Semiconductor lead frame detection device

Abstract

The invention discloses a semiconductor lead frame detection device, which belongs to the technical field of semiconductor lead frame detection and comprises a main body, a first detection area, a second detection area and a discharging area are arranged in the main body, a connecting cross rod is fixedly mounted in the first detection area, and a feeding box is slidably connected to the outer side of the connecting cross rod. A first screw is rotationally connected into the connecting cross rod, a first moving block is connected to the outer side of the first screw through threads, a pressing plate is fixedly mounted at the top end of the first moving block, a second screw is rotationally connected into the feeding box, a second moving block is connected to the outer side of the second screw through threads, and a lifting plate is fixedly mounted on one side of the second moving block. A plurality of lifting grooves are formed in the feeding box, positioning rods and pressure sensing devices are installed in the lifting grooves, limiting plates are connected to the outer sides of the positioning rods, and a first detector is arranged on the inner wall of the first detection area. According to the invention, detection work can be carried out on lead frames of various models, the detection efficiency and accuracy are greatly enhanced, and the practicability is very high.

Description

Technical Field

[0001] The present invention relates to the technical field of linear modules, and in particular to a semiconductor lead frame detection device. Background Art

[0002] The semiconductor lead frame refers to a thin metal frame used to connect the contact points of the internal chip of the semiconductor integrated block and the external wires. It is a major structural material for semiconductor packaging and accounts for 15% of the semiconductor packaging material market. The lead frame is mainly composed of two parts: chip pads and pins. As the chip carrier of the integrated circuit, it is a key structural component that uses bonding materials (gold wire, aluminum wire, copper wire) to make the internal circuit lead end (bonding point) of the chip electrically connected to the external lead through the inner lead to form an electrical circuit. It acts as a bridge to connect with the external wires. The semiconductor lead frame needs to be tested before application. Most of the existing detection methods use manual detection, which is inefficient and has certain limitations. Therefore, it is necessary to design a semiconductor lead frame detection device to solve this problem. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a semiconductor lead frame detection device, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a semiconductor lead frame detection device, comprising a main body, wherein a first detection area, a second detection area and a discharging area are arranged in the main body, a connecting cross bar is fixedly installed in the first detection area, and a loading box is slidably connected to the outer side of the connecting cross bar, a first screw is rotatably connected in the connecting cross bar, and a first moving block is threadedly connected to the outer side of the first screw, a pressing plate is fixedly installed on the top of the first moving block, a second screw is rotatably connected in the loading box, and a second moving block is threadedly connected to the outer side of the second screw, a lifting plate is fixedly installed on one side of the second moving block, and the lifting plate is slidably connected to the loading box, a plurality of lifting slots are opened in the loading box, and a positioning rod and a pressure sensing device are fixedly installed in the lifting slot, a limiting plate is slidably connected to the outer side of the positioning rod, and a compression spring is connected between the limiting plate and the lifting slot, a plurality of driving wheels are rotatably connected to the top and bottom of the first detection area, and a first detector is arranged on the inner wall of the first detection area; A cover plate is placed on the top of the second detection area, a plurality of first support rollers and a second support roller are rotatably connected in the second detection area, and a first conveying assembly and a second conveying assembly are arranged in the cover plate, a lever and a second detector are arranged on one side of the first support roller and the second support roller in the second detection area, a third screw is rotatably connected in the second detection area, and a touch sensing member is connected to the outer side of the third screw by a thread, and the top of the touch sensing member is connected to the lever; The two sides of the discharging area are respectively connected with the finished product area and the defective product area, and a dividing plate is rotatably connected in the discharging area. A push rod motor is arranged in the discharging area, and the top end of the push rod motor is connected with the bottom end of the dividing plate.

[0005] As a preferred technical solution of the present invention, there are several connecting cross bars, and a T-shaped structure design is adopted, which can limit the loading box and prevent it from detaching. The connecting cross bar and the lifting plate adopt a cross structure design, which can stably support lead frames of different models.

[0006] As a preferred technical solution of the present invention, a discharge port is provided in the first detection area and connected to the second detection area. The top of the limiting plate is flush with the discharge port, which enables the lead frame to move stably. The limiting plates are distributed in an array and can limit lead frames of different models.

[0007] As a preferred technical solution of the present invention, snap-ons are fixedly installed on both sides of the cover plate, and buckles compatible with the snap-ons are connected and installed on both sides of the second detection area, which facilitates the disassembly and assembly of the cover plate, thereby facilitating the debugging and maintenance of the internal components.

[0008] As a preferred technical solution of the present invention, the first support roller and the second support roller, the first conveying assembly and the second conveying assembly all adopt a staggered design, and the first support roller and the first conveying assembly, the second support roller and the second conveying assembly correspond to each other, and the lead frame can be clamped and controlled to move through a two-stage design, thereby completing the detection.

[0009] As a preferred technical solution of the present invention, the first conveying assembly and the second conveying assembly both include rollers, there are two rollers, and they are rotatably connected to the cover plate, a conveyor belt is connected between the rollers, and a motor is connected to one side of one of the rollers. The conveyor belt is controlled to move by the motor, thereby driving the lead frame to move.

[0010] As a preferred technical solution of the present invention, the first screw, the second screw and the third screw are all electric screws with motors, which are used to control the movement of the pressing plate, the lifting plate and the lever, thereby adjusting the position and height, and dustproof pads are provided on one side of the first screw, the second screw and the third screw to play a protective role.

[0011] As a preferred technical solution of the present invention, buffer pads are provided in the finished product area and the defective product area to protect the lead frame, and grooves are provided to facilitate the removal of the lead frame. Discharge ports are provided on both sides of the discharge area. The discharge ports are inclined and connected to the finished product area and the defective product area to facilitate the discharge of the lead frame along the dividing plate.

[0012] As a preferred technical solution of the present invention, there are four groups of push rod motors, which are symmetrically distributed. The height difference is changed by lifting and lowering, so that the dividing plate is tilted. The top of the push rod motor adopts an arc structure design, and a torsion spring is connected between the dividing plate and the discharge area to facilitate the resetting of the dividing plate.

[0013] Beneficial effects of the present invention: The lifting plate is controlled by the second screw rod, and the flatness and burrs of the lead frame can be inspected from the side by cooperating with the first detector. The appearance of the lead frame can also be inspected by the first supporting roller, the second supporting roller, the first conveying assembly and the second conveying assembly in cooperation with the second detector. At the same time, the position of the positioning hole of the lead frame can be confirmed by the lever, so as to judge whether the lead frame is formed completely. The whole process is automatic without manual inspection, which greatly improves the inspection efficiency and accuracy. A plurality of limit plates are provided, and the first screw controls the movement of the pressure plate to position and confirm lead frames of different models to prevent their positions from being offset. At the same time, the third screw can be used to control the position of the lever to make it correspond to the position of the positioning hole in the lead frames of different models, so as to perform detection work; A finished product area and a defective product area are set up, and the unloading work is completed through a dividing plate. The first detector, the lever and the second detector are used to detect whether it is a defective product, and the push rod motor is used to control the tilt of the dividing plate to distinguish between defective products and finished products, which is convenient for subsequent repair work. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the 3D structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 is a side view of the first detection area in the present invention; Figure 4 is a top view of the first detection area in the present invention; Figure 5 is a top view of the second detection area in the present invention; Figure 6 It is a schematic diagram of the side structure of the second detection area in the present invention; Figure 7 It is a top view of the structure of the second detection area in the present invention; Figure 8 It is a schematic diagram of the internal structure of the discharging area in the present invention.

[0015] In the figure: 1. main body; 2. first detection area; 3. second detection area; 4. discharge area; 5. connecting cross bar; 6. loading box; 7. first screw; 8. first moving block; 9. pressure plate; 10. second screw; 11. second moving block; 12. lifting plate; 13. positioning rod; 14. pressure sensing device; 15. limit plate; 16. compression spring; 17. driving wheel; 18. first detector; 19. cover plate; 20. first support roller; 21. second support roller; 22. first conveying assembly; 23. second conveying assembly; 24. lever; 25. second detector; 26. third screw; 27. touch sensor; 28. finished product area; 29. ​​defective area; 30. dividing plate; 31. push rod motor. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0017] See also Figure 1 - Figure 8A semiconductor lead frame detection device comprises a main body 1, wherein a first detection area 2, a second detection area 3 and a discharging area 4 are arranged in the main body 1, a connecting cross bar 5 is fixedly installed in the first detection area 2, and a loading box 6 is slidably connected to the outer side of the connecting cross bar 5, a first screw 7 is rotatably connected in the connecting cross bar 5, and a first moving block 8 is threadedly connected to the outer side of the first screw 7, a pressing plate 9 is fixedly installed on the top of the first moving block 8, a second screw 10 is rotatably connected in the loading box 6, and a second moving block 11 is threadedly connected to the outer side of the second screw 10, and a lifting plate 12 is fixedly installed on one side of the second moving block 11, a plurality of connecting cross bars 5 are provided, and a T-shaped structure design is adopted, which can lift the loading box 6 To achieve the limiting effect and prevent separation, the connecting cross bar 5 and the lifting plate 12 adopt a cross-structure design, which can stably support lead frames of different models, and the lifting plate 12 is slidably connected to the loading box 6. A number of lifting slots are opened in the loading box 6, and a positioning rod 13 and a pressure sensing device 14 are fixedly installed in the lifting slot. The outer side of the positioning rod 13 is slidably connected to the limiting plate 15, a discharge port is opened in the first detection area 2, and is connected to the second detection area 3. The top of the limiting plate 15 is flush with the discharge port, which can make the lead frame move stably, and the limiting plate 15 is distributed in an array, which can limit lead frames of different models, and a compression spring 16 is connected between the limiting plate 15 and the lifting slot.The top and bottom of the first detection area 2 are rotatably connected to a plurality of driving wheels 17, and the inner wall of the first detection area 2 is provided with a first detector 18, a cover plate 19 is placed on the top of the second detection area 3, and snap locks are fixedly installed on both sides of the cover plate 19, and buckles adapted to the snap locks are connected and installed on both sides of the second detection area 3, which is convenient for disassembly and assembly of the cover plate 19, thereby facilitating the debugging and maintenance of the internal components, a plurality of first support rollers 20 and second support rollers 21 are rotatably connected in the second detection area 3, and a first conveying assembly 22 and a second conveying assembly 23 are provided in the cover plate 19, the first support rollers 20 and the second support rollers 21, the first conveying assembly 22 and the second conveying assembly 23 ... The components 23 are all staggered in design, and the first support roller 20 and the first conveying component 22, the second support roller 21 and the second conveying component 23 correspond to each other, and the lead frame can be clamped and controlled to move through a two-stage design, so as to complete the detection. The first conveying component 22 and the second conveying component 23 both include rollers, and there are two rollers, which are rotatably connected to the cover plate 19. A conveyor belt is connected between the rollers, and a motor is connected to one side of one of the rollers. The conveyor belt is controlled to move by the motor, so that the lead frame can be driven to move. A lever 24 and a second detection lever 24 are provided on one side of the first support roller 20 and the second support roller 21 in the second detection area 3. The third screw rod 26 is rotatably connected in the second detection area 3, and the first screw rod 7, the second screw rod 10 and the third screw rod 26 are all electric screw rods with motors, which are used to control the movement of the pressing plate 9, the lifting plate 12 and the lever 24, so as to adjust the position and height. The first screw rod 7, the second screw rod 10 and the third screw rod 26 are all provided with dustproof pads on one side to play a protective role, and the outer side of the third screw rod 26 is connected with a touch sensor 27 through a thread, and the top of the touch sensor 27 is connected to the lever 24. The finished product area 28 and the defective product area 29 are respectively connected on both sides of the discharging area 4, and a dividing plate 30 is rotatably connected in the discharging area 4, and a push rod electric Machine 31, and the top of the push rod motor 31 is connected to the bottom of the dividing plate 30, buffer pads are provided in the finished product area 28 and the defective area 29 to protect the lead frame, and grooves are provided to facilitate the taking of the lead frame, and discharge ports are provided on both sides of the discharge area 4. The discharge ports are inclined and connected to the finished product area 28 and the defective area 29 to facilitate the discharge of the lead frame along the dividing plate 30. There are four groups of push rod motors 31, and they are symmetrically distributed. The height difference is changed by lifting and lowering, so that the dividing plate 30 is tilted. The top of the push rod motor 31 is designed with an arc structure, and a torsion spring is connected between the dividing plate 30 and the discharge area 4 to facilitate the resetting of the dividing plate 30.

[0018] Working principle: When in use, the loading box 6 needs to be pulled out, and then the stacked lead frame is placed in the loading box 6 and placed on the limit plate 15. At this time, the limit plate 15 in contact with the lead frame is affected by gravity and drops down and contacts the pressure sensing device 14. The pressure sensing device 14 determines the length of the lead frame by the number and position of the dropped limit plates 15. Then the loading box 6 is inserted into the first detection area 2, and the first screw 7 is opened to control the movement of the pressure plate 9 so that it is connected with the lead frame. At the same time, the other side of the lead frame is connected with the inner wall of the loading box 6, thereby confirming that the lead frame is in contact with the lead frame. The width of the lead frame is determined, and the model of the lead frame is confirmed according to the length and width. Then, the third screw 26 is opened, and the lever 24 is controlled to move to a position corresponding to the lead frame positioning hole, and the detection work can be started. First, the second screw 10 is opened, and the lifting plate 12 is used to control the lead frame to rise, so that it passes through the first detector 18 in sequence. The flatness and burrs of the lead frame are confirmed by the gap between the stacked lead frames. After the lead frame rises to the top and contacts the driving wheel 17, the driving wheel 17 is rotated to control the lead frame at the top. The lead frame moves toward the second inspection area 3 and is connected to the first support roller 20 and the first conveying assembly 22. The lead frame below is blocked by the limiting plate 15 and cannot move. After entering the second inspection area 3, the lead frame is affected by the first support roller 20 and the first conveying assembly 22 and continues to move. Then, it passes through the second detector 25 and the lever 24. The second detector 25 detects one side of the lead frame, and the appearance of one side of the lead frame is confirmed by the position of each component inside the lead frame, and the lever 24 is used to check the position of the positioning hole on one side of the lead frame. To confirm, when the lever 24 contacts the lead frame, it will tilt and touch the sensing element 27 until a positioning hole appears and it will return to its original position, thereby judging the position of the positioning hole until the lead frame is connected to the second support roller 21 and the second conveying assembly 23. The other side of the lead frame is then inspected. After the inspection is completed, the data is used to determine whether it is a defective product, and the push rod motor 31 is used to lift and control the dividing plate 30 to tilt. After the lead frame is sent into the discharge area 4, it will slide along the dividing plate 30 into the finished product area 28 or the defective area 29 to complete the unloading work.

[0019] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semiconductor lead frame detection device, comprising a main body (1), characterized in that: The main body (1) is provided with a first detection area (2), a second detection area (3) and a discharge area (4); a connecting cross bar (5) is fixedly installed in the first detection area (2), and a feeding box (6) is slidably connected to the outer side of the connecting cross bar (5); a first screw (7) is rotatably connected in the connecting cross bar (5), and a first moving block (8) is connected to the outer side of the first screw (7) via a thread; a pressing plate (9) is fixedly installed at the top of the first moving block (8); a second screw (10) is rotatably connected in the feeding box (6), and the outer side of the second screw (10) is connected to the second moving block (1) via a thread. 1), a lifting plate (12) is fixedly installed on one side of the second moving block (11), and the lifting plate (12) is slidably connected to the loading box (6), a plurality of lifting slots are opened in the loading box (6), and a positioning rod (13) and a pressure sensing device (14) are fixedly installed in the lifting slots, the outer side of the positioning rod (13) is slidably connected to a limit plate (15), and a compression spring (16) is connected between the limit plate (15) and the lifting slot, the top and bottom of the first detection area (2) are rotatably connected to a plurality of driving wheels (17), and a first detector (18) is provided on the inner wall of the first detection area (2); A cover plate (19) is placed on the top of the second detection area (3); a plurality of first support rollers (20) and second support rollers (21) are rotatably connected in the second detection area (3); a first conveying assembly (22) and a second conveying assembly (23) are arranged in the cover plate (19); a lever (24) and a second detector (25) are arranged on one side of the first support roller (20) and the second support roller (21) in the second detection area (3); a third screw rod (26) is rotatably connected in the second detection area (3); and a touch sensing component (27) is connected to the outer side of the third screw rod (26) via a thread; the top end of the touch sensing component (27) is connected to the lever rod (24); The two sides of the discharging area (4) are respectively connected to the finished product area (28) and the defective product area (29), and a material dividing plate (30) is rotatably connected in the discharging area (4). A push rod motor (31) is arranged in the discharging area (4), and the top end of the push rod motor (31) is connected to the bottom end of the material dividing plate (30).

2. A semiconductor lead frame detection device according to claim 1, characterized in that: There are a plurality of connecting cross bars (5) which adopt a T-shaped structural design, and the connecting cross bars (5) and the lifting plate (12) adopt a cross-shaped structural design.

3. The semiconductor lead frame detection device according to claim 1, characterized in that: A discharge port is provided in the first detection area (2) and is connected to the second detection area (3); the top of the limit plate (15) is flush with the discharge port, and the limit plates (15) are arranged in an array.

4. The semiconductor lead frame detection device according to claim 1, characterized in that: The cover plate (19) is fixedly provided with snap-ons on both sides, and buckles matching the snap-ons are connected and installed on both sides of the second detection area (3).

5. The semiconductor lead frame detection device according to claim 1, characterized in that: The first support roller (20) and the second support roller (21), the first conveying assembly (22) and the second conveying assembly (23) all adopt a staggered design, and the first support roller (20) and the first conveying assembly (22), and the second support roller (21) and the second conveying assembly (23) correspond to each other.

6. The semiconductor lead frame detection device according to claim 1, characterized in that: The first conveying assembly (22) and the second conveying assembly (23) both comprise rollers, two of which are rotatably connected to the cover plate (19), a conveyor belt is connected between the rollers, and a motor is connected to one side of one of the rollers.

7. The semiconductor lead frame detection device according to claim 1, characterized in that: The first screw rod (7), the second screw rod (10) and the third screw rod (26) are all electric screw rods with motors, and dustproof pads are provided on one side of the first screw rod (7), the second screw rod (10) and the third screw rod (26).

8. The semiconductor lead frame detection device according to claim 1, characterized in that: The finished product area (28) and the defective product area (29) are both provided with cushion pads and grooves, and the discharge area (4) is provided with discharge ports on both sides. The discharge ports are designed to be inclined and connected to the finished product area (28) and the defective product area (29).

9. The semiconductor lead frame detection device according to claim 1, characterized in that: There are four groups of push rod motors (31) which are symmetrically distributed. The top of the push rod motor (31) adopts an arc-shaped structure design. A torsion spring is connected between the material dividing plate (30) and the material discharging area (4).

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