Anode box and electroplating bath anode structure

Abstract

The utility model relates to the technical field of electroplating processing, and discloses an anode box and an electroplating bath anode structure, the anode box comprises a mounting assembly and a supporting structure, the mounting assembly comprises a frame and a mounting strip, the frame is connected with a base frame of an electroplating bath, and the mounting strip is connected to the inner circumference of the frame and is suitable for supporting an anode plate of the electroplating bath. A pressing plate is mounted on the frame and is used for pressing the anode plate on the mounting strip; the supporting structure is arranged on the side, close to a to-be-plated piece, of the frame and comprises a connecting frame and a plurality of supporting strips, the connecting frame is connected with the frame, the supporting strips are all located on the inner circumference of the connecting frame and spliced to form a grid, anode cloth of the electroplating bath is located on the side, close to an anode plate, of the connecting frame, or an ionic membrane of the electroplating bath is located on the side, close to the anode plate, of the connecting frame. According to the utility model, the problem that the anode cloth or the ionic membrane deforms or is separated from the original position in the electroplating processing process to cause adverse effects on the electroplating processing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating processing, in particular to an anode box and an anode structure of an electroplating tank. Background Art

[0002] Electroplating is a process that uses electrolysis to coat the surface of parts. During electroplating, the workpiece to be plated is the cathode connected to the negative pole of the power supply, and the coating metal is the anode connected to the positive pole of the power supply. The electroplating solution is used as the medium, and the metal cations in the plating solution move toward the workpiece to be plated under the action of direct current, and obtain electrons on the surface of the workpiece to be plated and form a deposition, thereby forming a coating metal film on the surface of the workpiece to be plated. During the electroplating process, the anode will produce bubbles during operation. The contact between the bubbles and the workpiece to be plated can easily cause a plating-resistant area on the surface of the workpiece to be plated, and some anode metals may produce impurities such as anode mud during electrolysis, which affects the uniformity of the coating.

[0003] In the prior art, an ion membrane is usually provided between the anode and the workpiece to be plated to block bubbles and prevent the bubbles from contacting the workpiece to be plated, and an anode cloth is provided as a filtering structure to block the passage of anode mud.

[0004] However, since both the anode cloth and the ion membrane are flexible components, when the volume of the electroplating tank is large, the anode cloth or the ion membrane is easily deformed or dislocated due to factors such as the flow of the plating solution, which has an adverse effect on the electroplating process. Utility Model Content

[0005] In view of this, the utility model provides an anode box and an anode structure of an electroplating tank to solve the problem that the anode cloth or ion membrane is deformed or separated from the original position during the electroplating process, causing adverse effects on the electroplating process.

[0006] In the first aspect, the utility model provides an anode box, comprising: an installation assembly, including a frame and a mounting bar, the frame is installed on a base frame of an electroplating tank, the mounting bar is connected to the inner periphery of the frame and is suitable for supporting the anode plate of the electroplating tank, and a pressure plate is installed on the frame, and the pressure plate presses the anode plate against the mounting bar; a support structure, arranged on a side of the frame close to the workpiece to be plated, comprising a connecting frame and a plurality of supporting bars, the connecting frame is connected to the frame, and the plurality of supporting bars are all located on the inner periphery of the connecting frame and are spliced ​​to form a grid.

[0007] Beneficial effects: The anode plate of the electroplating tank is installed and limited by setting a frame and a mounting bar, and then the support structure is set on the side of the frame and the mounting bar away from the anode plate. The support bars are spliced ​​to form a grid, which can effectively support the anode cloth or ion membrane over a large area, preventing the middle part of the anode cloth or ion membrane from sagging and causing great pressure on the surrounding installation and fixing structures. At the same time, the grid-shaped splicing has little shielding effect on the electric lines in the electroplating solution, avoiding affecting the quality of the coating. In addition, the support structure and the mounting assembly jointly form a space for limiting the anode cloth or ion membrane, reducing the possibility of the ion membrane or anode cloth being separated from the original position.

[0008] In an optional embodiment, the anode plate includes a plurality of plate bodies, and a plurality of pressure plates are provided, with at least one pressure plate pressed on each of the plate bodies, and the pressure plate is conductive and connected to the positive electrode of the power supply.

[0009] Beneficial effect: By making the pressing plate conductive, the pressing plate can serve as a fastening structure for pressing the anode plate onto the mounting bar, and can also serve as a power connection component for connecting the anode plate to the electrode, thereby achieving connection between the anode plate and the positive electrode of the power supply, thereby reducing the number of structures, reducing costs, and simplifying the assembly steps, providing convenience for maintenance work.

[0010] In an optional embodiment, the mounting strip includes a side strip and a central strip, the side strip abuts against the inner circumferential wall of the frame and extends along the length direction of the inner circumferential wall of the frame, the central strip is arranged in the middle of the frame and its two ends are respectively connected to the two inner circumferential walls opposite to the frame, and the plurality of plate bodies are arranged on both sides of the central strip, and one side of the plate body abuts against a side of the side strip facing the anode plate, and the other side abuts against a side of the central strip facing the anode plate.

[0011] Beneficial effect: By providing the central strip and the side strips, the central strip divides the inner area of ​​the frame into two equal parts, which facilitates the installation of small-area plates and enables the anode box structure to be suitable for electroplating tanks of larger sizes.

[0012] In an optional embodiment, the height of the side of the plate body abutting against the central strip is higher than the side abutting against the side strip, and the central strip has an exhaust groove opposite to the plate body.

[0013] Beneficial effect: By making the side of the plate body that abuts the central strip higher than the side that abuts the side strip, the entire plate body is tilted. When the anode box is set at the upper anode position of the electroplating tank, the bubbles generated on the lower side of the anode plate will move along the tilted plate body to the exhaust groove and be discharged from the exhaust groove, so that they will not be trapped under the anode plate, thereby avoiding the influence of non-conductive bubbles on the electric lines in the electroplating solution and improving the coating quality.

[0014] In an optional embodiment, the plurality of support bars are respectively arranged opposite to the gap between two adjacent plate bodies, and the shape of the grille is the same as that of the plate body.

[0015] Beneficial effect: By setting the gap between the support bar and the plate body relatively, the area where the support bar faces the plate body surface is minimized, and the influence of the support bar on the distribution of electric lines in the electroplating solution is reduced, so that the coating formed on the surface of the workpiece to be plated is more uniform.

[0016] In an optional embodiment, a conductive plate is connected to the pressing plate, and the conductive plate extends along the surface of the plate body and abuts against the plate body.

[0017] Beneficial effect: By arranging a conductive plate on the pressing plate and extending the conductive plate along the surface of the plate body, the contact area between the pressing plate and the anode plate is increased, so that the electrical connection between the anode plate and the positive electrode of the power supply is more uniform, and the distribution of electric lines in the electroplating solution is more uniform, thereby improving the coating quality.

[0018] In an optional embodiment, the frame includes an inner frame and an outer frame suitable for installing anode cloth or ion membrane, the inner frame is connected to the outer frame by fasteners, the mounting strip is located at the inner periphery of the inner frame, the connecting frame is connected to the outer frame, the edge of the anode cloth or the ion membrane is folded and extends to the gap between the inner frame and the outer frame, and the inner frame and the outer frame clamp the edge of the anode cloth, or clamp the edge of the ion membrane.

[0019] Beneficial effect: By setting the frame to a structure including a nested inner frame and an outer frame, each edge position of the anode cloth or ion membrane extends into the gap between the outer frame and the inner frame when installing, and the outer frame and the inner frame are locked by fasteners, so that the anode cloth or ion membrane is evenly clamped around, making the installation of the anode cloth or ion membrane more secure.

[0020] In an optional embodiment, the connection frame and the support bar are integrally formed with a side facing the anode plate and is configured as a downwardly convex arc surface, and the surface of the frame opposite to the connection frame is configured as an arc shape adapted to the connection frame.

[0021] Beneficial effect: By setting the connection frame and the support bar as a whole into a downwardly protruding arc surface, the anode cloth or ion membrane fixed thereon forms an arc surface accordingly. When the bubbles from the lower side of the ion membrane float up to the ion membrane or the anode cloth, they will move upward along the arc surface of the ion membrane, and will not be retained on the lower side of the ion membrane or the anode cloth to form a non-conductive area, thereby further ensuring the uniformity of the electric lines in the electroplating solution.

[0022] In an optional embodiment, the connection frame and the support bar of the support structure are integrally provided and formed by milling a plate.

[0023] Beneficial effect: Since the connection frame and support bars of the support structure are formed by integrally cutting the plate, the support structure as a whole can have the required structural strength while having a smaller thickness, further reducing the obstruction and shielding of the power lines and avoiding the impact on the uniformity of the power lines.

[0024] In the second aspect, the utility model also provides an anode structure of an electroplating tank, comprising: an anode plate, electrically connected to the positive electrode of a power source; a functional membrane, comprising an ion membrane or an anode cloth, wherein the ion membrane is suitable for blocking bubbles and allowing electric lines to pass through, and the anode cloth is suitable for filtering impurities and allowing electric lines to pass through; the above-mentioned anode box, wherein the anode plate is installed on the installation structure, and the functional membrane is located on the side of the connecting frame close to the anode plate.

[0025] Beneficial effect: By adopting the above-mentioned anode box at the anode structure of the electroplating tank, the installation structure of the anode plate is simple and the equipment steps are easy to operate. At the same time, the functional membrane is supported by the supporting structure, which reduces the possibility of the middle part of the membrane body falling under the influence of gravity and causing pressure on the installation position around the functional membrane. The functional membrane is limited by the cooperation of the supporting structure and the installation assembly, thereby reducing the possibility of the functional membrane being separated from its original position when the plating solution is disturbed, which has an adverse effect on the electroplating process, and improves the uniformity and stability of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of an anode box according to an embodiment of the utility model, which is used to reflect the overall structure;

[0028] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0029] Figure 3 for Figure 1 Schematic diagram of another perspective of an anode box.

[0030] Description of reference numerals:

[0031] 100, installation assembly; 101, frame; 1011, inner frame; 1012, outer frame; 102, installation strip; 1021, side strip; 1022, center strip; 200, support structure; 201, connection frame; 202, support strip; 2023, exhaust groove; 300, pressure plate; 301, conductive plate; 400, anode plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] Combine the following Figures 1 to 3 , describing an embodiment of the utility model.

[0034] According to an embodiment of the present utility model, on the one hand, an anode box is provided, see Figures 1 to 3 , including: an installation component 100 and a support structure 200, wherein the installation component 100 includes a frame 101 and a mounting bar 102, the frame 101 is installed on the base frame of the electroplating tank, the mounting bar 102 is connected to the inner periphery of the frame 101 and is suitable for supporting the anode plate 400 of the electroplating tank, and a pressing plate 300 is installed on the frame 101, and the pressing plate 300 presses the anode plate 400 against the mounting bar 102; the support structure 200 is arranged on a side of the frame 101 close to the workpiece to be plated, including a connecting frame 201 and a plurality of supporting bars 202, the connecting frame 201 is connected to the frame 101, and the plurality of supporting bars 202 are all located on the inner periphery of the connecting frame 201, and are spliced ​​to form a grid.

[0035] Specifically, the frame 101 is a rectangular frame, and the mounting bar 102 is located on the inner side of the frame 101. The present embodiment does not limit the specific mounting structure and distribution form of the mounting bar 102. The mounting bar 102 can be connected to the frame 101 by fasteners, or can be connected to the frame 101 by bonding, or can be integrally formed with the frame 101. In addition, the mounting bar 102 can be distributed on the inner wall of the frame 101 to form a supporting structure for placing the anode plate 400. In some embodiments not shown, the mounting bar 102 can also be spliced ​​on the inner side of the frame 101 to form a frame structure to form a frame structure that supports the anode plate 400. The anode cloth or ion membrane of the electroplating tank is located on the side of the connecting frame 201 close to the anode plate 400, thereby filtering impurities in the electroplating solution.

[0036] It should be noted that the anode plate 400 is a titanium mesh, and the anode plate 400 can be a whole titanium mesh plate, or can be composed of multiple titanium mesh plates. In some embodiments not shown, when the anode plate 400 is composed of multiple titanium mesh plates and the mounting bars 102 are spliced ​​inside the frame 101 to form a frame structure, each mounting bar 102 spliced ​​to form the frame structure is arranged opposite to the gap between the titanium meshes and extends along the extension direction of the gap between the titanium meshes.

[0037] In this embodiment, the anode plate 400 of the electroplating tank is installed and limited by setting the frame 101 and the mounting bar 102. The support structure 200 is set on the side of the frame 101 and the mounting bar 102 away from the anode plate 400. The support bars are spliced ​​to form a grid, which can effectively support the anode cloth or ion membrane over a large area, and prevent the middle part of the anode cloth or ion membrane from sagging and causing great pressure on the surrounding installation and fixing structures. At the same time, the grid-shaped splicing has little shielding effect on the electric lines in the electroplating solution, avoiding affecting the quality of the coating. In addition, the support structure 200 and the mounting assembly 100 jointly form a space for limiting the anode cloth or ion membrane, reducing the possibility of the ion membrane or anode cloth being separated from the original position.

[0038] In one embodiment, the anode plate 400 includes a plurality of plate bodies, and a plurality of pressing plates 300 are provided, with at least one pressing plate 300 pressed on each plate body, and the pressing plate 300 is conductive and connected to the positive electrode of the power source.

[0039] In this embodiment, by making the pressing plate 300 conductive, the pressing plate 300 can serve as a fastening structure for pressing the anode plate 400 onto the mounting bar 102, and can also serve as a power connection component for connecting the anode plate 400 to the electrode, thereby achieving connection between the anode plate 400 and the positive electrode of the power supply, thereby reducing the number of structures, lowering costs, and simplifying the assembly steps, providing convenience for maintenance work.

[0040] In one embodiment, the mounting strip 102 includes a side strip 1021 and a central strip 1022. The side strip 1021 abuts against the inner wall of the frame 101 and extends along the length direction of the inner wall of the frame 101. The central strip 1022 is arranged in the middle of the frame 101 and its two ends are respectively connected to the two inner walls opposite to the frame 101. A plurality of plates are arranged on both sides of the central strip 1022, and one side of the plate is abutted against the side of the side strip 1021 facing the anode plate 400, and the other side is abutted against the side of the central strip 1022 facing the anode plate 400.

[0041] In this embodiment, by providing a central strip 1022 and side strips 1021, the central strip 1022 divides the inner area of ​​the frame 101 into two equal parts, which facilitates the installation of small-area panels and enables the anode box structure to be suitable for larger-sized electroplating tanks.

[0042] In one embodiment, the height of the side of the plate body abutting against the central strip 1022 is higher than the side abutting against the side strip 1021 , and the central strip 1022 has an exhaust groove 2023 opposite to the plate body.

[0043] In the present embodiment, the entire plate body is tilted by making the side of the plate body abutting against the central strip 1022 higher than the side abutting against the side strip 1021. When the anode box is set at the upper anode position of the electroplating tank, the bubbles generated on the lower side of the anode plate 400 will move along the tilted plate body to the exhaust groove 2023 and be discharged from the exhaust groove 2023, so that they will not be retained under the anode plate 400, thereby avoiding the influence of non-conductive bubbles on the electric lines in the electroplating solution, thereby improving the coating quality.

[0044] In one embodiment, a plurality of support bars 202 are respectively disposed opposite to the gap between two adjacent plates, and the shape of the grid is the same as the shape of the plate.

[0045] In this embodiment, the gap between the support bar 202 and the plate body is relatively set, thereby minimizing the area where the support bar 202 faces the plate surface, reducing the influence of the support bar 202 on the distribution of electric lines in the electroplating solution, and making the coating formed on the surface of the workpiece to be plated more uniform.

[0046] In one embodiment, a conductive plate 301 is connected to the pressing plate 300 , and the conductive plate 301 extends along the surface of the plate body and abuts against the plate body.

[0047] In this embodiment, a conductive plate 301 is provided on the pressing plate 300 and the conductive plate 301 is extended along the surface of the plate body, thereby increasing the contact area between the pressing plate 300 and the anode plate 400, thereby making the electrical connection between the anode plate 400 and the positive electrode of the power supply more uniform, thereby making the distribution of electric lines in the electroplating solution more uniform, and improving the coating quality.

[0048] In one embodiment, the frame 101 includes an inner frame 1011 and an outer frame 1012, the inner frame 1011 and the outer frame 1012 are connected by fasteners, the mounting strip 102 is located at the inner periphery of the inner frame 1011, the connecting frame 201 is connected to the outer frame 1012, the edge of the anode cloth or the ion membrane is folded and extends to the gap between the inner frame 1011 and the outer frame 1012, and the inner frame 1011 and the outer frame 1012 clamp the edge of the anode cloth, or clamp the edge of the ion membrane.

[0049] Specifically, the inner frame 1011 is formed by four rods connected end to end, and the four rods are respectively connected to the outer frame 1012 through fasteners.

[0050] In addition, specifically, the outer frame 1012 and the connection frame 201 may be integrally formed, may be adhesively connected, or may be installed and connected via fasteners.

[0051] In this embodiment, by setting the frame 101 to a structure including a nested inner frame 1011 and an outer frame 1012, each edge position of the anode cloth or ion membrane extends into the gap between the outer frame 1012 and the inner frame 1011 when the anode cloth or the ion membrane is installed, and the outer frame 1012 and the inner frame 1011 are locked by fasteners, thereby evenly clamping the anode cloth or the ion membrane on all sides, making the installation of the anode cloth or the ion membrane more secure.

[0052] In one embodiment, the connection frame 201 and the support bar 202 are integrally formed so that the side facing the anode plate 400 is configured to be a downwardly convex arc surface, and the surface of the frame 101 opposite to the connection frame 201 is configured to be an arc shape adapted to the connection frame 201 .

[0053] In this embodiment, the connection frame 201 and the support bar 202 are integrally arranged to be a downwardly protruding arc surface, so that the anode cloth or ion membrane fixed thereto forms an arc surface accordingly. When the bubbles from the lower side of the ion membrane float up to the ion membrane or the anode cloth, they move upward along the arc surface of the ion membrane, and will not be retained on the lower side of the ion membrane or the anode cloth to form a non-conductive area, thereby further ensuring the uniformity of the electric lines in the electroplating solution.

[0054] In one embodiment, the connection frame 201 and the support bar 202 of the support structure 200 are integrally provided and formed by milling of a plate.

[0055] In this embodiment, since the connection frame 201 and the support bar 202 of the support structure 200 are formed by integrally cutting the plate, the support structure 200 as a whole can have the required structural strength while having a smaller thickness, further reducing the obstruction and shielding of the power lines and avoiding the impact on the uniformity of the power lines.

[0056] In some of the above embodiments, it should be noted that the fastener may be a screw, or may be a bolt, a pin or other part with a fastening function.

[0057] According to an embodiment of the utility model, on the other hand, an anode structure of an electroplating tank is also provided, comprising an anode plate 400, a functional membrane and the above-mentioned anode box, wherein the anode plate 400 is electrically connected to the positive pole of a power source; the functional membrane comprises an ion membrane or an anode cloth, the ion membrane is suitable for blocking bubbles and allowing electric lines to pass, and the anode cloth is suitable for filtering impurities and allowing electric lines to pass; in the above-mentioned anode box, the anode plate 400 is mounted on the mounting structure, and the functional membrane is located on the side of the connecting frame 201 close to the anode plate 400.

[0058] In the present embodiment, by adopting the above-mentioned anode box at the anode structure of the electroplating tank, the installation structure of the anode plate 400 is simple and the equipment steps are easy to operate. At the same time, the functional membrane is supported by the support structure 200, which reduces the possibility of the middle part of the membrane body falling under the influence of gravity and causing pressure on the installation position around the functional membrane. The functional membrane is limited by the cooperation of the support structure 200 and the installation assembly 100, thereby reducing the possibility of the functional membrane being separated from its original position when the plating solution is disturbed, which has an adverse effect on the electroplating process, thereby improving the uniformity and stability of the coating.

[0059] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An anode box, characterized in that: include: The mounting assembly (100) comprises a frame (101) and a mounting bar (102), wherein the frame (101) is mounted on a base frame of an electroplating tank, the mounting bar (102) is connected to the inner periphery of the frame (101) and is suitable for supporting an anode plate (400) of the electroplating tank, and a pressing plate (300) is mounted on the frame (101), and the pressing plate (300) presses the anode plate (400) against the mounting bar (102); The support structure (200) is arranged on a side of the frame (101) close to the workpiece to be plated, and comprises a connection frame (201) and a plurality of support bars (202); the connection frame (201) is connected to the frame (101); the plurality of support bars (202) are all located on the inner periphery of the connection frame (201) and are spliced ​​to form a grid.

2. The anode box according to claim 1, characterized in that: The anode plate (400) comprises a plurality of plate bodies, and a plurality of the pressing plates (300) are provided, with at least one pressing plate (300) being pressed tightly against each of the plate bodies, and the pressing plate (300) is conductive and connected to the positive electrode of the power supply.

3. The anode box according to claim 2, characterized in that: The mounting strip (102) comprises a side strip (1021) and a central strip (1022); the side strip (1021) is in contact with the inner peripheral wall of the frame (101) and extends along the length direction of the inner peripheral wall of the frame (101); the central strip (1022) is arranged in the middle of the frame (101) and its two ends are respectively connected to two inner peripheral walls opposite to the frame (101); a plurality of plate bodies are arranged on both sides of the central strip (1022), and one side of the plate body is in contact with a side of the side strip (1021) facing the anode plate (400), and the other side is in contact with a side of the central strip (1022) facing the anode plate (400).

4. The anode box according to claim 3, characterized in that: The height of the side of the plate body abutting against the central strip (1022) is higher than the side abutting against the side strip (1021), and the central strip (1022) has an exhaust groove (2023) opposite to the plate body.

5. The anode box according to claim 2, characterized in that: The plurality of support bars (202) are respectively arranged opposite to the gap between two adjacent plates, and the shape of the grille is the same as that of the plate.

6. The anode box according to claim 2, characterized in that: A conductive plate (301) is connected to the pressing plate (300), and the conductive plate (301) extends along the surface of the plate body and abuts against the plate body.

7. The anode box according to claim 1, characterized in that: The frame (101) comprises an inner frame (1011) and an outer frame (1012) suitable for installing anode cloth or ion membrane, the inner frame (1011) and the outer frame (1012) are connected by fasteners, the installation strip (102) is located at the inner periphery of the inner frame (1011), the connection frame (201) is connected to the outer frame (1012), the edge of the anode cloth or the ion membrane is folded and extends to the gap between the inner frame (1011) and the outer frame (1012), and the inner frame (1011) and the outer frame (1012) clamp the edge of the anode cloth or clamp the edge of the ion membrane.

8. The anode box according to any one of claims 1 to 7, characterized in that The integral body formed by the connection frame (201) and the support bar (202) is configured to have a downwardly convex curved surface on one side facing the anode plate (400), and the surface of the frame (101) opposite to the connection frame (201) is configured to have an arc shape adapted to the connection frame (201).

9. The anode box according to claim 8, characterized in that: The connection frame (201) and the support bar (202) of the support structure (200) are integrally arranged and formed by milling a plate.

10. An anode structure for an electroplating tank, characterized in that: include: an anode plate (400), electrically connected to the positive electrode of a power source; Functional membranes, including ion membranes or anode cloths, wherein the ion membranes are adapted to block air bubbles and allow electric lines to pass through, and the anode cloths are adapted to filter impurities and allow electric lines to pass through; In the anode box according to any one of claims 1 to 9, the anode plate (400) is mounted on a mounting structure, and the functional membrane is located on a side of the connection frame (201) close to the anode plate (400).

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