Automatic cleaning structure and groove body structure for wet process of flexible circuit board

Abstract

The utility model discloses an automatic cleaning structure and a groove body structure of a flexible circuit board wet process, the automatic cleaning structure is used for a groove body of the flexible circuit board wet process, and the automatic cleaning structure comprises a rotary spraying structure, a liquid inlet pipe, a liquid inlet electronic valve, a first spraying pump and a booster pump, the rotary spraying structure is rotatably arranged and is used for extending into the tank body; one end of the liquid inlet pipe is connected with the rotary spraying structure and the other end is connected with an external water source; the liquid inlet electronic valve is mounted on the liquid inlet pipe; the first spraying pump is mounted on the liquid inlet pipe; the booster pump is installed on the liquid inlet pipe and located between the first spraying pump and the rotary spraying structure.

Description

Technical Field

[0001] The utility model relates to the field of electronic technology, in particular to an automatic cleaning structure and a tank structure of a wet process of a flexible circuit board. Background Art

[0002] Flexible printed circuit board (FPC) is a highly reliable and flexible printed circuit board made of polyimide or polyester film. During the production of flexible printed circuit boards, the wet process tank may be contaminated by foreign matter, which will lead to abnormal product quality. The general practice is to perform tank maintenance regularly.

[0003] See also Figure 1 In the prior art, tank maintenance is performed manually, and the tank 100' is divided into an inner tank 1' and an outer tank 2'. Some corners of the tank 100' at the bottom and the connection between the inner tank 1' and the outer tank 2' cannot be cleaned during manual flushing, which is easy to contaminate the tank liquid again. Therefore, a new cleaning method is needed to automatically and comprehensively clean the tank.

[0004] The above contents are only used to assist in understanding the technical solution of the present utility model and do not constitute an admission that the above contents are prior art. Utility Model Content

[0005] The main purpose of the utility model is to provide an automatic cleaning structure and a tank structure for a wet process of a flexible circuit board, aiming to solve the problem that in the prior art, tank maintenance is all performed manually, and the tank is divided into an inner tank and an outer tank. Some tank corners at the bottom and the connection between the inner and outer tanks cannot be cleaned during manual flushing, which easily contaminates the tank liquid again.

[0006] In order to achieve the above-mentioned object, the utility model provides an automatic cleaning structure for a tank body of a wet process of a flexible circuit board, the automatic cleaning structure comprising:

[0007] A rotary spraying structure, which can be rotatably arranged and is used to extend into the tank body;

[0008] A liquid inlet pipe, one end of which is connected to the rotary spraying structure, and the other end is connected to an external water source;

[0009] A liquid inlet electronic valve, installed on the liquid inlet pipe;

[0010] a first spray pump, mounted on the liquid inlet pipe; and

[0011] A booster pump is installed on the liquid inlet pipe and is located between the first spray pump and the rotary spray structure.

[0012] Preferably, in the automatic cleaning structure, the rotary spraying structure comprises:

[0013] a nozzle structure, connected to the liquid inlet pipe; and

[0014] A plurality of rotating nozzle structures are arranged at intervals on the nozzle structure and are communicated with the nozzle structure.

[0015] Preferably, in the automatic cleaning structure, the distance between two adjacent rotating nozzle structures is H, and H is less than 30m.

[0016] Preferably, in the automatic cleaning structure, each of the rotating nozzle structures comprises:

[0017] A first nozzle is fixed on the nozzle structure and extends radially along the nozzle structure; and

[0018] A plurality of nozzles are arranged on the outer wall of the first nozzle, and the plurality of nozzles are oriented in different directions.

[0019] Preferably, in the automatic cleaning structure, each nozzle is provided with a plurality of injection ports.

[0020] Preferably, in the automatic cleaning structure, one end of each nozzle is fixedly arranged on the first nozzle pipe, and the other end is arranged in an arc surface, and the multiple injection ports are arranged on the arc surface.

[0021] Preferably, in the automatic cleaning structure, the first nozzle includes a first section, a second section, and a third section connected in sequence along the length direction, and the first section and / or the third section are gradually widened toward the second section.

[0022] In order to achieve the above-mentioned object, the utility model further provides a tank structure for a wet process of a flexible circuit board, the tank structure for a wet process of a flexible circuit board comprising:

[0023] Tank body;

[0024] The above-mentioned automatic cleaning structure, wherein the rotating spraying structure of the automatic cleaning structure extends from the bottom of the tank body into the tank body.

[0025] Preferably, in the trough structure of the flexible circuit board wet process, the nozzle structure of the rotary spraying structure is arranged at the bottom of the trough along the first direction.

[0026] Preferably, in the tank structure of the flexible circuit board wet process, the tank structure of the flexible circuit board wet process further comprises:

[0027] A conveying structure, disposed in the tank body and used to convey the product along a first direction;

[0028] A spraying device, comprising an upper spraying structure and a lower spraying structure arranged in the up-down direction, the upper spraying structure and the lower spraying structure are connected, and the upper spraying structure and the lower spraying structure are respectively arranged on both sides of the conveying structure in the up-down direction;

[0029] A connecting pipeline, one end of which is respectively connected to the upper spray structure and the lower spray structure, and the other end is arranged at the bottom of the tank body; and

[0030] The second spray pump is connected to the connecting pipeline and is located between two ends of the connecting pipeline.

[0031] The utility model has at least the following beneficial effects:

[0032] The utility model installs the rotary spraying structure of the automatic cleaning structure into the tank body. Since the rotary spraying structure of the automatic cleaning structure can rotate, it can rotate and spray in the tank body, thus realizing spraying in every corner of the tank body.

[0033] Furthermore, by controlling the liquid inlet electronic valve, the booster pump and the first spray pump to turn on, the external water source is pumped out of the liquid inlet pipe under the action of the first spray pump, and is pressurized by the booster pump, and enters the rotating spray structure, and the rotating spray structure rotates to achieve spraying in every corner. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the tank structure of the wet process of the flexible circuit board in the prior art;

[0035] Figure 2 A three-dimensional diagram of an embodiment of the automatic cleaning structure provided by the utility model;

[0036] Figure 3 for Figure 2 Schematic diagram of the middle tank;

[0037] Figure 4 for Figure 2 A schematic diagram of an embodiment of a partial structure in the middle;

[0038] Figure 5 for Figure 2 Schematic diagram of the rotating spraying structure;

[0039] Figure 6 for Figure 5 A schematic diagram of an embodiment of a rotating nozzle structure;

[0040] Figure 7 for Figure 6 Schematic diagram of the structure of the middle part;

[0041] Figure 8 for Figure 7 Schematic diagram at A in the middle.

[0042] Prior art reference numerals:

[0043] Label name Label name 100’ Tank 2’ External groove 1’ Inner groove

[0044] The utility model is marked with the following reference numerals:

[0045]

[0046]

[0047] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] In the embodiments of the present invention, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0050] The term "plurality" in the embodiments of the present invention refers to two or more than two, and other quantifiers are similar thereto.

[0051] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0052] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings. However, it can be understood by those skilled in the art that in the embodiments of the utility model, many technical details are proposed in order to enable readers to better understand the utility model. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection of the utility model can also be implemented. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the utility model. The various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0053] During the production of flexible circuit boards, the wet process tank may be contaminated by foreign matter, which will lead to abnormal product quality. The general practice is to perform tank maintenance regularly. Figure 1 In the prior art, the tank body is maintained manually, and the tank body is divided into an inner tank 1' and an outer tank 2'. Some tank body corners at the bottom and the connection between the inner tank 1' and the outer tank 2' cannot be cleaned during manual flushing, which is easy to contaminate the tank liquid again.

[0054] The general tank cleaning and maintenance method is acid and alkali cleaning + personnel water pipe flushing. Specifically, it includes:

[0055] (1) First, drain the waste liquid in the tank and perform alkaline washing.

[0056] More specifically, you can first add half a tank of plasma water, then add an appropriate amount of NAOH and soak for 1 hour before draining it.

[0057] (2) Fill the tank with plasma water, soak for 30 minutes and then drain.

[0058] (3) Add half a tank of plasma water, then add an appropriate amount of H2SO4 and soak for 1 hour before draining;

[0059] (4) Employees manually use the water pipe to clean the tank wall with plasma water. After flushing, the tank maintenance is completed.

[0060] However, it is difficult to fully and thoroughly rinse the auxiliary tank, the connection position with the main tank, and the bottom area of ​​the main tank.

[0061] To this end, the utility model provides an automatic cleaning structure, please refer to Figures 2 to 5 , a tank body 210 for wet process of flexible circuit boards, the automatic cleaning structure 100 includes a rotary spraying structure 1, a liquid inlet pipe 2, a liquid inlet electronic valve 3, a first spraying pump 4, and a booster pump 5. The rotary spraying structure 1 can be rotatably arranged and is used to extend into the tank body 210; one end of the liquid inlet pipe 2 is connected to the rotary spraying structure 1, and the other end is connected to an external water source; the liquid inlet electronic valve 3 is installed on the liquid inlet pipe 2; the first spraying pump 4 is installed on the liquid inlet pipe 2; the booster pump 5 is installed on the liquid inlet pipe 2 and is located between the first spraying pump 4 and the rotary spraying structure 1.

[0062] During operation, the rotary spraying structure 1 of the automatic cleaning structure 100 is installed in the tank body 210. Since the rotary spraying structure 1 of the automatic cleaning structure 100 can rotate, it can rotate and spray in the tank body 210, thereby achieving spraying in every corner of the tank body 210.

[0063] Specifically, it also includes a controller, which is electrically connected to the liquid inlet electronic valve 3, the booster pump 5 and the first spray pump 4. When the controller controls the liquid inlet electronic valve 3, the booster pump 5 and the first spray pump 4 to turn on, the external water source is pumped out of the liquid inlet pipe 2 under the action of the first spray pump 4, and is pressurized by the booster pump, and enters the rotating spray structure 1, and the rotating spray structure 1 rotates to achieve spraying in each corner.

[0064] More specifically, after the tank 210 is cleaned with acid and alkali, the liquid inlet electronic valve 3, the booster pump 5, and the first spray pump 4 are controlled to be turned on, and the spray pressure is set to be greater than 2 kg / cm 2 ; Synchronously open the waste liquid drain pipe of the tank body 210 to discharge the waste water after spraying and flushing; the rotary spraying structure 1 performs rotary spraying, so that the tank body 210 is sprayed and cleaned without dead angles, and the spray cleaning setting time is greater than 10min.

[0065] The external water source may be a water tank filled with plasma water, or other spray cleaning solutions, which are not specifically limited herein.

[0066] In addition, the liquid inlet pipe 2 and the rotary spraying structure 1 can be, but are not limited to, made of a material resistant to acid and alkali corrosion, such as stainless steel, corrosion-resistant alloy, etc.

[0067] There are many ways to set the rotary spray structure 1. For example, the rotary spray structure 1 is distributed at different positions of the tank body 210. The rotary spray structure 1 may also include a nozzle structure 11 and a plurality of rotary nozzle structures 12. The nozzle structure 11 is connected to the liquid inlet pipe 2; the plurality of rotary nozzle structures 12 are arranged at intervals on the nozzle structure 11 and are connected to the nozzle structure 11. The number of rotary nozzle structures 12 may be set according to the size and length of the tank body 210. In this embodiment, the spacing between two adjacent rotary nozzle structures 12 is H, H < 30m. In other embodiments, it may also be determined according to the spraying range of each rotary nozzle structure 12. The plurality of rotary nozzle structures 12 may be arranged at intervals along the axial direction of the nozzle structure 11, may be arranged at intervals along the circumferential direction of the nozzle structure 11, or may be a combination of the two schemes. No specific restrictions are made here. The arrangement of the plurality of rotary nozzle structures 12 may be based on the size of the tank body 210 to cover the entire area as much as possible.

[0068] Among them, see Figures 6 to 8Each rotating nozzle structure 12 includes a first nozzle 121 and a plurality of nozzles 122. The first nozzle 121 is fixed on the nozzle structure 11 and is arranged to extend radially along the nozzle structure 11. The plurality of nozzles 122 are arranged on the outer wall of the first nozzle 121, and the plurality of nozzles 122 have different orientations, which can further increase the coverage area. The rotating nozzle can cover a larger area by setting the nozzles 122 in different orientations. The high-pressure water flow enters the nozzle structure 11, and then enters the plurality of rotating nozzle structures 12 from the nozzle structure 11, and then enters the first nozzle 121 of each rotating nozzle structure 12, and then enters the corresponding plurality of nozzles 122 from the first nozzle 121, and the water flow is sprayed from the nozzles 122 to the area of ​​the sink that needs to be cleaned.

[0069] Furthermore, each nozzle 122 is provided with a plurality of injection ports 1221. One end of each nozzle 122 is fixedly arranged with the first nozzle 121, and the other end is arranged in an arc surface, and the plurality of injection ports 1221 are arranged on the arc surface. For example, two rotating nozzle structures 12 are arranged along the circumference at the same axial position of the nozzle structure 11, and the two rotating nozzle structures 12 can be arranged on the nozzle structure 11 in a radially symmetrical manner. Each rotating nozzle structure 12 includes eight nozzles 122, and the eight nozzles 122 are arranged on the first nozzle 121. The angles of the nozzles 122 are different, and each nozzle 122 covers a 30° angle area. Each nozzle 122 is provided with 5 water spray ports, so that the two rotating nozzle structures 12 arranged along the circumference at the same axial position of the nozzle structure 11 can cover the entire area.

[0070] In order to make each rotating nozzle structure 12 cover a larger area, the first nozzle 121 includes a first section 1211, a second section 1212, and a third section 1213 which are connected in sequence along the length direction. The first section 1211 and / or the third section 1213 are gradually widened toward the second section 1212, so that the multiple nozzles 122 arranged on the first nozzle 121 can cover a larger area.

[0071] In order to achieve the above-mentioned purpose, the utility model also provides a tank structure 200 for wet processing of flexible circuit boards, which includes a tank body 210 and the above-mentioned automatic cleaning structure 100, and the rotating spraying structure 1 of the automatic cleaning structure 100 extends into the tank body 210 from the bottom of the tank body 210.

[0072] It should be noted that the embodiment of the tank structure 200 for the wet process of the flexible circuit board includes the embodiment of the automatic cleaning structure 100, and the beneficial effects of the automatic cleaning structure 100 can be applied to the tank structure 200 for the wet process of the flexible circuit board. Similarly, the embodiment of the automatic cleaning structure 100 includes the embodiment of the tank structure 200 for the wet process of the flexible circuit board, and the beneficial effects of the tank structure 200 for the wet process of the flexible circuit board can be applied to the automatic cleaning structure 100.

[0073] More specifically, the nozzle structure 11 of the rotary spraying structure 1 is arranged at the bottom of the tank body 210 along the first direction, so as to facilitate cleaning of the tank body 210 and avoid the situation where the corners of the tank body 210 and the connection between the inner tank 211 and the outer tank 212 cannot be cleaned.

[0074] The tank structure 200 of the flexible circuit board wet process also includes a conveying structure 220, a spraying device 230, a connecting pipe 240 and a second spraying pump 250. The conveying structure 220 is arranged in the tank 210 and is used to convey the product along the first direction; the spraying device 230 includes an upper spraying structure and a lower spraying structure arranged in the up and down directions, and the upper spraying structure is connected to the lower spraying structure, and the upper spraying structure and the lower spraying structure are respectively arranged on both sides of the conveying structure 220 in the up and down directions; one end of the connecting pipe 240 is respectively connected to the upper spraying structure and the lower spraying structure, and the other end is arranged at the bottom of the tank 210; the second spraying pump 250 is connected to the connecting pipe 240 and is located between the two ends of the connecting pipe 240.

[0075] The conveying structure 220 may include an upper roller group and a lower roller group, which are arranged in an upper and lower arrangement, wherein the rollers of the upper roller group and the rollers of the lower roller group are arranged crosswise, so as to facilitate the conveying of products.

[0076] It should be noted that the other end of the connecting pipe 240 can also be connected to other cleaning sinks, which is not specifically limited here.

[0077] The product is conveyed through the conveying structure 220, and is rinsed through the upper spray structure and the lower spray structure respectively. When the sink needs to be cleaned after the rinsing is completed, the controller controls the liquid inlet electronic valve 3 and the first spray pump 4 to be turned on. The external water source is pumped out of the liquid inlet pipe 2 under the action of the first spray pump 4, and is pressurized by increasing the pump, and enters the nozzle structure 11 of the rotating spray structure 1, and enters the first nozzle 121 of the multiple rotating nozzle structures 12 through the nozzle structure 11, and realizes spraying in every corner through multiple nozzles 122.

[0078] Obviously, the above described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. An automatic cleaning structure, used for a tank body of a wet process of a flexible circuit board, characterized in that: include: A rotary spraying structure, which can be rotatably arranged and is used to extend into the tank body; A liquid inlet pipe, one end of which is connected to the rotary spraying structure, and the other end is connected to an external water source; A liquid inlet electronic valve, installed on the liquid inlet pipe; a first spray pump, mounted on the liquid inlet pipe; and A booster pump is installed on the liquid inlet pipe and is located between the first spray pump and the rotary spray structure.

2. The automatic cleaning structure according to claim 1, characterized in that: The rotary spraying structure comprises: a nozzle structure, connected to the liquid inlet pipe; and A plurality of rotating nozzle structures are arranged at intervals on the nozzle structure and are communicated with the nozzle structure.

3. The automatic cleaning structure according to claim 2, characterized in that: The distance between two adjacent rotating sprinkler structures is H, where H is less than 30 m.

4. The automatic cleaning structure according to claim 2, characterized in that: Each of the rotating nozzle structures comprises: A first nozzle is fixed on the nozzle structure and extends radially along the nozzle structure; and A plurality of nozzles are arranged on the outer wall of the first nozzle, and the plurality of nozzles are oriented in different directions.

5. The automatic cleaning structure according to claim 4, characterized in that: Each nozzle is provided with a plurality of injection ports.

6. The automatic cleaning structure according to claim 5, characterized in that: One end of each nozzle is fixedly arranged on the first nozzle pipe, and the other end is arranged in an arc surface, and the multiple injection ports are arranged on the arc surface.

7. The automatic cleaning structure according to claim 4, characterized in that: The first nozzle includes a first section, a second section, and a third section which are connected in sequence along the length direction. The first section and / or the third section are gradually widened toward the second section.

8. A tank structure for wet process of flexible circuit board, characterized in that: include: Tank body; The automatic cleaning structure according to any one of claims 1 to 7, wherein the rotating spraying structure of the automatic cleaning structure extends from the bottom of the trough body into the trough body.

9. The tank structure for wet process of flexible circuit board according to claim 8, characterized in that: The nozzle structure of the rotary spraying structure is arranged at the bottom of the trough body along a first direction.

10. The tank structure for wet process of flexible circuit board according to claim 8, characterized in that: Also includes: A conveying structure, disposed in the tank body and used to convey the product along a first direction; A spraying device, comprising an upper spraying structure and a lower spraying structure arranged in the up-down direction, the upper spraying structure and the lower spraying structure are connected, and the upper spraying structure and the lower spraying structure are respectively arranged on both sides of the conveying structure in the up-down direction; A connecting pipeline, one end of which is respectively connected to the upper spray structure and the lower spray structure, and the other end is arranged at the bottom of the tank body; and The second spray pump is connected to the connecting pipeline and is located between two ends of the connecting pipeline.

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