Liquid medicine adding device for circuit board surface roughness processing

Abstract

The utility model discloses a circuit board surface roughness processing liquid medicine adding device which comprises a main tank, a temporary storage tank is arranged on one side of the main tank, a conveying pump is arranged between the temporary storage tank and the main tank, the input end of the conveying pump is connected with the temporary storage tank through a conveying pipe, the output end of the conveying pump is connected with the main tank through a conveying pipe, and the temporary storage tank comprises an outer shell. An inner container is arranged in the outer shell, a heating cavity is formed between the outer shell and the inner container, an electric heating disc is arranged in the heating cavity, and the conveying pump and the electric heating disc are both in signal connection with the PLC. According to the utility model, the temporary storage tank capable of preheating the liquid medicine is arranged, so that the temperature of the liquid medicine in the main tank is not influenced when the liquid medicine is added into the main tank, and the production efficiency is effectively improved; the stirring paddle is driven by the motor to stir liquid medicine in the temporary storage tank, so that the heating uniformity of the liquid medicine is ensured, and the influence on the temperature of the liquid medicine in the main tank when the liquid medicine is added into the main tank is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board processing, and particularly relates to a liquid medicine adding device for processing the surface roughness of a circuit board. Background Art

[0002] During the PCB production process, to enhance the bonding strength between subsequent materials, such as dry film or ink with copper or ABF materials, chemicals are used to etch the smooth copper or ABF material on the PCB surface. This etching creates pits with varying heights, also known as roughness, on the surface of the copper or ABF material.

[0003] The strength of the bond between different materials depends on the roughness of the PCB surface. Controlling this roughness depends on the etching ability of the solution, with key factors including solution concentration and activity. The temperature of the solution is a key factor affecting its activity (the temperature in the main tank during production is 27±2°C), and it is also a production parameter that is difficult to control with current equipment.

[0004] For example, as production progresses, the potion in the main tank will be consumed and needs to be added to the main tank. When the set number of pieces is produced, the potion needs to be replaced. However, the potion is currently added directly to the main tank, which causes the temperature of the potion in the main tank to drop. Therefore, production needs to wait until the potion temperature reaches the requirement before it can proceed, which seriously affects production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a device for adding liquid to process the surface roughness of a circuit board, so as to solve the problems raised in the above-mentioned background technology. The device provided by this utility model has the characteristics of not affecting the temperature of the liquid in the main tank after adding liquid, thereby improving production efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for adding liquid medicine for surface roughness processing of circuit boards, comprising a main tank, a temporary storage tank being provided on one side of the main tank, a delivery pump being provided between the temporary storage tank and the main tank, the input end of the delivery pump being connected to the temporary storage tank through a delivery pipe, and the output end of the delivery pump being connected to the main tank through a delivery pipe, the temporary storage tank comprising an outer shell, an inner liner being provided inside the outer shell, a heating chamber being provided between the outer shell and the inner liner, an electric heating plate being provided inside the heating chamber, and the delivery pump and the electric heating plate being both connected to the PLC controller signal.

[0007] In order to ensure the uniformity of the heating of the medicine and reduce the impact on the temperature of the medicine inside the main tank when adding medicine into the main tank, a cover plate is further provided on the top of the outer shell, and a medicine adding port is provided on the cover plate. A motor is installed above the cover plate, and the output end of the motor is connected to a stirring paddle located inside the inner tank. The motor is connected to the PLC controller signal.

[0008] In order to achieve constant temperature heating of the medicine, a thermometer is further installed inside the heating chamber, and the thermometer is connected to the PLC controller signal.

[0009] In order to make the medicine heated more evenly, a liquid medium is further provided inside the heating chamber, and a liquid medium adding port is provided above the heating chamber.

[0010] In order to monitor the liquid level of the liquid medium, a liquid level gauge communicating with the heating chamber is further installed on the outside of the outer shell.

[0011] In order to reduce heat loss and thus lower energy consumption, the exterior of the outer shell is further coated with a thermal insulation layer.

[0012] In order to control the on-off of the delivery pipe, a first control valve is further installed on the delivery pipe connected to the temporary storage tank.

[0013] In order to prevent the temperature from being affected by the residual medicine in the delivery pipe when the medicine is added to the main tank again, a vent pipe is further installed on the delivery pipe connected to the temporary storage tank, and a second control valve is installed on the vent pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is provided with a temporary storage tank for preheating the medicine, so that when adding medicine to the main tank, the temperature of the medicine in the main tank will not be affected, which effectively improves the production efficiency;

[0016] 2. The utility model uses a motor to drive a stirring paddle to stir the medicine in the temporary storage tank, thereby ensuring the uniformity of the heating of the medicine and reducing the impact of the medicine temperature in the main tank when adding medicine to the main tank;

[0017] 3. The utility model adopts water bath heating to heat the inner tank, thereby heating the medicine in the temporary storage tank and making the medicine heated more evenly;

[0018] 4. In the present invention, when the liquid level of the medicine in the main tank reaches the set value, the first control valve is closed and the second control valve is opened. The delivery pump allows all the remaining medicine in the delivery pipe to enter the main tank, avoiding the influence of the temperature on the residual medicine in the delivery pipe when adding medicine to the main tank again. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the temporary storage tank of the utility model;

[0021] In the figure: 1. Main tank; 2. Delivery pump; 3. Delivery pipe; 4. Vent pipe; 5. First control valve; 6. Temporary storage tank; 61. Inner tank; 62. Heating chamber; 63. Electric heating plate; 64. Stirring paddle; 65. Insulation layer; 66. Liquid level gauge; 67. Liquid medium addition port; 68. Cover plate; 69. Motor; 610. Chemical solution addition port; 611. Thermometer; 612. Outer shell; 7. Second control valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figure 1-2 The utility model provides the following technical solutions: a device for adding liquid medicine for surface roughness processing of a circuit board, comprising a main tank 1, a temporary storage tank 6 being provided on one side of the main tank 1, a delivery pump 2 being provided between the temporary storage tank 6 and the main tank 1, the input end of the delivery pump 2 being connected to the temporary storage tank 6 through a delivery pipe 3, the output end of the delivery pump 2 being connected to the main tank 1 through a delivery pipe 3, the temporary storage tank 6 comprising an outer shell 612, an inner liner 61 being provided inside the outer shell 612, a heating chamber 62 being provided between the outer shell 612 and the inner liner 61, an electric heating plate 63 being provided inside the heating chamber 62, the delivery pump 2 and the electric heating plate 63 being both connected to the PLC controller signal, and structures such as the inner liner 61 in the utility model that need to come into contact with the liquid medicine are all made of polypropylene.

[0025] By adopting the above technical solution, the utility model is provided with a temporary storage tank 6 for preheating the medicine, so that when the medicine is added to the main tank 1, the temperature of the medicine in the main tank 1 will not be affected, thereby effectively improving production efficiency.

[0026] Specifically, a thermometer 611 is installed inside the heating chamber 62, and the thermometer 611 is connected to the PLC controller signal.

[0027] By adopting the above technical solution, constant temperature heating of the medicine solution is achieved.

[0028] Example 2

[0029] The difference between this embodiment and embodiment 1 is that: specifically, a cover plate 68 is provided above the outer shell 612, a medicine addition port 610 is provided on the cover plate 68, a motor 69 is installed above the cover plate 68, the output end of the motor 69 is connected to the stirring paddle 64 located inside the inner tank 61, and the motor 69 is connected to the PLC controller signal.

[0030] By adopting the above technical solution, the motor 69 drives the stirring paddle 64 to stir the medicine in the temporary storage tank 6, thereby ensuring the uniformity of the heating of the medicine and reducing the impact of the medicine temperature in the main tank 1 when adding medicine to the main tank 1.

[0031] Example 3

[0032] The present embodiment differs from the first embodiment in that: specifically, a liquid medium is provided inside the heating chamber 62 , and the liquid medium is distilled water. A liquid medium adding port 67 is provided above the heating chamber 62 .

[0033] By adopting the above technical solution, the inner container 61 is heated by water bath heating, thereby heating the liquid medicine in the temporary storage tank 6 and making the liquid medicine heated more evenly.

[0034] Specifically, a liquid level gauge 66 communicating with the heating chamber 62 is installed outside the outer shell 612 .

[0035] By adopting the above technical solution, the liquid level of the liquid medium can be monitored.

[0036] Specifically, the exterior of the outer shell 612 is covered with a heat-insulating layer 65 .

[0037] By adopting the above technical solution, heat loss is reduced, thereby reducing energy consumption.

[0038] Example 4

[0039] The difference between this embodiment and the first embodiment is that, specifically, a first control valve 5 is installed on the delivery pipe 3 connected to the temporary storage tank 6 .

[0040] By adopting the above technical solution, the on-off of the delivery pipe 3 is controlled.

[0041] Specifically, a vent pipe 4 is installed on the delivery pipe 3 connected to the temporary storage tank 6 , and a second control valve 7 is installed on the vent pipe 4 .

[0042] By adopting the above technical solution, when the liquid level of the medicine in the main tank 1 reaches the set value, the first control valve 5 is closed and the second control valve 7 is opened. Under the action of the delivery pump 2, all the remaining medicine in the delivery pipe 3 enters the main tank 1, avoiding the influence of the temperature caused by the residual medicine in the delivery pipe 3 when the medicine is added to the main tank 1 again.

[0043] In summary, the utility model is provided with a temporary storage tank 6 for preheating the medicine, so that when the medicine is added to the main tank 1, the temperature of the medicine in the main tank 1 will not be affected, thereby effectively improving the production efficiency; the utility model drives the stirring paddle 64 through the motor 69 to stir the medicine in the temporary storage tank 6, thereby ensuring the uniformity of the heating of the medicine and reducing the impact of the temperature of the medicine when adding medicine to the main tank 1; the utility model adopts a water bath heating method to heat the inner tank 61, thereby realizing the heating of the medicine in the temporary storage tank 6, making the medicine heated more evenly; when the liquid level of the medicine in the main tank 1 reaches the set value, the first control valve 5 is closed and the second control valve 7 is opened. Under the action of the delivery pump 2, all the remaining medicine in the delivery pipe 3 enters the main tank 1, avoiding the influence of the residual medicine in the delivery pipe 3 on the temperature when the medicine is added to the main tank 1 again.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for adding liquid medicine for processing the surface roughness of a circuit board, comprising a main tank, characterized in that: A temporary storage tank is provided on one side of the main tank, and a delivery pump is provided between the temporary storage tank and the main tank. The input end of the delivery pump is connected to the temporary storage tank through a delivery pipe, and the output end of the delivery pump is connected to the main tank through a delivery pipe. The temporary storage tank includes an outer shell, an inner tank is provided inside the outer shell, a heating chamber is provided between the outer shell and the inner tank, and an electric heating plate is provided inside the heating chamber. The delivery pump and the electric heating plate are both connected to the PLC controller signal.

2. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 1, characterized in that: A cover plate is provided above the outer shell, and a medicine adding port is provided on the cover plate. A motor is installed above the cover plate, and the output end of the motor is connected to a stirring paddle located inside the inner tank. The motor is connected to a PLC controller signal.

3. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 1, characterized in that: A thermometer is installed inside the heating chamber, and the thermometer is connected to the PLC controller signal.

4. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 1, characterized in that: A liquid medium is provided inside the heating chamber, and a liquid medium adding port is provided above the heating chamber.

5. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 4, characterized in that: A liquid level gauge communicating with the heating chamber is installed on the outside of the outer shell.

6. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 1, characterized in that: The exterior of the outer shell is coated with a heat-insulating layer.

7. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 1, characterized in that: A first control valve is installed on the delivery pipe connected to the temporary storage tank.

8. The device for adding liquid medicine for processing the surface roughness of a circuit board according to claim 7, characterized in that: A vent pipe is installed on the delivery pipe connected to the temporary storage tank, and a second control valve is installed on the vent pipe.

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