An electroplating device for the inner diameter of metal parts

Abstract

This invention relates to the field of electroplating technology, specifically disclosing a metal part inner diameter electroplating device, comprising: an electroplating tank, a cleaning tank, an electroplating rack, and a moving mechanism for transferring the electroplating rack. The electroplating rack includes a support, and the liquid removal mechanism includes a sleeve rotatably mounted on the support and a driving component for driving the sleeve to rotate. The lower end of the sleeve is open and the upper end is closed. During electroplating, the support is placed on the electroplating tank, and the lower end of the sleeve is located inside the electroplating tank. The mounting mechanism includes a lifting ring slidably mounted in the sleeve in the vertical direction, a hanging rod mounted at the lower end of the lifting ring, and a driving component for driving the lifting ring to move up and down. After electroplating is completed, the lifting ring moves from the lower end to the upper end of the sleeve, and then the sleeve rotates, causing the lifting ring to rotate, which in turn causes the hanging rod to rotate the workpiece, thereby throwing the liquid on the surface of the workpiece to the inner wall of the sleeve. The beneficial effects of this invention are: it can separate the electroplating liquid from the surface of the workpiece without polluting the workshop air.

Description

Technical Field

[0001] This invention relates to the field of electroplating technology, and more specifically to an electroplating apparatus for the inner diameter of metal parts. Background Technology

[0002] Electroplating of metal parts is a surface treatment technology based on electrochemical principles. It enhances the corrosion resistance, wear resistance, conductivity, or decorative properties of a substrate by depositing a metal or alloy coating on its surface. The core process involves immersing the metal workpiece, acting as the cathode, in an electrolyte containing target metal ions. An external DC power supply drives the electrolytic reaction, reducing the metal ions on the cathode surface and forming a uniform, dense coating. Electroplating equipment typically consists of a pretreatment unit, an electroplating tank, a power system, and auxiliary equipment. The pretreatment stage includes degreasing, pickling, and activation steps to ensure a clean workpiece surface and good adhesion. The electroplating tank contains an anode (usually the coating metal or an inert material) and a cathode (the workpiece). The electrolyte is formulated with metal salts, conductive agents, and additives. Upon energization, the anode metal dissolves, replenishing the metal ions in the electrolyte, while an ion reduction reaction occurs on the cathode surface, depositing metal atoms layer by layer. The equipment utilizes rack design, electrolyte circulation and filtration, temperature control, and current density adjustment to ensure coating thickness and uniformity. For example, zinc plating protects steel parts through a sacrificial anode mechanism, chromium plating enhances wear resistance by utilizing its high hardness, and nickel plating is often used to improve conductivity or for decorative purposes. These technologies are applied in automotive parts, electronic components, and mechanical parts, meeting diverse functional requirements.

[0003] Chinese patent document CN118516726B discloses an electroplating apparatus and method for surface treatment of metal products, including an electroplating tank, a first linear slide, a second linear slide, a mounting plate, a nozzle, and an electroplating hanger. The electroplating tank is equipped with multiple partitions that divide the tank into multiple separate chambers for containing electroplating solutions of different compositions. The first linear slide is horizontally mounted on the upper end of the electroplating tank, and the second linear slide is vertically mounted on the first linear slide. The mounting plate is mounted on the second linear slide, and the nozzle is located on the mounting plate. The electroplating hanger is mounted on the mounting plate, and the workpiece is hung on the hanger. The second linear slide then controls the hanger to descend into the corresponding electroplating tank. After electroplating for a period of time, the second linear slide controls the hanger to rise, removing the workpiece from the electroplating solution. Finally, the nozzle blows air downwards to remove the electroplating solution from the workpiece surface.

[0004] In the aforementioned techniques, to avoid carrying residual electroplating solution from the previous electroplating tank onto the workpiece surface into the next electroplating tank, which would reduce the purity and electroplating effect of the electroplating solution in the next tank and increase the maintenance cost of the electroplating solution, a method of blowing the electroplating solution off the workpiece surface is used after the workpiece is removed from the electroplating solution. However, since some electroplating racks are quite long in the vertical direction, after the electroplating rack is completely removed from the electroplating solution, the upper side of the electroplating rack is located above the electroplating tank. During the process of blowing the electroplating solution off the workpiece surface, the electroplating solution may be blown outside the electroplating tank or into other electroplating tanks. Furthermore, during the blowing process, the electroplating solution may be blown into the air, thereby polluting the air in the workshop and endangering the health of the workers. Summary of the Invention

[0005] This invention provides a metal part inner diameter electroplating device, which aims to solve the technical problem in related technologies that the electroplating solution is blown into the air, thereby polluting the air in the workshop and endangering the health of workers.

[0006] An electroplating apparatus for the inner diameter of metal parts includes an electroplating tank, a cleaning tank, electroplating racks, and a moving mechanism for transferring the electroplating racks. The electroplating racks include:

[0007] The bracket is provided with a connecting part for connecting to the moving mechanism;

[0008] The liquid removal mechanism includes a sleeve rotatably mounted on a support and a drive component for driving the sleeve to rotate. The lower end of the sleeve is open and the upper end is closed. During electroplating, the support is placed on the electroplating tank and the lower end of the sleeve is located inside the electroplating tank.

[0009] The mounting mechanism includes a lifting ring that is slidably installed in a sleeve in the vertical direction, a hanging rod installed at the lower end of the lifting ring, and a driving component 2 for driving the lifting ring to rise and fall. The hanging rod is used to mount the workpiece and prevent the workpiece from falling off when it rotates.

[0010] After electroplating is completed, the lifting ring moves from the lower end to the upper end of the sleeve. Then the sleeve rotates, causing the lifting ring to rotate, which in turn causes the hanging rod to rotate the workpiece, thereby throwing the liquid on the surface of the workpiece onto the inner wall of the sleeve.

[0011] By installing a sleeve on the support, with the lower end of the sleeve located inside the electroplating tank, and by incorporating a lifting ring inside the sleeve, the workpiece can move downwards independently into the electroplating tank during electroplating, positioning the sleeve above the workpiece. When the workpiece moves upwards after electroplating, it first rises into the sleeve. Then, by rotating the sleeve and workpiece together, residual electroplating solution on the workpiece surface can be flung into the sleeve. Since the lower end of the sleeve is located inside the electroplating tank, the flung electroplating solution will enter the electroplating tank from the lower end of the sleeve, preventing contamination of the upper part of the electroplating tank or the adjacent cleaning tank. Furthermore, the flung electroplating solution is less likely to disperse into the air, avoiding air pollution and reducing harm to workers.

[0012] Preferably, the inner wall of the sleeve is provided with a spiral groove that extends through the lower end. When the liquid on the surface of the workpiece is thrown onto the inner wall of the sleeve, the liquid flows downward under the guidance of the spiral groove and thus enters the electroplating bath.

[0013] During the rotation of the sleeve, the spiral groove can more quickly throw the electroplating solution thrown off the workpiece from the lower end of the sleeve into the electroplating solution below it.

[0014] Preferably, the first driving component includes a second motor whose output end is connected to the sleeve, and the second motor is fixedly mounted on the bracket.

[0015] Preferably, the second driving component includes a rotating shaft rotatably mounted on the sleeve and a clutch assembly disposed on the sleeve. The rotating shaft passes through the sleeve in a vertical direction, and a reciprocating screw is fixedly mounted on the lower end of the rotating shaft. The reciprocating screw passes through the lifting ring, and the lifting ring and the reciprocating screw are threadedly engaged. After electroplating is completed, the second motor rotates forward, and the clutch assembly locks the sleeve and the bracket. When the lifting ring moves to the upper end of the reciprocating screw, the second motor rotates in reverse, and the clutch assembly locks the rotating shaft and the sleeve.

[0016] By setting a reciprocating lead screw, it can cooperate with the clutch assembly to make the lifting ring rise or fall inside the sleeve.

[0017] Preferably, the clutch assembly includes a first one-way bearing mounted on a rotating shaft and a second one-way bearing mounted on a bracket. The inner and outer rings of the first one-way bearing are fixedly connected to the rotating shaft and the sleeve, respectively. The inner and outer rings of the second one-way bearing are fixedly connected to the sleeve and the bracket, respectively. When the second motor rotates forward, the inner and outer rings of the second one-way bearing do not rotate relative to each other. When the second motor rotates in reverse, the inner and outer rings of the first one-way bearing do not rotate relative to each other.

[0018] By setting one-way bearing one and one-way bearing two, and then utilizing the automatic reciprocating characteristic of the reciprocating screw, a simple structure is achieved to control the switching between the reciprocating movement and rotation of the lifting ring.

[0019] Preferably, the connecting part includes two sliders that are slidably installed on the left and right ends of the bracket in the vertical direction. A support platform is installed on the upper surface of the electroplating tank. When the bracket is on the electroplating tank, the bottom end of the bracket abuts against the support platform. At this time, the slider is located at the lower end of the bracket. When the bracket is on the cleaning tank, the bottom end of the bracket is located inside the cleaning tank. At this time, the slider is located at the upper end of the bracket and abuts against the upper end of the cleaning tank.

[0020] Preferably, multiple hanging rods are provided on the lifting ring, and the multiple hanging rods are arranged in a circular array around the axis of the lifting ring.

[0021] Preferably, a collar is provided on the inner side of the hanging rod, which is used to connect multiple hanging rods together. A water spray rod is installed in the cleaning pool, and the water spray rod passes through the collar during cleaning.

[0022] Preferably, the lifting ring has multiple lifting rods and a driving component for moving the lifting rods slidably mounted in the vertical direction. The lifting rods are located between two adjacent hanging rods, and multiple hooks are provided on the hanging rods. Each hook consists of a horizontal section and a vertical section. Multiple limiting rods are fixedly installed on the lifting rods. The limiting rods are located outside the hooks. In the initial state, the limiting rods are flush with the horizontal section of the hooks to prevent the workpiece from deflecting outward on the hooks when it rotates. When the lifting rod moves downward, the limiting rods abut against the vertical section of the adjacent lower hook.

[0023] Preferably, the driving component three includes an elastic element mounted on the lifting ring. The elastic element is a spring, and the two ends of the spring are respectively connected to the lifting ring and the lifting rod. The top end of the lifting rod extends beyond the upper end face of the lifting ring.

[0024] By incorporating a spring, the lifting rod can be automatically reset.

[0025] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0026] By setting a sleeve on the outside of the workpiece, after the workpiece is electroplated, the electroplating solution on the surface of the workpiece is thrown out by rotating the workpiece inside the sleeve. By opening a spiral groove inside the sleeve, the electroplating solution can be thrown out from the bottom of the sleeve more quickly during the rotation of the sleeve. By setting the lower end of the sleeve inside the electroplating tank and above the electroplating solution, the electroplating solution will directly enter the electroplating tank and will not have a significant impact on the air and the surrounding environment. By setting a lifting rod on the lifting ring, the workpiece can be rotated in two states, which facilitates more comprehensive throwing out of the electroplating solution on the surface of the workpiece. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2This is a schematic diagram of the electroplating tank of the present invention.

[0029] Figure 3 This is a front view of the electroplating fixture of the present invention.

[0030] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0031] Figure 5 This is a schematic diagram of the structure of the hanging rod of the present invention.

[0032] Figure 6 This is a cross-sectional view of the sleeve of the present invention.

[0033] Figure 7 This is a schematic diagram of the structure of the rotating shaft of the present invention.

[0034] Figure 8 This is a schematic diagram of the lifting rod of the present invention.

[0035] Figure 9 This is a front view of the overall structure of the present invention.

[0036] Figure label:

[0037] 1. Electroplating tank; 11. Mounting platform one; 12. Support platform; 2. Cleaning tank; 21. Mounting platform two; 22. Water spray bar; 3. Bracket; 31. Crossbar two; 32. Column two; 33. Slider; 34. Slide groove one; 35. Support rod; 36. Boss two; 4. Dehydration mechanism; 41. Sleeve; 411. Spiral groove; 412. Slide groove two; 413. Motor two; 5. Hanging mechanism; 51. Lifting ring; 52. Hanging rod; 53. Lifting rod; 54. Boss three; 55. Hook; 56. Limiting rod; 57. Spring; 58. Rotating shaft; 59. One-way bearing one; 510. One-way bearing two; 6. Moving mechanism; 61. Track frame; 62. Crossbeam; 63. Column one; 64. Crossbar one; 65. Boss one; 7. Workpiece. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figure 1As shown, an embodiment of the present invention provides a metal part inner diameter electroplating apparatus, comprising an electroplating tank 1, a cleaning tank 2, an electroplating rack, and a moving mechanism 6. The electroplating tank 1 contains an electroplating solution for electroplating a workpiece 7. The cleaning tank 2 is used to rinse the workpiece 7 after electroplating, thereby cleaning the residual electroplating solution on the surface of the workpiece 7 and preventing contamination of the electroplating solution in the next electroplating tank 1. The electroplating rack is used to hang the workpiece 7. The moving mechanism 6 is used to lift and lower the electroplating rack and transfer the electroplating rack from the electroplating tank 1 to the cleaning tank 2.

[0040] During electroplating, the worker first hangs the workpiece 7 on the electroplating rack. Then, the moving mechanism 6 lifts the electroplating rack and moves the electroplating rack full of workpieces 7 above the electroplating tank 1. Next, the moving mechanism 6 lowers the electroplating rack onto the electroplating tank 1. At this time, the workpieces 7 on the electroplating rack are all immersed in the electroplating solution. Finally, the workpieces 7 on the electroplating rack begin to be electroplated. After the electroplating is completed, the moving mechanism 6 lifts the electroplating rack and transfers it to the cleaning tank 2. After the electroplating rack enters the cleaning tank 2, the workpieces 7 are sprayed with water to rinse them.

[0041] like Figure 1 and Figure 2 As shown, a locking platform 11 is installed on both the left and right sides of the upper surface of the electroplating tank 1. When the electroplating fixture is placed on the electroplating tank 1, the locking platform 11 is used to limit the electroplating fixture and prevent it from moving in the front-back or left-right direction.

[0042] like Figure 1 and Figure 2 As shown, two clamping platforms 21 are installed on the left and right sides of the upper surface of the cleaning tank 2. When the electroplating rack is placed on the cleaning tank 2, the clamping platforms 21 are used to limit the electroplating rack and prevent it from moving in the front-back or left-right direction. Three upward-extending water spray rods 22 are installed on the bottom surface of the cleaning tank 2. The surface of the water spray rods 22 has multiple water spray holes. A water supply pipe is installed in the cleaning tank 2, and a water pump (not shown in the figure) is connected to the outside of the water supply pipe. When the electroplating rack is placed on the cleaning tank 2, the water pump pumps clean water into the water spray rods 22 through the water supply pipe. The clean water in the water spray rods 22 is sprayed onto the workpiece 7 hanging on the electroplating rack through the water spray holes, thereby rinsing off the electroplating solution remaining on the surface of the workpiece 7 after electroplating. This prevents the electroplating solution in the next electroplating tank 1 from being contaminated by the electroplating solution remaining on the surface of the workpiece 7 when it enters the next electroplating tank 1.

[0043] like Figure 1 and Figure 9As shown, the moving mechanism 6 includes a track frame 61, a crossbeam 62, a lifting device, a winch, and a horizontal moving component. The track frame 61 is set on the left and right sides of the electroplating tank 1 and the cleaning tank 2. The left and right ends of the crossbeam 62 are placed on the track frame 61. The winch is fixedly installed on the crossbeam 62. The lifting device consists of a crossbar 64 and two columns 63. Both columns 63 extend downward and are fixedly installed on the left and right ends of the lower end face of the crossbar 64. The lower end of the column 63 extends towards the electroplating tank 1 and has a boss 65. The boss 65 is used to support the electroplating fixture when transferring it. The extended end of the winch is fixedly connected to the crossbar 64. When the winch rewinds, it drives the crossbar 64 to move upward. The horizontal moving component is used to drive the crossbeam 62 to move along the front and back direction on the track frame 61.

[0044] like Figure 1 and Figure 9 As shown, the horizontal moving assembly includes multiple traveling wheels and two motors (not shown in the figure). Multiple traveling wheels are rotatably mounted on both the left and right ends of the lower end face of the crossbeam 62. The rotation axis of the traveling wheels extends in the vertical direction, and the traveling wheels abut against the track frame 61. The two motors are fixedly installed on the left and right ends of the crossbeam 62, and the output end of the motors is connected to the traveling wheels. When the electroplating fixture is moved from above the electroplating tank 1 to above the cleaning tank 2, the motors drive the traveling wheels to rotate, thereby causing the traveling wheels to roll backward along the surface of the track frame 61, thereby driving the crossbeam 62 to move backward on the track frame 61, so that the electroplating fixture moves from above the electroplating tank 1 to above the cleaning tank 2.

[0045] like Figures 1-3 As shown, the electroplating rack includes a support 3, a liquid removal mechanism 4, and a mounting mechanism 5. The support 3 consists of a horizontal bar 31 and two vertical columns 32 forming a downward-facing "U" shape. The two vertical columns 32 are provided with connecting parts for connecting to the boss 65. Each connecting part includes two sliders 33 that slide vertically on the two vertical columns 32. The ends of the two vertical columns 32 that are far apart from each other are provided with vertically extending grooves 34. The two sliders 33 are slidably installed in the two vertical grooves 34 respectively. Support rods 35 are installed at opposite ends of the two support rods 35. When the bracket 3 is placed on the electroplating tank 1 or the cleaning tank 2, the support rods 35 are located in the mounting platform 11 or the mounting platform 21. Bosses 36 are installed at opposite ends of the two support rods 35. Two support platforms 12 are fixedly installed on the upper surface of the electroplating tank 1. The two support platforms 12 are located on the side where the two bosses 65 are close to each other. The liquid removal mechanism 4 is used to rotate the workpiece 7, thereby throwing the residual electroplating liquid on the surface of the workpiece 7 into the electroplating tank 1. The hanging mechanism 5 is used to hang the workpiece 7.

[0046] When workpiece 7 is electroplated in electroplating tank 1, the lower ends of the two columns 32 are placed on the two support platforms 12 respectively. At this time, the slider 33 is located at the lowest end of the slide groove 34, and the support rods 35 on the two sliders 33 are located in the two clamping platforms 11 respectively. After electroplating is completed, the hanging mechanism 5 moves workpiece 7 upward relative to the crossbar 31. After workpiece 7 is removed from the electroplating solution and enters the desolvation mechanism 4, the desolvation mechanism 4 rotates workpiece 7 and throws the electroplating solution remaining on the surface of workpiece 7 into electroplating tank 1. Then, the winch first unwinds to move the lifting device downward. When the boss 65 is located below the boss 36, the motor drives the traveling wheel to rotate, causing the crossbeam 62 to move on the track frame 61, thereby moving the boss 65 directly below the boss 36. Then, the winch rewinds to move the crossbar 64 upward through the boss 65, causing the slider 33 to move to the slide groove. After the top of the first 34, the first boss 65 drives the second crossbar 31 to move upward through the second boss 36. When the desolventing mechanism 4 is above the electroplating tank 1, the crossbeam 62 moves backward, which in turn drives the second crossbar 31 to move backward. When the workpiece 7 is above the cleaning tank 2, the winch unwinds, causing the first crossbar 64 to move downward, which in turn causes the second crossbar 31 to move downward. Since there is no support platform 12 on the cleaning tank 2, when the support rod 35 is placed in the second clamping platform 21, the lower end of the second column 32 is located in the cleaning tank 2. When there are multiple sets of electroplating tank 1 and cleaning tank 2, the second column 32 is located in the cleaning tank 2, and the desolventing mechanism 4 is also in the cleaning tank 2. The water spray bar 22 sprays water to clean the workpiece 7 while also cleaning the desolventing mechanism 4. At the same time, the desolventing mechanism 4 being located in the cleaning tank 2 can also leave space above the cleaning tank 2, allowing the other supports 3 to pass over the support 3.

[0047] like Figures 1-6As shown, the descaling mechanism 4 is provided in three sets, and the three sets of descaling mechanisms 4 are evenly distributed on the crossbar 2 31 in the left-right direction. The descaling mechanism 4 includes a sleeve 41 and a driving component 1. The crossbar 2 31 has three through holes 1. The lower end of the sleeve 41 is open and the upper end is closed. The top end of the sleeve 41 is fixedly installed with an upwardly extending connecting shaft, which is rotatably installed in the through hole 1. The inner wall of the sleeve 41 has multiple spiral grooves 411, and the lower end of the spiral grooves 411 penetrates the lower end face of the sleeve 41. The driving component 1 is used to drive the sleeve 41 to rotate. During electroplating, the lower ends of the two columns 2 32 are placed on two support platforms 12 respectively. At this time, the lower end of the sleeve 41 is located in the electroplating tank 1. The lower side of the upper end face, and the lower end of the sleeve 41 is located above the electroplating solution in the electroplating tank 1. After electroplating is completed, the mounting mechanism 5 causes the workpiece 7 to detach from the electroplating solution and enter the sleeve 41. Then, the driving component drives the sleeve 41 to rotate. When the sleeve 41 rotates, the workpiece 7 is driven to rotate through the mounting mechanism 5. When the workpiece 7 rotates, the electroplating solution remaining on its surface is thrown onto the inner wall of the sleeve 41 under the action of centrifugal force. The electroplating solution on the inner wall of the sleeve 41 flows downward under the guidance of the spiral groove 411 and is thrown out from the lower end of the sleeve 41. Since the lower end of the sleeve 41 is located in the electroplating tank 1, the electroplating solution thrown out enters the electroplating tank 1 from the lower end of the sleeve 41.

[0048] like Figures 2-3 As shown, the driving component includes a second motor 413, which is fixedly mounted on the second crossbar 31, and the output end of the second motor 413 is connected to the sleeve 41.

[0049] like Figures 2-6 and Figure 8As shown, the mounting mechanism 5 includes a lifting ring 51, multiple hanging rods 52, a second driving component, multiple lifting rods 53, and a third driving component. Two grooves 412 are formed on the inner circumferential wall of the sleeve 41 along the vertical direction. Two bosses 54 extend radially outward on the outer circumferential wall of the lifting ring 51. The two bosses 54 are slidably installed in the two grooves 412 along the vertical direction. The diameter of the lifting ring 51 is smaller than the diameter of the inner circumferential wall of the sleeve 41, thus creating a gap between the outer circumferential wall of the lifting ring 51 and the inner circumferential wall of the sleeve 41. The multiple hanging rods 52 are fixedly installed on the lower end face of the lifting ring 51, and are arranged in a circular array around the axis of the lifting ring 51. A collar is fixedly installed on the inner side of each hanging rod 52 to connect the multiple hanging rods 52 together, thereby improving the structural strength of the hanging rods 52. Multiple hooks are installed on each hanging rod 52. Multiple hooks 55 are evenly distributed on the hanging rod 52 in the vertical direction. Each hook 55 consists of a horizontal section and a vertical section. When the workpiece 7 is hung, the vertical section of the hook 55 first passes through the hole on the workpiece 7, and then the horizontal section of the hook 55 passes through the hole on the workpiece 7. Multiple through holes 2 are opened on the lifting ring 51. The lifting rod 53 is slidably installed in the through holes 2 in the vertical direction. The top of the lifting rod 53 extends beyond the upper end face of the lifting ring 51, and the lifting rod 53 is located between two adjacent hanging rods 52. Multiple limiting rods 56 are fixedly installed on the lifting rod 53. The limiting rods 56 are located outside the hooks 55. Multiple limiting rods 56 are evenly distributed on the lifting rod 53 in the vertical direction. The second driving component is used to drive the lifting ring 51 to move in the vertical direction within the sleeve 41. The third driving component is used to drive the lifting rod 53 to move in the vertical direction on the lifting ring 51.

[0050] Initially, the limit rod 56 is flush with the horizontal section of the hook 55 to prevent the workpiece 7 from deflecting outward on the hook 55 when it rotates. During electroplating, the lifting ring 51 is located at the lower end of the sleeve 41. After electroplating is completed, the driving component 2 moves the lifting ring 51 from the lower end of the sleeve 41 to the upper end of the sleeve 41. At this time, the top end of the lifting rod 53 abuts against the top end of the sleeve 41. Then, the sleeve 41 rotates, causing the hanging rod 52 to rotate, which in turn causes the workpiece 7 to rotate. When the workpiece 7 rotates, the electroplating liquid remaining on its surface is splashed onto the inner circumferential wall of the sleeve 41. After a period of time, the electroplating liquid remaining in the hole of the workpiece 7 has been removed. The workpiece 7 is thrown out, and then the second drive unit drives the lifting ring 51 to rise again. At the same time, the top of the lifting rod 53 is pressed against the upper end face of the inner side of the sleeve 41, causing the lifting rod 53 to move downward on the lifting ring 51. After the lifting rod 53 moves downward, the limiting rod 56 abuts against the vertical section of its adjacent lower hook 55. At this time, as the lifting ring 51 drives the workpiece 7 to rotate, the lower end of the workpiece 7 deflects outward under the action of centrifugal force until the hole of the workpiece 7 is fitted onto the vertical section of the hook 55. At this time, the electroplating liquid remaining on the surface of the workpiece 7 near the axis of the sleeve 41 can be thrown out from the workpiece 7 under the action of centrifugal force.

[0051] like Figure 5 and Figure 8 As shown, the driving component three includes multiple elastic elements, the elastic element being a spring 57. A ring platform is fixedly installed on the lifting rod 53, and the ring platform is located below the lifting ring 51. The upper and lower ends of the spring 57 are fixedly connected to the lower end face of the lifting ring 51 and the ring platform, respectively. When the lifting rod 53 moves downward on the lifting ring 51, the spring 57 is stretched and stores force. As the lifting ring 51 moves downward in the sleeve 41, the spring 57 gradually releases, causing the lifting rod 53 to gradually move upward on the lifting ring 51 and reset.

[0052] like Figures 3-8 As shown, the second drive component includes a rotating shaft 58 and a clutch assembly. A through hole 3 is provided at the center of the upper end of the sleeve 41. The rotating shaft 58 is inserted through and rotatably installed in the through hole 3. The output end of the second motor 413 is connected to the rotating shaft 58. A reciprocating screw extending downward is installed at the lower end of the rotating shaft 58. A through hole 4 is provided at the center of the lifting ring 51. The reciprocating screw is inserted in the through hole 4, and the lifting ring 51 and the reciprocating screw are threaded together. An clearance hole is provided in the spray rod 22. When cleaning the workpiece 7, the rotating shaft 58 is inserted in the clearance hole on the spray rod 22 in the cleaning pool 2.

[0053] After electroplating is completed, motor 413 rotates forward. At this time, the clutch assembly locks sleeve 41 and crossbar 31, and unlocks shaft 58 and sleeve 41. When motor 413 drives shaft 58 to rotate, the lifting ring 51 moves upward inside sleeve 41 because of the threaded engagement between the lifting ring 51 and the reciprocating screw. When the top of lifting rod 53 abuts against the upper end face of the inner side of sleeve 41, motor 413 rotates in the reverse direction. At this time, the clutch assembly locks shaft 58 and sleeve 41, and unlocks sleeve 41 and crossbar 31. As motor 413 drives shaft 58 to rotate in the reverse direction, shaft 58 drives sleeve 41 to rotate in the reverse direction, thereby causing lifting ring 51 to drive workpiece 7 on hanging rod 52 to rotate in the reverse direction, thus removing residual electroplating from the surface of workpiece 7. The plating solution is splashed onto the inner wall of the sleeve 41. When no more plating solution is splashed off the surface of the workpiece 7, the second motor 413 rotates in the forward direction. At this time, the clutch assembly locks the sleeve 41 and the second crossbar 31, and unlocks the shaft 58 and the sleeve 41. As the second motor 413 rotates in the forward direction, the lifting ring 51 moves further upward inside the sleeve 41, thereby causing the inner wall of the sleeve 41 to press against the lifting rod 53, causing the lifting rod 53 to move downward on the lifting ring 51. When the limit rod 56 abuts against the vertical section of its adjacent lower hook 55, the second motor 413 rotates in the reverse direction again. At this time, the clutch assembly locks the shaft 58 and the sleeve 41, and unlocks the sleeve 41 and the second crossbar 31, thereby causing the workpiece 7 to rotate again, further removing the plating solution from the workpiece 7 and further reducing the amount of plating solution remaining on the surface of the workpiece 7.

[0054] like Figure 6and Figure 7 As shown, the clutch assembly includes a first one-way bearing 59 and a second one-way bearing 510. The first one-way bearing 59 is installed in the through hole three on the sleeve 41, and the inner ring and outer ring of the first one-way bearing 59 are fixedly connected to the rotating shaft 58 and the sleeve 41, respectively. The second one-way bearing 510 is sleeved on the connecting shaft, and the inner ring and outer ring of the second one-way bearing 510 are fixedly connected to the sleeve 41 and the bracket 3, respectively. When the second motor 413 rotates in the forward direction, the inner ring and outer ring of the second one-way bearing 510 do not rotate relative to each other. When the second motor 413 rotates in the reverse direction, the inner ring and outer ring of the first one-way bearing 59 do not rotate relative to each other.

[0055] The specific working principle of this invention:

[0056] During electroplating, the worker first hangs the workpiece 7 on the hook 55. After the workpiece 7 is hung, the motor 413 rotates forward, and the lifting ring 51 moves upward inside the sleeve 41, so that the workpiece 7 is retracted into the sleeve 41. At this time, the boss 65 is located below the boss 36. Then, the winch rewinds and drives the crossbar 64 to move upward. The boss 65 drives the support 3 to move upward through the boss 36. When the support 3 moves above the electroplating tank 1, the crossbar 64 moves downward, placing the lower ends of the two columns 32 on the two support platforms 12 respectively. Then, as the crossbar 64 continues to descend, the slider 33 moves to the lowest end of the slide groove 34, and the support rod 35 is placed in the clamping platform 11. Then, the motor 413 rotates forward, and the lifting ring 51 moves to the highest end on the reciprocating screw and then moves downward to the lowest end of the reciprocating screw, so that the workpiece 7 gradually extends out of the sleeve 41 and is immersed in the electroplating solution.

[0057] After electroplating is completed, motor 413 rotates forward first, and lifting ring 51 moves upward on reciprocating screw, causing workpiece 7 to be removed from the electroplating solution and immersed in sleeve 41. When the top of lifting rod 53 abuts against the upper end face of the inner side of sleeve 41, motor 413 rotates in reverse. At this time, one-way bearing 59 locks shaft 58 and sleeve 41, allowing sleeve 41 and crossbar 31 to rotate relative to each other. As motor 413 drives shaft 58 to rotate in reverse, shaft 58 drives sleeve 41 to rotate in reverse, which in turn causes lifting ring 51 to drive workpiece 7 on hanging rod 52 to rotate in reverse, thereby throwing the residual electroplating solution on the surface of workpiece 7 onto the inner wall of sleeve 41. The electroplating solution on the inner wall of sleeve 41 flows downward under the guidance of spiral groove 411 and is thrown out from the lower end of sleeve 41 into electroplating tank 1. When no more electroplating solution is thrown out from the surface of workpiece 7, motor 413 rotates forward. At this time, the one-way bearing 510 locks the sleeve 41 and the crossbar 31, and the shaft 58 and the sleeve 41 can rotate relative to each other. As the motor 413 rotates forward, the lifting ring 51 moves further upward inside the sleeve 41, which in turn causes the inner wall of the sleeve 41 to press against the lifting rod 53, causing the lifting rod 53 to move downward on the lifting ring 51. When the limit rod 56 abuts against the vertical section of its adjacent lower hook 55, the motor 413 rotates in the opposite direction again. At this time, the one-way bearing 59 locks the shaft 58 and the sleeve 41, and the sleeve 41 and the crossbar 31 can rotate freely, which in turn causes the workpiece 7 to rotate again. At this time, the lower end of the workpiece 7 deflects outward under the action of centrifugal force until the hole of the workpiece 7 is fitted onto the vertical section of the hook 55. At this time, the electroplating liquid remaining on the surface of the workpiece 7 near the axis of the sleeve 41 can be thrown off the workpiece 7 under the action of centrifugal force.

[0058] After the workpiece 7 is dehydrated, the winch rewinds and moves the crossbar 64 upward, causing the lower end of the sleeve 41 to move above the electroplating tank 1. Then, the motor drives the traveling wheel to move the crossbeam 62, which in turn moves the crossbar 31 above the cleaning tank 2. Then, the winch unwinds and moves the crossbar 64 downward, which in turn moves the crossbar 31 downward. Since there is no support platform 12 on the cleaning tank 2, when the support rod 35 is placed in the clamping platform 21, the lower end of the column 32 is located inside the cleaning tank 2. At the same time, the water spray rod 22 is inserted into the collar. Then, the water pump pumps clean water into the water spray rod 22 through the water supply pipe. The clean water in the water spray rod 22 is sprayed onto the workpiece through the spray holes. At the same time, motor 413 rotates in the opposite direction, driving workpiece 7 to rotate, enhancing the cleaning effect on workpiece 7. After cleaning for a period of time, motor 413 rotates in the forward direction, causing lifting ring 51 to move upward first, and then lifting rod 53 to move downward on lifting ring 51. This causes limit rod 56 to move downward, pushing the already deflected workpiece 7 downward, so that workpiece 7 is reset. Then, as motor 413 rotates in the forward direction, lifting ring 51 moves to the uppermost end on reciprocating screw and then begins to move downward. After lifting rod 53 is reset on lifting ring 51, motor 413 rotates in the reverse direction again. At this time, as workpiece 7 rotates, clean water can rinse the inside of the hole of workpiece 7.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A metal part inner diameter electroplating apparatus, comprising an electroplating tank (1), a cleaning tank (2), electroplating racks, and a moving mechanism (6) for transferring the electroplating racks, characterized in that, Electroplating racks include: The bracket (3) is provided with a connecting part for connecting with the moving mechanism (6); The liquid removal mechanism (4) includes a sleeve (41) rotatably mounted on a bracket (3) and a drive component for driving the sleeve (41) to rotate. The lower end of the sleeve (41) is open and the upper end is closed. During electroplating, the bracket (3) is placed on the electroplating tank (1) and the lower end of the sleeve (41) is located inside the electroplating tank (1). The mounting mechanism (5) includes a lifting ring (51) that is slidably installed in the sleeve (41) in the up and down direction, a hanging rod (52) installed at the lower end of the lifting ring (51), and a driving component for driving the lifting ring (51) to rise and fall. The hanging rod (52) is used to mount the workpiece (7) and prevent the workpiece (7) from falling off when the workpiece (7) rotates. After electroplating is completed, the lifting ring (51) moves from the lower end of the sleeve (41) to the upper end. Then the sleeve (41) rotates, causing the lifting ring (51) to rotate, which in turn causes the hanging rod (52) to rotate the workpiece (7), thereby throwing the liquid on the surface of the workpiece (7) onto the inner wall of the sleeve (41).

2. The metal part inner diameter electroplating apparatus according to claim 1, characterized in that, The inner wall of the sleeve (41) is provided with a spiral groove (411) that extends through the lower end. When the liquid on the surface of the workpiece (7) is thrown onto the inner wall of the sleeve (41), the liquid flows downward under the guidance of the spiral groove (411) and enters the electroplating tank (1).

3. The metal part inner diameter electroplating apparatus according to claim 1, characterized in that, The first driving component includes a second motor (413) whose output end is connected to the sleeve (41), and the second motor (413) is fixedly mounted on the bracket (3).

4. The metal part inner diameter electroplating apparatus according to claim 3, characterized in that, The second drive unit includes a rotating shaft (58) rotatably mounted on a sleeve (41) and a clutch assembly set on the sleeve (41). The rotating shaft (58) passes through the sleeve (41) in a vertical direction. A reciprocating screw is fixedly mounted on the lower end of the rotating shaft (58). The reciprocating screw passes through a lifting ring (51), and the lifting ring (51) and the reciprocating screw are threaded together. After electroplating is completed, the second motor (413) rotates forward, and the clutch assembly locks the sleeve (41) and the bracket (3). When the lifting ring (51) moves to the upper end of the reciprocating screw, the second motor (413) reverses, and the clutch assembly locks the rotating shaft (58) and the sleeve (41).

5. The metal part inner diameter electroplating apparatus according to claim 4, characterized in that, The clutch assembly includes a one-way bearing (59) mounted on a rotating shaft (58) and a one-way bearing (510) mounted on a bracket (3). The inner and outer rings of the one-way bearing (59) are fixedly connected to the rotating shaft (58) and the sleeve (41) respectively. The inner and outer rings of the one-way bearing (510) are fixedly connected to the sleeve (41) and the bracket (3) respectively. When the motor (413) rotates forward, the inner and outer rings of the one-way bearing (510) do not rotate relative to each other. When the motor (413) rotates in reverse, the inner and outer rings of the one-way bearing (59) do not rotate relative to each other.

6. The metal part inner diameter electroplating apparatus according to claim 1, characterized in that, The connecting part includes two sliders (33) that are slidably installed on the left and right ends of the bracket (3) in the vertical direction. A support platform (12) is installed on the upper surface of the electroplating tank (1). When the bracket (3) is on the electroplating tank (1), the bottom end of the bracket (3) abuts against the support platform (12). At this time, the slider (33) is located at the lower end of the bracket (3). When the bracket (3) is on the cleaning tank (2), the bottom end of the bracket (3) is located inside the cleaning tank (2). At this time, the slider (33) is located at the upper end of the bracket (3), and the slider (33) abuts against the upper end of the cleaning tank (2).

7. The metal part inner diameter electroplating apparatus according to claim 1, characterized in that, The hanging rods (52) are provided on the lifting ring (51) in multiples, and the multiple hanging rods (52) are arranged in a circular array around the axis of the lifting ring (51).

8. The metal part inner diameter electroplating apparatus according to claim 7, characterized in that, The inner side of the hanging rod (52) is provided with a collar, which is used to connect multiple hanging rods (52) together. A water spray rod (22) is installed in the cleaning pool (2). During cleaning, the water spray rod (22) is inserted into the collar.

9. The metal part inner diameter electroplating apparatus according to claim 7, characterized in that, Multiple lifting rods (53) and a driving component for driving the lifting rods (53) to move are slidably installed on the lifting ring (51) along the up and down direction. The lifting rods (53) are located between two adjacent hanging rods (52). Multiple hooks (55) are provided on the hanging rods (52). The hooks (55) are composed of horizontal and vertical sections. Multiple limiting rods (56) are fixedly installed on the lifting rods (53). The limiting rods (56) are located outside the hooks (55). In the initial state, the limiting rods (56) are flush with the horizontal section of the hooks (55) to prevent the workpiece (7) from deflecting outward on the hooks (55) when it rotates. When the lifting rods (53) move downward, the limiting rods (56) abut against the vertical section of the adjacent lower hooks (55).

10. The metal part inner diameter electroplating apparatus according to claim 9, characterized in that, The driving component three includes an elastic element installed on the lifting ring (51), the elastic element being a spring (57), the two ends of the spring (57) being connected to the lifting ring (51) and the lifting rod (53) respectively, and the top end of the lifting rod (53) extending beyond the upper end face of the lifting ring (51).

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