A multi-track test transmission and sorting structure for MLCCs

Abstract

This invention relates to a multi-track testing, conveying, and sorting structure for MLCCs, belonging to the field of capacitor testing technology. It includes a base frame and a feeding mechanism, a testing mechanism, a conveying mechanism, and a sorting mechanism mounted on the base frame. The feeding mechanism places the workpieces into the conveying mechanism, which rotates sequentially on the base frame, passing through the testing mechanism, the sorting mechanism, and the feeding mechanism. The testing mechanism tests the workpieces, and the sorting mechanism classifies and sorts the workpieces based on the test results. This invention features multiple testing stations corresponding to a single tray, which not only reduces equipment costs but also ensures that each chip capacitor completes testing in a short time, thereby improving testing efficiency. The negative pressure system applies a stable suction force to the chip capacitors through a vacuum tank and suction holes on the tray, ensuring they remain in a fixed position during testing. As the tray's rotation speed increases, the negative pressure system should automatically adjust the negative pressure intensity to ensure the quality of workpiece testing.

Description

Technical Field

[0001] This invention belongs to the field of capacitance testing technology, specifically relating to a multi-track testing, conveying, and sorting structure for MLCCs. Background Technology

[0002] In the field of electronic component manufacturing, multilayer ceramic chip capacitors (MLCCs) are indispensable electronic components, widely used in mobile phones, computers, automotive electronics, and various consumer electronics products. With the rapid iteration and performance improvement of electronic products, the demand for MLCCs has increased dramatically, while simultaneously placing higher demands on product quality and testing efficiency. Traditional MLCC testing methods often employ single-track testing machines, testing only one product at a time. While this approach can meet basic testing needs, its slow testing speed and low efficiency become increasingly apparent when facing large-scale production, becoming a key factor restricting capacity expansion.

[0003] Existing single-track testing mechanisms mostly consist of one testing station corresponding to one transmission mechanism. Traditional single-track testing machines have slow testing speeds, while the transmission mechanisms are relatively expensive. Therefore, MLCC single-track testing not only suffers from low testing efficiency but also high costs.

[0004] Single-track testing is slow, with a testing speed of only 55K pieces / hour. MLCCs, however, can achieve a speed of 360K pieces / hour through 4-track testing. While multi-track testing improves testing efficiency, ensuring product testing quality in a high-speed testing environment remains crucial.

[0005] Therefore, there is an urgent need for a multi-track test drive sorting structure that can reduce costs and improve testing efficiency. Summary of the Invention

[0006] To address the aforementioned problems in the existing technology, this invention provides a multi-track test transmission and sorting structure for MLCCs, solving the problem that existing MLCCs are tested on a single track and have low testing efficiency.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A multi-track testing, conveying, and sorting structure for MLCCs includes a base frame and a loading mechanism, a detection mechanism, a drive system, a conveying mechanism, and a sorting mechanism mounted on the base frame. The loading mechanism places the workpieces into the conveying mechanism, which rotates sequentially on the base frame, passing through the detection mechanism, the sorting mechanism, and the loading mechanism. The detection mechanism detects the workpieces, and the sorting mechanism classifies and sorts the workpieces based on the detection results.

[0009] The transmission mechanism includes a vacuum mounting base, a vacuum ring, and a material tray. The vacuum mounting base is fixedly mounted on the base frame, the vacuum ring is fixedly mounted on the vacuum mounting base, and the material tray is rotatably mounted on the vacuum ring. The material tray has a plurality of material slots arranged in a circumferential array, and the vacuum ring is provided with a vacuum slot. The vacuum slot is located between the detection mechanism and the feeding mechanism, and the vacuum slot and any of the material slots are connected through a suction hole provided on the material tray. The vacuum slot generates negative pressure through a negative pressure system, and the material tray is driven to rotate by the drive system. The negative pressure system is electrically connected to the drive system, and the negative pressure intensity is adjusted by the rotation speed of the material tray.

[0010] The testing mechanism is equipped with several testing stations; the ratio of the scale values ​​of adjacent material tanks and adjacent testing stations is 1:N; N is an integer.

[0011] Preferably, the material trough is provided in at least 4 rings, with the same number of material troughs in any ring, and the material troughs in any ring are aligned from the inside to the outside.

[0012] Preferably, the detection mechanism includes an upper detection component and a lower detection component. The vacuum ring is provided with a detection area. The upper detection component and the lower detection component are located in the detection area. The upper detection component abuts against the upper part of the material tray, and the lower detection component abuts against the material tray from the bottom. Each detection station is provided with an upper detection component and a lower detection component.

[0013] Preferably, the upper detection component includes a test mounting base and a plurality of test insulating bases; the plurality of test insulating bases are arranged in an array along the rotation direction of the material tray on the test mounting base; a test wheel seat is provided at the bottom of each of the test insulating bases, and the bottom of the test wheel seat abuts against the top of the material tray; the number of test wheel seats corresponds to the number of revolutions in the material trough.

[0014] Preferably, the lower detection assembly includes a lower test base, a plurality of lower test probe holders, a lower test probe, and a plurality of lower test electrodes; the lower test base is mounted on the vacuum mounting base, the plurality of lower test electrodes are arranged in an array along the rotation direction of the material tray on the lower test base, any one of the lower test electrodes is mounted on the vacuum ring and abuts against the bottom of the material trough; the lower test probe holder corresponds to the lower test electrode, the lower test electrode is mounted on the lower test base, and the lower test probe connects the lower test electrode and the lower test probe holder.

[0015] Preferably, the system further includes a sorting hole group, which is disposed on the vacuum mounting base and the vacuum ring; the sorting mechanism includes a sorting frame, a sorting connector, and a sorting tube; the sorting frame is fixedly disposed on the base frame and located on top of the material tray, the sorting connector is disposed on the sorting frame and corresponds to the sorting hole group, the sorting hole group is connected to an air blowing assembly, the air blowing assembly blows air into the sorting holes based on the detection result of the detection mechanism, and sorts the workpieces from the material tray into the sorting connector; the sorting tube is detachably connected to the sorting connector, and the sorting tube transports the workpieces from the sorting connector to the storage location; the sorting connector includes at least two sets, the number of turns of any set of sorting connectors corresponds to the number of turns of the material trough, and the number of stations of any set of sorting connectors corresponds to the number of stations of the detection mechanism.

[0016] Preferably, the feeding mechanism includes a feeding bin, a feeding frame, and a screening rod; the feeding bin is located at the top of the feeding frame, and the workpiece slides from the feeding bin to the feeding frame; the feeding frame is set on the base frame, and the feeding frame is provided with a number of feeding troughs corresponding to the number of material trough circles; the screening rod is set on the feeding frame and abuts against the material tray; along the direction of rotation of the material tray, the screening rod is located at the front end of the feeding trough, and is used to sequentially screen several workpieces in the feeding trough to the material trough.

[0017] Preferably, the drive system includes a drive motor, drive gears, transmission gears, a transmission belt, and a transmission shaft; the drive motor is mounted on the base frame via a mounting plate, the drive gears are coaxially connected to the output shaft of the drive motor, the drive gears and the transmission gears are connected via the transmission belt, the transmission shaft is coaxially connected to the transmission gears and connected to the material tray from the bottom of the material tray; the drive motor is electrically connected to the negative pressure system.

[0018] The beneficial effects of this invention are as follows:

[0019] The material tray of this invention rotates to bring the chip capacitors in each slot to each testing station. The drive system increases the rotation speed of the material tray, and one material tray corresponds to multiple testing stations. This not only reduces equipment costs but also ensures that each chip capacitor is tested in a short time, thereby improving testing efficiency. The negative pressure system applies a stable suction force to the chip capacitors through the vacuum tank and suction holes on the material tray to ensure that they remain in a fixed position during the testing process. As the rotation speed of the material tray increases, the negative pressure system should be able to automatically adjust the negative pressure intensity to ensure the testing quality of the workpiece. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1This is a three-dimensional structural diagram of the conveying and sorting structure provided in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a vacuum ring structure provided in one embodiment of the present invention;

[0023] Figure 3 This is a partial cross-sectional view of the vacuum tank provided in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the drive system connection structure provided in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the upper detection component structure provided in one embodiment of the present invention;

[0026] Legend: 1. Base frame; 2. Feeding mechanism; 3. Detection mechanism; 31. Upper detection component; 311. Test mounting base; 312. Test insulation base; 313. Test wheel base; 32. Lower detection component; 321. Lower test base; 322. Test probe base; 323. Lower test electrode; 324. Lower test probe; 4. Transmission mechanism; 41. Vacuum mounting base; 42. Vacuum ring; 421. Vacuum tank; 43. Material tray; 431. Material trough; 5. Sorting mechanism; 51. Sorting rack; 52. Sorting connector; 6. Drive system; 61. Drive motor; 62. Drive gear; 63. Transmission gear; 64. Transmission belt; 65. Transmission shaft; 7. Sorting hole group; 8. Negative pressure system. Detailed Implementation

[0027] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0028] like Figures 1-5As shown, a multi-track testing, conveying, and sorting structure for MLCCs includes a base frame 1 and a loading mechanism 2, a detection mechanism 3, a drive system 6, a transmission mechanism 4, and a sorting mechanism 5, all mounted on the base frame 1. The loading mechanism 2 places the workpieces into the transmission mechanism 4, which then rotates sequentially on the base frame 1, passing through the detection mechanism 3, the sorting mechanism 5, and the loading mechanism 2. The detection mechanism 3 inspects the workpieces, and the sorting mechanism 5 classifies and sorts the workpieces based on the inspection results. First, the loading mechanism 2 places the MLCC workpieces to be inspected one by one or in batches onto the transmission mechanism 4. The transmission mechanism 4 then receives the workpieces from the loading mechanism 2 using a rotating method. The workpiece is sequentially conveyed to the inspection mechanism 3, the sorting mechanism 5, and finally returned to the loading mechanism 2. When the workpiece rotates to the inspection mechanism 3 along with the conveying mechanism 4, the inspection mechanism 3 will perform a series of predetermined tests on the workpiece. These tests include electrical performance tests (such as capacitance value and insulation resistance). After the tests are completed, the workpiece continues to rotate to the sorting mechanism 5 along with the conveying mechanism 4. The sorting mechanism 5 classifies and sorts the workpieces according to the test results of the inspection mechanism 3. The entire testing, conveying, and sorting process is a cyclical process. When the last workpiece is sorted, the conveying mechanism 4 will return to the loading mechanism 2 to prepare to receive the next batch of workpieces to be inspected.

[0029] The transfer mechanism 4 includes a vacuum mounting base 41, a vacuum ring 42, and a material tray 43. The vacuum mounting base 41 is fixedly mounted on the base frame 1, the vacuum ring 42 is fixedly mounted on the vacuum mounting base 41, and the material tray 43 is rotatably mounted on the vacuum ring 42. The material tray 43 has a plurality of material slots 431 arranged in a circular array, and the vacuum ring 42 is provided with a vacuum groove 421. The vacuum groove 421 is located between the detection mechanism 3 and the feeding mechanism 2, and the vacuum groove 421 and any material slot 431 are connected through a suction hole provided on the material tray 43. The vacuum groove 421 generates negative pressure through the negative pressure system 8, and the material tray 43 is driven to rotate by the drive system 6. The negative pressure system 8 is electrically connected to the drive system 6. The negative pressure system 8 adjusts the negative pressure intensity according to the rotation speed of the material tray 43. The material tray 43 is rotatably mounted on the vacuum ring 42 and can rotate around its center point. Several material slots 431 are distributed in a circumferential array on the material tray 43, each material slot 431 is used to hold one MLCC workpiece. The vacuum ring 42 is provided with a vacuum slot 421, which is located between the detection mechanism 3 and the loading mechanism 2 to ensure that the workpiece can be stably adsorbed when passing through these areas. The suction holes are connected to the vacuum slots 421 to form a negative pressure channel. When the negative pressure system 8 is working, air is drawn out through these suction holes, thereby generating negative pressure in the material slots 431. The negative pressure system 8 generates negative pressure through the pipes connected to the vacuum slots 421. This negative pressure acts on the workpiece in the material slots 431 through the suction holes on the material tray 43, so that it is stably adsorbed in the material slots 431. The negative pressure system 8 is electrically connected to the drive system 6 and can automatically adjust the negative pressure intensity according to the rotation speed of the material tray 43. Specifically, as the rotational speed of the material tray 43 increases, the negative pressure system 8 correspondingly increases the negative pressure intensity to ensure that the workpiece will not fall off or shift during high-speed rotation. Through the negative pressure generated by the negative pressure system 8, the workpiece can be firmly adsorbed within the material trough 431, maintaining its position even during high-speed rotation, greatly improving workpiece stability and laying a solid foundation for workpiece inspection. The negative pressure system 8 can automatically adjust the negative pressure intensity according to the rotational speed of the material tray 43, ensuring stable transmission of the workpiece even under high-speed rotation, thereby improving the efficiency of the entire production line.

[0030] The testing mechanism 3 is equipped with several testing stations; the ratio of the graduation value of adjacent material tanks 431 to adjacent testing stations is 1:N; N is an integer; in this way, every time the material tray 43 rotates, the material tank 431 can correspond with the testing mechanism 3 and complete the testing, avoiding missed detection and improving the accuracy and quality of testing;

[0031] In summary, the material tray 43 rotates to bring the chip capacitors in each material slot 431 to each testing station. The drive system 6 increases the rotation speed of the material tray 43 to ensure that each chip capacitor is tested in a short time, thereby improving testing efficiency. With the increased rotation speed of the material tray 43, the performance of the negative pressure system 8 needs to be optimized to prevent the chip capacitors from shifting or falling during high-speed rotation. The negative pressure system 8 applies a stable suction force to the chip capacitors through the vacuum slot 421 and the suction holes on the material tray 43, ensuring they remain in a fixed position during testing. As the rotation speed of the material tray 43 increases, the negative pressure system 8 should be able to automatically adjust the negative pressure intensity to compensate for any decrease in suction force due to the increased rotation speed. This can be achieved by integrating a pressure sensor and controller into the negative pressure system 8 to monitor and adjust the negative pressure value in real time, ensuring sufficient suction force at any rotation speed.

[0032] In summary, by adjusting the rotation speed of the material tray 43, optimizing the negative pressure system 8, improving the detection speed and accuracy of the detection mechanism 3, and automating and intelligentizing the detection process, it can be ensured that the detection process of chip capacitors remains efficient, accurate, and stable even after increasing the number of detection stations.

[0033] In one embodiment, the feed troughs 431 are arranged in at least four rings, with the same number of feed troughs 431 in any ring, and the feed troughs 431 in any ring are aligned from the inside out. The design of multiple rings of feed troughs 431 allows more MLCC workpieces to be in the inspection area at the same time, thereby increasing the possibility of parallel inspection. Each ring of feed troughs 431 can be used as an independent inspection unit. When the workpieces in one ring of feed troughs 431 are being inspected, the feed troughs 431 in other rings can continue to load or prepare for the next batch of workpieces, which greatly improves the overall inspection efficiency. By setting the feed troughs 431 to be multiple rings with the same number and aligned arrangement, the space of the transfer mechanism 4 can be maximized. This compact design not only reduces the floor space but also makes the equipment more compact and stable, which is conducive to achieving an efficient inspection process in a limited space. The continuous arrangement and consistent number of feed troughs 431 ensure the continuity of the inspection process. Once the workpiece in one ring of feed troughs 431 has been inspected, the workpiece in the next ring of feed troughs 431 immediately enters the inspection area, reducing waiting time and improving the smoothness of the inspection process. In the design of multiple rings of feed troughs 431, each ring of feed troughs 431 is precisely manufactured and installed, ensuring alignment and consistency between the feed troughs 431. This high-precision design helps reduce inspection errors caused by workpiece position deviations, improving the accuracy and reliability of inspection. In summary, the design of having at least four rings of feed troughs 431, with each ring having the same number and alignment, significantly promotes rapid inspection. This design not only improves inspection efficiency and accuracy but also optimizes space utilization and inspection continuity, making the MLCC multi-track test transfer and sorting structure more efficient, stable, and reliable.

[0034] In one embodiment, the testing mechanism 3 includes an upper testing component 31 and a lower testing component 32. A testing area is provided in the vacuum ring 42. The upper testing component 31 and the lower testing component 32 are located within the testing area. The upper testing component 31 abuts against the upper tray 43, and the lower testing component 32 abuts against the tray 43 from the bottom. Each testing station is equipped with one upper testing component 31 and one lower testing component 32. When a workpiece passes through a testing station, both the upper testing component 31 and the lower testing component 32 contact the workpiece and form a closed current loop, thereby enabling the testing of the workpiece's withstand voltage and insulation properties. In summary, the design of the testing mechanism 3, including the upper testing component 31 and the lower testing component 32, improves testing accuracy and efficiency through the simultaneous upper and lower testing principle, and also enhances the adaptability and space utilization of the equipment. This design is of great significance for improving the overall performance and product quality of MLCC multi-track testing, conveying, and sorting structures.

[0035] In one embodiment, the upper detection component 31 includes a test mounting base 311 and a plurality of test insulating seats 312. The plurality of test insulating seats 312 are arranged in an array along the rotation direction of the material tray 43 on the test mounting base 311. Each test insulating seat 312 has a test wheel seat 313 at its bottom, with the bottom of the test wheel seat 313 abutting against the top of the material tray 43. The number of test wheel seats 313 corresponds to the number of revolutions in the material trough 431. The test mounting base 311 is fixed, while the plurality of test insulating seats 312 are arranged in an array along the rotation direction of the material tray 43. This arrangement allows each test insulating seat 312 to sequentially correspond to the material on the material tray 43 as the material tray 43 rotates. The bottom of the test wheel seat 313 abuts tightly against the top of the material tray 43, ensuring a stable contact state during rotation, so as to form a closed loop with the lower test component and the workpiece to complete the detection. Since the number of test insulating seats 312 corresponds to the number of revolutions in the material trough 431, simultaneous or sequential detection at multiple stations can be achieved. This means that during the rotation of the material tray 43, multiple materials can undergo different testing items at different workstations simultaneously, greatly improving testing efficiency and accuracy.

[0036] In one embodiment, the lower detection component 32 includes a lower test base 321, a plurality of test pin holders 322, a lower test pin 324, and a plurality of lower test electrodes 323. The lower test base 321 is mounted on a vacuum mounting base 41. The plurality of lower test electrodes 323 are arranged in an array along the rotation direction of the material tray 43 on the lower test base 321. Any one of the lower test electrodes 323 is mounted on a vacuum ring 42 and abuts against the bottom of the material trough 431. The test pin holders 322 correspond to the lower test electrodes 323. The lower test electrodes 323 are mounted on the lower test base 321. The lower test pins 324 connect the lower test electrodes 323 and the test pin holders 322. The lower test base 321 is mounted on the vacuum mounting base 41 so that the lower test pins 324 can contact the upper detection wheel seat and the workpiece to form a closed loop, thereby completing the electrical performance testing of the workpiece. As a key component connecting the lower test electrode 323 and the test needle holder 322, the lower test needle 324 can accurately contact the bottom of the material during the detection process and directly measure the electrical characteristics (such as resistance and capacitance) of the material. The lower test needle 324 is connected to the lower test electrode 323 through the test needle holder 322, and can accurately contact the material at the bottom of the material tank 431 to perform high-precision electrical or physical characteristic detection. This direct contact method reduces interference in signal transmission and improves the accuracy of detection.

[0037] In one embodiment, the system further includes a sorting hole group 7, which is disposed on the vacuum mounting base 41 and the vacuum ring 42; the sorting mechanism 5 includes a sorting frame 51, a sorting connector 52, and a sorting tube; the sorting frame 51 is fixedly disposed on the base frame 1 and located on top of the material tray 43, the sorting connector 52 is disposed on the sorting frame 51 and corresponds to the sorting hole group 7, the sorting hole group 7 is connected to an air blowing assembly, the air blowing assembly blows air into the sorting holes based on the detection result of the detection mechanism 3, and sorts the workpieces from the material tray 43 into the sorting connector 52; the sorting tube is detachably connected to the sorting connector 52, and the sorting tube transports the workpieces from the sorting connector 52 to the storage location; the sorting connector 52... It includes at least two sets, with the number of turns of any sorting connector 52 corresponding to the number of turns of the material tray 431, and the number of stations of any sorting connector 52 corresponding to the number of stations of the detection mechanism 3. The blowing assembly blows air into the corresponding sorting holes, lifting unqualified workpieces from the material tray 43 and guiding them to the sorting connector 52. Based on the detection results, the blowing assembly is controlled to blow air into the corresponding sorting holes, and the airflow generated separates the products into qualified and unqualified products, lifting them from the material tray 43 and guiding them to the sorting connector 52. The sorting connector 52 is internally or externally connected to a sorting tube, which is detachably connected to the sorting connector 52 for easy replacement and maintenance. The sorting tube transports the received workpieces to designated storage locations, such as qualified product collection boxes or unqualified product rejection areas.

[0038] In one embodiment, the feeding mechanism 2 includes a feeding bin, a feeding frame, and a screening rod. The feeding bin is located at the top of the feeding frame. Workpieces slide from the feeding bin to the feeding frame. The feeding frame is set on the base frame 1 and has a number of feeding troughs 431 corresponding to the number of rotations of the material troughs 431. The screening rod is set on the feeding frame and abuts against the material tray 43. Along the direction of rotation of the material tray 43, the screening rod is located at the front end of the feeding troughs 431 and is used to sequentially screen several workpieces in the feeding troughs 431 to the material troughs 431. The workpieces are first placed in the feeding bin located at the top of the feeding frame. Due to gravity, the workpieces will slide naturally along the inclined surface or slide rail of the feeding bin. The feeding mechanism moves to the lower feeding rack; the feeding rack is designed with a number of feeding troughs 431 corresponding to the number of rotations of the material tray 43. Each feeding trough 431 is responsible for supplying workpieces to the corresponding material trough 431, ensuring the orderliness and directionality of the workpieces during the feeding process; the screening rod is set on the feeding rack and is located at the front end of the feeding trough 431 along the direction of rotation of the material tray 43; the function of the screening rod is to separate the multiple workpieces piled up in the feeding trough 431 one by one and guide them to fall into the material trough 431 below one by one; in summary, the feeding mechanism 2 in this embodiment achieves the purpose of placing one workpiece in each material trough 431 through careful setting and layout.

[0039] In one embodiment, the drive system 6 includes a drive motor 61, a drive gear 62, a transmission gear 63, a transmission belt 64, and a transmission shaft 65. The drive motor 61 is mounted on the base frame 1 via a mounting plate. The drive gear 62 is coaxially connected to the output shaft of the drive motor 61. The drive gear 62 and the transmission gear 63 are connected via the transmission belt 64. The transmission shaft 65 is coaxially connected to the transmission gear 63 and extends from the bottom of the material tray 43 to the material tray 43. The drive motor 61 is electrically connected to the negative pressure system 8. The output shaft of the drive motor 61 is coaxially connected to the drive gear 62. As the motor rotates, the drive gear 62 and the transmission gear 63 are connected by a transmission belt 64. When the drive gear 62 rotates, the friction of the transmission belt 64 drives the transmission gear 63 to rotate synchronously. The transmission gear 63 is coaxially connected to the transmission shaft 65, so the rotation of the transmission gear 63 will drive the transmission shaft 65 to rotate together. The transmission shaft 65 is connected to the bottom of the material tray 43, and directly transmits the rotational force to the material tray 43. The material tray 43 starts to rotate under the drive of the transmission shaft 65, thereby moving or positioning the workpiece on it.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A multi-track test, conveying, and sorting structure for MLCCs, characterized in that, The system includes a base frame and a loading mechanism, a detection mechanism, a drive system, a transmission mechanism, and a sorting mechanism mounted on the base frame. The loading mechanism places the workpiece into the transmission mechanism, which rotates sequentially on the base frame, passing through the detection mechanism, the sorting mechanism, and the loading mechanism. The detection mechanism detects the workpiece, and the sorting mechanism classifies and sorts the workpiece according to the detection results. The transmission mechanism includes a vacuum mounting base, a vacuum ring, and a material tray. The vacuum mounting base is fixedly mounted on the base frame, the vacuum ring is fixedly mounted on the vacuum mounting base, and the material tray is rotatably mounted on the vacuum ring. The material tray has a plurality of material slots arranged in a circumferential array, and the vacuum ring is provided with a vacuum slot. The vacuum slot is located between the detection mechanism and the feeding mechanism, and the vacuum slot and any of the material slots are connected through a suction hole provided on the material tray. The vacuum slot generates negative pressure through a negative pressure system, and the material tray is driven to rotate by the drive system. The negative pressure system is electrically connected to the drive system, and the negative pressure intensity is adjusted by the rotation speed of the material tray. The testing mechanism is equipped with several testing stations; the ratio of the graduation values ​​of adjacent material tanks and adjacent testing stations is 1:N; where N is an integer. It also includes a sorting hole group, which is disposed on the vacuum mounting base and the vacuum ring; the sorting mechanism includes a sorting frame, a sorting connector, and a sorting tube; the sorting frame is fixedly disposed on the base frame and located on top of the material tray, the sorting connector is disposed on the sorting frame and corresponds to the sorting hole group, the sorting hole group is connected to an air blowing assembly, the air blowing assembly blows air into the sorting holes according to the detection result of the detection mechanism, and sorts the workpieces from the material tray into the sorting connector; the sorting tube is detachably connected to the sorting connector, and the sorting tube transports the workpieces from the sorting connector to the storage location; the sorting connector includes at least two sets, the number of turns of any set of sorting connectors corresponds to the number of turns of the material trough, and the number of stations of any set of sorting connectors corresponds to the number of stations of the detection mechanism.

2. The MLCC multi-track test conveying and sorting structure according to claim 1, characterized in that, The material trough is provided in at least 4 rings, with the same number of material troughs in any ring, and the material troughs in any ring are aligned from the inside to the outside.

3. The MLCC multi-track test, transport, and sorting structure according to claim 1, characterized in that, The detection mechanism includes an upper detection component and a lower detection component. The vacuum ring is provided with a detection area. The upper detection component and the lower detection component are located in the detection area. The upper detection component abuts against the material tray from the top, and the lower detection component abuts against the material tray from the bottom. Each detection station is provided with an upper detection component and a lower detection component.

4. The MLCC multi-track test, transport, and sorting structure according to claim 3, characterized in that, The upper detection component includes a test mounting base and several test insulating bases; the several test insulating bases are arranged in an array along the rotation direction of the material tray on the test mounting base; each of the test insulating bases has a test wheel seat at its bottom, and the bottom of the test wheel seat abuts against the top of the material tray; the number of test wheel seats corresponds to the number of revolutions in the material trough.

5. The MLCC multi-track test conveying and sorting structure according to claim 4, characterized in that, The lower detection assembly includes a lower test base, a plurality of lower test probe holders, a lower test probe, and a plurality of lower test electrodes; the lower test base is mounted on the vacuum mounting base, and the plurality of lower test electrodes are arranged in an array along the rotation direction of the material tray on the lower test base, with any one of the lower test electrodes mounted on the vacuum ring and abutting against the bottom of the material trough; the lower test probe holder corresponds to the lower test electrode, the lower test electrode is mounted on the lower test base, and the lower test probe connects the lower test electrode and the lower test probe holder.

6. The MLCC multi-track test conveying and sorting structure according to claim 1, characterized in that, The feeding mechanism includes a feeding bin, a feeding frame, and a screening rod. The feeding bin is located at the top of the feeding frame. Workpieces slide from the feeding bin to the feeding frame. The feeding frame is set on the base frame and has a number of feeding troughs corresponding to the number of material troughs. The screening rod is set on the feeding frame and abuts against the material tray. Along the direction of rotation of the material tray, the screening rod is located at the front end of the feeding trough and is used to sequentially screen several workpieces in the feeding trough to the material trough.

7. The MLCC multi-track test conveying and sorting structure according to claim 1, characterized in that, The drive system includes a drive motor, drive gears, transmission gears, a transmission belt, and a transmission shaft; the drive motor is mounted on the base frame via a mounting plate, the drive gears are coaxially connected to the output shaft of the drive motor, the drive gears and the transmission gears are connected via the transmission belt, the transmission shaft is coaxially connected to the transmission gears and connected to the material tray from the bottom of the material tray; the drive motor is electrically connected to the negative pressure system.

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