Leadframe transfer stacking apparatus

Abstract

The utility model provides a kind of lead frame transfer stacking device, it is related to lead frame technical field, the lead frame transfer stacking device, including frame body, the both sides inner wall of frame body is provided with conveyor belt one, and the movable part of two the conveyor belt one is fixedly connected with multiple mounting plates, L slot is opened in the top of mounting plate, and L slot inner wall is rotatably connected with discharging plate, the side wall of discharging plate and the bottom wall inside L slot are contacted, and multiple first springs are fixedly arranged between the other side of discharging plate and L slot side wall, the top wall of frame body is provided with conveyor belt two, and the movable part of conveyor belt two is fixedly connected with multiple pusher plates, and the side of frame body is provided with transmission;The lead frame transfer stacking device is set by conveyor belt one and discharging plate, so it can be completed the stacking of transfer frame without turning over, and the lead frame placed on stacked transfer frame, so improve the convenience and stacking efficiency of lead frame transfer stacking.

Description

Technical Field

[0001] This utility model relates to a lead frame transfer and stacking device, specifically a lead frame transfer and stacking device, belonging to the field of lead frame technology. Background Technology

[0002] As a chip carrier for integrated circuits, the lead frame is a key structural component that uses composite materials (gold wire, aluminum wire, copper wire) to achieve electrical connection between the internal circuit leads of the chip and the external leads, forming an electrical circuit. It acts as a bridge connecting to external wires. Most semiconductor integrated circuits require the use of lead frames, which are an important basic material in the electronics and information industry.

[0003] In the prior art, patent publication number CN120545223A discloses a lead frame transfer and stacking device, which relates to the semiconductor manufacturing field. The device includes: a support frame with support rings at both ends in the length direction; and a flipping mechanism, which includes two gear rings that are rotatably mounted on the inner side of the support rings, and two symmetrically arranged bearing plates with their length direction parallel to the length direction of the support frame are provided between the gear rings.

[0004] While existing lead frame transfer and stacking devices can automate the stacking of lead frames, they still have some shortcomings in practical operation. For example, during the flipping process of the transfer frame, the lead frames are prone to deflection due to uneven gravity distribution, causing them to become stuck in the transfer frame and unable to fall properly, requiring manual adjustment and reducing operational efficiency. Furthermore, during the descent, the lead frames tend to scatter randomly due to air resistance, requiring manual rearrangement into the material box, further impacting production efficiency. Summary of the Invention

[0005] (a) Technical problems to be solved The purpose of this invention is to provide a lead frame transfer and stacking device to solve the above-mentioned problems, thereby addressing the issue of low working efficiency in existing lead frame transfer and stacking devices.

[0006] (II) Technical Solution This utility model is achieved through the following technical solution: a lead frame transfer and stacking device, including a frame, on both inner walls of the frame, a conveyor belt is provided, and multiple mounting plates are fixedly connected to the movable parts of the two conveyor belts. An L-groove is opened at the top of the mounting plate, and a feeding plate is rotatably connected to the inner wall of the L-groove. The side wall of the feeding plate contacts the bottom wall inside the L-groove, and multiple first springs are fixedly provided between the other side of the feeding plate and the side wall of the L-groove. A second conveyor belt is provided on the top wall inside the frame, and multiple pusher plates are fixedly connected to the movable parts of the second conveyor belt. A transmission belt is provided on one side of the frame.

[0007] Preferably, mounting grooves are formed on both inner walls of the frame. The first conveyor belt includes two conveyor rollers rotatably connected to the inner wall of the mounting groove. A belt is driven between the two conveyor rollers. Two synchronous pulleys are fixedly sleeved on the outer side of the conveyor rollers. A first synchronous belt is driven between the upper and lower sets of synchronous pulleys. The two sets of first synchronous belts are respectively fixedly connected to both sides of the belt. An inner abutment plate is fixedly connected to the inner wall of the mounting groove. The belt and the first synchronous belt are both sleeved on the outer side of the first inner abutment plate.

[0008] Preferably, the second conveyor belt includes two synchronous rollers rotatably connected to the inner wall of the mounting groove, a second synchronous belt is driven between the two synchronous rollers, an inner abutment plate is fixedly connected to the inner wall of the mounting groove, the second synchronous belt is sleeved on the outer side of the inner abutment plate, and the pusher plate is fixedly connected to the outer wall of the second synchronous belt.

[0009] Preferably, distance sensors are installed on the inner walls of both sides of the frame, and a controller and two servo motors are installed on one side of the frame. The movable shafts of the two servo motors are fixedly connected to one end of the conveyor roller and one end of the synchronous roller, respectively.

[0010] Preferably, the frame is provided with two annular track rods in the mounting groove, and the annular track rods are fixedly connected to the inner wall of the mounting groove with connecting rods that are distributed at equal intervals. The end of the mounting plate is located between the outer wall of the conveyor belt and the inner wall of the annular track rods.

[0011] Preferably, a transfer frame is placed between the two sets of conveyor belts, and support legs are fixedly connected to the four corners of the bottom of the transfer frame. Support grooves are provided on the top of the transfer frame at the corresponding positions of each support leg.

[0012] Preferably, the top of the transfer frame has two limiting grooves, one side of which is formed with a linear array of placement grooves. A limiting plate is fixedly connected to the inner wall of the placement groove away from the limiting groove. A limiting rod is slidably connected in the limiting groove. A second spring is fixedly connected between the limiting rod and the inner wall of the limiting groove, and the second spring is located on the side of the limiting rod away from the limiting plate.

[0013] Preferably, a connecting roller is rotatably connected to one side of the frame, and bevel gears are fixedly connected to both ends of the connecting roller and one end of the two conveying rollers. The two bevel gears located at one end of the connecting roller mesh with each other.

[0014] This utility model provides a lead frame transfer and stacking device, which has the following beneficial effects: 1. The lead frame transfer and stacking device, by setting a conveyor belt and a feeding plate, can complete the stacking of the transfer frame and the lead frame placed on the stacked transfer frame without flipping, thus improving the convenience and stacking efficiency of lead frame transfer and stacking.

[0015] 2. This lead frame transfer and stacking device, through the cooperation of a conveyor belt and a feeding plate, allows lead frames to be automatically transferred from the production line to the stacking area, reducing manual intervention and improving operational convenience and efficiency. The design of the feeding plate and transfer frame ensures the stability of the lead frames during transfer and stacking, avoiding collisions and drops, and improving the neatness and reliability of the stacking. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the entire utility model; Figure 3 This is a frontal perspective three-dimensional schematic diagram of the frame of this utility model; Figure 4 This is a side perspective three-dimensional schematic diagram of the frame of this utility model; Figure 5 This is a three-dimensional schematic diagram of the transfer frame of this utility model.

[0017] [Explanation of Key Component Symbols] 1. Frame; 2. Conveyor Belt 1; 21. Conveyor Roller; 22. Belt; 23. Synchronous Belt 1; 24. Synchronous Pulley; 25. Inner Support Plate 1; 3. Mounting Plate; 4. Feeding Plate; 5. Conveyor Belt 2; 51. Synchronous Roller; 52. Synchronous Belt 2; 53. Inner Support Plate 2; 6. Pushing Plate; 7. Conveyor Belt; 8. Distance Sensor; 9. Controller; 10. Servo Motor; 11. Circular Track Rod; 12. Transfer Frame; 13. Support Leg Rod; 14. Support Groove; 15. Limiting Plate; 16. Limiting Rod; 17. Connecting Roller; 18. Bevel Gear; 19. Limiting Groove; 20. Placement Groove. Detailed Implementation

[0018] This utility model provides a lead frame transfer and stacking device.

[0019] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The system includes a frame 1, with conveyor belts 2 installed on both inner walls of the frame 1. Multiple mounting plates 3 are fixedly connected to the movable parts of the two conveyor belts 2. An L-groove is opened on the top of the mounting plate 3. A feeding plate 4 is rotatably connected to the inner wall of the L-groove. The side wall of the feeding plate 4 contacts the bottom wall inside the L-groove. Multiple first springs are fixedly installed between the other side of the feeding plate 4 and the side wall of the L-groove. A second conveyor belt 5 is installed on the top wall inside the frame 1. Multiple pusher plates 6 are fixedly connected to the movable part of the second conveyor belt 5. A transmission belt 7 is installed on one side of the frame 1.

[0020] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The frame 1 has mounting grooves formed on both inner walls. The conveyor belt 2 includes two conveyor rollers 21 rotatably connected to the inner wall of the mounting groove. A belt 22 is connected between the two conveyor rollers 21. Two synchronous pulleys 24 are fixedly sleeved on the outer side of the conveyor rollers 21. A synchronous belt 23 is connected between the upper and lower sets of synchronous pulleys 24. The two sets of synchronous belts 23 are fixedly connected to both sides of the belt 22. An inner abutment plate 25 is fixedly connected to the inner wall of the mounting groove. The belt 22 and the synchronous belt 23 are both sleeved on the outer side of the inner abutment plate 25.

[0021] Please see Figure 4 The second conveyor belt 5 includes two synchronous rollers 51 rotatably connected to the inner wall of the mounting groove, and a second synchronous belt 52 is driven between the two synchronous rollers 51. An inner abutment plate 53 is fixedly connected to the inner wall of the mounting groove, and the second synchronous belt 52 is sleeved on the outer side of the inner abutment plate 53. A pusher plate 6 is fixedly connected to the outer wall of the second synchronous belt 52.

[0022] Please see Figure 1 , Figure 2 and Figure 3 Distance sensors 8 are installed on the inner walls of both sides of the frame 1. A controller 9 and two servo motors 10 are installed on one side of the frame 1. The movable shafts of the two servo motors 10 are fixedly connected to one end of the conveyor roller 21 and one end of the synchronous roller 51, respectively. Specifically, the controller 9 is electrically connected to the power supply, and the servo motor 10 and the distance sensor 8 are both electrically connected to the controller 9. The models of the controller 9, servo motor 10 and distance sensor 8 are not limited, but are subject to the compatible equipment. The controller 9, servo motor 10, conveyor belt 7 and distance sensor 8 are all existing technology equipment, and their usage, installation and connection methods are all existing technology means, which will not be described in detail in this application.

[0023] Please see Figure 1 , Figure 2 and Figure 3The frame 1 is located in the mounting groove and is equipped with two annular track rods 11. The annular track rods 11 are fixedly connected to the inner wall of the mounting groove with connecting rods that are distributed at equal intervals. The end of the mounting plate 3 is located between the outer wall of the conveyor belt 2 and the inner wall of the annular track rods 11.

[0024] Please see Figure 3 and Figure 5 A transfer frame 12 is placed between the two sets of conveyor belts 12. Support legs 13 are fixedly connected to the four corners of the bottom of the transfer frame 12. Support grooves 14 are provided on the top of the transfer frame 12 and at the corresponding positions of each support leg 13.

[0025] Please see Figure 5 The top of the transfer frame 12 has two limiting grooves 19. A linear array of placement grooves 20 is formed on one side of the limiting groove 19. A limiting plate 15 is fixedly connected to the inner wall of the placement groove 20 away from the limiting groove 19. A limiting rod 16 is slidably connected in the limiting groove 19. A second spring with a linear array is fixedly connected between the limiting rod 16 and the inner wall of the limiting groove 19. The second spring is located on the side of the limiting rod 16 away from the limiting plate 15.

[0026] Please see Figure 2 A connecting roller 17 is rotatably connected to one side of the frame 1. Both ends of the connecting roller 17 and one end of the two conveying rollers 21 are fixedly connected to bevel gears 18. The two bevel gears 18 located at one end of the connecting roller 17 are meshed with each other.

[0027] Working principle: The lead frame is placed in the placement slot 20 on the transfer frame 12, and the two ends of the lead frame are limited by the limiting rod 16 and the limiting plate 15, so that the lead frame is stably placed in the placement slot 20 and will not slide out on its own; the transfer frame 12 with the lead frame is placed on the conveyor belt 7 for transportation, so that the transfer frame 12 moves to one end of the frame 1. At this time, by rotating the synchronous roller 51, the inner abutment plate 53 on the synchronous belt 2 52 is used to push the transfer frame 12 to move between the two conveyor belts 2. At this time, the transfer frame 12 rests on the upper part of the two feeding plates 4 in the same row. By rotating the conveyor roller 21, the conveyor roller 21 drives the belt 22 and the timing belt 23 to rotate via the timing wheel 24. The belt 22 drives the transfer frame 12 on the feeding plate 4 to move downward, thereby completing the stacking. During the stacking process, the already stacked transfer racks 12 cause the discharge plate 4 to rotate upwards and compress the first spring, thereby preventing the discharge plate 4 and the transfer racks 12 from obstructing each other. Distance sensor 8 monitors the position of the lead frame in real time, and controller 9 controls the start and stop of servo motor 10 and the running speed of conveyor belt 2 and conveyor belt 5 according to the monitoring data to ensure the accuracy and stability of the feeding process.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lead frame transfer and stacking device, comprising a frame (1), characterized in that: Conveyor belt 1 (2) is provided on both inner walls of the frame (1). Multiple mounting plates (3) are fixedly connected to the movable parts of the two conveyor belts 1 (2). An L-groove is opened on the top of the mounting plate (3). A feeding plate (4) is rotatably connected to the inner wall of the L-groove. The side wall of the feeding plate (4) is in contact with the bottom wall inside the L-groove. Multiple first springs are fixedly provided between the other side of the feeding plate (4) and the side wall of the L-groove. A conveyor belt 2 (5) is provided on the top wall inside the frame (1). Multiple pusher plates (6) are fixedly connected to the movable part of the conveyor belt 2 (5). A conveyor belt (7) is provided on one side of the frame (1).

2. The lead frame transfer and stacking device according to claim 1, characterized in that: The frame (1) has mounting grooves formed on both sides of its inner wall. The first conveyor belt (2) includes two conveyor rollers (21) rotatably connected to the inner wall of the mounting groove. A belt (22) is connected between the two conveyor rollers (21). Two synchronous pulleys (24) are fixedly sleeved on the outer side of the conveyor rollers (21). A synchronous belt (23) is connected between the upper and lower sets of synchronous pulleys (24). The two sets of synchronous belts (23) are fixedly connected to both sides of the belt (22). An inner abutment plate (25) is fixedly connected to the inner wall of the mounting groove. The belt (22) and the synchronous belt (23) are both sleeved on the outer side of the inner abutment plate (25).

3. The lead frame transfer and stacking device according to claim 1, characterized in that: The second conveyor belt (5) includes two synchronous rollers (51) rotatably connected to the inner wall of the mounting groove. The two synchronous rollers (51) are connected by a second synchronous belt (52). An inner abutment plate (53) is fixedly connected to the inner wall of the mounting groove. The second synchronous belt (52) is sleeved on the outer side of the inner abutment plate (53). The pusher plate (6) is fixedly connected to the outer wall of the second synchronous belt (52).

4. The lead frame transfer and stacking device according to claim 1, characterized in that: Distance sensors (8) are installed on both inner walls of the frame (1). A controller (9) and two servo motors (10) are installed on one side of the frame (1). The movable shafts of the two servo motors (10) are fixedly connected to one end of the conveyor roller (21) and one end of the synchronous roller (51), respectively.

5. The lead frame transfer and stacking device according to claim 1, characterized in that: The frame (1) is located in the mounting groove and has two annular track rods (11). The annular track rods (11) are fixedly connected to the inner wall of the mounting groove with connecting rods that are distributed at equal intervals. The end of the mounting plate (3) is located between the outer wall of the conveyor belt (2) and the inner wall of the annular track rods (11).

6. The lead frame transfer and stacking device according to claim 1, characterized in that: A transfer frame (12) is placed between the two sets of conveyor belts (2). Support legs (13) are fixedly connected to the four corners of the bottom of the transfer frame (12). Support grooves (14) are opened on the top of the transfer frame (12) and at the corresponding position of each support leg (13).

7. A lead frame transfer and stacking device according to claim 6, characterized in that: The transfer frame (12) has two limiting grooves (19) on its top. A linear array of placement grooves (20) is formed on one side of the limiting groove (19). A limiting plate (15) is fixedly connected to the inner wall of the placement groove (20) away from the limiting groove (19). A limiting rod (16) is slidably connected in the limiting groove (19). A second spring with a linear array is fixedly connected between the limiting rod (16) and the inner wall of the limiting groove (19). The second spring is located on the side of the limiting rod (16) away from the limiting plate (15).

8. A lead frame transfer and stacking device according to claim 1, characterized in that: A connecting roller (17) is rotatably connected to one side of the frame (1). Both ends of the connecting roller (17) and one end of the two conveying rollers (21) are fixedly connected to bevel gears (18). The two bevel gears (18) located at one end of the connecting roller (17) are meshed with each other.

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