A kind of electroplating equipment applied to the precision electroplating processing of aviation parts

Abstract

This invention relates to the field of electroplating equipment technology, and in particular to an electroplating device for precision electroplating of aerospace parts. The device includes a base plate and a sealing top plate. An electroplating tank is fixedly connected to the front side of the top of the base plate. Two symmetrical crossbars are fixedly connected between the left and right side walls inside the electroplating tank. Multiple linearly arrayed metal baskets are hung at the bottom of each crossbar. A locking mechanism is used to lock the sealing base plate and the sealing top plate together, thereby sealing the inside of the conical cylinder and preventing the inner surface of the conical cylinder from being plated with precious metals, reducing waste of precious metals and lowering electroplating costs. An electroplating adjustment mechanism ensures that the inner wall of the conical cylinder can be uniformly and periodically electrically connected to the electrodes, resulting in relatively similar attraction of metal ions at different locations, effectively reducing the thickness error of the metal coating on the outer surface of the conical cylinder.

Description

Technical Field

[0001] This invention relates to the field of electroplating equipment, and more particularly to an electroplating equipment for precision electroplating of aerospace parts. Background Technology

[0002] Electroplating is the process of depositing a thin layer of another metal or alloy onto the surface of certain metals using the principle of electrolysis. It is a process that uses electrolysis to attach a metal film to the surface of metal or other material parts, thereby preventing metal oxidation (such as rust), improving wear resistance, conductivity, reflectivity, corrosion resistance (such as copper sulfate), and enhancing aesthetics.

[0003] The prior art discloses some patent documents related to electroplating equipment. Chinese patent application number CN202110794531.2 discloses a high-precision environmentally friendly electroplating equipment and its continuous electroplating process, including an internal electroplating chamber, an external support chamber, a support column, and a rotary suction mechanism.

[0004] In existing technologies, when electroplating some conical or cylindrical aerospace components, the outer surface is often the working surface and requires electroplating. However, current techniques involve immersing the entire component in an electrolyte solution for electroplating, resulting in the coating of all surfaces with a metal layer. This leads to additional waste of precious metals, increasing the cost of electroplating. Furthermore, the special working environment of aerospace components necessitates strict tolerances for the thickness of the electroplated metal layer. During electroplating, the area where the component contacts the electrode exhibits a stronger attraction to metal ions, which weakens with increasing distance from the electrode contact point. Since the position of the electrode contact point generally remains constant, this results in significant errors in the metal coating, failing to meet the operational requirements of aerospace components. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose an electroplating equipment for precision electroplating of aerospace parts.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an electroplating equipment for precision electroplating of aerospace parts, comprising a base plate and a sealing top plate. An electroplating tank is fixedly connected to the front side of the top of the base plate. Two symmetrical crossbars are fixedly connected between the left and right side walls inside the electroplating tank. Multiple linearly arrayed metal baskets are hung at the bottom of each of the two crossbars. The metal baskets contain metal for electroplating. Two symmetrical sliding columns are fixedly connected to the bottom surface inside the electroplating tank. A sealing bottom plate is slidably connected to the outer walls of the two sliding columns. A snap-fit ​​positioning mechanism is connected between the two sliding columns and the sealing bottom plate. The snap-fit ​​positioning mechanism is used to fix the vertical position of the sealing bottom plate. The top surface of the sealing bottom plate supports a conical cylinder. The sealing top plate is placed on the top surface of the conical cylinder. A docking snap-fit ​​mechanism is connected between the sealing top plate and the sealing bottom plate. The docking snap-fit ​​mechanism is used to snap-fit ​​and fix the sealing top plate and the sealing bottom plate to seal and clamp the conical cylinder.

[0007] An L-shaped mounting bracket is fixedly connected to the rear side of the top of the base plate. An electroplating adjustment mechanism is connected between the L-shaped mounting bracket and the sealed base plate. The electroplating adjustment mechanism is used to drive the clamped conical cylinder into the electroplating bath for uniform electroplating.

[0008] Preferably, the snap-fit ​​positioning mechanism includes two first rotating pins, which are rotatably connected to the tops of the two sliding columns respectively. Two snap-fit ​​plates arranged in a circular array are fixedly connected to the outer walls of the two first rotating pins. An L-shaped rod is fixedly connected to the bottom of all the snap-fit ​​plates. The two L-shaped rods on the outer ring of the same first rotating pin are symmetrical. After the L-shaped rod rotates around the first rotating pin, the top surface of its long rod contacts the bottom surface of the sealing base plate.

[0009] Preferably, the docking and snapping mechanism includes a sleeve fixedly connected to the middle of the top of the sealing base plate. The top of the sleeve has a first docking shaft section, and four snapping blocks arranged in a circumferential array are fixedly connected to the top of the first docking shaft section. All the snapping blocks have snapping grooves on their sidewalls and pushing inclined surfaces on their tops. The bottom of the sealing top plate has a second docking shaft section, and the bottom of the second docking shaft section has four insertion grooves arranged in a circumferential array. The snapping blocks are slidably connected in the insertion grooves. Each of the four insertion slots has an arc-shaped groove on its sidewall, and an arc-shaped sliding plate is slidably connected to each of the four arc-shaped grooves. One end of each of the four arc-shaped sliding plates is respectively engaged in the adjacent engagement slot, and the other end of each of the four arc-shaped sliding plates is fixedly connected to the inner side of the adjacent arc-shaped groove with an arc-shaped spring. The top surface of the sealing top plate has an annular groove, which is connected to the four arc-shaped grooves. The top of each of the four arc-shaped sliding plates is fixedly connected to an annular plate through a connecting plate, and the annular plate is rotatably connected in the annular groove.

[0010] Preferably, the electroplating adjustment mechanism includes a first rotating shaft, a through-hole, and a rotating groove. The first rotating shaft is rotatably connected to the middle of the top of the sealing base plate. The outer wall of the first rotating shaft contacts the inner wall of the sleeve. The through-hole is circumferentially arrayed and opened through the bottom of the side wall of the sleeve. Four circumferentially arrayed connecting blocks are fixedly connected to the bottom of the side wall of the first rotating shaft. After all the connecting blocks pass through the adjacent through-holes, a rectangular frame is fixedly connected. A clearance contact mechanism is connected between the rectangular frame and the inner wall of the conical cylinder. The clearance contact mechanism is used to adjust the inner wall of the conical cylinder to make uniform contact with the electrode during electroplating. The rotating groove is opened through the middle of the top of the sealing top plate. A second rotating shaft is rotatably connected in the rotating groove. The bottom of the second rotating shaft is engaged with the top of the first rotating shaft. The top of the second rotating shaft extends out of the rotating groove and is connected to the L-shaped mounting bracket by a driving mechanism. The driving mechanism is used to drive the second rotating shaft to move up and down and rotate.

[0011] Preferably, the top of the first rotating shaft is provided with a cross groove, and the bottom of the second rotating shaft is fixedly connected with a cross pin, which is inserted into the cross groove.

[0012] Preferably, the clearance contact mechanism includes a sliding block, the lower end of which is slidably connected to the inside of the rectangular frame. A spring is fixedly connected between the end face of the sliding block near the connecting block and the end face of the inside of the rectangular frame near the connecting block. Mounting plates are symmetrically fixed to the top of the sliding block. A second rotating pin is rotatably connected between the two mounting plates. One end of the second rotating pin passes through one of the mounting plates and extends outward. A torsion spring is fixedly connected between the outer wall of the second rotating pin and the side wall of the mounting plate through which it passes. A conductive plate is fixedly connected to the outer wall of the rotating pin and is electrically connected to a power source.

[0013] Preferably, the driving mechanism includes a turntable, which is rotatably mounted on the top surface of the L-shaped mounting bracket. A first cylinder is fixedly connected to the top of the turntable. The telescopic rod of the first cylinder passes through the top of the turntable and the L-shaped mounting bracket and is fixedly connected to the top of the second rotating shaft. A rotary driving mechanism is connected between the top of the turntable and the top of the L-shaped mounting bracket, and the rotary driving mechanism is used to drive the turntable to rotate.

[0014] Preferably, the rotary drive mechanism includes a push plate and a second cylinder. The right end of the push plate is fixedly connected to the left side of the top of the turntable. A T-shaped groove is provided in the middle of the front side of the push plate. The second cylinder is fixedly connected to the left side of the top of the L-shaped mounting bracket. A T-shaped pin is fixedly connected to the telescopic rod of the second cylinder. The cross-section of the T-shaped pin is circular, and the T-shaped pin is slidably inserted into the T-shaped groove.

[0015] Preferably, a plurality of linearly arrayed rubber sealing rings are embedded on the top surface of the sealing base plate and the bottom surface of the sealing top plate, and the top of the sealing base plate has an inclined surface that matches the inner wall of the conical cylinder.

[0016] Preferably, the top of the electroplating tank has two symmetrical cover plates slidably connected. A rack is fixedly connected to the front of each of the two cover plates. Two motors are fixedly connected to the front of the electroplating tank. Gears are fixedly connected to the output shafts of the two motors. The two gears mesh with the adjacent racks respectively. A semi-circular groove is opened through the top of each of the two cover plates on the side that is close to each other. After the two semi-circular grooves are close to each other, they form a complete circular groove and contact the outer wall of the telescopic end of the first cylinder. An air purification device that connects the electroplating tank to the outside air is connected to the left and right side plates of the electroplating tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting up a docking and snapping mechanism, the sealing base plate and the sealing top plate are snapped together and fixed, thereby achieving a seal inside the conical cylinder. This prevents the inner surface of the conical cylinder from being plated with precious metals, reducing the waste of precious metals and lowering electroplating costs.

[0019] Second, by setting up an electroplating adjustment mechanism, the inner wall of the conical cylinder can be electrically connected to the electrode uniformly and periodically. As a result, the positions of the contact points between the various parts of the conical cylinder and the electrode are relatively close, and the attraction of metal ions to each part is relatively similar, which effectively reduces the thickness error of the metal coating on the outer surface of the conical cylinder.

[0020] Third, by periodically and electrically connecting the electrode to different positions on the inner wall of the conical cylinder through the contact mechanism, the electrode can periodically contact the inner wall of the conical cylinder, which is conducive to making the electrode uniformly contact the inner wall of the conical cylinder, and thus promoting uniform electroplating on the surface of the conical cylinder during electroplating. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the electroplating tank of the present invention;

[0023] Figure 3 This is a top view of the internal structure of the electroplating tank of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure of the sealing base plate of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle;

[0026] Figure 6 This is a top view of the structure of the sealing base plate connection of the present invention;

[0027] Figure 7 For the present invention Figure 6 Sectional view of section AA;

[0028] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point B in the middle;

[0029] Figure 9 This is a schematic diagram of the docking and snapping mechanism of the present invention (partial cross-section of the connection between the first docking shaft segment and the second docking shaft segment is shown);

[0030] Figure 10 For the present invention Figure 9 Enlarged view of the structure at point C;

[0031] Figure 11 For the present invention Figure 10 Enlarged view of the structure at point D;

[0032] Figure 12 This is a schematic diagram of the rotary drive mechanism of the present invention;

[0033] Figure 13 This is a schematic diagram of the docking and snapping mechanism of the present invention after it has been exploded (partial cross-section of the connection between the first docking shaft segment and the second docking shaft segment is shown).

[0034] Figure 14 For the present invention Figure 13 Enlarged view of the structure at point E in the middle.

[0035] In the diagram: 1. Base plate; 2. Electroplating tank; 3. Crossbar; 4. Metal basket; 5. Sealing base plate; 501. Inclined surface; 6. Conical cylinder; 7. L-shaped mounting bracket; 8. Sealing top plate; 801. Second docking shaft section; 9. Sliding column; 10. First rotating pin; 11. Snap-fit ​​plate; 12. L-shaped rod; 13. Sleeve; 1301. First docking shaft section; 14. Snap-fit ​​block; 1401. Snap-fit ​​groove; 1402. Pushing inclined surface; 15. Insertion groove; 16. Arc groove; 17. Arc sliding plate; 18. Arc spring; 19. Annular groove; 20. Annular plate; 21. First rotating shaft; 2101, cross groove; 22, through port; 23, connecting block; 24, rectangular frame; 25, rotating groove; 26, second rotating shaft; 2601, cross pin; 27, sliding block; 28, mounting plate; 29, second rotating pin; 30, conductive plate; 31, turntable; 32, first cylinder; 33, push plate; 34, second cylinder; 35, T-slot; 36, T-pin; 37, rubber sealing ring; 38, cover plate; 39, rack; 40, motor; 41, gear; 42, semi-circular groove; 43, purification device; 44, spring; 45, torsion spring. Detailed Implementation

[0036] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0037] like Figures 1 to 14The electroplating equipment shown is used for precision electroplating of aerospace parts. It includes a base plate 1 and a sealing top plate 8. An electroplating tank 2 is fixedly connected to the front side of the top of the base plate 1. Two symmetrical crossbars 3 are fixedly connected between the left and right side walls inside the electroplating tank 2. Multiple linearly arrayed metal baskets 4 are hung at the bottom of the two crossbars 3. The metal baskets 4 are filled with metal for electroplating. Two symmetrical sliding columns 9 are fixedly connected to the bottom surface inside the electroplating tank 2. A sealing base plate 5 is slidably connected to the outer wall of the two sliding columns 9. A snap-fit ​​positioning mechanism is connected between the two sliding columns 9 and the sealing base plate 5. The snap-fit ​​positioning mechanism is used to fix the vertical position of the sealing base plate 5. The top surface of the sealing base plate 5 supports a conical cylinder 6. The sealing top plate 8 is placed on the top surface of the conical cylinder 6. A docking snap-fit ​​mechanism is connected between the sealing top plate 8 and the sealing base plate 5. The docking snap-fit ​​mechanism is used to snap-fit ​​and fix the sealing top plate 8 and the sealing base plate 5 to seal and clamp the conical cylinder 6.

[0038] An L-shaped mounting bracket 7 is fixedly connected to the rear side of the top of the base plate 1. An electroplating adjustment mechanism is connected between the L-shaped mounting bracket 7 and the sealed base plate 5. The electroplating adjustment mechanism is used to drive the clamped conical cylinder 6 into the electroplating bath 2 for uniform electroplating. In operation, in the prior art, when electroplating some conical aerospace parts, because their outer surface is often the working surface, it needs to be electroplated. However, in the prior art, the entire part is immersed in the electrolyte for electroplating, which causes all surfaces of the part to be plated with a metal layer. This results in additional loss of precious metals, increasing the cost of electroplating. Furthermore, when electroplating aerospace parts, because aerospace parts have special characteristics... The special working environment necessitates high tolerances for the thickness of the electroplated metal layer. During electroplating, the area where the part being plated contacts the electrode exhibits a stronger attraction to metal ions. This attraction weakens with increasing distance from the electrode contact point, while the position of the electrode contact point generally remains constant. This results in significant errors in the metal plating layer, failing to meet the operational requirements of aerospace components. This embodiment of the invention addresses these issues. The specific working method is as follows: The conical cylinder 6 containing the part to be plated is inverted onto the sealing base plate 5. Then, the electroplating adjustment mechanism is driven to move the sealing top plate 8 downwards to the top surface of the conical cylinder 6. At this point, the docking and snap-fit ​​mechanism is activated. The snap-fit ​​between the sealing base plate 5 and the sealing top plate 8 completes the sealing and fixing of the conical cylinder 6, preventing electrolyte from flowing into its interior. Then, the limiting position of the snap-fit ​​positioning mechanism is released, and the conical cylinder 6, along with the sealing base plate 5, slides down the sliding column 9 through the electroplating adjustment mechanism and enters the electrolyte. The power is then turned on, with one pole electrically connected to the metal basket 4 and the other pole electrically connected to the inner wall of the conical cylinder. This allows metal ions from the metal basket 4 to dissolve into the solution, and these ions then enter the workpiece surface to form a metal plating layer. During this process, the electroplating adjustment mechanism causes the electrode contact points on the inner wall of the conical cylinder 6 to change periodically, thereby enabling the electrodes to... The equipment allows for the replacement of contact points with the workpiece's interior, facilitating uniform metal plating on the workpiece surface. By employing a docking and snap-fit ​​mechanism, the sealing base plate 5 and sealing top plate 8 are fixed together, thus sealing the interior of the conical cylinder 6. This prevents the inner surface of the conical cylinder 6 from being plated with precious metals, reducing waste and lowering electroplating costs. Furthermore, by incorporating an electroplating adjustment mechanism, the inner wall of the conical cylinder 6 can be periodically and uniformly electrically connected to the electrode. This ensures that the contact points between different parts of the conical cylinder 6 and the electrode are relatively close, resulting in a more uniform attraction of metal ions and effectively reducing the thickness error of the metal plating layer on the outer surface of the conical cylinder 6.

[0039] In one embodiment of the present invention, the snap-fit ​​positioning mechanism includes two first rotating pins 10, which are rotatably connected to the tops of two sliding columns 9 respectively. Two snap-fit ​​plates 11 arranged in a circular array are fixedly connected to the outer walls of each of the two first rotating pins 10. An L-shaped rod 12 is fixedly connected to the bottom of each snap-fit ​​plate 11. The two L-shaped rods 12 on the outer ring of the same first rotating pin 10 are symmetrical. After rotating around the first rotating pin 10, the top surface of the longer part of the L-shaped rod 12 is flush with the sealing base plate 5. The bottom surfaces of the L-shaped rod 12 are in contact with each other. During operation, when the conical cylinder 6 is placed on the sealing base plate 5, the top surface of the long rod of the L-shaped rod 12 is located below the sealing base plate 5, bearing the weight of the sealing base plate 5. After the conical cylinder 6 is sealed and fixed, the sealing base plate 5 needs to move downward. At this time, the first rotating pin 10 is rotated, and the first rotating pin 10 is linked to the locking plate 11 to drive the L-shaped rod 12 to rotate, so that the top surface of the long rod of the L-shaped rod 12 is separated from the bottom surface of the sealing base plate 5, so that the sealing base plate 5 and the conical cylinder 6 can move downward.

[0040] In one embodiment of the present invention, the docking and snapping mechanism includes a sleeve 13, which is fixedly connected to the middle of the top of the sealing base plate 5. The top of the sleeve 13 has a first docking shaft section 1301, and four snapping blocks 14 arranged in a circumferential array are fixedly connected to the top of the first docking shaft section 1301. All snapping blocks 14 have snapping grooves 1401 on their side walls and push inclined surfaces 1402 on their tops. The bottom of the sealing top plate 8 has a second docking shaft section 801, and four insertion grooves 15 arranged in a circumferential array are formed at the bottom of the second docking shaft section 801. The snapping blocks 14 are slidably connected in the insertion grooves 15. Each side wall has an arc-shaped groove 16, and an arc-shaped sliding plate 17 is slidably connected to each of the four arc-shaped grooves 16. One end of each of the four arc-shaped sliding plates 17 is respectively engaged in an adjacent engaging groove 1401. The other end of each of the four arc-shaped sliding plates 17 is fixedly connected to the inner side of the adjacent arc-shaped groove 16 by an arc-shaped spring 18. The top surface of the sealing top plate 8 has an annular groove 19, which is connected to the four arc-shaped grooves 16. The top of each of the four arc-shaped sliding plates 17 is fixedly connected to an annular plate 20 through a connecting plate. The annular plate 20 is rotatably connected in the annular groove 19. During operation, when the conical cylinder 6 is placed on the sealing bottom plate 5, the sealing top plate 8 is moved downwards until the sealing top plate 8 is fully closed. When the bottom surface of plate 8 presses against the top surface of conical cylinder 6, the bottom surface of the second mating shaft section 801 also contacts the top surface of the first mating shaft section 1301. During the downward movement of the sealing top plate 8, the snap-fit ​​block 14 will insert into the insertion groove 15. When the snap-fit ​​block 14 slides in the insertion groove 15, the pushing inclined surface 1402 will squeeze the arc-shaped sliding plate 17 to slide and contract in the arc-shaped groove 16. The arc-shaped sliding plate 17 slides through the connecting plate, driving the annular plate 20 to slide inside the annular groove 19. At the same time, the arc-shaped sliding plate 17 squeezes the arc-shaped spring 18. When the bottom surface of the second mating shaft section 801 contacts the top surface of the first mating shaft section 1301, the arc-shaped sliding plate 17 is elastically compressed by the arc-shaped spring 18. When the resetting force is applied, the sliding pin enters the snap-fit ​​groove 1401. At the same time, the arc-shaped sliding plate 17 drives the annular plate 20 to slide and reset inside the annular groove 19 through the connecting plate, thereby realizing the snap-fit ​​positioning of the second docking shaft section 801 and the first docking shaft section 1301. After the conical cylinder 6 is electroplated, it needs to be removed from the sealing base plate 5. At this time, the annular plate 20 is rotated, and the annular plate 20 drives the arc-shaped sliding plate 17 to slide in the arc groove 16 through the connecting plate, so that the arc-shaped sliding plate 17 is pulled out from the snap-fit ​​groove 1401. Then, the sealing top plate 8 is moved upward, and the snap-fit ​​block 14 can be pulled out from the insertion groove 15, thereby realizing the separation of the second docking shaft section 801 and the first docking shaft section 1301.

[0041] In one embodiment of the present invention, the electroplating adjustment mechanism includes a first rotating shaft 21, a through-hole 22, and a rotating groove 25. The first rotating shaft 21 is rotatably connected to the middle of the top of the sealing base plate 5. The outer wall of the first rotating shaft 21 is in contact with the inner wall of the sleeve 13. The through-hole 22 is circumferentially arrayed and opened through the bottom of the side wall of the sleeve 13. Four circumferentially arrayed connecting blocks 23 are fixedly connected to the bottom of the side wall of the first rotating shaft 21. After all the connecting blocks 23 pass through the adjacent through-holes 22, they are fixedly connected to a rectangular frame 24. The rectangular frame 24 is connected to the inner wall of the conical cylinder 6. A clearance contact mechanism is connected to the conical cylinder 6, which is used to adjust the inner wall of the conical cylinder 6 to make uniform contact with the electrode during electroplating. A rotating groove 25 is opened through the middle of the top of the sealing top plate 8. A second rotating shaft 26 is rotatably connected inside the rotating groove 25. The bottom of the second rotating shaft 26 is engaged with the top of the first rotating shaft 21. The top of the second rotating shaft 26 extends out of the rotating groove 25 and is connected to the L-shaped mounting bracket 7 by a drive mechanism. The drive mechanism is used to drive the second rotating shaft 26 to move up and down and rotate. During operation, when the conical cylinder 6 is placed on the sealing bottom plate 5, the clearance contact mechanism is activated. The contact mechanism electrically connects the inner wall of the conical cylinder 6 to the power supply. At this point, the drive mechanism drives the second rotating shaft 26 downwards, which in turn moves the sealing top plate 8 downwards. When the second mating shaft section 801 contacts the first mating shaft section 1301, the second rotating shaft 26 also engages with the first rotating shaft 21. At this point, the conical cylinder 6 is sealed and fixed. The drive mechanism then continues to drive the sealing top plate 8, moving the conical cylinder 6 and the sealing bottom plate 5 downwards until the conical cylinder 6 is completely immersed in the electrolyte. Finally, the power supply is activated to begin the electroplating process. During the electroplating process, the second rotating shaft 26 is driven by the driving mechanism to rotate periodically in both directions. The second rotating shaft 26 is linked to the rotation of the first rotating shaft 21. The first rotating shaft 21 drives the rectangular frame 24 to rotate periodically in both directions through the connecting block 23. At this time, the positioning contact mechanism is also periodically electrically connected to different positions on the inner wall of the conical cylinder 6, so that the electrode can periodically contact the inner wall of the conical cylinder 6. This is beneficial to make the electrode uniformly contact the inner wall of the conical cylinder 6, and thus promotes uniform electroplating of the surface of the conical cylinder 6 during electroplating.

[0042] In one embodiment of the present invention, a cross groove 2101 is provided at the top of the first rotating shaft 21, and a cross pin 2601 is fixedly connected to the bottom of the second rotating shaft 26, with the cross pin 2601 inserted into the cross groove 2101. During operation, when the second mating shaft section 801 contacts the first mating shaft section 1301, the cross pin 2601 is fully inserted into the cross groove 2101. When the second rotating shaft 26 rotates, the cross pin 2601 presses against the side wall of the cross groove 2101, causing the first rotating shaft 21 to rotate. The fit between the cross pin 2601 and the cross groove 2101 is highly accurate and can withstand greater pressure, thus enabling more stable operation.

[0043] In one embodiment of the present invention, the clearance contact mechanism includes a sliding block 27. The lower end of the sliding block 27 is slidably connected to the inside of the rectangular frame 24. A spring 44 is fixedly connected between the end face of the sliding block 27 near the connecting block 23 and the end face of the rectangular frame 24 near the connecting block 23. Mounting plates 28 are symmetrically fixed to the top of the sliding block 27. A second rotating pin 29 is rotatably connected between the two mounting plates 28. One end of the second rotating pin 29 passes through one of the mounting plates 28 and extends outward. A torsion spring 45 is fixedly connected between the outer wall of the second rotating pin 29 and the side wall of the mounting plate 28 through which it passes. A conductive plate 30 is fixedly connected to the outer wall of the second rotating pin 29. The conductive plate 30 is electrically connected to a power source. During operation, when the conical cylinder 6 is placed on the sealing base plate 5 from top to bottom, the inner wall of the conical cylinder 6 presses against the top of the conductive plate 30, causing the conductive plate 30 to rotate around the second rotating pin 29. At the same time, the torsion spring 45 is twisted. When the conductive plate 30 rotates to the point where it is in contact with the conical cylinder 28, the contact mechanism is activated. When the inner wall of the conical cylinder 6 is fully in contact with the wall, as the conical cylinder 6 continues to move downward, the conductive plate 30 of the inner wall of the conical cylinder 6 drives the mounting plate 28 and the sliding block 27 to slide in the rectangular frame 24, while compressing the spring 44, until the bottom surface of the conical cylinder 6 is fully in contact with the sealing base plate 5. During this process, the conductive plate 30 is always in contact with the inner wall of the conical cylinder 6. When the power is turned on to start electroplating, the first rotating shaft 21 rotates and drives the rectangular frame 24 to rotate through the connecting block 23. The rectangular frame 24 drives the sliding block 27 and the mounting plate 28 to rotate, and the conductive plate 30 also rotates together. During the rotation, the conductive plate 30 is always subjected to the elastic force of the torsion spring 45 and the spring 44, so it always remains in contact with the inner wall of the conical cylinder 6. By setting the conductive plate 30 to be fully in contact with the inner wall of the conical cylinder and making the conductive plate 30 rotate periodically in both directions, all parts of the inner wall of the conical cylinder 6 can be electrically connected to the power supply, which helps to reduce the thickness error of the metal plating layer on the outer surface of the conical cylinder 6.

[0044] In one embodiment of the present invention, the driving mechanism includes a turntable 31, which is rotatably mounted on the top surface of an L-shaped mounting bracket 7. A first cylinder 32 is fixedly connected to the top of the turntable 31. The telescopic rod of the first cylinder 32 passes through the top of the turntable 31 and the L-shaped mounting bracket 7 and is fixedly connected to the top of a second rotating shaft 26. A rotary driving mechanism is connected between the top of the turntable 31 and the top of the L-shaped mounting bracket 7. The rotary driving mechanism is used to drive the turntable 31 to rotate. During operation, when the conical cylinder 6 is placed on the sealing base plate 5, the first cylinder 32 is activated, causing the telescopic rod of the first cylinder 32 to extend and drive the second rotating shaft 26 to move downward. When electroplating of the conical cylinder 6 begins, the rotary driving mechanism is activated, causing the turntable 31 to rotate reciprocally. The turntable 31 drives the first cylinder 32 to rotate reciprocally, and the telescopic rod of the first cylinder 32 drives the second rotating shaft 26 to rotate reciprocally.

[0045] In one embodiment of the present invention, the rotary drive mechanism includes a push plate 33 and a second cylinder 34. The right end of the push plate 33 is fixedly connected to the left side of the top of the turntable 31. A T-slot 35 is provided in the middle of the front surface of the push plate 33. The second cylinder 34 is fixedly connected to the left side of the top of the L-shaped mounting bracket 7. A T-pin 36 is fixedly connected to the telescopic rod of the second cylinder 34. The cross-section of the T-pin 36 is circular, and the T-pin 36 is slidably inserted into the T-slot 35. During operation, when electroplating of the conical cylinder 6 begins, the second cylinder 34 is activated. The telescopic rod of the second cylinder 34 extends and retracts periodically. When the telescopic rod of the second cylinder 34 extends, it drives the T-pin 36 to push the push plate 33. At the same time, the T-pin 36 slides to the left inside the T-slot 35, and the push plate 33 drives the turntable 31 to rotate clockwise. When the telescopic rod of the second cylinder 34 retracts, it drives the T-pin 36 to pull the push plate 33. At the same time, the T-pin 36 slides to the right in the T-slot 35, and the push plate 33 drives the turntable 31 to rotate counterclockwise, thereby realizing the reciprocating rotation of the turntable 31 and the first cylinder 32.

[0046] In one embodiment of the present invention, multiple linearly arrayed rubber sealing rings 37 are embedded on the top surface of the sealing base plate 5 and the bottom surface of the sealing top plate 8. The top of the sealing base plate 5 has an inclined surface 501 that matches the inner wall of the conical cylinder 6. During operation, when the conical cylinder 6 is placed on the sealing base plate 5, the inclined surface 501 contacts the bottom of the inner wall of the conical cylinder 6, which can prevent the conical cylinder 6 from slipping on the top surface of the sealing base plate 5. At the same time, the rubber sealing rings 37 are tightly fitted to the upper and lower bottom surfaces of the conical cylinder 6, which helps to prevent electrolyte from seeping into the interior of the conical cylinder 6.

[0047] In one embodiment of the present invention, two symmetrical cover plates 38 are slidably connected to the top of the electroplating tank 2. A rack 39 is fixedly connected to the front of each cover plate 38. Two motors 40 are fixedly connected to the front of the electroplating tank 2. Gears 41 are fixedly connected to the output shafts of both motors 40. The two gears 41 mesh with adjacent racks 39. Semicircular grooves 42 are formed through the top of the two cover plates 38 on their adjacent sides. After the two semicircular grooves 42 approach each other, they form a complete circular groove that contacts the outer wall of the telescopic end of the first cylinder 32. Air ducts connecting the electroplating tank 2 to the outside air are connected to the left and right side plates of the electroplating tank 2. Purification device 43; During operation, the electroplating process generates toxic waste gas, which causes health damage to workers. This embodiment of the present invention can solve the above problems. The specific working method is as follows: After the conical cylinder 6 is completely immersed in the electrolyte, the motor 40 is started before starting the power supply. The output shaft of the motor 40 drives the gear 41 to rotate. The gear 41, in conjunction with the rack 39, drives the cover plate 38 to slide towards the middle of the electroplating tank 2. When the two cover plates 38 come into contact, the two semi-circular grooves 42 merge into a circular groove and fit on the outer wall of the telescopic rod of the first cylinder 32. Then, the air purification device 43 is started to purify the toxic gas in the electroplating tank 2 before discharging it into the atmosphere.

[0048] Working principle of this invention:

[0049] In current technology, when electroplating conical or cylindrical aerospace components, the outer surface is often the working surface and requires electroplating. However, existing techniques involve immersing the entire component in the electrolyte for plating, resulting in all surfaces being coated with a metal layer. This leads to additional loss of precious metals, increasing plating costs. Furthermore, the special working environment of aerospace components necessitates strict tolerances for the thickness of the plating layer. During electroplating, the areas where the component contacts the electrode exhibit a stronger attraction for metal ions. The attraction of metal ions to the electrode gradually weakens with increasing distance from the electrode contact point, while the position of the electrode contact point generally remains unchanged. This results in a large error in the metal coating, failing to meet the working requirements of aerospace components. This embodiment of the invention solves the above problems. The specific working method is as follows: The conical cylinder 6 of the part to be plated is inverted onto the sealing base plate 5. Then, the electroplating adjustment mechanism is driven to move the sealing top plate 8 downwards to the top surface of the conical cylinder 6. At this time, the docking and snapping mechanism achieves the snapping between the sealing base plate 5 and the sealing top plate 8, thus completing the sealing and fixing of the conical cylinder 6, preventing its interior from becoming contaminated. The electrolyte will flow in, and then the limiting position of the locking mechanism will be released. The conical cylinder 6, along with the sealing base plate 5, will slide down the sliding column 9 through the electroplating adjustment mechanism and enter the electrolyte. Then, the power supply will be turned on, with one pole electrically connected to the metal basket 4 and the other pole electrically connected to the inner wall of the conical cylinder. This allows the metal in the metal basket 4 to form metal ions that dissolve into the solution, and these metal ions then enter the workpiece surface to form a metal plating layer. During this process, the electroplating adjustment mechanism causes the electrode contact points on the inner wall of the conical cylinder 6 to change periodically, allowing the electrodes to exchange contact points with the inside of the workpiece, thus facilitating the metal plating process. The equipment uses a docking and snapping mechanism to fix the sealing base plate 5 and the sealing top plate 8, thereby sealing the inside of the conical cylinder 6. This prevents the inner surface of the conical cylinder 6 from being plated with precious metals, reducing waste of precious metals and lowering electroplating costs. By setting an electroplating adjustment mechanism, the inner wall of the conical cylinder 6 can be electrically connected to the electrode uniformly and periodically. As a result, the contact points between the various parts of the conical cylinder 6 and the electrode are relatively close, and the attraction of metal ions to each part is relatively similar, effectively reducing the thickness error of the metal coating on the outer surface of the conical cylinder 6.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An electroplating equipment for precision electroplating of aerospace parts, comprising a base plate (1) and a sealing top plate (8), characterized in that, An electroplating tank (2) is fixedly connected to the front side of the top of the base plate (1). Two symmetrical crossbars (3) are fixedly connected between the left and right side walls inside the electroplating tank (2). Multiple linearly arrayed metal baskets (4) are hung at the bottom of the two crossbars (3). The metal baskets (4) are filled with metal for electroplating. Two symmetrical sliding columns (9) are fixedly connected to the bottom surface inside the electroplating tank (2). A sealing base plate (5) is slidably connected to the outer wall of the two sliding columns (9). (9) A snap-fit ​​positioning mechanism is connected to the sealing base plate (5). The snap-fit ​​positioning mechanism is used to fix the position of the sealing base plate (5) in the vertical direction. The top surface of the sealing base plate (5) supports the conical cylinder (6). The sealing top plate (8) is placed on the top surface of the conical cylinder (6). A docking snap-fit ​​mechanism is connected between the sealing top plate (8) and the sealing base plate (5). The docking snap-fit ​​mechanism is used to snap-fit ​​and fix the sealing top plate (8) and the sealing base plate (5) to seal and clamp the conical cylinder (6). An L-shaped mounting bracket (7) is fixedly connected to the rear side of the top of the base plate (1). An electroplating adjustment mechanism is connected between the L-shaped mounting bracket (7) and the sealing base plate (5). The electroplating adjustment mechanism is used to drive the clamped conical cylinder (6) into the electroplating tank (2) for uniform electroplating. The docking and snapping mechanism includes a sleeve (13), which is fixedly connected to the middle of the top of the sealing base plate (5); The electroplating adjustment mechanism includes a first rotating shaft (21), a through-hole (22), and a rotating groove (25). The first rotating shaft (21) is rotatably connected to the middle of the top of the sealing base plate (5). The outer wall of the first rotating shaft (21) is in contact with the inner wall of the sleeve (13). The through-hole (22) is circumferentially arrayed and opened at the bottom of the side wall of the sleeve (13). Four circumferentially arrayed connecting blocks (23) are fixedly connected to the bottom of the side wall of the first rotating shaft (21). All the connecting blocks (23) pass through the adjacent through-holes (22) and are then fixedly connected to a rectangular frame (24). The rectangular frame (24) and A clearance contact mechanism is connected between the inner walls of the conical cylinder (6). The clearance contact mechanism is used to adjust the inner wall of the conical cylinder (6) to make uniform contact with the electrode during electroplating. The rotating groove (25) is opened through the middle of the top of the sealing top plate (8). A second rotating shaft (26) is rotatably connected in the rotating groove (25). The bottom of the second rotating shaft (26) is engaged with the top of the first rotating shaft (21). The top of the second rotating shaft (26) extends out of the rotating groove (25) and is connected to the L-shaped mounting bracket (7) by a driving mechanism. The driving mechanism is used to drive the second rotating shaft (26) to move up and down and rotate. The clearance contact mechanism includes a sliding block (27), the lower end of which is slidably connected to the inside of the rectangular frame (24). A spring (44) is fixedly connected between the end face of the sliding block (27) near the connecting block (23) and the end face of the inside of the rectangular frame (24) near the connecting block (23). A mounting plate (28) is symmetrically fixed to the top of the sliding block (27). A second rotating pin (29) is rotatably connected between the two mounting plates (28). One end of the second rotating pin (29) extends outward after penetrating one of the mounting plates (28). A torsion spring (45) is fixedly connected between the outer wall of the second rotating pin (29) and the side wall of the mounting plate (28) through which it is penetrated. A conductive plate (30) is fixedly connected to the outer wall of the second rotating pin (29). The conductive plate (30) is electrically connected to a power source.

2. The electroplating equipment for precision electroplating of aerospace parts according to claim 1, characterized in that, The snap-fit ​​positioning mechanism includes two first rotating pins (10), which are rotatably connected to the tops of the two sliding columns (9). Two snap-fit ​​plates (11) arranged in a circular array are fixedly connected to the outer walls of the two first rotating pins (10). An L-shaped rod (12) is fixedly connected to the bottom of all the snap-fit ​​plates (11). The two L-shaped rods (12) on the outer ring of the same first rotating pin (10) are symmetrical. After the L-shaped rod (12) rotates around the first rotating pin (10), the top surface of its long rod contacts the bottom surface of the sealing base plate (5).

3. The electroplating equipment for precision electroplating of aerospace parts according to claim 1, characterized in that, The docking and snapping mechanism further includes: the top of the sleeve (13) has a first docking shaft section (1301), the top of the first docking shaft section (1301) is fixedly connected to four snapping blocks (14) arranged in a circumferential array, snapping grooves (1401) are provided on the side walls of all the snapping blocks (14), and pushing inclined surfaces (1402) are provided on the top of all the snapping blocks (14). The bottom of the sealing top plate (8) has a second docking shaft section (801), the bottom of the second docking shaft section (801) is provided with four insertion grooves (15) arranged in a circumferential array, the snapping blocks (14) are slidably connected in the insertion grooves (15), and the side walls of the four insertion grooves (15) are... Each of the four arc-shaped grooves (16) is provided with an arc-shaped sliding plate (17) slidably connected in each of the four arc-shaped grooves (16). One end of each of the four arc-shaped sliding plates (17) is respectively engaged in the adjacent engaging groove (1401). The other end of each of the four arc-shaped sliding plates (17) is fixedly connected to the inner side of the adjacent arc-shaped groove (16) with an arc-shaped spring (18). The top surface of the sealing top plate (8) is provided with an annular groove (19). The annular groove (19) is connected to the four arc-shaped grooves (16). The top of each of the four arc-shaped sliding plates (17) is fixedly connected to an annular plate (20) through a connecting plate. The annular plate (20) is rotatably connected in the annular groove (19).

4. The electroplating equipment for precision electroplating of aerospace parts according to claim 1, characterized in that, The top of the first rotating shaft (21) is provided with a cross groove (2101), and the bottom of the second rotating shaft (26) is fixedly connected with a cross pin (2601), which is inserted into the cross groove (2101).

5. The electroplating equipment for precision electroplating of aerospace parts according to claim 1, characterized in that, The driving mechanism includes a turntable (31), which is rotatably mounted on the top surface of the L-shaped mounting bracket (7). A first cylinder (32) is fixedly connected to the top of the turntable (31). The telescopic rod of the first cylinder (32) passes through the top of the turntable (31) and the L-shaped mounting bracket (7) and is fixedly connected to the top of the second rotating shaft (26). A rotary driving mechanism is connected between the top of the turntable (31) and the top of the L-shaped mounting bracket (7). The rotary driving mechanism is used to drive the turntable (31) to rotate.

6. The electroplating equipment for precision electroplating of aerospace parts according to claim 5, characterized in that, The rotary drive mechanism includes a push plate (33) and a second cylinder (34). The right end of the push plate (33) is fixedly connected to the left side of the top of the turntable (31). A T-slot (35) is provided in the middle of the front of the push plate (33). The second cylinder (34) is fixedly connected to the left side of the top of the L-shaped mounting bracket (7). A T-pin (36) is fixedly connected to the telescopic rod of the second cylinder (34). The cross-section of the T-pin (36) is circular. The T-pin (36) is slidably inserted into the T-slot (35).

7. The electroplating equipment for precision electroplating of aerospace parts according to claim 1, characterized in that, Multiple linearly arrayed rubber sealing rings (37) are embedded on the top surface of the sealing base plate (5) and the bottom surface of the sealing top plate (8). The top of the sealing base plate (5) has an inclined surface (501) that matches the inner wall of the conical cylinder (6).

8. The electroplating equipment for precision electroplating of aerospace parts according to claim 1, characterized in that, The top of the electroplating tank (2) is slidably connected to two symmetrical cover plates (38). The front of each of the two cover plates (38) is fixedly connected to a rack (39). The front of the electroplating tank (2) is fixedly connected to two motors (40). The output shafts of the two motors (40) are fixedly connected to gears (41). The two gears (41) mesh with the adjacent racks (39). The top of the two cover plates (38) is provided with a semi-circular groove (42) on the side that is close to each other. After the two semi-circular grooves (42) are close to each other, they form a complete circular groove and contact the outer wall of the telescopic end of the first cylinder (32). The left and right side plates of the electroplating tank (2) are connected to an air purification device (43) that connects the electroplating tank (2) with the outside air.

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