Printed circuit board etching device

Abstract

The utility model relates to the technical field of circuit board etching, in particular to a printed circuit board etching device. According to the technical scheme, supporting frames are erected on the two sides of an etching groove, a rotating disc is erected above the etching groove through the supporting frames, a transmission rod is arranged at one end of the rotating disc, the rotating disc is in transmission connection with a connecting pin through a connecting rod, and a circuit board body is hung in the etching groove through a fixing clamp, the connecting rod, the rotating disc and the connecting pin. After a plurality of circuit board bodies are clamped and fixed through the fixing clamps, the fixing clamps provided with the circuit board bodies are spliced and assembled through the connecting pins. According to the utility model, the circuit board body can move up and down in the etching groove, so that the washing effect of etching liquid on the surface of the circuit board is improved, and the etching efficiency and the etching quality are improved. Meanwhile, the device has the advantages of being simple in structure, convenient to operate, high in applicability and the like, and the etching production requirements of circuit boards with different scales and different requirements can be met.

Description

Technical Field

[0001] This utility model relates to the field of circuit board etching technology, and specifically to a printed circuit board etching device. Background Technology

[0002] Etching is a crucial step in the printed circuit board (PCB) manufacturing process. Problems during etching can affect the final quality of the board, especially when producing PCBs with fine textures or high precision. Etching methods generally include immersion etching, bubbling etching, splash etching, and spray etching.

[0003] A search revealed that patent CN202323422552.5 discloses a printed circuit board etching device. While this device, in use, has a stirring etching mechanism located above the main body and an auxiliary mechanism located below it, the main body includes a main unit, a fixed support frame, and a recovery assembly. The fixed support frame is fixedly installed on the upper end of the main unit, and the recovery assembly is also fixedly installed on the upper side of the main unit. The recovery assembly includes a printed circuit board placement plate, a liquid drop groove, a recovery groove, a connecting groove, and a liquid outlet pipe. The printed circuit board placement plate is fixedly installed on the upper end of the main unit. This printed circuit board etching device, by installing the main body, allows for the collection of excess etching solution after etching the circuit board, preventing waste and significantly saving costs. However, the device can only process a limited number of circuit boards simultaneously, limiting its production efficiency. In large-scale production environments, more equipment or longer processing times are needed to meet production demands. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a printed circuit board etching device, which solves the problems mentioned in the background art.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0006] A printed circuit board etching apparatus includes an etching tank in which a circuit board body is placed.

[0007] Support frames are installed on both sides of the etching tank, and a turntable is installed above the etching tank via the support frames. One end of the turntable is equipped with a transmission rod. The turntable is connected to a connecting pin via an eccentric rod and a connecting rod. The connecting pin is connected to a fixing clip for assembly. A circuit board body is installed between the fixing clips. The circuit board body is suspended in the etching tank by the fixing clips, connecting rod, turntable, and connecting pin. After multiple circuit board bodies are fixed by fixing clips, the fixing clips with the circuit board bodies are spliced ​​and assembled by the connecting pin.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the fixing clip is connected and fixed to the side plate by bolts and nuts.

[0010] The beneficial effects of adopting the above-mentioned further solutions are:

[0011] The use of bolts and nuts ensures a secure and reliable connection between the mounting clips and the side plate, preventing loosening. This connection method is simple and easy to implement, facilitating installation and disassembly, and also making it convenient for replacing and maintaining the circuit board itself. Furthermore, bolts and nuts are standard parts, readily available, and inexpensive, helping to reduce overall manufacturing costs.

[0012] Furthermore, the connecting pin is provided with a support post, the support post is provided with a prism, the end of the prism facing away from the support post is provided with a threaded rod, and the support post is provided with a threaded hole. Two adjacent connecting pins are connected through the threaded rod and the threaded hole.

[0013] The beneficial effects of adopting the above-mentioned further solutions are:

[0014] This design allows for easy threaded connection between the connecting pins, resulting in a secure connection that is also easy to disassemble and reassemble. The support pillars and prisms enhance the strength and stability of the connecting pins, ensuring the entire assembly remains stable during etching. Furthermore, the spacing between the circuit board bodies can be easily adjusted by changing the position of the threaded rods and threaded holes to accommodate circuit boards of different sizes.

[0015] Furthermore, the fixing card has a through hole, and the shape and size of the through hole are adapted to the prism. The connecting pin is connected and fixed to the fixing card through the prism.

[0016] The beneficial effects of adopting the above-mentioned further solutions are:

[0017] This design ensures a tighter and more stable connection between the connecting pin and the retaining clip, preventing them from easily falling off. Simultaneously, the compatibility of the prism and through-hole ensures the accurate positioning of the connecting pin on the retaining clip, thereby guaranteeing the stability of the circuit board body during the etching process. Furthermore, this connection method facilitates the replacement and maintenance of the circuit board body; simply removing the connecting pin is sufficient.

[0018] Furthermore, the threaded rod of the connecting pin is connected and fixed to the side plate via a connecting seat.

[0019] The beneficial effects of adopting the above-mentioned further solutions are:

[0020] The connector design further enhances the stability and robustness of the connection between the connecting pin and the side plate. As an intermediate component, the connector distributes the pressure of the connecting pin on the side plate, reducing deformation and damage. Simultaneously, the connector provides additional fixing points, making the entire device more stable and reliable during the etching process.

[0021] Furthermore, the fixing clips are diagonally distributed at the corners of the circuit board body, and the fixing clips are limited by the side plates, thereby clamping and fixing the circuit board body.

[0022] The beneficial effects of adopting the above-mentioned further solutions are:

[0023] This design ensures the circuit board is evenly clamped and fixed during etching, preventing uneven etching caused by shaking or displacement. The fixing clips are diagonally distributed at the corners, forming a stable triangular support structure and increasing the stability of the circuit board. Simultaneously, the side plates limit the positioning of the fixing clips, further ensuring the stability of the circuit board during etching, thereby improving etching quality and efficiency.

[0024] This invention provides a printed circuit board etching device. It has the following advantages:

[0025] The circuit board body can move up and down within the etching tank via a drive mechanism consisting of a turntable, eccentric rod, connecting rod, and connecting pin. This dynamic etching method helps the etching solution to more thoroughly wash the surface of the circuit board, thereby improving etching efficiency.

[0026] The connecting pin is equipped with a support post, which can effectively prevent two adjacent circuit boards from contacting each other, avoiding uneven etching or damage caused by contact, and ensuring etching quality.

[0027] The connecting pins, with their threaded rods and threaded holes, allow adjacent pins to be easily joined together, supporting flexible assembly of multiple circuit board bodies. Furthermore, the retaining clips, secured to the side plates with bolts and nuts, further enhance assembly stability and flexibility.

[0028] The fixing clips are diagonally distributed at the corners of the circuit board body and are limited by the side plates. This design allows the circuit board body to be effectively clamped and fixed, avoiding uneven etching caused by shaking or displacement during the etching process. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the main appearance of this utility model;

[0032] Figure 2 This is a front view exploded structural diagram of the circuit board body of this utility model in the suspended state;

[0033] Figure 3 This is a top-down exploded view of the circuit board body of this utility model in a suspended state.

[0034] Figure 4 This is a front view exploded view of the fixing card of this utility model;

[0035] Figure 5 This is a rear-view exploded view of the fixing card structure of this utility model.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Circuit board body; 10. Connector; 2. Fixing clip; 3. Connecting rod; 4. Support frame; 5. Turntable; 501. Eccentric rod; 6. Transmission rod; 7. Etching groove; 8. Side plate; 9. Connecting pin; 901. Threaded rod; 902. Prism; 903. Support column; 904. Threaded hole. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1 to 5 As shown, the embodiments provided by this utility model are as follows: Example

[0040] A printed circuit board etching apparatus includes an etching tank 7, in which a circuit board body 1 is placed. Support frames 4 are mounted on both sides of the etching tank 7, and a turntable 5 is mounted above the etching tank 7 via the support frames 4. A transmission rod 6 is provided at one end of the turntable 5. The turntable 5 is connected to a connecting pin 9 via an eccentric rod 501 and a connecting rod 3. When the turntable 5 rotates, the connecting pin 9 moves up and down within the etching tank 7 via the eccentric rod 501 and the connecting rod 3, thereby causing the circuit board body 1, which is fixed to the connecting pin 9 by a fixing clip 2, to move up and down within the etching tank 7. The etching solution within the etching tank 7 continuously washes over the circuit board body 1. To increase etching efficiency, the connecting pin 9 is equipped with a support post 903. The support post 903 supports two adjacent circuit board bodies 1, preventing them from contacting each other and affecting the etching effect. The support post 903 has a prism 902, with a threaded rod 901 at the end of the prism 902 facing away from the support post 903. The support post 903 has a threaded hole 904. Two adjacent connecting pins 9 are connected through the threaded rod 901 and the threaded hole 904. This design allows the connecting pins 9 to be easily connected by threads, ensuring a strong connection and facilitating disassembly and reassembly. The design of the support post 903 and the prism 902 increases the strength and stability of the connecting pins 9, enabling the entire device to remain stable during the etching process. Furthermore, by adjusting the positions of the threaded rod 901 and the threaded hole 904, the spacing between the circuit board bodies 1 can be easily adjusted to accommodate circuit boards of different sizes. The fixing clip 2 has through holes, the shape and size of which are adapted to the prism 902. The connecting pin 9 is connected and fixed to the fixing clip 2 via the prism 902. This design makes the connection between the connecting pin 9 and the fixing clip 2 tighter and more stable, preventing it from easily falling off. Simultaneously, due to the compatibility between the prism 902 and the through hole, the position of the connecting pin 9 on the fixing clip 2 is ensured to be accurate, thereby ensuring the stability of the circuit board body 1 during the etching process. In addition, this connection method facilitates the replacement and maintenance of the circuit board body 1; only the connecting pin 9 needs to be removed. The connecting pin 9 is connected and assembled with the fixing clip 2, and the circuit board body 1 is installed between the fixing clips 2. The circuit board body 1 is suspended in the etching tank 7 via the fixing clip 2, connecting rod 3, turntable 5, and connecting pin 9. Example

[0041] To facilitate the assembly of multiple circuit board bodies 1, for example, such as Figures 1 to 5As shown, this utility model also includes: after multiple circuit board bodies 1 are fixed by fixing clips 2, the fixing clips 2 on which the circuit board bodies 1 are installed are assembled by connecting pins 9. The fixing clips 2 are connected and fixed to the side plate 8 by bolts and nuts. This fastening method of bolts and nuts can ensure that the connection between the fixing clips 2 and the side plate 8 is firm and reliable and not easy to loosen. This connection method is simple and easy to implement, convenient for installation and disassembly, and also facilitates the replacement and maintenance of the circuit board body 1. In addition, bolts and nuts are standard parts, easy to obtain and low in cost, which helps to reduce the overall manufacturing cost. The threaded rod 901 of the connecting pin 9 is connected and fixed to the side plate 8 by the connecting seat 10. The design of the connecting seat 10 can further increase the stability and firmness of the connection between the connecting pin 9 and the side plate 8. As an intermediate component, the connecting seat 10 can distribute the pressure of the connecting pin 9 on the side plate 8, reducing the deformation and damage of the side plate 8. Meanwhile, the connector 10 also provides additional fixing points, making the entire device more stable and reliable during the etching process. The fixing clips 2 are diagonally distributed at the corners of the circuit board body 1, and the fixing clips 2 are limited by the side plate 8, thereby clamping and fixing the circuit board body 1. This design ensures that the circuit board body 1 is evenly clamped and fixed during the etching process, avoiding uneven etching caused by shaking or displacement. The diagonal distribution of the fixing clips 2 at the corners forms a stable triangular support structure, increasing the stability of the circuit board body 1. At the same time, the side plate 8 limits the fixing clips 2, further ensuring the positional stability of the circuit board body 1 during the etching process, thereby improving etching quality and efficiency.

[0042] Working principle:

[0043] The circuit board body 1 is secured by the fixing clips 2 and assembled together using the connecting pins 9. The assembled circuit board is then placed into the etching tank 7, and the positions of the fixing clips 2 and connecting pins 9 are adjusted to ensure that the circuit board is evenly etched by the etching solution.

[0044] The turntable 5 in the device rotates via a transmission rod 6 (possibly driven by a motor or other power source). As the turntable 5 rotates, it drives the connecting pin 9 to move up and down within the etching tank 7 via an eccentric rod 501 and a connecting rod 3. The design of the eccentric rod 501 allows the rotation of the turntable 5 to be converted into the up-and-down movement of the connecting pin 9. The circuit board body 1 is fixed to the connecting pins 9 by a fixing clip 2. When the connecting pins 9 move up and down, they drive the circuit board body 1 to move up and down within the etching tank 7.

[0045] The etching tank 7 contains etching solution, which typically contains chemical components such as copper chloride, hydrogen peroxide, and hydrochloric acid, used to chemically react with the copper layers on the circuit board. As the circuit board body 1 moves up and down within the etching tank 7, the etching solution continuously washes over the board surface. This washing action helps the etching solution distribute more evenly across the board surface, thereby improving etching efficiency. Simultaneously, the chemical components in the etching solution undergo an oxidation-reduction reaction with the copper layers on the circuit board, corroding away any unwanted copper layers.

[0046] The fixing clip 2 is used to fix the circuit board body 1 onto the connecting pin 9, ensuring that the circuit board will not fall off or shift during the etching process. The connecting pin 9, through its threaded rod 901 and threaded hole 904 design, can easily connect multiple fixing clips 2 and the circuit board body 1 to form an integrated structure.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] 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. A printed circuit board etching apparatus, comprising an etching tank (7), wherein a circuit board body (1) is placed in the etching tank (7), characterized in that: Support frames (4) are provided on both sides of the etching tank (7). A turntable (5) is provided above the etching tank (7) via the support frames (4). A transmission rod (6) is provided at one end of the turntable (5). The turntable (5) is connected to the connecting pin (9) via an eccentric rod (501) and a connecting rod (3). The connecting pin (9) is connected to the fixing clip (2). A circuit board body (1) is installed between the fixing clips (2). The circuit board body (1) is suspended in the etching tank (7) via the fixing clips (2), the connecting rod (3), the turntable (5), and the connecting pin (9). After multiple circuit board bodies (1) are fixed by the fixing clips (2), the fixing clips (2) with the circuit board bodies (1) are spliced ​​and assembled via the connecting pin (9).

2. The printed circuit board etching device of claim 1, wherein: The fixing clip (2) is connected and fixed to the side plate (8) by bolts and nuts.

3. The printed circuit board etching device of claim 1, wherein: The connecting pin (9) is provided with a support post (903), and a prism (902) is provided on the support post (903). A threaded rod (901) is provided at one end of the prism (902) away from the support post (903). A threaded hole (904) is provided on the support post (903). Two adjacent connecting pins (9) are connected by the threaded rod (901) and the threaded hole (904).

4. The printed circuit board etching device of claim 1, wherein: The fixing card (2) has a through hole, and the shape and size of the through hole are adapted to the prism (902). The connecting pin (9) is connected and fixed to the fixing card (2) through the prism (902).

5. The printed circuit board etching device of claim 1, wherein: The threaded rod (901) of the connecting pin (9) is connected and fixed to the side plate (8) through the connecting seat (10).

6. The printed circuit board etching device of claim 1, wherein: The fixing clips (2) are diagonally distributed at the corners of the circuit board body (1), and the fixing clips (2) are limited by the side plate (8) to clamp and fix the circuit board body (1).

Images