Circuit board etching device

Abstract

The utility model relates to the technical field of circuit board processing equipment, in particular to a circuit board etching device which comprises an etching box body, an observation channel is arranged on the front side of the etching box body, a detachable window assembly is arranged on the observation channel, a first conveying belt mechanism is arranged in the etching box body, and a second conveying belt mechanism is arranged in the etching box body. A first conveying belt mechanism is arranged on the outer side of the etching box body, a second conveying belt mechanism is arranged on the outer side of the etching box body, a vertically-lifting partition assembly is arranged between the first conveying belt mechanism and the second conveying belt mechanism, a cleaning assembly is arranged in the etching box body and is of a horizontally-arranged U-shaped structure, and the first conveying belt mechanism is located in an opening of the U-shaped cleaning assembly. The pneumatic assembly is matched with the cleaning assembly, the pneumatic assembly drives the cleaning assembly to move back and forth relative to the two sides of the first conveying belt mechanism, it can be ensured that etching liquid is evenly distributed on the surface of the circuit board body, and therefore it is ensured that the etching effect of the whole circuit board body is consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing equipment, and more specifically to a circuit board etching device. Background Art

[0002] In the field of electronic equipment manufacturing, circuit board etching is a key process. Its purpose is to form precise circuit patterns on the circuit board through chemical etching methods.

[0003] Traditional circuit board etching devices usually use a relatively simple etching method. For example, some existing devices only have fixed etching nozzles. When etching the circuit board, it is impossible to ensure that the etching liquid is evenly distributed on the surface of the circuit board, which easily leads to local excessive or insufficient etching. This not only makes it difficult to ensure the etching quality of the circuit board, the scrap rate is high, and the production cost is increased, but also the uneven etching may cause problems such as unstable circuit performance, affecting the quality and reliability of the entire electronic equipment. In addition, the traditional etching device is not efficient enough in the use of etching liquid. The etching liquid is often discharged after one use, resulting in waste of resources and environmental pollution. At the same time, there is a lack of effective protection and monitoring measures during the etching process, which makes it easy for the circuit board to slip and the etching liquid to splash, causing damage to the production environment and equipment, increasing equipment maintenance costs and safety risks, and is not conducive to operators to find problems and make adjustments in time, affecting production efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a circuit board etching device, which solves the problem of uneven distribution of etching liquid in traditional circuit board etching devices.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A circuit board etching device comprises an etching box, an observation channel is opened on the front side of the etching box, a detachable window assembly is arranged on the observation channel, a first conveyor belt mechanism is arranged inside the etching box, a second conveyor belt mechanism is arranged outside the etching box, a vertical lifting partition assembly is arranged between the first conveyor belt mechanism and the second conveyor belt mechanism, a cleaning assembly is arranged inside the etching box, the cleaning assembly is a horizontally arranged U-shaped structure, the first conveyor belt mechanism is located inside the opening of the U-shaped cleaning assembly, and the cleaning assembly and the circulation assembly arranged outside the etching box are connected by a The cleaning assembly comprises a lower water tank plate and an upper water tank plate respectively located on the upper and lower sides of the first conveyor belt mechanism, the upper surface of the lower water tank plate and the lower surface of the upper water tank plate are provided with multiple rows of spray pipes, the spray pipes are provided with a first nozzle for spraying water, the side surfaces of the lower water tank plate and the upper water tank plate are respectively provided with a second nozzle and a third nozzle inclined toward the first conveyor belt mechanism, the lower water tank plate and the upper water tank plate are connected by a connecting block, and a pneumatic assembly is provided on the inner side of the etching box body, which drives the cleaning assembly to reciprocate back and forth relative to the two sides of the first conveyor belt mechanism through the pneumatic assembly.

[0007] An adjusting cavity is provided inside the etching box, and the adjusting cavity is located at the lower end on the same side of the observation channel. The pneumatic component includes a mounting plate installed on the inner side of the adjusting cavity, and a threaded hole is provided on the mounting plate. A fixing bolt is threadedly connected in the threaded hole, and the fixing bolt connects the mounting plate and the corresponding wall surface on the inner side of the adjusting cavity. A first telescopic rod is installed on the mounting plate, and the adjacent ends of the first telescopic rod and the connecting block are fixedly connected with flange rings, and the two flange rings are threadedly fixed by fasteners, and the lower water tank plate can slide relative to the adjusting cavity.

[0008] A cavity is provided on one side of the etching box away from the observation channel as a driving cavity. The first conveyor belt mechanism includes a row of conveying roller rods rotatably connected between the etching box and the inside of the driving cavity. A circuit board body is placed on the conveying roller rods located inside the etching box. The conveying roller rods are located at one end of the driving cavity and are sleeved with connecting sleeves. The connecting sleeves are connected to each other through belt transmission. A motor is installed on the outside of the etching box to drive one group of conveying roller rods to rotate.

[0009] The second conveyor belt mechanism includes a conveyor platform body and a second motor arranged outside the conveyor platform body.

[0010] The partition assembly comprises a baffle plate body arranged at the side opening of the etching box body, and a second telescopic rod is arranged between the baffle plate body and the inner top of the etching box body.

[0011] The circulation component includes a high-pressure pump and a recovery box located outside the etching box. The output end of the high-pressure pump is connected to a water supply pipe, and the other end of the water supply pipe is respectively connected to a spray pipe, a second nozzle and a third nozzle through multiple groups of pipes. The input end of the high-pressure pump is connected to the inside of the recovery box through a pipe, and the recovery box is connected to the inner bottom surface of the etching box through the recovery pipe.

[0012] An observation window body with a matching size and shape is arranged at the opening of the observation channel, and a handle is installed on the outer surface of the observation window body.

[0013] The first telescopic rod and the second telescopic rod both adopt a pneumatic telescopic cylinder structure.

[0014] A door body is arranged at the inlet end of the etching box body.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The circuit board etching device, by arranging a pneumatic component to cooperate with a cleaning component, the pneumatic component drives the cleaning component to reciprocate back and forth relative to both sides of the first conveyor belt mechanism, which can ensure that the etching liquid is evenly distributed on the surface of the circuit board body, avoid local excessive or insufficient etching, thereby ensuring that the etching effect of the entire circuit board body is consistent, greatly improving the quality and yield of circuit board etching, reducing the generation of waste due to uneven etching, and effectively reducing production costs.

[0017] 2. The circuit board etching device is designed with a unique circulation component, including a high-pressure pump, a recovery box, a water pipe and a recovery pipe. The etching solution sprayed by the cleaning component can fall into the bottom of the etching box and then flow into the recovery box through the recovery pipe. A conventional filtering structure such as a filter screen can be set in the recovery box, and then the high-pressure pump extracts it and re-transports it to the cleaning component through the water pipe for recycling. This recycling method not only saves the use of etching solution, reduces material costs, but also reduces the discharge of waste liquid, meets environmental protection requirements, and is conducive to sustainable production.

[0018] 3. An observation channel and an observation window with a handle are set on the front side of the etching box, which is convenient for the operator to observe the working conditions in the etching box at any time, to find problems in time and make adjustments, thereby improving the controllability and operation convenience of the production process and reducing errors and losses caused by the inability to monitor in time.

[0019] 4. The partition assembly can effectively prevent the circuit board from accidentally being discharged from the etching box during the etching process and avoid the etching solution from splashing to the outside, ensuring the safety and cleanliness of the production environment, reducing the risk of corrosion and pollution to the equipment and the surrounding environment caused by solution splashing, extending the service life of the equipment and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model (first perspective);

[0021] Figure 2 It is a front cross-sectional view of the utility model;

[0022] Figure 3 It is a partial structure diagram of the utility model Figure 1 ;

[0023] Figure 4 It is a partial structure diagram of the utility model Figure 2 ;

[0024] Figure 5 It is a partial structure diagram of the utility model Figure 3 ;

[0025] Figure 6 This is a schematic diagram of the structure of the utility model (second viewing angle).

[0026] Legend:

[0027] 1. Etching box; 101. Observation channel; 102. Adjustment chamber; 103. Drive chamber; 104. Observation window body; 2. Conveying roller rod; 201. Connecting sleeve; 202. Belt; 203. Motor 1; 4. Lower water tank plate; 401. Upper water tank plate; 402. Spraying pipe; 403. First nozzle; 404. Second nozzle; 405. Third nozzle; 5. Mounting plate; 501. Fixing bolt; 502. First telescopic rod; 503. Flange ring; 504. Connecting block; 6. Water supply pipe; 601. High-pressure pump; 602. Recovery box; 603. Recovery pipe; 7. Second telescopic rod; 701. Baffle body; 8. Circuit board body; 9. Conveying platform; 901. Motor 2. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0029] Figure 1 to Figure 6 It is the best embodiment of the utility model, and the following Figure 1 to Figure 6 The utility model is further described.

[0030] A circuit board etching device comprises an etching box 1, wherein an observation channel 101 is provided on the front side of the etching box 1, a detachable window assembly is provided on the observation channel 101, a first conveyor belt mechanism is provided inside the etching box 1, a second conveyor belt mechanism is provided outside the etching box 1, a vertically lifting partition assembly is provided between the first conveyor belt mechanism and the second conveyor belt mechanism, a cleaning assembly is provided inside the etching box 1, the cleaning assembly is a horizontally arranged U-shaped structure, the first conveyor belt mechanism is located inside the opening of the U-shaped cleaning assembly, and the cleaning assembly is connected to a circulation assembly provided outside the etching box 1 through a pipeline, and the cleaning assembly comprises a partition assembly. The lower water tank plate 4 and the upper water tank plate 401 are respectively located on the upper and lower sides of the first conveyor belt mechanism, and multiple rows of spray pipes 402 are arranged on the upper surface of the lower water tank plate 4 and the lower surface of the upper water tank plate 401, and the spray pipes 402 are each provided with a first nozzle 403 for spraying water, and the side surfaces of the lower water tank plate 4 and the upper water tank plate 401 are respectively provided with a second nozzle 404 and a third nozzle 405 inclined toward the first conveyor belt mechanism, and the lower water tank plate 4 and the upper water tank plate 401 are connected by a connecting block 504, and a pneumatic component is arranged on the inner side of the etching box 1, and the cleaning component is driven by the pneumatic component to reciprocate back and forth relative to the two sides of the first conveyor belt mechanism.

[0031] The cleaning component is a spraying device for the etching liquid, and the circulation component provides the etching liquid for the cleaning component. The principle of etching is as follows: when the circuit board body 8 reaches the etching area (i.e. moves to the inner area of ​​the cleaning component), the first nozzle 403, the second nozzle 404 and the third nozzle 405 of the cleaning component start to spray the etching solution to the circuit board body 8, and at the same time, the first telescopic rod 502 of the pneumatic component is telescopic to drive the cleaning component to move back and forth in the horizontal direction, so that the etching solution is evenly distributed on the surface of the circuit board body 8 for etching.

[0032] When the circuit board body 8 on the first conveyor belt mechanism is subjected to etching spray treatment, the pneumatic component cooperates with the cleaning component to perform back and forth cleaning of the circuit board body 8. The back and forth movement can ensure that the etching liquid is evenly distributed on the surface of the circuit board body 8, avoiding local excessive or insufficient etching, and ensuring that the etching effect of the entire circuit board body 8 is consistent.

[0033] Specifically, an adjusting cavity 102 is provided inside the etching box 1, and the adjusting cavity 102 is located at the lower end on the same side of the observation channel 101. The pneumatic component includes a mounting plate 5 installed on the inner side of the adjusting cavity 102. A threaded hole is provided on the mounting plate 5, and a fixing bolt 501 is threadedly connected in the threaded hole. The fixing bolt 501 connects the mounting plate 5 and the corresponding wall surface inside the adjusting cavity 102. A first telescopic rod 502 is installed on the mounting plate 5, and the adjacent ends of the first telescopic rod 502 and the connecting block 504 are fixedly connected with flange rings 503. The two flange rings 503 are threadedly fixed by fasteners, and the lower water tank plate 4 can slide relative to the adjusting cavity 102.

[0034] A cavity is provided on the side of the etching box 1 away from the observation channel 101, which is a driving cavity 103. The first conveyor belt mechanism includes a row of conveying roller rods 2 rotatably connected between the etching box 1 and the driving cavity 103. A circuit board body 8 is placed on the conveying roller rods 2 located inside the etching box 1. The conveying roller rods 2 are located at one end of the driving cavity 103 and are sleeved with connecting sleeves 201. The connecting sleeves 201 are connected to each other through belts 202. A motor 203 for driving one group of conveying roller rods 2 to rotate is installed on the outside of the etching box 1.

[0035] The second conveyor belt mechanism includes a conveyor platform body 9 and a second motor 901 disposed outside the conveyor platform body 9. The second conveyor belt mechanism is a prior art, similar to the first conveyor belt mechanism, and also includes a plurality of roller rods driven by the second motor 901, and its detailed structure is not repeated here.

[0036] The partition assembly comprises a baffle plate body 701 arranged at the side opening of the etching box body 1 , and a second telescopic rod 7 is arranged between the baffle plate body 701 and the inner top of the etching box body 1 .

[0037] By providing a partition assembly between the first conveyor belt mechanism and the second conveyor belt mechanism between the inside and outside of the etching box 1, the second telescopic rod 7 drives the baffle plate body 701 to move downward between the first conveyor belt mechanism and the second conveyor belt mechanism. The main effect is that when the circuit board body 8 on the first conveyor belt mechanism inside the etching box 1 is etched by the cleaning assembly, the partition assembly located at the outer opening of the etching box 1 plays an interception effect to prevent the etching solution sprayed by the cleaning from splashing to the outside. In addition, it can also prevent the circuit board body 8 on the first conveyor belt mechanism inside the etching box 1 from being discharged from the inside of the etching box 1.

[0038] The circulation component includes a high-pressure pump 601 and a recovery box 602 located outside the etching box 1. The output end of the high-pressure pump 601 is connected to the water supply pipe 6. The other end of the water supply pipe 6 is respectively connected to the spray pipe 402, the second nozzle 404 and the third nozzle 405 through multiple groups of pipes. The input end of the high-pressure pump 601 is connected to the inside of the recovery box 602 through a pipeline, and the recovery box 602 is connected to the inner bottom surface of the etching box 1 through the recovery pipe 603. The waste liquid generated during the etching process falls into the bottom surface of the etching box 1 and flows into the recovery box 602 through the recovery pipe 603. The etching solution in the recovery box 602 is extracted by the high-pressure pump 601 and transported to the cleaning component for recycling through the water supply pipe 6, thereby continuously providing etching liquid for the etching process. The water supply pipe 6 adopts an elastic hose. Existing filtering structures such as a filter screen are arranged inside the recovery box 602.

[0039] In addition, the etching liquid in the recovery box 602 needs to be regularly tested to see if it meets the standards for etching treatment. If it no longer meets the requirements, the etching liquid needs to be replaced.

[0040] An observation window body 104 of a matching size and shape is provided at the opening of the observation channel 101, and a handle is installed on the outer surface of the observation window body 104. The observation window body 104 can be rotated and opened from the observation channel 101 by holding the handle.

[0041] The first telescopic rod 502 and the second telescopic rod 7 both adopt a pneumatic telescopic cylinder structure.

[0042] A door is provided at the inlet end of the etching box 1 , and after the circuit board body 8 is fed into the etching box 1 , the door is closed.

[0043] The working principle and use process of the utility model are as follows: first, the circuit board body 8 is placed on the conveying roller rod 2 of the first conveyor belt mechanism inside the etching box 1, the motor 203 is started, the conveying roller rod 2 starts to rotate under the drive of the belt 202, and the circuit board body 8 is conveyed to the etching area, and the door body is closed: when the circuit board body 8 reaches the etching area, it moves to the inner area of ​​the cleaning component, and the first nozzle 403, the second nozzle 404 and the third nozzle 405 of the cleaning component begin to spray the etching solution to the circuit board body 8, and at the same time, the first telescopic rod 502 of the pneumatic component is telescopic to drive the cleaning component to move back and forth in the horizontal direction, so that the etching solution is evenly distributed on the surface of the circuit board body 8 for etching. The waste liquid generated during the etching process falls into the bottom surface of the etching box 1 and flows into the recovery box 602 through the recovery pipe 603. The etching solution in the recovery box 602 is extracted by the high-pressure pump 601 and transported to the cleaning component again through the water supply pipe 6 for recycling. After etching is completed, the conveying roller rod 2 continues to rotate to convey the circuit board body 8 to the opening connected to the outside. At this time, the baffle plate body 701 of the partition assembly can be raised and lowered as needed. When raised, the circuit board body 8 can be smoothly conveyed to the conveying platform body 9 of the second conveyor belt mechanism. The roller rod on the conveying platform body 9 is driven by the second motor 901 to convey the etched circuit board body 8 to the subsequent process. During the whole process, the working conditions in the etching box 1 can be observed through the observation window body 104 of the observation channel 101.

Claims

1. A circuit board etching device, comprising an etching box (1), characterized in that: The etching box (1) has an observation channel (101) on its front side, and a detachable window assembly is provided on the observation channel (101). A first conveyor belt mechanism is provided inside the etching box (1), and a second conveyor belt mechanism is provided outside the etching box (1). A vertically lifting partition assembly is provided between the first conveyor belt mechanism and the second conveyor belt mechanism. A cleaning assembly is provided inside the etching box (1), and the cleaning assembly is a horizontally arranged U-shaped structure. The first conveyor belt mechanism is located inside the opening of the U-shaped cleaning assembly, and the cleaning assembly is connected to a circulation assembly provided outside the etching box (1) through a pipeline. The cleaning assembly includes drains located at upper and lower sides of the first conveyor belt mechanism. The box plate (4) and the upper water tank plate (401), the upper surface of the lower water tank plate (4) and the lower surface of the upper water tank plate (401) are all provided with a plurality of rows of spray pipes (402), the spray pipes (402) are all provided with a first nozzle (403) for spraying water, the side surfaces of the lower water tank plate (4) and the upper water tank plate (401) are respectively provided with a second nozzle (404) and a third nozzle (405) which are arranged obliquely toward the first conveyor belt mechanism, the lower water tank plate (4) and the upper water tank plate (401) are connected via a connecting block (504), and a pneumatic component is provided on the inner side of the etching box body (1), and the cleaning component is driven by the pneumatic component to reciprocate back and forth relative to the two sides of the first conveyor belt mechanism.

2. A circuit board etching device according to claim 1, characterized in that: The etching box (1) has an adjusting cavity (102) formed inside, the adjusting cavity (102) being located at the lower end of the same side as the observation channel (101), the pneumatic assembly comprising a mounting plate (5) mounted inside the adjusting cavity (102), a threaded hole formed on the mounting plate (5), a fixing bolt (501) being threadedly connected inside the threaded hole, the fixing bolt (501) connecting the mounting plate (5) and a corresponding wall surface inside the adjusting cavity (102), a first telescopic rod (502) being mounted on the mounting plate (5), the adjacent ends of the first telescopic rod (502) and the connecting block (504) being fixedly connected with flange rings (503), the two flange rings (503) being threadedly fixed by fasteners, and the lower water tank plate (4) being able to slide relative to the adjusting cavity (102).

3. A circuit board etching device according to claim 1, characterized in that: A cavity is provided on a side of the etching box (1) away from the observation channel (101) to serve as a driving cavity (103); a first conveyor belt mechanism comprises a row of conveying roller rods (2) rotatably connected between the etching box (1) and the inside of the driving cavity (103); a circuit board body (8) is placed on the conveying roller rods (2) located inside the etching box (1); a connecting sleeve (201) is sleeved on one end of the conveying roller rods (2) located in the driving cavity (103); the connecting sleeves (201) are connected to each other by a belt (202); and a motor (203) for driving one group of the conveying roller rods (2) to rotate is installed on the outside of the etching box (1).

4. A circuit board etching device according to claim 3, characterized in that: The second conveyor belt mechanism comprises a conveyor platform body (9) and a second motor (901) arranged outside the conveyor platform body (9).

5. A circuit board etching device according to claim 1, characterized in that: The partition assembly comprises a baffle plate body (701) arranged at a side opening of the etching box (1), and a second telescopic rod (7) is arranged between the baffle plate body (701) and the inner top of the etching box (1).

6. A circuit board etching device according to claim 1, characterized in that: The circulation component comprises a high-pressure pump (601) and a recovery box (602) located outside the etching box (1); the output end of the high-pressure pump (601) is connected to a water supply pipe (6); the other end of the water supply pipe (6) is respectively connected to a spray pipe (402), a second nozzle (404) and a third nozzle (405) through a plurality of pipes; the input end of the high-pressure pump (601) is connected to the inside of the recovery box (602) through a pipe; the recovery box (602) and the inner bottom surface of the etching box (1) are connected through a recovery pipe (603).

7. A circuit board etching device according to claim 1, characterized in that: An observation window body (104) of matching size and shape is provided at the opening of the observation channel (101), and a handle is installed on the outer surface of the observation window body (104).

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