Metal piece inner diameter electroplating device

Abstract

The invention relates to the technical field of electroplating, and particularly discloses a metal part inner diameter electroplating device which comprises an electroplating pool, a cleaning pool, an electroplating hanging tool and a moving mechanism used for transferring the electroplating hanging tool, the electroplating hanging tool comprises a support, and a liquid removing mechanism comprises a sleeve rotationally installed on the support and a first driving part used for driving the sleeve to rotate. During electroplating, the support is placed on the electroplating pool, and the lower end of the sleeve is located in the electroplating pool. The hanging mechanism comprises a lifting ring slidably installed in the sleeve in the vertical direction, a hanging rod installed at the lower end of the lifting ring and a second driving part used for driving the lifting ring to ascend and descend, after electroplating is completed, the lifting ring moves from the lower end of the sleeve to the upper end of the sleeve, then the sleeve rotates to drive the lifting ring to rotate, and then the hanging rod drives the workpiece to rotate; liquid on the surface of the workpiece is thrown out to the inner wall of the sleeve; the device has the beneficial effects that electroplating liquid on the surface of a workpiece can be separated, and air in a workshop cannot be polluted.

Description

Technical Field

[0001] The invention relates to the technical field of electroplating, and in particular to a device for electroplating the inner diameter of a metal part. Background Art

[0002] Electroplating of metal parts is a surface treatment technology based on electrochemical principles. It deposits metal or alloy coatings on the surface of the substrate to improve its corrosion resistance, wear resistance, conductivity or decorativeness. The core process is to immerse the metal workpiece as the cathode in an electrolyte containing the target metal ions, and drive the electrolytic reaction through an external DC power supply to reduce the metal ions on the cathode surface and form a uniform and dense coating. The electroplating device usually consists of a pretreatment unit, an electroplating tank, a power supply system and auxiliary equipment. The pretreatment stage includes steps such as degreasing, pickling and activation to ensure that the surface of the workpiece is clean and has good adhesion. The electroplating tank is equipped with an anode (usually a coating metal or an inert material) and a cathode (the workpiece), and the electrolyte is prepared by metal salts, conductive agents and additives. After power is turned on, the anode metal dissolves to replenish the metal ions in the electrolyte, and an ion reduction reaction occurs on the cathode surface, and metal atoms are deposited layer by layer. The device ensures the thickness and uniformity of the coating through hanger design, electrolyte circulation filtration, temperature control and current density adjustment. For example, zinc plating protects steel parts through the sacrificial anode mechanism, chrome plating uses high hardness to enhance wear resistance, and nickel plating is often used to improve conductivity or decorative effects. Such technologies are used in automotive parts, electronic components, mechanical accessories and other fields to meet diverse functional requirements.

[0003] A Chinese patent document with announcement number CN118516726B discloses an electroplating device and method for surface treatment of metal products, including an electroplating pool, a first linear slide, a second linear slide, a mounting plate, a nozzle and an electroplating rack. A plurality of partitions are arranged in the electroplating pool, and the plurality of partitions divide the electroplating pool into a plurality of separate chambers for accommodating electroplating solutions of different components. The first linear slide is mounted on the upper end of the electroplating pool for sliding in a horizontal direction, the second linear slide is mounted on the first linear slide for sliding in a vertical direction, the mounting plate is mounted on the second linear slide, the nozzle is arranged on the mounting plate, the electroplating rack is mounted on the mounting plate, the workpiece is hung on the electroplating rack, and then the second linear slide is used to control the electroplating rack to descend into the corresponding electroplating tank. After a period of electroplating, the second linear slide is used to control the electroplating rack to rise, so that the workpiece is separated from the electroplating solution, and then the nozzle blows air downward to blow off the electroplating solution on the surface of the workpiece.

[0004] In the above-mentioned technology, in order to prevent the plating solution remaining on the surface of the workpiece in the previous plating tank from being brought into the next plating tank, which may reduce the purity of the plating solution and the plating effect in the next plating tank, and also increase the cost of plating solution maintenance. Therefore, after the workpiece is removed from the plating solution, the plating solution on the surface of the workpiece is blown off by means of blowing. However, since the length of some plating fixtures in the vertical direction is relatively long, after the plating fixture is completely lifted out of the plating solution, the upper side of the plating fixture is located above the plating tank. During the process of blowing the plating solution off the surface of the workpiece, the plating solution may be blown outside the plating tank or into other plating tanks, and during the blowing process, the plating solution will be blown into the air, thus polluting the air in the workshop and endangering the physical health of the workers. Summary of the Invention

[0005] The present invention provides an inner diameter plating device for metal parts, aiming to solve the technical problem in the related technology that the plating solution is blown into the air, thus polluting the air in the workshop and endangering the physical health of the workers.

[0006] An inner diameter plating device for metal parts includes a plating tank, a cleaning tank, a plating fixture, and a moving mechanism for transferring the plating fixture. The plating fixture includes: A bracket provided with a connecting portion for connecting with the moving mechanism; A liquid discharging mechanism, including a sleeve rotatably installed on the bracket and a driving member I for driving the sleeve to rotate. The lower end of the sleeve is open and the upper end is closed. During plating, the bracket is placed on the plating tank, and the lower end of the sleeve is located inside the plating tank; A mounting mechanism, including a lifting ring slidably installed in the sleeve in the up-and-down direction, a hanging rod installed at the lower end of the lifting ring, and a driving member II for driving the lifting ring to lift and lower. The hanging rod is used for mounting the workpiece and preventing the workpiece from falling off when the workpiece rotates; After plating is completed, the lifting ring moves from the lower end of the sleeve to the upper end, and then the sleeve rotates to drive the lifting ring to rotate, so that the hanging rod drives the workpiece to rotate, thereby throwing the liquid on the surface of the workpiece onto the inner wall of the sleeve.

[0007] By providing a sleeve on the bracket and the lower end of the sleeve being located inside the plating tank, and by providing a lifting ring inside the sleeve, during plating, the workpiece can move downward separately into the plating tank, with the sleeve located above the workpiece. When the workpiece moves upward after plating is completed, it first rises into the sleeve, and then by rotating the sleeve and the workpiece together, the residual plating solution on the surface of the workpiece can be thrown into the sleeve. And since the lower end of the sleeve is located inside the plating tank, the thrown plating solution will enter the plating tank from the lower end of the sleeve, without polluting the upper end of the plating tank or the adjacent cleaning tank, and the thrown plating solution is not easily dispersed into the air, avoiding air pollution and reducing damage to the physical health of the workers.

[0008] Preferably, a spiral groove penetrating through the lower end is formed on the inner wall of the sleeve. After 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 then enters the electroplating bath.

[0009] During the rotation of the sleeve, the spiral groove can more quickly throw the electroplating solution thrown out from the workpiece out of the lower end of the sleeve into the electroplating solution below it.

[0010] Preferably, the first driving member includes a second motor whose output end is connected to the sleeve, and the second motor is fixedly installed on the bracket.

[0011] Preferably, the second driving member includes a rotating shaft rotatably installed on the sleeve and a clutch assembly arranged on the sleeve. The rotating shaft penetrates through the sleeve in the vertical direction, and a reciprocating lead screw is fixedly installed at the lower end of the rotating shaft. The reciprocating lead screw penetrates through the lifting ring, and the lifting ring is in threaded fit with the reciprocating lead screw. 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 lead screw, the second motor rotates in reverse, and the clutch assembly locks the rotating shaft and the sleeve.

[0012] By providing the reciprocating lead screw, it can cooperate with the clutch assembly to make the lifting ring rise or fall in the sleeve.

[0013] Preferably, the clutch assembly includes a first one-way bearing installed on the rotating shaft and a second one-way bearing installed on the bracket. The inner ring and the outer ring of the first one-way bearing are respectively fixedly connected to the rotating shaft and the sleeve, and the inner ring and the outer ring of the second one-way bearing are respectively fixedly connected to the sleeve and the bracket. When the second motor rotates forward, the inner ring and the outer ring of the second one-way bearing do not rotate relative to each other. When the second motor rotates in reverse, the inner ring and the outer ring of the first one-way bearing do not rotate relative to each other.

[0014] By providing the first one-way bearing and the second one-way bearing, and then utilizing the characteristic that the reciprocating lead screw can reciprocate automatically, a simple structure is realized to control the switching between the reciprocating movement and the rotation of the lifting ring.

[0015] Preferably, the connecting portion includes two sliders slidably installed at the left and right ends of the bracket in the up and down direction. A support platform is installed on the upper end surface of the electroplating bath. When the bracket is located on the electroplating bath, the bottom end of the bracket abuts against the support platform. At this time, the sliders are located at the lower end of the bracket. When the bracket is located on the cleaning bath, the bottom end of the bracket is located in the cleaning bath. At this time, the sliders are located at the upper end of the bracket, and the sliders abut against the upper end of the cleaning bath.

[0016] Preferably, a plurality of hanging rods are arranged on the lifting ring, and the plurality of hanging rods are arranged in a circumferential array around the axis of the lifting ring.

[0017] Preferably, a sleeve ring is arranged on the inner side of the hanging rod. The sleeve ring is used to connect the plurality of hanging rods together. A water spraying rod is installed in the cleaning bath. During cleaning, the water spraying rod penetrates through the sleeve ring.

[0018] Preferably, a plurality of lifting rods and a third driving member for driving the lifting rods to move are slidably installed on the lifting ring in the vertical direction. The lifting rods are located between two adjacent hanging rods. A plurality of hooks are provided on the hanging rods. Each hook is composed of a horizontal section and a vertical section. A plurality of 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 sections of the hooks to prevent the workpiece from deflecting outward on the hooks when rotating. After the lifting rods move downward, the limiting rods abut against the vertical sections of the lower adjacent hooks.

[0019] Preferably, the third driving member includes an elastic member installed on the lifting ring. The elastic member is a spring. 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 surface of the lifting ring.

[0020] By providing the spring, the lifting rod can be automatically reset.

[0021] Adopting the above technical solution, the beneficial effects of the present invention are as follows: By providing a sleeve outside the workpiece, after the electroplating of the workpiece is completed, the electroplating solution on the surface of the workpiece is thrown out by rotating the workpiece in the sleeve. By providing a spiral groove in the sleeve, the electroplating solution can be thrown out faster from below the sleeve during the rotation of the sleeve. By setting the lower end of the sleeve in the electroplating bath and above the electroplating solution, the electroplating solution will directly enter the electroplating bath and will not cause too much impact on the air and the surrounding environment. By providing lifting rods on the lifting ring and using the blocking of the lifting rods, there are two states when the workpiece rotates, which is convenient for more comprehensively throwing out the electroplating solution on the surface of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 is a schematic diagram of the structure of the electroplating bath of the present invention.

[0024] Figure 3 is a front view of the electroplating fixture of the present invention.

[0025] Figure 4 is Figure 3 an enlarged view of part A in

[0026] Figure 5 is a schematic diagram of the structure of the hanging rod of the present invention.

[0027] Figure 6 is a sectional view of the sleeve of the present invention.

[0028] Figure 7 is a schematic diagram of the structure of the rotating shaft of the present invention.

[0029] Figure 8 This is a schematic structural diagram of the lifting rod of the present invention.

[0030] Figure 9 This is a front view of the overall structure of the present invention.

[0031] Reference numerals: 1. Electroplating bath; 11. First clamping platform; 12. Support platform; 2. Cleaning bath; 21. Second clamping platform; 22. Spraying rod; 3. Bracket; 31. Second cross bar; 32. Second column; 33. Slide block; 34. First chute; 35. Support rod; 36. Second boss; 4. Liquid discharging mechanism; 41. Sleeve; 411. Spiral groove; 412. Second chute; 413. Second motor; 5. Mounting mechanism; 51. Lifting ring; 52. Hanging rod; 53. Lifting rod; 54. Third boss; 55. Hook; 56. Limiting rod; 57. Spring; 58. Rotating shaft; 59. First one-way bearing; 510. Second one-way bearing; 6. Moving mechanism; 61. Track frame; 62. Cross beam; 63. First column; 64. First cross bar; 65. First boss; 7. Workpiece. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0033] As Figure 1 shown, a metal part inner diameter electroplating device according to an embodiment of the present invention includes an electroplating bath 1, a cleaning bath 2, an electroplating hanger, and a moving mechanism 6. The electroplating bath 1 is filled with electroplating solution for electroplating the workpiece 7. The cleaning bath 2 is used to rinse the workpiece 7 after electroplating to clean the electroplating solution remaining on the surface of the workpiece 7, so as to avoid contaminating the electroplating solution in the next electroplating bath 1. The electroplating hanger is used to mount the workpiece 7, and the moving mechanism 6 is used to lift the electroplating hanger and transfer the electroplating hanger from the electroplating bath 1 to the cleaning bath 2.

[0034] During electroplating, first, the worker hangs the workpiece 7 on the electroplating hanger, then the moving mechanism 6 raises the electroplating hanger, and then the moving mechanism 6 moves the electroplating hanger full of the workpiece 7 above the electroplating bath 1. Next, the moving mechanism 6 places the electroplating hanger downward on the electroplating bath 1. At this time, the workpiece 7 on the electroplating hanger is immersed in the electroplating solution. Finally, the workpiece 7 on the electroplating hanger starts electroplating. When the electroplating is completed, the moving mechanism 6 raises the electroplating hanger and transfers it to the cleaning bath 2. After the electroplating hanger enters the cleaning bath 2, the cleaning bath 2 starts to spray and rinse the workpiece 7.

[0035] As Figure 1 and Figure 2As shown in the figure, on the upper end face of the electroplating bath 1, clamping platforms 11 are installed on both the left and right sides. When the electroplating fixture is placed on the electroplating bath 1, the clamping platforms 11 are used to limit the electroplating fixture to prevent it from moving in the front-back direction or left-right direction.

[0036] As Figure 1 and Figure 2 shown in the figure, on the upper end face of the cleaning bath 2, clamping platforms 21 are installed on both the left and right sides. When the electroplating fixture is placed on the cleaning bath 2, the clamping platforms 21 are used to limit the electroplating fixture to prevent it from moving in the front-back direction or left-right direction. On the bottom surface of the cleaning bath 2, three water spray rods 22 extending upward are installed. A plurality of water spray holes are formed on the surface of the water spray rods 22. A water supply pipe is installed in the cleaning bath 2. The water supply pipe is externally connected to a water pump (not shown in the figure). When the electroplating fixture is placed on the cleaning bath 2, the water pump pumps clear water into the water spray rods 22 through the water supply pipe, and the clear water in the water spray rods 22 is sprayed onto the workpiece 7 mounted on the electroplating fixture through the water spray holes, thereby washing off the electroplating solution remaining on the surface of the just electroplated workpiece 7 to prevent the electroplating solution in the next electroplating bath 1 from being polluted due to the electroplating solution in the previous electroplating bath 1 remaining on the surface of the workpiece 7 when the workpiece 7 enters the next electroplating bath 1.

[0037] As Figure 1 and Figure 9 shown in the figure, the moving mechanism 6 includes a track frame 61, a cross beam 62, a lifting device, a winch, and a horizontal moving component. The track frame 61 is arranged on both the left and right sides of the electroplating bath 1 and the cleaning bath 2. The left and right ends of the cross beam 62 are placed on the track frame 61. The winch is fixedly installed on the cross beam 62. The lifting device is composed of a first cross bar 64 and two first columns 63. The two first columns 63 both extend downward and are respectively fixedly installed at the left and right ends of the lower end face of the first cross bar 64. A first boss 65 extends from the lower end of the first column 63 toward the electroplating bath 1. The first boss 65 is used to support the electroplating fixture when transferring the electroplating fixture. The extending end of the winch is fixedly connected to the first cross bar 64. When the winch winds up, it drives the first cross bar 64 to move upward. The horizontal moving component is used to drive the cross beam 62 to move in the front-back direction on the track frame 61.

[0038] As Figure 1 and Figure 9As shown in the figure, the horizontal moving component includes a plurality of traveling wheels and two first motors (not shown in the figure). A plurality of traveling wheels are rotatably installed at both the left and right ends of the lower end surface of the cross beam 62. The rotation axis of the traveling wheels extends in the vertical direction, and the traveling wheels are all in contact with the track frame 61. The two first motors are respectively fixedly installed at the left and right ends of the cross beam 62, and the output end of the first motor is connected to the traveling wheels. When moving the electroplating fixture from above the electroplating bath 1 to above the cleaning bath 2, the first motor drives the traveling wheels to rotate, so that the traveling wheels roll backward along the surface of the track frame 61, thereby driving the cross beam 62 to move backward on the track frame 61, and moving the electroplating fixture from above the electroplating bath 1 to above the cleaning bath 2.

[0039] As Figures 1-3 As shown in the figure, the electroplating fixture includes a bracket 3, a liquid discharging mechanism 4 and a mounting mechanism 5. The bracket 3 is composed of a second cross bar 31 and two second columns 32 to form a "C" shape with the opening facing downward. Connection parts for connecting with the first boss 65 are provided on the two second columns 32. The connection parts include two sliders 33 slidably installed on the two second columns 32 in the up and down direction. At the mutually remote ends of the two second columns 32, first chutes 34 extending in the up and down direction are provided. The two sliders 33 are respectively slidably installed in the two first chutes 34 in the up and down direction. The mutually remote ends of the two sliders 33 are provided with support rods 35 facing the direction in which they are mutually remote. When the bracket 3 is placed on the electroplating bath 1 or the cleaning bath 2, the support rods 35 are located in the first clamping platforms 11 or the second clamping platforms 21. The mutually remote ends of the two support rods 35 are respectively provided with second bosses 36. Two support platforms 12 are fixedly installed on the upper end surface of the electroplating bath 1, and the two support platforms 12 are respectively located on one side where the two first bosses 65 are mutually close. The liquid discharging mechanism 4 is used to rotate the workpiece 7, so as to throw the electroplating liquid remaining on the surface of the workpiece 7 into the electroplating bath 1. The mounting mechanism 5 is used to mount the workpiece 7.

[0040] When the workpiece 7 is electroplated in the electroplating bath 1, the lower ends of the two second columns 32 are respectively placed on the two support platforms 12. At this time, the slider 33 is at the lowermost end in the first chute 34, and the support rods 35 on the two sliders 33 are respectively located in the two first clamping platforms 11. After the electroplating is completed, the hanging mechanism 5 moves the workpiece 7 upward relative to the second cross bar 31. When the workpiece 7 is separated from the electroplating solution and enters the liquid discharging mechanism 4, the liquid discharging mechanism 4 rotates the workpiece 7 and throws the residual electroplating solution on the surface of the workpiece 7 into the electroplating bath 1. Then the winch first pays out the wire rope to make the lifting appliance move downward. When the first convex platform 65 is located below the second convex platform 36, the first motor drives the traveling wheels to rotate, so that the cross beam 62 moves on the track frame 61, thereby moving the first convex platform 65 to directly below the second convex platform 36. Then the winch winds up the wire rope to drive the second convex platform 36 to move upward through the first convex platform 65 by the first cross bar 64. When the slider 33 moves to the uppermost end of the first chute 34, the first convex platform 65 drives the second cross bar 31 to move upward through the second convex platform 36. When the liquid discharging mechanism 4 is located above the electroplating bath 1, the cross beam 62 moves backward, thereby driving the second cross bar 31 to move backward. When the workpiece 7 is located above the cleaning bath 2, the winch pays out the wire rope to make the first cross bar 64 move downward, thereby making the second cross bar 31 move downward. Since there is no support platform 12 on the cleaning bath 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 bath 2. When there are multiple electroplating baths 1 and cleaning baths 2, at this time, the second column 32 is located in the cleaning bath 2, and at this time, the liquid discharging mechanism 4 is also in the cleaning bath 2. While the water spraying rod 22 sprays water to clean the workpiece 7, it also cleans the liquid discharging mechanism 4. At the same time, the liquid discharging mechanism 4 located in the cleaning bath 2 can also vacate the space above the cleaning bath 2, so that the other brackets 3 can pass over from above this bracket 3.

[0041] As Figures 1-6As shown, there are three sets of liquid discharging mechanisms 4, and the three sets of liquid discharging mechanisms 4 are evenly distributed on the second cross bar 31 in the left - right direction. The liquid discharging mechanism 4 includes a sleeve 41 and a first driving member. Three first through - holes are formed in the second cross bar 31. The lower end of the sleeve 41 is open and the upper end is closed. A connecting shaft extending upward is fixedly installed at the top end of the sleeve 41, and the connecting shaft is rotatably installed in the first through - hole. A plurality of spiral grooves 411 are formed on the inner wall of the sleeve 41, and the lower ends of the spiral grooves 411 penetrate through the lower end surface of the sleeve 41. The first driving member is used to drive the sleeve 41 to rotate self - sufficiently. During electroplating, the lower ends of the two second columns 32 are respectively placed on two supporting platforms 12. At this time, the lower end of the sleeve 41 is located below the upper surface of the electroplating bath 1, and the lower end of the sleeve 41 is located above the electroplating solution in the electroplating bath 1. After electroplating is completed, the hanging mechanism 5 separates the workpiece 7 from the electroplating solution and moves it into the sleeve 41. Then, the first driving member drives the sleeve 41 to rotate. When the sleeve 41 rotates, it drives the workpiece 7 to rotate through the hanging 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 grooves 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 bath 1, the thrown - out electroplating solution enters the electroplating bath 1 from the lower end of the sleeve 41.

[0042] As Figures 2-3 shown, the first driving member includes a second motor 413. The second motor 413 is fixedly installed on the second cross bar 31, and the output end of the second motor 413 is connected to the sleeve 41.

[0043] As Figures 2-6 and Figure 8As shown in the figure, the mounting mechanism 5 includes a lifting ring 51, multiple hanging rods 52, a second driving member, multiple lifting rods 53 and a third driving member. Two second chutes 412 are provided on the inner peripheral wall of the sleeve 41 in the up-and-down direction. Two third bosses 54 extend radially outward on the outer peripheral wall of the lifting ring 51. The two third bosses 54 are respectively slidably mounted in the two second chutes 412 in the up-and-down direction, and the diameter of the lifting ring 51 is smaller than the diameter of the inner peripheral wall of the sleeve 41, so that there is a gap between the outer peripheral wall of the lifting ring 51 and the inner peripheral wall of the sleeve 41. Multiple hanging rods 52 are fixedly mounted on the lower end surface of the lifting ring 51, and the multiple hanging rods 52 are arranged in a circumferential array around the axis of the lifting ring 51. A collar is fixedly mounted on the inner side of the hanging rod 52, and the collar is used to connect the multiple hanging rods 52 together to improve the structural strength of the hanging rod 52. Multiple hooks 55 are mounted on the hanging rod 52, and the multiple hooks 55 are evenly distributed on the hanging rod 52 in the up-and-down direction. The hook 55 is composed of a horizontal section and a vertical section. When mounting the workpiece 7, the vertical section of the hook 55 first passes through the hole in the workpiece 7, and then the horizontal section of the hook 55 is inserted into the hole in the workpiece 7. Multiple through holes two are provided in the lifting ring 51 and penetrate up and down. The lifting rod 53 is slidably mounted in the through hole two in the up-and-down direction. The top end of the lifting rod 53 extends beyond the upper end surface of the lifting ring 51, and the lifting rod 53 is located between two adjacent hanging rods 52. Multiple limiting rods 56 are fixedly mounted on the lifting rod 53, and the limiting rods 56 are located outside the hook 55. The multiple limiting rods 56 are evenly distributed on the lifting rod 53 in the up-and-down direction. The second driving member is used to drive the lifting ring 51 to move up and down in the sleeve 41, and the third driving member is used to drive the lifting rod 53 to move up and down on the lifting ring 51.

[0044] In the initial state, the limiting rod 56 is flush with the horizontal section of the hook 55, which is used to prevent the workpiece 7 from deflecting outward on the hook 55 when rotating. During electroplating, the lifting ring 51 is located at the lower end inside the sleeve 41. After electroplating is completed, the second driving member moves the lifting ring 51 from the lower end inside the sleeve 41 to the upper end inside the sleeve 41. At this time, the top end of the lifting rod 53 abuts against the top end of the sleeve 41, and then the sleeve 41 rotates to drive the hanging rod 52 to rotate, thereby driving the workpiece 7 to rotate. When the workpiece 7 rotates, the residual electroplating solution on its surface is thrown onto the inner peripheral wall of the sleeve 41. After a period of time, the residual electroplating solution in the hole of the workpiece 7 has been thrown out. Then the second driving member drives the lifting ring 51 to rise again. At the same time, the top end of the lifting rod 53 presses against the upper end surface inside the sleeve 41 to make the lifting rod 53 move downward on the lifting ring 51. When the lifting rod 53 moves downward, the limiting rod 56 abuts against the vertical section of the 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 sleeved on the vertical section of the hook 55. At this time, it is convenient for the residual electroplating solution on the surface of the workpiece 7 near the axis of the sleeve 41 to be thrown out of the workpiece 7 under the action of centrifugal force.

[0045] As Figure 5 and Figure 8 shown, the third driving member includes a plurality of elastic members, and the elastic members are springs 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 respectively fixedly connected to the lower end surface of the lifting ring 51 and the ring platform. When the lifting rod 53 moves downward on the lifting ring 51, the spring 57 is stretched and stores energy at this time. 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 and reset on the lifting ring 51.

[0046] As Figures 3-8 shown, the second driving member includes a rotating shaft 58 and a clutch assembly. A through hole three that penetrates up and down is opened at the center of the upper end surface of the sleeve 41. The rotating shaft 58 is inserted and rotatably installed in the through hole three. The output end of the second motor 413 is connected to the rotating shaft 58. A reciprocating lead screw extending downward is installed at the lower end of the rotating shaft 58. A through hole four that penetrates up and down is opened at the center of the lifting ring 51. The reciprocating lead screw is inserted into the through hole four, and the lifting ring 51 is in threaded engagement with the reciprocating lead screw. An avoidance hole that penetrates the upper end is opened in the water spraying rod 22. When cleaning the workpiece 7, the rotating shaft 58 is inserted into the avoidance hole on the water spraying rod 22 when it is in the cleaning tank 2.

[0047] After electroplating is completed, the second motor 413 rotates forward. At this time, the clutch assembly locks the sleeve 41 and the second cross bar 31, and unlocks the rotating shaft 58 and the sleeve 41. When the second motor 413 drives the rotating shaft 58 to rotate at this time, since the lifting ring 51 is in threaded engagement with the reciprocating lead screw, the lifting ring 51 moves upward in the sleeve 41. When the top end of the lifting rod 53 abuts against the upper end surface inside the sleeve 41, the second motor 413 rotates in the reverse direction. At this time, the clutch assembly locks the rotating shaft 58 and the sleeve 41, and unlocks the sleeve 41 and the second cross bar 31. As the second motor 413 drives the rotating shaft 58 to rotate in the reverse direction, the rotating shaft 58 drives the sleeve 41 to rotate in the reverse direction, so that the lifting ring 51 drives the workpiece 7 on the hanging rod 52 to rotate in the reverse direction, thereby throwing the residual electroplating solution on the surface of the workpiece 7 onto the inner wall of the sleeve 41. When no more electroplating solution is thrown out from the surface of the workpiece 7, the second motor 413 rotates forward. At this time, the clutch assembly locks the sleeve 41 and the second cross bar 31, and unlocks the rotating shaft 58 and the sleeve 41. As the second motor 413 rotates forward, the lifting ring 51 further moves upward in the sleeve 41, so that the inner wall of the sleeve 41 presses against the lifting rod 53, causing the lifting rod 53 to move downward on the lifting ring 51. When the limiting rod 56 abuts against the vertical section of the adjacent lower hook 55, the second motor 413 rotates in the reverse direction again. At this time, the clutch assembly locks the rotating shaft 58 and the sleeve 41, and unlocks the sleeve 41 and the second cross bar 31, so that the workpiece 7 rotates again to further drain the liquid from the workpiece 7 and further reduce the residual electroplating solution on the surface of the workpiece 7.

[0048] As Figure 6And Figure 7 As shown in Figure 7 , the clutch assembly includes a one-way bearing I 59 and a one-way bearing II 510. The one-way bearing I 59 is installed in the through hole III on the sleeve 41, and the inner ring and the outer ring of the one-way bearing I 59 are fixedly connected to the rotating shaft 58 and the sleeve 41 respectively. The one-way bearing II 510 is sleeved on the connecting shaft, and the inner ring and the outer ring of the one-way bearing II 510 are fixedly connected to the sleeve 41 and the bracket 3 respectively. When the motor II 413 rotates forward, the inner ring and the outer ring of the one-way bearing II 510 do not rotate relative to each other. When the motor II 413 rotates reversely, the inner ring and the outer ring of the one-way bearing I 59 do not rotate relative to each other.

[0049] The specific working principle of the present invention: During electroplating, first, the worker hangs the workpiece 7 on the hook 55. After the workpiece 7 is hung, the motor II 413 rotates forward, and the lifting ring 51 moves upward in the sleeve 41, so that the workpiece 7 is received into the sleeve 41. At this time, the first boss 65 is located below the second boss 36. Then, the winch winds up and drives the first cross bar 64 to move upward. The first boss 65 drives the bracket 3 to move upward through the second boss 36. When the bracket 3 moves above the electroplating bath 1, the first cross bar 64 moves downward, and the lower ends of the two second columns 32 are respectively placed on the two support platforms 12. Then, as the first cross bar 64 continues to descend, the slider 33 moves to the lowermost end in the first chute 34, and the support rod 35 is placed in the first clamping table 11. Then, the motor II 413 rotates forward, and the lifting ring 51 moves to the uppermost end on the reciprocating screw and then starts to move downward to the lowermost end of the reciprocating screw, so that the workpiece 7 gradually extends out of the sleeve 41 and is immersed in the electroplating solution.

[0050] After electroplating is completed, the second motor 413 rotates forward first, and the lifting ring 51 moves upward on the reciprocating lead screw, causing the workpiece 7 to be removed from the electroplating solution and immersed in the sleeve 41. After the top end of the lifting rod 53 abuts against the upper end face inside the sleeve 41, the second motor 413 rotates in the reverse direction. At this time, the one-way bearing 59 locks the rotating shaft 58 and the sleeve 41. The sleeve 41 and the second cross bar 31 can rotate relative to each other. As the second motor 413 drives the rotating shaft 58 to rotate in the reverse direction, the rotating shaft 58 drives the sleeve 41 to rotate in the reverse direction, and then the lifting ring 51 drives the workpiece 7 on the hanging rod 52 to rotate in the reverse direction, so as to fling the electroplating solution remaining on the surface of the workpiece 7 onto the inner wall of the sleeve 41. 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 into the electroplating tank 1. After no more electroplating solution is flung from the surface of the workpiece 7, the second motor 413 rotates forward. At this time, the one-way bearing 510 locks the sleeve 41 and the second cross bar 31. The rotating shaft 58 and the sleeve 41 can rotate relative to each other. As the second motor 413 rotates forward, the lifting ring 51 moves further upward in the sleeve 41, and then the inner wall of the sleeve 41 presses against the lifting rod 53, causing the lifting rod 53 to move downward on the lifting ring 51. After the limiting rod 56 abuts against the vertical section of the adjacent lower hook 55, the second motor 413 rotates in the reverse direction again. At this time, the one-way bearing 59 locks the rotating shaft 58 and the sleeve 41. The sleeve 41 and the second cross bar 31 can rotate freely, and then the workpiece 7 rotates 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 sleeved on the vertical section of the hook 55. At this time, it is convenient for the electroplating solution remaining on the surface of the workpiece 7 on the side close to the axis of the sleeve 41 to be flung out from the workpiece 7 under the action of centrifugal force.

[0051] After the workpiece 7 is de-liquified, the winch winds up to drive the cross bar one 64 to move upward, so that the lower end of the sleeve 41 moves above the electroplating bath 1. Then, the motor one drives the traveling wheels to drive the cross beam 62 to move, and further moves the cross bar two 31 above the cleaning bath 2. Then, the winch unwinds to make the cross bar one 64 move downward, and further drives the cross bar two 31 to move downward. Since there is no support platform 12 on the cleaning bath 2, when the support rod 35 is placed in the clamping platform two 21, the lower end of the column two 32 is located in the cleaning bath 2. At the same time, the water spraying rod 22 is inserted into the collar. Then, the water pump pumps the clear water into the water spraying rod 22 through the water supply pipe. The clear water in the water spraying rod 22 is sprayed on the workpiece 7 through the water spraying holes. At the same time, the motor two 413 rotates reversely to drive the workpiece 7 to rotate, enhancing the cleaning effect on the workpiece 7. After cleaning for a period of time, the motor two 413 rotates forward, making the lifting ring 51 move upward first, and further making the lifting rod 53 move downward on the lifting ring 51. Thus, when the limiting rod 56 moves downward, it pushes the deflected workpiece 7 downward to reset the workpiece 7. Then, with the forward rotation of the motor two 413, the lifting ring 51 moves to the uppermost end on the reciprocating lead screw and then starts to move downward. When the lifting rod 53 is reset on the lifting ring 51, the motor two 413 rotates reversely again. At this time, with the rotation of the workpiece 7, the clear water can wash the holes of the workpiece 7.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations of the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An inner diameter electroplating device for metal parts, comprising an electroplating bath (1), a cleaning bath (2), an electroplating fixture, and a moving mechanism (6) for transferring the electroplating fixture, characterized in that, The electroplating fixture includes: A bracket (3) provided with a connecting portion for connecting to a moving mechanism (6); A liquid discharging mechanism (4) including a sleeve (41) rotatably mounted on the bracket (3) and a first driving member 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 bath (1), and the lower end of the sleeve (41) is located inside the electroplating bath (1); A mounting mechanism (5) including a lifting ring (51) slidably mounted in the sleeve (41) in the vertical direction, a hanging rod (52) mounted at the lower end of the lifting ring (51), and a second driving member for driving the lifting ring (51) to lift and lower. The hanging rod (52) is used for mounting the workpiece (7) and preventing 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, and then the sleeve (41) rotates to drive the lifting ring (51) to rotate, so that the hanging rod (52) drives the workpiece (7) to rotate, thereby throwing the liquid on the surface of the workpiece (7) onto the inner wall of the sleeve (41).

2. The inner diameter electroplating device for metal parts according to claim 1, characterized in that, A spiral groove (411) penetrating through the lower end is formed on the inner wall of the sleeve (41). After 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 thus enters the electroplating bath (1).

3. The inner diameter electroplating device for metal parts according to claim 1, characterized in that, The first driving member 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. A metal part inner diameter electroplating device according to claim 3, characterized in that, The second driving member includes a rotating shaft (58) rotatably mounted on the sleeve (41) and a clutch assembly provided on the sleeve (41). The rotating shaft (58) penetrates through the sleeve (41) in the vertical direction. A reciprocating lead screw is fixedly mounted at the lower end of the rotating shaft (58), and the reciprocating lead screw penetrates through the lifting ring (51), and the lifting ring (51) is in threaded cooperation with the reciprocating lead screw. 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 lead screw, the second motor (413) rotates in reverse, and the clutch assembly locks the rotating shaft (58) and the sleeve (41).

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

6. The inner diameter electroplating device for metal parts according to claim 1, characterized in that, The connecting part includes two sliders (33) slidably mounted on the left and right ends of the bracket (3) in the up and down direction. A support platform (12) is mounted on the upper end surface of the electroplating bath (1). When the bracket (3) is located on the electroplating bath (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 located on the cleaning bath (2), the bottom end of the bracket (3) is located inside the cleaning bath (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 bath (2).

7. An inner diameter electroplating device for metal parts according to claim 1, characterized in that, A plurality of hanging rods (52) are provided on the lifting ring (51), and the plurality of hanging rods (52) are arranged in a circumferential array around the axis of the lifting ring (51).

8. A metal part inner diameter electroplating device according to claim 7, characterized in that A collar is provided inside the hanging rod (52). The collar is used to connect the plurality of hanging rods (52) together. A water spraying rod (22) is installed in the cleaning bath (2). During cleaning, the water spraying rod (22) passes through the collar.

9. The inner diameter electroplating device for metal parts according to claim 7, characterized in that, A plurality of lifting rods (53) and a driving member three for driving the lifting rods (53) to move are slidably mounted on the lifting ring (51) in the up and down direction. The lifting rods (53) are located between two adjacent hanging rods (52). A plurality of hooks (55) are provided on the hanging rods (52). The hook (55) is composed of a horizontal section and a vertical section. A plurality of limiting rods (56) are fixedly mounted 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 rotating. When the lifting rods (53) move downward, the limiting rods (56) abut against the vertical section of the adjacent lower hook (55).

10. A metal part inner diameter electroplating device according to claim 9, characterized in that, The driving member three includes an elastic member mounted on the lifting ring (51). The elastic member is a spring (57). The two ends of the spring (57) are respectively connected to the lifting ring (51) and the lifting rod (53). The top end of the lifting rod (53) extends beyond the upper end surface of the lifting ring (51).

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