A kind of high-voltage IGBT molybdenum copper substrate nickel plating pickling activation device

Abstract

The present application relates to molybdenum copper substrate pickling activation device technical field, especially in kind of high voltage IGBT molybneum copper substrate nickel plating pickling activation device, including equipment seat, the upper end surface of equipment seat is fixedly installed with the integrative groove, the integrative groove includes pickling tank and cleaning tank, the heat insulation plate is arranged between pickling tank and cleaning tank, and pickling tank and cleaning tank are fixedly connected with heat insulation plate, the front end surface of cleaning tank is fixedly installed with activation tank, the connecting place of pickling tank, cleaning tank and activation tank is fixedly installed with control box, the upper end surface of control box is rotatably installed with hanger assembly, the present application removes the oxidation layer, oil dirt and impurity on the surface of molybdenum copper substrate through pickling tank, cleaning tank washes residual acid, activation tank improves the surface activity of substrate, and filter assembly guarantees the cleanliness of pickling liquid, provides clean, activated substrate surface for nickel plating process, enhances the binding force between nickel plating layer and substrate, effectively improves the quality of nickel plating.

Description

Technical Field

[0001] This invention relates to the technical field of pickling and activation equipment for molybdenum-copper substrates, and particularly to a pickling and activation equipment for nickel plating on high-voltage IGBT molybdenum-copper substrates. Background Technology

[0002] In the field of electronic equipment manufacturing, high-voltage IGBTs (Insulated Gate Bipolar Transistors) are crucial power semiconductor devices, and their performance and reliability are essential for the stable operation of the entire electronic system. In the manufacturing process of the molybdenum-copper substrate for high-voltage IGBTs, nickel plating is a critical step. The nickel plating layer improves the substrate's corrosion resistance, conductivity, and solderability, enhancing its connection performance with other electronic components. However, surface treatment of the molybdenum-copper substrate is crucial before nickel plating. During processing, transportation, and storage, the surface of the molybdenum-copper substrate inevitably forms an oxide layer and becomes contaminated with oil and impurities. These oxide layers, oil, and impurities severely affect the adhesion between the nickel plating layer and the substrate, leading to problems such as peeling and flaking of the nickel plating layer, thereby reducing the quality of the nickel plating and affecting the performance and reliability of the high-voltage IGBT.

[0003] Traditional surface treatment methods for molybdenum-copper substrates typically employ simple pickling and cleaning processes. During pickling, the substrate is usually directly immersed in the pickling tank. However, the lack of effective filtration allows impurities and suspended solids in the pickling solution to accumulate, affecting not only the pickling effect but also shortening the lifespan of the pickling solution and increasing production costs. Furthermore, the uneven temperature distribution of the solution within traditional pickling tanks leads to instability in the pickling process, affecting the consistency of processing results. During cleaning, simple immersion is often insufficient to completely remove residual acid, and blind spots exist, failing to guarantee a comprehensive clean substrate surface. Similarly, the activation process suffers from uneven activation solution temperature and inconsistent activation effects, failing to effectively improve the activity of the substrate surface.

[0004] In addition, traditional surface treatment equipment mostly relies on manual transfer and clamping of substrates during operation, resulting in low production efficiency. Furthermore, manual operation is prone to errors, leading to inaccurate processing positions and angles of the substrates, which affects processing quality.

[0005] Therefore, developing a surface treatment device that can effectively remove oxide layers, oil stains and impurities from the surface of molybdenum-copper substrates, improve the surface activity of the substrate, enhance the adhesion between the nickel plating layer and the substrate, and improve production efficiency and processing quality is of great practical significance. Summary of the Invention

[0006] This invention solves the problems in related technologies by proposing a high-voltage IGBT molybdenum-copper substrate nickel plating acid pickling and activation device, which addresses the issues of low production efficiency and poor processing quality in existing molybdenum-copper substrate nickel plating acid pickling and activation equipment.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation device, comprising a device base, an integrated tank fixedly installed on the upper end face of the device base, the integrated tank including a pickling tank and a cleaning tank, a heat insulation plate provided between the pickling tank and the cleaning tank, and both the pickling tank and the cleaning tank being fixedly connected to the heat insulation plate, an activation tank fixedly installed on the front end face of the cleaning tank, a control box fixedly installed at the connection of the pickling tank, the cleaning tank and the activation tank, a hanger assembly rotatably installed on the upper end face of the control box, and a rotary cylinder for driving the hanger assembly to rotate fixedly installed in the control box, a movable frame assembly fixedly installed at the head of the hanger assembly, two sets of adjustable clamps installed at the lower end of the movable frame assembly, and a drive assembly for driving the adjustable clamps to move installed on the movable frame assembly, and a filter assembly connected to the pickling tank also installed on the device base.

[0008] By adopting the above technical solutions, the equipment base provides a stable support foundation for the entire device, ensuring its stability during operation. The integrated tank combines the pickling tank and cleaning tank, and the insulation plate effectively reduces the temperature interaction between the two tanks, ensuring their respective operating temperature environments. The activation tank provides a place for the molybdenum-copper substrate to undergo activation treatment, and the control box controls the rotation of the hanger assembly, enabling the transfer of the molybdenum-copper substrate between different tanks. The cooperation of the hanger assembly, movable frame assembly, adjustable clamp, and drive assembly allows for flexible clamping and movement of the molybdenum-copper substrate, facilitating a series of processing operations such as pickling, cleaning, and activation. The filter assembly is connected to the pickling tank to filter the pickling solution, ensuring its cleanliness, improving the pickling effect, and extending the service life of the pickling solution.

[0009] As a preferred embodiment, the pickling tank includes a top shell, a bottom shell, and a drain shell connected to the filter assembly. The top shell is fixedly installed on the upper end face of the bottom shell, and the bottom surface of the top shell has several sets of drain channels with control valves. The drain shell is fixedly installed between the top shell and the bottom shell, and the upper end of the drain shell is connected to the drain channel.

[0010] By adopting the above technical solution, the combined design of the top shell, bottom shell, and drain shell makes the flow and discharge of pickling solution more rational. The connection between the drain tank and the drain shell facilitates the guidance of the pickling solution to the filter assembly for filtration. At the same time, the drain tank with a control valve can control the discharge speed and flow rate of the pickling solution as needed, which facilitates precise control of the pickling process.

[0011] As a preferred embodiment, an inclined placement plate is installed inside the top shell, the placement plate is fixedly connected to the top shell, and several sets of support bars are evenly installed on the upper surface of the placement plate, the support bars are fixedly connected to the placement plate, and a pH value display screen and a temperature display screen are also installed on the upper surface of the top shell.

[0012] By adopting the above technical solution, the inclined installation of the placement plate facilitates the flow of pickling solution within the tank, allowing the molybdenum-copper substrate to fully contact the pickling solution and improving the pickling effect. The support bars support the molybdenum-copper substrate, preventing direct large-area contact between the substrate and the placement plate, ensuring the pickling solution effectively acts on the substrate surface. The pH and temperature displays can monitor the pH and temperature of the pickling solution in real time, allowing operators to adjust pickling process parameters promptly based on the displayed data, ensuring the stability of the pickling effect.

[0013] As a preferred embodiment, the cleaning tank includes an outer tank shell, a bottom spray plate, and several sets of spray bends. The bottom spray plate is fixedly and inclined in the outer tank shell. The spray bends are evenly arranged above the bottom spray plate and are fixedly connected to the outer tank shell. A drain pipe with a control valve is fixedly installed in the outer tank shell. Several sets of angled nozzles are evenly and fixedly installed on the bottom spray plate. A lower nozzle is also sealed and installed on the spray bend. A spray pump for supplying liquid to the angled nozzles and the lower nozzles is also fixedly installed in the outer tank shell.

[0014] By adopting the above technical solution, the outer shell, as the main body of the cleaning tank, provides space to accommodate the cleaning solution and the molybdenum-copper substrate. The angled and downward nozzles on the bottom spray plate and the spray bend can rinse the molybdenum-copper substrate from different angles, improving the comprehensiveness and thoroughness of the cleaning. The drain pipe can easily discharge the wastewater after cleaning, and the spray pump provides sufficient pressure to the nozzles to ensure the cleaning effect.

[0015] As a preferred embodiment, the control box includes a longitudinal tube shell and a positioning bracket for mounting the hanger assembly. The positioning bracket is fixedly installed on the upper end face of the longitudinal tube shell. An auxiliary bearing is also installed at the head of the positioning bracket. The outer ring of the auxiliary bearing is engaged and fixed with the positioning bracket, and the inner ring of the auxiliary bearing is sleeved and fixed on the hanger assembly.

[0016] By adopting the above technical solution, the longitudinal tube shell provides support and guidance for the rotation of the hanger assembly. The cooperation between the positioning bracket and the auxiliary bearing makes the rotation of the hanger assembly more stable and smooth, reduces friction and shaking during the rotation process, and improves the operational stability and reliability of the device.

[0017] As a preferred embodiment, the hanger assembly includes a rotating rod section, a horizontal plate seat, and a hanger seat for mounting the movable frame assembly. The lower end of the rotating rod section is rotatably mounted on the longitudinal tube shell. One end of the horizontal plate seat is fixedly mounted on the head of the rotating rod section, and the hanger seat is rotatably mounted on the other end of the horizontal plate seat. A driven gear is sleeved and fixedly mounted on the head of the hanger seat. A drive motor is also fixedly mounted on the horizontal plate seat, and a drive gear that meshes with the driven gear is fixedly mounted on the output shaft of the drive motor.

[0018] By adopting the above technical solution, the rotating rod rotates under the drive of the rotary cylinder, realizing the position transfer of the molybdenum-copper substrate between different tanks. The combination of the horizontal plate seat and the hanger seat expands the range of motion of the hanger assembly. The drive motor drives the hanger seat to rotate through the meshing of the drive gear and the driven gear, further adjusting the angle of the movable frame assembly, so that the molybdenum-copper substrate can accurately enter different tanks for processing.

[0019] As a preferred embodiment, the movable frame assembly includes a top seat, a longitudinal slide, and a movable seat for sliding installation of an adjustable clamp. The top seat is fixedly connected to the lower end of the hanger seat, the longitudinal slide is fixedly installed on the lower end face of the top seat, the movable seat is slidably installed on the longitudinal slide, and an electric cylinder for driving the movable seat to rise and fall is also fixedly installed on the longitudinal slide. The movable seat is provided with a guide groove for sliding installation of the adjustable clamp.

[0020] By adopting the above technical solution, the top seat connects the movable frame assembly to the hanger seat. The cooperation between the longitudinal slide and the movable seat allows the movable seat to slide up and down on the longitudinal slide, realizing the lifting and lowering movement of the adjustable clamp. The electric cylinder provides power for the lifting and lowering of the movable seat, facilitating the insertion and removal of the molybdenum copper substrate into or out of the slot. The guide groove provides guidance for the sliding of the adjustable clamp, ensuring more accurate and stable movement of the adjustable clamp.

[0021] As a preferred embodiment, the adjustable clamping seat includes a sliding frame, a connecting frame, and an electric gripper. The upper end of the sliding frame is slidably mounted in a guide groove, the connecting frame is fixedly mounted at the lower end of the sliding frame, and the electric gripper is fixedly mounted at both ends of the connecting frame. The driving assembly includes a control motor and a threaded rod. The control motor is fixedly mounted on a movable seat, one end of the threaded rod is fixedly connected to the output shaft of the control motor, and the other end of the threaded rod extends into the guide groove. The sliding frame has a threaded hole that mates with the threaded rod.

[0022] By adopting the above technical solution, the electric grippers of the adjustable clamp can firmly hold the molybdenum-copper substrate. The design of the sliding frame and connecting frame allows the adjustable clamp to slide on the movable seat. The control motor of the drive component drives the sliding frame to move in the guide groove through the threaded rod, thereby realizing the adjustment of the position of the adjustable clamp. In this way, when one set is clamped, the other set can be removed from the molybdenum-copper substrate, which facilitates the continuous change of different clamping positions and avoids blind spots during the processing of molybdenum-copper substrate.

[0023] As a preferred embodiment, the filtration assembly includes a filter box, a cover, and a filter frame. The filter box is fixedly installed on the equipment base and is sealed to the drain shell. The cover is detachably installed at the head of the filter box. The filter frame is fixedly installed on the lower end face of the cover and has several sets of filter screens installed on it. An extension shell is also fixedly installed on the outer side of the filter box. A return pump is fixedly installed in the extension shell. The suction port of the return pump is connected to the bottom inner side of the filter box, and the discharge port of the return pump is connected to the top shell through a drain pipe.

[0024] By adopting the above technical solution, the structure of the filter assembly ensures that after pickling, the pickling solution can be introduced into the filter box through the drain shell. After being filtered by the multi-layer filter screen on the filter rack in the filter box, it is discharged back into the pickling tank through the return pump. This ensures the cleanliness of the pickling solution and increases the pickling effect. At the same time, by installing the filter screen on the filter rack, and by removing it as a whole through the cover when cleaning is required, it is convenient to replace and clean the filter screen.

[0025] As a preferred embodiment, both the pickling tank and the activation tank are fixedly installed with a modular temperature equalization component. The modular temperature equalization component includes a bottom frame, an electric heating tube, a vertical frame, and a stirring motor. The electric heating tube is fixedly installed on both sides of the bottom frame, the vertical frame is vertically fixed on both sides of the upper end face of the bottom frame, the stirring motor is fixedly installed at the head of the vertical frame, and a stirring rod is fixedly installed on the output shaft of the stirring motor.

[0026] By adopting the above technical solution, the modular temperature equalization component facilitates overall installation and disassembly. During use, it can heat and stir the solutions in the pickling and activation tanks. The electric heating element heats the solution to a suitable temperature, and the stirring motor drives the stirring device to agitate the solution, ensuring a uniform temperature distribution and guaranteeing that the pickling and activation processes are carried out in a stable temperature environment, thereby improving the consistency and stability of the processing results.

[0027] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention removes the oxide layer, oil, and impurities from the surface of the molybdenum-copper substrate using an acid pickling tank, cleans residual acid using a cleaning tank, enhances the surface activity of the substrate using an activation tank, and ensures the cleanliness of the acid pickling solution using a filtration assembly. This provides a clean and activated substrate surface for the nickel plating process, strengthens the adhesion between the nickel plating layer and the substrate, and effectively improves the quality of nickel plating. During use, the coordinated operation of the hanger assembly, movable frame assembly, adjustable clamp, and drive assembly allows for flexible clamping, movement, and adjustment of the position and angle of the molybdenum-copper substrate, achieving automatic transfer and processing of the substrate between the acid pickling tank, cleaning tank, and activation tank, reducing manual operation and improving production efficiency. During the acid pickling, cleaning, and activation processes, the electric grippers repeatedly change the placement and clamping position of the molybdenum-copper substrate, avoiding obstruction of the substrate by the support bars and electric grippers, ensuring comprehensive and uniform processing, reducing blind spots, and improving processing results. The filtration assembly filters the acid pickling solution, removing impurities and suspended solids, ensuring the cleanliness of the solution, extending the service life of the acid pickling solution, and reducing production costs. The modular temperature equalization unit can heat and stir the solution in the pickling tank and activation tank, so that the solution temperature is evenly distributed, ensuring that the pickling and activation processes are carried out in a stable temperature environment, thus improving the consistency and stability of the processing effect. Attached Figure Description

[0028] Figure 1 This is a perspective view of the overall structure in an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 A front view of the device shown;

[0030] Figure 3 yes Figure 1 Side view of the device shown;

[0031] Figure 4 yes Figure 1 Top view of the device shown;

[0032] Figure 5 This is a perspective view of the equipment base, integrated tank, activation tank, control box, hanger assembly and filter box in an embodiment of the present invention.

[0033] Figure 6 yes Figure 5 A front view of the device shown;

[0034] Figure 7 This is a perspective view of the movable frame assembly, adjustable clamp, and drive assembly in an embodiment of the present invention.

[0035] Figure 8 yes Figure 7 Side view of the device shown;

[0036] Figure 9 yes Figure 7 Top view of the device shown;

[0037] Figure 10 This is a perspective view of the combination of the cap, filter frame, and filter screen in an embodiment of the present invention;

[0038] Figure 11 yes Figure 10 A front view of the device shown;

[0039] Figure 12 This is a perspective view of the modular temperature equalization component in an embodiment of the present invention;

[0040] Figure 13 yes Figure 12 A front view of the device shown;

[0041] Figure 14 yes Figure 12 Top view of the device shown.

[0042] In the diagram: 1. Equipment base; 2. Integrated tank; 21. Pickling tank; 211. Top shell; 212. Bottom shell; 213. Drain shell; 214. Drain trough; 215. Placement plate; 216. Support bar; 22. Cleaning tank; 221. Outer tank shell; 222. Bottom spray plate; 223. Spray bend; 224. Drain pipe; 225. Angled nozzle; 226. Lower nozzle; 23. Insulation plate; 3. Activation tank; 4. Control box; 41. Longitudinal tube shell; 42. Positioning bracket; 421. Auxiliary bearing; 5. Hanger assembly; 51. Rotating rod section; 52. Horizontal plate seat; 53. Hanger seat; 531. Driven gear; 54. Drive Motor; 541, Drive gear; 6, Movable frame assembly; 61, Top seat; 62, Longitudinal slide; 621, Electric cylinder; 63, Movable seat; 631, Guide slide; 7, Adjustable clamp; 71, Sliding frame; 72, Connecting frame; 73, Electric gripper; 8, Drive assembly; 81, Control motor; 82, Threaded rod; 9, Filter assembly; 91, Filter box; 911, Extended outer shell; 92, Cover; 93, Filter frame; 931, Filter screen; 94, Return pump; 10, Modular temperature equalization assembly; 101, Base frame; 102, Electric heating element; 103, Vertical frame; 104, Stirring motor; 105, Stirring rod. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0049] Example 1

[0050] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A pickling and activation apparatus for nickel plating on a high-voltage IGBT molybdenum-copper substrate includes a base 1. A connected tank 2 is fixedly installed on the upper surface of the base 1. The connected tank 2 includes a pickling tank 21 and a cleaning tank 22. The pickling tank 21 serves as the main reaction vessel for pickling and activation, immersing the molybdenum-copper substrate in the pickling solution to remove the oxide layer, oil, and impurities from the substrate surface, providing a clean and activated surface for subsequent nickel plating. After pickling, the cleaning tank 22 is used to clean the residual pickling solution from the surface of the molybdenum-copper substrate, preventing acid from being carried into the subsequent nickel plating process and affecting the nickel plating quality. A heat insulation plate 23 is provided between the pickling tank 21 and the cleaning tank 22, and both the pickling tank 21 and the cleaning tank 22 are fixedly connected to the heat insulation plate 23. An activation tank 3 is fixedly installed on the front end of the cleaning tank 22. After pickling and cleaning, the activation tank 3 activates the molybdenum-copper substrate, further improving the activity of the substrate surface and enhancing the adhesion between the nickel plating layer and the substrate. The activation solution typically uses a solution containing fluorides or other activators. The filtration system filters the pickling solution to remove impurities and suspended solids, ensuring the cleanliness of the solution, extending its service life, and improving the pickling effect.

[0051] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A control box 4 is fixedly installed at the connection point of the pickling tank 21, cleaning tank 22, and activation tank 3. A hanger assembly 5 is rotatably mounted on the upper surface of the control box 4, and a rotary cylinder for driving the hanger assembly 5 is fixedly installed in the control box 4. A movable frame assembly 6 is fixedly installed at the head of the hanger assembly 5, and two sets of adjustable clamps 7 are installed at the lower end of the movable frame assembly 6. A drive assembly 8 for moving the adjustable clamps 7 is installed on the movable frame assembly 6. A filter assembly 9 connected to the pickling tank 21 is also installed on the equipment base 1. The equipment base 1 provides a stable support foundation for the entire device, ensuring the stability of the device during operation. The integrated tank 2 integrates the pickling tank 21 and cleaning tank 22. The insulation plate 23 effectively reduces the temperature mutual influence between the pickling tank 21 and cleaning tank 22, ensuring their respective working temperature environments. The activation tank 3 provides a place for the activation treatment of the molybdenum-copper substrate. The control box 4 is used to control the rotation of the hanger assembly 5, realizing the transfer of the molybdenum-copper substrate between different tanks. The combination of the hanger assembly 5, the movable frame assembly 6, the adjustable clamp 7, and the drive assembly 8 allows for flexible clamping and movement of the molybdenum-copper substrate, facilitating a series of processing operations such as pickling, cleaning, and activation. The filter assembly 9 is connected to the pickling tank 21 and can filter the pickling solution, ensuring its cleanliness, improving the pickling effect, and extending the service life of the pickling solution. The high-voltage IGBT molybdenum-copper substrate is held by the electric gripper 73 of the adjustable clamp 7 and moved sequentially in the pickling tank 21, the cleaning tank 22, and the activation tank 3. In the pickling tank 21, the molybdenum-copper substrate is placed on the support bar 216 of the placement plate 215 for pickling. The electric gripper 73 changes the placement position multiple times to avoid the support bar 216 affecting the pickling effect of the molybdenum-copper substrate. In the cleaning tank 22, clean water is first injected into the cleaning tank 22 for soaking. The electric gripper 73 drives the molybdenum-copper substrate to move continuously to achieve a better cleaning effect. After soaking, the clean water in the cleaning tank 22 is drained. Then, the electric gripper 73 holds the molybdenum-copper substrate between the angled nozzle 225 and the lower nozzle 226 for rinsing. During the rinsing process, different electric grippers 73 are constantly changed to hold the substrate at different positions to avoid the electric gripper 73 blocking the molybdenum-copper substrate and causing rinsing blind spots. Finally, it is moved to the activation tank 3 for processing, and the clamping position also needs to be changed continuously.

[0052] Reference Figure 2 , Figure 3 and Figure 4The pickling tank 21 includes a top shell 211, a bottom shell 212, and a drain shell 213 connected to the filter assembly 9. The top shell 211 is fixedly installed on the upper surface of the bottom shell 212, and the bottom surface of the top shell 211 has several sets of drain channels 214 with control valves. The drain shell 213 is fixedly installed between the top shell 211 and the bottom shell 212, and the upper end of the drain shell 213 is connected to the drain channel 214. The combined design of the top shell 211, the bottom shell 212, and the drain shell 213 makes the flow and discharge of the pickling solution more reasonable. The connection between the drain channel 214 and the drain shell 213 facilitates the guidance of the pickling solution to the filter assembly 9 for filtration. At the same time, the drain channel 214 with control valves can control the discharge speed and flow rate of the pickling solution as needed, which facilitates precise control of the pickling process. An inclined placement plate 215 is installed inside the top shell 211, and is fixedly connected to the top shell 211. Several sets of support bars 216 are evenly installed on the upper surface of the placement plate 215, and are also fixedly connected to the placement plate 215. A pH display screen and a temperature display screen are also installed on the upper surface of the top shell 211. The inclined placement plate 215 facilitates the flow of pickling solution within the tank, allowing the molybdenum-copper substrate to fully contact the pickling solution and improve the pickling effect. The support bars 216 support the molybdenum-copper substrate, preventing direct large-area contact between the substrate and the placement plate 215, ensuring that the pickling solution can fully act on the substrate surface. The pH and temperature display screens can monitor the pH and temperature of the pickling solution in real time, allowing operators to adjust the pickling process parameters promptly based on the displayed data, ensuring the stability of the pickling effect.

[0053] Reference Figure 4 and Figure 5 The cleaning tank 22 includes an outer shell 221, a bottom spray plate 222, and several sets of spray bends 223. The bottom spray plate 222 is fixedly inclined in the outer shell 221. The spray bends 223 are evenly arranged above the bottom spray plate 222 and are fixedly connected to the outer shell 221. A drain pipe 224 with a control valve is fixedly installed in the outer shell 221. Several sets of angled nozzles 225 are evenly fixedly installed on the bottom spray plate 222. A lower nozzle 226 is also sealed and installed on the spray bends 223. A spray pump for supplying liquid to the angled nozzles 225 and the lower nozzles 226 is also fixedly installed in the outer shell 221. The outer shell 221, as the main body of the cleaning tank 22, provides space for accommodating the cleaning liquid and the molybdenum-copper substrate. The angled nozzles 225 and lower nozzles 226 on the bottom spray plate 222 and the spray bend 223 can rinse the molybdenum-copper substrate from different angles, improving the comprehensiveness and thoroughness of the cleaning. The drain pipe 224 can conveniently discharge the wastewater after cleaning, and the spray pump provides sufficient pressure to the nozzles to ensure the cleaning effect.

[0054] Reference Figure 5The control box 4 includes a longitudinal tube shell 41 and a positioning bracket 42 for mounting the hanger assembly 5. The positioning bracket 42 is fixedly mounted on the upper end face of the longitudinal tube shell 41. An auxiliary bearing 421 is also mounted on the head of the positioning bracket 42. The outer ring of the auxiliary bearing 421 engages and is fixed with the positioning bracket 42, and the inner ring of the auxiliary bearing 421 is sleeved and fixed on the hanger assembly 5. The longitudinal tube shell 41 provides support and guidance for the rotation of the hanger assembly 5. The cooperation between the positioning bracket 42 and the auxiliary bearing 421 makes the rotation of the hanger assembly 5 more stable and smooth, reduces friction and shaking during rotation, and improves the operational stability and reliability of the device.

[0055] Reference Figure 5 and Figure 6 The hanger assembly 5 includes a rotating rod portion 51, a horizontal plate seat 52, and a hanger rod seat 53 for mounting the movable frame assembly 6. The lower end of the rotating rod portion 51 is rotatably mounted on the longitudinal tube shell 41. One end of the horizontal plate seat 52 is fixedly mounted on the head of the rotating rod portion 51, and the hanger rod seat 53 is rotatably mounted on the other end of the horizontal plate seat 52. A driven gear 531 is fixedly fitted onto the head of the hanger rod seat 53. A drive motor 54 is also fixedly mounted on the horizontal plate seat 52, and a drive gear 541 meshing with the driven gear 531 is fixedly mounted on the output shaft of the drive motor 54. The rotating rod portion 51 rotates under the drive of a rotary cylinder, realizing the position transfer of the molybdenum copper substrate between different tanks. The combination of the horizontal plate seat 52 and the hanger rod seat 53 expands the range of motion of the hanger assembly 5. The drive motor 54 drives the hanger rod seat 53 to rotate through the meshing of the drive gear 541 and the driven gear 531, further adjusting the angle of the movable frame assembly 6, so that the molybdenum copper substrate can accurately enter different tanks for processing.

[0056] Reference Figure 7 , Figure 8 and Figure 9 The movable frame assembly 6 includes a top seat 61, a longitudinal slide 62, and a movable base 63 for sliding installation of the adjustable clamp 7. The top seat 61 is fixedly connected to the lower end of the hanger base 53. The longitudinal slide 62 is fixedly installed on the lower end face of the top seat 61. The movable base 63 is slidably installed on the longitudinal slide 62, and an electric cylinder 621 for driving the movable base 63 to rise and fall is also fixedly installed on the longitudinal slide 62. The movable base 63 has a guide groove 631 for sliding installation of the adjustable clamp 7. The top seat 61 connects the movable frame assembly 6 to the hanger base 53. The cooperation between the longitudinal slide 62 and the movable base 63 allows the movable base 63 to slide up and down on the longitudinal slide 62, realizing the lifting and lowering movement of the adjustable clamp 7. The electric cylinder 621 provides power for the lifting and lowering of the movable base 63, facilitating the insertion or removal of the molybdenum copper substrate into or out of the slot. The guide groove 631 provides guidance for the sliding of the adjustable clamp 7, ensuring more accurate and stable movement of the adjustable clamp 7.

[0057] Reference Figure 7 , Figure 8 and Figure 9 The adjustable clamp 7 includes a sliding frame 71, a connecting frame 72, and an electric gripper 73. The upper end of the sliding frame 71 is slidably mounted in the guide groove 631, the connecting frame 72 is fixedly mounted on the lower end of the sliding frame 71, and the electric gripper 73 is fixedly mounted on both ends of the connecting frame 72. The drive assembly 8 includes a control motor 81 and a threaded rod 82. The control motor 81 is fixedly mounted on the movable seat 63, one end of the threaded rod 82 is fixedly connected to the output shaft of the control motor 81, and the other end of the threaded rod 82 extends into the guide groove 631. The sliding frame 71 has a threaded hole that mates with the threaded rod 82. The electric gripper 73 of the adjustable clamp 7 can firmly clamp the molybdenum copper substrate, and the design of the sliding frame 71 and the connecting frame 72 allows the adjustable clamp 7 to slide on the movable seat 63. The control motor 81 of the drive component 8 drives the sliding frame 71 to move in the guide groove 631 through the threaded rod 82, thereby realizing the adjustment of the position of the adjustable clamp 7. In this way, when one set is clamped, the other set can be removed from the molybdenum copper substrate, which makes it convenient to continuously change different clamping positions and avoid blind spots during the processing of molybdenum copper substrate.

[0058] Reference Figure 6 , Figure 10 and Figure 11 The filter assembly 9 includes a filter box 91, a cover 92, and a filter frame 93. The filter box 91 is fixedly installed on the equipment base 1 and is sealed to the drain shell 213. The cover 92 is detachably installed on the head of the filter box 91. The filter frame 93 is fixedly installed on the lower end face of the cover 92 and several sets of filter screens 931 are installed on the filter frame 93. An extension shell 911 is also fixedly installed on the outer side of the filter box 91. A return pump 94 is fixedly installed in the extension shell 911. The suction port of the return pump 94 is connected to the bottom inner side of the filter box 91, and the discharge port of the return pump 94 is connected to the top shell 211 through a drain pipe. The structure of the filter assembly 9 ensures that after pickling, the pickling solution can be introduced into the filter box 91 through the drain shell 213. After being filtered by the multi-layer filter screen 931 on the filter frame 93 in the filter box 91, it is discharged back into the pickling tank 21 through the return pump 94. This ensures the cleanliness of the pickling solution and increases the pickling effect. At the same time, by installing the filter screen 931 on the filter frame 93, and by removing it as a whole through the cover 92 when cleaning is required, it is convenient to replace and clean the filter screen 931.

[0059] Example 2

[0060] Reference Figure 1 , Figure 12 , Figure 13 and Figure 14A high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation device includes a base 1. A connected tank 2 is fixedly installed on the upper surface of the base 1. The connected tank 2 includes a pickling tank 21 and a cleaning tank 22. The pickling tank 21 serves as the main reaction vessel for pickling and activation. Modular temperature equalization components 10 are fixedly installed in both the pickling tank 21 and the activation tank 3. The modular temperature equalization component 10 includes a base frame 101, an electric heating tube 102, a vertical frame 103, and a stirring motor 104. The electric heating tube 102 is fixedly installed on both sides of the base frame 101. The vertical frame 103 is vertically fixed on both sides of the upper surface of the base frame 101. The stirring motor 104 is fixedly installed at the head of the vertical frame 103, and a stirring rod 105 is fixedly installed on the output shaft of the stirring motor 104. The modular temperature equalization component 10 facilitates overall installation and disassembly, and can heat and stir the solutions in the pickling tank 21 and the activation tank 3 during use. The electric heating element 102 can heat the solution to a suitable temperature, and the stirring motor 104 drives the stirring device to stir the solution, so that the solution temperature is evenly distributed, ensuring that the pickling and activation processes are carried out in a stable temperature environment, thereby improving the consistency and stability of the processing effect.

[0061] The working principle is as follows:

[0062] Installation and Commissioning: First, install the equipment base 1 in a suitable working position, ensuring it is stable and secure. Then, install the integrated tank 2 (including pickling tank 21 and cleaning tank 22), activation tank 3, control box 4, hanger assembly 5, movable frame assembly 6, adjustable clamp 7, drive assembly 8, and filter assembly 9 in sequence. During installation, ensure that the connections between all components are tight and accurate. For example, the rotation of the hanger assembly 5 on the control box 4 should be smooth, and the sliding of the adjustable clamp 7 on the movable frame assembly 6 should be flexible. After installation, commission the device, checking the operation of the rotary cylinder, drive motor 54, electric cylinder 621, control motor 81, spray pump, and other power components to ensure they are functioning properly. Simultaneously, check the accuracy of the pH display screen, temperature display screen, and other monitoring equipment.

[0063] Pickling process: The high-voltage IGBT molybdenum-copper substrate is placed between the electric grippers 73 of the adjustable clamp 7. The position of the adjustable clamp 7 is adjusted by the drive assembly 8 to ensure that the electric grippers 73 firmly hold the substrate. The rotary cylinder is activated to drive the hanger assembly 5 to rotate, moving the substrate above the pickling tank 21. The electric cylinder 621 of the movable frame assembly 6 lowers the substrate onto the placement plate 215 inside the pickling tank 21 and places it on the support bar 216. At this time, the pickling solution pickles the substrate surface to remove the oxide layer, oil, and impurities. During the pickling process, the operator can adjust the parameters of the pickling solution in a timely manner according to the data on the pH and temperature display screens. At the same time, the placement position of the substrate is changed multiple times by the electric grippers 73 to prevent the support bar 216 from affecting the pickling effect. The filter assembly 9 continuously filters the pickling solution to ensure its cleanliness.

[0064] Cleaning Process: After pickling, the substrate is lifted above the pickling tank 21 by the electric cylinder 621 of the movable frame assembly 6. Then, the rotary cylinder is activated to transfer the substrate above the cleaning tank 22. The substrate is then lowered into the cleaning tank 22 again by the electric cylinder 621, and clean water is injected into the cleaning tank 22 for soaking. During the soaking process, the electric gripper 73 continuously moves the substrate to improve the cleaning effect. After soaking, the control valve of the drain pipe 224 is opened to discharge the wastewater. Next, the spray pump is started, and the substrate is rinsed through the angled nozzle 225 and the lower nozzle 226. During the rinsing process, different electric grippers 73 are continuously changed to hold different positions to avoid blind spots in the rinsing.

[0065] Activation process: After cleaning, the substrate is lifted above the cleaning tank 22, and then transferred to the activation tank 3 using a rotary cylinder. The substrate is then lowered into the activation solution in the activation tank 3 for activation treatment, further enhancing the activity of the substrate surface. During the activation process, the clamping position of the electric gripper 73 needs to be constantly changed to ensure the uniformity of the activation effect.

[0066] Subsequent processing: After activation, the substrate is removed from activation tank 3 for subsequent processes such as nickel plating. Simultaneously, the device is regularly maintained and serviced, with checks on the wear of each component and timely replacement of damaged parts to ensure long-term stable operation.

[0067] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation apparatus, comprising an equipment base (1), characterized in that: A connecting tank (2) is fixedly installed on the upper surface of the equipment base (1). The connecting tank (2) includes an acid pickling tank (21) and a cleaning tank (22). A heat insulation plate (23) is provided between the acid pickling tank (21) and the cleaning tank (22), and both the acid pickling tank (21) and the cleaning tank (22) are fixedly connected to the heat insulation plate (23). An activation tank (3) is fixedly installed on the front end of the cleaning tank (22). A control box is fixedly installed at the connection between the acid pickling tank (21), the cleaning tank (22), and the activation tank (3). (4) A hanger assembly (5) is rotatably installed on the upper surface of the control box (4), and a rotary cylinder for driving the hanger assembly (5) to rotate is fixedly installed in the control box (4). A movable frame assembly (6) is fixedly installed at the head of the hanger assembly (5). Two sets of adjustable clamps (7) are installed at the lower end of the movable frame assembly (6), and a drive assembly (8) for driving the adjustable clamps (7) to move is installed on the movable frame assembly (6). A filter assembly (9) connected to the pickling tank (21) is also installed on the equipment base (1).

2. The high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation device according to claim 1, characterized in that: The pickling tank (21) includes a top shell (211), a bottom shell (212), and a drain shell (213) connected to the filter assembly (9). The top shell (211) is fixedly installed on the upper end face of the bottom shell (212), and the bottom surface of the top shell (211) is provided with several sets of drain channels (214) with control valves. The drain shell (213) is fixedly installed between the top shell (211) and the bottom shell (212), and the upper end of the drain shell (213) is connected to the drain channel (214).

3. The high-voltage IGBT molybdenum-copper substrate nickel plating acid pickling and activation device according to claim 2, characterized in that: An inclined placement plate (215) is installed inside the top shell (211). The placement plate (215) is fixedly connected to the top shell (211). Several sets of support bars (216) are evenly installed on the upper surface of the placement plate (215). The support bars (216) are fixedly connected to the placement plate (215). A pH value display screen and a temperature display screen are also installed on the upper surface of the top shell (211).

4. The high-voltage IGBT molybdenum-copper substrate nickel plating acid pickling and activation device according to claim 3, characterized in that: The cleaning tank (22) includes an outer tank shell (221), a bottom spray plate (222), and several sets of spray bends (223). The bottom spray plate (222) is fixedly inclined in the outer tank shell (221). The spray bends (223) are evenly arranged above the bottom spray plate (222) and are fixedly connected to the outer tank shell (221). A drain pipe (224) with a control valve is fixedly installed in the outer tank shell (221). Several sets of angled nozzles (225) are evenly fixedly installed on the bottom spray plate (222). A lower nozzle (226) is also sealed on the spray bend (223). A spray pump for supplying liquid to the angled nozzles (225) and the lower nozzles (226) is also fixedly installed in the outer tank shell (221).

5. The high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation device according to claim 4, characterized in that: The control box (4) includes a longitudinal tube shell (41) and a positioning bracket (42) for mounting the hanger assembly (5). The positioning bracket (42) is fixedly installed on the upper end face of the longitudinal tube shell (41). An auxiliary bearing (421) is also installed on the head of the positioning bracket (42). The outer ring of the auxiliary bearing (421) is engaged and fixed with the positioning bracket (42), and the inner ring of the auxiliary bearing (421) is sleeved and fixed on the hanger assembly (5).

6. The high-voltage IGBT molybdenum-copper substrate nickel plating acid pickling and activation device according to claim 5, characterized in that: The hanger assembly (5) includes a rotating rod part (51), a horizontal plate seat (52), and a hanger seat (53) for mounting the movable frame assembly (6). The lower end of the rotating rod part (51) is rotatably mounted on the longitudinal tube shell (41). One end of the horizontal plate seat (52) is fixedly mounted on the head of the rotating rod part (51). The hanger seat (53) is rotatably mounted on the other end of the horizontal plate seat (52). A driven gear (531) is sleeved and fixedly mounted on the head of the hanger seat (53). A drive motor (54) is also fixedly mounted on the horizontal plate seat (52). A drive gear (541) that meshes with the driven gear (531) is fixedly mounted on the output shaft of the drive motor (54).

7. The high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation apparatus according to claim 6, characterized in that: The movable frame assembly (6) includes a top seat (61), a longitudinal slide (62), and a movable seat (63) for sliding installation of an adjustable clamp (7). The top seat (61) is fixedly connected to the lower end of the boom seat (53). The longitudinal slide (62) is fixedly installed on the lower end face of the top seat (61). The movable seat (63) is slidably installed on the longitudinal slide (62). An electric cylinder (621) for driving the movable seat (63) to rise and fall is also fixedly installed on the longitudinal slide (62). A guide groove (631) for sliding installation of the adjustable clamp (7) is provided on the movable seat (63).

8. The high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation device according to claim 7, characterized in that: The adjustable clamp (7) includes a sliding frame (71), a connecting frame (72), and an electric gripper (73). The upper end of the sliding frame (71) is slidably installed in the guide groove (631). The connecting frame (72) is fixedly installed at the lower end of the sliding frame (71). The electric gripper (73) is fixedly installed at both ends of the connecting frame (72). The drive assembly (8) includes a control motor (81) and a threaded rod (82). The control motor (81) is fixedly installed on the movable seat (63). One end of the threaded rod (82) is fixedly connected to the output shaft of the control motor (81), and the other end of the threaded rod (82) extends into the guide groove (631). The sliding frame (71) has a threaded hole that mates with the threaded rod (82).

9. The high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation device according to claim 8, characterized in that: The filter assembly (9) includes a filter box (91), a cover (92), and a filter frame (93). The filter box (91) is fixedly installed on the equipment base (1) and is sealed to the drain shell (213). The cover (92) is detachably installed on the head of the filter box (91). The filter frame (93) is fixedly installed on the lower end face of the cover (92) and several sets of filter screens (931) are installed on the filter frame (93). An expansion shell (911) is also fixedly installed on the outer side of the filter box (91). A return pump (94) is fixedly installed in the expansion shell (911). The suction port of the return pump (94) is connected to the bottom inner side of the filter box (91), and the pressure outlet of the return pump (94) is connected to the top shell (211) through a drain pipe.

10. A high-voltage IGBT molybdenum-copper substrate nickel plating pickling and activation apparatus according to any one of claims 1-9, characterized in that: Modular temperature equalization components (10) are fixedly installed in both the pickling tank (21) and the activation tank (3). The modular temperature equalization components (10) include a bottom frame (101), an electric heating tube (102), a vertical frame (103) and a stirring motor (104). The electric heating tube (102) is fixedly installed on both sides of the bottom frame (101). The vertical frame (103) is vertically fixed on both sides of the upper end face of the bottom frame (101). The stirring motor (104) is fixedly installed at the head of the vertical frame (103), and a stirring rod (105) is fixedly installed on the output shaft of the stirring motor (104).

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