Secondary nickel plating degaussing equipment

Abstract

The utility model relates to the technical field of electroplating equipment and process, in particular to secondary nickel plating degaussing equipment, which comprises a rack, an electroplating control device arranged on the rack, a plurality of electroplating baths and a liquid medicine recovery device, nickel electrodes used for being electrically connected with nickel plating liquid are arranged in the two nickel plating tanks, the nickel electrodes are electrically connected with the electroplating control device, the liquid medicine recovery device is provided with a conductive roller used for being electrically connected with a material belt workpiece, and the conductive roller is electrically connected with the electroplating control device. Due to the fact that the number of the nickel plating tanks is two, in the electroplating work process of the coil stock workpiece, secondary nickel plating is conducted on the coil stock workpiece firstly, then gold plating is conducted on the coil stock workpiece, through bottoming of the secondary nickel plating layer, combination of the gold plating layer and the coil stock workpiece is more compact and reliable, and particularly after secondary nickel plating is conducted, the magnetism of the coil stock workpiece is basically eliminated; the effect is obvious.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating equipment and process, in particular to secondary nickel plating demagnetization equipment. Background Art

[0002] Electroplating is the process of depositing a metal layer onto a solid surface through electrochemical methods. Electroplating is used as a protective layer to prevent corrosion and as a decorative layer on workpiece surfaces, or to modify the surface properties of base materials to produce metals or alloys with specific compositions and properties. As an important surface treatment technology, electroplating has a wide range of applications in various fields.

[0003] Nickel plating is a crucial intermediate process. The nickel layer serves as a base layer, connecting the substrate and the working layer, effectively increasing the bonding strength between them. It also improves the surface flatness and brightness of the metal, providing excellent decorative properties. The nickel layer's high density effectively prevents corrosion, forming a robust protective layer. Consequently, nickel electroplating has been widely used in recent years in industries such as electronic components and semiconductor packaging, particularly on copper and copper alloy-based products, where it serves as an anti-oxidation layer to enhance durability and stability.

[0004] During the processing of the conductive terminals of electronic components, due to the influence of factors such as the processing environment, metal cutting, electroplating milling and electroplating nickel layer, the conductive terminals after electroplating have certain magnetism. The existence of this magnetism will seriously affect the processing quality and product quality of electronic components or semiconductors, and lay hidden dangers for the quality of the final sales products, with obvious defects. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a secondary nickel plating demagnetization device which adds an extra nickel plating process on the basis of the original single nickel plating process to achieve the purpose of demagnetizing a workpiece.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a secondary nickel plating demagnetization device, comprising a frame, an electroplating control device installed on the frame, a plurality of electroplating tanks and a chemical recovery device, the plurality of electroplating tanks including two nickel plating tanks arranged in parallel, both nickel plating tanks are provided with nickel electrodes for being electrically connected to the nickel plating liquid, the nickel electrodes are electrically connected to the electroplating control device, the chemical recovery device is equipped with a conductive roller for being electrically connected to the material strip workpiece, the conductive roller is electrically connected to the electroplating control device.

[0007] Preferably, the electroplating control device includes a rectifier that generates a DC forward pulse current, the nickel electrode is electrically connected to the positive electrode of the output end of the rectifier, and the conductive roller is electrically connected to the negative electrode of the output end of the rectifier.

[0008] Preferably, the rectifier is connected to a pulse digital control box, a display screen and a control panel installed in the pulse digital control box.

[0009] Preferably, the medicine recovery device includes a recovery box, a mounting base arranged in the recovery box, two support rollers fixed to the mounting base, and a conductive roller installed on the mounting base. A vertical long hole is opened on the upper part of the mounting base, and a lifting seat with adjustable height and a horizontal axis fixed to the lifting seat are installed on the rear side of the mounting base. The horizontal axis passes through the vertical long hole and is connected to the conductive roller.

[0010] Preferably, the liquid medicine recovery device further comprises an air nozzle with a nozzle facing the material strip workpiece and an air pipe connected to the air nozzle via an air compressor, and the recovery box is provided with an exhaust hole.

[0011] Preferably, the angle between the nozzle direction of the air nozzle and the traveling direction of the material strip workpiece is 20 degrees to 60 degrees.

[0012] Preferably, there are two air nozzles, which are respectively located on the upper and lower sides of the material strip workpiece.

[0013] Preferably, the conductive roller is made of copper material, and the conductive roller is electrically connected to the electroplating control device through a horizontal axis and a wire.

[0014] Preferably, the recycling box includes a front baffle, a rear baffle, a bottom plate and two side plates connecting the front baffle and the rear baffle. The height of the front baffle is lower than that of the rear baffle. The inner sides of the two side plates are provided with a reflux groove with a lower front and a higher rear. A sealing strip is laterally provided on the upper edge of the front baffle.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a secondary nickel plating demagnetization device. During the nickel electroplating process, a nickel electrode is used as the anode, and the coiled workpiece to be plated is used as the cathode. When direct current is passed through the electrolyte, nickel ions gain electrons at the cathode, thereby being reduced to metallic nickel. This is then deposited on the coiled workpiece at the cathode, forming a uniform and dense nickel coating, which lays a solid foundation for subsequent gold plating.

[0016] During long-term electroplating operations, the applicant accidentally discovered that during the electroplating process of a coiled workpiece, performing the nickel plating process twice unexpectedly eliminated the magnetism of the coiled workpiece. Compared with a coiled workpiece that was only nickel-plated once, the coiled workpiece's magnetism was reduced to over 96%, significantly improving its demagnetization performance. During the operation of the electroplating equipment of the utility model, since there are two nickel plating tanks, during the electroplating process of the coiled workpiece, the coiled workpiece is first nickel-plated twice and then gold-plated. The secondary nickel plating layer provides a more compact and reliable bond between the gold plating layer and the coiled workpiece. In particular, after the secondary nickel plating process, the magnetism of the coiled workpiece is essentially eliminated, resulting in significant efficacy and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the secondary nickel plating demagnetization equipment of the present invention.

[0018] Figure 2 This is a schematic top view of the structure of the secondary nickel plating demagnetization equipment of the present invention.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the medicinal solution recovery device in the secondary nickel plating demagnetization equipment of the utility model.

[0020] Figure 4 This is a schematic diagram of the main structure of the medicinal solution recovery device in the secondary nickel plating demagnetization equipment of the utility model. DETAILED DESCRIPTION

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the embodiments. The contents mentioned in the embodiments are not intended to limit the present invention.

[0022] like Figures 1 to 4 As shown, a secondary nickel plating demagnetization device includes a frame 1, an electroplating control device 4 installed on the frame 1, a plurality of electroplating tanks 2 and a liquid medicine recovery device 3, wherein the plurality of electroplating tanks 2 include two nickel plating tanks 21 arranged in parallel, and both nickel plating tanks 21 are provided with nickel electrodes for electrically connecting to the nickel plating liquid, and the nickel electrodes are electrically connected to the electroplating control device 4, and the liquid medicine recovery device 3 is equipped with a conductive roller 31 for electrically connecting to the material strip workpiece 5, and the conductive roller 31 is electrically connected to the electroplating control device 4.

[0023] During nickel electroplating, a nickel electrode serves as the anode, while the coiled workpiece to be plated serves as the cathode. When direct current is passed through the electrolyte, nickel ions gain electrons at the cathode, reducing them to metallic nickel. This metal is then deposited on the coiled workpiece 5 at the cathode, forming a uniform, dense nickel coating that provides a solid foundation for subsequent gold plating.

[0024] During long-term electroplating operations, the applicant accidentally discovered that during the electroplating process of a coiled workpiece, after the nickel plating process was performed twice, the magnetism of the coiled workpiece was unexpectedly eliminated. Compared with the coiled workpiece that was only nickel-plated once, the magnetism of the coiled workpiece itself was reduced to over 96%, and the demagnetization effect was significantly improved. During the operation of the electroplating equipment of the utility model, since there are two nickel plating tanks 21, during the electroplating process of the coiled workpiece, the coiled workpiece is first nickel-plated twice and then gold-plated. The secondary nickel plating layer provides a more compact and reliable bond between the gold plating layer and the coiled workpiece. In particular, after the secondary nickel plating process, the magnetism of the coiled workpiece is substantially eliminated, with significant efficacy and strong practicality.

[0025] In this embodiment, the electroplating control device 4 includes a rectifier 41 that generates a DC forward pulse current. The nickel electrode is electrically connected to the positive pole of the output end of the rectifier 41, and the conductive roller 31 is electrically connected to the negative pole of the output end of the rectifier 41. During the nickel plating process, a DC forward pulse current is generated by the rectifier 41 for nickel plating processing, which further improves the demagnetization efficiency during the secondary nickel plating processing and is highly creative.

[0026] In this embodiment, the rectifier 41 is connected to a pulse digital control box 42, a display screen and a control panel installed on the pulse digital control box 42, which not only facilitates real-time observation of the current and voltage status during the electroplating process, but also realizes the adjustment of the output parameters of the rectifier 41 through the control panel, and is highly practical.

[0027] In this embodiment, the liquid medicine recovery device 3 includes a recovery box 32, a mounting base 33 disposed within the recovery box 32, two support rollers 34 fixed to the mounting base 33, and a conductive roller 31 mounted on the mounting base 33. A vertical slot 35 is defined in the upper portion of the mounting base 33. A height-adjustable lift 36 and a horizontal shaft 37 fixed to the lift 36 are mounted on the rear side of the mounting base 33. The horizontal shaft 37 passes through the vertical slot 35 and connects to the conductive roller 31. Specifically, the liquid medicine recovery device 3 also includes an air nozzle 38 directed toward the workpiece 5 and an air pipe connected to the air nozzle 38 via an air compressor. An exhaust hole 39 is defined in the recovery box 32.

[0028] During the production process of the electroplating equipment, the workpiece 5 enters the right end of the recovery box 32, is pulled at a constant speed by two pinch rollers, passes through the gap between the support roller 34 and the conductive roller 31, and then exits the left end of the recovery box 32. Due to the support of the support roller 34 and the downward pressure of the conductive roller 31, the contact reliability between the conductive roller 31 and the workpiece 5 is relatively high, ensuring the stable operation of the electroplating process. Since the air nozzle 38 ejects a high-speed airflow during operation, the electroplating liquid remaining on the workpiece 5 is blown into the recovery box 32, effectively avoiding the wear between the washing cotton and the workpiece 5 and the problem of incomplete electroplating liquid recovery. The recovery efficiency is high, solving the problem of existing electroplating equipment requiring frequent unpacking and maintenance, and significantly improving the electroplating efficiency.

[0029] In this embodiment, the angle between the nozzle of the air nozzle 38 and the direction of travel of the workpiece 5 is 20 to 60 degrees. With this structural design, the high-pressure gas ejected from the air nozzle 38 is in the opposite direction of the travel of the workpiece 5, increasing the relative speed between the high-pressure gas and the workpiece 5, and more thoroughly cleaning and recovering the residual plating solution on the workpiece 5, with higher recovery efficiency.

[0030] In this embodiment, there are two air nozzles 38, which are respectively located on the upper and lower sides of the material strip workpiece 5, so as to supplement and blow off the position that one air nozzle 38 cannot reach, and the cleaning and recovery efficiency of the electroplating solution is higher.

[0031] In this embodiment, the conductive roller 31 is made of copper material, and the conductive roller 31 is electrically connected to the electroplating control device 4 through the horizontal shaft 37 and the wire.

[0032] In this embodiment, the recycling box 32 includes a front baffle, a rear baffle, a bottom plate, and two side plates connecting the front and rear baffles. The front baffle is lower than the rear baffle, and the inner sides of the two side plates are provided with a reflow groove that is lower in front and higher in the back. A sealing strip is provided transversely along the upper edge of the front baffle. Specifically, the recycling box 32 also includes a cover plate connected to the upper edges of the two side plates, the lower edge of the cover plate abutting the sealing strip. When the electroplating liquid is blown down by the air nozzle 38, it will fly around in the recycling box 32 and then settle on the inner wall of the recycling box 32. The design of the reflow groove allows the electroplating liquid that settles on the inner wall and cover plate of the recycling box 32 to quickly gather and then flow back from the lowest point of the reflow groove to the bottom of the recycling box 32. The design of the sealing strip helps prevent the electroplating liquid from being discharged with the high-pressure gas and polluting the environment or being wasted, thus being highly practical.

[0033] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A secondary nickel plating demagnetization device, comprising a frame (1), an electroplating control device (4) mounted on the frame (1), a plurality of electroplating tanks (2) and a liquid medicine recovery device (3), characterized in that: The multiple electroplating tanks (2) include two nickel plating tanks (21) arranged in parallel, each of the two nickel plating tanks (21) is provided with a nickel electrode for electrically connecting to the nickel plating solution, and the nickel electrode is electrically connected to the electroplating control device (4). The liquid medicine recovery device (3) is equipped with a conductive roller (31) for electrically connecting to the material strip workpiece (5), and the conductive roller (31) is electrically connected to the electroplating control device (4).

2. The secondary nickel plating demagnetization equipment according to claim 1, characterized in that: The electroplating control device (4) includes a rectifier (41) for generating a direct current forward pulse current, the nickel electrode is electrically connected to the positive electrode of the output end of the rectifier (41), and the conductive roller (31) is electrically connected to the negative electrode of the output end of the rectifier (41).

3. The secondary nickel plating demagnetization equipment according to claim 2, characterized in that: The rectifier (41) is connected to a pulse digital control box (42), a display screen and a control panel installed in the pulse digital control box (42).

4. The secondary nickel plating demagnetization equipment according to claim 1, characterized in that: The liquid medicine recovery device (3) includes a recovery box (32), a mounting base (33) arranged in the recovery box (32), two support rollers (34) fixed to the mounting base (33), and a conductive roller (31) mounted on the mounting base (33), wherein a vertical long hole (35) is opened on the upper part of the mounting base (33), and a lifting seat (36) with adjustable height and a horizontal shaft (37) fixed to the lifting seat (36) are installed on the rear side of the mounting base (33), and the horizontal shaft (37) is connected to the conductive roller (31) after passing through the vertical long hole (35).

5. The secondary nickel plating demagnetization equipment according to claim 4, characterized in that: The liquid medicine recovery device (3) further comprises an air nozzle (38) with a nozzle directed toward the material strip workpiece (5) and an air pipe connected to the air nozzle (38) via an air compressor. The recovery box (32) is provided with an exhaust hole (39).

6. The secondary nickel plating demagnetization equipment according to claim 5, characterized in that: The angle between the nozzle direction of the air nozzle (38) and the traveling direction of the material strip workpiece (5) is 20 degrees to 60 degrees.

7. The secondary nickel plating demagnetization equipment according to claim 5, characterized in that: There are two air nozzles (38), and the two air nozzles (38) are respectively located on the upper and lower sides of the material strip workpiece (5).

8. The secondary nickel plating demagnetization equipment according to claim 4, characterized in that: The conductive roller (31) is made of copper material, and the conductive roller (31) is electrically connected to the electroplating control device (4) via a transverse shaft (37) and a wire.

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