MOS tube detection device and method thereof

Abstract

The invention provides an MOS tube detection device and method, and relates to the technical field of detection equipment, the MOS tube detection device comprises a fixing frame, a conveying device, a guide contact detection assembly, a lifting assembly, an electric detection module, a first camera, a second camera, a material distribution device and a controller, and the MOS tube detection method is used at the same time. After the steps of material conveying, preliminary visual detection, power-on detection, visual marking and blanking and distributing, the surface-mounted MOS transistor can be rapidly and effectively detected, the detection efficiency of the surface-mounted MOS transistor is greatly improved, secondary carrying is not needed in the detection process, the detection time is saved, the surface-mounted MOS transistor is convenient and rapid to detect, and the detection efficiency of the surface-mounted MOS transistor is improved. Meanwhile, the miniaturization arrangement of the detection equipment is also facilitated; according to the MOS tube detection device and the method thereof, power-on detection can be quickly and effectively carried out on the surface-mounted MOS tube, so that the detection efficiency of the surface-mounted MOS tube is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a MOS tube detection device and method. Background Art

[0002] MOSFET is a transistor that carries current by the flow of holes and can be divided into two major categories: N-channel and P-channel. MOSFET has three pins, generally G, D, and S. When a control signal is applied between G and S, the conduction and cutoff between D and S can be changed. PMOS and NMOS are exactly the same in structure, except for the doping type of substrate and source and drain. NMOS is formed on a P-type silicon substrate by selective doping to form N-type doped regions as the source and drain regions of NMOS; PMOS is formed on an N-type silicon substrate by selective doping to form P-type doped regions as the source and drain regions of PMOS. The distance between the two source and drain doped regions is called the channel length L, and the effective source and drain region size perpendicular to the channel length is called the channel width W. For this simple structure, the source and drain of the device are completely symmetrical. Only in the application can the specific source and drain be finally confirmed based on the flow direction of the source and drain current. During the processing and inspection of MOS tubes, the performance of the conductive wires at the terminals needs to be tested, and a test auxiliary test bench is used during the testing process.

[0003] Currently, there are devices for testing MOS tubes. The detection mechanism and MOS tube detection device with patent number CN208537677U perform power-on detection on MOS tubes. A robotic arm is used to simultaneously clamp multiple MOS tubes and then move them to the power-on detection contact end for electrical conduction, so as to simultaneously perform power-on detection on multiple MOS tubes. However, the device has obvious disadvantages. The overall size is relatively large, which is not conducive to the reasonable placement and arrangement of the production line. In addition, it is difficult to stably obtain and move the chip-type MOS tube using the clamping or adsorption, moving, and contact conductive detection methods. During the pin contact power-on detection, the MOS tube often falls due to the collision between the pin and the contact end. Therefore, during the detection, an additional step of moving the MOS tube to a specific position and fixing it is required, which increases the working hours of the power-on detection and makes it difficult to quickly perform power-on detection on the chip-type MOS tube.

[0004] Therefore, it is necessary to propose a MOS tube detection device and method thereof to quickly and effectively perform power-on detection on the SMD MOS tube, so as to improve the detection efficiency of the SMD MOS tube. Summary of the Invention

[0005] In order to solve the above problems, the present invention proposes a MOS tube detection device and method thereof to quickly and effectively perform power-on detection on a surface-mount MOS tube, thereby improving the detection efficiency of the surface-mount MOS tube.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention proposes a MOS tube detection device, including a fixing frame, a conveying device, a guide contact detection component, a lifting component, an electrical inspection module, a first camera, a second camera, a material distribution device, and a controller. The conveying device, the lifting component, the electrical inspection module, the first camera, the second camera, and the material distribution device are all fixedly connected to the fixing frame. The guide contact detection component is fixedly connected to the top of the conveying device and is arranged along the conveying direction of the conveying device. The guide contact detection component is electrically connected to the electrical inspection module. The first camera is located on one side of the conveying device and extends above the guide contact detection component. The first camera is vertically facing The guide contact detection component and the lifting component are located on the other side of the conveying device, one end of the lifting component extends from the side to the inside of the conveying device and is located below the conveyor belt of the conveying device and is longitudinally aligned with the first camera. The material dividing device is located at the end of the conveying device and is connected to the conveying device. The shooting direction of the first camera is used as the dividing line. The shooting direction of the first camera to the end of the conveying device is the identification and judgment interval. The second camera is tilted toward the identification and judgment interval. The conveying device, the lifting component, the electrical inspection module, the first camera, the second camera, and the material dividing device are all electrically connected to the controller.

[0008] Furthermore, the guide contact detection assembly includes a guide member and a contact detection part. Both sides of the guide member are fixedly connected to the top of the conveying device. The bottom of the guide member extends toward the conveyor belt of the conveying device and is close to the upper surface of the conveyor belt. The guide member is provided with a feeding viewing groove, and the feeding viewing groove is connected to one end of the guide member, so that the guide member has a U-shaped structure. The feeding viewing groove is connected to the upper surface of the conveying device. The contact detection part is fixedly connected to the guide member and aligned with the first camera. The contact detection part is distributed on both sides of the feeding viewing groove. One end of the lifting assembly extends from the side to the interior of the conveying device and is located below the contact detection part. The contact detection part is electrically connected to the electrical inspection module.

[0009] Furthermore, the contact detection part includes at least one first conductive contact component and at least one second conductive contact component. At least one first conductive contact component is arranged in sequence and fixedly connected to one side of the feed viewing slot, and at least one second conductive contact component is arranged in sequence and fixedly connected to the other side of the feed viewing slot. At least one first conductive contact component and at least one second conductive contact component are electrically connected to the electrical inspection module respectively. Two side walls of the feed viewing slot are respectively provided with two pin limit plates, and the two pin limit plates are symmetrically arranged. One end of the first conductive contact component is embedded in the bottom of one pin limit plate, and one end of the second conductive contact component is embedded in the bottom of the other pin limit plate; the first conductive contact component and the second conductive contact component have the same structure.

[0010] Furthermore, the first conductive contact assembly includes a metal connector, a conductive contact plate, and a fixed shell. The metal connector is fixedly connected to the guide member, and the conductive contact plate is embedded in one end of the fixed shell. One end of the metal connector is respectively fixedly connected to one end of the conductive contact plate and one end of the fixed shell and is electrically connected to the conductive contact plate. The other end of the metal connector is electrically connected to the electrical inspection module. A contact step is provided at the other end of the fixed shell, and an elastic contact end is provided at the other end of the conductive contact plate. The elastic contact end extends into the contact step, and the contact step is embedded in the bottom of the pin limiting plate and is flush with the bottom of the pin limiting plate. One end of the elastic contact end protrudes downward from the contact step.

[0011] Furthermore, a pin flow groove is provided below the pin limiting plate, and one end of the elastic contact end extends into the pin flow groove.

[0012] Furthermore, the guide contact detection component also includes an auxiliary alignment portion, which is fixedly connected to the upper surface of the guide member and aligned with the first camera, and the auxiliary alignment portion is located between the contact detection portion and the first camera.

[0013] Furthermore, the auxiliary alignment part includes two first aligned plates, two second aligned plates, and two color difference plates. The two first aligned plates are fixedly connected to the upper surface of the guide and are located on one side of the feed viewing slot. One color difference plate is fixedly connected between the two first aligned plates. The two second aligned plates are fixedly connected to the upper surface of the guide and are located on the other side of the feed viewing slot. The other color difference plate is fixedly connected between the two second aligned plates. The two first aligned plates correspond one-to-one to the two second aligned plates and are aligned laterally, so that the extension lines of the two first aligned plates form a rectangular pattern in the image of the first camera after being extended to the two second aligned plates. The two color difference plates are symmetrically arranged along the feed viewing slot.

[0014] Furthermore, the two first-edge plates are each provided with a first bevel at one end facing the feed viewing trough, and the two first bevels are symmetrically arranged. The two second-edge plates are each provided with a second bevel at one end facing the feed viewing trough, and the two second bevels are symmetrically arranged. The extension line of the side line of one of the first bevels is collinear with the extension line of the side line of one of the second bevels at the opposite corner, and the extension line of the side line of the other first bevel is collinear with the extension line of the side line of the other second bevel at the opposite corner.

[0015] Furthermore, the lifting assembly includes a fixed plate, a cylinder, a lifting and pressing plate, and a sliding cylinder. The fixed plate is fixedly connected to one side of the fixed frame, the cylinder is fixedly connected to the bottom of the fixed plate, the push rod of the cylinder passes through the fixed plate and is fixedly connected to one side of the lifting and pressing plate, one side of the conveying device is provided with an insertion groove, one end of the lifting and pressing plate extends into the insertion groove and is located below the conveyor belt of the conveying device and aligned with the contact detection part, the sliding cylinder is longitudinally fixedly connected to the fixed plate, the other end of the lifting and pressing plate longitudinally passes through the sliding cylinder and is slidably connected to the sliding cylinder, and the cylinder is electrically connected to the controller.

[0016] A MOS transistor detection method, according to the above-mentioned MOS transistor detection device, comprises:

[0017] S1-Material conveying: an external manipulator places the MOS tubes one by one on the front end of the conveying device. The MOS tubes are moved by the conveying device under the guidance of the guide contact detection component;

[0018] S2 preliminary visual inspection: when the MOS tube moves to the center of the image of the first camera, the conveyor stops and the first camera performs preliminary visual inspection on the MOS tube;

[0019] S3: Power-on test: If the MOS tube passes the preliminary visual inspection, the lifting assembly will lift the conveyor belt of the conveyor device to a preset height, so that the MOS tube is lifted and the pins of the MOS tube form a contact-type electrical connection with the guide contact detection assembly, so that the electrical inspection module can perform power-on test on the MOS tube;

[0020] S4 visual marking: After the power-on test, a row of MOS tubes moves toward the end of the conveyor. After the MOS tubes enter the identification and judgment zone, the second camera marks the MOS tubes that pass the power-on test with a first color in the image, and marks the MOS tubes that fail the power-on test with a second color in the image;

[0021] In S5, a row of MOS tubes are moved out from the identification and judgment area one by one to the sorting device. The controller issues corresponding sorting instructions to the sorting device, and the sorting device transports the MOS tubes marked with the first color to the qualified channel and the MOS tubes marked with the second color to the waste channel.

[0022] Beneficial effects of the present invention:

[0023] 1. The present invention proposes a MOS tube inspection device for inspecting surface-mount MOS tubes. A conveying device is used to transport the MOS tubes toward a guide contact detection assembly. When the MOS tube is directly below a first camera, the first camera visually inspects the surface of the MOS tube. Simultaneously, a lifting assembly lifts the MOS tube via a conveyor belt of the conveying device, thereby establishing a contact-type electrical connection between the MOS tube and the guide contact detection assembly. This allows the electrical inspection module to perform a power-on inspection on the MOS tube. A second camera marks the MOS tubes after the power-on inspection. A sorting device, under a sorting instruction issued by a controller, sorts the MOS tubes into qualified and unqualified ones. The inspection process does not require further handling, thus saving inspection time, making the inspection of surface-mount MOS tubes convenient and quick, and also facilitating the miniaturization of the inspection equipment.

[0024] 2. This invention proposes a MOS tube inspection method. After completing the steps of material conveying, preliminary visual inspection, power-on inspection, visual marking, and material sorting, surface-mount MOS tubes can be inspected quickly and effectively, greatly improving the inspection efficiency of surface-mount MOS tubes.

[0025] In summary, the MOS tube detection device and method can quickly and effectively perform power-on detection on the SMD MOS tube, thereby improving the detection efficiency of the SMD MOS tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall MOS tube detection device of the present invention;

[0027] Figure 2 for Figure 1 A partial enlarged schematic diagram of the label A;

[0028] Figure 3 for Figure 1 A partial enlarged schematic diagram of label B;

[0029] Figure 4 This is a schematic diagram of the MOS tube detection device of the present invention from another angle;

[0030] Figure 5 This is a partial cross-sectional view of the MOS tube detection device of the present invention, with the pins of the MOS tube as the longitudinal section;

[0031] Figure 6 A top view of the MOS tube detection device of the present invention;

[0032] Figure 7 This is a cross-sectional view of the MOS tube detection device of the present invention, with the pins of the MOS tube as the transverse section;

[0033] Figure 8 for Figure 7 A partial enlarged schematic diagram of label C;

[0034] Figure 9 This is a left side view of the MOS tube detection device of the present invention;

[0035] Figure 10 This is a schematic diagram of a guide contact detection component of a MOS tube detection device of the present invention;

[0036] Figure 11 A schematic diagram of the guide contact detection component of the MOS tube detection device of the present invention from another angle;

[0037] Figure 12 This is a schematic diagram of an image acquired by the first camera and virtually composed by the first visual recognition module of the MOS tube detection device of the present invention;

[0038] Figure 13 This is an exploded view of the first conductive contact component of the MOS tube detection device of the present invention;

[0039] Figure 14 This is a schematic diagram of the electrical connection of the MOS tube detection device of the present invention;

[0040] Figure 15 This is a flow chart of the MOS tube detection method of the present invention.

[0041] The reference numerals are as follows:

[0042] Fixed frame 1;

[0043] Conveying device 2, conveyor belt 21, extending into slot 22, motor 23, outer frame 24;

[0044] Guide contact detection assembly 3, guide member 31, feed viewing slot 311, pin limiting plate 3111, first mounting slot 3112, second mounting slot 3113, pin flow slot 3114, contact detection portion 32, first conductive contact assembly 321, metal connector 3211, connecting end 32111, conductive contact plate 3212, elastic contact end 32121, fixing shell 3213, contact step 32131, second conductive contact assembly 322, auxiliary alignment portion 33, first trim plate 331, first bevel 3311, second trim plate 332, second bevel 3321, color difference plate 333;

[0045] Lifting assembly 4, fixing plate 41, cylinder 42, lifting pressing plate 43, pressing boss 431, sliding rod 432, sliding cylinder 44:

[0046] Electrical inspection module 5;

[0047] First camera 6, first visual recognition module 95;

[0048] Second camera 7, second visual recognition module 96;

[0049] Material dividing device 8;

[0050] Controller 9, data processing module 91, first driving module 92, second driving module 93, third driving module 94, storage module 97;

[0051] Identification and judgment area 602 , MOS tube 101 , rectangular box 102 , identification area box 103 , qualified channel 104 , unqualified channel 105 . DETAILED DESCRIPTION

[0052] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0053] Please refer to Figures 1-14The present invention proposes a MOS tube detection device, including a fixing frame 1, a conveying device 2, a guide contact detection component 3, a lifting component 4, an electric inspection module 5, a first camera 6, a second camera 7, a material distribution device 8, and a controller 9. The conveying device 2, the lifting component 4, the electric inspection module 5, the first camera 6, the second camera 7, and the material distribution device 8 are all fixedly connected to the fixing frame 1. The guide contact detection component 3 is fixedly connected to the top of the conveying device 2 and is arranged along the conveying direction of the conveying device 2. The guide contact detection component 3 is fixedly connected to the outer frame 24 of the conveying device 2. The guide contact detection component 3 is electrically connected to the electric inspection module 5. The first camera 6 is located on one side of the conveying device 2 and extends above the guide contact detection component 3. The first camera 6 is vertically connected to the outer frame 24 of the conveying device 2. The guide contact detection component 3 is directed straightly, and the lifting component 4 is located on the other side of the conveying device 2. One end of the lifting component 4 extends from the side to the inside of the conveying device 2 and is located below the conveyor belt 21 of the conveying device 2 and is longitudinally aligned with the first camera 6. The conveyor belt 21 is driven by the motor 23 through the synchronous wheel and the synchronous belt. The motor 23 is fixedly connected to the bottom of the outer frame 24. The material dividing device 8 is located at the end of the conveying device 2 and is connected to the conveying device 2. The shooting direction of the first camera 6 is used as the dividing line. The shooting direction of the first camera 6 to the end of the conveying device 2 is the identification and judgment interval 602. The second camera 7 is tilted toward the identification and judgment interval 602. The conveying device 2, the lifting component 4, the electric inspection module 5, the first camera 6, the second camera 7, the material dividing device The controller 8 is electrically connected to the controller 9, and the controller 9 is provided with a data processing module 91, a first driving module 92, a second driving module 93, a third driving module 94, and a storage module 97. The first camera 6 is provided with a first visual recognition module 95, and the second camera 7 is provided with a second visual recognition module 96. The data processing module 91 is electrically connected to the first driving module 92, the second driving module 93, the third driving module 94, the first visual recognition module 95, the second visual recognition module 96, and the storage module 97 respectively. The data processing module 91 is used to issue corresponding operation instructions to the first driving module 92, the second driving module 93, and the third driving module 94, so that the first driving module 92, the second driving module 93, and the third driving module 94 are respectively Corresponding operating instructions are issued to the conveying device 2, the lifting component 4, and the material distribution device 8. At the same time, the data processing module 91 receives the detection signal sent back from the electric inspection module 5 and the image signal sent back by the first visual recognition module 95 and the second visual recognition module 96 to determine whether the detected MOS tube is qualified or unqualified. The data processing module 91 can also call the image information in the storage module 97. The first driving module 92 is electrically connected to the conveying device 2. The first driving module 92 is used to issue corresponding operating instructions to the conveying device 2 so that the conveying device 2 can operate. The second driving module 93 is electrically connected to the lifting component 4. The second driving module 93 is used to issue corresponding operating instructions to the lifting component 4 so that the lifting component 4 can operate.The third driving module 94 is electrically connected to the dispensing device 8 and is used to issue corresponding operating instructions to the dispensing device 8, so that the dispensing device 8 operates. The first visual recognition module 95 is electrically connected to the first camera 6 and is used to obtain image signals from the first camera 6 and transmit them back to the data processing module 91. The second visual recognition module 96 is electrically connected to the second camera 7 and is used to obtain image signals from the second camera 7 and transmit them back to the data processing module 91. The storage module 97 is used to store the image information returned by the first and second visual recognition modules 95 and 96 within a preset time, so that the data processing module 91 can call the image information in the storage module 97 within a preset time.

[0054] In this embodiment, when inspecting the patch-type MOS tube 101, the MOS tube 101 is moved to the feeding end of the conveying device 2 by an external manipulator, and the conveying device 2 conveys the MOS tube so as to convey the MOS tube 101 toward the direction of the guide contact detection component 3. At this time, the MOS tube 101 moves in the guide contact detection component 3, and the first camera 6 can capture the movement process of the MOS tube 101. When the MOS tube 101 is directly below the first camera 6, the conveying device 2 is suspended. At this time, the MOS tube stays directly below the first camera 6. The first camera 6 performs visual inspection on the surface of the MOS tube. After the MOS tube passes the visual inspection, it is lifted. The component 4 lifts the MOS tube across the conveyor belt 21 of the conveyor device 2, so that the MOS tube is electrically connected to the guide contact detection component 3. At this time, the pins of the MOS tube, the contact detection component 3, and the electrical inspection module 5 constitute a power-on detection circuit, so that the electrical inspection module 5 can perform power-on detection on the MOS tube. After the MOS tube completes the power-on detection, the conveyor device 2 is started, and the MOS tube continues to move toward the rear of the conveyor device 2, that is, moves toward the direction of the identification and judgment interval 602. When the conveyor device 2 is started, the second camera 7 distinguishes and marks the MOS tubes after the power-on detection, that is, the MOS tubes that are qualified or unqualified in the power-on detection are distinguished and marked. In the image, all MOS tubes within the identification and judgment interval 602 will be marked and distinguished by corresponding color marks, that is, a row of MOS tubes with color marks is formed, which is convenient for the sampling personnel to watch on the external synchronous display screen. The sorting device 8, under the sorting instruction issued by the controller 9, sorts the MOS tubes that are qualified and unqualified during the power-on test. The sorting device 8 is a small conveyor belt. When the qualified MOS tube falls on the sorting device 8, the sorting device 8 rotates forward, so that the MOS tube is moved and falls into the qualified channel 104 on the left. When the unqualified MOS tube falls on the sorting device 8, the sorting device 8 reverses, so that the MOS tube is moved and falls into the unqualified channel 105 on the right. In order to quickly sort the MOS tubes; if the visual inspection fails during the visual inspection of the surface of the MOS tube by the first camera 6, for example, the surface of the MOS tube is damaged or there is no model information, the lifting component 4 will not be lifted, and the power-on inspection will not be performed. During the process of the conveying device 2 transporting it backward, the second camera 7 will also mark the MOS tube as unqualified. When the MOS tube falls on the sorting device 8, the sorting device 8 is reversed, so that the MOS tube is moved and falls into the unqualified channel on the right. The entire process of detecting the chip-type MOS tube does not require further transportation, which saves detection time, makes the detection of the chip-type MOS tube convenient and fast, and also facilitates the miniaturization of the detection equipment.

[0055] In this embodiment, the guide contact detection assembly 3 includes a guide member 31 and a contact detection portion 32. The guide member 31 is an insulating plastic member. Both sides of the guide member 31 are fixedly connected to the top of the conveying device 2. The guide member 31 can be replaced. The bottom of the guide member 31 extends toward the conveyor belt 21 of the conveying device 2 and is close to the upper surface of the conveyor belt 21, that is, the bottom of the guide member 31 is very close to the conveyor belt 21, maintaining a distance of 0.2 to 0.4 mm. The guide member 31 is provided with a feeding viewing groove 311, and the feeding viewing groove 311 is connected to one end of the guide member 31, so that the guide member 31 is U-shaped. The feeding viewing groove 311 is connected to the upper surface of the conveying device 2, and the feeding viewing groove 311 is connected to the upper surface of the conveying device 2. The groove 311 can be designed according to the horizontal width of the pins of the patch-type MOS tube 101. When the MOS tube 101 is moved by the conveying device 2, the pins on both sides of the MOS tube 101 will respectively contact the two side surfaces of the feeding viewing groove 311 and slide. That is, when different types of MOS tubes are to be tested, the guide members 31 corresponding to the feeding viewing grooves 311 of different widths can be replaced and installed on the conveying device 2. The contact detection part 32 is fixedly connected to the guide member 31 and aligned with the first camera 6. The contact detection part 32 is distributed on both sides of the feeding viewing groove 311. One end of the lifting component 4 extends from the side to the interior of the conveying device 2 and is located below the contact detection part 32. The contact detection part 32 is electrically connected to the electric inspection module 5; when the MOS tube 101 is moved to the bottom of the contact detection part 32, the conveying device 2 is paused, and then one end of the lifting component 4 is lifted to lift the MOS tube across the conveyor belt 21. The height of the MOS tube is lifted by 1.0 to 1.5 mm, so that all pins of the MOS tube are in contact with the contact detection part 32 to form an electrical connection. At this time, the MOS tube, the contact detection part 32, and the electric inspection module 5 form a power-on detection circuit to perform power-on detection. The electric inspection module 5 will return the detection signal to the controller 9, and the controller 9 will send the corresponding marking instruction to the second visual recognition module 96 according to the detection result. The second visual recognition module 96 is connected to the second visual recognition module 96. The visual recognition module 96 marks the MOS tube through the image sent back by the second camera 7. For example, if the MOS tube is detected as qualified during the power-on test, the outer contour of the MOS tube in the image sent back by the second camera 7 will be marked with a green outline. If the MOS tube is detected as unqualified during the power-on test, the outer contour of the MOS tube in the image sent back by the second camera 7 will be marked with a red outline. After the power-on test is completed, one end of the lifting component 4 is lowered, the conveyor belt 21 is restored to be flat, all pins of the MOS tube are out of contact with the contact detection part 32, and then the conveying device 2 is started to continue to transport the MOS tube that has completed the power-on test to the rear.

[0056] In this embodiment, the contact detection part 32 includes at least one first conductive contact component 321 and at least one second conductive contact component 322. The at least one first conductive contact component 321 is sequentially arranged and fixedly connected to one side of the feed viewing slot 311, and the at least one second conductive contact component 322 is sequentially arranged and fixedly connected to the other side of the feed viewing slot 311. The at least one first conductive contact component 321 and the at least one second conductive contact component 322 are respectively electrically connected to the electric inspection module 5. Two side walls of the feed viewing slot 311 are respectively provided with two pin limiting plates 3111. The two pin limiting plates 3111 are symmetrically arranged. The two pin limiting plates 3111 are used to limit the positions of the pins on both sides of the MOS tube 101, so that when the MOS tube moves under the drive of the conveying device 2, the pins of the MOS tube will not separate from the conveyor belt 21, so that the MOS tube maintains a horizontal state when moving. One end of the first conductive contact component 321 is embedded in the bottom of one pin limiting plate 3111, and one end of the second conductive contact component 322 is embedded in the bottom of the other pin limiting plate 3111. The first conductive contact component The structure of the component 321 is the same as that of the second conductive contact component 322; when the MOS tube moves, the pin limiting plate 3111 limits the position of the pin of the MOS tube. When the MOS tube moves to the bottom of the contact detection portion 32, the pin on one side of the MOS tube will be located below the first conductive contact component 321, and the pin on the other side of the MOS tube will be located below the second conductive contact component 322. When one end of the lifting component 4 is lifted, the pin on one side of the MOS tube will contact the first conductive contact component 321 to form an electrical connection, and the pin on the other side of the MOS tube will contact the first conductive contact component 321 to form an electrical connection. The pins will contact the second conductive contact component 322 to form an electrical connection. At this time, the MOS tube, the first conductive contact component 321, the second conductive contact component 322, and the electrical detection module 5 constitute a power-on detection circuit. The number of the first conductive contact component 321 and the second conductive contact component 322 depends on the number and distribution position of the MOS tube pins. For example, the MOS tube has three pins, two on one side and one on the other side. At this time, the number of the first conductive contact component 321 is one, and the number of the second conductive contact component 322 is two.

[0057] In this embodiment, the guide member 31 is provided with a first mounting groove 3112 having the same number as the first conductive contact components 321 and a second mounting groove 3113 having the same number as the second conductive contact components 322. The first mounting groove 3112 is located on one side of the feed viewing groove 3111, and one end of the first mounting groove 3112 extends to the bottom of a pin limiting plate 3111. The first conductive contact component 321 is accommodated in the first mounting groove 3112, and the second mounting groove 3113 is located on the other side of the feed viewing groove 311, and one end of the second mounting groove 3113 extends to the bottom of another pin limiting plate 3111. The electrical contact component 322 is accommodated in the second mounting groove 3113; the first mounting groove 3112 and the second mounting groove 3113 have the same structure. In order to ensure that the bottom of the first conductive contact component 321 or the second conductive contact component 322 can be located at the bottom of the pin limiting plate 3111 after installation, so as to facilitate contact with the surface of the pin of the MOS tube, the first mounting groove 3112 or the second mounting groove 3113 is designed so that one end thereof needs to extend to the bottom of the pin limiting plate 3111, so that the first conductive contact component 321 or the second conductive contact component 322 will not hinder the movement of the MOS tube 101 after installation.

[0058] In this embodiment, the first conductive contact component 321 includes a metal connector 3211, a conductive contact plate 3212, and a fixed shell 3213. The metal connector 3211, the conductive contact plate 3212, and the fixed shell 3213 are all made of metal materials. The metal connector 3211 is fixedly connected to the guide member 31, and the conductive contact plate 3212 is embedded in one end of the fixed shell 3213. One end of the metal connector 3211 is fixedly connected to one end of the conductive contact plate 3212 and one end of the fixed shell 3213 and is electrically connected to the conductive contact plate 3212. The other end of the metal connector 3211 is provided with a connecting end 32111. The metal connector 3211 is electrically connected to the electrical inspection module 5 by welding a conductive wire to the connecting end 32111. The other end of the fixed shell 3213 is provided with a contact step 32131, and the other end of the conductive contact plate 3212 is provided with an elastic contact end 32121. The elastic contact end 32121 extends into the contact step 32131, and the contact step 32131 is embedded in the bottom of the pin limiting plate 3111 and is flush with the bottom of the pin limiting plate 3111. One end of the elastic contact end 32121 protrudes downward from the contact step 32131. Since the first mounting groove 3112 is a Z-shaped structure, in order to facilitate the installation of the first conductive contact component 321 and at the same time make the pin of the MOS tube have elastic force when contacting the first conductive contact component 321, the first conductive contact component 321 is divided into a metal connector 3211 and a conductive contact. The first conductive contact assembly 321 is composed of three parts: the plate 3212 and the fixed shell 3213. When installing the first conductive contact assembly 321, first insert the metal connector 3211 into the first mounting groove 3112 from one end of the first mounting groove 3112, then embed the conductive contact plate 3212 into the fixed shell 3213, and insert the conductive contact plate 3212 into the first mounting groove 3112 from the other end of the first mounting groove 3112 with the conductive contact plate 3212 as the contact surface with the metal connector 3211, so that the conductive contact plate 3212 contacts the metal connector 3211, and then screw through the fixed shell 3213 and the conductive contact plate 3212 in sequence and then lock it into the metal connector 3211. After the screws are tightened, the first conductive contact assembly 321 is firmly fixed to the first mounting groove 3113. It is installed in the groove 3112, and since the contact step 32131 is flush with the bottom of the pin limiting plate 3111, it will not hinder the normal movement of the MOS tube along the groove wall of the feeding viewing groove 311, and the elastic contact end 32121 is elastic, and one end of the elastic contact end 32121 protrudes downward from the contact step 32131. When the MOS tube is lifted, the pin of the MOS tube will abut against the elastic contact end 32121, thereby ensuring a stable contact electrical connection between the MOS tube and the first conductive contact component 321; and the operation of installing the second conductive contact component 322 in the second installation groove 3113 is the same as the operation of installing the first conductive contact component 321 in the first installation groove 3112, and will not be repeated.

[0059] In this embodiment, a pin flow groove 3114 is provided below the pin limiting plate 3111, and one end of the elastic contact end 32121 extends into the pin flow groove 3114; when the MOS tube moves, the pin of the MOS tube will move in the pin flow groove 3114. During the movement, the pin of the MOS tube will not contact the first conductive contact component 321 or the second conductive contact component 322.

[0060] In this embodiment, the guide contact detection assembly 3 further includes an auxiliary alignment portion 33, which is fixedly connected to the upper surface of the guide member 31 and aligned with the first camera 6. The auxiliary alignment portion 33 is located between the contact detection portion 32 and the first camera 6. Since the installation position of the first camera 6 may deviate, it is difficult to ensure that it is completely installed in a central position directly above the contact detection portion 32, that is, it is difficult to ensure that the contact detection portion 32 is located in the center of the image obtained by the first camera 6. Therefore, the auxiliary alignment portion 33 is provided to align the virtual composition of the image. The function of the auxiliary alignment portion 33 is to assist the first camera 6 in acquiring the image located below. The second visual recognition module 96 then performs a virtual composition on the image, so that the auxiliary alignment portion 33 in the image is a rectangular frame 102 with a colored border. The area of the rectangular frame 102 is larger than the upper surface area of the MOS transistor 101. When the MOS transistor 101 moves to the center of the rectangular frame 102, the conveying device 2 is paused, at which time the above-mentioned power-on test can be performed on the MOS transistor 101.

[0061] In this embodiment, the auxiliary alignment portion 33 includes two first aligning plates 331, two second aligning plates 332, and two color difference plates 333. The two first aligning plates 331 are fixedly connected to the upper surface of the guide member 31 and are located on one side of the feed viewing slot 311. One color difference plate 333 is fixedly connected between the two first aligning plates 331. The two second aligning plates 332 are fixedly connected to the upper surface of the guide member 31 and are located on the other side of the feed viewing slot 311. Another color difference plate 333 is fixedly connected between the two second aligning plates 332. The two first aligning plates 331 correspond to the two second aligning plates 332 one by one and are aligned laterally, so that the extension line of the two first aligning plates 331 is extended to the two second aligning plates 332 in the image of the first camera 6. A rectangular pattern is formed in the image, and two color difference plates 333 are symmetrically arranged along the feed viewing slot 311; when the first visual recognition module 95 virtually composes the image, due to the color difference of light, the edge connection lines of the two first edge plates 331 and the two second edge plates 332 will form a rectangular frame 102, and the colors of the two color difference plates 333 are different from the color of the MOS tube surface, preferably with a large difference. For example, the MOS tube surface is black, that is, dark, and the color difference plates 333 need to be light, that is, white, light red, light blue, and light green. When the MOS tube moves to the area within the rectangular frame 102, due to the large color difference, the first camera 6 can quickly and clearly capture the top view outline of the MOS tube 101 to facilitate subsequent recognition and alignment.

[0062] In this embodiment, the two first side plates 331 are each provided with a first bevel 3311 at one end facing the feed viewing slot 311, and the two first bevels 3311 are symmetrically arranged, and the two second side plates 332 are each provided with a second bevel 3321 at one end facing the feed viewing slot 311, and the two second bevels 3321 are symmetrically arranged, and the extension line of the side line of one first bevel 3311 is collinear with the extension line of the side line of one second bevel 3321 at the opposite corner, and the extension line of the side line of the other first bevel 3311 is collinear with the extension line of the side line of the other second bevel 3321 at the opposite corner; in order to ensure that the MOS tube 101 can accurately move in the rectangular area when moving The first oblique angle 3311 and the second oblique angle 3321 are set to assist the first visual recognition module 95 in virtually composing the image. During the virtual composition, the two color difference plates 333 are separated by the feeding viewing slot 311. At this time, the feeding viewing slot 311 in the rectangular frame 102 also serves as another smaller and centered rectangular frame, namely, the recognition area frame 103. The endpoints of the two first oblique angles 3311 are on the two corners of the recognition area frame 103, and the endpoints of the two second oblique angles 3321 are on the other two corners of the recognition area frame 103. At this time, the first visual recognition module 95 can use the edge of a first oblique angle 3311 on the image as the starting point of the virtual composition, and connect it to the edge of a second oblique angle 3321 at the diagonal position to form a diagonal line. At the same time, the edge of another first oblique angle 3311 is used as the starting point of the virtual composition, and is connected to the edge of another second oblique angle 3321 at the diagonal position to form another diagonal line. This makes the recognition area frame 103 have two intersecting diagonals. The two intersecting diagonals determine the first midpoint of the alignment. When the MOS tube 101 enters the range of the recognition area frame 103, the top view of the MOS tube 101 is a rectangular structure. The first visual recognition module 95 diagonally frames the top view of the MOS transistor 101 so that the MOS transistor 101 also has a second midpoint. The diameter of the circular mark at the first midpoint is slightly larger than the diameter of the circular mark at the second midpoint. At this time, the second midpoint and the first midpoint are basically in a collinear state. Since the speed of the conveying device 2 is known, that is, the speed of the MOS transistor is known, the distance between the first midpoint and the second midpoint can be obtained from the image, that is, the displacement time from the second midpoint to the first midpoint can be calculated. After the conveying device 2 runs for the displacement time, it pauses and the second midpoint reaches the first midpoint. At this time, the MOS transistor is located in the center of the recognition area frame 103.

[0063] In this embodiment, the lifting assembly 4 includes a fixed plate 41, a cylinder 42, a lifting and pressing plate 43, and a sliding cylinder 44. The fixed plate 41 is fixedly connected to one side of the fixed frame 1, and the cylinder 42 is fixedly connected to the bottom of the fixed plate 41. The air supply end of the cylinder 42 forms an air pressure connection with the external air supply device. The push rod of the cylinder 42 passes through the fixed plate 41 and is fixedly connected to one side of the lifting and pressing plate 43. One side of the conveying device 2 is provided with an insertion groove 22. One end of the lifting and pressing plate 43 extends into the insertion groove 22 and is located below the conveyor belt 21 of the conveying device 2 and is aligned with the contact detection part 32. The sliding cylinder 44 is longitudinally fixedly connected to the fixed plate 41. The other end of the lifting and pressing plate 43 longitudinally passes through the sliding cylinder 44 and is slidably connected to the sliding cylinder 44. The cylinder 42 is electrically connected to the controller 9. After the MOS tube is aligned with the contact detection part 32, the cylinder 42 drives the lifting and pressing plate 4 3 is moved upward, and a pressing boss 431 is provided at one end of the lifting and pressing plate 43. The area of the pressing boss 431 is larger than the area of the MOS tube so as to cover all the pins of the MOS tube during the pressing process. The pressing boss 431 can be replaced to adapt to different types of MOS tubes for lifting. A sliding rod 432 is provided at the other end of the lifting and pressing plate 43. The sliding rod 432 passes through the sliding cylinder 44 and is slidably connected to the sliding cylinder 44. The cylinder 42 is located between the pressing boss 431 and the sliding cylinder 44. In order to ensure that the pressing boss 431 presses the conveyor belt 21 in parallel during the lifting process, the sliding rod 432 is provided to form a sliding connection with the sliding cylinder 44 to balance the force, avoid tilting of the lifting and pressing plate 43 during the lifting process, and prevent insufficient pressing of the pins of the MOS tube by the pressing boss 431, resulting in insufficient power-on detection.

[0064] Please refer to Figure 14-15 A MOS transistor detection method, based on the above-mentioned MOS transistor detection device, includes:

[0065] S1 - Material conveying: An external manipulator places the MOS tubes one by one on the front end of the conveying device 2. The MOS tubes are moved by the conveying device 2 under the guidance of the guide contact detection component 3;

[0066] S2: preliminary visual inspection. When the MOS tube moves to the center of the image of the first camera 6, the conveying device 2 stops and the first camera 6 performs preliminary visual inspection on the MOS tube.

[0067] S3: Power-on test: If the MOS tube passes the preliminary visual inspection, the lifting assembly 4 lifts the conveyor belt 21 of the conveying device 2 upward to a preset height, so that the MOS tube is lifted and the pins of the MOS tube are in contact with the guide contact detection assembly 3 to form a contact-type electrical connection, so that the electrical inspection module 5 can perform power-on test on the MOS tube;

[0068] S4 visual marking: After the power-on test, a row of MOS transistors moves toward the end of the conveyor 2. After the MOS transistors enter the identification and judgment interval, the second camera 7 marks the MOS transistors that have passed the power-on test with a first color in the image, and marks the MOS transistors that have failed the power-on test with a second color in the image;

[0069] S5 is the material separation. A row of MOS tubes are moved out from the identification and judgment area one by one to the material separation device 8. The controller 9 issues corresponding material separation instructions to the material separation device 8. The material separation device 8 transports the MOS tubes marked with the first color mark to the qualified channel and transports the MOS tubes marked with the second color mark to the waste channel.

[0070] In this embodiment, when inspecting the MOS tube, the external manipulator places the MOS tubes one by one on the front end of the conveying device 2. The MOS tubes are driven by the conveying device 2 to move under the guidance of the guide contact detection component 3. That is, at this time, the MOS tubes are still in a moving state and are moving toward the end of the conveying device 2. The first camera 6 is turned on, and under the action of the auxiliary alignment part 33, the first visual recognition module 95 forms a rectangular frame 102, an identification area frame 103 and a first midpoint in the image. After the MOS tube moves into the area of the rectangular frame 102, the first visual recognition module 95 performs a diagonal composition on the top view of the MOS tube 101 to form a second midpoint. When the MOS tube moves to the image of the first camera 6, the first visual recognition module 95 forms a rectangular frame 102, an identification area frame 103 and a first midpoint. When the second midpoint reaches the first midpoint, the conveying device 2 stops, and the first camera 6 performs a preliminary visual inspection on the MOS tube to detect whether there are defects in the appearance of the MOS tube; if the preliminary visual inspection of the MOS tube is qualified, the controller 9 issues a lifting instruction to the lifting component 4, and the lifting component 4 lifts the conveyor belt 21 of the conveying device 2 upward to a preset height, so that the MOS tube is lifted and the pins of the MOS tube form a contact electrical connection with the guide contact detection component 3, so that the electrical inspection module 5 performs power-on detection on the MOS tube; after the power-on detection, a row of MOS tubes moves toward the end of the conveying device 2, that is, enters the identification and judgment interval 602 to move. After the MOS tube enters the identification and judgment interval 602, the first camera 6 performs a preliminary visual inspection on the MOS tube to detect whether there are defects in the appearance of the MOS tube; if the preliminary visual inspection of the MOS tube is qualified, the controller 9 issues a lifting instruction to the lifting component 4, and the lifting component 4 lifts the conveyor belt 21 of the conveying device 2 upward to a preset height, so that the MOS tube is lifted and the pins of the MOS tube form a contact electrical connection with the guide contact detection component 3, so that the electrical inspection module 5 performs power-on detection on the MOS tube; after the power-on detection, a row of MOS tubes moves toward the end of the conveying device 2, that is, enters the identification and judgment interval 602 to move. The second visual recognition module 96 uses the image obtained by the second camera 7 to mark the MOS tubes that have passed the power-on test with a first color in the image, and marks the MOS tubes that have failed the power-on test with a second color in the image. For example, the overall outline of the qualified MOS tube is marked with a green outline, and the overall outline of the unqualified MOS tube is marked with a red outline; a row of MOS tubes is moved out one by one from the recognition and judgment interval 602 to the material distribution device 8 under the drive of the conveying device 2. The image of this process is captured by the second camera 7, and then the second visual recognition module 96 transmits the image information back to the data processing module 91 of the controller 9. After the data processing module 91 judges the image information, the third driving module 94 of the controller 9 issues the corresponding material distribution. The instruction is sent to the sorting device 8, and the sorting device 8 transports the MOS tube marked with the first color mark to the qualified channel, and transports the MOS tube marked with the second color mark to the waste channel. For example, if the MOS tube falling into the sorting device 8 is outlined in green in the image, the third driving module 94 issues a forward transmission instruction to the sorting device 8, and the sorting device 8 rotates forward, so that the MOS tube with the green outline is moved and falls into the qualified channel on the left. If the next MOS tube falling into the sorting device 8 is outlined in red in the image, the third driving module 94 issues a reverse transmission instruction to the sorting device 8, and the sorting device 8 reverses, so that the MOS tube with the red outline is moved and falls into the unqualified channel on the right, so as to quickly sort the MOS tubes.If the MOS transistor fails the initial visual inspection, the controller 9 does not issue any instructions to the lifting assembly 4, the lifting assembly 4 remains inactive, and the conveyor device 2 is activated. Simultaneously, the unqualified MOS transistor is directly marked with a second color mark. For example, if the surface of the MOS transistor is damaged, after the MOS transistor is centered within the identification area frame 103, the first camera 6 captures a top view of the MOS transistor, and the first visual recognition module 95 transmits this image back to the data processing module 91 in the controller 9 for determination. If damage is found in the outline of the MOS transistor's top view, the data processing module 91 directly issues a start instruction to the first driver module 92. The first driver module 92 then issues a run instruction to the conveyor device 2, causing the conveyor device 2 to continue to start, driving the MOS transistor to continue to move backward. At this point, the MOS transistor is unqualified and is marked with a second color mark, for example, a red outline.

[0071] In summary, the MOS tube detection device and method can quickly and effectively perform power-on detection on the SMD MOS tube, thereby improving the detection efficiency of the SMD MOS tube.

[0072] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A MOS tube detection device, characterized in that: It includes a fixed frame, a conveying device, a guide contact detection component, a lifting component, an electric inspection module, a first camera, a second camera, a material distribution device, and a controller. The conveying device, the lifting component, the electric inspection module, the first camera, the second camera, and the material distribution device are all fixedly connected to the fixed frame. The guide contact detection component is fixedly connected to the top of the conveying device and is arranged along the conveying direction of the conveying device. The guide contact detection component is electrically connected to the electric inspection module. The first camera is located on one side of the conveying device and extends to the top of the guide contact detection component. The first camera is vertically facing the guide contact detection component. The lifting component is located on the other side of the conveying device, one end of the lifting component extends from the side to the inside of the conveying device and is located below the conveyor belt of the conveying device and is longitudinally aligned with the first camera. The material dividing device is located at the end of the conveying device and is connected to the conveying device. The shooting direction of the first camera is used as the dividing line. The shooting direction of the first camera to the end of the conveying device is the identification and judgment interval. The second camera is tilted toward the identification and judgment interval. The conveying device, the lifting component, the electrical inspection module, the first camera, the second camera, and the material dividing device are all electrically connected to the controller.

2. The MOS tube detection device according to claim 1, characterized in that: The guide contact detection assembly includes a guide member and a contact detection part. Both sides of the guide member are fixedly connected to the top of the conveying device. The bottom of the guide member extends toward the conveyor belt of the conveying device and is close to the upper surface of the conveyor belt. The guide member is provided with a feeding viewing groove. The feeding viewing groove is connected to one end of the guide member, so that the guide member has a U-shaped structure. The feeding viewing groove is connected to the upper surface of the conveying device. The contact detection part is fixedly connected to the guide member and aligned with the first camera. The contact detection part is distributed on both sides of the feeding viewing groove. One end of the lifting assembly extends from the side to the interior of the conveying device and is located below the contact detection part. The contact detection part is electrically connected to the electrical inspection module.

3. The MOS tube detection device according to claim 2, characterized in that: The contact detection part includes at least one first conductive contact component and at least one second conductive contact component. At least one first conductive contact component is arranged in sequence and fixedly connected to one side of the feed viewing slot, and at least one second conductive contact component is arranged in sequence and fixedly connected to the other side of the feed viewing slot. At least one first conductive contact component and at least one second conductive contact component are electrically connected to the electrical inspection module respectively. Two side walls of the feed viewing slot are respectively provided with two pin limit plates, and the two pin limit plates are symmetrically arranged. One end of the first conductive contact component is embedded in the bottom of one pin limit plate, and one end of the second conductive contact component is embedded in the bottom of the other pin limit plate; the first conductive contact component and the second conductive contact component have the same structure.

4. The MOS tube detection device according to claim 3, characterized in that: The first conductive contact assembly includes a metal connector, a conductive contact plate, and a fixed shell. The metal connector is fixedly connected to the guide member, and the conductive contact plate is embedded in one end of the fixed shell. One end of the metal connector is respectively fixedly connected to one end of the conductive contact plate and one end of the fixed shell and is electrically connected to the conductive contact plate. The other end of the metal connector is electrically connected to the electrical inspection module. A contact step is provided at the other end of the fixed shell, and an elastic contact end is provided at the other end of the conductive contact plate. The elastic contact end extends into the contact step, and the contact step is embedded in the bottom of the pin limiting plate and is flush with the bottom of the pin limiting plate. One end of the elastic contact end protrudes downward from the contact step.

5. The MOS tube detection device according to claim 4, characterized in that: A pin flow groove is provided below the pin limiting plate, and one end of the elastic contact end extends into the pin flow groove.

6. The MOS tube detection device according to claim 2, characterized in that: The guide contact detection component further includes an auxiliary alignment portion, which is fixedly connected to the upper surface of the guide member and aligned with the first camera, and the auxiliary alignment portion is located between the contact detection portion and the first camera.

7. The MOS tube detection device according to claim 6, characterized in that: The auxiliary alignment part includes two first aligned plates, two second aligned plates, and two color difference plates. The two first aligned plates are fixedly connected to the upper surface of the guide and are located on one side of the feed viewing slot. One color difference plate is fixedly connected between the two first aligned plates. The two second aligned plates are fixedly connected to the upper surface of the guide and are located on the other side of the feed viewing slot. The other color difference plate is fixedly connected between the two second aligned plates. The two first aligned plates correspond one-to-one to the two second aligned plates and are aligned laterally, so that the extension lines of the two first aligned plates form a rectangular pattern in the image of the first camera after being extended to the two second aligned plates. The two color difference plates are symmetrically arranged along the feed viewing slot.

8. The MOS tube detection device according to claim 7, characterized in that: The two first-edge plates are each provided with a first bevel at one end facing the feed viewing trough, and the two first bevels are symmetrically arranged. The two second-edge plates are each provided with a second bevel at one end facing the feed viewing trough, and the two second bevels are symmetrically arranged. The extension line of the side line of one of the first bevels is collinear with the extension line of the side line of one of the second bevels at the opposite corner, and the extension line of the side line of another of the first bevels is collinear with the extension line of the side line of another of the second bevels at the opposite corner.

9. The MOS tube detection device according to claim 2, characterized in that: The lifting assembly includes a fixed plate, a cylinder, a lifting and pressing plate, and a sliding cylinder. The fixed plate is fixedly connected to one side of the fixed frame, the cylinder is fixedly connected to the bottom of the fixed plate, the push rod of the cylinder passes through the fixed plate and is fixedly connected to one side of the lifting and pressing plate, one side of the conveying device is provided with an insertion groove, one end of the lifting and pressing plate extends into the insertion groove and is located below the conveyor belt of the conveying device and aligned with the contact detection part, the sliding cylinder is fixedly connected to the fixed plate longitudinally, the other end of the lifting and pressing plate longitudinally passes through the sliding cylinder and is slidably connected to the sliding cylinder, and the cylinder is electrically connected to the controller.

10. A MOS transistor detection method, according to the MOS transistor detection device according to any one of claims 1 to 8, characterized in that: include: S1-Material conveying: an external manipulator places the MOS tubes one by one on the front end of the conveying device. The MOS tubes are moved by the conveying device under the guidance of the guide contact detection component; S2-preliminary visual inspection: when the MOS tube moves to the center of the image of the first camera, the conveyor stops and the first camera performs a preliminary visual inspection on the MOS tube; S3 - Power-on test: If the MOS tube passes the preliminary visual inspection, the lifting assembly will lift the conveyor belt of the conveyor device to a preset height, so that the MOS tube is lifted and the pins of the MOS tube form a contact-type electrical connection with the guide contact detection assembly, so that the electrical inspection module can perform power-on test on the MOS tube; S4-Visual marking: After the power-on test, a row of MOS tubes moves toward the end of the conveyor. After the MOS tubes enter the identification and judgment zone, the second camera marks the MOS tubes that pass the power-on test with a first color in the image, and marks the MOS tubes that fail the power-on test with a second color in the image; S5-Blanking and sorting: a row of MOS tubes are moved out from the identification and judgment area one by one to the sorting device, and the controller issues corresponding sorting instructions to the sorting device. The sorting device transports the MOS tubes marked with the first color mark to the qualified channel and transports the MOS tubes marked with the second color mark to the waste channel.

Images