CN216972729U

CN216972729U - Anode device for nickel plating of aluminum strip

Info

Publication number: CN216972729U
Application number: CN202123326201.5U
Authority: CN
Inventors: 何海波
Original assignee: Zhongshan San Mei Gao New Material Technology Co ltd
Current assignee: Zhongshan San Mei Gao New Material Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-07-15
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses an anode device for nickel plating of an aluminum strip, which comprises a shell, a plurality of anode clamps and a parallel switch, wherein the anode clamps are arranged on the shell; the shell is internally divided by a partition board to form a plurality of electrolysis chambers, a plurality of anode clamps are correspondingly arranged in the electrolysis chambers one by one and are connected with branch connectors of the parallel switch through leads, and a main connector of the parallel switch is connected with a power supply; and a plated metal block is placed in each electrolytic chamber and fixed by the anode clamp, and the number of the plated metal blocks which are connected with a power supply is controlled by the parallel switch. The utility model adjusts the metal ion point decomposition speed of the anode by controlling the number of the plated metal blocks connected into the circuit, thereby controlling the metal ion concentration in the electrolyte. So as to keep the concentration of metal ions in the electrolyte constant, and further realize the effect of the same thickness of each section of plating layer of the aluminum strip only by regulating the same electroplating time of each section of the aluminum strip.

Description

Anode device for nickel plating of aluminum strip

Technical Field

The utility model belongs to the technical field of electroplating, and particularly relates to an anode device for nickel plating of an aluminum strip.

Background

The electroplating is a process of electroplating the workpiece to be electroplated in an electroplating bath filled with electroplating solution, wherein the workpiece to be electroplated is cleaned and specially pretreated as a cathode, a plated metal material is used as an anode, and the cathode and the anode are respectively connected with a cathode and an anode of a direct current power supply. The plating solution is composed of an aqueous solution containing a compound of a plating metal, conductive salts, a buffer, a pH adjuster, an additive, and the like. In the electroplating process, metal ions in the electroplating solution move to the surface of an electroplated part serving as a cathode under the action of potential difference to form a plating layer. The plating metal of the anode electrolyzes metal ions into the plating solution to maintain the concentration of the metal ions being plated. By adopting the electroplating method, the nickel-plated layer is produced on the surface of the aluminum strip, so that the hardness of the aluminum strip can be improved, and the corrosion resistance and the heat insulation and heat resistance of the aluminum strip can be improved. The aluminum strip can be applied to wider mechanical fields.

The step-by-step electroplating is required when the aluminum strip is electroplated, and because the plating metal of the anode is gradually consumed in the electroplating process, the electroplating efficiency is gradually reduced along with the consumption of the plating metal. This causes the problem of uneven thickness of different sections on the same strip. The change in the concentration of metal ions in the plating solution is affected by the rate of electrolysis of the plating metal at the anode, and the change in the concentration of metal ions in the plating solution affects the plating thickness and plating efficiency of the cathode workpiece.

Therefore, the anode device for nickel plating of the aluminum strip is continued, the speed of metal ions released by electrolysis of plated metal of the anode can be regulated, and the aims of controlling the concentration of the metal ions in the electrolyte and further regulating and controlling the thickness of a plating layer on the surface of an element to be plated are fulfilled.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anode device for nickel plating of an aluminum strip, which solves the problem of uneven thickness of different sections on the same aluminum strip.

The utility model is realized by the following technical scheme:

an anode device for nickel plating of an aluminum strip comprises a shell, a plurality of anode clamps and a parallel switch; the shell is internally divided by a partition board to form a plurality of electrolysis chambers, a plurality of anode clamps are correspondingly arranged in the electrolysis chambers one by one and are connected with branch connectors of the parallel switch through leads, and a main connector of the parallel switch is connected with a power supply; and a plated metal block is placed in each electrolytic chamber and fixed by the anode clamp, and the number of the plated metal blocks which are connected with a power supply is controlled by the parallel switch.

Through the scheme, the utility model at least obtains the following technical effects:

the anode device comprises a plurality of electrolysis chambers formed by a shell and partition plates, wherein each electrolysis chamber is internally provided with a plated metal block clamped by an anode clamp, each anode clamp is connected with a branch of a parallel switch through a lead, a main circuit of the parallel switch is connected with a power supply, the number of the plated metal blocks connected with the power supply is adjusted by controlling the parallel switch, the more the plated metal blocks connected with the power supply are, the higher the efficiency of generating metal ions by the anode is, the higher the replenishing speed of the metal ions in the electrolyte is, the attenuation condition of the electroplating efficiency caused by the consumption of the plated metal is compensated, and the concentration of the metal ions in the electrolyte is ensured so that the surface of a part to be electroplated at the cathode can be adhered with a plating layer with uniform thickness.

Preferably, a filling opening is formed in the top of the shell, and the filling opening is simultaneously communicated with the plurality of electrolysis chambers so as to convey the plated metal blocks to any one of the electrolysis chambers through the filling opening.

Preferably, the anode clamp comprises two telescopic assemblies, two clamping pieces and a conductive joint; two the flexible subassembly symmetry set up in the electrolysis cavity, two the clamping piece is installed in two the flexible end of flexible subassembly is used for the centre gripping plating metal block, conductive joint set up in the surface of clamping piece contact plating metal block, conductive joint pass through the wire with parallel switch's branch circuit articulate.

Preferably, the telescopic assembly comprises a limiting telescopic rod and a spring; the limiting telescopic rod comprises a fixed rod and a telescopic rod, the fixed rod is installed on the inner wall of the electrolysis cavity, one end of the telescopic rod is connected with the fixed rod in a telescopic mode, the other end of the telescopic rod is fixedly connected with the clamping piece, the telescopic rod is sleeved with the spring, and two ends of the spring are respectively abutted to the end portion of the fixed rod and the clamping piece.

Preferably, the top end of the clamping piece is provided with a guide part, and the distance between the two guide parts is greater than the distance between the two clamping pieces where the two guide parts are located, so that the guide part is used for guiding the plated metal block.

Preferably, a plurality of circulation ports are symmetrically formed in two opposite side walls of the shell, and the circulation ports which are symmetrical in a plurality of groups are communicated with the electrolysis chambers in a one-to-one correspondence mode.

Preferably, the plurality of flow openings are equal in shape and area.

Preferably, the housing is made of an insulating material.

Preferably, the separator is made of an insulating material.

Preferably, the device further comprises a control terminal, and the control terminal is in communication connection with the parallel switch to control the on-off of each branch of the parallel switch.

The utility model has the beneficial effects that:

the utility model adjusts the metal ion point decomposition speed of the anode by controlling the number of the plated metal blocks connected into the circuit, thereby controlling the metal ion concentration in the electrolyte. So as to keep the concentration of metal ions in the electrolyte constant, and further realize the effect of the same thickness of each section of plating layer of the aluminum strip only by regulating the same electroplating time of each section of the aluminum strip.

Drawings

Fig. 1 is a schematic axial view of an anode assembly for nickel plating of an aluminum strip according to an embodiment of the present invention.

Fig. 2 is a side cross-sectional view of an anode assembly for nickel plating of an aluminum strip in accordance with an embodiment of the present invention.

Legend:

1, a shell; 2, anode clamping; 3, connecting switches in parallel; 4 plating a metal block;

11 a partition plate; 12 an electrolysis chamber; 13 a filling opening; 14 flow ports;

21 a clip piece; 22 a conductive contact; 23, limiting the telescopic rod; 24 springs;

211 a guide part;

231 fixing the rod; 232, a telescopic rod;

Detailed Description

The utility model is further illustrated by the following figures and examples.

As shown in fig. 1 and 2, the present embodiment provides an anode device for nickel plating of an aluminum strip, which comprises a housing 1, a plurality of anode clamps 2 and a parallel switch 3. A plurality of electrolysis chambers 12 are formed in the shell 1 through partition plates 11 in a separated mode, an anode clamp 2 is installed in each electrolysis chamber 12, the anode clamp 2 is connected to a branch connector of the parallel switch 3 through a lead, and a main circuit connector of the parallel switch 3 is connected with the positive pole of a power supply through a lead. Each electrolytic chamber 12 is filled with a plated metal block 4, and the plated metal block 4 is held by an anode holder 2. When the concentration of metal ions in the electrolyte is reduced, the number of the plated metal blocks 4 connected into the circuit is increased by controlling the parallel switch 3 to connect more branches, the speed of releasing the metal ions by the anode is increased to supplement the consumption of the metal ions in the electrolyte, the speed of generating a plating layer on the surface of the piece to be electrolyzed at the cathode is constant, and the thicknesses of the plating layers generated in the same time are equal, so that the effect of ensuring the equal thickness of the plating layer of each section of the aluminum strip is realized when the aluminum strip is electroplated in batches for multiple times.

In one embodiment, to facilitate replenishment of the spent plated metal slug 4, a fill port 13 is provided in the top of the housing 1, each electrolysis chamber 12 is in communication with the fill port 13, and the plated metal slug 4 is inserted into the electrolysis chamber 12 from top to bottom along the fill port 13. The filling speed is improved, even a certain electrolytic chamber 12 can be filled independently under the state that other electrolytic chambers 12 release metal ions, the effect of filling without shutdown is realized, the electroplating efficiency is improved, and meanwhile, the influence on the coating uniformity generated on the surface of a cathode to-be-electroplated part when the anode material is filled by shutdown can also be reduced.

In one embodiment, the anode clamp 2 includes two telescoping assemblies, two clamping pieces 21 and a conductive joint 22. The two telescopic components are symmetrically arranged in the electrolysis chamber 12, and the two clamping pieces 21 are respectively arranged at the telescopic ends of the two telescopic components to form a symmetrical clamping structure. After the plated metal block 4 enters the electrolytic chamber 12 from the filling opening 13, the two telescopic assemblies extend, and the plated metal block 4 is clamped and fixed by the two clamping pieces 21. The contact surfaces of the two clamping pieces 21 and the plated metal block 4 are provided with conductive joints 22, the conductive joints 22 are connected with branch joints of the parallel switch 3 through wires, so that the conductive joints 22 are connected into a circuit of a power supply anode, and the conductive joints 22 are attached to the plated metal block 4 to realize the electrifying effect. When the parallel switch 3 is controlled to connect the conductive contact 22 to the positive electrode of the power supply, the plated metal block 4 is energized to start electrolysis to generate metal ions. After the parallel switch 3 is closed, the plated metal block 4 is powered off to stop generating metal ions.

In one embodiment, the telescoping assembly includes a position limiting telescoping rod 23223 and a spring 24. The limiting telescopic rod 23223 is formed by sleeving a fixed rod 231 and a telescopic rod 232, and one end of the telescopic rod 232 can slidably penetrate into the fixed rod 231 to achieve a telescopic effect. Not only is the telescopic limiting rod guaranteed to have an axial telescopic effect, but also the limiting telescopic rod 23223 has a supporting effect on the clamping piece 21 in a non-telescopic direction. The spring 24 is sleeved on the telescopic rod 232, and two ends of the spring 24 respectively abut against the end of the fixing rod 231 and the clamping piece 21. When the plated metal block 4 is clamped between the two clamping pieces 21, the telescopic limiting rod is in a shortened state, the spring 24 is compressed and provides elastic supporting force for the clamping pieces 21, so that the two clamping pieces 21 clamp and fix the plated metal. The effect of adjusting the distance between the two clamping pieces 21 to adapt to the size change of the plated metal block 4 is realized, and the problem that the plated metal block 4 falls off due to the overturning of the clamping pieces 21 is avoided.

In one embodiment, the top ends of the clamping pieces 21 are bent outwards to form the guiding portions 211, and the guiding portions 211 of two symmetrical clamping pieces 21 are also symmetrical to each other, so that the distance between the two guiding portions 211 is greater than the distance between the two clamping pieces 21. The two guide portions 211 are flared outward to both sides, thereby facilitating the guiding of the plated metal block 4. When the plated metal block 4 is inserted into the electrolytic chamber 12 from the filling port 13, the plated metal block 4 can be inclined, one corner of the plated metal block enters between the two guide parts 211, then the plated metal block 4 is gradually pressed downwards and the plated metal block 4 is straightened, and then in the process of pressing the plated metal block 4, the plated metal block 4 pushes the guide parts 211 to push the two clamping pieces 21 to the two sides, so that the two clamping pieces 21 do not need to be additionally controlled to open, the filling step and the mechanical structure of the plated metal block 4 are simplified, the operation efficiency is improved, and the occurrence probability of mechanical faults is reduced.

In an embodiment, a plurality of flow openings 14 are symmetrically formed on two opposite sidewalls of the housing 1, each two symmetrical flow openings 14 form a group, and each group of two symmetrical flow openings 14 is communicated with one electrolysis chamber 12, so as to facilitate the circulation of the electrolyte, and make the diffusion speed of the metal ions generated by the anodic electrolysis in the electrolyte faster and more uniform.

In one embodiment, each of the flow openings 14 is equal in shape and area. The flow rate of the electrolyte flowing through each electrolysis chamber 12 is the same, and the diffusion speed of the metal ions generated by the anode electrolysis is the same, so that the speed and the diffusion speed of the metal ions generated by the anode electrolysis can be conveniently controlled, and errors caused by the difference of the diffusion speeds of the metal ions can be avoided.

In one embodiment, the housing 1 and the partition 11 are made of insulating materials. The situation that the plated metal blocks 4 which are not powered on are accidentally electrolyzed to release metal ions because the plated metal blocks 4 are mutually contacted and powered on is avoided.

In one embodiment, the aluminum strip nickel-plated anode assembly is further provided with a control terminal. The parallel switch 3 is connected to a control terminal in communication, and the control terminal operates the parallel switch 3. The control terminal can be connected with other equipment for integrated control, and the working efficiency is improved.

Various technical features in the above embodiments may be arbitrarily combined as long as there is no conflict or contradiction in combination between the features, but are limited to space and are not described one by one.

The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. An anode device for nickel plating of an aluminum strip is characterized in that: comprises a shell, a plurality of anode clamps and a parallel switch; the shell is internally divided by a partition board to form a plurality of electrolysis chambers, a plurality of anode clamps are correspondingly arranged in the electrolysis chambers one by one and are connected with branch connectors of the parallel switch through leads, and a main connector of the parallel switch is connected with a power supply; and a plated metal block is placed in each electrolytic chamber and fixed by the anode clamp, and the number of the plated metal blocks which are connected with a power supply is controlled by the parallel switch.

2. An anode assembly for use in nickel plating of aluminum strip as claimed in claim 1 wherein said housing has a fill opening in the top thereof, said fill opening communicating simultaneously with a plurality of said electrolysis chambers for delivering a plated metal slug to any one of said electrolysis chambers through said fill opening.

3. The anode assembly for use in nickel plating of aluminum strip of claim 2, wherein said anode clamp comprises two telescoping assemblies, two clamping tabs, and a conductive joint; the two telescopic assemblies are symmetrically arranged in the electrolytic chamber, the two clamping pieces are arranged at the telescopic ends of the two telescopic assemblies and used for clamping the plated metal block, the conductive joint is arranged on the surface of the clamping piece contacting the plated metal block, and the conductive joint is connected with the branch joint of the parallel switch through a lead.

4. The anode assembly for use in nickel plating of aluminum strip of claim 3, wherein said telescoping assembly comprises a position limiting telescoping rod and a spring; the limiting telescopic rod comprises a fixed rod and a telescopic rod, the fixed rod is installed on the inner wall of the electrolysis cavity, one end of the telescopic rod is in telescopic connection with the fixed rod, the other end of the telescopic rod is in fixed connection with the clamping piece, the spring sleeve is arranged on the telescopic rod, and two ends of the spring respectively abut against the end portion of the fixed rod and the clamping piece.

5. An anode assembly for use in nickel plating of aluminum strip as claimed in claim 3 wherein said clips are provided with guides at their top ends, said guides being spaced further apart than the clips for guiding the plated metal block.

6. The anode device for nickel plating of aluminum strips as claimed in claim 1, wherein a plurality of flow ports are symmetrically formed on two opposite side walls of the housing, and a plurality of sets of the symmetrical flow ports are communicated with a plurality of the electrolysis chambers in a one-to-one correspondence manner.

7. An anode assembly for use in nickel plating of aluminum strip as claimed in claim 6 wherein the plurality of flow openings are of equal shape and area.

8. The anode assembly for use in nickel plating on aluminum strip of claim 1, wherein said housing is made of an insulating material.

9. The anode assembly for use in nickel plating on aluminum strip of claim 1, wherein said separator is made of an insulating material.

10. The anode device for nickel plating on aluminum strips as claimed in claim 1, further comprising a control terminal, wherein the control terminal is in communication connection with the parallel switch to control the on-off of each branch of the parallel switch.