Test and sort apparatus with LEDs placed inside an integrating sphere

Abstract

The application belongs to the technical field of photoelectric testing, and discloses a testing and sorting device with an LED placed inside an integrating sphere, which comprises a material moving assembly, a material feeding station, a centering station, a testing station and a material discharging station. The centering station comprises a mechanical centering assembly, which comprises a centering mold and a centering mold driving member. The centering mold is used for clamping the material to be tested, and the centering mold driving member is used for driving the centering mold to move so as to center the material to be tested on the carrier. The testing station is used for measuring the energized test data of the material to be tested, and comprises an integrating sphere, a probe base and a jacking assembly. The probe base is arranged inside the integrating sphere, and comprises a probe. The jacking assembly is used for pushing the carrier to move upwards so that the material to be tested enters the inside of the integrating sphere and abuts against the probe. The material discharging station is used for sorting the tested material from the carrier according to the energized test data. The application realizes effective collection and stable measurement of full-angle light parameters of side-emitting products, and significantly improves the testing accuracy and repeatability of key indicators such as luminous flux and light intensity distribution.

Description

Technical Field

[0001] This invention belongs to the field of optoelectronic testing technology, specifically relating to a testing and sorting device that places LEDs inside an integrating sphere. Background Technology

[0002] In the field of optoelectronic device manufacturing, especially for the optical parameter testing of side-emitting LEDs (such as CSP and NCSP packaged products), accurately collecting light output from various angles is crucial to ensuring the reliability of test data. Side-emitting devices are characterized by a large emission angle and uneven light intensity distribution. Traditional testing equipment typically uses a planar carrier to support the material under test and presses the probe down to contact the electrodes for energization testing. However, at this time, the device is still in an open environment or located outside the integrating sphere, and the light emitted from the side cannot be effectively collected. This results in lower measured values ​​for parameters such as luminous flux and light intensity distribution, which cannot truly reflect the device performance.

[0003] To address these issues, some equipment uses robotic arms to grip and feed devices into the integrating sphere for testing. However, the gripping and transfer process is prone to device displacement or damage, and the testing efficiency is low. Furthermore, existing centering mechanisms mostly rely on simple mechanical limits, making it difficult to achieve rapid and accurate positioning of small, orientation-sensitive side-emitting devices. Poor probe contact consistency further affects the repeatability and stability of optical parameter testing.

[0004] Therefore, there is an urgent need in the field for a testing and sorting device that places LEDs inside an integrating sphere to solve the above-mentioned technical problems. Summary of the Invention

[0005] In view of this, the present invention provides a testing and sorting device that places LEDs inside an integrating sphere to solve the problems in related technologies where side-emitting materials under test cannot effectively collect side-emitting light during optical parameter testing, and where centering and positioning rely on manual adjustment, resulting in low accuracy, poor testing efficiency, and poor stability.

[0006] To address the aforementioned technical problems, this invention provides a testing and sorting device that places LEDs inside an integrating sphere, comprising: A material transfer assembly includes a carrier for loading the material to be tested and a conveyor for conveying the carrier; The loading station is used to place the material to be tested onto the carrier; The centering station includes a mechanical centering assembly, which includes a centering mold and a centering mold drive for moving the centering mold. The centering mold is used to clamp the material to be tested, and the centering mold drive is used to drive the centering mold to move so that the material to be tested is centered on the carrier. The test station is used to measure the electrical test data of the material under test. It includes an integrating sphere, a probe base and a lifting assembly. The probe base is located inside the integrating sphere and includes a probe. The lifting assembly is used to push the carrier upward so that the material under test enters the interior of the integrating sphere and abuts against the probe. The unloading station is used to sort the tested materials from the carrier based on the power-on test data.

[0007] As a further improvement of the present invention, the conveyor table is ring-shaped, and there are twelve carriers. The twelve carriers are distributed at intervals on the conveyor table. The loading station, the centering station, the testing station and the unloading station are respectively located on the outside of the conveyor table and arranged sequentially along the conveying direction of the conveyor table.

[0008] As a further improvement of the present invention, the vehicle includes a fixed vehicle and a movable vehicle movably connected to the fixed vehicle; The movable carrier includes a loading end, a pushing end, and a movable shaft connecting the loading end and the pushing end. The movable shaft is sleeved inside the fixed carrier, and an elastic element is sleeved on the movable shaft. The two ends of the elastic element abut against the fixed carrier and the pushing end, respectively. The lifting assembly pushes the pushing end so that the loading end enters the interior of the integrating sphere.

[0009] As a further improvement of the present invention, the lifting assembly includes a lifting drive, a lifting guide rail, a lifting slider, a lifting swing arm, and a lifting head; The lifting swing arm connects the lifting drive and the lifting slider. The lifting slider is slidably mounted on the lifting guide rail. The lifting head is provided at the end of the lifting slider facing the carrier. The lifting drive drives the lifting swing arm to swing, causing the lifting slider to slide along the lifting guide rail so that the lifting head pushes the pushing end upward.

[0010] As a further improvement of the present invention, the mechanical centering assembly further includes a centering guide rail, on which a mold connector is slidably connected. The mold connector is connected to the centering mold, and the mold connector drives the centering mold to move along the centering guide rail.

[0011] As a further improvement of the present invention The centering mold includes a first centering mold and a second centering mold arranged opposite to each other; The mold connector includes a first mold connector and a second mold connector. The first mold connector is connected to the first centering mold, and the second mold connector is connected to the second centering mold. Elastic elements are connected to the first mold connector and the second mold connector, and the elastic elements are arranged parallel to the centering guide rail.

[0012] As a further improvement of the present invention, the centering mold driving component includes a centering mold driving motor and a partition connected to the output shaft of the centering mold driving motor, wherein the centering mold driving motor is used to drive the partition to rotate. The first mold connector is provided with a first dividing wheel, and the second mold connector is provided with a second dividing wheel. The straight line where the first dividing wheel and the second dividing wheel are located is parallel to the centering guide rail. The separator is located between the first separator wheel and the second separator wheel.

[0013] As a further improvement of the present invention, the cross-section of the separator is elliptical, the two ends of the short axis of the separator are mold closing ends, and the two ends of the long axis of the separator are mold parting ends. When the first separator wheel and the second separator wheel abut against the mold closing end, the first centering mold and the second centering mold close. When the first separator wheel and the second separator wheel abut against the mold parting end, the first centering mold and the second centering mold part.

[0014] As a further improvement of the present invention, the unloading station includes an unloading assembly for removing the tested material from the carrier, the unloading assembly including a blowing end, an outlet end, an X-axis moving part, a Y-axis moving part, and multiple unloading channels; The blowing end and the discharge end are connected to each other. The X-axis moving part and the Y-axis moving part are used to drive the discharge end to move along the X-axis / Y-axis to align with the discharge channel. The X-axis moving component includes an X-axis moving drive, an X-axis moving guide rail, and an X-axis moving base. The X-axis moving drive is used to drive the X-axis moving base to move along the X-axis moving guide rail. The Y-axis moving component includes a Y-axis moving drive, a Y-axis moving guide rail, and a Y-axis moving base. The Y-axis moving guide rail is disposed on the Y-axis moving base, and the discharge end is disposed on the Y-axis moving base. The Y-axis moving drive is used to drive the Y-axis moving base to move along the Y-axis.

[0015] As a further improvement of the present invention, the feeding station includes a hopper, a vibratory feeder, a feeding track, and a feeding assembly for placing the material to be tested on the feeding track onto the carrier. The feeding assembly includes at least one feeding head, and each feeding head is used to adsorb one of the materials to be tested.

[0016] Compared with existing technologies, this invention provides a testing and sorting device that places LEDs inside an integrating sphere. By using a lifting component, the material to be tested on the carrier is vertically lifted into the integrating sphere, allowing side-emitting products to complete electrical testing within the sphere and achieving effective collection of light parameters from all angles. Simultaneously, combined with the automatic clamping and positioning of the mechanical centering component and the continuous flow of the circular conveyor, the entire process of loading, centering, testing, and unloading / sorting of the material to be tested is automated. When light parameter testing is required, the conveyor transports the carrier containing the material to be tested to the testing station. The lifting component pushes the carrier upwards, ensuring the material to be tested accurately enters the integrating sphere and stably contacts the probe. At the same time, the mechanical centering component at the centering station uses a centering mold drive to drive the centering mold bidirectionally, automatically centering the material to be tested on the carrier and ensuring the consistency of the subsequent testing position. Compared to traditional testing and sorting equipment that places LEDs inside an integrating sphere, this new equipment eliminates the need for robotic arms to grasp and transfer LEDs into the sphere, avoiding issues such as device misalignment, damage, and side light leakage. It completely resolves the industry pain points of low luminous flux measurements and poor repeatability for side-emitting devices. By organically integrating centering, lifting, testing, and conveying functions, the entire testing process only requires overcoming relatively small movement resistance between the lifting components and elastic parts. Even during high-speed continuous operation, the equipment can achieve easy and stable lifting and resetting operations. This not only makes optical parameter testing exceptionally efficient and accurate, greatly improving production automation and yield, but also, because the entire test is completed within the sealed cavity of the integrating sphere, effectively shields against ambient light interference, further ensuring the authenticity and stability of the test data. Furthermore, this testing and sorting equipment with LEDs placed inside the integrating sphere has a compact structure, a clear transmission principle, and a high reuse rate of core components, which helps reduce equipment manufacturing costs and subsequent maintenance difficulties. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and not all embodiments. For those skilled in the art, other drawings obtained from these drawings without creative effort are all within the scope of protection of this application.

[0018] Figure 1 This is a perspective view of a testing and sorting device that places LEDs inside an integrating sphere, according to an embodiment of the present invention.

[0019] Figure 2 This is an internal perspective view of a testing and sorting device that places LEDs inside an integrating sphere, according to an embodiment of the present invention.

[0020] Figure 3 This is a perspective view of the testing station provided in an embodiment of the present invention.

[0021] Figure 4 This is another perspective view of the testing station provided in the embodiment of the present invention.

[0022] Figure 5 yes Figure 2 A magnified view of a portion at point A.

[0023] Figure 6 This is another internal perspective view of a test and sorting device that places LEDs inside an integrating sphere, as provided in an embodiment of the present invention.

[0024] Figure 7 yes Figure 6 A magnified view of a section at point B.

[0025] Figure 8 yes Figure 6 A magnified view of a section at point C.

[0026] Explanation of reference numerals in the attached figures: 00 represents the material to be tested. 10 is the material transfer assembly, 11 is the carrier, 111 is the fixed carrier, 112 is the movable carrier, 1121 is the loading end, 1122 is the pushing end, 1123 is the movable shaft, 1124 is the first elastic element, and 12 is the conveying table. 20 is the material loading station, 21 is the hopper, 22 is the vibratory feeder, 23 is the material loading track, 24 is the material loading assembly, and 241 is the material loading head. 30 is the centering station; 31 is the mechanical centering component; 311 is the centering mold; 3111 is the first centering mold; 3112 is the second centering mold; 312 is the centering mold drive component; 3121 is the centering mold drive motor; 3122 is the separator; 31221 is the mold closing end; 31222 is the mold parting end; 313 is the centering guide rail; 314 is the mold connector; 3141 is the first mold connector; 31411 is the first separator wheel; 3142 is the second mold connector; 31421 is the second separator wheel; 315 is the second elastic component. 40 is the testing station, 41 is the integrating sphere, 42 is the probe base, 421 is the probe, 43 is the lifting assembly, 431 is the lifting drive component, 432 is the lifting guide rail, 433 is the lifting slider, 434 is the lifting swing arm, and 435 is the lifting head. 50 is the unloading station, 51 is the unloading assembly, 511 is the blowing end, 512 is the discharge end, 513 is the X-axis moving component, 5131 is the X-axis moving drive component, 5132 is the X-axis moving guide rail, 5133 is the X-axis moving base, 514 is the Y-axis moving component, 5141 is the Y-axis moving drive component, 5142 is the Y-axis moving guide rail, 5143 is the Y-axis moving base, and 515 is the unloading channel. 60 is the visual inspection station, 61 is the visual inspection bracket, and 62 is the visual inspection component. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] To make the description of this disclosure more detailed and complete, illustrative descriptions of embodiments and specific examples of the present invention are provided below; however, these are not the only forms of implementing or utilizing the specific embodiments of the present invention. The embodiments cover features of multiple specific embodiments and the methods, steps, and their order for constructing and operating these specific embodiments. However, other specific embodiments may also be used to achieve the same or equivalent functions and step sequences. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0030] In the description of the embodiments of the present invention, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The word "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more. Other quantifiers should be understood similarly. The preferred embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0031] Please refer to Figures 1-8 This invention provides a testing and sorting device that places LEDs inside an integrating sphere to solve the problems in the prior art where side-emitting test material 00 cannot effectively collect side-emitting light during optical parameter testing, and where centering and positioning rely on manual adjustment, resulting in low accuracy, poor testing efficiency, and poor stability.

[0032] Specifically, please refer to Figure 1This is a schematic diagram of a testing and sorting device that places LEDs inside an integrating sphere, according to an embodiment of the present invention. Figure 2 This is an internal perspective view of a testing and sorting device that places LEDs inside an integrating sphere, according to an embodiment of the present invention. The testing and sorting device includes a material transfer assembly 10, a loading station 20, a centering station 30, a testing station 40, and a unloading station 50. The material transfer assembly 10, used to automate the flow of the material to be tested (00) between the stations, includes a carrier 11 and a conveyor 12. The carrier 11 is used to load the material to be tested (00), and the conveyor 12 is used to sequentially transport the carrier 11 to the loading station 20, the centering station 30, the testing station 40, and the unloading station 50. In this embodiment, the conveyor 12 is a ring-shaped conveyor 12, and twelve carriers 11 are evenly distributed on the conveyor 12, enabling continuous cyclic operation and significantly improving testing efficiency.

[0033] The carrier 11 includes a fixed carrier 111 and a movable carrier 112, with the movable carrier 112 movably connected to the fixed carrier 111. Specifically, the movable carrier 112 includes a loading end 1121, a pushing end 1122, and a movable shaft 1123 connecting the loading end 1121 and the pushing end 1122. The movable shaft 1123 is sleeved inside the fixed carrier 111, and an elastic element is sleeved on the movable shaft 1123, with its two ends abutting against the fixed carrier 111 and the pushing end 1122, respectively. In its natural state, the elastic element keeps the movable carrier 112 in the lower position, with the loading end 1121 positioned above the fixed carrier 111, facilitating loading and centering. When the pushing end 1122 is subjected to an upward pushing force, the movable shaft 1123 overcomes the elastic force of the elastic element and slides upward, allowing the loading end 1121 to carry the material to be tested 00 upward into the integrating sphere 41. The elastic element automatically resets after the thrust is removed, restoring the carrier 11 to its initial height, which facilitates subsequent material unloading operations.

[0034] The loading station 20 is used to place the material to be tested 00 onto the carrier 11. In this embodiment, the loading station 20 includes a hopper, a vibratory feeder 22, a loading track 23, and a loading assembly 24. The vibratory feeder 22 arranges the material to be tested 00 in the hopper in an orderly manner and conveys it to the loading track 23. The loading assembly 24 includes at least one loading head 241, each loading head 241 being used to adsorb one piece of material to be tested 00 and accurately place the material to be tested 00 onto the loading end 1121 of the carrier 11. The loading head 241 can use a vacuum adsorption method, which provides stable adsorption without damaging the material surface.

[0035] The centering station 30 includes a mechanical centering assembly 31, used to automatically center the material to be tested 00 on the carrier 11, ensuring accurate contact position of the probe 421 during subsequent testing. The mechanical centering assembly 31 includes a centering mold 311 and a centering mold drive 312. In this embodiment, the centering mold 311 includes a first centering mold 3111 and a second centering mold 3112 arranged opposite to each other. The centering mold drive 312 includes a centering mold drive motor 3121 and a separator 3122 that is drively connected to the output shaft of the centering mold drive motor 3121. The mechanical centering assembly 31 also includes a centering guide rail 313, on which a first mold connector 3141 and a second mold connector 3142 are slidably connected. The first mold connector 3141 is connected to the first centering mold 3111, and the second mold connector 3142 is connected to the second centering mold 3112. An elastic element is connected between the first mold connector 3141 and the second mold connector 3142. The elastic element is arranged parallel to the centering guide rail 313 to provide buffering and restoring force during mold closing.

[0036] The first mold connector 3141 is provided with a first dividing wheel 31411, and the second mold connector 3142 is provided with a second dividing wheel 31421. The straight line of the first dividing wheel 31411 and the second dividing wheel 31421 is parallel to the centering guide rail 313. The dividing member 3122 is disposed between the first dividing wheel 31411 and the second dividing wheel 31421. The cross-section of the dividing member 3122 is elliptical, with the two ends of its minor axis being the mold closing ends 31221 and the two ends of its major axis being the mold parting ends 31222. When the centering mold drive motor 3121 drives the separator 3122 to rotate until the short shaft contacts the separator wheel, the first separator wheel 31411 and the second separator wheel 31421 abut against the mold engagement end 31221, and the first centering mold 3111 and the second centering mold 3112 move closer to each other to complete mold closing, jointly clamping the material to be tested 00 and pushing it to the center position of the loading end 1121; when the separator 3122 rotates until the long shaft contacts the separator wheel, the first separator wheel 31411 and the second separator wheel 31421 abut against the mold parting end 31222, and the first centering mold 3111 and the second centering mold 3112 move away from each other to complete mold parting, releasing the material to be tested 00. Through the continuous rotation of the separator 3122, the material to be tested 00 is quickly and automatically centered without the need for manual intervention.

[0037] Test station 40 is used to measure the electrical test data of the material under test 00, and includes an integrating sphere 41, a probe 421 base 42, and a lifting assembly 43. The integrating sphere 41 is a sealed cavity; in this embodiment, the integrating sphere 41 is an integrating sphere used to collect the full-angle light parameters emitted by the material under test 00. The probe 421 base 42 is fixedly disposed inside the integrating sphere 41, and includes a probe 421, which is electrically connected to an external testing instrument. The lifting assembly 43 is disposed below the integrating sphere 41 and is used to push the movable carrier 112 of the carrier 11 upward, so that the material under test 00 enters the interior of the integrating sphere 41 and comes into contact with the probe 421.

[0038] The lifting assembly 43 includes a lifting drive 431, a lifting guide rail 432, a lifting slider 433, a lifting swing arm 434, and a lifting head 435. The lifting swing arm 434 connects the lifting drive 431 and the lifting slider 433. The lifting slider 433 is slidably mounted on the lifting guide rail 432, and the lifting head 435 is located at the end of the lifting slider 433 facing the carrier 11. The lifting drive 431 drives the lifting swing arm 434 to swing, causing the lifting slider 433 to slide upward along the lifting guide rail 432, so that the lifting head 435 accurately contacts the push end 1122 and pushes the movable carrier 112 upward. The material to be tested 00 then enters the integrating sphere 41. The material carrying end 1121 docks with the probe 421 base 42, and the probe 421 reliably contacts the electrode of the material to be tested 00, completing the electrical test. After the test is completed, the lifting drive component 431 reverses its movement, the lifting slider 433 falls back, and the movable carrier 112 automatically resets under the action of the elastic component.

[0039] The unloading station 50 is used to sort the tested materials from the carrier 11 according to the power-on test data. The unloading station 50 includes an unloading assembly 51, which includes a blowing end 511, a discharge end 512, an X-axis moving part 513, a Y-axis moving part 514, and multiple unloading channels 515. The blowing end 511 and the discharge end 512 are interconnected. The blowing end 511 is connected to an external air source, and the discharge end 512 is used to align the tested materials on the loading end 1121. The X-axis moving component 513 includes an X-axis moving drive component 5131, an X-axis moving guide rail 5132, and an X-axis moving base 5133. The X-axis moving drive component 5131 drives the X-axis moving base 5133 to move along the X-axis moving guide rail 5132. The Y-axis moving component 514 includes a Y-axis moving drive component 5141, a Y-axis moving guide rail 5142, and a Y-axis moving base 5143. The Y-axis moving guide rail 5142 is mounted on the X-axis moving base 5133, and the discharge end 512 is mounted on the Y-axis moving base 5143. The Y-axis moving drive component 5141 drives the Y-axis moving base 5143 to move along the Y-axis moving guide rail 5142. Through the coordinated drive of the X-axis moving component 513 and the Y-axis moving component 514, the discharge end 512 can quickly move to a position aligned with the corresponding feeding channel 515. The control system determines the quality grade of the material to be tested 00 based on the power-on test data collected at the test station 40, and controls the blowing end 511 to spray high-pressure airflow to blow the tested material off the loading end 1121 and guide it into the corresponding unloading channel 515 through the discharge end 512 to achieve automatic sorting.

[0040] In the above technical solution, on the one hand, the material to be tested 00 on the carrier 11 is vertically lifted into the integrating sphere 41 by the lifting component 43, so that the side-emitting product can complete the power-on test inside the integrating sphere. This achieves effective collection and stable measurement of light parameters from all angles, significantly improving the accuracy and repeatability of key indicators such as luminous flux and light intensity distribution. On the other hand, the automatic clamping and positioning by the mechanical centering component 31 and the continuous flow of the ring conveyor 12 completely eliminate the error of manual adjustment, ensuring the consistency of probe 421 contact, and making the entire process of loading, centering, testing, and unloading automated. This not only makes the light parameter testing process exceptionally efficient and accurate, greatly improving the level of production automation and yield, but also, because the entire test is completed inside the sealed integrating sphere 41, effectively shielding against ambient light interference, further ensuring the authenticity and stability of the test data. At the same time, this testing and sorting equipment with LEDs placed inside the integrating sphere has a compact structure, a clear transmission principle, and a high reuse rate of core components, which helps to reduce equipment manufacturing costs and the difficulty of later maintenance.

[0041] As a further improvement of the present invention, the conveyor table 12 is a ring-shaped conveyor table 12, and twelve carriers 11 are provided, which are evenly distributed on the conveyor table 12 at intervals. In this embodiment, the conveyor table 12 adopts a ring-shaped closed-loop structure, which can continuously circulate in a fixed direction in the horizontal plane, realizing the efficient flow of carriers 11 between various workstations. The twelve carriers 11 are fixed at equal intervals on the surface of the conveyor table 12, and the interval between adjacent carriers 11 is equal, ensuring that every time the conveyor table 12 rotates by a fixed angle, a carrier 11 accurately arrives at the current workstation, thereby realizing the parallel operation of the four processes of loading, centering, testing, and unloading.

[0042] The loading station 20, centering station 30, testing station 40, and unloading station 50 are respectively located on the outside of the conveyor table 12 and arranged sequentially along the conveying direction of the conveyor table 12. In this embodiment, the conveying direction is clockwise, and the four stations are arranged in a ring around the outer periphery of the conveyor table 12 in the order of loading station 20, centering station 30, testing station 40, and unloading station 50. Each station corresponds to a fixed working position on the conveyor table 12. When the carrier 11 moves to that position with the conveyor table 12, the actuator of the corresponding station is triggered.

[0043] In the above technical solution, on the one hand, the cooperation between the circular conveyor 12 and the twelve carriers 11 enables the equipment to operate continuously in a cyclical manner. When one carrier 11 is loading the material to be tested 00 at the loading station 20, another carrier 11 may be positioning at the intermediate station 30, a third carrier 11 is measuring optical parameters at the testing station 40, and a fourth carrier 11 is completing sorting at the unloading station 50. The four processes do not interfere with each other and are carried out synchronously, significantly improving the testing throughput per unit time. On the other hand, the stations are all located outside the conveyor 12, which facilitates the independent installation and maintenance of the actuators at each station, avoids motion interference between mechanisms, and provides ample space for operators to operate and debug. In addition, the spacing of the twelve carriers 11 and the sequential arrangement of the stations make the overall layout of the equipment compact and orderly, with the shortest conveying path, effectively shortening the idle travel time of the carriers 11 and further improving testing efficiency.

[0044] As a further improvement to the present invention, please refer to Figures 3-4 The carrier 11 includes a fixed carrier 111 and a movable carrier 112, which are movably connected to the fixed carrier 111 to form a lifting structure that can slide relative to each other in the vertical direction. Specifically, the fixed carrier 111 serves as a base and is fixedly installed on the surface of the conveyor table 12, providing support and guidance for the movable carrier 112; the movable carrier 112 serves as a load-bearing and lifting part, used to directly load the material to be tested 00 and complete the lifting action at the test station 40.

[0045] The movable carrier 112 includes a loading end 1121, a pushing end 1122, and a movable shaft 1123 connecting the loading end 1121 and the pushing end 1122. In this embodiment, the loading end 1121 is located at the upper part of the movable carrier 112, and its surface is provided with a positioning groove or adsorption hole for stably placing the material to be tested 00; the pushing end 1122 is located at the lower part of the movable carrier 112, facing the lifting assembly 43, and is used to receive the lifting thrust; the movable shaft 1123 is an optical axis extending in the vertical direction, with its top end fixedly connected to the loading end 1121, its bottom end fixedly connected to the pushing end 1122, and its middle part penetrating through a guide hole provided inside the fixed carrier 111. The movable shaft 1123 is sleeved inside the fixed carrier 111 and can slide smoothly in the vertical direction under the constraint of the guide hole, thereby guiding the entire movable carrier 112 to move up and down relative to the fixed carrier 111.

[0046] A first elastic element 1124 is sleeved on the movable shaft 1123, with its two ends abutting against the fixed carrier 111 and the pushing end 1122, respectively. In this embodiment, the first elastic element 1124 is a compression spring with an inner diameter slightly larger than the outer diameter of the movable shaft 1123, through which the movable shaft 1123 passes. The upper end of the first elastic element 1124 abuts against the lower surface of the fixed carrier 111 or the spring seat, and the lower end abuts against the upper surface of the pushing end 1122. In its natural state, the first elastic element 1124 is in a pre-compressed state, and its elastic force pushes the pushing end 1122 downward, keeping the movable carrier 112 in its lower limit position. At this time, the loading end 1121 is located at an appropriate height above the fixed carrier 111, facilitating the placement of the material to be tested 00 at the loading station 20, the clamping and positioning at the centering station 30, and the blowing and sorting at the unloading station 50.

[0047] When the carrier 11 moves to the test station 40 along with the conveyor 12, the lifting assembly 43 pushes the pusher end 1122 upward. The pusher end 1122 overcomes the elastic force of the elastic element, driving the movable shaft 1123 and the carrier end 1121 to rise synchronously. The carrier end 1121 carries the test material 00 upward and accurately enters the integrating sphere 41. When the test material 00 rises to the set height, the carrier end 1121 and the probe 421 base 42 are docked, and the probe 421 and the electrode of the test material 00 are reliably in contact, allowing for electrical testing. After the test is completed, the lifting assembly 43 withdraws its thrust, the first elastic element 1124 releases its stored elastic potential energy, pushes the pusher end 1122 downward to reset, the movable carrier 112 automatically descends to its initial lower position, and the carrier end 1121 carries the tested material out of the integrating sphere 41 and continues to flow to the unloading station 50.

[0048] In the above technical solution, on the one hand, the separate design of the fixed carrier 111 and the movable carrier 112, and the reset mechanism of the first elastic element 1124, enable the material under test 00 to quickly and smoothly enter the integrating sphere 41 and accurately dock with the probe 421 at the test station 40, eliminating the need for a complex robotic gripping and transfer mechanism, greatly simplifying the equipment structure and shortening the test cycle. On the other hand, the lifting movement of the movable carrier 112 is entirely driven by the lifting component 43 and the first elastic element 1124 automatically resets, eliminating the need for an additional active pull-down mechanism, making motion control simple and reliable. Furthermore, the buffering effect of the first elastic element 1124 can prevent rigid impact on the carrier 11 or the material under test 00 during the lifting process, effectively protecting the device safety. In addition, the precise fit between the movable shaft 1123 and the guide hole of the fixed carrier 111 ensures the repeatability of the positioning accuracy of the material-carrying end 1121 during each rise, providing a reliable structural foundation for stable contact of the probe 421 and accurate measurement of optical parameters.

[0049] As a further improvement of the present invention, the lifting assembly 43 includes a lifting drive 431, a lifting guide rail 432, a lifting slider 433, a lifting swing arm 434, and a lifting head 435. The lifting drive 431 is the power source of the lifting assembly 43. In this embodiment, the lifting drive 431 is a rotary motor, and its output shaft is fixedly connected to one end of the lifting swing arm 434. The other end of the lifting swing arm 434 is movably connected to the lifting slider 433, specifically through a hinge shaft or rolling bearing to achieve relative rotation. The lifting slider 433 is slidably mounted on the lifting guide rail 432, which is fixedly installed vertically on the frame of the testing station 40, providing precise lifting guidance for the lifting slider 433. A lifting head 435 is fixedly provided at one end of the lifting slider 433 facing the carrier 11. The shape of the end of the lifting head 435 is adapted to the lower surface of the pushing end 1122. In this embodiment, the end of the lifting head 435 is a hemispherical or flat rubber pad to reduce contact impact and increase friction.

[0050] When the carrier 11 moves to the test station 40 with the conveyor 12 and stops, the control system sends an action command to the lifting drive 431. The lifting drive 431 drives the output shaft to rotate in the forward direction, causing the lifting swing arm 434 to swing around the output shaft axis. When the lifting swing arm 434 swings, the end connected to the lifting slider 433 generates an upward displacement component, thereby pushing the lifting slider 433 to rise smoothly along the lifting guide rail 432. The lifting slider 433 drives the lifting head 435 to rise synchronously. The lifting head 435 accurately contacts the lower surface of the pushing end 1122 of the movable carrier 112 and continuously applies an upward thrust. The pushing end 1122 overcomes the elastic force of the first elastic element 1124, driving the movable shaft 1123 and the carrying end 1121 to rise, allowing the material to be tested 00 to enter the integrating sphere 41 to complete the test.

[0051] After the test, the lifting drive component 431 drives the output shaft to rotate in the opposite direction, the lifting swing arm 434 swings back, and the lifting slider 433 descends smoothly along the lifting guide rail 432 under the combined action of gravity and the reset elastic force of the first elastic component 1124. The lifting head 435 disengages from the pushing end 1122, and the movable carrier 112 automatically resets to the initial lower position.

[0052] In the above technical solution, on the one hand, the linkage structure of the lifting swing arm 434 and the lifting slider 433 converts the rotational motion of the lifting drive component 431 into the linear lifting motion of the lifting head 435. The transmission chain is short and the energy loss is small. Moreover, the force amplification effect of the swing arm allows a small driving force to overcome the elastic force of the first elastic element 1124 and the weight of the carrier 11, achieving stable lifting. On the other hand, the precise cooperation between the lifting guide rail 432 and the lifting slider 433 ensures that the movement trajectory of the lifting head 435 is highly consistent with each rise, improving the repeatability and ensuring reliable docking between the material loading end 1121 and the probe 421 base 42. In addition, the lifting assembly 43 has a compact overall structure and occupies little space, making it easy to arrange in the limited space of the testing station 40. Furthermore, all components are standard modular components, which are easy to manufacture, install, and maintain, further reducing equipment costs.

[0053] As a further improvement to the present invention, please refer to Figure 5 The mechanical centering assembly 31 further includes a centering guide rail 313, which provides precise linear motion guidance for the mechanical centering assembly 31. In this embodiment, the centering guide rail 313 is fixedly installed on the frame of the centering station 30, and its extension direction is parallel to the direction in which the material to be tested 00 needs to be centered, specifically in a horizontal direction and perpendicular to the conveying direction of the conveyor table 12. The centering guide rail 313 adopts a high-precision linear guide rail, which has good rigidity and smooth movement.

[0054] A mold connector 314 is slidably connected to the centering guide rail 313, and the mold connector 314 is connected to the centering mold 311. In this embodiment, the mold connector 314 includes a first mold connector 3141 and a second mold connector 3142, which are fixedly connected to the first centering mold 3111 and the second centering mold 3112, respectively. Both the first mold connector 3141 and the second mold connector 3142 are provided with a slider structure adapted to the centering guide rail 313, which can slide back and forth along the centering guide rail 313. The fit clearance between the mold connector 314 and the centering guide rail 313 is precisely controlled to ensure that there is no shaking or jamming during the movement.

[0055] The mold connector 314 drives the centering mold 311 to move along the centering guide rail 313. Specifically, when the centering mold drive 312 is working, its output driving force is transmitted through the separator 3122, the first separator wheel 31411, and the second separator wheel 31421 to the first mold connector 3141 and the second mold connector 3142, driving the two mold connectors 314 to slide towards or away from each other along the centering guide rail 313. The first mold connector 3141 drives the first centering mold 3111, and the second mold connector 3142 drives the second centering mold 3112. The two move synchronously and jointly complete the mold closing and opening actions of the centering mold 311.

[0056] In the above technical solution, on the one hand, the sliding fit between the centering guide rail 313 and the mold connector 314 provides a precise guiding path for the movement of the centering mold 311, effectively limiting the degree of freedom of the mold in the non-moving direction, ensuring that the first centering mold 3111 and the second centering mold 3112 always move smoothly along the same straight line, avoiding clamping position deviation or damage to the test material 00 due to movement sway; on the other hand, the mold connector 314, as a bridge between the centering mold 311 and the drive mechanism, smoothly transmits the driving force to the centering mold 311, while making the installation and replacement of the centering mold 311 more convenient, allowing mold maintenance or specification switching to be completed without disassembling the entire drive mechanism. In addition, the high rigidity design of the centering guide rail 313 can withstand the reaction force generated when the mold is closed, ensuring repeatability of positioning accuracy under long-term operation, thus providing a reliable structural guarantee for the high-precision automatic centering of the test material 00.

[0057] As a further improvement of the present invention, the centering mold 311 includes a first centering mold 3111 and a second centering mold 3112 arranged opposite to each other. The first centering mold 3111 and the second centering mold 3112 are arranged in a mirror-symmetric manner, and their opposing sides are provided with a clamping surface adapted to the outline of the material to be tested 00. The clamping surface can adopt a V-groove, an arc surface, or a contoured structure to achieve adaptive centering and clamping of materials to be tested 00 of different specifications. In this embodiment, the clamping surfaces of the first centering mold 3111 and the second centering mold 3112 are both provided with a flexible pad to avoid scratching the surface of the material to be tested 00 during clamping.

[0058] The mold connector 314 includes a first mold connector 3141 and a second mold connector 3142. The first mold connector 3141 is fixedly connected to the first centering mold 3111, and the second mold connector 3142 is fixedly connected to the second centering mold 3112. In this embodiment, both the first mold connector 3141 and the second mold connector 3142 are detachably connected to the corresponding centering mold 311 by bolts, facilitating quick replacement of the appropriate mold specification according to the 00 model of the material to be tested. Both the first mold connector 3141 and the second mold connector 3142 are slidably mounted on the centering guide rail 313 and can move linearly in opposite directions or away from each other along the centering guide rail 313.

[0059] A second elastic element 315 is connected to the first mold connector 3141 and the second mold connector 3142. The second elastic element 315 is arranged parallel to the centering guide rail 313. In this embodiment, the second elastic element 315 is a tension spring, with its two ends hooked onto the lugs provided on opposite sides of the first mold connector 3141 and the second mold connector 3142, respectively. The axis of the second elastic element 315 is parallel to the axis of the centering guide rail 313, ensuring that the direction of the elastic force is collinear with the direction of movement of the mold connector 314, thus avoiding the generation of lateral force. In its natural state, the second elastic element 315 is in a pre-stretched state, and its elastic force tends to bring the first mold connector 3141 and the second mold connector 3142 closer together, that is, drive the first centering mold 3111 and the second centering mold 3112 to tend to close.

[0060] When the mechanical centering assembly 31 is working, the centering mold drive 312 drives the separator 3122 to rotate. The first separator wheel 31411 and the second separator wheel 31421 force the first mold connector 3141 and the second mold connector 3142 to separate against the tension of the second elastic element 315, thus achieving mold separation. When the separator 3122 rotates to the release position, the tension of the second elastic element 315 drives the first mold connector 3141 and the second mold connector 3142 to move closer together, thus achieving mold closing. The second elastic element 315 provides a stable restoring force throughout the entire movement, ensuring that the first centering mold 3111 and the second centering mold 3112 can tightly adhere to the material to be tested 00 and push it to the center position of the loading end 1121.

[0061] In the above technical solution, on the one hand, the second elastic element 315, which is arranged parallel between the first mold connector 3141 and the second mold connector 3142, provides a continuous and stable mold closing driving force for the centering mold 311. This allows the centering action to operate without relying on the driving component to maintain a constant force throughout the process. The separator 3122 only needs to overcome the elastic force during mold separation, while the second elastic element 315 autonomously completes the mold closing process, significantly reducing the power requirements and control complexity of the driving component. On the other hand, the reset function of the second elastic element 315 allows the centering mold 311 to automatically return to the preset initial mold closing position after each mold separation, eliminating cumulative motion errors and ensuring the consistency of repeated centering actions. Furthermore, the parallel arrangement of the second elastic element 315 and the centering guide rail 313 avoids the elastic force from forming an angle with the motion guide direction, effectively preventing the mold connector 314 from skewing or jamming during sliding, further improving centering accuracy and motion stability.

[0062] As a further improvement of the present invention, the centering mold drive component 312 includes a centering mold drive motor 3121 and a separator 3122 that is driveably connected to the output shaft of the centering mold drive motor 3121. In this embodiment, the centering mold drive motor 3121 is a stepper motor or a servo motor, and its output shaft axis is arranged in the vertical direction, and is fixedly connected to the separator 3122 by a coupling or key. The centering mold drive motor 3121 is used to drive the separator 3122 to perform precise rotational movement around its axis, and the rotation angle of the separator 3122 corresponds one-to-one with the opening and closing state of the centering mold 311.

[0063] The first mold connector 3141 is provided with a first dividing wheel 31411, and the second mold connector 3142 is provided with a second dividing wheel 31421. Both the first dividing wheel 31411 and the second dividing wheel 31421 are freely rotatable rolling elements. In this embodiment, deep groove ball bearings or needle roller bearings are used. Their outer rings roll in contact with the outer periphery of the dividing member 3122, and their inner rings are respectively fixedly installed on opposite sides of the first mold connector 3141 and the second mold connector 3142. The axes of the first dividing wheel 31411 and the second dividing wheel 31421 are parallel to the extension direction of the centering guide rail 313, and the axes of the first dividing wheel 31411 and the second dividing wheel 31421 are located in the same horizontal plane. The straight line containing the first dividing wheel 31411 and the second dividing wheel 31421 is parallel to the centering guide rail 313, ensuring that the direction of the driving force applied to the two dividing wheels when the dividing member 3122 rotates is always collinear with the direction of movement of the mold connector 314.

[0064] The separator 3122 is disposed between the first separator wheel 31411 and the second separator wheel 31421. In this embodiment, the separator 3122 is a cam structure, specifically an elliptical cam with an elliptical cross-section and a minor axis and a major axis. The outer periphery of the separator 3122 maintains contact with or has a small gap with the outer periphery of both the first separator wheel 31411 and the second separator wheel 31421. The separator 3122 is positioned on the symmetrical center line of the first separator wheel 31411 and the second separator wheel 31421. When the separator 3122 rotates, its radial dimension changes in different directions will push the first separator wheel 31411 and the second separator wheel 31421 away from each other or allow them to move closer together under the action of the second elastic member 315.

[0065] Specifically, when the centering mold drive motor 3121 drives the separator 3122 to rotate until the short shaft contacts the separator wheel, the two ends of the short shaft of the separator 3122 are the mold closing ends 31221. At this time, the radial dimension of the separator 3122 in the direction perpendicular to the centering guide rail 313 is small, and the distance between the first separator wheel 31411 and the second separator wheel 31421 is small. The tension of the second elastic member 315 causes the first mold connecting member 3141 and the second mold connecting member 3142 to move closer to each other, and the first centering mold 3111 and the second centering mold 3112 are in the mold closing state. When the centering mold drive motor 3121 drives the separator 3122 to rotate 3° until the long shaft contacts the separator wheel, the two ends of the long shaft of the separator 3122 are the mold parting ends 31222. At this time, the radial dimension of the separator 3122 in the direction perpendicular to the centering guide rail 313 reaches its maximum. Its outer periphery pushes the first separator wheel 31411 and the second separator wheel 31421 to overcome the tension of the second elastic member 315 and move away from each other. The first mold connecting member 3141 and the second mold connecting member 3142 slide in opposite directions along the centering guide rail 313. The first centering mold 3111 and the second centering mold 3112 switch to the mold parting state.

[0066] In the above technical solution, on the one hand, the cam drive mechanism composed of the centering mold drive motor 3121 and the separator 3122 directly converts the rotational motion of the motor into the linear opening and closing motion of the centering mold 311. The transmission path is short and the response speed is fast. Moreover, the opening and closing degree of the centering mold 311 can be precisely adjusted by controlling the rotation angle of the motor, which can adapt to the centering requirements of materials 00 of different sizes. On the other hand, the rolling contact between the separator wheel and the separator 3122 significantly reduces frictional resistance and wear, ensuring smooth movement and positioning accuracy during long-term operation. In addition, the separator 3122 acts on the first separator wheel 31411 and the second separator wheel 31421 at the same time, ensuring that the first centering mold 3111 and the second centering mold 3112 always move in a completely symmetrical direction or opposite direction with the center of the carrier 11 as the reference. Structurally, this ensures that the material 00 under test is always in the center position after being clamped, without the need for additional position calibration, further simplifying the control logic and improving the centering efficiency.

[0067] As a further improvement of the present invention, the cross-section of the separator 3122 is elliptical, and its geometric center coincides with the output shaft axis of the centering mold drive motor 3121. The separator 3122 has a major axis and a minor axis that are perpendicular to each other, wherein the direction of the minor axis is the direction of the minimum radial dimension of the separator 3122, and the direction of the major axis is the direction of the maximum radial dimension of the separator 3122. In this embodiment, the separator 3122 adopts an elliptical cam, and its contour curve is a precise elliptical arc to ensure smooth and impact-free movement when the separator wheel contacts the separator 3122.

[0068] The two ends of the short axis of the separator 3122 are defined as the mold-closing ends 31221, and the two ends of the long axis are defined as the mold-parting ends 31222. Specifically, when the separator 3122 rotates to a position where the direction of its short axis is parallel to the line connecting the first separator wheel 31411 and the second separator wheel 31421, the contact point between the separator 3122 and the two separator wheels is located at the mold-closing ends 31221 at both ends of the short axis; when the separator 3122 rotates 90° to a position where the direction of its long axis is parallel to the line connecting the separator wheels, the contact point is located at the mold-parting ends 31222 at both ends of the long axis. It should be noted that in this embodiment, the mold-closing ends 31221 and the mold-parting ends 31222 are not independent components, but rather working sections on the outer periphery of the elliptical cam at specific angular positions.

[0069] When the first separator wheel 31411 and the second separator wheel 31421 abut against the mold closing end 31221, the radial dimension of the separator 3122 in the direction perpendicular to the centering guide rail 313 is equal to the length of its minor axis, and at this time the radial dimension is at its minimum value. The gap between the first separator wheel 31411 and the second separator wheel 31421 is released, and the tension of the second elastic element 315 drives the first mold connecting piece 3141 and the second mold connecting piece 3142 to move closer to each other along the centering guide rail 313, thereby driving the first centering mold 3111 and the second centering mold 3112 to close synchronously. During the mold closing process, the clamping surfaces of the first centering mold 3111 and the second centering mold 3112 apply force evenly from both sides, smoothly pushing the material to be tested 00 to the center position of the loading end 1121 and completing the centering clamping.

[0070] When the first separator wheel 31411 and the second separator wheel 31421 abut against the parting end 31222, the radial dimension of the separator 3122 in the direction perpendicular to the centering guide rail 313 is equal to the length of its major axis, and at this time the radial dimension is at its maximum value. The outer periphery of the separator 3122 pushes the first separator wheel 31411 and the second separator wheel 31421 away from each other against the tension of the second elastic member 315, and the first mold connector 3141 and the second mold connector 3142 slide in opposite directions along the centering guide rail 313, causing the first centering mold 3111 and the second centering mold 3112 to separate synchronously. After separation, the centering mold 311 completely releases the material to be tested 00, and the carrier 11 can carry the material to be tested 00 to continue to the next station.

[0071] In this embodiment, the separator 3122 is driven to rotate continuously by the centering mold drive motor 3121. Each rotation completes one cycle of mold closing and mold opening for the centering mold 311. Through precise angle control of the centering mold drive motor 3121, the separator 3122 can be precisely stopped at the angular position corresponding to the mold closing end 31221 or the mold opening end 31222, or it can stop at any angle in the middle, thereby adjusting the opening and closing degree of the centering mold 311 to accommodate test materials 00 of different sizes.

[0072] In the above technical solution, on the one hand, the radial dimension difference between the minor axis and major axis of the elliptical separator 3122 forms a clear cam lift, accurately converting the rotational motion of the centering mold drive motor 3121 into the linear opening and closing displacement of the centering mold 311. Furthermore, the opening and closing stroke is uniquely determined by the ellipse's eccentricity, resulting in a simple and reliable motion relationship. On the other hand, the mold closing end 31221 and the mold parting end 31222 correspond to the two orthogonal directions of the elliptical cam, respectively, allowing the switching between the mold closing and mold parting states of the centering mold 311 to be completed simply by rotating the drive motor by a few degrees, resulting in rapid response and accurate positioning. In addition, the separator 3122 maintains contact with both the first separator wheel 31411 and the second separator wheel 31421. Whether at the mold closing end 31221 or the mold parting end 31222, both separator wheels are effectively constrained by the separator 3122, preventing the second elastic element 315 from being overstretched in the mold parting state or from becoming loose and failing in the mold closing state. This ensures that the second elastic element 315 operates within a stable strain range for a long period, extending its service life.

[0073] As a further improvement to the present invention, please refer to Figure 6 The unloading station 50 includes an unloading assembly 51 for removing the tested material from the carrier 11. The unloading assembly 51 adopts a structure combining pneumatic blowing and a two-dimensional moving platform to achieve automated sorting and unloading of the material 00 to be tested based on the power-on test data. In this embodiment, the unloading assembly 51 is located outside the conveyor table 12 and cooperates with the position of the carrier 11 corresponding to the unloading station 50.

[0074] The feeding assembly 51 includes a blowing end 511, a discharging end 512, an X-axis moving part 513, a Y-axis moving part 514, and multiple feeding channels 515. The blowing end 511 and the discharging end 512 are interconnected, forming a blowing passage. In this embodiment, the blowing end 511 is an air inlet, connected to an external high-pressure air source via an air pipe. A solenoid valve is installed on the air source pipe, and its on / off state is controlled by the control system according to the sorting signal. The discharging end 512 is a discharging nozzle, with its outlet facing the tested material 00 on the loading end 1121. The blowing end 511 and the discharging end 512 are connected by a flexible hose or an internal flow channel to ensure that the air passage of the discharging end 512 remains unobstructed during movement.

[0075] The X-axis moving component 513 and the Y-axis moving component 514 constitute a two-dimensional orthogonal moving platform, used to drive the discharge end 512 to move along the X and Y axes to align with the unloading channels 515 at different positions. In this embodiment, the X-axis direction is parallel to the conveying direction of the conveyor table 12, the Y-axis direction is perpendicular to the conveying direction of the conveyor table 12, and the X and Y axes are orthogonal in the horizontal plane. Multiple unloading channels 515 are arranged sequentially along the X-axis direction on one side of the unloading station 50, each unloading channel 515 corresponding to a quality grade, used to collect the test-completed materials of the corresponding grade.

[0076] The X-axis moving component 513 includes an X-axis moving drive component 5131, an X-axis moving guide rail 5132, and an X-axis moving base 5133. The X-axis moving guide rail 5132 is fixedly mounted on the frame of the unloading station 50 along the X-axis direction, and the X-axis moving base 5133 is slidably disposed on the X-axis moving guide rail 5132. The X-axis moving drive component 5131 is used to drive the X-axis moving base 5133 to perform reciprocating linear motion along the X-axis moving guide rail 5132. In this embodiment, the X-axis moving drive component 5131 adopts a linear motor or a ball screw motor, and its mover or nut is fixedly connected to the X-axis moving base 5133. The moving position of the X-axis moving base 5133 is precisely controlled by the control system.

[0077] The Y-axis moving component 514 includes a Y-axis moving drive component 5141, a Y-axis moving guide rail 5142, and a Y-axis moving base 5143. The Y-axis moving guide rail 5142 is fixedly mounted on the X-axis moving base 5133 and moves together with the X-axis moving base 5133. The Y-axis moving base 5143 is slidably mounted on the Y-axis moving guide rail 5142. The discharge end 512 is fixedly mounted on the Y-axis moving base 5143 and moves together with the Y-axis moving base 5143. The Y-axis moving drive component 5141 is used to drive the Y-axis moving base 5143 to perform reciprocating linear motion along the Y-axis moving guide rail 5142. In this embodiment, the Y-axis moving drive component 5141 is a cylinder or a linear motor, with its cylinder body or stator fixed on the X-axis moving base 5133, and its piston rod or mover fixedly connected to the Y-axis moving base 5143.

[0078] When the carrier 11 at the unloading station 50 carries the tested material to the designated position, the control system determines the quality grade of the material 00 to be tested based on the power-on test data collected and judged by the testing station 40, and calculates the coordinate position of the corresponding unloading channel 515. The control system sends a command to the X-axis moving drive 5131, driving the X-axis moving seat 5133 to move along the X-axis moving guide rail 5132 to the X-axis coordinate position of the target unloading channel 515; simultaneously or subsequently, it sends a command to the Y-axis moving drive 5141, driving the Y-axis moving seat 5143 to extend forward along the Y-axis moving guide rail 5142, so that the discharge end 512 moves above the loading end 1121 and aligns with the material 00 to be tested. Then, the control system opens the solenoid valve of the blowing end 511, and high-pressure gas is ejected through the discharge end 512, blowing the tested material off the loading end 1121. The material falls into the corresponding unloading channel 515 under the push of the airflow along the guide of the discharge end 512. After the material is unloaded, the Y-axis moving drive 5141 drives the Y-axis moving seat 5143 to retract to its original position, and the X-axis moving drive 5131 moves to a new coordinate position according to the grade information of the next material to be tested 00, waiting to execute the next unloading action.

[0079] In the above technical solution, on the one hand, the two-dimensional orthogonal moving platform formed by the X-axis moving component 513 and the Y-axis moving component 514 enables a single discharge end 512 to cover multiple unloading channels 515 arranged along the X-axis, eliminating the need to set up a separate blowing mechanism for each channel, which significantly simplifies the structural layout of the unloading station 50 and reduces equipment cost and space occupation; on the other hand, the discharge end 512 is driven by the X-axis moving component 513 in the X-axis direction to achieve channel selection, and is driven by the Y-axis moving component 514 in the Y-axis direction to achieve approach and reset during blowing. The motion decoupling is clear, the control logic is simple, and the Y-axis moving component 514 is set on the X-axis moving seat 5133 to form a stacked motion structure, which effectively shortens the movement path and response time of the discharge end 512. In addition, the pneumatic blowing method is non-contact and wear-free, making it suitable for the rapid unloading of small or fragile test materials, avoiding secondary damage that may be caused by the robotic arm's gripping. At the same time, the blowing action is crisp and clean, and in conjunction with the high-speed positioning of the two-dimensional moving platform, the single action cycle of the unloading station 50 can be controlled within seconds, effectively ensuring the overall testing efficiency of the machine.

[0080] In some embodiments, the inner wall of the feeding channel 515 is made of a flexible material. Specifically, multiple feeding channels 650 correspond to test-completed materials of different quality grades, and each feeding channel 515 has an internal flow channel for material passage, with its inner wall surface made of a flexible material. In this embodiment, the flexible material can be a material with certain elasticity and cushioning properties, such as silicone, polyurethane foam, velvet, or a brush, and is fixed to the inner wall surface of the feeding channel 515 by means of pasting, nesting, or integral molding.

[0081] After the feeding assembly 51 completes its blowing action, the tested material is ejected from the discharge end 512 under the propulsion of high-pressure airflow and enters the corresponding feeding channel 515 with a certain initial velocity. Upon entering the channel, the material first contacts the flexible inner wall. The flexible material undergoes elastic deformation upon impact, absorbing the material's kinetic energy and transforming the rigid collision into a flexible buffer, allowing the material to slide along the inner wall of the channel into the bottom collection container. For flexible inner walls employing a brush structure, the brush filaments undergo elastic deformation as the material passes through, providing both buffering and guidance to prevent the material from bouncing or flying out within the channel.

[0082] By adopting the above technical solution, on the one hand, the flexible inner wall effectively absorbs the impact energy when the material enters the channel, avoiding damage caused by collisions between high-speed moving materials and the rigid channel wall. This is especially suitable for small-sized or fragile side-emitting devices, significantly reducing the scrap rate during the feeding process. On the other hand, the relatively low coefficient of friction between the flexible material and the material itself allows the material to slide smoothly within the channel, reducing the likelihood of jamming or accumulation and ensuring the continuity and stability of the sorting and feeding process. Furthermore, the flexible inner wall also has a good noise reduction effect, absorbing high-frequency noise generated during material impact and improving the acoustic environment during equipment operation.

[0083] As a further improvement to the present invention, please refer to Figures 7-8 The loading station 20 includes a hopper 21, a vibratory feeder 22, a loading track 23, and a loading assembly 24. The loading station 20 is located outside the conveyor table 12, on one side of the carrier 11 corresponding to the loading station 20. It is used to arrange the material to be tested 00 from a loose state in an orderly manner and place it accurately on the loading end 1121 of the carrier 11, providing a stable and reliable material foundation for subsequent alignment and testing processes.

[0084] The hopper 21 is used to store the material to be tested 00. In this embodiment, the hopper 21 is a funnel-shaped container with a discharge port at the bottom, which is connected to the feed end of the vibratory feeder 22. The capacity of the hopper 21 is designed to meet the requirements of continuous operation of the equipment for a certain period of time, reducing downtime due to frequent feeding. The inner wall of the hopper 21 may be equipped with an antistatic coating or a vibration auxiliary device to prevent the feeding of the small-sized material to be tested 00 from being interrupted due to static electricity or bridging.

[0085] The vibratory feeder 22 is used to orient the scattered test material 00 supplied by the hopper 21 and continuously output it to the feeding track 23. In this embodiment, the vibratory feeder 22 is a cylindrical electromagnetic vibratory feeder with a spirally rising conveying track on its inner wall. The track is equipped with a screening structure and a direction recognition mechanism. When the vibratory feeder 22 is working, it generates high-frequency micro-amplitude vibration, causing the test material 00 to gradually rise along the spiral track. During this process, materials that do not conform to the preset posture are screened out and fall back. Only the test material 00 arranged in the correct orientation and posture reaches the discharge port and enters the feeding track 23. The discharge speed of the vibratory feeder 22 is matched with the picking rhythm of the feeding component 24 to ensure that the feeding track 23 always has a sufficient but not piled-up supply of test material 00.

[0086] The feeding track 23 is used to receive the test material 00 output from the vibratory feeder 22 and guide it to the picking position of the feeding assembly 24. In this embodiment, the feeding track 23 is a straight slide, the width of which is adapted to the size of the test material 00, allowing only one test material 00 to pass through sequentially. The end of the feeding track 23 is provided with a positioning groove or photoelectric sensor, which is used to detect whether the test material 00 is in place and feed back to the control system of the feeding assembly 24, ensuring that the test material 00 is in the precise gripping position each time the feeding head 241 picks up the material.

[0087] The loading assembly 24 is used to place the test material 00 on the loading track 23 onto the carrier 11. In this embodiment, the loading assembly 24 includes at least one loading head 241, each loading head 241 being used to adsorb one test material 00. The loading head 241 adopts a vacuum adsorption method, and its lower end is provided with a suction nozzle, the material of which is rubber, polyurethane, or metal, selected according to the surface characteristics and size of the test material 00. The loading head 241 is connected to a vacuum generator through an air pipe, and the control system controls the vacuum on and off through a solenoid valve to realize the adsorption and release of the test material 00.

[0088] In some embodiments, the feeding assembly 24 includes two feeding heads 241, which are arranged side by side on the same mounting plate and can move synchronously to achieve simultaneous picking and placing of two materials, significantly improving feeding efficiency. The feeding assembly 24 also includes a picking and placing drive mechanism for driving the feeding heads 241 to move. This mechanism can be a linear module, a cylinder, or a multi-axis robot. Specifically, the picking and placing drive mechanism includes an X-axis picking and placing drive component, a Y-axis picking and placing drive component, and a Z-axis picking and placing drive component, which drive the feeding heads 241 to move in three dimensions between the picking position of the feeding track 23 and the placing position of the carrier 11. When the carrier 11 moves to the loading station 20 and stops along with the conveyor 12, the control system issues a material handling command. The loading head 241 moves to the end of the loading track 23, and the vacuum is activated to adsorb the material to be tested 00. Then, the loading head 241 is raised and moved directly above the loading end 1121, descends to the set height, and the vacuum is closed to release the material to be tested 00, accurately placing it into the positioning slot of the loading end 1121. After placement, the loading head 241 resets, waiting for the next material handling action.

[0089] To improve the feeding accuracy, in this embodiment, the loading end 1121 is provided with a positioning groove or positioning pin that matches the shape of the material to be tested 00. When the loading head 241 releases the material to be tested 00, the material automatically falls into the predetermined position under the guidance of gravity and positioning structure, providing a good foundation for the high-precision automatic centering of the subsequent centering station 30.

[0090] In the above technical solution, on the one hand, the combination of the hopper 21, vibratory feeder 22, and feeding track 23 realizes the automated process of feeding the test material 00 from bulk to orderly. The directional screening function of the vibratory feeder 22 ensures that each test material 00 enters the feeding station 20 in the correct posture, avoiding the inefficiency and misoperation of manual arrangement. On the other hand, the feeding component 24 uses vacuum adsorption to pick up and place materials. The adsorption process is gentle and without damage. Moreover, with at least one feeding head 241, single-head picking and placing or double-head synchronous picking and placing can be flexibly configured according to production capacity requirements, maximizing feeding efficiency while ensuring placement accuracy. In addition, the cooperation between the feeding head 241 and the positioning structure of the carrier 11 ensures that the test material 00 has a preliminary positional consistency before entering the centering station 30, effectively reducing the adjustment stroke and clamping force requirements of the subsequent mechanical centering component 31. This not only improves the overall machine operating speed but also reduces the wear risk of the centering mold 311.

[0091] As a further improvement of the present invention, the testing and sorting equipment that places LEDs inside an integrating sphere also includes a vision inspection station 60. The vision inspection station 60 is located outside the conveyor table 12, between the loading station 20 and the centering station 30, and is arranged sequentially along the conveying direction of the conveyor table 12. The vision inspection station 60 is used to acquire images and identify the position of the material to be tested on the carrier 11 after loading and before centering and clamping, providing visual guidance and quality judgment for subsequent centering and testing processes.

[0092] The visual inspection station 60 includes a visual inspection bracket 61 and a visual inspection component 62 mounted on the bracket 61. The visual inspection bracket 61 is fixedly installed on the equipment frame, and its height and installation angle can be adjusted according to the size of the material to be tested and the inspection requirements. The inspection end of the visual inspection component 62 faces the carrier 11; specifically, the inspection end is vertically downward or at a certain tilt angle aligned with the material to be tested placed on the loading end 1121. In this embodiment, the visual inspection component 62 uses an industrial camera, in conjunction with a ring light source or a coaxial light source, to ensure that clear, high-contrast images of the material to be tested can be acquired under different ambient lighting conditions. The visual inspection component 62 is electrically connected to the control system and is used to transmit the acquired image data to the image processing unit in real time.

[0093] When the carrier 11 moves to the vision inspection station 60 along with the conveyor 12 and stops, the vision inspection unit 60 triggers an image capture to obtain the position, orientation, and appearance of the material to be tested on the loading end 1121. The image processing unit analyzes the acquired image to identify the center coordinates, angular offset, and any abnormalities such as missing material, reverse orientation, or damage of the material to be tested. The detection results are used to generate alignment compensation parameters, which are transmitted to the control system of the alignment station, enabling the mechanical alignment component 31 to make precise adjustments based on the actual offset. They are also used for defect marking; if a significant defect is detected in the material to be tested, the control system can skip subsequent testing processes and directly remove it at the unloading station, avoiding unnecessary testing that consumes equipment resources.

[0094] By adopting the above technical solutions, on the one hand, the visual inspection station 60 introduces image recognition after material loading and before centering, realizing non-contact precise measurement of the position and orientation of the material to be tested (00). This provides feedforward compensation information for the mechanical centering components, enabling the centering mold 311 to adaptively adjust according to the actual offset, further improving the accuracy and adaptability of automatic centering. On the other hand, visual inspection simultaneously completes online screening of the incoming material's appearance quality, allowing for early identification and rejection of defective products, preventing them from entering subsequent testing stages. This saves testing time and energy, and prevents probe contamination or damage due to defective materials, effectively improving equipment operating efficiency and reliability. Furthermore, the introduction of the visual inspection station 60 enables the equipment to have closed-loop quality control capabilities, with inspection data uploaded to the production management system in real time, providing data support for process optimization and quality traceability.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A testing and sorting device that places LEDs inside an integrating sphere, characterized in that, include: A material transfer assembly includes a carrier for loading the material to be tested and a conveyor for conveying the carrier; The loading station is used to place the material to be tested onto the carrier; The centering station includes a mechanical centering assembly, which includes a centering mold and a centering mold drive for moving the centering mold. The centering mold is used to clamp the material to be tested, and the centering mold drive is used to drive the centering mold to move so that the material to be tested is centered on the carrier. The test station is used to measure the electrical test data of the material under test. It includes an integrating sphere, a probe base and a lifting assembly. The probe base is located inside the integrating sphere and includes a probe. The lifting assembly is used to push the carrier upward so that the material under test enters the interior of the integrating sphere and abuts against the probe. The unloading station is used to sort the tested materials from the carrier based on the power-on test data.

2. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 1, characterized in that, The conveyor platform is circular, and there are twelve carriers. The twelve carriers are distributed at intervals on the conveyor platform. The loading station, the centering station, the testing station, and the unloading station are respectively located on the outside of the conveyor platform and arranged sequentially along the conveying direction of the conveyor platform.

3. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 1, characterized in that, The vehicle includes a fixed vehicle and a movable vehicle movably connected to the fixed vehicle; The movable carrier includes a loading end, a pushing end, and a movable shaft connecting the loading end and the pushing end. The movable shaft is sleeved inside the fixed carrier, and a first elastic element is sleeved on the movable shaft. The two ends of the first elastic element abut against the fixed carrier and the pushing end, respectively. The lifting assembly pushes the pushing end so that the loading end enters the interior of the integrating sphere.

4. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 3, characterized in that, The lifting assembly includes a lifting drive component, a lifting guide rail, a lifting slider, a lifting swing arm, and a lifting head; The lifting arm connects the lifting drive and the lifting slider. The lifting slider is slidably mounted on the lifting guide rail. The lifting head is provided at the end of the lifting slider facing the carrier. The lifting drive drives the lifting arm to swing, causing the lifting slider to slide along the lifting guide rail so that the lifting head pushes the pushing end upward.

5. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 1, characterized in that, The mechanical centering assembly also includes a centering guide rail, on which a mold connector is slidably connected. The mold connector is connected to the centering mold, and the mold connector drives the centering mold to move along the centering guide rail.

6. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 5, characterized in that, The centering mold includes a first centering mold and a second centering mold arranged opposite to each other; The mold connector includes a first mold connector and a second mold connector. The first mold connector is connected to the first centering mold, and the second mold connector is connected to the second centering mold. A second elastic element is connected to both the first mold connector and the second mold connector. The second elastic element is arranged parallel to the centering guide rail.

7. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 6, characterized in that, The centering mold drive includes a centering mold drive motor and a partition connected to the output shaft of the centering mold drive motor. The centering mold drive motor is used to drive the partition to rotate. The first mold connector is provided with a first dividing wheel, and the second mold connector is provided with a second dividing wheel. The straight line where the first dividing wheel and the second dividing wheel are located is parallel to the centering guide rail. The separator is located between the first separator wheel and the second separator wheel.

8. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 7, characterized in that, The cross-section of the separator is elliptical. The two ends of the short axis of the separator are the mold closing ends, and the two ends of the long axis of the separator are the mold parting ends. When the first separator wheel and the second separator wheel abut against the mold closing ends, the first centering mold and the second centering mold close. When the first separator wheel and the second separator wheel abut against the mold parting ends, the first centering mold and the second centering mold part.

9. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 1, characterized in that, The unloading station includes an unloading assembly for removing the tested material from the carrier. The unloading assembly includes a blowing end, an outlet end, an X-axis moving part, a Y-axis moving part, and multiple unloading channels. The blowing end and the discharge end are connected to each other. The X-axis moving part and the Y-axis moving part are used to drive the discharge end to move along the X-axis / Y-axis to align with the discharge channel. The X-axis moving component includes an X-axis moving drive, an X-axis moving guide rail, and an X-axis moving base. The X-axis moving drive is used to drive the X-axis moving base to move along the X-axis moving guide rail. The Y-axis moving component includes a Y-axis moving drive, a Y-axis moving guide rail, and a Y-axis moving base. The Y-axis moving guide rail is disposed on the Y-axis moving base, and the discharge end is disposed on the Y-axis moving base. The Y-axis moving drive is used to drive the Y-axis moving base to move along the Y-axis.

10. The testing and sorting device for placing LEDs inside an integrating sphere as described in claim 1, characterized in that, The loading station includes a hopper, a vibratory feeder, a loading track, and a loading assembly for placing the material to be tested on the loading track onto the carrier. The loading assembly includes at least one loading head, and each loading head is used to adsorb one of the materials to be tested.

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