Circuit board immersion cleaning device

Abstract

The utility model provides a circuit board immersion cleaning device which comprises an immersion cleaning machine, the inner side of the immersion cleaning machine is fixedly connected with an immersion cylinder, the bottom of the immersion cleaning machine is fixedly connected with a supporting seat, and the inner side of the immersion cylinder is fixedly connected with an immersion cleaning table; according to the circuit board cleaning device, cleaning liquid needing to be soaked is circulated along the liquid outlet pipe and the backflow pipe, the continuously flowing cleaning liquid generated after circulation forms shearing force, the cleaning effect on a circuit board is improved, meanwhile, the uniformity of the concentration of the cleaning liquid is improved through the flowing liquid, and the soaking effect is improved; meanwhile, the heating cylinder is attached to the liquid outlet pipe, the cleaning liquid flowing in the liquid outlet pipe is continuously preheated, and the immersion cleaning effect on the circuit board is improved by increasing the temperature of the immersion liquid in the immersion cylinder; and the temperature of the flushing liquid is increased, and the circuit board after immersion cleaning is flushed, so that the temperature difference influence caused by directly flushing the circuit board with heat by using liquid with relatively low temperature is avoided, and the flushing effect is improved.

Description

A circuit board immersion washing device Technical Field

[0001] This utility model relates to the field of circuit boards, and in particular to a circuit board immersion washing device. Background Technology

[0002] Circuit boards serve as the support for electronic components and the carrier for electrical connections. By printing conductive lines and mounting holes on an insulating substrate, electronic components are mechanically fixed and electrically interconnected. Immersion cleaning is a key cleaning step in the manufacturing or repair process of circuit boards, used to remove residual flux such as rosin, solder paste, oil, oxides, etc. after soldering.

[0003] In the prior art, patent application document "CN211726713U" discloses a "circuit board immersion washing device"; it includes an immersion washing tank, a storage tank, and a speed-regulating motor. A return pipe is connected between the water outlet at the bottom of the immersion washing tank and the return port at the top of the storage tank. A valve is installed on the return pipe. A cleaning pump is installed at the bottom of the inner cavity of the storage tank. A tank cover is hinged to the top of the immersion washing tank. A spray frame is installed at the bottom of the tank cover. A hose is connected between the water inlet of the spray frame and the water outlet of the cleaning pump. A placement cylinder is connected between two facing plates. The placement cylinder is made of a grid mesh. A material handling door is hinged to the surface of the placement cylinder. Connecting plates are longitudinally arranged on both sides of the inner cavity of the immersion washing tank. A filter screen is connected between the two connecting plates. A drain door is hinged to the left side wall of the immersion washing tank. This novel solution greatly improves the immersion washing efficiency and can filter the cleaning liquid to ensure the immersion washing effect.

[0004] The aforementioned "circuit board immersion cleaning device" still has some drawbacks. For example, in the process of immersion cleaning existing circuit boards, the cleaning solution is often directly added to the immersion tank for cleaning. At this time, the temperature of the cleaning solution is related to the ambient temperature. If the temperature is low, direct immersion cleaning will significantly reduce the chemical reaction rate between the cleaning agent and the contaminants, thus reducing the cleaning efficiency.

[0005] To address these issues, a circuit board immersion cleaning device is proposed here. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a circuit board immersion washing device.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a circuit board immersion washing device, including an immersion washing machine, an immersion cylinder fixedly connected to the inner side of the immersion washing machine, a support base fixedly connected to the bottom of the immersion washing machine, an immersion washing platform fixedly connected to the inner side of the immersion cylinder, a cleaning liquid tank fixedly connected to the top of the immersion washing machine, a liquid discharge pump fixedly connected to one side of the cleaning liquid tank, a liquid discharge pipe provided on one side of the liquid discharge pump, one end of the liquid discharge pipe fixedly connected to one side of the immersion cylinder, a drain pipe fixedly connected to one side of the immersion cylinder, a filter box fixedly connected to one side of the drain pipe, a return pump fixedly connected to one side of the filter box, and a return pipe provided on one side of the return pump.

[0008] Preferably, a circulating liquid tank is fixedly connected to one side of the cleaning liquid tank, a liquid guide pump is fixedly connected to one side of the circulating liquid tank, a liquid guide pipe is provided on one side of the liquid guide pump, and a high-pressure nozzle is fixedly connected to one end of the liquid guide pipe.

[0009] Preferably, a filter screen is fixedly connected to the inner side of the filter box, and the filter screen is square.

[0010] Preferably, a heating box is fixedly connected to one side of the soaking machine, a storage battery is fixedly connected to the top of the heating box, a heating tube is fixedly connected to one side of the storage battery, a heat-conducting baffle is provided inside the heating box, a first heat-conducting sheet is fixedly connected to one side of the heat-conducting baffle, and a heating cylinder is fixedly connected to one side of the first heat-conducting sheet.

[0011] Preferably, a second heat-conducting sheet is fixedly connected to the other side of the heat-conducting baffle. The surface of the second heat-conducting sheet and the surface of the first heat-conducting sheet are both provided with protective boxes. One side of each of the two protective boxes is fixedly connected to both sides of the heating box, and both sides of the two protective boxes are provided with connecting holes.

[0012] Preferably, a support frame is fixedly connected to the inner side of the heating box, and the top of the support frame is fixedly connected to the bottom of the heat-conducting baffle.

[0013] Preferably, a circulating pump is fixedly connected to one side of the circulating liquid tank, and a heating pipe is provided on one side of the circulating pump.

[0014] Compared with the prior art, the beneficial effects of this utility model include:

[0015] The used cleaning solution in the filter box is circulated back to the inside of the cleaning solution tank by the return pump. The cleaning solution is circulated along the outlet pipe and the return pipe. The continuous flow of cleaning solution after circulation creates shear force, which improves the cleaning effect on the circuit board. At the same time, the flow of liquid improves the uniformity of the cleaning solution concentration and improves the soaking effect.

[0016] By using the heating cylinder to adhere to the outlet pipe, the cleaning fluid flowing in the outlet pipe is continuously preheated. The first heat-conducting sheet and the heating cylinder, which have a high temperature, are protected by a protective box, which improves the protection of the surrounding operators and reduces the possibility of operators being burned by high temperature when touching them. By increasing the temperature of the soaking liquid in the soaking cylinder, the effect of immersion cleaning of the circuit board is improved.

[0017] Multiple high-pressure nozzles spray the rinsing liquid from the guide tube along the top of the immersion platform to rinse the circuit board after immersion. A circulation pump is started, driving the rinsing liquid in the circulation tank to circulate along the inside of the heating tube. The surface of the heating tube is in contact with the second heat-conducting plate, which continuously heats the heating tube, increasing the temperature of the rinsing liquid in the circulation tank. By increasing the temperature of the rinsing liquid and rinsing the immersed circuit board, the temperature difference caused by directly rinsing the heated circuit board with a lower temperature liquid is avoided, thus improving the rinsing effect. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 schematically shows a structural diagram of a heating tube according to one embodiment of the present invention;

[0020] Figure 2 schematically shows a structural diagram of a heating box according to one embodiment of the present invention;

[0021] Figure 3 schematically shows a structural diagram of a storage battery according to one embodiment of the present invention;

[0022] Figure 4 schematically shows a structural diagram of an outlet pipe according to one embodiment of the present invention;

[0023] Figure 5 schematically shows a structural diagram of a heat-conducting baffle according to one embodiment of the present invention;

[0024] Figure 6 schematically shows a structural diagram of a reflux pipe according to one embodiment of the present invention.

[0025] Numbering on the map:

[0026] 1. Immersion washing machine; 2. Immersion cylinder; 3. Support base; 4. Immersion table; 501. Cleaning solution tank; 502. Discharge pump; 503. Discharge pipe; 601. Heating chamber; 602. Battery; 603. Heating tube; 604. Heat-conducting baffle; 605. Support frame; 606. First heat-conducting plate; 607. Heating cylinder; 608. Protective box; 609. Connecting hole; 701. Circulating liquid tank; 702. Liquid pump; 703. Liquid pipe; 704. High-pressure nozzle; 801. Heating tube; 802. Circulating pump; 803. Second heat-conducting plate; 901. Drain pipe; 902. Filter box; 903. Filter screen; 904. Return pump; 905. Return pipe. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] According to one embodiment of the present invention, as shown in Figures 1 to 6, a circuit board immersion washing device includes an immersion washing machine 1, an immersion cylinder 2 fixedly connected to the inner side of the immersion washing machine 1, a support base 3 fixedly connected to the bottom of the immersion washing machine 1, an immersion washing table 4 fixedly connected to the inner side of the immersion cylinder 2, a cleaning liquid tank 501 fixedly connected to the top of the immersion washing machine 1, a liquid discharge pump 502 fixedly connected to one side of the cleaning liquid tank 501, a liquid discharge pipe 503 provided on one side of the liquid discharge pump 502, one end of the liquid discharge pipe 503 fixedly connected to one side of the immersion cylinder 2, a drain pipe 901 fixedly connected to one side of the immersion cylinder 2, a filter box 902 fixedly connected to one side of the drain pipe 901, a return pump 904 fixedly connected to one side of the filter box 902, and a return pipe 905 provided on one side of the return pump 904.

[0029] It should be noted that the used cleaning solution in the filter box 902 is circulated back to the cleaning solution tank 501 by the return pump 904 along the return pipe 905, thus forming a circulation of the cleaning solution. By circulating the cleaning solution to be soaked along the outlet pipe 503 and the return pipe 905, the continuously flowing cleaning solution generates shear force, which improves the cleaning effect on the circuit board. At the same time, the flowing liquid improves the uniformity of the cleaning solution concentration and enhances the soaking effect.

[0030] In this embodiment, a circulating liquid tank 701 is fixedly connected to one side of the cleaning liquid tank 501, a liquid guide pump 702 is fixedly connected to one side of the circulating liquid tank 701, a liquid guide pipe 703 is provided on one side of the liquid guide pump 702, and a high-pressure nozzle 704 is fixedly connected to one end of the liquid guide pipe 703.

[0031] It should be noted that the pure water rinsing liquid in the circulating liquid tank 701 is driven by the liquid pump 702 to flow along the liquid guide pipe 703 to one side of the high pressure nozzle 704. Multiple high pressure nozzles 704 spray the rinsing liquid in the liquid guide pipe 703 along the top of the immersion table 4 to rinse the circuit board on the surface of the immersion table 4 after immersion.

[0032] In this embodiment, a filter screen 903 is fixedly connected to the inner side of the filter box 902, and the filter screen 903 is square.

[0033] It should be noted that the cleaning fluid is blocked by the filter screen 903 when it passes through the filter box 902, and the filter screen 903 is used to block the impurities and particles contained in the cleaning fluid after use.

[0034] In this embodiment, a heating box 601 is fixedly connected to one side of the soaking machine 1, a storage battery 602 is fixedly connected to the top of the heating box 601, a heating tube 603 is fixedly connected to one side of the storage battery 602, a heat-conducting baffle 604 is provided inside the heating box 601, a first heat-conducting sheet 606 is fixedly connected to one side of the heat-conducting baffle 604, and a heating cylinder 607 is fixedly connected to one side of the first heat-conducting sheet 606.

[0035] It should be noted that the continuously rising temperature of the heat-conducting baffle 604 will be conducted to the surface of the heating cylinder 607 on one side of the first heat-conducting plate 606. By utilizing the contact between the heating cylinder 607 and the liquid outlet pipe 503, the cleaning fluid flowing in the liquid outlet pipe 503 will be continuously preheated.

[0036] In this embodiment, a second heat-conducting sheet 803 is fixedly connected to the other side of the heat-conducting baffle 604. A protective box 608 is provided on the surface of the second heat-conducting sheet 803 and the surface of the first heat-conducting sheet 606. One side of each of the two protective boxes 608 is fixedly connected to both sides of the heating box 601, and a connecting hole 609 is provided on both sides of each of the two protective boxes 608.

[0037] It should be noted that the first heat-conducting plate 606 and the heating cylinder 607, which have higher temperatures, are protected by the protective box 608, which improves the protection of the surrounding operators and reduces the possibility of operators being burned by high temperature when touching them. By increasing the temperature of the soaking solution in the soaking cylinder 2, the effect of immersion cleaning of the circuit board is improved.

[0038] In this embodiment, a support frame 605 is fixedly connected to the inner side of the heating box 601, and the top of the support frame 605 is fixedly connected to the bottom of the heat-conducting baffle 604.

[0039] It should be noted that the heating tube 603 is started by the battery 602. The heating tube 603 continuously heats up along the inside of the heating box 601, and conducts the heat to the surface of the heat-conducting baffle 604. The heat-conducting baffle 604 is stably supported on the inside of the heating box 601 by the support frame 605.

[0040] In this embodiment, a circulating pump 802 is fixedly connected to one side of the circulating liquid tank 701, and a heating pipe 801 is provided on one side of the circulating pump 802.

[0041] It should be noted that when the circulation pump 802 is started, the flushing liquid in the circulation tank 701 is driven to circulate along the inside of the heating tube 801. The surface of the heating tube 801 is in contact with the second heat-conducting plate 803, and the second heat-conducting plate 803 continuously heats the heating tube 801, thereby increasing the temperature of the flushing liquid in the circulation tank 701.

[0042] The specific usage and function of this embodiment are as follows: First, the liquid outlet pump 502 is started, and the liquid in the cleaning liquid tank 501 is drawn out along the liquid outlet pipe 503 by the liquid outlet pump 502. After the liquid is drawn out along the liquid outlet pipe 503, it will flow into the interior of the soaking tank 2. After the cleaning liquid fills the interior of the soaking tank 2, it will soak and clean the circuit board placed on the surface of the soaking table 4. At the same time, the cleaning liquid in the soaking tank 2 will flow into the interior of the filter box 902 through the drain pipe 901. When the cleaning liquid passes through the filter box 902, the filter screen 903 will filter the contents of the cleaning liquid. Some impurities and particulate matter are blocked. The return pump 904 is started to use the used cleaning solution in the filter box 902 to flow back to the interior of the cleaning solution tank 501 along the return pipe 905, forming a circulation of the cleaning solution. By circulating the cleaning solution that needs to be soaked along the outlet pipe 503 and the return pipe 905, the continuously flowing cleaning solution generated after circulation will generate shear force and rinse the surface of the circuit board, improving the cleaning effect of the circuit board. At the same time, the flow of liquid improves the uniformity of the cleaning solution concentration and improves the soaking effect.

[0043] Simultaneously, the battery 602 drives the heating tube 603 to start. The heating tube 603 continuously heats up along the inside of the heating box 601, which will conduct heat to the surface of the heat-conducting baffle 604. The heat-conducting baffle 604 is stably supported on the inside of the heating box 601 by the support frame 605. Through the connection of the first heat-conducting sheet 606, the continuously rising temperature of the heat-conducting baffle 604 will be conducted to the surface of the heating cylinder 607 on one side of the first heat-conducting sheet 606. By using the heating cylinder 607 to adhere to the liquid outlet pipe 503, the cleaning liquid flowing in the liquid outlet pipe 503 is continuously preheated. The first heat-conducting sheet 606 and the heating cylinder 607, which have a high temperature, are protected by the protective box 608, which improves the protection of the surrounding operators and reduces the possibility of operators being burned by high temperature when touching them. By increasing the temperature of the soaking liquid in the soaking tank 2, the effect of immersion cleaning of the circuit board is improved.

[0044] Simultaneously, after the soaking is completed, the immersion liquid in the soaking tank 2 will gradually decrease after the outlet pump 502 is turned off, and will flow back into the filter box 902 along the drain pipe 901. After the circuit board on the surface of the immersion table 4 loses contact with the cleaning liquid, the liquid guide pump 702 is started first. The liquid guide pump 702 drives the rinsing liquid in the circulating liquid tank 701 to flow along the liquid guide pipe 703 to one side of the high-pressure nozzle 704. Multiple high-pressure nozzles 704 spray the rinsing liquid in the liquid guide pipe 703 along the top of the immersion table 4 to rinse the circuit board on the surface of the immersion table 4 after immersion. At the same time, the heating pipe 603 heats the heat-conducting baffle 604. At the same time, the heat-conducting baffle 604 will synchronously conduct heat to the second heat-conducting plate 803. The circulation pump 802 is started, driving the rinsing liquid in the circulating liquid tank 701 to circulate along the inside of the heating tube 801. The surface of the heating tube 801 is in contact with the second heat-conducting plate 803, and the second heat-conducting plate 803 continuously heats the heating tube 801, increasing the temperature of the rinsing liquid in the circulating liquid tank 701. By increasing the temperature of the rinsing liquid and rinsing the immersed circuit board, the temperature difference caused by directly rinsing the hot circuit board with a lower temperature liquid is avoided, thus improving the rinsing effect.

[0045] The contents not described in detail in this specification are existing technologies known to those skilled in the art and are not key to this utility model, therefore they will not be elaborated upon.

[0046] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A circuit board immersion washing apparatus, comprising an immersion washing machine (1), characterized in that: The soaking machine (1) is fixedly connected to the inner side of a soaking cylinder (2), the bottom of the soaking machine (1) is fixedly connected to a support base (3), the inner side of the soaking cylinder (2) is fixedly connected to a soaking platform (4), the top of the soaking machine (1) is fixedly connected to a cleaning liquid tank (501), a liquid outlet pump (502) is fixedly connected to one side of the cleaning liquid tank (501), a liquid outlet pipe (503) is provided on one side of the liquid outlet pump (502), one end of the liquid outlet pipe (503) is fixedly connected to one side of the soaking cylinder (2), a drain pipe (901) is fixedly connected to one side of the soaking cylinder (2), a filter box (902) is fixedly connected to one side of the drain pipe (901), a return pump (904) is fixedly connected to one side of the filter box (902), and a return pipe (905) is provided on one side of the return pump (904).

2. The circuit board immersion washing apparatus according to claim 1, characterized in that: A circulating liquid tank (701) is fixedly connected to one side of the cleaning liquid tank (501), a liquid guide pump (702) is fixedly connected to one side of the circulating liquid tank (701), a liquid guide pipe (703) is provided on one side of the liquid guide pump (702), and a high-pressure nozzle (704) is fixedly connected to one end of the liquid guide pipe (703).

3. The circuit board immersion washing apparatus according to claim 2, characterized in that: A filter screen (903) is fixedly connected to the inside of the filter box (902), and the filter screen (903) is square.

4. The circuit board immersion washing apparatus according to claim 3, characterized in that: A heating box (601) is fixedly connected to one side of the soaking machine (1), a storage battery (602) is fixedly connected to the top of the heating box (601), a heating tube (603) is fixedly connected to one side of the storage battery (602), a heat-conducting baffle (604) is provided inside the heating box (601), a first heat-conducting plate (606) is fixedly connected to one side of the heat-conducting baffle (604), and a heating cylinder (607) is fixedly connected to one side of the first heat-conducting plate (606).

5. The circuit board immersion washing apparatus according to claim 4, characterized in that: A second heat-conducting plate (803) is fixedly connected to the other side of the heat-conducting baffle (604). The surface of the second heat-conducting plate (803) and the surface of the first heat-conducting plate (606) are both provided with protective boxes (608). One side of each of the two protective boxes (608) is fixedly connected to both sides of the heating box (601). Both sides of each of the two protective boxes (608) are provided with connecting holes (609).

6. The circuit board immersion washing apparatus according to claim 5, characterized in that: The heating box (601) is fixedly connected to a support frame (605) on its inner side, and the top of the support frame (605) is fixedly connected to the bottom of the heat-conducting baffle (604).

7. The circuit board immersion washing apparatus according to claim 6, characterized in that: A circulating pump (802) is fixedly connected to one side of the circulating liquid tank (701), and a heating pipe (801) is provided on one side of the circulating pump (802).

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