General hot-plug automatic rewinding filtering device for chemical processing of PCB (Printed Circuit Board)

Abstract

The invention discloses a PCB chemical processing general hot plug automatic rewinding filtering device which comprises a rack and a control motor, the rack is provided with a containing cavity, one end of the rack is provided with an opening, one surface of the rack is provided with a water inlet and a water outlet, and the side face of the rack is provided with a liquid level sensor and a control host. The at least two control motors are fixedly arranged at the end, with the opening, of the rack, output shafts of the two control motors are each sleeved with a filter cloth roll, and filter cloth of the two filter cloth rolls is connected to form a filtrate area; the first filter cloth roll is used for releasing the filter cloth, the second filter cloth roll is used for recycling the filter cloth, the liquid level sensor is used for judging whether the current filter cloth reaches the filter cloth updating standard or not, updating and replacing of the filter cloth are automatically controlled through the control motor, manual filter cloth replacing is omitted, filter element replacing through shutdown is not needed, the production activation rate is increased, and the production cost is reduced. When a new filter cloth roll is replaced, the exhausted cloth roll can be directly taken down and replaced with the new filter cloth roll.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to a universal hot-plug automatic rewinding and filtering device for PCB chemical processing. Background Art

[0002] PCB board is a kind of precision electronic component. The circuits etched on its panel are very fine. However, since there are often tiny particles, dust, chemicals and other impurities attached to its surface, it may cause short circuit or open circuit problems, thus affecting the quality of the entire PCB board. At present, the main method of cleaning PCB boards is to remove impurities on the PCB boards through specific chemical solutions. However, since the chemical solution may also be attached with large particles of impurities, the PCB board cannot be completely cleaned. Therefore, the chemical solution needs to be cleaned before cleaning the PCB board.

[0003] In the prior art, impurities in chemical solutions are generally filtered through a dedicated chemical filter, and the filter element of the filter is used to adsorb the impurities in the chemical solution. However, the traditional filter will cause the filtration flow and filtration effect to decrease due to the attenuation of the filter element life, and when the filter element needs to be replaced and maintained, the machine needs to be shut down for replacement and maintenance, which leads to a decrease in productivity. Therefore, a PCB chemical solution filtration device with a more reasonable structure is urgently needed to solve the above technical problems. Summary of the invention

[0004] In view of the disadvantage in the above-mentioned technology that the filter element of the traditional filter needs to be stopped for replacement and maintenance, resulting in a decrease in productivity, the present invention provides a universal hot-swappable automatic rewinding filter device for PCB chemical processing.

[0005] To achieve the above purpose, the present invention provides a universal hot-swap automatic rewinding filter device for PCB chemical processing A frame, wherein the frame has a cavity and one end is open, a surface of the frame is provided with a water inlet and a water outlet, and a side of the frame is provided with a liquid level sensor and a control host; A control motor is provided with two output shafts, the control motor is fixedly arranged at one end of the frame having an opening, the two output shafts of the control motor are respectively sleeved with a first filter cloth roll and a second filter cloth roll, the first filter cloth roll and the second filter cloth roll are connected to each other, and the connection point between the first filter cloth roll and the second filter cloth roll is located between the water inlet and the water outlet.

[0006] As an improved solution of the present invention, guide plates are formed on both sides of the frame, the guide plates are inclined relative to the horizontal direction, and the filter cloths of the first filter cloth roll and the second filter cloth roll are attached to the guide plates.

[0007] As an improved solution of the present invention, the width of the filter cloth is adapted to the distance between the frame and the inner wall.

[0008] As an improved solution of the present invention, the first filter cloth roll and the second filter cloth roll are used for releasing new filter cloth and recovering old filter cloth respectively.

[0009] As an improved solution of the present invention, a guide rail is formed on a side of the guide plate that is in contact with the filter cloth, and the filter cloth roll is arranged in the guide rail.

[0010] As an improved solution of the present invention, the inner wall of the frame is formed with a load-bearing column for supporting the filter cloth roll.

[0011] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a universal hot-swappable automatic rewinding filter device for PCB chemical processing, comprising a frame and a control motor, the frame having a cavity and an opening at one end, a water inlet and a water outlet on one surface of the frame, a liquid level sensor and a control host on the side of the frame, at least two control motors fixedly arranged at the end of the frame having the opening, the output shafts of the two control motors are respectively sleeved with a filter cloth roll, the filter cloths of the two filter cloth rolls are connected to form a filtrate area, the filtrate area is arranged between the water inlet and the water outlet, the first filter cloth roll of the present invention is used to release the filter cloth, the second filter cloth roll is used to recover the filter cloth, the liquid level sensor is used to judge whether the current filter cloth reaches the standard for updating the filter cloth, the update and replacement of the filter cloth is automatically controlled by the control motor, manual operation for replacing the filter cloth is eliminated, and there is no need to stop the machine to replace the filter element, thereby improving the production utilization rate, and since the filter cloth roll of the present invention is arranged at the opening, when replacing a new filter cloth roll, the exhausted cloth roll can be directly removed and replaced with a new filter cloth roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A perspective view of the present invention; Figure 2 It is a cross-sectional view of the present invention.

[0013] The main component symbols are described as follows: 1. Frame; 11. Water inlet; 12. Water outlet; 2. Control motor; 3. First filter cloth roll; 4. Second filter cloth roll; 5. Liquid level sensor; 6. Control host; 7. Guide plate; 8. Load-bearing column. DETAILED DESCRIPTION

[0014] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0015] In the following description, the example details are given to provide a deeper understanding of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. It should be understood that the specific embodiments are only used to explain the present invention and are not used to limit the present invention.

[0016] It should be understood that when the terms "include" and / or "comprises" are used in this specification, they indicate the existence of the stated features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0017] At present, in the chemical solution used for cleaning PCB boards, impurities in the chemical solution are generally filtered through a dedicated chemical filter, and the filter element of the filter is used to adsorb the impurities in the chemical solution. However, the traditional filter will cause the filtration flow and filtration effect to decrease due to the attenuation of the filter element life, and when the filter element needs to be replaced and maintained, it is necessary to stop the machine for replacement and maintenance, which leads to a decrease in productivity. Therefore, a PCB chemical solution filter with a more reasonable structure is urgently needed to solve the above technical problems.

[0018] See also Figure 1-Figure 2 A universal hot-swappable automatic rewinding filter device for PCB chemical processing of the present invention comprises a frame 1 and a control motor 2. The frame 1 has a cavity and one end is open. A water inlet 11 and a water outlet 12 are arranged on one surface of the frame 1. A liquid level sensor 5 and a control host 6 are arranged on the side of the frame 1. The control motor 2 is provided with two output shafts. The control motor 2 is fixedly arranged at the end of the frame 1 with the opening. The two output shafts of the control motor 2 are respectively sleeved with a first filter cloth roll 3 and a second filter cloth roll 4. The first filter cloth roll 3 and the second filter cloth roll 4 are connected to each other. The connection point of the first filter cloth roll 3 and the second filter cloth roll 4 is located between the water inlet 11 and the water outlet 12. The filtrate area is arranged between the water inlet 11 and the filter cloth roll.

[0019] Among them, when the control motor 2 is started, the rotation directions of the two output shafts of the control motor 2 are the same, so that the first filter cloth roll 3 or the second filter cloth roll 4 can be used to release new filter cloth or to recycle old filter cloth, respectively. It can be understood that one of the first filter cloth roll 3 and the second filter cloth roll 4 is an empty cloth roll with only a roll core, which is mainly used to recycle the filter cloth of the other filter cloth roll.

[0020] When the device of the present invention is working, the chemical solution to be filtered is first discharged from the water inlet 11. The chemical solution will be in the filtrate area, and the large particles of impurities in the chemical solution will be adsorbed and blocked by the filter cloth, and the chemical solution will be immersed in the filter cloth and flow out in the direction of the water outlet 12, thereby completing the removal of impurities from the chemical solution. Further, when the filter cloth is consumed to a certain extent, the filtration flow and the filtration effect will be reduced. At this time, the liquid level of the chemical solution stored in the frame 1 will increase until it reaches the height that can be detected by the liquid level sensor 5. The liquid level sensor 5 will send a signal to the control host 6 to replace the filter cloth. At this time, the control motor 2 will roll the filter cloth to update the position, and roll the worn filter cloth onto the second filter cloth roll 4. At the same time, the new filter cloth on the first filter cloth roll 3 is synchronously replaced to the filtrate area, so that the filter element can be replaced or maintained without stopping the machine, thereby improving the productivity and utilization rate. Since the filter cloth roll is arranged at the opening of the frame 1, when replacing the new filter cloth roll, the filter element can be directly removed from the motor output shaft for replacement.

[0021] In this embodiment, guide plates 7 are formed on both sides of the frame 1, and the guide plates 7 are arranged obliquely relative to the horizontal direction. When the chemical solution is discharged from the water inlet 11, the chemical solution has a certain weight when falling, and the falling and hitting the filter cloth causes the filter cloth to tilt and sway. Therefore, by setting the guide plates 7, the filter cloth is attached to the guide plates 7, so that when the filter cloth is replaced with a new one, the filter cloth roll can move along the direction of the guide plates 7 to ensure that the position height of the filtrate area remains unchanged. Further, a guide rail can be provided on the side of the guide plate 7 facing the filter cloth, and the filter cloth can be embedded in the guide rail to prevent the chemical solution from falling and causing the filter cloth to separate from the guide plate 7 when the control motor 2 is started; and in order to ensure that the filter cloth roll will not be deformed due to the excessive weight of the chemical solution, at least one load-bearing column 8 for supporting the filter cloth roll is provided on the inner wall of the frame, and the multiple load-bearing columns 8 are arc-shaped and spaced apart. The contact surface between the load-bearing columns 8 and the filter cloth is an arc surface, and the load-bearing columns 8 can provide a certain supporting force for the filter cloth roll, and the chemical solution can be filtered and flowed out from the gaps between the load-bearing columns 8.

[0022] The advantages of the present invention are: 1. The filter cloths of the first filter cloth roll and the second filter cloth roll are updated and replaced by setting a control motor. Under the detection of the liquid level sensor, the liquid level height is automatically detected, so as to control the start of the control motor to realize automatic replacement of the filter cloth. After the filter cloth roll is exhausted, it can be directly removed from the motor for replacement without stopping for maintenance, thereby improving the production utilization rate.

[0023] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A universal hot-swap automatic rewinding filter device for PCB chemical processing, characterized in that: include: A frame, wherein the frame has a cavity and one end is open, a surface of the frame is provided with a water inlet and a water outlet, and a side of the frame is provided with a liquid level sensor and a control host; A control motor is provided with two output shafts, the control motor is fixedly arranged at one end of the frame having an opening, the two output shafts of the control motor are respectively sleeved with a first filter cloth roll and a second filter cloth roll, the first filter cloth roll and the second filter cloth roll are connected to each other, and the connection point between the first filter cloth roll and the second filter cloth roll is located between the water inlet and the water outlet.

2. A universal hot-swap automatic rewinding filter device for PCB chemical processing according to claim 1, characterized in that: Guide plates are formed on both sides of the frame. The guide plates are inclined relative to the horizontal direction, and the filter cloths of the first filter cloth roll and the second filter cloth roll are attached to the guide plates.

3. A universal hot-swap automatic rewinding filter device for PCB chemical processing according to claim 2, characterized in that: The width of the filter cloth is adapted to the distance between the frame and the inner wall.

4. A universal hot-swap automatic rewinding filter device for PCB chemical processing according to claim 1, characterized in that: The first filter cloth roll and the second filter cloth roll are used for releasing new filter cloth and recovering old filter cloth respectively.

5. A universal hot-swap automatic rewinding filter device for PCB chemical processing according to claim 2, characterized in that: A guide rail is formed on a side of the guide plate that is in contact with the filter cloth, and the filter cloth roll is arranged in the guide rail.

6. A universal hot-swap automatic rewinding filter device for PCB chemical processing according to claim 2, characterized in that: The inner wall of the frame is formed with at least one load-bearing column for supporting the filter cloth roll, and a plurality of the load-bearing columns are arranged at intervals.

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