PCB circuit board etching device

Abstract

The utility model relates to a kind of PCB circuit board etching device in etching processing technical field, including box and pivot, pivot is equipped with etching support, box side is equipped with the driving element matched with pivot, several stations are arranged around on etching support, the four corners of station are equipped with support block, support block two ends diagonal place is equipped with limit baffle and the support plate that can slide up and down respectively, the both sides of etching support are equipped with the pressing assembly matched with support plate, box is equipped with the transmission part matched with pressing assembly.The utility model is rotated by the cooperation of driving element and pivot, drives circuit board and etching liquid to be contacted evenly, completes immersion etching.In the process of rotation, by the cooperation of limit baffle, support plate, pressing assembly and transmission part, circuit board is fixed, prevent circuit board from displacement.In addition, by the support plate that can slide up and down, the circuit board of different thickness can be adapted to, to improve the versatility and stability of etching device.

Description

Technical Field

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

[0002] Printed circuit boards (PCBs) are an indispensable component of electronic devices. They enable the connection and functional integration of various electronic components, replacing complex wiring, simplifying the structure of electronic devices, reducing size, and improving device stability. Etching technology is particularly crucial in the PCB manufacturing process. Etching precisely removes unwanted copper layers from the PCB, creating the desired circuit patterns on the surface to achieve the circuit's function. Etching methods include spray etching and immersion etching, among others. Immersion etching is widely used by small and medium-sized PCB manufacturers due to its ease of operation and low cost.

[0003] Existing PCB etching devices immerse the circuit board in an etching solution by placing it between two sets of conveyor rollers. However, during the conveying process, friction and vibration of the conveyor rollers can easily cause the copper layer on the circuit board surface to peel off or the pattern to be damaged, thus affecting the quality and precision of the circuit board. Therefore, this invention proposes a rotary PCB etching device. Summary of the Invention

[0004] This invention provides a PCB circuit board etching device that solves the problem of circuit board damage during the etching process in existing etching devices by using a rotary etching bracket, support plate, pressing assembly and transmission components.

[0005] The objective of this utility model is achieved through the following means:

[0006] A PCB circuit board etching apparatus includes a housing and a rotating shaft rotatably mounted inside the housing. An etching bracket is mounted on the rotating shaft. A driving component that cooperates with the rotating shaft is provided on one side of the housing. Several workstations are arranged around the etching bracket. Support blocks are provided at the four corners of each workstation. Limiting edges and vertically sliding support plates are respectively provided at the diagonal ends of the support blocks. Pressing assemblies that cooperate with the support plates are provided on both sides of the etching bracket. A transmission component that cooperates with the pressing assemblies is provided in the housing.

[0007] Furthermore, the pressing assembly includes a mounting plate, a pressing block, and a transmission rod that cooperates with the transmission component. The mounting plate is disposed on both sides of the etching bracket, and the transmission rod is slidably mounted on one side of the mounting plate by a first spring. The two ends of the transmission rod cooperate with the pressing block and the transmission component, respectively.

[0008] Furthermore, one end of the pressure block is provided with a guide portion.

[0009] Furthermore, the transmission component includes a fixed plate and a guide ring for cooperating with the transmission rod. The guide ring is located at one end of the fixed plate, and both sides of the fixed plate are provided with outwardly extending fixed blocks. Both sides of the housing are provided with sliding brackets that cooperate with the fixed blocks.

[0010] Furthermore, the lower end of the support plate is provided with a limiting post, the support block is provided with a limiting hole that cooperates with the limiting post, a second spring is provided in the limiting hole, the two ends of the second spring abut against the limiting hole and one end of the limiting post respectively, and a limiting block is provided at the other end of the limiting post.

[0011] Furthermore, the limiting stop edge is provided with a limiting groove that cooperates with the support plate, and the support plate is provided with a limiting block that cooperates with the limiting groove.

[0012] Furthermore, one end of the support block is provided with a sliding block, and the two sides of the etching bracket are symmetrically provided with sliding grooves that cooperate with the sliding block.

[0013] Furthermore, the etching support consists of two rotating plates, which are symmetrically arranged at both ends of the rotating shaft.

[0014] Furthermore, one end of the rotating plate is provided with a positioning pin, and the rotating shaft is provided with a plurality of pin holes that cooperate with the positioning pin.

[0015] The beneficial effects of this invention are as follows: The drive component and the rotating shaft work together to rotate the etching support, causing the circuit board to come into uniform contact with the etching solution, thus completing the immersion etching. During rotation, the circuit board is fixed in place by the cooperation of the limiting baffle, support plate, pressing assembly, and transmission component, preventing displacement. Furthermore, the vertically sliding support plate can accommodate circuit boards of different thicknesses, thereby improving the versatility and stability of the etching device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a PCB circuit board etching device according to the present invention;

[0017] Figure 2 for Figure 1 Enlarged diagram of A in the middle;

[0018] Figure 3 This is a cross-sectional view of a PCB circuit board etching device according to the present invention;

[0019] Figure 4 for Figure 3 Enlarged diagram of B in the middle;

[0020] Figure 5 This is an exploded view of the support block in this utility model;

[0021] Figure 6 This is a schematic diagram of the transmission component in this utility model;

[0022] The reference numerals in the figure are as follows: 1-box body, 11-sliding bracket, 2-rotating shaft, 21-pin hole, 3-etched bracket, 31-sliding groove, 32-rotating plate, 33-positioning pin, 4-driving component, 5-support block, 51-limiting stop, 511-limiting groove, 52-support plate, 521-limiting block, 53-limiting post, 531-limiting stop, 54-limiting hole, 55-second spring, 56-sliding block, 6-pressing assembly, 61-mounting plate, 62-pressing block, 621-guide part, 63-transmission rod, 64-first spring, 7-transmission component, 71-fixing plate, 711-fixing block, 72-guide ring. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment, refer to Figure 1 - Figure 6 The PCB circuit board etching device specifically implemented therein includes a housing 1 and a rotating shaft 2 rotatably installed inside the housing 1. An etching bracket 3 is installed on the rotating shaft 2. A driving component 4 that cooperates with the rotating shaft 2 is provided on one side of the housing 1. Several workstations are arranged around the etching bracket 3. Support blocks 5 are provided at the four corners of each workstation. Limiting stops 51 and sliding support plates 52 are respectively provided at the diagonal ends of the support blocks 5. Pressing components 6 that cooperate with the support plates 52 are provided on both sides of the etching bracket 3. A transmission component 7 that cooperates with the pressing components 6 is provided in the housing 1.

[0025] The lower end of the housing 1 is provided with an inlet and an outlet. The inlet and outlet are respectively connected to an external etching solution circulation system. The external etching solution circulation system enables continuous flow of the etching solution, ensuring uniform etching effect.

[0026] In use, the PCB circuit board is placed on the workstation, and the edges of the PCB circuit board are fixed by the limiting edges 51 on the four corner support blocks 5 of the workstation to prevent the circuit board from sliding horizontally. At the same time, the PCB circuit board is lifted upward by the vertically sliding support plate 52 to ensure that it can make close contact with the pressure component 6. When the etching bracket 3 rotates, as the pressure component 6 contacts the transmission component 7 at different positions, the pressure component 6 cooperates with the support plate 52 to complete the clamping and releasing of the PCB circuit board, realizing the stable fixation and precise etching of the circuit board during the etching process.

[0027] The pressing assembly 6 includes a mounting plate 61, a pressing block 62, and a transmission rod 63 that cooperates with the transmission component 7. The mounting plate 61 is located on both sides of the etching bracket 3. The transmission rod 63 is slidably mounted on one side of the mounting plate 61 via a first spring 64. Both ends of the transmission rod 63 cooperate with the pressing block 62 and the transmission component 7, respectively. One end of the pressing block 62 is provided with a guide portion 621. Guide rods are provided on both sides of the pressing block 62. Guide holes that cooperate with the guide rods are provided on both sides of the mounting plate 61. One end of the guide rod is provided with a limiting nut. A third spring is sleeved on the outside of the guide rod. Both ends of the third spring abut against the limiting nut and the mounting plate 61, respectively. The other end of the guide rod is connected and cooperates with the pressing block 62.

[0028] Mounting plate 61 is fixedly mounted to both sides of etching bracket 3 by bolts or other means. The first spring 64 and the third spring ensure that one end of transmission rod 63 is always in close contact with transmission component 7, thereby ensuring that pressure block 62 can move flexibly as it contacts transmission component 7 at different positions, achieving precise pressing and releasing of PCB circuit board by pressing component 6. Guide part 621 adopts a beveled or arc surface design to reduce friction with circuit board. When pressure block 62 moves towards circuit board, guide part 621 can gradually guide the edge of circuit board to the pressing position, avoiding collision or squeezing between pressure block 62 and the edge of circuit board, which could lead to deformation or damage to PCB circuit board. Through the cooperation of guide rod and guide hole, it is ensured that pressure block 62 maintains a stable trajectory during movement, further improving the accuracy of pressing and releasing.

[0029] The transmission component 7 includes a fixed plate 71 and a guide ring 72 for cooperating with the transmission rod 63. The guide ring 72 is located at one end of the fixed plate 71. Both sides of the fixed plate 71 have outwardly extending fixed blocks 711, and both sides of the housing 1 have sliding brackets 11 that cooperate with the fixed blocks 711. The guide ring 72 is fixedly mounted on the fixed plate 71. The fixed plate 71 has a connecting sleeve that cooperates with the etching bracket 3. The connecting sleeve ensures that the transmission component 7 is positioned at a specified distance on one side of the etching bracket 3, thereby ensuring precise cooperation between the transmission rod 63 and the guide ring 72, and achieving stable operation of the transmission component 7 during the etching process. The cooperation between the fixed blocks 711 on both sides and the sliding brackets 11 on both sides of the housing 1 restricts the rotation of the transmission component 7, preventing it from rotating during the etching process and thus preventing the pressure block 62 from pressing or releasing the PCB circuit board.

[0030] The contact surface between the guide ring 72 and the transmission rod 63 adopts a ring-shaped design with a height difference. When the contact surface between the transmission rod 63 and the guide ring 72 contacts at different height positions, it can drive the pressure block 62 to slide, thereby completing the pressing and releasing action.

[0031] The lower end of the support plate 52 is provided with a limiting post 53, and the support block 5 is provided with a limiting hole 54 that cooperates with the limiting post 53. A second spring 55 is provided in the limiting hole 54, and the two ends of the second spring 55 abut against the limiting hole 54 and one end of the limiting post 53, respectively. The other end of the limiting post 53 is provided with a limiting stop 531. Through the cooperation of the limiting hole 54, the limiting post 53, and the second spring 55, the support plate 52 slides upward, thereby making the circuit board fit against the pressure block 62 and completing the pressing action. The setting of the limiting stop 531 prevents the support plate 52 from sliding excessively, ensuring that the support plate 52 moves stably within a specific range, and further enhancing the overall stability of the pressing assembly 6.

[0032] The limiting stop 51 is provided with a limiting groove 511 that mates with the support plate 52, and the support plate 52 is provided with a limiting block 521 that mates with the limiting groove 511. The limiting groove 511 and the limiting block 521 prevent the support plate 52 from shifting during the pressing process, ensuring that the pressure block 62 always applies force evenly, and avoiding situations such as the PCB circuit board lifting due to uneven force, which could lead to collision with the pressure block 62 and cause damage or deformation.

[0033] One end of the support block 5 is equipped with a sliding block 56, and the two sides of the etched bracket 3 are symmetrically provided with sliding grooves 31 that cooperate with the sliding block 56. Through the cooperation of the sliding block 56 and the sliding groove 31, the distance between two adjacent support blocks 5 can be adjusted to accommodate PCB circuit boards of different widths and ensure a tight clamping effect. One end of the sliding block 56 is equipped with a fixing nut. When it is necessary to adjust the distance between the support blocks 5, simply loosen the fixing nut, and the sliding block 56 can move freely within the sliding groove 31, thereby adjusting the distance between the support blocks 5. After adjusting to the appropriate position, tighten the fixing nut again to complete the fixation of the support block 5.

[0034] The etching support 3 consists of two rotating plates 32, symmetrically positioned at both ends of a rotating shaft 2. One end of each rotating plate 32 has a positioning pin 33, and the rotating shaft 2 has several pin holes 21 that mate with the positioning pins 33. Through the engagement of the positioning pins 33 and the pin holes 21, the rotating plates 32 are fixed to the rotating shaft 2, thus rotating synchronously with the rotation of the shaft 2, ensuring the stability of the rotating plates 32 during the etching process. By adjusting the engagement of different pin holes 21 with the positioning pins 33, the spacing between the rotating plates 32 can be adjusted to accommodate PCBs of different lengths, thereby improving the versatility and flexibility of the etching apparatus.

[0035] The beneficial effects of this invention are as follows: The drive component 4, in conjunction with the rotating shaft 2, causes the etching support 3 to rotate, bringing the circuit board into uniform contact with the etching solution, thus completing the immersion etching. During rotation, the circuit board is fixed in place by the cooperation of the limiting stop 51, the support plate 52, the pressing assembly 6, and the transmission component 7, preventing displacement. Furthermore, the vertically sliding support plate 52 can accommodate circuit boards of different thicknesses, thereby improving the versatility and stability of the etching device.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A PCB circuit board etching apparatus, characterized in that, The device includes a housing (1) and a rotating shaft (2) rotatably mounted inside the housing (1). An etching bracket (3) is mounted on the rotating shaft (2). A driving component (4) that cooperates with the rotating shaft (2) is provided on one side of the housing (1). Several workstations are arranged around the etching bracket (3). Support blocks (5) are provided at the four corners of each workstation. Limiting flanges (51) and sliding support plates (52) are provided at the diagonal ends of the support blocks (5). Pressing components (6) that cooperate with the support plates (52) are provided on both sides of the etching bracket (3). A transmission component (7) that cooperates with the pressing components (6) is provided in the housing (1).

2. The PCB circuit board etching apparatus according to claim 1, characterized in that: The pressing assembly (6) includes a mounting plate (61), a pressing block (62), and a transmission rod (63) that cooperates with the transmission component (7). The mounting plate (61) is located on both sides of the etching bracket (3). The transmission rod (63) is slidably mounted on one side of the mounting plate (61) by a first spring (64). The two ends of the transmission rod (63) cooperate with the pressing block (62) and the transmission component (7), respectively.

3. The PCB circuit board etching apparatus according to claim 2, characterized in that: One end of the pressure block (62) is provided with a guide part (621).

4. The PCB circuit board etching apparatus according to claim 2 or 3, characterized in that: The transmission component (7) includes a fixed plate (71) and a guide ring (72) for cooperating with the transmission rod (63). The guide ring (72) is located at one end of the fixed plate (71). Both sides of the fixed plate (71) are provided with outwardly extending fixed blocks (711). Both sides of the housing (1) are provided with sliding brackets (11) that cooperate with the fixed blocks (711).

5. The PCB circuit board etching apparatus according to claim 1, characterized in that: The lower end of the support plate (52) is provided with a limiting post (53), and the support block (5) is provided with a limiting hole (54) that cooperates with the limiting post (53). A second spring (55) is provided in the limiting hole (54). The two ends of the second spring (55) abut against the limiting hole (54) and one end of the limiting post (53), respectively. The other end of the limiting post (53) is provided with a limiting stop (531).

6. The PCB circuit board etching apparatus according to claim 1, characterized in that: The limiting stop (51) is provided with a limiting groove (511) that cooperates with the support plate (52), and the support plate (52) is provided with a limiting block (521) that cooperates with the limiting groove (511).

7. The PCB circuit board etching apparatus according to claim 1, characterized in that: One end of the support block (5) is provided with a sliding block (56), and the two sides of the etching bracket (3) are symmetrically provided with sliding grooves (31) that cooperate with the sliding block (56).

8. A PCB circuit board etching apparatus according to claim 1 or 7, characterized in that: The etching support (3) consists of two rotating plates (32), which are symmetrically arranged at both ends of the rotating shaft (2).

9. The PCB circuit board etching apparatus according to claim 8, characterized in that: One end of the rotating plate (32) is provided with a positioning pin (33), and the rotating shaft (2) is provided with a plurality of pin holes (21) that cooperate with the positioning pin (33).

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