Anode bar and electroplating reaction device

Abstract

The utility model discloses an anode bar and an electroplating reaction device, and relates to the technical field of electroplating equipment. The anode bar comprises a zinc anode, a titanium rod and a fixing piece. The zinc anode extends along a first direction and is provided with a central channel penetrating through the zinc anode along the first direction; the titanium rod is embedded in the zinc anode along the central channel; and the fixing piece is connected with the titanium rod, is positioned on one side of the zinc anode along the first direction, and is used for fixing the zinc anode. By adopting the technology provided by the utility model, the stress distribution of the zinc anode can be effectively improved, so that when the zinc anode is dissolved, the phenomenon that the zinc anode is broken due to stress concentration is reduced, the service life of the zinc anode is greatly prolonged, and the cost for replacing the zinc anode is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroplating equipment technical field, concretely relates to an anode stick and electroplating reaction device. BACKGROUND

[0002] Acid zinc nickel electroplating process is a kind of electroplating technology for depositing zinc nickel alloy layer on the surface of metal, since in the electroplating process, zinc anode will constantly dissolve and release zinc ion into bath solution.If the stress generated in the internal of zinc anode during manufacturing or processing is not properly released, or the purity of zinc anode is not enough, and the internal structure is not uniform, with the long time of electroplating reaction, zinc anode is easy to appear uneven dissolution phenomenon, causing zinc anode fracture.

[0003] In addition, the fractured zinc anode will also pull or penetrate the anode film, causing the anode film to start breaking from the inside, affecting the uniformity and adhesion of the plating layer, and further reducing the overall quality of the plating layer. Based on this, in order to reduce the dissolution and fracture of zinc anode, the main measures currently adopted mainly include using protective coating or selecting appropriate electrolyte and operating conditions to reduce the corrosion phenomenon of zinc anode. However, although the use of protective coating reduces the fracture phenomenon of zinc anode, it also reduces the electroplating reaction efficiency, and the manual control cost of selecting appropriate electrolyte and operating conditions is high. SUMMARY

[0004] The utility model provides a kind of anode stick and electroplating reaction Zhuang main to solve the problem that zinc anode is easy to appear fracture in prior art.

[0005] To solve the above technical problems, the utility model adopts the technical scheme to provide an anode stick, which comprises: a zinc anode, a titanium rod and a fixing member.

[0006] The zinc anode extends along a first direction and is provided with a central passage that penetrates the zinc anode along the first direction; the titanium rod is embedded in the zinc anode along the central passage; and the fixing member is connected with the titanium rod and located on one side of the zinc anode along the first direction, wherein the fixing member is used to fix the zinc anode.

[0007] The technical scheme provided by the utility model has the beneficial effects compared with the prior art:

[0008] By setting the titanium rod embedded in the zinc anode along the central passage, the titanium rod can serve as a reinforcing rib for the zinc anode to effectively improve the structural performance of the zinc anode and improve the stress distribution of the zinc anode, thereby reducing the fracture phenomenon of the zinc anode caused by stress concentration when the zinc anode dissolves, greatly prolonging the service life of the zinc anode and reducing the cost required for replacing the zinc anode.

[0009] Wherein, since the metal titanium is inert in many chemical and electrochemical processes, such as acidic zinc-nickel plating reaction, when the titanium rod is embedded in the zinc anode and serves as one of the anode materials, it does not participate in the electrochemical reaction, that is, it does not release any substance into the plating solution, avoids introducing impurities that may cause the plating layer to be impure, and maintains the original form to maintain the strengthening effect on the zinc anode. Compared with the current method of adding a protective coating outside the zinc anode, using a titanium rod can avoid hindering the dissolution of the zinc anode.

[0010] In addition, a fixing member connected with the titanium rod is further added to facilitate the fixing of the interval distance of the zinc anode and facilitate the inspection of the corrosion and performance status of the zinc anode by the staff at any time.

[0011] In some embodiments, the fixing member further comprises an extension part and a hook part, the extension part extends along the first direction and is connected with the titanium rod and the hook part respectively, and the hook part is used for suspending the zinc anode.

[0012] By using the above technical solution, the extension part and the hook part are used to suspend the zinc anode, which can simplify the installation process of the zinc anode, and when the zinc anode is dissolved to a certain extent, the zinc anode can be quickly removed and replaced.

[0013] Further, the titanium rod, the extension part and the hook part are integrally formed. That is, the titanium rod and the fixing member are an integral whole, thereby eliminating the assembly step between the fixing member and the titanium rod and improving the connection firmness between the extension part, the hook part and the titanium rod.

[0014] In some embodiments, the outer circumferential side of the zinc anode is further covered with an anode film. Further, the anode film is a polypropylene anode film.

[0015] By using the above technical solution, since the polypropylene (PP) material has good mechanical properties, the anode film using the same can have high tensile strength and impact resistance, thereby reducing the damage phenomenon of the anode film.

[0016] In some embodiments, the titanium rod penetrates through the zinc anode along the first direction and is equal in length to the zinc anode.

[0017] By using the above technical solution, since the size of the anode film is limited, when the zinc anode is replaced, the zinc anode is easy to touch the inner wall of the anode film, thereby damaging the anode film, and therefore the zinc anode needs to maintain a certain straightness. The structure of the titanium rod embedded and extending along the first direction and penetrating through the zinc anode can effectively meet this demand.

[0018] In some embodiments, the material of the fixing member is titanium metal or titanium alloy.

[0019] In some embodiments, the anode stick is further provided with a containing space capable of flowing through the anode liquid, and the zinc anode is located in the containing space and is at least partially immersed in the anode liquid.

[0020] In some embodiments, the application further provides an electroplating reaction device, comprising the above-mentioned anode stick and an electroplating tank capable of containing an electroplating liquid, wherein the fixing member of the anode stick is connected with the top of the electroplating tank, so that the anode stick is suspended in the electroplating tank and is at least partially immersed in the electroplating liquid.

[0021] In some embodiments, the electroplating reaction device is further provided with a semi-permeable membrane, which is arranged on the outer circumferential side of the anode stick, wherein the semi-permeable membrane is capable of permeating zinc ions in the anode liquid and isolating nickel ions in the electroplating liquid.

[0022] By adding a semi-permeable membrane on the outer side of the anode stick, the anode liquid in the containing space of the anode stick is effectively isolated from the electroplating liquid in the electroplating tank, so that the replacement reaction between zinc ions in the anode liquid and nickel ions in the electroplating liquid is avoided. The nickel ions in the electroplating liquid cannot permeate into the anode liquid through the semi-permeable membrane, effectively avoiding the phenomenon of black film on the surface of the zinc anode, thereby improving the electroplating efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor, wherein:

[0024] Figure 1 is a cross-sectional view of an embodiment of a zinc anode 10 of an anode stick provided by the present application. Figure 1 ;

[0025] Figure 2 is a cross-sectional view of an embodiment of a zinc anode 10 of an anode stick provided by the present application. Figure 2 ;

[0026] Figure 3 is a perspective structural schematic diagram of an embodiment of a zinc anode 10 of an anode stick provided by the present application.

[0027] Figure 4 is a cross-sectional view of an embodiment of an anode stick provided by the present application.

[0028] Figure 5 is Figure 4 a local enlarged view of part A in the figure.

[0029] In the drawings:

[0030] 10, zinc anode; 20, titanium rod; 30, fixing member; 31, extension; 32, hook portion; 40, anode film; 50, accommodating space; 51, anolyte; 60, semi-permeable membrane. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Referring to Figures 1-2 illustrated, Figure 1 a cross-sectional view of an embodiment of a zinc anode 10 of an anode rod provided by the present application is shown. Figure 1 ; Figure 2 a cross-sectional view of an embodiment of a zinc anode 10 of an anode rod provided by the present application is shown. Figure 2 .

[0033] In some embodiments, the anode rod comprises: a zinc anode 10, a titanium rod 20 and a fixing member 30. The zinc anode 10 extends along a first direction and is provided with a central passage penetrating through the zinc anode 10 along the first direction; the titanium rod 20 is embedded in the zinc anode 10 along the central passage; and the fixing member 30 is connected with the titanium rod 20 and located at one side of the zinc anode 10 along the first direction, wherein the fixing member 30 is used for fixing the zinc anode 10.

[0034] In the embodiments of the present application, the titanium rod 20 embedded in the interior of the zinc anode 10 along the central passage enables the titanium rod 20 to serve as a reinforcing rib of the zinc anode 10 to effectively improve the structural performance of the zinc anode 10. Exemplarily, the titanium rod 20 is embedded in the zinc anode 10 when the zinc anode 10 is cast to be embedded in the zinc anode 10. The stress distribution of the zinc anode 10 is improved accordingly, so that the fracture of the zinc anode 10 caused by stress concentration is reduced when the zinc anode 10 dissolves, the service life of the zinc anode 10 is greatly prolonged, and the cost required for replacing the zinc anode 10 is reduced.

[0035] Since the metal titanium is inert in many chemical and electrochemical processes, for example, in an acidic zinc-nickel electroplating reaction, when the titanium rod 20 is embedded in the zinc anode 10 and serves as one of the anode materials, it does not participate in the electrochemical reaction and does not release any substance into the electroplating solution, thereby avoiding the introduction of impurities that may cause impure plating and maintaining the original form to maintain the reinforcing effect on the zinc anode 10.

[0036] Exemplarily, the titanium rod 20 is located in the central passage of the zinc anode 10, and the titanium rod 20 is located at the last dissolution position of the zinc anode 10. When the zinc anode 10 appears uneven corrosion phenomenon, for example, when the zinc anode 10 is split into multiple parts, the titanium rod 20 can still connect the parts of the zinc anode 10, thereby effectively avoiding the zinc anode 10 from falling and puncturing the anode film 40.

[0037] In addition, a fixing member 30 connected with the titanium rod 20 is additionally provided to facilitate the fixing of the interval spacing of the zinc anode 10 and facilitate the inspection of the corrosion and performance status of the zinc anode 10 by the staff at any time.

[0038] In some embodiments, the outer circumferential side of the zinc anode 10 is further covered with an anode film 40. Exemplarily, the anode film 40 is a polypropylene anode film. Since the polypropylene (PP) material has good mechanical properties, the use of a thinner polypropylene anode film can enhance the tensile strength and impact resistance thereof, thereby reducing the damage phenomenon of the anode film 40.

[0039] Exemplarily, in combination with the drawings of Figure 1 and Figure 2 It is shown that since the size of the anode film 40 is limited, when the zinc anode 10 is replaced, the zinc anode 10 is easy to touch the inner wall of the anode film 40, thereby damaging the anode film 40, so the zinc anode 10 needs to maintain a certain straightness. The titanium rod 20 penetrates the zinc anode 10 along the first direction and is equal in length to the zinc anode 10. Through the structure of embedding the titanium rod 20 described above, the straightness requirement of the zinc anode 10 can be effectively met.

[0040] In the present application, the length of the titanium rod 20 is not limited. When the titanium rod 20 is not equal in length to the zinc anode 10, for example, when the titanium rod 20 is shorter than the zinc anode 10, it can also effectively enhance the structural performance of the zinc anode 10.

[0041] Referring to the drawings of Figure 3 and Figure 3 shows a perspective structural schematic view of an embodiment of the zinc anode 10 of the anode rod provided by the present application.

[0042] In some embodiments, the fixing member 30 further comprises an extension 31 and a hook portion 32, the extension 31 extends along the first direction and is connected with the titanium rod 20 and the hook portion 32, respectively, wherein the hook portion 32 is used for suspending the zinc anode 10.

[0043] In the embodiments of the present application, the zinc anode 10 is hung by the extension part 31 and the hook part 32, so that the installation process of the zinc anode 10 can be simplified, and when the zinc anode 10 is dissolved to a certain extent, the zinc anode 10 can be quickly removed and replaced. Exemplarily, the titanium rod 20, the extension part 31 and the hook part 32 are integrally formed. That is, the titanium rod 20 and the fixing part 30 are an integral whole, so that the assembly step between the fixing part 30 and the titanium rod 20 is removed, and the connection firmness between the extension part 31, the hook part 32 and the titanium rod 20 is improved. The material of the fixing part 30 is titanium metal or titanium alloy.

[0044] Referring to Figures 4-5 as shown, Figure 4 a cross-sectional view of an embodiment of the anode rod provided by the present application is shown; Figure 5 for Figure 4 a local enlarged view of part A.

[0045] In some embodiments, the anode rod is further provided with a containing space 50 through which the anolyte 51 can flow, and the zinc anode 10 is located in the containing space 50 and at least partially immersed in the anolyte 51, so as to facilitate the zinc anode 10 to produce electrochemical reaction. Exemplarily, the anolyte 51 is a zinc chloride solution, and the concentration thereof is generally about 205 g / L.

[0046] In some embodiments, the present application further provides an electroplating reaction device, which comprises the above-mentioned anode rod and an electroplating tank, and the electroplating tank can contain an electroplating solution. The fixing part 30 of the anode rod is connected with the top of the electroplating tank, so that the anode rod is suspended in the electroplating tank and at least partially immersed in the electroplating solution.

[0047] In some embodiments, the electroplating reaction device is further provided with a semi-permeable membrane 60, which is combined Figures 4-5 as shown, the semi-permeable membrane 60 is arranged on the outer circumferential side of the anode rod. The semi-permeable membrane 60 can permeate zinc ions in the anolyte 51 and isolate nickel ions in the electroplating solution. By additionally arranging a layer of semi-permeable membrane 60 on the outer side of the anode rod, the anolyte 51 in the internal containing space 50 of the anode rod and the electroplating solution in the electroplating tank are effectively isolated, so as to avoid displacement reaction between the zinc ions in the anolyte 51 and the nickel ions in the electroplating solution. The nickel ions in the electroplating solution cannot permeate into the anolyte 51 through the semi-permeable membrane 60, so as to effectively avoid the phenomenon that a black film is generated on the surface of the zinc anode 10, and the electroplating efficiency is improved. Exemplarily, the semi-permeable membrane 60 is a ceramic membrane or an organic membrane.

[0048] The above-mentioned is only the implementation manner of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields shall be carried in the protection range of the present application.

Claims

1. An anode rod, characterized by The anode rod comprises: a zinc anode extending along a first direction and provided with a central passage penetrating through the zinc anode along the first direction; a titanium rod embedded in the zinc anode along the central passage; a fixing member connected with the titanium rod and located at one side of the zinc anode along the first direction, wherein the fixing member is used for fixing the zinc anode.

2. The anode rod of claim 1, wherein The fixing member further comprises an extension and a hooking part, the extension extends along the first direction and is connected with the titanium rod and the hooking part respectively, wherein the hooking part is used for suspending the zinc anode.

3. The anode rod of claim 2, wherein The titanium rod, the extension and the hooking part are integrally formed.

4. The anode rod of claim 1, wherein The zinc anode is further provided with an anode film on the outer periphery.

5. The anode rod of claim 4, wherein The anode film is a polypropylene anode film.

6. The anode rod of claim 1, wherein The titanium rod penetrates through the zinc anode along the first direction and is equal in length to the zinc anode.

7. An anode rod according to any one of claims 1 to 6, c h a r a c t e r i s e d in that The fixing member is made of titanium metal or titanium alloy.

8. An anode rod according to any one of claims 1 to 6, characterised in that The anode rod is further provided with a containing space through which an anode liquid can flow, and the zinc anode is located in the containing space and at least partially immersed in the anode liquid.

9. An electroplating reaction apparatus characterized by comprising: The anode rod comprises:

10. The electroplating reaction apparatus according to claim 9, wherein The anode rod is further provided with a containing space through which an anode liquid can flow, and the zinc anode is located in the containing space and at least partially immersed in the anode liquid. The anode rod comprises: The anode rod is further provided with a containing space through which an anode liquid can flow, and the zinc anode is located in the containing space and at least partially immersed in the anode liquid.

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