Plastic package surface-mounted discrete semiconductor device aging feeding device

Abstract

The utility model provides a plastic package surface-mounted discrete semiconductor device aging feeding device. The plastic package surface-mounted discrete semiconductor device aging feeding device comprises a middle rotating disc, a vibration feeding disc, a detection rotating disc, an aging feeding bin, a middle belt, a material taking and placing device and an aging discharging bin which are installed on a bottom plate. Through action cooperation among a plurality of sets of mechanical transmission devices, qualified products passing a parameter test are automatically loaded into the burn-in board. After the aging of the product is completed, the aging plate is loaded into the aging plate loading and unloading bin, the equipment automatically takes out the aged product, appearance defect detection and electrical parameter test are carried out, and the product with qualified appearance detection and electrical parameter is braided. In the whole process, the product does not need to be manually put into the burn-in board clamp and taken out of the burn-in board clamp; the labor intensity of workers is effectively reduced, the production efficiency and the qualified rate are improved, the production cost is reduced, and the consistency and the stability of products are guaranteed.

Description

Technical Field

[0001] The utility model relates to an aging feeding device for plastic-sealed surface-mounted semiconductor discrete devices. Background Art

[0002] The existing testing process for plastic-encapsulated surface-mount semiconductor discrete devices (hereinafter collectively referred to as "products") is to put the products into a sorting machine for preliminary screening, and then manually load the qualified products into the corresponding fixtures on the aging board one by one with tweezers and put them into the aging table for trial aging process; when the aging test is completed, the products are taken out for appearance and electrical parameter testing and screening after the aging test, and then put into the taping machine for taping and packaging. Due to the small size and large quantity of products, they must be manually loaded into the aging board each time, and taken out after the aging test for appearance and electrical parameter screening. The production and assembly efficiency of this method is low and it consumes a lot of manpower. In addition, the screening after the aging test is to introduce the products into the vibration plate, which increases the risk of appearance defects and becomes the production bottleneck of this type of product. For example, a multi-station automatic chip loading and unloading device disclosed in publication number CN113460680B has functional positions such as screening and spacing set in the transportation direction of the aging board, but their functions are distributed in sequence in the transportation direction of the aging board. Each chip can only pass through each station in turn, resulting in the functional components on each station can only detect the same chip once. If the same function needs to be checked repeatedly, it is necessary to add devices with corresponding functions on the path, resulting in increased process costs. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an aging feeding device for plastic-sealed surface-mounted semiconductor discrete devices.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model provides an aging feeding device for plastic-sealed surface-mounted semiconductor discrete devices, comprising an intermediate turntable installed on a bottom plate, a vibrating feeding plate, an inspection turntable, an aging feeding bin, an intermediate belt, a picking and unloading device, and an aging unloading bin; the inspection turntable and the picking and unloading device are respectively provided with transfer points docked with the opposite ends of the intermediate turntable, the inspection turntable is connected to the vibrating feeding plate through a loading slide rail inclined thereto, the intermediate belt is installed below the picking and unloading device, the aging feeding bin and the aging unloading bin are respectively connected to the two ends of the intermediate belt, and the periphery of the inspection turntable is evenly and sequentially provided with a picking station, an appearance inspection station, a packaging station, a first waste collection station, a performance inspection station, a second waste station, a transfer station, and a reserved station with the rotating shaft of the inspection turntable as the center.

[0006] The material picking station is provided with a platform connected to the bottom of the loading slide rail; the appearance inspection station, packaging station, first waste collection station, performance inspection station and second waste station are respectively provided with an industrial camera, a tape braider, a first waste box, an electrical parameter test bench and a second waste box; the transfer station is arranged on the edge of the middle turntable, and the reserved station is left vacant.

[0007] The detection turntable includes a vertically fixed drive motor, the shaft of which is mounted at the center of a turntable below the drive motor, eight connecting plates are evenly fixed to the side of the turntable, the eight connecting plates extend like a flower and a vertical movable slide is vertically mounted at the end, and a self-rotating suction nozzle is vertically mounted at the lower end of the vertical movable slide.

[0008] A collection plate is also fixed to the upper end of the turntable. A through hole is provided in the center of the collection plate and is sleeved on the rotating shaft of the driving motor. The driving motor has an integrated cavity. Air holes are evenly processed on the side walls of the driving motor and are connected to the self-rotating suction nozzles on different vertical moving slides through air pipes with solenoid valves.

[0009] The intermediate turntable includes a turntable, the center of which is installed on the rotating shaft of the support platform, the support platform is vertically fixed on the base plate, and four transparent square grooves are evenly installed on the edge of the upper end surface of the turntable. An industrial camera is installed on the base plate below each transparent square groove. Two of the transparent square grooves are respectively arranged directly below the transfer station and the material picking and unloading point of the material picking and unloading device. An industrial camera is also installed relatively above one of the transparent square grooves through a camera support plate.

[0010] The material picking and unloading device includes a vertical movable slide for picking materials and a horizontal slide. The vertical movable slide for picking materials is vertically installed on the movable end of the horizontal slide. The side of the horizontal slide is fixed on the slide mounting plate. The two ends of the slide mounting plate are fixedly supported on the bottom plate by slide support frames. A self-rotating suction nozzle is vertically installed on the lower end of the vertical movable slide for picking materials. The vertical movable slide for picking materials is placed near the end of the stroke of the middle turntable. The transfer point is directly below the bottom end of the self-rotating suction nozzle on the vertical movable slide for picking materials.

[0011] The intermediate belt includes a flat belt, which is fixedly supported on the bottom plate by a belt support column and is perpendicular to the horizontal slide. A pressure strip perpendicular to the flat belt is provided above the middle of the flat belt, and both ends of the pressure strip are fixed to the protruding ends of two cover opening cylinders. The cover opening cylinders are fixedly supported on the bottom plate by pillars.

[0012] The aging loading bin and the aging unloading bin have the same structure, and the aging loading bin and the aging unloading bin are installed relatively to each other. The aging loading bin includes a loading belt and a limiting support column. The rotating shafts at both ends of the loading belt are respectively in the middle of four relative limiting support columns. The bottom of the limiting support column is fixed on the bottom plate. The upper inner side of the limiting support column is processed with a right-angle groove. The outer sides of the two limiting support columns on both sides of the loading belt are respectively connected by a horizontal plate. A vertically downward lifting cylinder is installed in the middle of the horizontal plate, and a horizontal pushing cylinder is vertically installed at the protruding end of the lifting cylinder. The protruding end of the horizontal pushing cylinder is perpendicular to the feeding belt and is installed with a lifting plate. The inward side of the lifting plate is set to be L-shaped, and its bottom is slightly higher than the end face of the feeding belt.

[0013] The feeding belt includes a strip belt and a belt shaft. Both ends of the two belt shafts are installed in the middle of a limited support column. The two strip belts are parallel to the two ends of the tensioned belt shafts. A support plate is provided in the space between the two strip belts. The support plate is installed on the protruding shaft of the support cylinder, and the support cylinder is fixed on the bottom plate.

[0014] The top of the right-angle groove is processed with a chamfer.

[0015] The beneficial effects of the utility model are: through the cooperation of multiple sets of mechanical transmission devices, qualified products that have passed the parameter test are automatically loaded into the aging board; after the product aging is completed, the aging board is loaded into the upper and lower bins of the aging board, and the equipment automatically takes out the aged products, performs appearance defect detection and electrical parameter testing, and tapes the appearance inspection and electrical parameter qualified products. During the whole process, there is no need to manually put the product into the aging board fixture and take the product out of the aging board fixture; it effectively reduces the labor intensity of the staff, improves production efficiency and qualified rate, reduces production costs, and ensures product consistency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the detection turntable structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the intermediate turntable of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the loading and unloading device of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the aging upper and lower bins of the utility model when loading;

[0021] Figure 6 This is a schematic diagram of the structure of the aging upper and lower bins of the utility model when they are empty;

[0022] Figure 7 This is a workstation location structure diagram of the utility model;

[0023] In the figure: 1-bottom plate, 2-feeding slide rail, 3-middle turntable, 31-camera support plate, 32-transparent square groove, 33-support table, 34-turntable, 35-industrial camera, 4-vibration feeding plate, 5-detection turntable, 51-drive motor, 52-convergence plate, 53-vertical moving slide, 54-connecting plate, 55-turntable, 6-aging feeding bin, 61-feeding belt, 611-strip belt, 612-belt shaft, 613-belt motor, 62-limit support column, 621-chamfer, 622-right angle groove, 63-cross plate, 64 -Lifting cylinder, 65-support plate, 66-support cylinder, 67-lifting plate, 68-transverse pushing cylinder, 7-middle belt, 71-flat belt, 72-opening cylinder, 73-belt support column, 74-pressing strip, 8-material picking and unloading device, 81-material picking vertical moving slide, 82-slide mounting plate, 83-horizontal slide, 84-slide support frame, 9-aging unloading bin, 10-taping machine, 11-first waste box, 12-electrical parameter test bench, 13-second waste box, 14-self-rotating suction nozzle, 15-aging board, 16-aging fixture. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0025] like Figure 1 As shown, a plastic-sealed surface-mounted semiconductor discrete device aging feeding device comprises an intermediate turntable 3, a vibrating feeding tray 4, a detection turntable 5, an aging feeding bin 6, an intermediate belt 7, a picking and unloading device 8, and an aging unloading bin 9 installed on a bottom plate 1; the detection turntable 5 and the picking and unloading device 8 are respectively provided with transfer points to dock with the opposite ends of the intermediate turntable 3, the detection turntable 5 is connected to the vibrating feeding tray 4 through a loading slide rail 2 inclined thereto, the intermediate belt 7 is installed below the picking and unloading device 8, the aging feeding bin 6 and the aging unloading bin 9 are respectively connected to the two ends of the intermediate belt 7, and the periphery of the detection turntable 5 is evenly arranged with a picking station, an appearance inspection station, a packaging station, a first waste collection station, a performance inspection station, a second waste station, a transfer station, and a reserved station with the rotating shaft of the detection turntable 5 as the center.

[0026] The feeding process of this device is as follows:

[0027] Process 1: manually put the required products into the vibrating loading tray 4, and then put the empty aging board into the aging lower bin 9;

[0028] Process 2: Start the equipment, move the products one by one into the loading slide rail 2 through vibration, and slide them onto the platform at the material removal station, such as Figure 7 As shown, the detection turntable starts to run, the vertical movable slide 53 at the A-material picking station moves down to suck the product through the self-rotating suction nozzle 14, and then rises, and moves to the B-appearance inspection station through rotation, and the industrial camera at the bottom takes pictures and transmits information to the controller. After the controller recognizes the angle of the product, the self-rotating suction nozzle 14 rotates to adjust the product position and angle to the preset angle of the controller, and then the detection turntable rotates to rotate the self-rotating suction nozzle 14 to the C-packaging station, but no action is taken; then it rotates to the D-first waste station, and also no action is taken; after rotating to the E performance inspection station, the self-rotating suction nozzle 14 puts the product into the electrical parameter test bench 12 to perform a preliminary screening of the electrical parameters of the product; then it rotates to the F second waste station, and puts the products that have not passed the preliminary screening into the second waste box; the products that have passed the preliminary screening continue to rotate to the G-transfer station, and the vertical movable slide 53 moves down, and the industrial camera at its bottom adjusts the product position to the required position and then puts it into the transparent square groove 32; the whole process is an uninterrupted step rotation, and the rotation angle is the same each time;

[0029] Process three: The aging unloading bin 9 simultaneously transmits the aging board, and the supporting cylinder on 9 pushes up. After it is in place, the lifting cylinder shrinks and moves up by the thickness of an aging board. After it is in place, the horizontal push cylinder extends to separate the bottom aging board; at the same time, the supporting cylinder shrinks and moves down to place the bottom aging board on the crawler belt, and at the same time, the motor starts to move the aging board to the middle belt 7, and the lifting cylinder extends and moves down. At this point, the unloading work of the aging board in the unloading bin is completed;

[0030] Process 4: The middle belt works. After the aging board is moved to the bottom of the loading and unloading device through the middle belt, the clamp device is turned on to work, the sealing cover on the aging board clamp is opened, and the product is waiting to be filled;

[0031] Process 5: Figure 7 As shown in the figure, after the middle turntable is placed at point 1 of the middle turntable, the middle turntable module performs step rotation, and each rotation angle is the same. Point 1 rotates to point 2, and the industrial camera does not move, and then rotates to point 3;

[0032] Process 6: When the product reaches point 3 of the middle turntable, the material picking and placing device starts to work, the horizontal moving slide 82 moves the material picking vertical moving slide 81 to above point 3, the material picking vertical moving slide 81 moves down, the self-spinning suction nozzle sucks the product up, and the cylinder and the self-spinning suction nozzle feedback the results through camera 3, adjust the product position and angle to the required angle, and move the X-axis for a corresponding distance to transplant the product into the aging board fixture;

[0033] Process 7: When the first row of fixtures of the aging board is filled, the fixture device is opened and raised again, the conveying module works, the aging board is moved forward a corresponding distance, the fixture device is opened and pressed down, the sealing cover is pressed, and then it is moved up again after being pressed, and the conveying module continues to work to fill the second row of fixtures;

[0034] Process 8: After the whole aging board is filled, the conveying module moves the aging board to the upper bin. At the same time, the upper bin performs the opposite action of the lower bin to store the aging board after filling. The aging board is manually taken out and placed inside the aging table for aging test;

[0035] The above is the loading process. The whole process is uninterrupted and all mechanisms work simultaneously. The equipment can also perform secondary appearance defect detection, electrical parameter testing and taping and boxing on the aged boards after the aging test. The detection process is as follows:

[0036] Process 1: Put the aging board after aging test into the unloading bin;

[0037] Process 2: Similar to process 3 in the loading process, the aging board is moved to the bottom of the loading and unloading device 8, and the clamp sealing cover is opened;

[0038] Process 3: The picking module moves the product in the aging board fixture to point 3 of the middle turntable;

[0039] Process 4: The middle turntable rotates in the opposite direction at a fixed angle, the product rotates to point 2, and camera 2 starts working to identify appearance defects on the front and back of the product;

[0040] Process 5: Figure 7 As shown, after the appearance defect recognition is completed, it continues to rotate in the opposite direction to the No. 1 position of the middle turntable / No. G position of the detection turntable, and the detection turntable starts to run. The self-rotating suction nozzle on the transfer station No. G of the detection turntable takes the product, and the industrial camera at the No. 1 position of the middle turntable is used to shoot, and the product position and angle are adjusted to the required angle through the controller, and the detection turntable rotates in the opposite direction for a fixed angle to reach the F station. After the aging test is completed, the products that fail the appearance defect detection are placed in the second waste box, and the qualified ones are not moved, and continue to rotate to the No. E station for electrical parameter testing, and the vertical movable slide moves down to perform electrical parameter testing;

[0041] Process 6: After the test is completed, continue to rotate in the opposite direction and arrive at station D. If the electrical parameter test fails, the product is placed in the first waste box. If the electrical parameters are qualified, no action is taken and the product continues to rotate to station C.

[0042] Process 7: After the product arrives at station C, the vertical moving slide moves down and puts the product into the tape braiding machine 10. The tape braiding machine 10 starts to work and tapes and boxes the products that have passed the appearance defect inspection and electrical parameter inspection after the aging test. Similarly, the whole process works uninterruptedly, and each mechanism works at the same time.

[0043] Furthermore, the material taking station A is provided with a platform connected to the bottom of the loading slide rail 2, the appearance inspection station B, the packaging station C, the first waste collection station D, the performance inspection station E, and the second waste station F are respectively provided with an industrial camera 35, a tape braiding device 10, a first waste box 11, an electrical parameter test bench 12, and a second waste box 13, the transfer station G is provided on the edge of the middle turntable 3, and the reserved station H is vacant. By setting up multiple stations, different functions of the product can be inspected or processed. The reserved station H can be equipped with corresponding equipment when needed.

[0044] The function of the tape machine 10 is to tape and pack the products that have passed the aging test and the appearance defect detection and electrical parameter test, that is, the finished products, and then ship them. The automatic turntable module moves in the opposite direction to transfer the products to the tape holes, and the Z-axis moving slide moves downward to the placement point, and the products are accurately placed in the tape points.

[0045] Furthermore, the detection turntable 5 includes a vertically fixed drive motor 51, the shaft of which is mounted at the center of a turntable 55 below the drive motor 51, and eight connecting plates 54 are evenly fixed to the side of the turntable 55. The eight connecting plates 54 extend like a flower and have a vertical movable slide 53 vertically mounted at the end, and a self-rotating suction nozzle 14 is vertically mounted at the lower end of the vertical movable slide 53. The eight self-rotating suction nozzles 14 are precisely driven by the stepping motor to drive the product to each functional position, thereby achieving the purpose of rapid product detection.

[0046] Furthermore, a collection plate 52 is fixed to the upper end of the turntable 55. A through hole is provided in the center of the collection plate 52 and is sleeved on the rotating shaft of the driving motor 51. The driving motor 51 has an integrated cavity. The side walls of the driving motor 51 are evenly processed with air holes and are connected to the self-rotating suction nozzles 14 on different vertical movable slides 53 through air pipes with solenoid valves.

[0047] Furthermore, the middle turntable 3 includes a turntable 34, the center of which is mounted on the rotating shaft of the support platform 33, and the support platform 33 is vertically fixed on the bottom plate 1. The upper edge of the turntable 34 is evenly mounted with four transparent square grooves 32, and an industrial camera 35 is correspondingly mounted on the bottom plate 1 below each transparent square groove 32, wherein two transparent square grooves 32 are respectively arranged directly below the transfer station and the material taking and discharging point of the material taking and discharging device 8, and an industrial camera 35 is relatively mounted directly above one of the transparent square grooves 32 through the camera support plate 31. The industrial camera mainly detects the appearance of the chip and the product angle and position after the self-rotating suction nozzle is adsorbed, to ensure that the product is qualified and the position is correct after entering the lower station. The camera at point 2 is divided into two, upper and lower, and its function is to detect the appearance defects on the front and back of the product after the aging test is completed; the purpose of camera 3 is to identify the product position angle, so as to facilitate the grabbing and adjustment of the picking module.

[0048] Furthermore, the material picking and unloading device 8 includes a vertically movable slide 81 for picking up materials and a horizontal slide 83. The vertically movable slide 81 for picking up materials is vertically installed at the movable end of the horizontal slide 83. The side of the horizontal slide 83 is fixed on the slide mounting plate 82. The two ends of the slide mounting plate 82 are fixedly supported on the base plate 1 through the slide support frame 84. A self-rotating suction nozzle 14 is vertically installed at the lower end of the vertically movable slide 81 for picking up materials. The vertically movable slide 81 for picking up materials is placed near the end of the stroke of the middle turntable 3. The transfer point is directly below the bottom end of the self-rotating suction nozzle 14 on the vertically movable slide 81 for picking up materials.

[0049] Furthermore, the middle belt 7 includes a flat belt 71, which is fixedly supported on the base plate 1 by a belt support column 73 and is perpendicular to the horizontal slide 83. A pressure strip 74 perpendicular to the flat belt 71 is provided above the middle of the flat belt 71. Both ends of the pressure strip 74 are fixed to the protruding ends of two opening cylinders 72. The opening cylinders 72 are fixedly supported on the base plate 1 by pillars.

[0050] Furthermore, the aging loading bin 6 and the aging unloading bin 9 have the same structure, and the aging loading bin 6 and the aging unloading bin 9 are installed relative to each other. The aging loading bin 6 includes a loading belt 61 and a limiting support column 62. The rotating shafts at both ends of the loading belt 61 are respectively located in the middle of four opposite limiting support columns 62. The bottom of the limiting support column 62 is fixed on the bottom plate 1. The upper inner side of the limiting support column 62 is processed with a right-angle groove 622. The outer sides of the two limiting support columns 62 on both sides of the loading belt 61 are respectively connected by a horizontal plate 63. A vertically downward lifting cylinder 64 is installed in the middle of the horizontal plate 63, and a horizontal pushing cylinder 68 is vertically installed at the protruding end of the lifting cylinder 64. The protruding end of the horizontal pushing cylinder 68 is perpendicular to the loading belt 61 and is installed with a lifting plate 67. The inner side of the lifting plate 67 is set to be L-shaped, and its bottom is slightly higher than the end face of the loading belt 61.

[0051] Furthermore, the feeding belt 61 includes a strip belt 611 and a belt shaft 612. Both ends of the two belt shafts 612 are installed in the middle of a limiting support column 62. The two strip belts 611 are parallel to the ends of the two belt shafts 612 that are tensioned. A support plate 65 is provided in the space between the two strip belts 611. The support plate 65 is installed on the protruding shaft of the support cylinder 66, and the support cylinder 66 is fixed on the base plate 1.

[0052] Furthermore, a chamfer 621 is processed on the top of the right-angle groove 622, and the chamfer 621 allows a larger gap between the aging plate and the support column, making it easier for the staff to take out the aging plate.

[0053] Opening device, when the aging board moves to the corresponding position below the picking module through the conveying module, since there is a sealing cover on the aging board fixture, it needs to be opened to achieve the effect of loading the product and the product contacting the fixture, so the design is as follows Figure 4 The opening clamp mechanism shown is composed of two opening cylinders 72 and a metal pressure strip 74. When the two cylinders are pulled down at the same time, the metal strip moves down to press the edge of the clamp sealing cover, and the sealing cover rotates around its hinge axis to open. After the first row of products is loaded, the cylinder rises, and then the conveying module moves the aging board in the Y-axis direction for a corresponding distance. The cylinder is pulled down again for a certain distance to press the sealing cover into place, and then it rises again, the aging board moves forward, and the cylinder is pulled down again to open the clamp. This cycle achieves the effect of loading the product onto the aging board clamp.

Claims

1. A plastic-sealed surface-mount semiconductor discrete device aging feeding device, comprising an intermediate turntable (3) mounted on a bottom plate (1), a vibrating feeding plate (4), a detection turntable (5), an aging feeding bin (6), an intermediate belt (7), a material taking and unloading device (8), and an aging unloading bin (9), characterized in that: The detection turntable (5) and the material discharging device (8) are respectively provided with transfer points connected to the opposite ends of the intermediate turntable (3); the detection turntable (5) is connected to the vibrating material discharging plate (4) through a material discharging slide rail (2) inclined thereto; the intermediate belt (7) is installed below the material discharging device (8); the aging material discharging bin (6) and the aging material discharging bin (9) are respectively connected to the two ends of the intermediate belt (7); and the periphery of the detection turntable (5) is evenly arranged with a material discharging station, an appearance inspection station, a packaging station, a first waste collection station, a performance inspection station, a second waste station, a transfer station, and a reserved station in sequence with the rotation axis of the detection turntable (5) as the center.

2. The aging feeding device for plastic-encapsulated surface mounted semiconductor discrete devices according to claim 1, characterized in that: The material taking station is provided with a platform connected to the bottom of the loading slide rail (2); the appearance inspection station, the packaging station, the first waste collection station, the performance inspection station, and the second waste station are respectively provided with an industrial camera (35), a tape braider (10), a first waste box (11), an electrical parameter test bench (12), and a second waste box (13); the transfer station is arranged on the edge of the middle turntable (3), and the reserved station is left vacant.

3. The aging feeding device for plastic-encapsulated surface mounted semiconductor discrete devices according to claim 1, characterized in that: The detection turntable (5) comprises a vertically fixed drive motor (51), the rotating shaft of the drive motor (51) is mounted at the center of a turntable (55) below the drive motor, eight connecting plates (54) are evenly fixedly connected to the side of the turntable (55), the eight connecting plates (54) extend like a flower and a vertical movable slide (53) is vertically mounted at the end, and a self-rotating suction nozzle (14) is vertically mounted at the lower end of the vertical movable slide (53).

4. The aging feeding device for plastic-encapsulated surface mounted semiconductor discrete devices as claimed in claim 3, characterized in that: A collector plate (52) is also fixed on the upper end of the turntable (55). A through hole is provided at the center of the collector plate (52) and is sleeved on the rotating shaft of the driving motor (51). The driving motor (51) has an integral cavity. Air holes are evenly processed on the side wall of the driving motor (51) and are respectively connected to the self-rotating suction nozzles (14) on different vertical movable slides (53) through air pipes with electromagnetic valves.

5. The aging feeding device for plastic-encapsulated surface mounted discrete semiconductor devices according to claim 1, characterized in that: The intermediate turntable (3) comprises a turntable (34), the center of which is mounted on the rotating shaft of a support platform (33), the support platform (33) being vertically fixed on the bottom plate (1), and four transparent square grooves (32) are evenly mounted on the edge of the upper end surface of the turntable (34), and an industrial camera (35) is correspondingly mounted on the bottom plate (1) below each transparent square groove (32), wherein two transparent square grooves (32) are respectively arranged directly below the transfer station and the material taking and putting point of the material taking and putting device (8), and an industrial camera (35) is also relatively mounted directly above one of the transparent square grooves (32) through a camera support plate (31).

6. The aging feeding device for plastic-encapsulated surface mounted semiconductor discrete devices according to claim 1, characterized in that: The material picking and placing device (8) comprises a material picking vertical movable slide (81) and a horizontal slide (83). The material picking vertical movable slide (81) is vertically mounted on the movable end of the horizontal slide (83). The side of the horizontal slide (83) is fixed on a slide mounting plate (82). Both ends of the slide mounting plate (82) are fixedly supported on the bottom plate (1) through a slide support frame (84). A self-rotating suction nozzle (14) is vertically mounted on the lower end of the material picking vertical movable slide (81). The material picking vertical movable slide (81) is placed near the end of the travel of the middle turntable (3). The transfer point is located directly below the bottom end of the self-rotating suction nozzle (14) on the material picking vertical movable slide (81).

7. The aging feeding device for plastic-encapsulated surface mounted discrete semiconductor devices according to claim 1, characterized in that: The intermediate belt (7) comprises a flat belt (71), which is fixedly supported on the bottom plate (1) via a belt support column (73) and is perpendicular to the horizontal slide (83), a pressure strip (74) perpendicular to the flat belt (71) is provided above the middle of the flat belt (71), the two ends of the pressure strip (74) are fixed to the protruding ends of two cover opening cylinders (72), and the cover opening cylinders (72) are fixedly supported on the bottom plate (1) via pillars.

8. The aging feeding device for plastic-encapsulated surface mounted semiconductor discrete devices according to claim 1, characterized in that: The aging loading bin (6) and the aging unloading bin (9) have the same structure. The aging loading bin (6) and the aging unloading bin (9) are installed relative to each other. The aging loading bin (6) comprises a loading belt (61) and a limiting support column (62). The rotating shafts at both ends of the loading belt (61) are respectively connected to the middle of four relative limiting support columns (62). The bottom of the limiting support column (62) is fixed on the bottom plate (1). The inner side of the upper part of the limiting support column (62) is processed with a right-angle groove (622). The outer sides of the two limiting support columns (62) on both sides of the belt (61) are connected by a horizontal plate (63) respectively. A lifting cylinder (64) is installed vertically downward in the middle of the horizontal plate (63). A horizontal push cylinder (68) is vertically installed at the protruding end of the lifting cylinder (64). The protruding end of the horizontal push cylinder (68) is perpendicular to the feeding belt (61) and is installed with a lifting plate (67). The inner side of the lifting plate (67) is set to be L-shaped, and its bottom is slightly higher than the end surface of the feeding belt (61).

9. The aging feeding device for plastic-encapsulated surface mounted discrete semiconductor devices as claimed in claim 8, characterized in that: The feeding belt (61) comprises a strip belt (611) and a belt shaft (612), both ends of the two belt shafts (612) are mounted on the middle of a position-limiting support column (62), the two strip belts (611) are parallel to the two ends of the tensioned belt shafts (612), a support plate (65) is provided in the space between the two strip belts (611), the support plate (65) is mounted on the protruding shaft of a support cylinder (66), and the support cylinder (66) is fixed on the bottom plate (1).

10. The aging and feeding device for plastic-encapsulated surface mounted discrete semiconductor devices according to claim 9, characterized in that: The top of the right-angle groove (622) is processed with a chamfer (621).

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