Etching device for FPC circuit board production
By designing an etching device with active and auxiliary conveying mechanisms, the problems of etching solution residue and gripper friction damage on the circuit board surface were solved, achieving clean and straight conveying of the circuit board and improving its quality and reliability.
Patent Information
- Application Number
- CN202423021652.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Damage caused by residual etching solution on the circuit board surface and damage caused by friction from the grippers in existing etching equipment affect the quality and reliability of the circuit boards.
An etching device including an active conveying mechanism and an auxiliary conveying mechanism was designed. The device uses guide wheels, guide rollers and sliding rollers to reduce friction, and blows off residual etching liquid through air nozzles. The device also combines spray heads and collection tanks to reduce the "pool effect".
It effectively reduces friction damage to the circuit board, ensures the flatness of the circuit board, and cleans the surface of the circuit board to avoid damage to the circuit board caused by etching solution residue.
Smart Images
Figure CN223928548U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of etching equipment technology, and specifically to an etching device for the production of FPC circuit boards. Background Technology
[0002] Most common circuit board manufacturing processes use wet etching. After tin plating for protection of the circuit diagram, the electronic board is etched by spraying etching solution. During horizontal etching, the etching solution on the upper surface of the circuit board cannot flow out quickly, resulting in residue. This residue has a negative impact on the etching effect of the circuit board, which is known as the "pool effect". The etching solution on the lower surface of the circuit board can fall quickly, resulting in differences in etching rate and etching uniformity between the upper and lower surfaces of the circuit board.
[0003] In common FPC circuit board production processes, etching equipment often employs a gripper structure. During etching, the significant friction between the circuit board and the grippers can easily damage the circuit board surface, increasing production losses. Furthermore, a small amount of etching solution often remains on the circuit board surface after etching, which can cause further damage, affecting the quality and reliability of the circuit board. Utility Model Content
[0004] The purpose of this invention is to provide an etching device for FPC circuit board production in order to solve the problems of residual etching solution on the circuit board surface after etching by common etching equipment and damage to the circuit board surface caused by the grippers.
[0005] This utility model achieves the above-mentioned objectives through the following technical solution: It includes a collection tank, with supports at both ends. A conveying device is located above the collection tank. Spray heads are located on both sides of the conveying device and connected to an external liquid supply device. The conveying device includes an active conveying mechanism and an auxiliary conveying mechanism. The active conveying mechanism includes an installation component. Two rotating wheel mounting blocks are located at the bottom of the installation component. Several guide wheels are embedded in the inner side of the rotating wheel mounting blocks and are rotatably connected. A transmission box and a motor are installed at one end of the installation component. The transmission box and several guide wheels are connected to each other via a synchronous toothed belt and gear transmission. A fan is installed at the top of the other end of the installation component. A downward-facing air outlet is located between the two rotating wheel mounting blocks. The air outlet is connected to the fan via a pipeline.
[0006] Furthermore, the auxiliary conveying mechanism includes two roller mounting blocks, and a plurality of guide rollers are provided between the two roller mounting blocks and are rotatably connected.
[0007] Furthermore, the active conveying mechanism is located at the top of the circuit board to be processed, and the auxiliary conveying mechanism is located at the bottom of the circuit board to be processed.
[0008] Furthermore, the rotating wheel mounting block is connected to the mounting component by screws, and the roller mounting block is connected to the bracket by screws.
[0009] Furthermore, the bracket has a U-shaped design, and vertical sliding rollers are provided on the inner wall of the U-shape of the bracket and are rotatably connected.
[0010] Furthermore, the guide roller is slidably connected to the upper two sides of the circuit board to be processed, the guide roller is slidably connected to the bottom of the circuit board to be processed, the sliding roller is slidably connected to the two sides of the circuit board to be processed, and the air outlet is located at the top of the circuit board to be processed and maintains a distance.
[0011] Beneficial effects: This utility model is reasonably designed and has the following beneficial effects:
[0012] 1. In this utility model, the sliding connection between the guide wheel in the active conveying mechanism, the guide roller in the auxiliary conveying mechanism, and the sliding roller on the bracket and the circuit board to be processed greatly reduces the friction of the circuit board during the conveying process, reduces the loss during the production process, and at the same time ensures the flatness of the circuit board and avoids damage to the circuit board caused by friction.
[0013] 2. In this utility model, the setting of the air outlet and the fan allows a small amount of etching solution remaining on the surface of the circuit board to be blown into the collection tank during the etching process, making the surface of the circuit board cleaner and avoiding damage to the surface of the circuit board caused by the residual etching solution. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the active conveying mechanism of this utility model;
[0016] Figure 3 This is a schematic diagram of the auxiliary conveying mechanism of this utility model.
[0017] In the diagram: 1-Collection tank, 2-Support, 3-Conveying device, 4-Spray head;
[0018] 21-Sliding roller, 31-Active conveying mechanism, 32-Auxiliary conveying mechanism;
[0019] 311-Mounting component, 312-Roller mounting block, 313-Guide roller, 314-Transmission box, 315-Motor, 316-Fan, 317-Air outlet, 321-Roller mounting block, 322-Guide roller. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Combination Figures 1 to 3 The etching apparatus shown is for the production of FPC circuit boards. It includes a collection tank 1 with supports 2 at both ends. A conveying device 3 is provided above the collection tank 1. Spray heads 4 are provided on both sides of the conveying device 3 and connected to an external liquid supply device. The conveying device 3 includes an active conveying mechanism 31 and an auxiliary conveying mechanism 32. The active conveying mechanism 31 includes a mounting component 311. Two rotating wheel mounting blocks 312 are provided at the bottom of the mounting component 311. Several guide wheels 313 are embedded in the inner side of the rotating wheel mounting blocks 312 and are rotatably connected. A transmission box 314 and a motor 315 are installed at one end of the mounting component 311. The transmission box 314 and the several guide wheels 313 are connected to the gear transmission via a synchronous toothed belt. A fan 316 is installed at the top of the other end of the mounting component 311. An air outlet 317 with an downward outlet is provided between the two rotating wheel mounting blocks 312. The air outlet 317 is connected to the fan 316 via a pipeline.
[0022] The auxiliary conveying mechanism 32 includes two roller mounting blocks 321, and a number of guide rollers 322 are provided between the two roller mounting blocks 321 and are rotatably connected.
[0023] The active conveying mechanism 31 is located at the top of the circuit board to be processed, and the auxiliary conveying mechanism 32 is located at the bottom of the circuit board to be processed.
[0024] The roller mounting block 312 is connected to the mounting piece 311 by screws, and the roller mounting block 321 is connected to the bracket 2 by screws.
[0025] The bracket 2 has a U-shaped design, and vertical sliding rollers 21 are provided on the inner wall of the U-shape and are rotatably connected.
[0026] The guide roller 313 is slidably connected to the upper two sides of the circuit board to be processed, the guide roller 322 is slidably connected to the bottom of the circuit board to be processed, the slide roller 21 is slidably connected to the two sides of the circuit board to be processed, and the air outlet 317 is located at the top of the circuit board to be processed and maintains a distance.
[0027] Working principle: During use, the circuit board is fed into the U-shaped inner wall of the bracket 2. The transmission box 314 drives the guide wheel 313 to rotate and push the circuit board. The guide roller 322 and the sliding roller 21 follow the rotation of the circuit board to reduce friction. The spray head 4 sprays etching liquid onto the circuit board to perform etching work. The etching liquid sprayed onto the circuit board flows into the collection tank 1 under the influence of gravity, reducing the "pool effect". Meanwhile, the fan 316 generates airflow and blows the remaining small amount of etching liquid down into the collection tank 1 through the air outlet 317.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An etching apparatus for FPC circuit board production, comprising a collection tank (1), characterized in that: The collection tank (1) is provided with brackets (2) at both ends. A conveying device (3) is provided above the collection tank (1). Spray heads (4) are provided on both sides of the conveying device (3) and connected to an external liquid supply device. The conveying device (3) includes an active conveying mechanism (31) and an auxiliary conveying mechanism (32). The active conveying mechanism (31) includes a mounting component (311). Two rotating wheel mounting blocks (312) are provided at the bottom of the mounting component (311). The rotating wheel mounting blocks (312) are embedded with a... Several guide wheels (313) are connected to each other in rotation. One end of the mounting component (311) is equipped with a transmission box (314) and a motor (315). The transmission box (314) and several guide wheels (313) are connected to each other by a synchronous toothed belt and gear transmission. A fan (316) is installed on the top of the other end of the mounting component (311). An air outlet (317) with the outlet facing downward is provided between the two rotating wheel mounting blocks (312). The air outlet (317) is connected to the fan (316) through a pipeline.
2. The etching apparatus for FPC circuit board production according to claim 1, characterized in that: The auxiliary conveying mechanism (32) includes two roller mounting blocks (321), and a plurality of guide rollers (322) are provided between the two roller mounting blocks (321) and are rotatably connected.
3. The etching apparatus for FPC circuit board production according to claim 2, characterized in that: The active conveying mechanism (31) is located at the top of the circuit board to be processed, and the auxiliary conveying mechanism (32) is located at the bottom of the circuit board to be processed.
4. An etching apparatus for FPC circuit board production according to claim 3, characterized in that: The rotating wheel mounting block (312) is connected to the mounting component (311) by screws, and the roller mounting block (321) is connected to the bracket (2) by screws.
5. An etching apparatus for FPC circuit board production according to claim 4, characterized in that: The bracket (2) is U-shaped, and vertical sliding rollers (21) are provided on the inner wall of the U-shape of the bracket (2) and are rotatably connected.
6. An etching apparatus for FPC circuit board production according to claim 5, characterized in that: The guide wheel (313) is slidably connected to the upper two sides of the circuit board to be processed, the guide roller (322) is slidably connected to the bottom of the circuit board to be processed, the sliding roller (21) is slidably connected to the two sides of the circuit board to be processed, and the air outlet (317) is located at the top of the circuit board to be processed and maintains a distance.