PCB board water blocking mechanism

Abstract

The utility model relates to the technical field of PCB board production discloses a kind of PCB board water blocking mechanism.The PCB board water blocking mechanism includes water box and first presser component;Water box is used to hold the medicinal liquor of washing PCB board;First presser component includes two first pressers, and first presser is rotatably arranged, and at least one first presser can produce elastic deformation to be covered with PCB board and be attached when PCB board is conveyed to between two first pressers along X axis, to seal and resist the medicinal liquor on PCB board and backflow to water box inside.The PCB board water blocking mechanism can guarantee the close covering attachment between first presser and PCB board by the elastic deformation of at least one first presser, so that the first presser and PCB board form sealing structure to seal and resist the medicinal liquor on PCB board, effectively improve the waterproof performance of water box, do not need to frequently supplement medicinal liquor in water box, can save energy, and can guarantee the medicinal washing effect of medicinal liquor to PCB board.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing technology, and in particular to a water-blocking mechanism for PCB boards. Background Technology

[0002] like Figure 1 As shown, in the current PCB board 10' production process, when the PCB board 10' moves along its transport direction between the two opposing rigid pressure rollers 1' along the Z-axis, since the two rigid pressure rollers 1' along the Z-axis are usually made of rigid material, the PCB board 10' will slightly lift the rigid pressure rollers 1' upwards, such as... Figure 1 As shown, a gap exists between the two opposing rigid pressure rollers 1' along the Z-axis, creating a gap between the rigid pressure rollers 1' and the water tank. This causes the chemicals in the water tank to leak out through this gap, making it impossible to maintain a stable liquid level. Frequent replenishment of chemicals is necessary. Furthermore, the increased need for replenishment necessitates the use of a higher-power water pump, consuming energy and increasing the production cost of the PCB board 10'. Additionally, the large amount of chemicals leaking out of the water tank generates excessive foam, compromising the effectiveness of the chemicals in cleaning the PCB board 10'.

[0003] Therefore, there is an urgent need for a PCB board water-blocking mechanism that can solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a PCB board water-blocking mechanism that can ensure a tight fit between the first pressure roller and the PCB board through the elastic deformation of the first pressure roller, thereby effectively improving the waterproof performance of the water box.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A PCB board water-blocking mechanism includes:

[0007] Water box, used to hold the solution for cleaning PCB boards;

[0008] The first pressure roller assembly includes two first pressure rollers arranged opposite each other along the Z-axis. The first pressure rollers are rotatably arranged. When the PCB board is conveyed along the X-axis between the two first pressure rollers, at least one of the first pressure rollers can generate elastic deformation to cover and fit with the PCB board, so as to seal and block the medicine on the PCB board and return it to the water box.

[0009] As an optional solution, the first pressure roller is made of corrosion-resistant soft rubber material so that the first pressure roller can produce elastic deformation.

[0010] As an optional solution, the PCB board water-blocking mechanism further includes:

[0011] The second pressure roller assembly includes two second pressure rollers arranged opposite each other along the Z-axis. The second pressure rollers are rotatably disposed on one side of the first pressure roller. When the PCB board is conveyed along the X-axis between the two second pressure rollers, the second pressure rollers can resist the medicine on the PCB board so that it flows back into the water box.

[0012] As an option, the second pressure roller is made of a hard material so that it will not undergo elastic deformation.

[0013] As an option, the first pressure roller assembly is provided with at least one set, and / or the second pressure roller assembly is provided with at least one set.

[0014] As an optional solution, the water box includes a bottom plate, side plates and a top plate. Multiple side plates are connected and arranged around the bottom plate, and the top plate covers each of the side plates to form an accommodating space inside the water box. The PCB board passes through the side plates along the X-axis.

[0015] As an alternative, the second pressure roller assembly is placed inside the receiving space, and the first pressure roller assembly is placed outside the receiving space, so that the PCB board passes through the second pressure roller assembly first and then enters the first pressure roller assembly.

[0016] As an alternative, the second pressure roller assembly is placed outside the receiving space, and the first pressure roller assembly is placed inside the receiving space, so that the PCB board passes through the first pressure roller assembly first and then enters the second pressure roller assembly.

[0017] As an alternative, the first pressure roller assembly and the second pressure roller assembly are symmetrically arranged with respect to one of the side plates near the protruding end of the PCB board, and along the X-axis, the first pressure roller assembly and the second pressure roller assembly are respectively separated from the side plate.

[0018] As an optional feature, along the X-axis, the gap between the first pressure roller assembly and the second pressure roller assembly and the side plate is 0.45mm to 0.55mm respectively.

[0019] The beneficial effects of this utility model are as follows:

[0020] By including two first pressure rollers arranged opposite each other along the Z-axis in the first pressure roller assembly, when the PCB board is conveyed between the two first pressure rollers along the X-axis, at least one first pressure roller can undergo elastic deformation. That is, because at least one first pressure roller is flexible, the PCB board will not slightly push the first pressure roller upwards. Thus, the elastic deformation of at least one first pressure roller ensures that the first pressure roller can tightly cover and adhere to the PCB board, that is, there will be no gap between the two first pressure rollers opposite each other along the Z-axis. This forms a sealing structure between the first pressure roller and the PCB board to seal and block the liquid on the PCB board, allowing the liquid to flow directly back into the water tank, effectively improving the waterproof performance of the water tank, and preventing the second pressure roller from being exposed to the first pressure roller. A gap is created between the pressure roller and the water tank to prevent the chemicals in the water tank from leaking out, thus ensuring that the chemicals in the water tank remain at a stable level and eliminating the need for frequent replenishment. Furthermore, because the need for replenishment is reduced, a high-power water pump is not required; a suitable low-power pump can be used, reducing energy consumption and saving energy, thereby lowering the production cost of the PCB board. At the same time, the reduced amount of chemicals escaping from the water tank prevents excessive foaming, ensuring the effective cleaning of the PCB board. Moreover, the chemicals in the water tank are fully utilized, preventing waste and further reducing the production cost of the PCB board. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembly structure between the rigid pressure roller and the PCB board in the prior art;

[0022] Figure 2 This is a structural schematic diagram of the PCB board water-blocking mechanism provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure between the two first pressure rollers and the PCB board provided by this utility model.

[0024] Figure label:

[0025] 10' - PCB board; 1' - Hard pressure roller;

[0026] 10-PCB board;

[0027] 1-Water box; 11-Accommodation space; 12-Base plate; 13-Side plate;

[0028] 2-First pressure roller assembly; 21-First pressure roller;

[0029] 3-Second pressure roller assembly; 31-Second pressure roller;

[0030] 4-Conveyor roller assembly; 41-Conveyor roller. Detailed Implementation

[0031] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the structure or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment proposes a PCB board water-blocking mechanism. This mechanism ensures the water tank has good waterproof performance, maintaining a stable liquid level without frequent replenishment. A suitable low-power water pump can be used to replenish the water tank, reducing energy consumption and saving energy, thus lowering the PCB board production cost. Simultaneously, the reduced amount of water escaping from the tank minimizes foam generation, ensuring effective cleaning of the PCB board. Furthermore, it fully utilizes the remaining water, preventing waste and further reducing PCB board production costs. Specifically, PCB board refers to all PCB boards involved in the entire PCB board production process; PCB board stands for Printed Circuit Board.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, the PCB board water-blocking mechanism includes a first pressure roller assembly 2 and the aforementioned water box 1; wherein, the water box 1 is used to hold the chemical solution for washing the PCB board 10; the first pressure roller assembly 2 includes two first pressure rollers 21 arranged opposite each other along the Z-axis, the first pressure rollers 21 are rotatably arranged so that the PCB board 10 can be driven to move linearly along the X-axis by the rotation of the two first pressure rollers 21; when the PCB board 10 is conveyed along the X-axis between the two first pressure rollers 21, at least one first pressure roller 21 can generate elastic deformation to cover and fit with the PCB board 10, so as to seal and block the chemical solution on the PCB board 10 and return it to the water box 1, so as to prevent the chemical solution in the water box 1 from running out. The PCB board water-blocking mechanism in this embodiment changes the way water is blocked from the PCB board 10 compared to the prior art. By making the first pressure roller assembly 2 include two first pressure rollers 21 arranged opposite each other along the Z-axis, when the PCB board 10 is conveyed along the X-axis between the two first pressure rollers 21, at least one first pressure roller 21 can undergo elastic deformation. That is, since at least one first pressure roller 21 is flexible, the PCB board 10 will not slightly push the first pressure roller 21 upward. Thus, the elastic deformation of at least one first pressure roller 21 ensures that the first pressure roller 21 can tightly cover and adhere to the PCB board 10. Figure 3As shown, there is no gap between the two first pressure rollers 21 opposite each other along the Z-axis, so that a sealed structure is formed between the first pressure rollers 21 and the PCB board 10 to seal and block the chemical solution on the PCB board 10. This allows the chemical solution to flow directly back into the water tank 1, effectively improving the waterproof performance of the water tank 1. There is no gap between the first pressure rollers 21 and the water tank 1, preventing the chemical solution in the water tank 1 from leaking out. This ensures that the chemical solution in the water tank 1 remains at a stable level, eliminating the need for frequent replenishment. Furthermore, because the need for replenishment is reduced, a high-power water pump is not required; a suitable low-power water pump can be used, reducing energy consumption and saving energy, thus lowering the production cost of the PCB board 10. Simultaneously, the reduced amount of chemical solution leaking out of the water tank 1 prevents excessive foaming, ensuring the effective cleaning of the PCB board 10. Moreover, the chemical solution in the water tank 1 is fully utilized, preventing waste and further reducing the production cost of the PCB board 10.

[0037] And, as Figure 3 As shown, by enabling at least one first pressure roller 21 to undergo elastic deformation, the first pressure roller 21 can automatically adjust its elastic fit with the PCB board 10 according to the different thicknesses of the PCB board 10. That is, at least one first pressure roller 21 can adaptively wrap and fit onto the PCB board 10 according to the thickness of the PCB board 10, thereby ensuring a tight fit between the first pressure roller 21 and the PCB board 10. In other words, the elastic deformation of the first pressure roller 21 can be adapted to water blocking of various PCB boards 10 with different thicknesses, thereby improving the applicability and versatility of the entire PCB board water blocking mechanism.

[0038] It is worth noting that at least one of the first pressure rollers 21 mentioned above can undergo elastic deformation. Specifically, this means that one of the two first pressure rollers 21 can be flexible and the other can be rigid; alternatively, both first pressure rollers 21 can be flexible. Here, the specific type of the two first pressure rollers 21 is not limited, as long as at least one first pressure roller 21 is flexible enough to undergo elastic deformation. In this embodiment, both first pressure rollers 21 are flexible to better ensure a tight fit between the two first pressure rollers 21 and the PCB board 10.

[0039] It is worth noting that the chemical washing of PCB board 10 by the chemical solution in water box 1 is a common process in the existing PCB board production process. Therefore, the chemical washing process and principle of PCB board 10 will not be described in detail here.

[0040] Furthermore, such as Figure 2As shown, multiple sets of conveyor roller assemblies 4 are rotatably arranged inside the water box 1. Each set of conveyor roller assemblies 4 is arranged sequentially along the X-axis, and each set of conveyor roller assemblies 4 includes two conveyor rollers 41 arranged opposite each other along the Z-axis, so that the PCB board 10 can be moved linearly along the X-axis to between the two first pressure rollers 21 by the rotation of each conveyor roller 41. The conveyor rollers 41 can adopt the common conveyor roller structure in the prior art.

[0041] Specifically, the first pressure roller 21 is made of corrosion-resistant soft rubber. This material allows the first pressure roller 21 to undergo elastic deformation, ensuring a tight fit between it and the PCB board 10. Furthermore, it provides good corrosion resistance, preventing corrosion from chemicals and extending its lifespan. It is also suitable for various types of chemicals, making the entire PCB board water-blocking mechanism widely applicable. The specific material of the first pressure roller 21 is not limited here, as long as it can undergo elastic deformation and is corrosion-resistant.

[0042] Furthermore, such as Figure 2 As shown, the PCB board water-blocking mechanism also includes a second pressure roller assembly 3, which includes two second pressure rollers 31 arranged opposite each other along the Z-axis. The second pressure rollers 31 are rotatably arranged on one side of the first pressure roller 21 so that the PCB board 10 can be driven to move linearly along the X-axis by the rotation of the two second pressure rollers 31. When the PCB board 10 is conveyed along the X-axis between the two second pressure rollers 31, the second pressure rollers 31 can resist the liquid on the PCB board 10 to flow back into the water box 1, preventing the liquid in the water box 1 from running out.

[0043] By setting up a first pressure roller assembly 2 and a second pressure roller assembly 3 that work together, during the production process of the PCB board 10, the second pressure roller assembly 3 forms a hard water-blocking structure to block the chemicals on the PCB board 10, allowing the chemicals on the PCB board 10 to flow back into the water box 1; at the same time, the first pressure roller assembly 2 forms a soft water-blocking structure to block the chemicals on the PCB board 10, allowing the chemicals on the PCB board 10 to flow back into the water box 1; that is, in this embodiment, two water-blocking structures, a hard water-blocking structure and a soft water-blocking structure, are formed, which can effectively prevent the chemicals on the PCB board 10 from flowing out of the water box 1 during the transfer process, thereby ensuring that the chemicals in the water box 1 are always kept at a stable liquid level, thereby improving the efficiency of the chemical washing work on the PCB board 10.

[0044] Specifically, the second pressure roller 31 is made of a rigid material to prevent it from undergoing elastic deformation. In other words, the second pressure roller 31 is actually a rigid pressure roller to ensure that a large amount of medicine on the PCB board 10 is prevented from flowing out of the water box 1. Here, the specific material of the second pressure roller 31 is not limited.

[0045] Furthermore, such as Figure 2 As shown, at least one set of the first pressure roller assembly 2 and / or at least one set of the second pressure roller assembly 3 are provided. In this embodiment, both the first pressure roller assembly 2 and the second pressure roller assembly 3 are provided in one set, so as to reduce costs and ensure the structural simplicity and compactness of the entire PCB board water blocking mechanism while ensuring the water blocking effect on the water box 1. Here, the specific number of the first pressure roller assembly 2 and the second pressure roller assembly 3 is not limited.

[0046] Specifically, such as Figure 2 As shown, the water box 1 includes a base plate 12, side plates 13, and a top plate. Multiple side plates 13 are connected and arranged around the base plate 12, and the top plate covers each side plate 13, allowing them to connect and form a complete water box 1 structure, creating a receiving space 11 within the water box 1. A PCB board 10 passes through two opposite side plates 13 along the X-axis. The first pressure roller assembly 2 and the second pressure roller assembly 3 are both positioned near the side plate 13 at the protruding end of the PCB board 10. This prevents the liquid on the PCB board 10 from flowing back into the water box 1 when it exits, thus avoiding the liquid from flowing out of the water box 1. The specific shape of the water box 1 is not limited here and needs to be determined according to the specific washing conditions.

[0047] In this embodiment, preferably, as follows: Figure 2 As shown, the second pressure roller assembly 3 is placed inside the receiving space 11, and the first pressure roller assembly 2 is placed outside the receiving space 11, so that the PCB board 10 first passes through the second pressure roller assembly 3 and then enters the first pressure roller assembly 2; that is, the second pressure roller assembly 3 first forms a first hard water-blocking structure, thereby preventing a large amount of medicine on the PCB board 10 from flowing back into the water box 1; then the first pressure roller assembly 2 forms a second soft water-blocking structure, so that the elastic deformation of the first pressure roller 21 can be adapted to the shape and thickness of the PCB board 10, so as to further prevent the medicine on the PCB board 10 from flowing out, so that the medicine on the PCB board 10 can flow back into the receiving space 11 under the soft obstruction of the first pressure roller 21.

[0048] In other embodiments, the second pressure roller assembly 3 can be placed outside the receiving space 11, and the first pressure roller assembly 2 can be placed inside the receiving space 11, so that the PCB board 10 passes through the first pressure roller assembly 2 first and then enters the second pressure roller assembly 3, so as to ensure the blocking effect on the medicine on the PCB board 10.

[0049] Furthermore, such as Figure 2 As shown, the first pressure roller assembly 2 and the second pressure roller assembly 3 are symmetrically arranged with respect to a side plate 13 near the end of the PCB board 10, and along the X-axis, the first pressure roller assembly 2 and the second pressure roller assembly 3 have gaps with the side plate 13 respectively.

[0050] like Figure 2 As shown, the symmetrical and spaced arrangement serves two purposes: firstly, it prevents interference between the side plate 13 and the first pressure roller assembly 2 and the second pressure roller assembly 3, thus ensuring the normal operation of the first pressure roller assembly 2 and the second pressure roller assembly 3; secondly, the symmetrical arrangement ensures the balanced and uniform blocking effect of the first pressure roller assembly 2 and the second pressure roller assembly 3 on the liquid on the PCB board 10, thereby ensuring that the entire PCB board water blocking mechanism has better water blocking performance.

[0051] Specifically, such as Figure 2 As shown, the first pressure roller assembly 2 and the second pressure roller assembly 3 are provided at both the insertion end and the exit end of the PCB board 10 of the water box 1, so that the insertion end and the exit end of the PCB board 10 of the water box 1 can be interchanged, thereby improving the insertion flexibility and convenience of the PCB board 10.

[0052] Furthermore, such as Figure 2 As shown, along the X-axis, the gaps between the first pressure roller assembly 2 and the second pressure roller assembly 3 and the side plate 13 are 0.45mm to 0.55mm, respectively. This ensures that the gaps are appropriate, neither too small to interfere with the first and second pressure roller assemblies 2 and 3, nor too large to prevent the first pressure roller 21, located outside the receiving space 11, from obstructing the smooth backflow of the medicine into the water box 1. This ensures that the medicine in the water box 1 remains at a stable liquid level. In this embodiment, preferably, along the X-axis, the gaps between the first pressure roller assembly 2 and the second pressure roller assembly 3 and the side plate 13 are 0.5mm.

[0053] The PCB board water-blocking mechanism in this embodiment, such as Figure 2 As shown, a large amount of medicine is first blocked from flowing out of the water box 1 by the rigid second pressure roller 31; then, a sealing structure is formed between the soft rubber first pressure roller 21 and the PCB board 10 to further block the medicine from flowing out of the water box 1; finally, the gap between the first pressure roller assembly 2 and the second pressure roller assembly 3 and the side plate 13 is 0.45mm to 0.55mm respectively, so that the installation spacing of the first pressure roller assembly 2 and the second pressure roller assembly 3 is more appropriate, thereby better ensuring that the medicine blocked by the first pressure roller assembly 2 flows back into the water box 1; that is, in this embodiment, a three-layer water-blocking structure is used to achieve a better water-blocking effect, thereby ensuring that the medicine in the water box 1 is always kept at a stable liquid level.

[0054] The PCB board water-blocking mechanism in this embodiment, such as Figure 3 As shown, the elastic deformation of the first pressure roller 21 can adapt to blocking water on PCB boards 10 of various thicknesses and sizes, thereby improving the applicability and versatility of the entire PCB board water blocking mechanism.

[0055] The PCB board water-blocking mechanism in this embodiment, such as Figure 2 As shown, by setting up a first pressure roller assembly 2 and a second pressure roller assembly 3 with lower costs, and the first pressure roller assembly 2 and the second pressure roller assembly 3 have simple structures, good water blocking effect, easy assembly and energy efficiency, the water blocking stability of the entire PCB board water blocking mechanism can be enhanced, and the production efficiency of PCB board 10 can be significantly improved. At the same time, it can improve both production efficiency and energy consumption.

[0056] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A water-blocking mechanism for a PCB board, characterized in that, include: Water box (1), used to hold the solution for cleaning the PCB board (10); The first pressure roller assembly (2) includes two first pressure rollers (21) arranged opposite each other along the Z-axis. The first pressure rollers (21) are rotatably arranged. When the PCB board (10) is transported along the X-axis between the two first pressure rollers (21), at least one of the first pressure rollers (21) can generate elastic deformation to cover and adhere to the PCB board (10) to seal and block the medicine on the PCB board (10) and return it to the water box (1).

2. The PCB board water-blocking mechanism as described in claim 1, characterized in that, The first pressure roller (21) is made of corrosion-resistant soft rubber material so that the first pressure roller (21) can produce elastic deformation.

3. The PCB board water-blocking mechanism as described in claim 1, characterized in that, The PCB board water-blocking mechanism also includes: The second pressure roller assembly (3) includes two second pressure rollers (31) arranged opposite each other along the Z-axis. The second pressure rollers (31) are rotatably arranged on one side of the first pressure roller (21). When the PCB board (10) is conveyed along the X-axis between the two second pressure rollers (31), the second pressure rollers (31) can resist the medicine on the PCB board (10) so that it flows back into the water box (1).

4. The PCB board water-blocking mechanism as described in claim 3, characterized in that, The second pressure roller (31) is made of a hard material so that the second pressure roller (31) will not undergo elastic deformation.

5. The PCB board water-blocking mechanism as described in claim 3, characterized in that, The first pressure roller assembly (2) is provided with at least one set, and / or the second pressure roller assembly (3) is provided with at least one set.

6. The PCB board water-blocking mechanism as described in any one of claims 3-5, characterized in that, The water box (1) includes a bottom plate (12), side plates (13) and a top plate. The bottom plate (12) is surrounded and connected with multiple side plates (13). The top plate covers each side plate (13) to form an accommodating space (11) inside the water box (1). The PCB board (10) passes through the side plates (13) along the X-axis.

7. The PCB board water-blocking mechanism as described in claim 6, characterized in that, The second pressure roller assembly (3) is placed inside the receiving space (11), and the first pressure roller assembly (2) is placed outside the receiving space (11), so that the PCB board (10) passes through the second pressure roller assembly (3) first and then enters the first pressure roller assembly (2).

8. The PCB board water-blocking mechanism as described in claim 6, characterized in that, The second pressure roller assembly (3) is placed outside the receiving space (11), and the first pressure roller assembly (2) is placed inside the receiving space (11), so that the PCB board (10) passes through the first pressure roller assembly (2) and then enters the second pressure roller assembly (3).

9. The PCB board water-blocking mechanism as described in claim 7 or 8, characterized in that, The first pressure roller assembly (2) and the second pressure roller assembly (3) are symmetrically arranged with respect to a side plate (13) near the protruding end of the PCB board (10), and along the X-axis, the first pressure roller assembly (2) and the second pressure roller assembly (3) have gaps with the side plate (13).

10. The PCB board water-blocking mechanism as described in claim 9, characterized in that, Along the X-axis, the gaps between the first pressure roller assembly (2) and the second pressure roller assembly (3) and the side plate (13) are 0.45mm to 0.55mm respectively.

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