Novel lead frame anti-oxidation coating coating structure

By using a servo motor-driven continuous conveying system and adjustment mechanism, the smooth conveying and uniform coating of the lead frame are achieved, solving the problem of reduced production efficiency caused by frequent lifting operations in traditional methods, improving the uniformity and firm adhesion of the coating, and increasing production efficiency.

CN224142685UActive Publication Date: 2026-04-21CWB AUTOMOTIVE ELECTRONICS (TAICANG) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CWB AUTOMOTIVE ELECTRONICS (TAICANG) CO LTD
Filing Date
2025-05-15
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

In large-scale production, the traditional lead frame anti-oxidation coating structure suffers from reduced production efficiency due to the frequent switching of the lifting mechanism affecting the continuity of the coating process.

Method used

A continuous conveying system driven by a servo motor, combined with heating, stirring, vibration and drying devices, enables stable conveying and uniform coating of the lead frame. An adjustment mechanism ensures that the height of the pressure shaft under the coating adapts to changes in liquid level, avoiding frequent lifting and lowering operations.

Benefits of technology

This method improves the production efficiency and stability of the lead frame anti-oxidation coating, ensures coating uniformity and firm adhesion, and solves the problem of reduced production efficiency caused by frequent lifting operations in traditional methods.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224142685U_ABST
    Figure CN224142685U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of coating, and discloses a novel lead frame anti-oxidation coating coating structure which comprises a base, a mounting plate is fixedly connected to the rear side of the top of the base, driving assemblies are arranged at the left end and the right end of the front side and the rear side of the mounting plate, and a dip-coating box is fixedly connected to the top of the base. A third servo motor is fixedly connected to the right side of the top of the base, the output end of the third servo motor penetrates through the dip-coating box and is fixedly connected with a spiral stirring shaft, a heating assembly is arranged on the inner wall of the dip-coating box, a fixing plate is fixedly connected to the top of the front side of the mounting plate, and a dip-coating downward pressing shaft is arranged at the bottom of the fixing plate. A fixing frame is arranged on the left side of the top of the mounting plate. According to the utility model, the lead frame descends through the dip-coating downward pressing shaft to be immersed in the coating liquid, the third servo motor stirs the coating liquid, and the vibration motor in the fixing frame is started to enable the vibration guide shaft to vibrate, so that the coating liquid permeates into each part of the lead frame.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to a novel lead frame anti-oxidation coating structure. Background Technology

[0002] Anti-oxidation coating is a protective structure applied to the surface of metal parts. By coating the metal surface with an anti-oxidation coating, it can isolate the metal from direct contact with air, water vapor, and corrosive substances. The purpose of this structure is to prevent oxidation reactions in metal parts, thereby extending the service life of metal parts and ensuring the stability and reliability of their performance.

[0003] The novel leadframe anti-oxidation coating structure is an anti-oxidation coating system specifically designed for the leadframe, a key component of electronic devices. As an important bridge connecting the chip and external circuits, the performance of the leadframe directly affects the overall performance of the electronic device. The novel leadframe anti-oxidation coating structure adopts advanced materials and coating processes to provide anti-oxidation protection for the leadframe.

[0004] Traditional lead frame anti-oxidation coating structures, when using dip coating, cannot guarantee a constant and appropriate lifting speed with manual operation, resulting in uneven coating thickness and affecting product quality. Existing technologies use automated lifting mechanisms to lift the dip coating equipment. Through high-precision motors and control systems, the speed at which the lead frame is lifted from the coating tank is controlled, ensuring product quality. However, in actual use, the switching motion of the lifting mechanism when the lead frame enters and exits the coating tank affects the continuity of the coating process. In large-scale production, frequent lifting operations can lead to reduced production efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a novel lead frame anti-oxidation coating structure, which aims to improve the problem that the action switching of the lifting mechanism in the prior art affects the continuity of the coating process, and that frequent lifting operations will lead to reduced production efficiency in large-scale production.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a novel lead frame anti-oxidation coating structure, including a base, a mounting plate fixedly connected to the top rear side of the base, drive components provided at the front, rear, left, and right ends of the mounting plate, an immersion coating tank fixedly connected to the top of the base, a servo motor three fixedly connected to the top right side of the base, the output end of the servo motor three passing through the immersion coating tank and fixedly connected to a spiral stirring shaft, a heating component provided on the inner wall of the immersion coating tank, a fixing plate fixedly connected to the top front side of the mounting plate, an immersion coating pressure shaft provided at the bottom of the fixing plate, a fixing frame provided on the top left side of the mounting plate, a vibration motor fixedly connected to the bottom inner wall of the fixing frame, the same vibration guide shaft rotatably connected to the top front and rear sides of the fixing frame, a drying chamber fixedly connected to the top front left end of the mounting plate, heating tubes fixedly connected to all four sides of the inner wall of the drying chamber, a ventilation fan fixedly connected to the top inner wall of the drying chamber, and an adjustment mechanism provided at the bottom of the fixing plate for adjusting the height of the immersion coating pressure shaft.

[0007] As a further description of the above technical solution:

[0008] The adjustment mechanism includes a transmission bevel gear, the bottom of which is rotatably connected to the top of a fixed plate. A lead screw is rotatably connected to the bottom of the transmission bevel gear. A servo motor is fixedly connected to the rear top of the fixed plate. An active bevel gear is fixedly connected to the output end of the servo motor. The active bevel gear meshes with the transmission bevel gear. A slider is rotatably connected to the outer wall of the lead screw. An adjustment frame is fixedly connected to the inner wall of the slider. The bottom of the front and rear sides of the inner wall of the adjustment frame is rotatably connected to the front and rear sides of the dip-coating pressure shaft, respectively. Guide rods are fixedly connected to the front and rear sides of the bottom of the fixed plate. The outer walls of the two guide rods are slidably connected to the front and rear sides of the top of the adjustment frame, respectively.

[0009] As a further description of the above technical solution:

[0010] The drive assembly includes a conveyor shaft, the rear side of which is rotatably connected to the front right end of the mounting plate. An output shaft is rotatably connected to the front left end of the mounting plate. Upper rolling shafts are rotatably connected to the upper sides of the front left and right ends of the mounting plate. Transmission gears are fixedly connected to the rear sides of both the conveyor shaft and the output shaft through the mounting plate. Servo motors are fixedly connected to the left and right ends of the top rear side of the mounting plate. Drive gears are fixedly connected to the output ends of both servo motors. Corresponding tracks are meshed with the outer walls of the two drive gears and the two transmission gears.

[0011] As a further description of the above technical solution:

[0012] The heating assembly includes two heating tubes, the bottoms of which are fixedly connected to the front and rear ends of the bottom side of the inner wall of the dip coating tank, respectively. A temperature sensor is fixedly connected to the top of the front side of the inner wall of the dip coating tank.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the fixed frame is fixedly connected to the front and rear sides with guide plates, and the bottom side of the guide plates is fixedly connected to the top left side of the dip coating tank.

[0015] As a further description of the above technical solution:

[0016] Shock absorbers are fixedly connected to the bottom front, back, left and right sides of the frame, and the bottoms of the multiple shock absorbers are fixedly connected to the top of the base.

[0017] As a further description of the above technical solution:

[0018] A triangular block is fixedly connected to the bottom of the drying oven, and the rear side of the triangular block is fixedly connected to the front side of the mounting plate.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the top front left end of the base. The controller is electrically connected to servo motor one, servo motor three, two servo motors two, vibration motor, multiple heating tubes one, ventilation fan, temperature sensor and two heating tubes two.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, servo motor 2 starts, driving the conveyor shaft and output shaft to rotate. The lead frame is smoothly conveyed by the crawler to the top of the dip coating box. The dip coating pressure shaft descends and immerses it in the coating liquid. The heating tube heats the liquid, and the temperature sensor provides feedback on the temperature. Servo motor 3 stirs the coating liquid. The vibration motor in the fixed frame starts, causing the vibration guide shaft to vibrate, so that the coating liquid penetrates into all parts of the lead frame. After dip coating, the lead frame is sent to the drying box, where the heating tube dries it and the ventilation fan accelerates the drying process, thereby improving production efficiency.

[0023] 2. In this utility model, when the liquid level in the dipping tank drops due to the dipping of the lead frame, and the height of the dipping pressure shaft needs to be adjusted, the servo motor starts, and its output active bevel gear rotates, driving the transmission bevel gear meshed with it to rotate, thereby causing the lead screw to rotate. The slider on the lead screw moves axially, and the adjustment frame connected to it moves accordingly. The adjustment frame drives the dipping pressure shaft downward, and the guide rod at the bottom of the fixed plate guides the movement of the adjustment frame, ensuring that the lead frame is dipped at a suitable liquid level and maintaining the normal progress of the dipping process. Attached Figure Description

[0024] Figure 1 This is a perspective view of the novel lead frame anti-oxidation coating structure proposed in this utility model;

[0025] Figure 2 This is a front view of the novel lead frame anti-oxidation coating structure proposed in this utility model;

[0026] Figure 3 This is a side view of the novel lead frame anti-oxidation coating structure proposed in this utility model;

[0027] Figure 4 This is a top view of the dip-coating box structure of the novel lead frame anti-oxidation coating structure proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the adjustment mechanism for the novel lead frame anti-oxidation coating structure proposed in this utility model;

[0029] Figure 6 This is a schematic diagram of the ventilation fan structure of the novel lead frame anti-oxidation coating structure proposed in this utility model.

[0030] Legend:

[0031] 1. Base; 2. Adjustment mechanism; 201. Transmission bevel gear; 202. Servo motor one; 203. Drive bevel gear; 204. Lead screw; 205. Slider; 206. Adjustment frame; 207. Guide rod; 3. Mounting plate; 4. Conveyor shaft; 5. Output shaft; 6. Upper roller shaft; 7. Transmission gear; 8. Servo motor two; 9. Drive gear; 10. Track; 11. Dipping tank; 12. Servo motor three; 13. Spiral stirring shaft; 14. Fixing frame; 15. Vibration motor; 16. Vibration guide shaft; 17. Drying oven; 18. Heating tube one; 19. Ventilation fan; 20. Guide plate; 21. Fixing plate; 22. Dipping lower pressure shaft; 23. Shock absorber; 24. Controller; 25. Triangular block; 26. Temperature sensor; 27. Heating tube two. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 3 and Figure 6This utility model provides an embodiment of a novel lead frame anti-oxidation coating structure, including a base 1 providing an installation platform. An installation plate 3 is fixedly connected to the top rear side of the base 1, serving as a connection and support. Driving components are provided on the front, rear, left, and right ends of the installation plate 3, enabling the conveying function of the lead frame. An immersion coating tank 11 is fixedly connected to the top of the base 1, used to hold the anti-oxidation coating liquid. A servo motor 12 is fixedly connected to the top right side of the base 1, providing power to rotate a spiral stirring shaft 13. The output end of the servo motor 12 passes through the immersion coating tank 11 and is fixedly connected to the spiral stirring shaft 13, stirring the coating liquid in the immersion coating tank 11 to ensure uniform composition. A heating component is provided on the inner wall of the immersion coating tank 11 to heat... The component can heat the coating liquid in the dip coating tank 11 to maintain a suitable temperature. A fixing plate 21 is fixedly connected to the top front side of the mounting plate 3. A dip coating pressing shaft 22 is provided at the bottom of the fixing plate 21. The dip coating pressing shaft 22 can press the lead frame down into the coating liquid in the dip coating tank 11 for dip coating. A fixing bracket 14 is provided on the top left side of the mounting plate 3 for mounting the vibration motor 15 and the vibration guide shaft 16. The vibration motor 15 is fixedly connected to the bottom inner wall of the fixing bracket 14. The vibration motor 15 can generate vibration when it is started. The same vibration guide shaft 16 is rotatably connected to the top front and rear sides of the inner wall of the fixing bracket 14. The vibration guide shaft 16 can transmit the vibration generated by the vibration motor 15, causing the vibration guide shaft 16 to vibrate. The top front left end of the mounting plate 3 is fixedly connected to A drying chamber 17 is provided for drying the dip-coated lead frame. Heating tubes 18 are fixedly connected to all four sides of the inner wall of the drying chamber 17 to heat the interior and dry the lead frame. A ventilation fan 19 is fixedly connected to the top of the inner wall of the drying chamber 17 to accelerate air circulation and improve drying efficiency. The drive assembly includes a conveyor shaft 4, the rear of which is rotatably connected to the front right end of the mounting plate 3, providing rotational support for the conveyor shaft 4. An output shaft 5 is rotatably connected to the front left end of the mounting plate 3. Upper rolling shafts 6 are rotatably connected to the upper sides of the front left and right ends of the mounting plate 3 to guide the conveying of the lead frame. Both the rear sides of the conveyor shaft 4 and the output shaft 5 pass through the mounting plate 3 and are fixedly connected to transmission gears. Wheel 7 enables synchronous rotation of conveyor shaft 4 and output shaft 5. Servo motors 8 are fixedly connected to the top rear left and right ends of mounting plate 3, providing power to the drive assembly. Drive gears 9 are fixedly connected to the output ends of both servo motors 8, meshing with transmission gears 7 to transmit power from the servo motors 8 to the transmission gears 7. Corresponding tracks 10 are meshed with the outer walls of the two drive gears 9 and the two transmission gears 7, respectively. Driven by the drive gears 9 and transmission gears 7, the tracks 10 achieve smooth transport of the lead frame. The heating assembly includes two heating tubes 27, which heat the coating liquid in the immersion coating tank 11. The bottoms of the two heating tubes 27 are fixedly connected to the front and rear ends of the inner wall bottom of the immersion coating tank 11.A temperature sensor 26 is fixedly connected to the top front side of the inner wall of the dip coating tank 11. The temperature sensor 26 can monitor the temperature of the coating liquid inside the dip coating tank 11 in real time. Shock absorbers 23 are fixedly connected to the bottom, front, rear, left, and right ends of the mounting bracket 14. The shock absorbers 23 can buffer the vibration generated by the vibration motor 15, avoiding adverse effects on the overall structure. The bottoms of multiple shock absorbers 23 are fixedly connected to the top of the base 1, securing the mounting bracket 14 to the base 1. An adjustment mechanism 2 is provided at the bottom of the mounting plate 21. The adjustment mechanism 2 is used to adjust the height of the dip coating lower pressure shaft 22 to adapt to changes in the liquid level inside the dip coating tank 11.

[0034] Specifically, when the coating structure is in operation, servo motor 28 starts, and its output drive gear 9 drives the transmission gear 7, which in turn drives the conveyor shaft 4 and output shaft 5 to rotate. The guide frame is smoothly conveyed above the base 1 via the track 10. When the guide frame is conveyed above the dip coating tank 11, the dip coating pressing shaft 22 at the bottom of the fixing plate 21 descends, pressing the guide frame into the anti-oxidation coating liquid inside the dip coating tank 11. Heating tube 27 heats the coating liquid in the dip coating tank 11, and temperature sensor 26 monitors the temperature in real time and feeds back the signal to adjust the heating state in a timely manner. Simultaneously, servo motor 312 drives the spiral stirring shaft 13 to rotate, stirring the coating liquid to ensure uniform composition and prevent sedimentation, further guaranteeing coating consistency. During the dip coating process, the vibration motor 15 inside the fixing frame 14 starts, guiding the vibration... Vibration is transmitted to shaft 16, causing the vibration guide shaft 16 to vibrate, which helps the coating liquid to better penetrate into all parts of the lead frame, improving the coating quality. At the same time, the shock absorber 23 effectively buffers the vibration, avoiding adverse effects on the overall structure. After the dip coating is completed, the dip coating pressure shaft 22 rises, and the lead frame continues to be conveyed to the drying chamber 17 by the conveyor belt 10. The heating tube 18 in the drying chamber 17 heats and dries the lead frame, and the ventilation fan 19 accelerates air circulation, making the drying process more efficient, removing the solvent in the coating, and allowing the anti-oxidation coating to adhere firmly to the lead frame. This structure, through a continuous conveying system, replaces the traditional frequent lifting operations, avoiding the impact of lifting mechanism operation switching on the continuity of the coating process. In large-scale production, it greatly improves production efficiency and achieves efficient and stable coating of the lead frame with anti-oxidation coating.

[0035] Reference Figure 1 , Figure 2 and Figure 5The adjusting mechanism 2 includes a transmission bevel gear 201, the bottom of which is rotatably connected to the top of the fixed plate 21, providing stable support and a base for rotation. A lead screw 204 is rotatably connected to the bottom of the transmission bevel gear 201, enabling the transmission bevel gear 201 to transmit power to the lead screw 204, causing the lead screw 204 to rotate. A servo motor 202 is fixedly connected to the rear top of the fixed plate 21, providing a power source. A drive bevel gear 203 is fixedly connected to the output end of the servo motor 202, and the drive bevel gear 203 meshes with the transmission bevel gear 201, realizing the transmission of power from the drive bevel gear 203 to the transmission bevel gear 201. A slider 205 is rotatably connected to the outer wall of the lead screw 204. The rotation of the lead screw 204 can be converted into the linear motion of the slider 205 along the axis of the lead screw 204. An adjustment frame 206 is fixedly connected to the inner wall of the slider 205, which moves together with the slider 205. The bottom of the front and rear sides of the inner wall of the adjustment frame 206 is rotatably connected to the front and rear sides of the dip coating lower pressure shaft 22, so that the adjustment frame 206 can drive the dip coating lower pressure shaft 22 to adjust its height. Guide rods 207 are fixedly connected to the bottom front and rear sides of the fixed plate 21. The guide rods 207 provide guidance for the movement of the adjustment frame 206. The outer walls of the two guide rods 207 are slidably connected to the top front and rear sides of the adjustment frame 206, respectively, to ensure that the adjustment frame 206 slides stably along the guide rods 207 and to ensure the accuracy of the height adjustment of the dip coating lower pressure shaft 22.

[0036] Specifically, when the lead frame is dip-coated, causing the liquid level in the dip-coating tank 11 to drop and requiring adjustment of the height of the dip-coating pressure shaft 22, the servo motor 202 starts, and the active bevel gear 203 at its output end rotates accordingly. Since the active bevel gear 203 meshes with the transmission bevel gear 201, the transmission bevel gear 201 begins to rotate. The bottom of the transmission bevel gear 201 is rotatably connected to the lead screw 204, so the lead screw 204 also rotates under the drive of the transmission bevel gear 201. The slider 205, rotatably connected to the outer wall of the lead screw 204, moves along the axial direction of the lead screw 204 due to its rotation. The adjusting frame 206 is fixedly connected to the wall, so the adjusting frame 206 will move together with the slider 205. The bottom of the front and rear sides of the inner wall of the adjusting frame 206 is rotatably connected to the front and rear sides of the dipping pressure shaft 22, thereby driving the dipping pressure shaft 22 to move downward. At the same time, the guide rod 207 fixedly connected to the bottom front and rear sides of the fixed plate 21 has its outer wall slidably connected to the top front and rear sides of the adjusting frame 206, which plays a guiding role in the movement of the adjusting frame 206, ensuring the stability and accuracy of the movement of the adjusting frame 206, ensuring that the lead frame can always be accurately dipped in the coating liquid at the appropriate liquid level, maintaining the normal progress of the dipping work, and solving the problem of the dipping effect being affected by the drop in liquid level.

[0037] Reference Figure 1 , Figure 4 and Figure 6 A guide plate 20 is fixedly connected to the front and rear sides of the inner wall of the fixed frame 14. The guide plate 20 can catch the liquid dripping from the surface of the lead frame when it vibrates. The bottom side of the guide plate 20 is fixedly connected to the top left side of the dip coating tank 11, guiding the caught liquid into the dip coating tank 11 so that the liquid returns to the dip coating liquid system and avoids waste. A triangular block 25 is fixedly connected to the bottom of the drying box 17. The triangular block 25 enhances the stability of the drying box 17 on the mounting plate 3 by increasing the structural support points. The rear of the triangular block 25 A controller 24 is fixedly connected to the front side of the mounting plate 3 and the top left side of the base 1. The controller 24 serves as the control center of the entire device, coordinating the operation of each component. The controller 24 is electrically connected to servo motor 202, allowing precise control of its operation to achieve accurate adjustment of the height of the dip-coating pressure shaft 22. The controller 24 is also electrically connected to servo motor 12, controlling its speed to adjust the spiral stirring shaft 13's position on the dip-coating liquid. The controller 24 is electrically connected to two servo motors 8, which can control the rotation of the conveyor shaft 4 and output shaft 5 in the drive assembly to ensure that the lead frame is smoothly conveyed along the set path. The controller 24 is electrically connected to the vibration motor 15, which determines the opening and closing of the vibration motor 15 and the vibration frequency, so that the vibration guide shaft 16 generates vibration that meets the requirements of dip coating. The controller 24 is electrically connected to multiple heating tubes 18, which can adjust the heating power of the heating tubes 18 as needed to ensure that the drying temperature in the drying box 17 is maintained. The controller 24 is electrically connected to the ventilation fan 19, which can adjust the wind speed of the ventilation fan 19 to optimize the air circulation in the drying box 17 and improve the drying efficiency. The controller 24 is electrically connected to the temperature sensor 26, which can obtain the coating liquid temperature information fed back by the temperature sensor 26 in real time, so as to make timely temperature adjustment decisions. The controller 24 is electrically connected to two heating tubes 27, which can maintain the stability of the coating liquid temperature in the dip coating box 11 by controlling the working state of the heating tubes 27.

[0038] Specifically, the guide plate 20 can catch the liquid dripping from the surface of the lead frame when it vibrates. The bottom side of the guide plate 20 is fixedly connected to the top left side of the dip coating tank 11, guiding the caught liquid into the dip coating tank 11 so that the liquid returns to the dip coating liquid system and avoids waste. The triangular block 25 enhances the stability of the drying oven 17 on the mounting plate 3 by increasing the structural support points. The controller 24 serves as the control center of the entire equipment and is responsible for coordinating the operation of various components.

[0039] Working principle: When the coating structure is running, servo motor 28 starts, and its output drive gear 9 drives the transmission gear 7, which in turn drives the conveyor shaft 4 and output shaft 5 to rotate. The guide frame is smoothly conveyed above the base 1 via the crawler 10. When the guide frame is conveyed above the dipping tank 11, the dipping pressing shaft 22 at the bottom of the fixed plate 21 descends, pressing the guide frame into the anti-oxidation coating liquid inside the dipping tank 11. Heating tube 27 heats the coating liquid in the dipping tank 11. Temperature sensor 26 monitors the temperature in real time and feeds back the signal to adjust the heating state in a timely manner. Simultaneously, servo motor 312 drives the spiral stirring shaft 13 to rotate, stirring the coating liquid to ensure uniform composition and prevent sedimentation, further guaranteeing coating consistency. During the dipping process, the vibration motor 15 inside the fixed frame 14 starts, guiding the vibration... Vibration is transmitted to shaft 16, causing the vibration guide shaft 16 to vibrate, which helps the coating liquid to better penetrate into all parts of the lead frame, improving the coating quality. At the same time, the shock absorber 23 effectively buffers the vibration, avoiding adverse effects on the overall structure. After the dip coating is completed, the dip coating pressure shaft 22 rises, and the lead frame continues to be conveyed to the drying box 17 with the conveyor belt 10. The heating tube 18 in the drying box 17 heats and dries the lead frame, and the ventilation fan 19 accelerates the air circulation, making the drying process more efficient, removing the solvent in the coating, and making the anti-oxidation coating firmly adhere to the lead frame. This structure, through a continuous conveying system, replaces the traditional frequent lifting operations, avoiding the impact of the lifting mechanism's action switching on the continuity of the coating process. In large-scale production, it greatly improves production efficiency and achieves efficient and stable coating of the lead frame with anti-oxidation coating.

[0040] Furthermore, when the lead frame is dip-coated, causing the liquid level in the dip-coating tank 11 to drop and requiring adjustment of the height of the dip-coating pressure shaft 22, the servo motor 202 starts, and the active bevel gear 203 at its output end rotates accordingly. Since the active bevel gear 203 meshes with the transmission bevel gear 201, the transmission bevel gear 201 begins to rotate. The bottom of the transmission bevel gear 201 is rotatably connected to the lead screw 204, so the lead screw 204 also rotates under the drive of the transmission bevel gear 201. The slider 205, rotatably connected to the outer wall of the lead screw 204, moves along the axial direction of the lead screw 204 due to its rotation. The inner wall of the slider 205 remains fixed. The adjusting frame 206 is fixedly connected to the slider 205, so the adjusting frame 206 will move together with the slider 205. The bottom of the front and rear sides of the inner wall of the adjusting frame 206 is rotatably connected to the front and rear sides of the dipping pressure shaft 22, thereby driving the dipping pressure shaft 22 to move downward. At the same time, the guide rod 207 fixedly connected to the bottom front and rear sides of the fixed plate 21 has its outer wall slidably connected to the top front and rear sides of the adjusting frame 206, which plays a guiding role for the movement of the adjusting frame 206, ensuring the stability and accuracy of the movement of the adjusting frame 206, ensuring that the lead frame can always be accurately dipped in the coating liquid at the appropriate liquid level, maintaining the normal progress of the dipping work, and solving the problem of the dipping effect being affected by the drop in liquid level.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel leadframe anti-oxidation coating coating structure comprising a base (1), characterized in that: A mounting plate (3) is fixedly connected to the top rear side of the base (1). Driving components are provided on the front, rear, left, and right ends of the mounting plate (3). A dipping tank (11) is fixedly connected to the top of the base (1). A servo motor (12) is fixedly connected to the top right side of the base (1). The output end of the servo motor (12) passes through the dipping tank (11) and is fixedly connected to a spiral stirring shaft (13). A heating component is provided on the inner wall of the dipping tank (11). A fixing plate (21) is fixedly connected to the top front side of the mounting plate (3). A dipping pressure shaft (22) is provided at the bottom of the fixing plate (21). A fixed frame (14) is provided on the top left side of the mounting plate (3). A vibration motor (15) is fixedly connected to the bottom side of the inner wall of the fixed frame (14). The same vibration guide shaft (16) is rotatably connected to the top of the front and rear sides of the inner wall of the fixed frame (14). A drying box (17) is fixedly connected to the top of the front left end of the mounting plate (3). A heating tube (18) is fixedly connected to the four sides of the inner wall of the drying box (17). A ventilation fan (19) is fixedly connected to the top of the inner wall of the drying box (17). An adjustment mechanism (2) is provided at the bottom of the fixed plate (21). The adjustment mechanism (2) is used to adjust the height of the dip coating pressure shaft (22).

2. The novel leadframe anti-oxidation coating coated structure according to claim 1, characterized in that: The adjusting mechanism (2) includes a transmission bevel gear (201), the bottom of which is rotatably connected to the top of the fixed plate (21). A lead screw (204) is rotatably connected to the bottom of the transmission bevel gear (201). A servo motor (202) is fixedly connected to the rear top of the fixed plate (21). A drive bevel gear (203) is fixedly connected to the output end of the servo motor (202). The drive bevel gear (203) and the transmission bevel gear (204) are connected to each other. 1) Engaging connection: The outer wall of the lead screw (204) is rotatably connected to a slider (205), and the inner wall of the slider (205) is fixedly connected to an adjusting frame (206). The bottom of the front and rear sides of the inner wall of the adjusting frame (206) is rotatably connected to the front and rear sides of the dip-coating pressure shaft (22). The bottom front and rear sides of the fixed plate (21) are fixedly connected to guide rods (207). The outer walls of the two guide rods (207) are slidably connected to the top front and rear sides of the adjusting frame (206).

3. The novel leadframe anti-oxidation coating coated structure according to claim 1, characterized in that: The drive assembly includes a conveyor shaft (4), the rear side of which is rotatably connected to the front right end of the mounting plate (3). The front left end of the mounting plate (3) is rotatably connected to an output shaft (5). The upper left and right ends of the front of the mounting plate (3) are rotatably connected to upper rolling shafts (6). The rear sides of the conveyor shaft (4) and the output shaft (5) pass through the mounting plate (3) and are fixedly connected to transmission gears (7). The top rear left and right ends of the mounting plate (3) are fixedly connected to servo motors (8). The output ends of the two servo motors (8) are fixedly connected to drive gears (9). The outer walls of the two drive gears (9) and the two transmission gears (7) are respectively meshed with corresponding tracks (10).

4. The novel leadframe anti-oxidation coating coated structure according to claim 1, characterized in that: The heating assembly includes two heating tubes (27), the bottoms of which are fixedly connected to the front and rear ends of the inner wall of the dip coating tank (11), and a temperature sensor (26) is fixedly connected to the top of the front side of the inner wall of the dip coating tank (11).

5. The novel leadframe anti-oxidation coating coated structure according to claim 1, characterized in that: The inner wall of the fixed frame (14) is fixedly connected to the front and rear sides of the guide plate (20), and the bottom side of the guide plate (20) is fixedly connected to the top left side of the dip coating box (11).

6. The novel leadframe anti-oxidation coating coated structure according to claim 1, characterized in that: Shock absorbers (23) are fixedly connected to the bottom front and rear sides and left and right ends of the fixed frame (14), and the bottom of the multiple shock absorbers (23) is fixedly connected to the top of the base (1).

7. The novel leadframe anti-oxidation coating coated structure according to claim 1, characterized in that: A triangular block (25) is fixedly connected to the bottom of the drying box (17), and the rear side of the triangular block (25) is fixedly connected to the front side of the mounting plate (3).

8. The novel leadframe anti-oxidation coating coated structure according to claim 2, characterized in that: A controller (24) is fixedly connected to the top front left end of the base (1). The controller (24) is electrically connected to servo motor one (202), servo motor three (12), two servo motor two (8), vibration motor (15), multiple heating tube one (18), ventilation fan (19), temperature sensor (26) and two heating tube two (27).