Electroplating apparatus for three-dimensional metal workpiece and process thereof

Abstract

The application discloses a kind of electroplating device for three-dimensional metal workpiece and its process, including being arranged in the liquid circulation mechanism of cleaning pool both sides, cleaning pool inside is equipped with for driving three-dimensional metal workpiece immersion movement and is clamped and is conveyed mechanism, and the clamping end of liquid circulation mechanism drives clamped and is conveyed mechanism rotation to make three-dimensional metal workpiece rotation type movement in cleaning pool;Clamped and are conveyed mechanism includes being arranged in the lower passive wheel of cleaning pool feed end, and the upper driving wheel of being arranged in the discharge end of cleaning pool, and the upper driving wheel is connected between lower passive wheel by drive chain, and the two sides of drive chain are respectively equipped with multiple uniform distribution multidirectional rotation clamping assembly, and multidirectional rotation clamping assembly between two position matching and being made into a group are connected by tension elastic cord, and the side surface of single multidirectional rotation clamping assembly is connected between drive chain by rotation stretch assembly, the cleaning and transfer work of metal workpiece are realized in the application, avoid the pollution of subsequent plating solution after plating layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal electroplating, in particular to an electroplating device for three-dimensional metal workpieces and a process thereof. BACKGROUND

[0002] Electroplating is a process of plating a thin layer of other metals or alloys on the surface of certain metals by electrolysis, which is a process of attaching a metal film to the surface of metal or other material parts by electrolysis to prevent metal oxidation (such as rust), improve wear resistance, electrical conductivity, light reflectivity, corrosion resistance (copper sulfate, etc.), and enhance aesthetics. The outer layer of many coins is also electroplated.

[0003] The existing electroplating device sets electroplating and cleaning on the same production line, i.e., sets multiple electroplating tanks and cleaning tanks in series, uses a gantry to drive the metal workpiece to sink and immerse into the electroplating tank, lifts it after electroplating, moves it along the gantry to the cleaning tank, and then moves it to the electroplating tank in turn, and repeats the operation until the entire electroplating process is completed. However, the cleaning in the prior art is limited to immersion in the cleaning liquid, and the cleaning effect is not good enough, which easily contaminates other electroplating tanks, especially for expensive electroplating tanks, the loss caused by contamination is great. SUMMARY

[0004] The present application aims to provide an electroplating device for three-dimensional metal workpieces and a process thereof to solve the technical problem that the immersion cleaning method in the prior art has a poor cleaning effect, which easily contaminates other electroplating tanks, especially for expensive electroplating tanks, the loss caused by contamination is great.

[0005] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0006] An electroplating device for three-dimensional metal workpieces, comprising a cleaning tank arranged downstream of a metal plating liquid tank, and liquid circulation mechanisms arranged on both sides of the cleaning tank, the cleaning tank is internally provided with a clamping conveying mechanism for driving the three-dimensional metal workpiece to immerse and move, the clamping conveying mechanism is used to drive the three-dimensional metal workpiece to move linearly in the interior of the cleaning tank, and the liquid circulation mechanisms drive the clamping end of the clamping conveying mechanism to rotate so that the three-dimensional metal workpiece moves in a rotating manner in the cleaning tank.

[0007] The clamping conveying mechanism comprises a lower passive wheel arranged at the feeding end of the cleaning tank and an upper driving wheel arranged at the discharging end of the cleaning tank, the upper driving wheel is connected with the lower passive wheel through a driving chain, a plurality of multi-direction rotating clamping assemblies are arranged on both sides of the driving chain, two multi-direction rotating clamping assemblies matched in position and forming a group are connected through a tension elastic rope, and the side surface of a single multi-direction rotating clamping assembly is connected with the driving chain through a rotating stretching assembly;

[0008] The multi-direction rotating clamping assemblies in each group are used to limit the spacing between the multi-direction rotating clamping assemblies in each group through the tension elastic rope to clamp the three-dimensional metal workpieces of different lengths, the rotating stretching assembly drives the multi-direction rotating clamping assemblies to be close to the driving chain to realize the immersion cleaning of the three-dimensional metal workpieces, and the liquid circulating mechanism drives the clamping end of the multi-direction rotating clamping assembly to rotate, so that the three-dimensional metal workpieces are forced to rotate and move in the cleaning tank for cleaning.

[0009] As a preferred scheme of the present application, the multi-direction rotating clamping assembly comprises a clamping plate and a rotating waterwheel arranged at the clamping end of the clamping plate, the lower end of the clamping plate is provided with a movable hinge, and the movable hinge is movably arranged on the surface end of the driving chain through the rotating stretching assembly;

[0010] The two clamping plates of each group of multi-direction rotating clamping assemblies change the spacing between the clamping plates by rotating around the movable hinge, so that the three-dimensional metal workpieces of different lengths are clamped between the two clamping plates;

[0011] Each clamping plate changes the vertical distance between the clamping end of the clamping plate and the surface of the driving chain through the rotating stretching assembly, so that the three-dimensional metal workpieces are immersed or exposed in the liquid of the cleaning tank, and the liquid circulating mechanism drives the rotating waterwheel to rotate, so that the three-dimensional metal workpieces move and clean in the liquid of the cleaning tank.

[0012] As a preferred scheme of the present application, the clamping end of each clamping plate is provided with a circular perforation, a transverse straight rod is arranged in the circular perforation, an extrusion pad is arranged at the inner end of the transverse straight rod, the three-dimensional metal workpiece is fixed between the extrusion pads of each group of clamping plates, the rotating waterwheel is fixedly arranged at the outer end of the transverse straight rod, the liquid discharged by the liquid circulating mechanism drives the rotating waterwheel to rotate, so that the extrusion pad drives the three-dimensional metal workpiece to rotate, and the three-dimensional metal workpiece moves and cleans in the liquid of the cleaning tank under the driving of the driving chain.

[0013] As a preferred scheme of the present application, the movable hinge comprises a hollow tube arranged at the lower end of the clamping plate, and a first solid cylinder inserted into the hollow tube, the first solid cylinder being provided with an insertion slot at the end thereof facing the end of the rotating stretching assembly, and the clamping plate being capable of rotating in and out around the first solid cylinder through the hollow tube, so as to change the distance between the two clamping plates to clamp the three-dimensional metal workpieces of different lengths.

[0014] As a preferred scheme of the present application, the rotating stretching assembly comprises a fixed column arranged on the driving chain, one end of the first solid cylinder being sleeved outside the fixed column and rotating around the fixed column through the insertion slot, the upper surface of the driving chain being provided with a U-shaped support corresponding to the position of the other end of the first solid cylinder, the U-shaped support limiting the stable rotation of the clamping plate around the first solid cylinder through the hollow tube, and the side of the fixed column being provided with a stretching spring connected with the clamping plate, the clamping plate being capable of rotating around the fixed column to be close to the driving chain under the action of the stretching spring.

[0015] As a preferred scheme of the present application, the lower passive wheel is below the liquid level of the cleaning pool, the upper driving wheel is above the liquid level of the cleaning pool, the distance between the lower passive wheel and the upper driving wheel and the corresponding two ends of the cleaning pool is the length of the clamping plate, the distance between the lower passive wheel and the bottom of the cleaning pool is the length of the clamping plate, and the liquid level of the cleaning pool is below the clamping end of the clamping plate at the position of the lower passive wheel.

[0016] As a preferred scheme of the present application, the liquid circulating mechanism comprises a three-dimensional frame plate arranged on both sides of the cleaning pool, and a plurality of drainage openings arranged at the bottom of the cleaning pool, each of the drainage openings being connected with a circulating pipeline, the circulating pipeline being provided with a pressure water pump, the output end of the pressure water pump being provided with a tree-shaped branch pipeline fixed in the inside of the three-dimensional frame plate, the tree-shaped branch pipelines being uniformly arranged between the lower passive wheel and the upper driving wheel, and the opening end of the tree-shaped branch pipeline being provided with a water outlet slit along the moving direction of the three-dimensional metal workpiece.

[0017] As a preferred scheme of the present application, the rotating waterwheel is always partially above the liquid level of the cleaning pool from the upper driving wheel to the lower passive wheel, the water outlet slit of the tree-shaped branch pipeline close to the upper driving wheel is close to the central position of the driving chain, the tree-shaped branch pipelines close to the upper driving wheel are distributed above the driving chain and parallel to the driving chain.

[0018] To solve the above technical problems, the present application further provides the following technical scheme: an electroplating process of an electroplating device for three-dimensional metal workpieces, comprising the following steps:

[0019] Step 100, using the gantry mobile frame to immerse the decontamination activated three-dimensional metal workpiece into the metal solution for electroplating;

[0020] Step 200, dismounting the three-dimensional metal workpiece after plating from the gantry mobile frame, and transferring the three-dimensional metal workpiece after plating to the cleaning tank, fixing and clamping both ends of the three-dimensional metal workpiece by the clamping plate installed on the driving chain, and driving the three-dimensional metal workpiece to move in the cleaning tank;

[0021] Step 300, the clamping plate is tilted to immerse into the cleaning tank under the action of tension, and the rotating waterwheel at the clamping end of the clamping plate is subjected to the force of the circulating water flow of the cleaning tank to drive the clamping end and the three-dimensional metal workpiece to rotate, and the linear driving of the driving chain is cooperated to realize the rotational displacement cleaning of the three-dimensional metal workpiece.

[0022] As a preferred scheme of the present application, when the clamping plate is transmitted on the upper layer of the driving chain, the rotating stretching assembly drives the clamping plate to tilt close to the driving chain, so that the three-dimensional metal workpiece is immersed into the cleaning tank, when the clamping plate is transmitted on the lower layer of the driving chain, the clamping plate is reversely rotated to the state perpendicular to the driving chain under the action of gravity, and when the driving chain rotates to the feeding end of the three-dimensional metal workpiece, the clamping plate is rotated to the state perpendicular to the driving chain under the action of water pressure.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The present application changes the existing immersion cleaning to rotational displacement cleaning, which can realize the cleaning and transfer of the metal workpiece, avoids the pollution of the subsequent plating solution, and effectively ensures the purity of each plating solution. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0026] Figure 1 The overall side sectional structure schematic diagram of the electroplating device provided by the embodiment of the present application;

[0027] Figure 2 The structure schematic diagram of the multi-directional rotating clamping assembly provided by the embodiment of the present application;

[0028] Figure 3 A side view of the liquid circulation mechanism provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the electroplating process provided in an embodiment of the present invention.

[0030] The labels in the diagram represent the following:

[0031] 1-Washing tank; 2-Liquid circulation mechanism; 3-Clamping and conveying mechanism; 4-Multi-directional rotating clamping assembly; 5-Tensioning elastic rope; 6-Rotating tensioning assembly; 7-Circular perforation; 8-Transverse straight bar; 9-Extrusion pad;

[0032] 31-Lower driven pulley; 32-Upper driving pulley; 33-Drive chain;

[0033] 41-Clamping plate; 42-Rotating waterwheel; 43-Modible hinge;

[0034] 431-Hollow tube; 432-First solid cylinder; 433-Insertion hole slot;

[0035] 61-Fixed post; 62-U-shaped bracket; 63-Tension spring;

[0036] 21-Three-dimensional frame panel; 22-Drain outlet; 23-Circulation pipe; 24-Pressure water pump; 25-Tree-shaped branch pipe; 26-Flat outlet. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, the present invention provides an electroplating apparatus for three-dimensional metal workpieces. In order to avoid contamination of the electroplating bath and improve the cleaning ability of the metal workpieces, this embodiment replaces the existing immersion cleaning with a rotary moving cleaning. This not only achieves the cleaning of the metal workpieces, but also the transfer of the metal workpieces, thus avoiding contamination of the electroplating solution for subsequent plating layers.

[0039] The electroplating device specifically comprises a cleaning tank 1 arranged downstream of a metal plating solution tank, and liquid circulating mechanisms 2 arranged on both sides of the cleaning tank 1, the cleaning tank 1 is internally provided with a clamping conveying mechanism 3 for driving the immersion movement of the three-dimensional metal workpiece, the clamping conveying mechanism 3 is used for driving the linear movement of the three-dimensional metal workpiece in the cleaning tank 1, and the liquid circulating mechanisms 2 drive the clamping end of the clamping conveying mechanism 3 to rotate so as to drive the rotary movement of the three-dimensional metal workpiece in the cleaning tank 1.

[0040] The clamping conveying mechanism 3 comprises a lower driven wheel 31 arranged at the feeding end of the cleaning tank 1, and an upper driving wheel 32 arranged at the discharging end of the cleaning tank 1, the upper driving wheel 32 and the lower driven wheel 31 are connected through a driving chain 33, the driving chain 33 is provided with a plurality of multi-directional rotating clamping assemblies 4 which are uniformly distributed on both sides of the driving chain 33, two multi-directional rotating clamping assemblies 4 which are matched in position and constitute a group are connected through a tensioned elastic cord 5, and the side surface of a single multi-directional rotating clamping assembly 4 and the driving chain 33 are connected through a rotating stretching assembly 6.

[0041] Each group of multi-directional rotating clamping assemblies 4 limits the spacing between each group of multi-directional rotating clamping assemblies 4 through the tensioned elastic cord 5 to clamp three-dimensional metal workpieces of different lengths, and the rotating stretching assembly 6 drives the multi-directional rotating clamping assembly 4 to be close to the driving chain 33 to realize the immersion cleaning of the three-dimensional metal workpiece.

[0042] The lower driven wheel 31 of the embodiment is below the liquid level of the cleaning tank 1, and the upper driving wheel 32 is above the liquid level of the cleaning tank 1, so that when the upper driving wheel 32 is connected to the driving device, the outflow of the cleaning liquid can be effectively avoided, and the three-dimensional metal workpiece is driven to move on the driving chain 33, so that the transfer and cleaning of the material can be realized.

[0043] The liquid circulating mechanisms 2 drive the clamping end of the multi-directional rotating clamping assembly 4 to rotate, so that the three-dimensional metal workpiece is subjected to force and moves in a rotating manner in the cleaning tank 1 for cleaning, the rotating cleaning of the embodiment has the advantages of higher cleaning strength and better cleaning effect compared with the existing immersion cleaning, and the flowability of the water flow is increased to clean the impurities on the metal workpiece, so that the three-dimensional metal workpiece is fully cleaned.

[0044] The multi-directional rotating clamping assembly 4 comprises a clamping plate 41 and a rotating waterwheel 42 arranged at the clamping end of the clamping plate 41, the lower end of the clamping plate 41 is provided with a movable hinge 43, and the movable hinge 43 is movably mounted on the surface end of the driving chain 33 through the rotating stretching assembly 6.

[0045] The two clamping plates 41 of each group of multi-directional rotating clamping assemblies 4 change the spacing between the clamping plates 41 by rotating around the movable hinge 43, so that the three-dimensional metal workpiece of different lengths is clamped between the two clamping plates 41.

[0046] Each clamping plate 41 changes the vertical distance between the clamping end of the clamping plate 41 and the surface of the driving chain 33 by rotating the tensile assembly 6, so that the three-dimensional metal workpiece is immersed in or exposed from the liquid of the cleaning pool 1, and the rotating waterwheel 42 is driven to rotate by the liquid circulating mechanism 2 to make the three-dimensional metal workpiece move in a rotating manner in the liquid of the cleaning pool 1 for cleaning.

[0047] When the three-dimensional metal workpiece is clamped at the feeding end of the cleaning pool 1, the clamping plate 41 is pulled towards the two sides of the cleaning pool 1, the tension spring 5 is stretched, and the two ends of the three-dimensional metal workpiece are pressed inward under the action of the elastic force, so that the three-dimensional metal workpiece is fixed.

[0048] After the three-dimensional metal workpiece is fixed, with the movement of the driving chain 33, each clamping plate 41 changes the vertical distance between the clamping end of the clamping plate 41 and the surface of the driving chain 33 by rotating the tensile assembly 6, that is, the clamping plate 41 is pulled close to the surface of the driving chain 33 by the tensile assembly 6, so that the three-dimensional metal workpiece is immersed in the liquid of the cleaning pool 1.

[0049] The rotating waterwheel 42 is always partially above the liquid level of the cleaning pool 1 from the upper driving wheel 32 to the lower driven wheel 31. In this embodiment, a micro rotating waterwheel 42 is used, and the potential energy of the liquid is converted into kinetic energy of the rotating waterwheel 42 by the liquid circulating mechanism 2, so as to drive the three-dimensional metal workpiece to rotate as a whole, thereby achieving the rotating displacement cleaning of the three-dimensional metal workpiece.

[0050] It is further supplemented that the liquid level of the cleaning pool 1 is below the clamping end of the clamping plate 41 at the position of the lower driven wheel 31, so that when the three-dimensional metal workpiece is installed on the clamping plate 41 at the position of the lower driven wheel 31, it does not need to be installed in the liquid, and the three-dimensional metal workpiece can be directly installed on the clamping end of the clamping plate 41 exposed above the liquid. The upper driving wheel 32 is above the liquid level of the cleaning pool 1, so it is also convenient to detach the metal workpiece fixed on the clamping plate 41 in the inclined state.

[0051] The specific installation and driving principle of the rotating waterwheel 42 is that the clamping end of each clamping plate 41 is provided with a circular hole 7, the circular hole 7 is provided with a transverse straight rod 8, the inner end of the transverse straight rod 8 is provided with a pressing pad 9, the three-dimensional metal workpiece is fixed between the pressing pads 9 of each group of clamping plates 41, and the rotating waterwheel 42 is fixedly installed at the outer end of the transverse straight rod 8.

[0052] As shown in Figure 2 The movable hinge 43 includes a cavity tube 431 arranged at the lower end of the clamping plate 41, and a first solid cylinder 432 inserted in the cavity tube 431, and the first solid cylinder 432 is provided with an insertion hole slot 433 at the end portion facing the tensile assembly 6.

[0053] The implementation principle is specifically as follows: the clamping plates 41 rotate in and out around the first solid cylinder 432 through the cavity tube 431, so that the distance between the two clamping plates 41 is changed to clamp the three-dimensional metal workpieces of different lengths, the liquid circulating mechanism 2 pushes the rotating waterwheel 42 to rotate to make the transverse straight rod 8 and the extrusion pad plate 9 rotate synchronously, thereby driving the three-dimensional metal workpieces to rotate, and the three-dimensional metal workpieces are driven by the driving chain 33 to move and clean in the liquid of the cleaning pool 1 in a rotating manner.

[0054] The rotating stretching assembly 6 includes a fixed column 61 arranged on the driving chain 33, one end of the first solid cylinder 432 is sleeved outside the fixed column 61 through the insertion hole slot 433 and rotates around the fixed column 61, the upper surface of the driving chain 33 is provided with a U-shaped support 62 corresponding to the position of the other end of the first solid cylinder 432, the U-shaped support 62 limits the stable rotation of the clamping plate 41 around the first solid cylinder 432 through the cavity tube 431, and the side edge of the fixed column 61 is provided with a stretching spring 63 connected with the clamping plate 41, and the clamping plate 41 rotates around the fixed column 61 to be close to the driving chain 33 under the action of the stretching spring 63.

[0055] The purpose of arranging the rotating stretching assembly 6 in the embodiment is as follows: ① driving the three-dimensional metal workpieces to be inclined to be close to the surface of the driving chain 33, since the three-dimensional metal workpieces in the embodiment are inclined to be conveyed during movement, the rotating stretching assembly 6 can ensure that the three-dimensional metal workpieces are immersed in the cleaning pool 1 as much as possible to perform more stable and comprehensive cleaning work; ② reducing the water flow resistance on the side surface of the clamping plate 41, thereby ensuring the clamping stability of the clamping plate 41 on the three-dimensional metal workpieces and reducing the risk of accidental falling of the three-dimensional metal workpieces.

[0056] The stretching spring 63 on the upper layer of the driving chain 33 pulls the first solid cylinder 432 at the lower end of the clamping plate 41 to rotate around the fixed column 61 until it is close to the driving chain 33, and the clamping plate 41 on the upper layer of the driving chain 33 is distributed in a suspended manner at the bottom of the cleaning pool 1 under the action of the self-weight and the water flow resistance, that is, at this time, the clamping plate 41 is almost perpendicular to the driving chain 33, therefore, at this time, the U-shaped support 62 limits the stable rotation of the clamping plate 41 around the first solid cylinder 432 through the cavity tube 431, avoiding the clamping plate 41 from swinging in other directions.

[0057] Therefore, in order to realize the normal installation operation of the three-dimensional metal workpieces at the feeding end of the cleaning pool 1, the distance between the lower driven wheel 31 and the upper driving wheel 32 and the corresponding two ends of the cleaning pool 1 is the length of the clamping plate 41, and the distance between the lower driven wheel 31 and the bottom of the cleaning pool 1 is the length of the clamping plate 41.

[0058] When the driving chain 33 drives the three-dimensional metal workpiece to move, the driving chain 33 will gradually emerge from the water surface, so effective cleaning is needed during the process of the driving chain 33 being immersed in the liquid and emerging from the water surface.

[0059] As shown in Figure 1 and Figure 3 , the liquid circulating mechanism 2 is divided into a water body immersion rotating cleaning operation section and a liquid exposure cleaning section, so the liquid circulating mechanism 2 comprises a three-dimensional frame plate 21 arranged on both sides of the cleaning pool 1, and a plurality of drain ports 22 arranged at the bottom of the cleaning pool 1, each drain port 22 is connected with a circulating pipeline 23, the circulating pipeline 23 is provided with a pressure water pump 24, the output end of the pressure water pump 24 is provided with a tree-shaped branch pipeline 25 fixed in the three-dimensional frame plate 21, the tree-shaped branch pipeline 25 is evenly arranged between the lower driven wheel 31 and the upper driving wheel 32, and the opening end of the tree-shaped branch pipeline 25 is provided with a water outlet slit 26 along the moving direction of the three-dimensional metal workpiece.

[0060] The water outlet slit 26 of the liquid circulating mechanism 2 in the water body immersion rotating cleaning operation section corresponds to the installation position of the rotating waterwheel 42, so the liquid flowing out of the water outlet slit 26 drives the rotating waterwheel 42 to rotate, so that the three-dimensional metal workpiece moves in a rotating manner in the liquid in the cleaning pool 1.

[0061] The liquid circulating mechanism 2 in the liquid exposure cleaning section, that is, the water outlet slit 26 of the tree-shaped branch pipeline 25 close to the upper driving wheel 32 is close to the central position of the driving chain 33, and the tree-shaped branch pipeline 25 close to the upper driving wheel 32 is distributed above the driving chain 33 and parallel to the driving chain 33, so that the three-dimensional metal workpiece is cleaned in a flowing water manner at this time.

[0062] The present embodiment changes the existing soaking cleaning to rotating moving cleaning, so that the cleaning of the metal workpiece and the transfer of the metal workpiece are realized, the subsequent plating solution is avoided from being polluted, and the purity of each plating solution is effectively ensured.

[0063] In addition, as shown in Figure 4 , the present application also provides an electroplating process for the electroplating device for the three-dimensional metal workpiece, which comprises the following steps:

[0064] Step 100, immerse the decontaminated and activated three-dimensional metal workpiece into the metal solution by using the gantry moving frame to perform power plating.

[0065] Step 200, detach the three-dimensional metal workpiece after plating from the gantry moving frame, and transfer the three-dimensional metal workpiece after plating to the cleaning pool, fix and clamp the two ends of the three-dimensional metal workpiece by the clamping plate installed on the driving chain, and drive the three-dimensional metal workpiece to move in the cleaning pool.

[0066] Step 300, the clamping plate is tilted to be immersed in the cleaning tank under the action of tension, and the rotating waterwheel at the clamping end of the clamping plate is acted on by the circulating water flow of the liquid circulation mode of the cleaning tank to drive the clamping end and the three-dimensional metal workpiece to rotate, and the linear driving of the driving chain is matched to realize the rotational displacement cleaning of the three-dimensional metal workpiece.

[0067] When the clamping plate is transmitted on the upper layer of the driving chain, the rotating stretching assembly drives the clamping plate to be tilted close to the driving chain, so that the three-dimensional metal workpiece is immersed in the cleaning tank, and the rotational displacement cleaning of the three-dimensional metal workpiece is realized. When the clamping plate is transmitted on the lower layer of the driving chain, the clamping plate is reversely rotated to be perpendicular to the driving chain under the action of gravity, and when the clamping plate is rotated with the driving chain to the feeding end of the three-dimensional metal workpiece, the clamping plate is rotated to be perpendicular to the driving chain under the action of water pressure, so that the three-dimensional metal workpiece is conveniently installed on the clamping end of the clamping plate.

[0068] The present embodiment changes the existing immersion cleaning to rotational displacement cleaning, which can realize the cleaning and transfer of the metal workpiece, avoids the pollution of the subsequent plating solution, and facilitates the installation and removal of the cleaned metal workpiece.

[0069] The above examples are only exemplary embodiments of the present application and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also regarded as falling within the protection scope of the present application.

Claims

1. An electroplating apparatus for three-dimensional metal workpieces, characterized in that, The system includes a cleaning tank (1) located downstream of the metal plating bath and a liquid circulation mechanism (2) located on both sides of the cleaning tank (1). The cleaning tank (1) is equipped with a clamping and conveying mechanism (3) for moving the three-dimensional metal workpiece while it is immersed. The clamping and conveying mechanism (3) is used to move the three-dimensional metal workpiece linearly inside the cleaning tank (1), and the liquid circulation mechanism (2) drives the clamping end of the clamping and conveying mechanism (3) to rotate so that the three-dimensional metal workpiece moves in a rotating manner inside the cleaning tank (1). The clamping and conveying mechanism (3) includes a lower passive wheel (31) disposed at the feed end of the cleaning tank (1) and an upper active wheel (32) disposed at the discharge end of the cleaning tank (1). The upper active wheel (32) and the lower passive wheel (31) are connected by a drive chain (33). Multiple evenly distributed multi-directional rotating clamping components (4) are installed on both sides of the drive chain (33). Two multi-directional rotating clamping components (4) that are matched in position and form a group are connected by a tensioning elastic rope (5). The side of a single multi-directional rotating clamping component (4) is connected to the drive chain (33) by a rotating tensioning component (6). Each set of multi-directional rotating clamping assemblies (4) uses the tension elastic rope (5) to fix the two ends of the three-dimensional metal workpiece, and the rotating tensioning assembly (6) drives the multi-directional rotating clamping assembly (4) to approach the drive chain (33) to immerse the three-dimensional metal workpiece into the cleaning tank (1), and the liquid circulation mechanism (2) drives the clamping end of the multi-directional rotating clamping assembly (4) to rotate, so that the three-dimensional metal workpiece is subjected to force in the cleaning tank (1) for rotating displacement cleaning; The multi-directional rotating clamping assembly (4) includes a clamping plate (41) and a rotating waterwheel (42) disposed at the clamping end of the clamping plate (41). The lower end of the clamping plate (41) is provided with a movable hinge (43), and the movable hinge (43) is movably mounted on the surface end of the drive chain (33) through the rotating tension assembly (6). The tensioning elastic rope (5) is connected between each set of clamping plates (41). Each clamping plate (41) changes the vertical distance between the clamping end of the clamping plate (41) and the surface of the drive chain (33) through the rotation stretching assembly (6), so that the three-dimensional metal workpiece is immersed in or exposed in the liquid of the cleaning pool (1), and the liquid circulation mechanism (2) drives the rotating water wheel (42) to rotate so that the three-dimensional metal workpiece is rotated and cleaned in the liquid of the cleaning pool (1).

2. The electroplating apparatus for three-dimensional metal workpieces according to claim 1, characterized in that: Each clamping plate (41) has a circular through hole (7) at its clamping end. A horizontal straight rod (8) is provided inside the circular through hole (7). A squeezing pad (9) is provided at the inner end of the horizontal straight rod (8). The three-dimensional metal workpiece is fixed between the squeezing pads (9) of each set of clamping plates (41). The rotating waterwheel (42) is fixedly installed at the outer end of the horizontal straight rod (8). The liquid discharged by the liquid circulation mechanism (2) drives the rotating waterwheel (42) to rotate, so that the squeezing pad (9) drives the three-dimensional metal workpiece to rotate. The three-dimensional metal workpiece is rotated and cleaned in the liquid of the cleaning pool (1) under the drive of the drive chain (33).

3. The electroplating apparatus for three-dimensional metal workpieces according to claim 1, characterized in that: The movable hinge (43) includes a hollow tube (431) disposed at the lower end of the clamping plate (41) and a first solid cylinder (432) inserted into the hollow tube (431). The end of the first solid cylinder (432) facing the rotating tensioning assembly (6) is provided with an insertion slot (433). The clamping plate (41) rotates inward and outward around the first solid cylinder (432) through the hollow tube (431), thereby changing the distance between the two clamping plates (41) to clamp the three-dimensional metal workpieces of different lengths.

4. The electroplating apparatus for three-dimensional metal workpieces according to claim 3, characterized in that: The rotating tensioning assembly (6) includes a fixed post (61) disposed on the drive chain (33). One end of the first solid cylinder (432) is sleeved on the outside of the fixed post (61) through the insertion slot (433) and rotates around the fixed post (61). A U-shaped bracket (62) is provided on the upper surface of the drive chain (33) corresponding to the other end of the first solid cylinder (432). The U-shaped bracket (62) restricts the clamping plate (41) from rotating stably around the first solid cylinder (432) through the cavity tube (431). A tension spring (63) is provided on the side of the fixed post (61) and connected to the clamping plate (41). Under the action of the tension spring (63), the clamping plate (41) rotates around the fixed post (61) to be close to the drive chain (33).

5. The electroplating apparatus for three-dimensional metal workpieces according to claim 1, characterized in that: The lower passive wheel (31) is below the liquid level of the cleaning tank (1), and the upper active wheel (32) is above the liquid level of the cleaning tank (1). The distance between the lower passive wheel (31) and the upper active wheel (32) and the corresponding ends of the cleaning tank (1) is the length of the clamping plate (41). The distance between the lower passive wheel (31) and the bottom of the cleaning tank (1) is the length of the clamping plate (41). The liquid level of the cleaning tank (1) is below the clamping end of the clamping plate (41) at the position of the lower passive wheel (31).

6. The electroplating apparatus for three-dimensional metal workpieces according to claim 1, characterized in that: The liquid circulation mechanism (2) includes a three-dimensional frame plate (21) disposed on both sides of the cleaning tank (1) and a plurality of drain outlets (22) disposed at the bottom of the cleaning tank (1). Each drain outlet (22) is connected to a circulation pipe (23). A pressure water pump (24) is provided on the circulation pipe (23). The output end of the pressure water pump (24) is provided with a tree-shaped branch pipe (25) fixed inside the three-dimensional frame plate (21). The opening end of the tree-shaped branch pipe (25) is provided with a flat outlet (26) along the moving direction of the three-dimensional metal workpiece.

7. The electroplating apparatus for three-dimensional metal workpieces according to claim 6, characterized in that: The rotating waterwheel (42) is always partially above the liquid level of the cleaning tank (1) from the upper driving wheel (32) to the lower driven wheel (31); The tree-shaped branch pipes (25) are evenly spaced between the lower driven wheel (31) and the upper driving wheel (32). The tree-shaped branch pipes (25) are distributed above the drive chain (33) and are parallel to the drive chain (33). The water outlet flat opening (26) of the tree-shaped branch pipes (25) is close to the center of the drive chain (33).

8. An electroplating process based on the electroplating apparatus for three-dimensional metal workpieces according to any one of claims 1-7, characterized in that, Includes the following steps: Step 100: Using a gantry moving frame, immerse the cleaned and activated three-dimensional metal workpiece into the metal solution for electroplating. Step 200: Remove the plated three-dimensional metal workpiece from the gantry moving frame and transfer the plated three-dimensional metal workpiece to the cleaning tank. Fix the two ends of the three-dimensional metal workpiece with the clamping plate installed on the drive chain and drive the three-dimensional metal workpiece to move in the cleaning tank. Step 300: The clamping plate is tilted under tension and immersed in the cleaning tank. The liquid circulation of the cleaning tank applies force to the rotating water wheel at the clamping end of the clamping plate to drive the clamping end and the three-dimensional metal workpiece to rotate. The linear drive of the drive chain realizes the rotational displacement and cleaning of the three-dimensional metal workpiece.

9. The electroplating process of an electroplating apparatus for three-dimensional metal workpieces according to claim 8, characterized in that, When the clamping plate is transported on the upper layer of the drive chain, the rotation and stretching assembly drives the clamping plate to tilt close to the drive chain, so that the three-dimensional metal workpiece is immersed in the cleaning tank. When the clamping plate is transported on the lower layer of the drive chain, the clamping plate rotates in the opposite direction under its own weight to a state perpendicular to the drive chain. When the clamping plate rotates with the drive chain to the feeding end of the three-dimensional metal workpiece, the clamping plate rotates under water pressure to a state perpendicular to the drive chain.

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