Alkaline etching liquid adding device for circuit board

Abstract

The utility model discloses an alkaline etching liquid adding device for a circuit board, which relates to the field of circuit board processing and comprises an alkaline etching liquid adding device body, one side of the alkaline etching liquid adding device body is fixedly connected with a liquid inlet, and the other side of the alkaline etching liquid adding device body is fixedly connected with a liquid outlet. According to the automatic liquid discharging device, the automatic liquid discharging assembly is arranged, a hydraulic cylinder in the automatic liquid discharging assembly is electrically connected with a power source, so that a movable plate is stressed to move, the air pressure in a liquid discharging cavity is changed, a second ball is stressed to move by increasing the air pressure, and the second ball and a connecting pipe are separated easily; and when the moving plate stops moving, the first relay and the second relay on the moving plate are in contact with each other, so that the electromagnetic valve is opened, the alkaline etching liquid can be discharged from the liquid outlet, and continuous manual operation is avoided.

Description

Technical Field

[0001] The utility model relates to the field of circuit board processing, in particular to a circuit board alkaline etching liquid adding device. Background Art

[0002] PCB is the abbreviation of printed circuit board. Usually, the conductive pattern made of printed circuits, printed components or a combination of the two on the insulating material according to a predetermined design is called a printed circuit. In the process of processing the circuit board, etching liquid is needed to assist the processing.

[0003] In the processing and production process of some existing circuit boards, the commonly used circuit board alkaline etching adding device has a relatively simple structure and often requires continuous manual operation. It is difficult to automatically add a certain amount of alkaline etching solution according to specific circumstances, and the overall operation is relatively inconvenient.

[0004] Therefore, it is necessary to invent a circuit board alkaline etching solution adding device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a circuit board alkaline etching solution adding device to solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit board alkaline etching liquid adding device, comprising an alkaline etching liquid adding device body, one side of the alkaline etching liquid adding device body is fixedly connected with a liquid inlet, the other side of the alkaline etching liquid adding device body is fixedly connected with a liquid outlet, the inside of the liquid outlet is fixedly connected with a solenoid valve, the inside of the alkaline etching liquid adding device body is fixedly connected with a partition, and the inside of the alkaline etching liquid adding device body is divided into a liquid storage chamber and a liquid discharge chamber by the partition;

[0007] An automatic liquid discharge component is arranged inside the liquid discharge chamber, and the automatic liquid discharge component comprises a hydraulic cylinder, and the hydraulic cylinder is fixedly connected to the main body of the alkaline etching liquid adding device, and the telescopic end of the hydraulic cylinder is fixedly connected to a movable plate, and the top of the movable plate is fixedly connected to a first relay, and the inner wall of the liquid discharge chamber is fixedly connected to a second relay, and the second relay is electrically connected to the first relay, and a circular hole is opened on the partition, and the circular hole is located below the partition, and a connecting pipe is fixedly connected in the circular hole, and a first liquid blocking component is arranged inside the connecting pipe, and the first liquid blocking component is located in the liquid discharge chamber;

[0008] The first liquid blocking component includes a fixed rod, which is fixedly connected in the connecting pipe. A second spring is fixedly connected to one side of the fixed rod. An end of the second spring away from the fixed rod is fixedly connected to a second sphere. The second sphere fits tightly with the opening of the connecting pipe.

[0009] Preferably, a second liquid blocking component is provided at one end of the connecting tube away from the second sphere, and the second liquid blocking component is located in the liquid storage chamber. The second liquid blocking component includes a fixing frame, which is fixedly connected to the connecting tube, and the fixing frame is concave in shape. A first spring is fixedly provided on the inner wall of the fixing frame away from the partition, and the end of the first spring is fixedly connected to the first sphere.

[0010] Preferably, a guide rail is provided on one side of the partition, and the guide rail is fixedly connected to the connecting pipe. A quantitative component is provided inside the guide rail, and the quantitative component includes a floating plate, and the floating plate is slidably connected to the guide rail. An electric push rod is fixedly connected to the bottom of the floating plate, and the telescopic end of the bottom of the electric push rod corresponds to the first sphere, and the end of the telescopic end of the bottom of the electric push rod is provided with an inclined surface. The guide rail, the floating plate, and the electric push rod are located in the liquid storage chamber.

[0011] A plurality of small holes are formed on the floating plate.

[0012] The liquid inlet and the liquid storage chamber are interconnected.

[0013] The liquid storage chamber is connected to the liquid discharge chamber through a connecting pipe, and scale lines are arranged inside the liquid storage chamber.

[0014] Technical effects and advantages of the utility model:

[0015] 1. The utility model is provided with an automatic liquid discharge component, in which a hydraulic cylinder in the automatic liquid discharge component is electrically connected to a power source, so that a movable plate is forced to move, thereby changing the air pressure in the liquid discharge chamber, and the second sphere is forced to move by increasing the air pressure, which helps to separate the second sphere from the connecting pipe, and facilitates the alkaline etching liquid to flow from the liquid storage chamber into the liquid discharge chamber. When the movable plate stops moving, the first relay and the second relay on the movable plate contact each other, and after the contacts of the two are fitted together, the solenoid valve is opened, which helps the alkaline etching liquid to be discharged from the liquid outlet, and avoids continuous manual operation. When the solenoid valve is opened, the air pressure inside the liquid discharge chamber is restored, and the second sphere is fitted with the connecting pipe under the elastic force of the second spring, and the second sphere restricts the alkaline etching liquid from flowing from the liquid storage chamber into the liquid discharge chamber again, thereby achieving the purpose of quantitative determination.

[0016] 2. The utility model is provided with a first liquid blocking component. The diameter of the second sphere in the first liquid blocking component is larger than the diameter of the connecting tube. Under the action of the second spring, the second sphere fits tightly with the connecting tube, which can prevent the alkaline etching liquid from flowing from the liquid storage chamber into the drainage chamber when not in use. At the same time, the second sphere stretches the second spring when subjected to force, so that the second sphere and the connecting tube are separated from each other, which helps the alkaline etching liquid to flow from the liquid storage chamber into the drainage chamber.

[0017] 3. The utility model is provided with a second liquid blocking component, in which a floating plate floats on the alkaline etching liquid. After the alkaline etching liquid is discharged through the automatic liquid draining component, the alkaline etching liquid gradually drops in the horizontal plane of the liquid storage chamber, prompting the floating plate to move downward. When the alkaline etching liquid drops to align with the corresponding scale line, if it is necessary to stop the discharge, the first sphere can be squeezed and moved by the electric push rod, so that the first sphere fits tightly with the connecting pipe to block the connecting pipe. At this time, the automatic liquid draining component cannot discharge the alkaline etching liquid either, which helps to control the usage volume of the alkaline etching liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the alkaline etching solution adding device of the utility model from the first perspective.

[0019] Figure 2 This is a schematic structural diagram of the alkaline etching solution adding device of the utility model from a second viewing angle.

[0020] Figure 3 The utility model is a schematic diagram of the internal structure of the alkaline etching solution adding device.

[0021] Figure 4 This is a schematic structural diagram of the second liquid blocking component of the utility model.

[0022] Figure 5 This is a schematic structural diagram of the first liquid blocking component of the utility model.

[0023] In the figure: 1. alkaline etching solution adding device body; 2. liquid inlet; 3. liquid outlet; 4. partition; 5. hydraulic cylinder; 6. moving plate; 7. first relay; 8. second relay; 9. guide rail; 10. floating plate; 11. electric push rod; 12. connecting pipe; 13. fixing frame; 14. first spring; 15. first sphere; 16. fixing rod; 17. second spring; 18. second sphere; 19. solenoid valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides Figure 1-Figure 5A circuit board alkaline etching liquid adding device is shown, comprising an alkaline etching liquid adding device body 1, a liquid inlet 2 is fixedly connected to one side of the alkaline etching liquid adding device body 1, a liquid outlet 3 is fixedly connected to the other side of the alkaline etching liquid adding device body 1, a solenoid valve 19 is fixedly connected inside the liquid outlet 3, a partition 4 is fixedly connected inside the alkaline etching liquid adding device body 1, the inside of the alkaline etching liquid adding device body 1 is divided into a liquid storage chamber and a liquid discharge chamber by the partition 4, the liquid inlet 2 and the liquid storage chamber are interconnected, and a scale line is arranged inside the liquid storage chamber;

[0026] The alkaline etching liquid adding device body 1 delivers the alkaline etching liquid through the liquid inlet 2 and then discharges the alkaline etching liquid through the liquid outlet 3 .

[0027] An automatic liquid discharge component is arranged inside the liquid discharge chamber, and the automatic liquid discharge component includes a hydraulic cylinder 5, and the hydraulic cylinder 5 is fixedly connected to the alkaline etching liquid adding device body 1, and the telescopic end of the hydraulic cylinder 5 is fixedly connected to the movable plate 6, and the top of the movable plate 6 is fixedly connected to the first relay 7, and the inner wall of the liquid discharge chamber is fixedly connected to the second relay 8, and the second relay 8 is electrically connected to the first relay 7, and a circular hole is opened on the partition plate 4, and the circular hole is located below the partition plate 4, and a connecting pipe 12 is fixedly connected in the circular hole, and the liquid storage chamber is mutually connected with the liquid discharge chamber through the connecting pipe 12, and a first liquid blocking component is arranged inside the connecting pipe 12, and the first liquid blocking component is located in the liquid discharge chamber;

[0028] The utility model is provided with an automatic liquid discharge component, wherein the hydraulic cylinder 5 in the automatic liquid discharge component is electrically connected to the power supply, so that the movable plate 6 is forced to move, thereby changing the air pressure in the liquid discharge chamber, and the second sphere 18 is forced to move by the increase of the air pressure, which helps to separate the second sphere 18 from the connecting pipe 12, and facilitates the alkaline etching liquid to flow from the liquid storage chamber into the liquid discharge chamber, when the movable plate 6 stops moving, the first relay 7 and the second relay 8 on the movable plate 6 contact each other, and after the contacts of the two are fitted together, the electromagnetic valve 19 is opened, which helps the alkaline etching liquid to be discharged from the liquid outlet 3, and avoids continuous manual operation, when the electromagnetic valve 19 is opened, the air pressure inside the liquid discharge chamber is restored, and the second sphere 18 is fitted with the connecting pipe 12 under the elastic force of the second spring 17, and the second sphere 18 restricts the alkaline etching liquid from flowing from the liquid storage chamber into the liquid discharge chamber again, thereby achieving the purpose of quantitative determination.

[0029] Further, the automatic drainage assembly helps to flow the alkaline etching liquid from the liquid storage chamber into the drainage chamber. Specifically, the hydraulic cylinder 5 is electrically connected to the power supply first, and the hydraulic cylinder 5 drives the movable plate 6 to move vertically upward. The first relay 7 moves in the direction of the movable plate 6. After the movable plate 6 moves, the movable plate 6 increases the air pressure in the drainage chamber. At this time, the second sphere 18 is forced to move, and the second spring 17 is forced to stretch. The second sphere 18 is separated from the connecting pipe 12 after moving. At this time, the alkaline etching liquid flows into the drainage chamber through the connecting pipe 12. When the movable plate 6 stops moving, the first relay 7 and the second relay 8 on the movable plate 6 contact each other. After the contacts of the two are fitted together, the solenoid valve 19 is energized and opened to discharge the alkaline etching liquid in the drainage chamber. When the solenoid valve 19 is opened, the air pressure in the drainage chamber is restored to the initial state, the second spring 17 is reset, and the second sphere 18 and the connecting pipe 12 are tightly fitted again to block the connecting pipe 12.

[0030] The first liquid blocking component includes a fixed rod 16, which is fixedly connected to the connecting pipe 12. A second spring 17 is fixedly connected to one side of the fixed rod 16. An end of the second spring 17 away from the fixed rod 16 is fixedly connected to a second sphere 18. The second sphere 18 fits tightly with the opening of the connecting pipe 12.

[0031] The utility model is provided with a first liquid blocking component. The diameter of the second sphere 18 in the first liquid blocking component is larger than the diameter of the connecting tube 12. Under the action of the second spring 17, the second sphere 18 is tightly fitted with the connecting tube 12, which can prevent the alkaline etching liquid from flowing from the liquid storage chamber into the liquid discharge chamber when not in use. At the same time, the second sphere 18 stretches the second spring 17 when subjected to force, so that the second sphere 18 and the connecting tube 12 are separated from each other, which helps the alkaline etching liquid to flow from the liquid storage chamber into the liquid discharge chamber.

[0032] A second liquid blocking component is provided at one end of the connecting tube 12 away from the second sphere 18, and the second liquid blocking component is located in the liquid storage chamber. The second liquid blocking component includes a fixing frame 13, which is fixedly connected to the connecting tube 12, and the fixing frame 13 is concave in shape. A first spring 14 is fixedly provided on the inner wall of the fixing frame 13 away from the partition 4, and the end of the first spring 14 is fixedly connected to the first sphere 15. A guide rail 9 is provided on one side of the partition 4, and the guide rail 9 is fixedly connected to the connecting tube 12. A quantitative component is provided inside the guide rail 9, and the quantitative component includes a floating plate 10, and a plurality of small holes are opened on the floating plate 10. The floating plate 10 is slidably connected to the guide rail 9. An electric push rod 11 is fixedly connected to the bottom of the floating plate 10, and the telescopic end of the bottom of the electric push rod 11 corresponds to the first sphere 15, and the telescopic end of the bottom of the electric push rod 11 is provided with an inclined surface. The guide rail 9, the floating plate 10, and the electric push rod 11 are located in the liquid storage chamber.

[0033] The utility model is provided with a second liquid blocking component, in which a floating plate 10 floats on the alkaline etching liquid. When the alkaline etching liquid is discharged through the automatic liquid draining component, the alkaline etching liquid gradually drops in the horizontal plane of the liquid storage chamber, prompting the floating plate 10 to move downward. When the alkaline etching liquid drops to be aligned with the corresponding scale line, if it is necessary to stop the discharge, the electric push rod 11 can be used to squeeze the first sphere 15 to move it, so that the first sphere 15 is tightly fitted with the connecting pipe 12 to block the connecting pipe 12. At this time, the automatic liquid draining component cannot discharge the alkaline etching liquid either, which helps to control the usage volume of the alkaline etching liquid.

[0034] Furthermore, after the alkaline etching liquid flows from the liquid storage chamber into the liquid discharge chamber, the horizontal plane of the alkaline etching liquid gradually moves downward, so that the floating plate 10 moves downward along the slide groove of the guide rail 9 following the alkaline etching liquid, and the user can intuitively monitor the distance between the alkaline etching liquid and the scale line through the floating plate 10. When the alkaline etching liquid drops to align with the corresponding scale line and needs to stop discharging the alkaline etching liquid, the electric push rod 11 is electrically connected to the power supply, and the telescopic end of the electric push rod 11 squeezes the first sphere 15 to move, so that the first sphere 15 fits tightly with the connecting tube 12, which helps the first sphere 15 to block the connecting tube 12.

Claims

1. A circuit board alkaline etching liquid adding device, comprising an alkaline etching liquid adding device body (1), characterized in that: A liquid inlet (2) is fixedly connected to one side of the alkaline etching liquid adding device body (1), a liquid outlet (3) is fixedly connected to the other side of the alkaline etching liquid adding device body (1), a solenoid valve (19) is fixedly connected inside the liquid outlet (3), a partition (4) is fixedly connected inside the alkaline etching liquid adding device body (1), and the inside of the alkaline etching liquid adding device body (1) is divided into a liquid storage chamber and a liquid discharge chamber by the partition (4); An automatic liquid discharge component is arranged inside the liquid discharge chamber, and the automatic liquid discharge component comprises a hydraulic cylinder (5), the hydraulic cylinder (5) is fixedly connected to the alkaline etching liquid adding device body (1), the telescopic end of the hydraulic cylinder (5) is fixedly connected to a movable plate (6), the top of the movable plate (6) is fixedly connected to a first relay (7), a second relay (8) is fixedly connected to the inner wall of the liquid discharge chamber, and the second relay (8) is electrically connected to the first relay (7), a circular hole is opened on the partition (4), the circular hole is located below the partition (4), a connecting pipe (12) is fixedly connected in the circular hole, a first liquid blocking component is arranged inside the connecting pipe (12), and the first liquid blocking component is located in the liquid discharge chamber; The first liquid blocking component comprises a fixed rod (16), the fixed rod (16) is fixedly connected in the connecting pipe (12), a second spring (17) is fixedly connected to one side of the fixed rod (16), a second sphere (18) is fixedly connected to one end of the second spring (17) away from the fixed rod (16), and the second sphere (18) is tightly fitted with the opening of the connecting pipe (12).

2. A circuit board alkaline etching solution adding device according to claim 1, characterized in that: A second liquid blocking component is arranged at one end of the connecting tube (12) away from the second sphere (18), the second liquid blocking component is located in the liquid storage chamber, the second liquid blocking component comprises a fixing frame (13), the fixing frame (13) is fixedly connected to the connecting tube (12), the fixing frame (13) is in a concave shape, a first spring (14) is fixedly arranged on the inner wall of the fixing frame (13) away from the partition (4), and the end of the first spring (14) is fixedly connected to the first sphere (15).

3. A circuit board alkaline etching solution adding device according to claim 2, characterized in that: A guide rail (9) is provided on one side of the partition (4), and the guide rail (9) is fixedly connected to the connecting pipe (12). A quantitative component is provided inside the guide rail (9), and the quantitative component includes a floating plate (10), and the floating plate (10) is slidably connected to the guide rail (9). An electric push rod (11) is fixedly connected to the bottom of the floating plate (10), and the telescopic end of the bottom of the electric push rod (11) corresponds to the first sphere (15), and the end of the telescopic end of the bottom of the electric push rod (11) is provided with an inclined surface. The guide rail (9), the floating plate (10), and the electric push rod (11) are located in the liquid storage chamber.

4. A circuit board alkaline etching solution adding device according to claim 3, characterized in that: The floating plate (10) is provided with a plurality of small holes.

5. A circuit board alkaline etching solution adding device according to claim 1, characterized in that: The liquid inlet (2) and the liquid storage chamber are interconnected.

6. A circuit board alkaline etching solution adding device according to claim 1, characterized in that: The liquid storage chamber is connected to the liquid discharge chamber via a connecting pipe (12), and scale lines are arranged inside the liquid storage chamber.

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