A circuit board surface coating device

Abstract

The utility model provides a kind of circuit board surface coating device, including groove body, rim, groove bottom, the rim is fixedly connected with a circle at the edge of groove body top surface, the bottom of groove body is fixedly connected with groove bottom;High fixedly connected with liquid inlet pipe in the side of groove body, the side of groove bottom is fixedly connected with liquid outlet pipe;The bottom of groove bottom is fixedly connected with waste pipe, manual valve is installed on waste pipe;Heating pipe is embedded in the two walls of groove body.The utility model has the advantages that: the whole collection tray filled with sediment is taken out from groove body along track.In groove body outside, sediment on collection tray can be easily cleaned (using high-pressure flushing means), which is much more convenient than cleaning into groove body or directly groove bottom, after cleaning, clean collection tray is put into groove bottom again, production can be resumed, greatly reducing downtime, avoiding workers to contact chemicals, and it is also convenient for unified recovery and treatment of sediment, cleaning is convenient.

Description

Technical Field

[0001] This utility model relates to the field of circuit board coating technology, and in particular to a circuit board surface coating device. Background Technology

[0002] Surface coating of circuit boards has become a crucial step in ensuring their conductivity, corrosion resistance, and solderability. Electroplating, a common surface treatment technology, significantly improves the electrical performance and lifespan of circuit boards by depositing metal or alloy coatings on their surfaces. The coating equipment, as the core equipment for this process, is directly related to coating quality, production efficiency, and operating costs due to its well-designed structure.

[0003] Currently, common circuit board plating equipment typically employs a fixed tank structure, including a tank for holding the plating solution, an edge at the top of the tank, and a bottom. The sides of the tank have inlet and outlet pipes for injecting and discharging the plating solution, respectively; the bottom of the tank has a waste drain pipe and valve for thorough cleaning of waste liquid. To maintain optimal activity of the plating solution, heating elements are usually built into the tank walls for temperature control. During electroplating, an anode mechanism is installed inside the tank and connected to the positive terminal of an external power source, while the circuit board, acting as the cathode, is placed in the plating solution, where metal ions are deposited under the influence of an electric field.

[0004] However, such devices still have significant drawbacks in practical use. Especially during continuous electroplating, precipitates inevitably form in the plating solution, including undissolved salts, impurity particles, or reaction byproducts. These precipitates gradually accumulate at the bottom of the tank, not only affecting the stability of the plating solution composition and leading to decreased coating uniformity, but also potentially adhering to the circuit board surface, causing defects or even short circuit risks. Traditional cleaning methods require completely draining the plating solution, with operators entering the tank for manual cleaning. This process is not only time-consuming and labor-intensive, extending downtime, but also exposes workers to direct contact with chemical liquids and residues, posing occupational health and safety risks. Therefore, a circuit board surface coating device is proposed to address these problems. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide a circuit board surface coating device to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, one embodiment of the present invention provides a circuit board surface coating device, including a tank, an edge, and a tank bottom. An edge is fixedly connected to the edge of the top surface of the tank, and a tank bottom is fixedly connected to the bottom of the tank. An inlet pipe is fixedly connected to the high position of the side of the tank, and an outlet pipe is fixedly connected to the side of the bottom of the tank. A waste discharge pipe is fixedly connected to the bottom of the tank, and a manual valve is installed on the waste discharge pipe; Heating tubes are embedded in the two walls of the tank, and the ends of the heating tubes extend out of the surface of the tank and are connected to an external power source. An anode mechanism is fixedly connected to one end of the inner side of the tank; A track is fixedly connected to the middle of the inner side of the tank, and a collection tray is movably connected to the outer surface of the track. The bottom surface of the collection tray is inclined, and the collection tray is movably connected to the inner side of the tank body and the bottom of the tank. Initially, the collection tray is located at the bottom of the inner side of the bottom of the tank. The top surface of the collection tray is fixedly connected to three edges with baffles, and the top end of the collection tray is open. The middle of the side of the collection tray is matched with a track, and the end of the collection tray is provided with a notch for matching the anode mechanism; A connector is fixedly connected to the top of the flange, a guide wheel is movably connected to the inner side of the connector, a cable is movably connected to the outer surface of the guide wheel, one end of the cable is fixedly connected to the flange, and the other end of the cable is wound around the output end of the winch.

[0008] Solution circulation and inlet / outlet: The solution required for coating can be injected into the tank through the inlet pipe fixedly connected at a high position on the side of the tank, providing the necessary chemical substances for the coating process. The outlet pipe fixedly connected to the side of the bottom of the tank can be used to drain the solution from the tank during or after the coating process, realizing operations such as solution replacement or circulation.

[0009] Waste liquid discharge: A waste discharge pipe is fixedly connected to the bottom of the tank, and a manual valve is installed on it. When the tank is cleaned, the liquid is discharged through the waste discharge pipe.

[0010] Temperature control: Heating tubes are embedded in both walls of the tank, with the ends of the heating tubes extending out of the tank surface and connected to an external power source. When the external power is turned on, the heating tubes generate heat, transferring the heat to the solution inside the tank, thereby heating the solution to meet the temperature requirements of different coating processes, as temperature affects the coating rate, quality, and other performance characteristics.

[0011] Electroplating process: An anode mechanism fixedly connected to one end of the inner side of the plating tank is connected to the positive terminal of an external power supply during electroplating, while the circuit board to be plated is connected to the negative terminal of the external power supply as the cathode. Under the action of direct current, metal ions or ions required for plating on the anode mechanism lose electrons and undergo an oxidation reaction, entering the solution. The corresponding ions in the solution move towards the circuit board, which acts as the cathode, under the action of the electric field, and gain electrons on the surface of the circuit board, undergoing a reduction reaction and depositing on the surface of the circuit board to form a coating, thus realizing the plating operation on the surface of the circuit board.

[0012] Preferably, in any of the above solutions, the tank body is welded to the edge, and both the inlet pipe and the outlet pipe are horizontally positioned.

[0013] The above technical solution employs the following: The circuit board surface coating device includes a tank body with a welded rim around the top edge and a fixed connection to the tank bottom. An inlet pipe is horizontally installed at a high position on the side of the tank body, and an outlet pipe is horizontally installed on the side of the tank bottom, with the inlet pipe directly above the outlet pipe. A waste discharge pipe is connected to the bottom of the tank, and a manual valve is installed on the pipe. Electric heating tubes are embedded in the two walls of the tank body, with the ends of the heating tubes connected to an external power source. A frame-type anode mechanism is bolted to one end of the tank body.

[0014] A track is vertically mounted on the center of the tank via screws, with the track height exceeding the tank depth. A collection tray is movably connected to the track. The bottom of the collection tray is sloped, and three edges of the top surface are fixed with retaining walls. One end is open. The side of the collection tray matches the track, and the end has a notch corresponding to the anode mechanism. Four sets of connectors are fixed to the top of the opening, each set containing a guide wheel with a cable wound around it. One end of the cable is fastened to four points on the retaining wall of the collection tray, and the other end is connected to a winch or manual lifting device.

[0015] The core structure of this device, employing the above technical solution, consists of a track, a collection tray, side flanges, a connector, guide wheels, and cables. A liftable collection tray is installed inside the tank and at the bottom. The top surface of the collection tray has three side flanges with openings at the top. The track serves as the path for the collection tray's lifting and lowering. Cables are evenly distributed at four points along the side flanges of the collection tray. One end of each cable is connected to a winch or manually used for hoisting. When cleaning is required, the liquid is drained through the outlet pipe. A hand-operated hoist or small winch is used to pull the cables, lifting the entire collection tray filled with sediment out of the tank along the track. Sediment on the collection tray can be easily cleaned from outside the tank (using high-pressure washing), which is much more convenient than cleaning inside the tank or directly at the bottom. After cleaning, the clean collection tray is placed back into the tank, and production can resume. This greatly reduces downtime, avoids worker contact with chemicals, and facilitates the unified recycling and disposal of sediment, making cleaning convenient.

[0016] Preferably, in any of the above embodiments, the inlet pipe is located directly above the outlet pipe, and the heating pipe is an electric heating type.

[0017] Preferably, in any of the above embodiments, the anode mechanism is bolted to one end of the tank body, and the anode mechanism is a frame type.

[0018] Preferably, in any of the above embodiments, the track is vertically arranged, the track is installed by screws, and the height of the track is greater than the height of the trough.

[0019] Preferably, in any of the above embodiments, the collection tray can be raised above the trough, and four sets of guide wheels are symmetrically distributed about the center plane of the trough.

[0020] Preferably, in any of the above schemes, the ends of the cable are fastened to four points on the edge.

[0021] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: This circuit board surface coating device is designed using a combination of rails, a collection tray, baffles, connectors, guide wheels, and cables. A liftable collection tray is installed inside the tank and at the bottom. The top surface of the collection tray has baffles at three edges, with an opening at the top. The rails serve as the path for the collection tray's movement. Cables are evenly distributed at four points along the baffles of the collection tray. One end of each cable is connected to a winch or manually used for hoisting. When cleaning is needed, the liquid is drained through the outlet pipe, and the entire collection tray filled with sediment is lifted from the tank along the rails using a hand-operated hoist or a small winch. The sediment on the collection tray can be easily cleaned from outside the tank (using high-pressure washing), which is much more convenient than cleaning inside the tank or directly from the bottom. After cleaning, the clean collection tray is placed back into the tank, and production can resume. This greatly reduces downtime, avoids worker contact with chemicals, and facilitates the unified recycling and disposal of sediment, making cleaning convenient.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the tank body of this utility model; Figure 3 This is a schematic diagram of the structure of the collection tray of this utility model; Figure 4 This is a structural schematic diagram of the present invention from a second perspective.

[0024] In the diagram: 1-tank body, 2-rim, 3-tank bottom, 4-inlet pipe, 5-outlet pipe, 6-waste discharge pipe, 7-heating pipe, 8-anode mechanism, 9-track, 10-collection tray, 11-sidewall, 12-connector, 13-guide wheel, 14-cable. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figure 1-4 As shown, the circuit board surface coating device includes a tank 1, an edge 2, and a tank bottom 3. An edge 2 is fixedly connected to the edge of the top surface of the tank 1, and a tank bottom 3 is fixedly connected to the bottom of the tank 1. A liquid inlet pipe 4 is fixedly connected to the high position on the side of the tank body 1, and a liquid outlet pipe 5 is fixedly connected to the side of the bottom of the tank 3. A waste discharge pipe 6 is fixedly connected to the bottom of the tank bottom 3, and a manual valve is installed on the waste discharge pipe 6; Heating pipes 7 are embedded in the two walls of the tank 1, and the ends of the heating pipes 7 are led out of the surface of the tank 1 and connected to an external power source. An anode mechanism 8 is fixedly connected to one end of the inner side of the tank body 1; A track 9 is fixedly connected to the middle of the inner side of the tank 1. A collection tray 10 is movably connected to the outer surface of the track 9. The bottom surface of the collection tray 10 is an inclined surface. The collection tray 10 is movably connected to the inner side of the tank 1 and the tank bottom 3. Initially, the collection tray 10 is located at the bottom of the inner side of the tank bottom 3. The top surface of the collection tray 10 is fixedly connected with three edges of the baffle 11, and the upper end of the collection tray 10 is open. The middle of the side of the collection tray 10 is matched with the track 9, and the end of the collection tray 10 is provided with a notch for matching the anode mechanism 8; A connector 12 is fixedly connected to the top of the flange 2. A guide wheel 13 is movably connected to the inner side of the connector 12. A cable 14 is movably connected to the outer surface of the guide wheel 13. The end of the cable 14 is fixedly connected to the flange 11. The other end of the cable 14 is wound around the output end of the winch.

[0028] Example 1: The tank body 1 is welded to the edge 2. Both the inlet pipe 4 and outlet pipe 5 are horizontally positioned. The inlet pipe 4 is located directly above the outlet pipe 5. The heating pipe 7 is electrically heated. The anode mechanism 8 is bolted to one end of the inner side of the tank body 1; the anode mechanism 8 is a frame type. The track 9 is vertically positioned and installed with screws; the height of the track 9 is greater than the height of the tank body 1. The collection tray 10 can be raised above the tank body 1. Four sets of guide wheels 13 are symmetrically distributed about the center plane of the tank body 1. The ends of the cables 14 are fastened to four points on the edge 11.

[0029] Example 2: The circuit board surface coating device includes a tank 1, with a flange 2 welded to the top edge of the tank 1, and a tank bottom 3 fixedly connected to the bottom. An inlet pipe 4 is horizontally installed at a high position on the side of the tank 1, and an outlet pipe 5 is horizontally installed on the side of the tank bottom 3, with the inlet pipe 4 directly above the outlet pipe 5. A waste discharge pipe 6 is connected to the bottom of the tank bottom 3, and a manual valve is installed on the pipe. Electric heating tubes 7 are embedded in the two walls of the tank 1, with the ends of the heating tubes 7 leading out to connect to an external power source. A frame-type anode mechanism 8 is bolted to one end of the inner side of the tank 1.

[0030] A track 9 is vertically mounted on the inner center of the tank 1 via screws. The height of the track 9 is greater than the depth of the tank 1. A collection tray 10 is movably connected to the track 9. The bottom surface of the collection tray 10 is sloping, and three edges of its top surface are fixed with retaining edges 11. One end is open. The side of the collection tray 10 matches the track 9, and the end has a notch corresponding to the anode mechanism 8. Four sets of connectors 12 are fixed to the top of the opening 2. Each set of connectors 12 has a guide wheel 13 installed inside, and a cable 14 is wound around the guide wheel 13. One end of the cable 14 is fastened to four points on the retaining edges 11 of the collection tray 10, and the other end is connected to a winch or manual lifting equipment.

[0031] The working principle of this utility model is as follows: Solution circulation and inlet / outlet: The solution required for coating can be injected into the tank 1 through the inlet pipe 4 fixedly connected at a high position on the side of the tank 1, providing the necessary chemical substances for the coating process. The outlet pipe 5 fixedly connected to the side of the tank bottom 3 can be used to drain the solution in the tank 1 during or after the coating process, realizing operations such as solution replacement or circulation.

[0032] Waste liquid discharge: A waste discharge pipe 6 is fixedly connected to the bottom of tank 3, and a manual valve is installed on it. When tank 1 is cleaned, the liquid is discharged through the waste discharge pipe 6.

[0033] Temperature control: Heating tubes 7 are embedded in the two walls of the tank 1. The ends of the heating tubes 7 extend out of the surface of the tank 1 and are connected to an external power source. When the external power source is turned on, the heating tubes 7 generate heat and transfer the heat to the solution in the tank 1, thereby heating the solution to meet the temperature requirements of different coating processes, as temperature affects the coating rate, quality, and other properties.

[0034] Electroplating process: An anode mechanism 8 is fixedly connected to one end of the inner side of the tank 1. During electroplating, it is connected to the positive terminal of an external power supply, while the circuit board to be plated is connected to the negative terminal of the external power supply as the cathode. Under the action of direct current, metal ions or ions required for plating on the anode mechanism 8 lose electrons and undergo an oxidation reaction, entering the solution. The corresponding ions in the solution move towards the circuit board, which acts as the cathode, under the action of the electric field, and gain electrons on the surface of the circuit board, undergoing a reduction reaction and depositing on the surface of the circuit board to form a coating, thereby realizing the plating operation on the surface of the circuit board.

[0035] Compared with the prior art, the present invention has the following advantages: The circuit board surface coating device is configured with a track 9, a collection tray 10, baffles 11, a connector 12, guide wheels 13, and cables 14. A liftable collection tray 10 is installed inside the tank body 1 and the tank bottom 3. The top surface of the collection tray 10 has baffles 11 at three edges, with an opening at the top end. The track 9 serves as the path for the collection tray 10 to move up and down. Cables 14 are evenly distributed at four points on the baffles 11 of the collection tray 10. One end of the cable 14 is connected to a winch or manually used for hoisting. When cleaning is required, the liquid is drained through the outlet pipe 5. The entire collection tray 10 filled with sediment is lifted out of the tank body 1 along the track 9 by pulling the cables 14 using a hand-operated hoist or a small winch. The sediment on the collection tray 10 can be easily cleaned outside the tank 1 (using high-pressure rinsing), which is much more convenient than cleaning inside the tank 1 or directly at the bottom 3 of the tank. After cleaning, the clean collection tray 11 can be put back into the bottom 3 of the tank to resume production, greatly reducing downtime, avoiding workers' contact with chemicals, and facilitating the unified recycling and treatment of sediment. Cleaning is convenient.

Claims

1. A circuit board surface coating apparatus, characterized in that, It includes a trough body (1), a rim (2), and a trough bottom (3). A rim (2) is fixedly connected to the edge of the top surface of the trough body (1), and a trough bottom (3) is fixedly connected to the bottom of the trough body (1). An inlet pipe (4) is fixedly connected to the high position of the side of the tank (1), and an outlet pipe (5) is fixedly connected to the side of the bottom of the tank (3). The bottom of the tank bottom (3) is fixedly connected to a waste discharge pipe (6), and a manual valve is installed on the waste discharge pipe (6); Heating pipes (7) are embedded in the two walls of the tank (1), and the ends of the heating pipes (7) are led out of the surface of the tank (1) and connected to an external power source. An anode mechanism (8) is fixedly connected to one end of the inner side of the tank (1); A track (9) is fixedly connected to the middle of the inner side of the trough (1), and a collection tray (10) is movably connected to the outer surface of the track (9). The bottom surface of the collection tray (10) is an inclined surface. The collection tray (10) is movably connected to the inner side of the trough (1) and the bottom of the trough (3). Initially, the collection tray (10) is located at the bottom of the inner side of the bottom of the trough (3). The top surface of the collection tray (10) is fixedly connected with three edges of the guard (11), and the top end of the collection tray (10) is open; The middle of the side of the collection tray (10) is matched with the track (9), and the end of the collection tray (10) is provided with a notch for matching the anode mechanism (8); A connector (12) is fixedly connected to the top of the opening (2). A guide wheel (13) is movably connected to the inner side of the connector (12). A cable (14) is movably connected to the outer surface of the guide wheel (13). The end of the cable (14) is fixedly connected to the sidewall (11). The other end of the cable (14) is wound around the output end of the winch.

2. The circuit board surface coating apparatus as described in claim 1, characterized in that: The tank body (1) is welded to the edge (2), and the inlet pipe (4) and outlet pipe (5) are both horizontally placed.

3. The circuit board surface coating apparatus as described in claim 2, characterized in that: The inlet pipe (4) is located directly above the outlet pipe (5), and the heating pipe (7) is an electric heating type.

4. The circuit board surface coating apparatus as described in claim 3, characterized in that: The anode mechanism (8) is installed at one end of the inner side of the tank (1) by bolts. The anode mechanism (8) is a frame type.

5. The circuit board surface coating apparatus as described in claim 4, characterized in that: The track (9) is set vertically and is installed by screws. The height of the track (9) is greater than the height of the trough (1).

6. The circuit board surface coating apparatus as described in claim 5, characterized in that: The collection tray (10) can be raised above the tank (1), and the guide wheels (13) are symmetrically distributed in four groups about the center plane of the tank (1).

7. The circuit board surface coating apparatus as described in claim 6, characterized in that: The ends of the cable (14) are fastened to four points on the retaining edge (11).

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