Semiconductor power device testing and sorting equipment based on visual inspection

Abstract

The invention relates to the field of semiconductor power device testing and sorting, in particular to semiconductor power device testing and sorting equipment based on visual inspection, which comprises an equipment box body, a feeding mechanism, a receiving mechanism and a testing mechanism, a protective cover is arranged on the front side of the upper end of the Z-axis upper installation frame, a warning lamp is fixedly installed on the side of the upper end of the Z-axis upper installation frame, a panel installation frame is fixedly installed on the side of the upper end face of the equipment box body, and a displayer is installed on the surface of the panel installation frame through a support. According to the full-automatic laser engraving machine, products are circularly transferred, steered and tested, defective products are classified and arranged, laser engraving is carried out, product appearance detection is carried out, and qualified products are automatically received, and the full-automatic laser engraving machine is of an integral turntable transfer structure, is circularly transferred, is high in speed, stable in operation and low in noise, does not need manual inspection, improves the product quality, and greatly reduces the labor cost and the customer complaint rate.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor power device testing and sorting, and in particular to semiconductor power device testing and sorting equipment based on visual detection. Background Art

[0002] Semiconductor power devices are mainly used as high-power electronic devices for power conversion and control circuits of power equipment. During production, semiconductor power devices are generally stored in material tubes after being packaged. During subsequent processing or packaging, they need to be tested. The pins of the semiconductor power devices are connected to the test pieces, and the products are tested using special test instruments.

[0003] Currently, the oblique-back equipment on the market is slow, noisy, cannot perform appearance inspection, and cannot guarantee product yield, while manual visual inspection cannot guarantee product quality.

[0004] Therefore, in order to address the problems that the existing semiconductor power device testing and sorting equipment is slow, cannot perform appearance inspection, and cannot guarantee product yield, a semiconductor power device testing and sorting equipment based on visual inspection can be designed. Through cyclic transfer, it has a fast speed, stable operation, low noise, and can perform visual inspection of the product surface. Summary of the invention

[0005] In order to overcome the problems of existing semiconductor power device testing and sorting equipment being slow, unable to perform appearance inspection, and unable to guarantee product yield.

[0006] The technical solution of the present invention is: a semiconductor power device testing and sorting device based on visual inspection, comprising an equipment box, a feeding mechanism, a receiving mechanism, and a testing mechanism, wherein a Z-axis upper mounting frame is fixedly mounted on the upper end surface of the equipment box, a protective cover is arranged on the front side of the upper end of the Z-axis upper mounting frame, a warning light is fixedly mounted on the side of the upper end surface of the Z-axis upper mounting frame, a panel mounting frame is fixedly mounted on the side of the upper end surface of the equipment box, and a display is mounted on the surface of the panel mounting frame through a bracket;

[0007] The feeding mechanism is composed of a lifting component and a material dividing component. A material box is fixedly installed on the left side of the upper end of the equipment box body through a mounting plate. A material bin is arranged on the upper end of the material box, and a material pipe is arranged on the inner side of the material bin. A material shifting cylinder is arranged on the upper end of the inner side of the equipment box body, and a material shifting plate is arranged on the output end of the material shifting cylinder. A material trough is provided on the surface of the material shifting plate, and the material trough and the material pipe are adapted. A feeding track is arranged on the side of the material box, a lifting component is arranged between the feeding track and the material box, and a material dividing component is arranged on the end of the feeding track away from the material box. A material receiving mechanism is arranged on the upper end surface of the equipment box body at the side of the feeding mechanism, and a material discharging mechanism is arranged on the side of the material receiving mechanism.

[0008] A turntable circulating material-retrieving mechanism is arranged at the upper end of the inner side of the protective cover, a positioning mechanism and a steering mechanism are arranged in sequence on the upper end surface of the equipment box body located outside the protective cover, and a small turntable transfer mechanism is arranged on the side of the turntable circulating material-retrieving mechanism at the upper end of the equipment box body;

[0009] The testing mechanism includes a brush cleaning component, a detection component, and a visual detection component. The upper end of the equipment box is located on the side of the small turntable transfer mechanism and is provided with a brush cleaning component, a detection component, and a visual detection component;

[0010] The material receiving mechanism includes a material receiving rack, the lower end of which is fixedly connected to the equipment box, material racks are arranged on both sides of the surface of the material receiving rack, a material receiving slide rail is arranged on the surface of the material receiving rack on the side of the material rack, a material dividing cylinder is arranged at the end of the material dividing slide rail, a material dividing block is installed at the output end of the material dividing cylinder, and a sensor is arranged on the surface of the material receiving rack on the side of the material receiving slide rail.

[0011] Preferably, the product in the material pipe is delivered by the feeding mechanism and sent into the turntable circulating material taking mechanism through the feeding track, and a plurality of mechanisms are arranged on the outside of the turntable, and are adapted to the small turntable transfer mechanism to realize circulating transfer, steering and testing, and the surface of the product is cleaned before testing, and the testing and appearance inspection are realized by using the detection components and the visual detection components, thereby ensuring the quality of the product. The turntable transfer structure has the advantages of circulating transfer, fast speed, stable operation and low noise, and no manual inspection is required, thereby improving product quality and greatly reducing labor costs and customer complaint rates.

[0012] Preferably, the material lifting assembly includes a material lifting seat, the lower end of the material lifting seat and the material box are rotatably connected via a rotating shaft, a tube pressing block is provided at the upper end of the material lifting seat, the upper end of the tube pressing block is movably connected to the material lifting seat via a tube pressing cylinder, a material jamming sensor is provided on the side of the surface of the material lifting seat, and the side of the lower end of the material lifting seat is movably connected to the material box via the tube lifting cylinder.

[0013] Preferably, the material dividing assembly includes a pressing block, a pressing fixing frame is provided on the surface of the feed track, a pressing cylinder is provided on the upper end of the pressing fixing frame, the output end of the pressing cylinder and the pressing block are connected through a connecting seat, a through hole is opened on the surface of the feed track, the pressing block and the through hole are adapted, a photoelectric sensor is provided on the surface of the feed track at the side of the pressing block, a suction block is provided at the end of the feed track, a material in place sensor is provided on the suction block, and a driving motor is provided at the lower end of the feed track.

[0014] Preferably, the turntable circulating material picking mechanism includes a circulating transfer turntable, the surface of which is provided with ear plates, the ear plates are distributed in a circular array, a suction nozzle rod is slidably installed on the ear plate, the upper end of the suction nozzle rod extends to the top of the ear plate and is fixedly installed with a top seat, the lower end of the suction nozzle rod extends to the bottom of the ear plate and is provided with a suction nozzle fixing block, the surface of the suction nozzle fixing block is provided with a vacuum interface, the lower end of the suction nozzle fixing block is fixedly installed with a shading plate, and the lower end of the shading plate is provided with a material picking suction nozzle.

[0015] Preferably, the small turntable transfer mechanism includes a small transfer turntable, a clamping claw assembly is arranged on the side of the surface of the small transfer turntable, a turntable protection cover is arranged on the upper end of the small transfer turntable, a transmission shaft is arranged on the lower end of the small transfer turntable, and the lower end of the circulating transfer turntable is arranged with the same transmission shaft, the lower ends of the two transmission shafts extend to the inner side of the equipment case where a transmission box is arranged, a pulley is installed on the surface of the transmission box through a connecting shaft, a drive motor is arranged on the side of the transmission box inside the equipment case, a rotating rod is installed on the output end of the drive motor, the surface of the rotating rod is arranged with the same pulley, the two pulleys are connected by belt drive, and a limit wheel is arranged on the surface of the belt on the inner side of the equipment case.

[0016] Preferably, the positioning mechanism and the steering mechanism are symmetrically arranged on both sides of the circulating transfer turntable, and the positioning mechanism includes a base 1, a positioning guide mold is arranged on the upper end of the base 1, and sensors are arranged on both sides of the upper end of the base 1;

[0017] The steering mechanism includes a base 2, a steering mold is arranged at the upper end of the base 2, a rotating motor is fixedly installed on the side of the base 2, the output end of the rotating motor is connected to the bottom of the steering mold, and photoelectric sensors are arranged on both sides of the steering mold at the upper end of the base 2.

[0018] Preferably, the brush cleaning assembly includes a support frame, the upper end of the support frame is fixedly mounted with a dust hood and a cleaning motor through a plate body, a brush is arranged on the inner side of the dust hood, the output end of the cleaning motor is connected to the brush, and a dust suction pipe joint is arranged at the upper end of the dust hood.

[0019] Preferably, the detection component includes a bottom box body, which is fixedly connected to the equipment box body, a test box is arranged at the upper end of the bottom box body, a positioning head is arranged at the upper end of the surface of the bottom box body, a test block is arranged at the upper end of the inner side of the test box, a test piece is arranged on the test block, two test blocks are symmetrically arranged above and below, both test blocks are movably connected to the surface of the bottom box body through a transmission structure, and a servo motor is arranged in the bottom box body.

[0020] Preferably, the visual inspection component includes a column, which is fixedly connected to the equipment box, and a detection plate and a camera connecting plate are installed on the surface of the column from bottom to top. An observation hole is opened on the surface of the detection plate, and a visual inspection camera is arranged on the surface of the camera connecting plate.

[0021] Preferably, the discharging mechanism includes a discharging seat, which is fixedly connected to the equipment box, and the upper end surface of the discharging seat is provided with a discharging slide rail, and the upper end surface of the discharging seat is located on the side of the discharging slide rail and a discharging sensor is provided, and an outer box body is provided on the discharging seat, and a discharging box is installed on the inner side of the outer box body through a screw lifting structure, and a material pipe is provided in the discharging box, and the material pipe and the discharging slide rail are adapted.

[0022] Beneficial effects of the present invention:

[0023] The semiconductor power device testing and sorting equipment based on visual inspection, when feeding, lifts one end of the material tube by the lifting component, and the product in the material tube naturally slides outward, and enters the material separation component through the feeding track, controls and senses the speed of product feeding, and is convenient for adapting to the turntable transfer structure. The product is circulated and transported on the turntable circulation material taking mechanism and the small turntable transfer mechanism, and passes through the positioning mechanism and the steering mechanism in turn. It is positioned and turned before testing to facilitate testing, and then enters the testing mechanism to clean the product and realize visual inspection. Finally, according to the bad classification signal given by the test result, the defective products are discharged into different material tubes for sorting, and the good products are collected by the collecting mechanism and reloaded into the material tube. The overall turntable transfer structure, circulation transfer, fast speed, stable operation, low noise, no need for manual inspection, improve product quality, and greatly reduce labor costs and customer complaints. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure of the semiconductor power device testing and sorting equipment based on visual inspection of the present invention is shown. Figure 1 ;

[0025] Figure 2 The overall structure of the semiconductor power device testing and sorting equipment based on visual inspection of the present invention is shown. Figure 2 ;

[0026] Figure 3 Shown is a schematic diagram of the material box structure of the semiconductor power device testing and sorting equipment based on visual inspection of the present invention;

[0027] Figure 4 The present invention is shown Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 Shown is a schematic diagram of the structure of a turntable circulating material taking mechanism of a semiconductor power device testing and sorting equipment based on visual inspection of the present invention;

[0029] Figure 6 The present invention is shown Figure 5 The enlarged structural diagram at B in the middle;

[0030] Figure 7 What is shown is a schematic diagram of a top view of a circulating transfer turntable of a semiconductor power device testing and sorting equipment based on visual inspection according to the present invention;

[0031] Figure 8 Shown is a schematic diagram of the structure of a circular transfer turntable of a semiconductor power device testing and sorting equipment based on visual inspection of the present invention;

[0032] Fig. 9 Shown is a schematic diagram of the structure of a brush cleaning component of a semiconductor power device testing and sorting equipment based on visual inspection of the present invention;

[0033] Fig.10 Shown is a schematic diagram of the structure of the detection component of the semiconductor power device testing and sorting equipment based on visual detection of the present invention;

[0034] Fig.11 Shown is a schematic diagram of the structure of the visual inspection component of the semiconductor power device testing and sorting equipment based on visual inspection of the present invention.

[0035] Explanation of reference numerals: 1. Equipment box; 2. Mounting frame on Z axis; 3. Protective cover; 31. Circular transfer turntable; 311. Base 1; 312. Base 2; 32. Suction nozzle rod; 33. Suction nozzle fixing block; 34. Shading plate; 35. Material suction nozzle; 36. Small transfer turntable; 361. Support frame; 362. Dust cover; 363. Bottom box; 364. Column; 365. Visual inspection camera ; 37. Transmission box; 38. Rotating rod; 4. Warning light; 5. Panel mounting bracket; 6. Display; 7. Material box; 71. Lifting seat; 72. Pressing pipe block; 73. Lifting pipe cylinder; 8. Material bin; 9. Feed track; 91. Pressing block; 92. Pressing fixing bracket; 93. Pressing cylinder; 94. Suction block; 10. Material receiving rack; 101. Discharging seat; 102. Discharging slide rail; 11. Material receiving slide rail. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Example 1

[0038] See also Figure 1-Figure 7 The present invention provides an embodiment: a semiconductor power device testing and sorting device based on visual inspection, comprising an equipment box 1, a feeding mechanism, a receiving mechanism, and a testing mechanism, a Z-axis upper mounting frame 2 is fixedly mounted on the upper end surface of the equipment box 1, a protective cover 3 is arranged on the front side of the upper end of the Z-axis upper mounting frame 2, a warning light 4 is fixedly mounted on the side of the upper end of the Z-axis upper mounting frame 2, a panel mounting frame 5 is fixedly mounted on the side of the upper end surface of the equipment box 1, and a display 6 is mounted on the surface of the panel mounting frame 5 through a bracket;

[0039] The feeding mechanism is composed of a lifting component and a material dividing component. A material box 7 is fixedly installed on the left side of the upper end of the equipment box body 1 through a mounting plate. A material bin 8 is arranged on the upper end of the material box 7. A material pipe is arranged on the inner side of the material bin 8. A material shifting cylinder is arranged on the upper end of the inner side of the equipment box body 1. A material shifting plate is installed on the output end of the material shifting cylinder. A material trough is provided on the surface of the material shifting plate. The material trough and the material pipe are adapted. A feeding track 9 is arranged on the side of the material box 7. A lifting component is arranged between the feeding track 9 and the material box 7. A material dividing component is arranged on the end of the feeding track 9 away from the material box 7. A material receiving mechanism is arranged on the upper end surface of the equipment box body 1 at the side of the feeding mechanism, and a material discharging mechanism is arranged on the side of the material receiving mechanism.

[0040] A turntable circulation material taking mechanism is arranged at the upper end of the inner side of the protective cover 3, a positioning mechanism and a steering mechanism are arranged in sequence on the upper end surface of the equipment box body 1 located on the outer side of the protective cover 3, and a small turntable transfer mechanism is arranged on the upper end of the equipment box body 1 located on the side of the turntable circulation material taking mechanism;

[0041] The testing mechanism includes a brush cleaning component, a detection component, and a visual detection component. The upper end of the equipment box 1 is located on the side of the small turntable transfer mechanism and is provided with a brush cleaning component, a detection component, and a visual detection component;

[0042] The material receiving mechanism includes a material receiving rack 10, the lower end of which is fixedly connected to the equipment box 1, and material racks are arranged on both sides of the surface of the material receiving rack 10, and a material receiving slide rail 11 is arranged on the surface of the material receiving rack 10 on the side of the material rack, and a material dividing cylinder is arranged at the end of the material dividing cylinder, and a material dividing block is installed at the output end of the material dividing cylinder, and a sensor is arranged on the surface of the material receiving rack 10 on the side of the material receiving slide rail 11.

[0043] In this embodiment: the product in the material tube is sent out by the feeding mechanism and sent into the turntable circulating material taking mechanism through the feeding track 9, and a plurality of mechanisms are arranged on the outside of the turntable, and are adapted to the small turntable transfer mechanism to realize circulating transfer, steering and testing, and the surface of the product is cleaned before testing, and the testing and appearance inspection are realized by using the detection components and the visual detection components, thereby ensuring the quality of the product. The turntable transfer structure has the advantages of circulating transfer, fast speed, stable operation and low noise, and no manual inspection is required, thereby improving product quality and greatly reducing labor costs and customer complaint rates.

[0044] The material lifting assembly includes a material lifting seat 71, the lower end of the material lifting seat 71 is rotatably connected to the material box 7 via a rotating shaft, a tube pressing block 72 is provided at the upper end of the material lifting seat 71, the upper end of the tube pressing block 72 is movably connected to the material lifting seat 71 via a tube pressing cylinder, a material jamming sensor is provided on the side of the surface of the material lifting seat 71, and the side of the lower end of the material lifting seat 71 is movably connected to the material box 7 via a tube lifting cylinder 73.

[0045] The material dividing assembly includes a pressing block 91, a pressing fixing frame 92 is provided on the surface of the feed track 9, a pressing cylinder 93 is provided on the upper end of the pressing fixing frame 92, the output end of the pressing cylinder 93 is connected to the pressing block 91 through a connecting seat, a through hole is opened on the surface of the feed track 9, the pressing block 91 and the through hole are adapted, a photoelectric sensor is provided on the surface of the feed track 9 at the side of the pressing block 91, a suction block 94 is provided at the end of the feed track 9, a material in place sensor is provided on the suction block 94, and a driving motor is provided at the lower end of the feed track 9.

[0046] The discharging mechanism includes a discharging seat 101, which is fixedly connected to the equipment box 1, and a discharging slide rail 102 is arranged on the upper end surface of the discharging seat 101. A discharging sensor is arranged on the upper end surface of the discharging seat 101 and located on the side of the discharging slide rail 102. An outer box body is arranged on the discharging seat 101, and a discharging box is installed on the inner side of the outer box body through a screw lifting structure. The screw lifting structure is controlled by a servo motor, and a material pipe is arranged in the discharging box, which is adapted to the discharging slide rail 102.

[0047] In this embodiment: the material tubes are stacked in the silo 8, and the bottom material moving cylinder controls the movement of the material moving plate, and drives the bottom material tube to move, and the end of the material tube is sent into the lifting seat 71, and adapted to the feeding track 9, so that the tube pressing cylinder pushes the lifting seat 71 to rotate, lifts the material tube to an inclined state, and the product in the material tube naturally slides down and enters the feeding track 9, and is separated by the material separation component, and the material pressing cylinder 93 is used to push the pressing block 91 downward to press the product into the feeding track 9, and the feeding speed is controlled, and the driving motor is used as a power source to facilitate the product to be pushed out and realize the feeding;

[0048] The discharge mechanism is mainly used for discharging defective products after detection. The defective products are transferred to the discharge seat 101. The products can be sent into the material tube by the discharge slide rail 102, and the defective products are collected and discharged. At the same time, eight material tubes can be placed in the discharge box. The servo motor drives the lower screw lifting structure to drive the discharge box to rise and fall, and according to the defective classification signal, the defective products marked by the software are discharged into different material tubes.

[0049] Example 2

[0050] See also Figure 3 and Figure 5On the basis of Example 1, the present application provides a technical solution: a turntable circulating material taking mechanism includes a circulating transfer turntable 31, and an ear plate is provided on the surface of the circulating transfer turntable 31, and the ear plates are distributed in a ring array. A suction nozzle rod 32 is slidably installed on the ear plate, and the upper end of the suction nozzle rod 32 extends to the top of the ear plate and is fixedly installed with a top seat, and the lower end of the suction nozzle rod 32 extends to the bottom of the ear plate and is provided with a suction nozzle fixing block 33, and a vacuum interface is provided on the surface of the suction nozzle fixing block 33, and a shading plate 34 is fixedly installed on the lower end of the suction nozzle fixing block 33, and a material taking suction nozzle 35 is provided at the lower end of the shading plate 34.

[0051] The small turntable transfer mechanism includes a small transfer turntable 36, a clamping claw assembly is provided on the side of the surface of the small transfer turntable 36, a turntable protection cover is provided on the upper end of the small transfer turntable 36, a transmission shaft is provided at the lower end of the small transfer turntable 36, and the lower end of the circulating transfer turntable 31 is provided with the same transmission shaft, the lower ends of the two transmission shafts are extended to the inner side of the equipment case 1 to be provided with a transmission box 37, the surface of the transmission box 37 is installed with a pulley through a connecting shaft, a driving motor is provided on the side of the transmission box 37 inside the equipment case 1, a rotating rod 38 is installed on the output end of the driving motor, the surface of the rotating rod 38 is provided with the same pulley, the two pulleys are connected by belt drive, and a limit wheel is provided on the surface of the belt on the inner side of the equipment case 1.

[0052] The positioning mechanism and the steering mechanism are symmetrically arranged on both sides of the circulating transfer turntable 31. The positioning mechanism includes a base 311. A positioning guide mold is arranged on the upper end of the base 311. Sensors are arranged on both sides of the upper end of the base 311.

[0053] The steering mechanism includes a second base 312, a steering mold is arranged at the upper end of the second base 312, a rotating motor is fixedly installed on the side of the second base 312, the output end of the rotating motor is connected to the bottom of the steering mold, and photoelectric sensors are arranged on both sides of the steering mold at the upper end of the second base 312.

[0054] In this embodiment: the turntable circulating material taking mechanism and the small turntable transfer mechanism are both controlled by the bottom driving motor, and the driving motor drives the rotating rod 38 to rotate, and the belt pulley drives the circulating transfer turntable 31 and the small transfer turntable 36 to rotate synchronously. After the product is fed in, the product is sucked by the material taking nozzle 35, which facilitates the transfer of the product between different mechanisms;

[0055] After the circulating transfer turntable 31 absorbs the product, the circulating transfer turntable 31 rotates to first send the product into the positioning mechanism and the steering mechanism to position and steer the product, which is convenient for subsequent testing.

[0056] Example 3

[0057] See also Figure 3 and Figure 6 , Figure 7 On the basis of Example 1, the present application provides a technical solution: the brush cleaning assembly includes a support frame 361, a dust cover 362 and a cleaning motor are fixedly mounted on the upper end of the support frame 361 through a plate body, a brush is arranged on the inner side of the dust cover 362, the output end of the cleaning motor is connected to the brush, and a dust suction pipe joint is arranged on the upper end of the dust cover 362.

[0058] The detection component includes a bottom box 363, which is fixedly connected to the equipment box 1, a test box is arranged at the upper end of the bottom box 363, a positioning head is arranged at the upper end of the surface of the bottom box 363, a test block is arranged at the upper end of the inner side of the test box, a test piece is arranged on the test block, two test blocks are symmetrically arranged above and below, both test blocks are movably connected to the surface of the bottom box 363 through a transmission structure, and a servo motor is arranged in the bottom box 363.

[0059] The visual inspection component includes a column 364, which is fixedly connected to the equipment box 1. The surface of the column 364 is installed with an inspection plate and a camera connecting plate from bottom to top. The surface of the inspection plate is provided with an observation hole, and the surface of the camera connecting plate is provided with a visual inspection camera 365.

[0060] In this embodiment: when the product is transferred to the small transfer turntable 36, the product is clamped and fixed by the clamping claw assembly and sent to the brush cleaning assembly, and the surface of the product is cleaned by the brush. The cleaning motor drives the brush to rotate, which facilitates the cleaning work;

[0061] Then, the cleaned product is sent into the testing assembly, and the test blocks on both sides move synchronously, and the test piece and the pins of the product are in contact to realize the testing work;

[0062] Finally, the product is sent to the visual inspection component, and the surface of the product is inspected using the visual inspection camera 365. At the same time, a classification signal for defective products is given based on the inspection data and visual inspection information.

[0063] During operation, the material tubes are stacked in the silo 8, and the bottom material moving cylinder controls the material moving plate to move, and drives the bottom material tube to move, and sends the end of the material tube into the lifting seat 71, and adapts to the feeding track 9, so that the tube pressing cylinder pushes the lifting seat 71 to rotate, lifts the material tube to an inclined state, and the product in the material tube naturally slides down and enters the feeding track 9, and is separated by the material separation component, and the material pressing cylinder 93 is used to push the pressing block 91 downward to press the product into the feeding track 9, and the feeding speed is controlled, and the driving motor is used as a power source to facilitate the product to be pushed out and realize the feeding;

[0064] The turntable circulating material taking mechanism and the small turntable transfer mechanism are both controlled by the bottom driving motor. The driving motor drives the rotating rod 38 to rotate, and the belt pulley drives the circulating transfer turntable 31 and the small transfer turntable 36 to rotate synchronously. After the product is fed, the product is sucked by the material taking suction nozzle 35, which is convenient for the transfer of the product between different mechanisms. After the circulating transfer turntable 31 sucks the product, the circulating transfer turntable 31 rotates to first send the product into the positioning mechanism and the steering mechanism to position and steer the product, which is convenient for subsequent testing.

[0065] Before the test, when the product is transferred to the small transfer turntable 36, the product is clamped and fixed by a clamping claw combination and sent to the brush cleaning assembly, where the surface of the product is cleaned by the brush. The cleaning motor drives the brush to rotate to facilitate the cleaning work. Then, the cleaned product is sent to the detection assembly, and the test blocks on both sides move synchronously. The test piece and the pins of the product are in contact to realize the test work. Finally, the product is sent to the visual inspection assembly, and the surface of the product is inspected by the visual inspection camera 365. At the same time, a classification signal of defective products is given according to the inspection data and visual inspection information. When discharging, the discharge mechanism is mainly used to discharge defective products after inspection, and the defective products are transferred to the discharge seat 101. The product can be sent to the material tube by the discharge slide rail 102, and the defective products are collected and discharged. At the same time, eight material tubes can be placed in the discharge box. The servo motor drives the lower screw lifting structure to drive the discharge box to lift and move, and according to the defective classification signal, the defective products marked by the software are discharged into different material tubes respectively, and the good products are collected by the receiving mechanism and reloaded into the material tube.

[0066] Through the above steps, the detection components and visual inspection components are used to realize testing and appearance inspection, thereby ensuring the quality of the product. The turntable transfer structure and circular transfer are fast, stable and low-noise, and no manual inspection is required, thereby improving product quality and greatly reducing labor costs and customer complaints. This solves the problems of slow speed, inability to perform appearance inspection and inability to guarantee product yield in existing semiconductor power device testing and sorting equipment.

[0067] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A semiconductor power device testing and sorting device based on visual inspection, comprising a device housing (1), characterized in that: It also includes a feeding mechanism, a receiving mechanism, and a testing mechanism. A Z-axis mounting frame (2) is fixedly mounted on the upper end surface of the equipment box (1). A protective cover (3) is arranged on the front side of the upper end of the Z-axis mounting frame (2). A warning light (4) is fixedly mounted on the side of the upper end of the Z-axis mounting frame (2). A panel mounting frame (5) is fixedly mounted on the side of the upper end surface of the equipment box (1). A display (6) is mounted on the surface of the panel mounting frame (5) via a bracket. The feeding mechanism is composed of a lifting component and a material dividing component. A material box (7) is fixedly installed on the left side of the upper end of the equipment box body (1) through a mounting plate. A material bin (8) is arranged on the upper end of the material box (7). A material pipe is arranged on the inner side of the material bin (8). A material moving cylinder is arranged on the upper end of the inner side of the equipment box body (1). A material moving plate is arranged on the output end of the material moving cylinder. A material trough is provided on the surface of the material moving plate. The material trough and the material pipe are adapted. A feeding track (9) is arranged on the side of the material box (7). A lifting component is arranged between the feeding track (9) and the material box (7). A material dividing component is arranged on the end of the feeding track (9) away from the material box (7). A material receiving mechanism is arranged on the upper end surface of the equipment box body (1) at the side of the feeding mechanism. A material discharging mechanism is arranged on the side of the receiving mechanism. A turntable circulating material-retrieving mechanism is arranged at the upper end of the inner side of the protective cover (3); a positioning mechanism and a steering mechanism are arranged in sequence on the upper end surface of the equipment box (1) located outside the protective cover (3); and a small turntable transfer mechanism is arranged on the upper end of the equipment box (1) located on the side of the turntable circulating material-retrieving mechanism; The testing mechanism comprises a brush cleaning component, a detection component and a visual detection component. The upper end of the equipment box (1) is located on the side of the small turntable transfer mechanism and is provided with a brush cleaning component, a detection component and a visual detection component. The material receiving mechanism comprises a material receiving rack (10), the lower end of the material receiving rack (10) is fixedly connected to the equipment box (1), material racks are arranged on both sides of the surface of the material receiving rack (10), a material receiving slide rail (11) is arranged on the surface of the material receiving rack (10) at the side of the material rack, a material dividing cylinder is arranged at the end of the material dividing slide rail (11), a material dividing block is installed at the output end of the material dividing cylinder, and a sensor is arranged on the surface of the material receiving rack (10) at the side of the material receiving slide rail (11).

2. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1 is characterized in that: The material lifting assembly comprises a material lifting seat (71), the lower end of the material lifting seat (71) is rotatably connected to a material box (7) via a rotating shaft, a pipe pressing block (72) is arranged at the upper end of the material lifting seat (71), the upper end of the pipe pressing block (72) is movably connected to the material lifting seat (71) via a pipe pressing cylinder, a material blocking sensor is arranged on the side of the surface of the material lifting seat (71), and the side of the lower end of the material lifting seat (71) is movably connected to the material box (7) via a pipe lifting cylinder (73).

3. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The material dividing assembly comprises a material pressing block (91), a material pressing fixing frame (92) is arranged on the surface of the material feeding track (9), a material pressing cylinder (93) is arranged at the upper end of the material pressing fixing frame (92), an output end of the material pressing cylinder (93) and the material pressing block (91) are connected via a connecting seat, a through hole is opened on the surface of the material feeding track (9), the material pressing block (91) and the through hole are adapted, a photoelectric sensor is arranged on the surface of the material feeding track (9) at the side of the material pressing block (91), a material suction block (94) is arranged at the end of the material feeding track (9), a material in place sensor is arranged on the suction block (94), and a driving motor is arranged at the lower end of the material feeding track (9).

4. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The turntable circulating material taking mechanism comprises a circulating transfer turntable (31), the surface of the circulating transfer turntable (31) is provided with ear plates, the ear plates are distributed in a ring array, a suction nozzle rod (32) is slidably mounted on the ear plate, the upper end of the suction nozzle rod (32) extends to the top of the ear plate and is fixedly mounted with a top seat, the lower end of the suction nozzle rod (32) extends to the bottom of the ear plate and is provided with a suction nozzle fixing block (33), a vacuum interface is provided on the surface of the suction nozzle fixing block (33), a shading plate (34) is fixedly mounted on the lower end of the suction nozzle fixing block (33), and a material taking suction nozzle (35) is provided at the lower end of the shading plate (34).

5. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The small turntable transfer mechanism comprises a small transfer turntable (36), a clamping claw assembly is arranged on the side of the surface of the small transfer turntable (36), a turntable protection cover is arranged on the upper end of the small transfer turntable (36), a transmission shaft is arranged on the lower end of the small transfer turntable (36), and the lower end of the circulating transfer turntable (31) is arranged with the same transmission shaft, the lower ends of the two transmission shafts are both extended to the inner side of the equipment box (1) to be provided with a transmission box (37), the surface of the transmission box (37) is provided with a pulley through a connecting shaft, a driving motor is arranged on the side of the transmission box (37) inside the equipment box (1), a rotating rod (38) is installed at the output end of the driving motor, the surface of the rotating rod (38) is provided with the same pulley, the two pulleys are connected by belt transmission, and a limit wheel is arranged on the surface of the belt inside the equipment box (1).

6. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The positioning mechanism and the steering mechanism are symmetrically arranged on both sides of the circulating transfer turntable (31), and the positioning mechanism includes a base (311), a positioning guide mold is arranged at the upper end of the base (311), and sensors are arranged on both sides of the upper end of the base (311); The steering mechanism comprises a second base (312), a steering mould is arranged at the upper end of the second base (312), a rotating motor is fixedly installed at the side of the second base (312), the output end of the rotating motor is connected to the bottom of the steering mould, and photoelectric sensors are arranged at both sides of the steering mould at the upper end of the second base (312).

7. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The brush cleaning assembly comprises a support frame (361), a dust cover (362) and a cleaning motor are fixedly mounted on the upper end of the support frame (361) through a plate body, a brush is arranged on the inner side of the dust cover (362), an output end of the cleaning motor is connected to the brush, and a dust suction pipe joint is arranged on the upper end of the dust cover (362).

8. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The detection assembly comprises a bottom box (363), the bottom box (363) and the equipment box (1) are fixedly connected, a test box is arranged at the upper end of the bottom box (363), a positioning head is arranged at the upper end of the surface of the bottom box (363), a test block is arranged at the upper end of the inner side of the test box, a test piece is arranged on the test block, two test blocks are arranged symmetrically in the upper and lower parts, the two test blocks are movably connected to the surface of the bottom box (363) through a transmission structure, and a servo motor is arranged in the bottom box (363).

9. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The visual inspection component comprises a column (364), the column (364) is fixedly connected to the equipment box (1), a detection plate and a camera connecting plate are installed on the surface of the column (364) from bottom to top, an observation hole is opened on the surface of the detection plate, and a visual inspection camera (365) is arranged on the surface of the camera connecting plate.

10. The semiconductor power device testing and sorting equipment based on visual inspection according to claim 1, characterized in that: The discharging mechanism comprises a discharging seat (101), the discharging seat (101) is fixedly connected to the equipment box (1), the upper end surface of the discharging seat (101) is provided with a discharging slide rail (102), the upper end surface of the discharging seat (101) is located on the side of the discharging slide rail (102) and a discharging sensor is provided, the discharging seat (101) is provided with an outer box body, the inner side of the outer box body is installed with a discharging box through a screw lifting structure, and a material pipe is provided in the discharging box, and the material pipe and the discharging slide rail (102) are adapted.

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