provided with a limiting clamp below the mounting seat, the top end of the suction pipe is provided with an air inlet and is connected with the limiting air supply cap in an air path mode, the limiting clamp is provided with a rotation stopping rod extending upwards, and the mounting seat is provided with a rotation stopping hole matched with the rotation stopping rod.

5. The test ribbon machine for photosensors according to claim 4, characterized in that, The lower pressing mechanism comprises a lower pressing cylinder, a transmission arm connected with the piston rod end of the lower pressing cylinder, and a pressing head arranged on the transmission arm.

6. The test ribbon machine for photosensors of claim 1, wherein, The light-shielded electrical property testing mechanism comprises a light-shielded cover, electrical connection modules located on both sides of the testing station, a testing drive mechanism, a first blocker arranged upstream of the electrical connection modules, and a second blocker arranged behind the electrical connection modules, the first blocker being used to block and release a set number of photoelectric sensors to be transported to the testing station, and the second blocker being used to limit the photoelectric sensors of the testing track in the testing station or release the photoelectric sensors to be transported in the downstream direction; the testing drive mechanism is used to drive the two electrical connection modules to move or reset to one side of the photoelectric sensors respectively, so that a plurality of test pins on the electrical connection modules are respectively and one-to-one connected with each photoelectric sensor pin to test the photoelectric sensor; the testing track is provided with a left-right through light-transmitting through hole at the testing station.

7. The test strapping machine for photosensors according to claim 1, characterized in that, The front of the output end of the qualified discharging track is provided with a discharging in-place blocking arm, the upper part of the output end of the qualified discharging track is provided with a discharging in-place pressing arm, and the discharging in-place blocking arm and the discharging in-place pressing arm form a material taking station, the discharging in-place pressing arm moves up and down by a discharging position adjusting cylinder, and the bottom of the discharging in-place pressing arm is provided with a position adjusting inclined surface.

8. The test strapping machine for photosensors according to claim 1, characterized in that, The testing and sorting mechanism comprises a transverse movement drive mechanism, a sorting conveying track, and a sorting blocker, the sorting conveying track is used to receive the photoelectric sensors output by the testing track, the sorting blocker is used to limit the entering photoelectric sensors in the sorting conveying track, and the transverse movement drive mechanism is used to drive the sorting conveying track to be connected with the qualified discharging track or the testing and abnormal recovery assembly respectively.

9. The test strapping machine for photosensors according to claim 1, characterized in that, The feeding mechanism comprises a base frame, a guide rail type rodless cylinder arranged on the base frame, a lifting cylinder arranged on a moving slider of the guide rail type rodless cylinder in an upward direction, a transverse telescopic cylinder arranged on the top of the lifting cylinder, a support shaft body arranged on the piston rod end of the transverse telescopic cylinder, a swing lever rotatably arranged on the support shaft body, and a feeding suction nozzle arranged on the free end of the swing lever in a downward direction, and a torsion spring arranged on the support shaft body is used to limit the swing amplitude of the swing lever.

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