Water coating wheel special for water-soluble pressed film of circuit board

Abstract

The utility model belongs to the technical field of circuit board production, and discloses a water coating wheel special for a water-soluble pressed film of a circuit board, the water coating wheel comprises an upper water coating wheel and a lower water coating wheel, the lower water coating wheel is arranged below the upper water coating wheel, and the left end of the lower water coating wheel and the left end of the upper water coating wheel are connected with a water sprinkling frame. The material can be kept in a soft state forever, it is guaranteed that the water coating wheels are wet, not hardened and not deformed, the optimal dry film filling effect is achieved at the sunken / scratched positions, meanwhile, a bearing plate, a water spraying pipe, a water baffle and a spraying head are arranged on the water spraying frame corresponding to the upper water coating wheel and the lower water coating wheel respectively, and clean water is pumped into a water supply pipe, so that the water spraying effect is achieved. The two water spraying pipes are promoted to synchronously spray water to the upper water coating wheel and the lower water coating wheel through a group of spraying heads on the surfaces of the water spraying pipes, and splashing water drops are blocked by the bearing plate and the two water baffles obliquely mounted on the surface of the bearing plate, so that the purpose that the upper water coating wheel and the lower water coating wheel respectively spray water is achieved.

Description

Technical Field

[0001] This application relates to the field of circuit board manufacturing technology, and more specifically, to a special water coating wheel for water-soluble lamination of circuit boards. Background Technology

[0002] Based on the trend of PCB / FPC products towards miniaturization and high integration, highly integrated and dense circuits are required per unit area to meet design requirements. As the circuits become denser and the spacing and pads become smaller, multi-layer circuits are needed. However, multi-layer circuits require multiple electroplating / lamination processes.

[0003] In existing technologies, during the wet lamination process of PCB / FPC products, a water coating wheel is required to wet the surface of the PCB / FPC product for efficient lamination. However, traditional water coating wheels are made of PU, resulting in poor water coating effect. Furthermore, the water coating wheel is prone to cracking and hardening, causing the dents / scratches on the PCB / FPC product to not achieve the optimal dry film filling effect. At the same time, the traditional water spraying frame used for water coating wheels sprays water from top to bottom, resulting in a significant difference in water supply between the two sides of the PCB / FPC product, which affects the water coating effect on both sides of the PCB / FPC product.

[0004] To address the aforementioned issues, this application provides a special water-coating wheel for water-soluble lamination of circuit boards. Utility Model Content

[0005] The water-coating wheel for water-soluble lamination of circuit boards provided in this application adopts the following technical solution:

[0006] A special water-coating wheel for water-soluble lamination of circuit boards includes an upper coating wheel and a lower coating wheel. The lower coating wheel is located below the upper coating wheel, and a sprinkler frame is connected to the left end of the lower coating wheel and the upper coating wheel. Two sprinkler pipes are interlaced on the surface of the sprinkler frame, and several spray heads are installed on the facing surfaces of the two sprinkler pipes. One end of the two sprinkler pipes is connected to a water supply pipe through a T-junction. Two support plates are welded to the surface of the sprinkler frame, and water baffles are installed on the facing surfaces of the two support plates, with the water baffles facing the upper coating wheel or the lower coating wheel. The inner side of both the upper and lower coating wheels is provided with a rigid PP hub, and the outer surface of the rigid PP hub is fitted with an EVA material water-coating sleeve, and the outer surface of the water-coating sleeve is provided with several grooves.

[0007] Furthermore, a mounting base is welded to the side of the sprinkler frame, and a motor is fixed to the mounting base by bolts. A transmission belt is wound between the output end of the motor and the right axle of the upper and lower water wheels.

[0008] Furthermore, the surface of the support plate is provided with several through holes corresponding to the spray head, and the two water baffles welded obliquely on the support plate are arranged in a trumpet-shaped structure.

[0009] Furthermore, the inner surface of the water-coating sleeve is integrally formed with several tapered protrusions, and the outer surface of the hard PP wheel hub is provided with several V-shaped grooves around the tapered protrusions. The gap between the hard PP wheel hub and the water-coating sleeve is filled with hot melt adhesive, and the surface of the water-coating sleeve is provided with linear cuts.

[0010] Furthermore, the upper and lower water wheels are connected to the sprinkler frame via snap-fit ​​couplings, and the snap-fit ​​couplings on the shafts of the upper and lower water wheels are snap-fit ​​couplings or snap rings.

[0011] Furthermore, the surface of the bearing plate is fitted with a bearing seat via quick-release bolts, and the bearing seat is connected to the axle of the upper or lower coating water wheel.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] The coating sleeves for both the upper and lower coating rollers are made of EVA material, which remains soft and ensures the rollers stay moist without hardening or deforming. This allows for optimal dry film filling of dents and scratches. A set of support plates, spray pipes, baffles, and spray heads are installed on the spray frame for each roller. As clean water is pumped into the supply pipes, the two spray pipes simultaneously spray water onto the upper and lower coating rollers through their respective spray heads. The support plates and two baffles installed at an angle block splashes, achieving separate water spraying from the upper and lower rollers, thus improving the coating effect and uniformity. Attached Figure Description

[0014] Figure 1 This is an installation diagram of the upper and lower coating waterwheels of this application;

[0015] Figure 2 This is a side view of the sprinkler rack in this application;

[0016] Figure 3 This is a schematic diagram of the upper coating water turbine structure of this application;

[0017] Figure 4 This is a schematic diagram of the water-coating sleeve structure of this application.

[0018] Explanation of the labels in the diagram:

[0019] 1. Upper coating water wheel; 2. Lower coating water wheel; 3. Sprinkler frame; 4. Motor; 5. Drive belt; 6. Bearing plate; 7. Sprinkler pipe; 8. Water baffle; 9. Water supply pipe; 10. Spray head; 11. Hard PP hub; 12. Water coating sleeve; 13. Conical convex strip; 14. Groove. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Example:

[0024] This application discloses a special water-coating wheel for water-soluble lamination of circuit boards. Please refer to [link / reference]. Figure 1-4The system includes an upper coating water wheel 1 and a lower coating water wheel 2. The lower coating water wheel 2 is located below the upper coating water wheel 1, and a sprinkler frame 3 is connected to the left end of the lower coating water wheel 2 and the upper coating water wheel 1. Two sprinkler pipes 7 are interlaced on the surface of the sprinkler frame 3, and several spray heads 10 are installed on the facing surfaces of the two sprinkler pipes 7. One end of the two sprinkler pipes 7 is connected to a water supply pipe 9 through a T-junction. Two support plates 6 are welded to the surface of the sprinkler frame 3, and water baffles 8 are installed on the facing surfaces of the two support plates 6, with the water baffles 8 facing either the upper coating water wheel 1 or the lower coating water wheel 2. A rigid PP wheel hub 11 is provided on the inner side of both the upper coating water wheel 1 and the lower coating water wheel 2. An EVA water-coating sleeve 12 is fitted onto the outer surface of the hub 11, and the outer surface of the water-coating sleeve 12 is provided with several grooves 14. The two water spray pipes 7 and the two support plates 6 correspond to the upper water-coating wheel 1 and the lower water-coating wheel 2, respectively, for spraying water. As for the motor 4, the control method of this utility model is to control it by manually starting and stopping the switch. The wiring diagram of the power element and the power supply are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring arrangement will not be explained in detail. In order to adjust the water flow, the surfaces of the two water spray pipes 7 are also provided with flow regulating valves (not shown in the figure).

[0025] In one embodiment, a mounting base is welded to the side of the sprinkler frame 3, and a motor 4 is fixed to the mounting base by bolts. A transmission belt 5 is wound between the output end of the motor 4 and the right axle of the upper coating water wheel 1 and the lower coating water wheel 2. With this structure, it is easy to drive the upper coating water wheel 1 and the lower coating water wheel 2 to rotate simultaneously, so as to realize the coating and conveying of PCB / FPC product substrate.

[0026] In one embodiment, the surface of the support plate 6 is provided with several through holes corresponding to the spray head 10, and the two baffles 8 welded obliquely on the support plate 6 are arranged in a trumpet-shaped structure. This structure makes it easy to make way for the spray head 10, and the two baffles 8 are used to prevent water droplets from splashing.

[0027] In one embodiment, the inner surface of the water-coating sleeve 12 is integrally formed with several tapered protrusions 13, and the outer surface of the hard PP hub 11 is provided with several V-shaped grooves around the tapered protrusions 13. The gap between the hard PP hub 11 and the water-coating sleeve 12 is filled with hot melt adhesive, and the surface of the water-coating sleeve 12 is provided with linear cuts. This structure makes the upper water-coating wheel 1 and the lower water-coating wheel 2 both composite structures. The tapered protrusions 13 of the water-coating sleeve 12 can maintain a reliable connection with the hard PP hub 11, so that the two will not rotate relative to each other. In addition, the water-coating sleeve 12 is made of EVA material, which can always remain soft, ensuring that the water-coating wheel is wet and improving the water-coating effect.

[0028] In one embodiment, the upper coating water wheel 1 and the lower coating water wheel 2 are connected to the sprinkler frame 3 by a snap-fit ​​coupling, and the snap-fit ​​couplings on the shafts of the upper coating water wheel 1 and the lower coating water wheel 2 are snap-fit ​​couplings or snap rings. With this structure, it is easy to quickly disassemble and maintain the upper coating water wheel 1 and the lower coating water wheel 2.

[0029] In one embodiment, the surface of the bearing plate 6 is fitted with a bearing seat via quick-release bolts, and the bearing seat is connected to the axle of the upper coating water wheel 1 or the lower coating water wheel 2. With this structure, combined with the above-mentioned snap-fit ​​installation method, the upper coating water wheel 1 and the lower coating water wheel 2 are easy to disassemble and maintain quickly, and the dry / water-soluble method can be freely switched.

[0030] The implementation principle of this embodiment is as follows: In use, the PCB / FPC product substrate is first placed between the upper coating water wheel 1 and the lower coating water wheel 2. Then, the motor 4 is started, causing the transmission belt 5 set at the output end of the motor 4 to drive the upper coating water wheel 1 and the lower coating water wheel 2 simultaneously. During this process, as clean water is pumped into the water supply pipe 9, the two spray pipes 7 spray water synchronously onto the upper coating water wheel 1 and the lower coating water wheel 2 through a set of spray nozzles 10 on their surfaces. The splashing water droplets are blocked by the support plate 6 and the two baffles 8 installed at an angle on its surface, so as to achieve the purpose of spraying water onto the upper coating water wheel 1 and the lower coating water wheel 2 respectively, thus achieving the coating of the PCB / FPC product substrate. At the same time, the coating sleeve 12 of the upper coating water wheel 1 and the lower coating water wheel 2 is made of EVA material. This material can always remain soft, ensuring that the coating water wheel is wet, does not harden, does not deform, and does not crack, so that the dent / scratch position achieves the best dry film filling effect.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circuit board water-soluble film pressing special coating water wheel, comprising an upper coating water wheel (1) and a lower coating water wheel (2), characterized in that: The lower part of the upper coating water wheel (1) is provided with a lower coating water wheel (2), and the left end of the lower coating water wheel (2) is connected with a watering frame (3), the surface of the watering frame (3) is provided with two watering pipes (7), the opposite faces of the two watering pipes (7) are respectively provided with a plurality of spray heads (10), one end of the two watering pipes (7) is connected with a water supply pipe (9) through a tee joint, the surface of the watering frame (3) is welded with two bearing plates (6), the opposite faces of the two bearing plates (6) are respectively provided with water baffle plates (8), and the water baffle plates (8) are arranged towards the upper coating water wheel (1) or the lower coating water wheel (2), the inner sides of the upper coating water wheel (1) and the lower coating water wheel (2) are provided with hard PP hubs (11), the outer surfaces of the hard PP hubs (11) are provided with coating water sleeve (12) made of EVA material, and the outer surfaces of the coating water sleeve (12) are provided with a plurality of cutting grooves (14).

2. The water-soluble circuit board special coating wheel according to claim 1, wherein: The side surface of the watering frame (3) is welded with a mounting seat, and the mounting seat is fixed with a motor (4) through bolts, and the output end of the motor (4) is wound with a transmission belt (5) between the right end shaft of the upper coating water wheel (1) and the lower coating water wheel (2).

3. The water-soluble circuit board special coating wheel according to claim 1, wherein: The surface of the bearing plate (6) is provided with a plurality of through holes corresponding to the spray head (10), and the two water baffle plates (8) obliquely welded on the bearing plate (6) are arranged in a horn shape.

4. The water-soluble circuit board special coating wheel according to claim 1, wherein: The inner surface of the coating water sleeve (12) is integrally formed with a plurality of conical protrusions (13), the outer surface of the hard PP hub (11) is provided with a plurality of V-shaped grooves corresponding to the conical protrusions (13), the gap between the hard PP hub (11) and the coating water sleeve (12) is filled with hot melt adhesive, and the surface of the coating water sleeve (12) is provided with a linear notch.

5. The water-soluble circuit board press film special coating wheel according to claim 1, wherein: The upper coating water wheel (1) and the lower coating water wheel (2) are connected with the watering frame (3) through a loose joint buckle, and the loose joint buckle of the shaft part of the upper coating water wheel (1) and the lower coating water wheel (2) is a buckle type shaft coupling or a clasp spring.

6. The water-soluble circuit board press-film special coating wheel according to claim 1, wherein: The surface of the bearing plate (6) is provided with an axle seat through quick release bolts, and the axle seat is connected with the shaft of the upper coating water wheel (1) or the lower coating water wheel (2).

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