Circuit board etching device

Abstract

The utility model discloses a circuit board etching device, which relates to the technical field of circuit boards and comprises a main body unit, a guide fixing unit, a cleaning unit, an etching unit and a drying unit, the guide fixing unit, the cleaning unit, the etching unit and the drying unit are arranged in the main body unit, and the cleaning unit, the etching unit and the drying unit are all located above the guide fixing unit. The guiding and fixing unit comprises a fixing base installed on the side wall of the main body unit, an electric push cylinder installed on the top of the fixing base, a connecting plate installed at the telescopic end of the electric push cylinder and a guiding piece arranged on the inner side of the connecting plate, wherein the telescopic end of the electric push cylinder penetrates into the main body unit. According to the circuit board etching device provided by the utility model, the circuit board is prevented from sliding in the conveying process through the arranged fixing unit and cleaning unit, and the uniform spraying of etching liquid is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board etching device. Background Art

[0002] Etching is an important link in the production process of circuit boards. Its success or failure is related to the subsequent processes of making circuit boards. Etching is mainly an oxidation-reduction reaction between etching liquid and metal foil. The main function of the etching device is to etch the circuit board that has been coated with a protective film on the surface of the circuit pattern, and to etch away the exposed copper foil outside the circuit pattern of the circuit board to form a complete circuit.

[0003] After searching the publication (announcement) number: CN217135791U, an etching device for etching a high-frequency printed circuit board is disclosed, including a box, a cleaning structure, an etching structure and a waste gas collection structure. The bottom inner wall of the box is provided with a parallel belt conveyor; the top inner wall of the box is provided with a first nozzle, a first telescopic motor, a third nozzle, a second telescopic motor, a second nozzle and a third telescopic motor in sequence from the starting end to the end of the parallel belt conveyor; the cleaning structure includes a water storage tank, a first water outlet pipe and a second water outlet pipe; the etching structure includes an etching liquid tank and a liquid outlet pipe; the waste gas collection structure includes a gas purifier and an air suction pipe. It can clean the circuit board before and after etching, eliminate the influence of dust accumulation on the circuit board on etching, and remove the residual etching liquid on the circuit board. At the same time, it can collect and treat a large amount of harmful gases generated during the etching process to avoid environmental pollution.

[0004] Although the above scheme eliminates the influence of dust accumulation on the circuit board on etching and can promptly remove the residual etching liquid on the circuit board, it does not restrict the left and right positions of the circuit board during the transportation process, so that the circuit board may shake left and right, and the etching liquid cannot be evenly sprayed on the circuit board, affecting the etching effect. For this reason, we propose a circuit board etching device. Utility Model Content

[0005] The main purpose of the utility model is to provide a circuit board etching device, which solves the problem that the left and right positions of the circuit board are not restricted during the transportation process, so that the circuit board may shake left and right, and the etching liquid cannot be evenly sprayed on the circuit board, affecting the etching effect, by setting a guide fixing unit and a cleaning unit.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A circuit board etching device comprises a main body unit, and further comprises a guide fixing unit, a cleaning unit, an etching unit and a drying unit arranged in the main body unit, wherein the cleaning unit, the etching unit and the drying unit are all located above the guide fixing unit;

[0008] The guiding and fixing unit includes a fixing seat installed on the side wall of the main body unit, an electric push cylinder installed on the top of the fixing seat with its telescopic end penetrating into the interior of the main body unit, a connecting plate installed on the telescopic end of the electric push cylinder, and a guiding member arranged on the inner side of the connecting plate;

[0009] The cleaning unit includes a water storage tank installed on the top of the main body unit and at the input end, a first water delivery pipe installed on the side wall of the water storage tank and communicating with the interior of the main body unit, a first water distribution tank installed at the output end of the first water delivery pipe, and a first water spray head installed at the bottom of the first water distribution tank.

[0010] Preferably, the main body unit includes an etching tank, a conveyor belt movably arranged in the etching tank, and a driving motor installed at the input end of the conveyor belt.

[0011] Preferably, the guiding member includes a U-shaped seat installed on the inner side wall of the connecting plate, and a sliding wheel movably arranged in the U-shaped seat.

[0012] Preferably, there are two groups of the guiding and fixing units, and the two groups of guiding and fixing units are symmetrically arranged with respect to the conveyor belt.

[0013] Preferably, the etching unit includes a solution tank installed at the middle section on the top of the main body unit, an infusion pipe installed on the side wall of the solution tank and communicating with the interior of the etching tank, a liquid distribution tank installed at the output end of the infusion pipe, and a solution spray head installed at the bottom of the liquid distribution tank.

[0014] Preferably, the guiding and fixing unit further includes a second water delivery pipe installed on the side wall of the water storage tank, communicating with the interior of the etching tank, and located on the side of the liquid distribution tank away from the water storage tank, a second water distribution tank installed at the output end of the second water delivery pipe, and a second water spray head installed at the bottom of the second water distribution tank.

[0015] Preferably, the drying unit includes a drying box installed on the inner top wall of the etching tank, a fan installed on the inner top wall of the drying box, and a heating column installed inside the drying box and below the fan.

[0016] Preferably, there are two groups of the drying units, one group of drying units is located between the cleaning unit and the etching unit, and the other group of drying units is located on the side of the second water distribution tank away from the liquid distribution tank.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the present utility model, through the provided fixing unit and cleaning unit, when transporting the circuit board, after placing the circuit board on the surface of the conveyor belt, the telescopic end of the electric push cylinder extends, and drives the guiding member to move closer to the circuit board through the connecting plate until it stops when the side wall of the sliding wheel fits against the side wall of the circuit board. At this time, the driving motor drives the conveyor belt to rotate, and during the process of the circuit board moving along with the conveyor belt, the sliding wheel restricts the circuit board in the left - right direction, avoiding the sliding of the circuit board during transportation and ensuring the uniform spraying of the etching solution; when the etching solution is evenly sprayed onto the circuit board, the circuit board continues to move along with the conveyor belt. After moving below the second water distribution tank, the water led out from the water storage tank through the second water delivery pipe will be sprayed onto the surface of the circuit board through the second spray head, thereby quickly flushing the residual etching solution on the circuit board, and the hot air flow generated by the mutual cooperation of the fan and the heating column quickly eliminates the residual aqueous solution on the circuit board, improving the working efficiency of circuit board etching. Description of the Drawings

[0019] Figure 1 Schematic three - dimensional structure diagram of the present utility model;

[0020] Figure 2 Schematic left - view structure diagram of the present utility model;

[0021] Figure 3 In the present utility model Figure 2 Enlarged schematic diagram of structure I;

[0022] Figure 4 In the present utility model Figure 2 Cross - sectional structure schematic diagram at A - A of the present utility model;

[0023] Figure 5 In the present utility model Figure 2 Cross - sectional structure schematic diagram at B - B of the present utility model.

[0024] In the figure:

[0025] 1. Main body unit; 101. Etching tank; 102. Conveyor belt; 103. Driving motor;

[0026] 2. Guiding and fixing unit; 201. Fixed seat; 202. Electric push cylinder; 203. Connecting plate; 204. Guiding member; 2041. C - shaped seat; 2042. Sliding wheel;

[0027] 3. Cleaning unit; 301. Water storage tank; 302. First water delivery pipe; 303. First water distribution tank; 304. First spray head; 305. Second water delivery pipe; 306. Second water distribution tank; 307. Second spray head;

[0028] 4. Etching unit; 401. Solution tank; 402. Infusion pipe; 403. Liquid separation tank; 404. Solution spray head;

[0029] 5. Drying unit; 501. Drying box; 502. Fan; 503. Heating column. Detailed implementation manners

[0030] To make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation manners. Embodiment 1

[0031] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, a circuit board etching device includes a main body unit 1, and further includes a guiding and fixing unit 2, a cleaning unit 3, an etching unit 4 and a drying unit 5 arranged in the main body unit 1. Moreover, the cleaning unit 3, the etching unit 4 and the drying unit 5 are all located above the guiding and fixing unit 2;

[0032] As Figure 5 shown, the guiding and fixing unit 2 includes a fixing seat 201 installed on the side wall of the main body unit 1, an electric push cylinder 202 installed on the top of the fixing seat 201 and with its telescopic end penetrating into the interior of the main body unit 1, a connecting plate 203 installed on the telescopic end of the electric push cylinder 202, and a guiding member 204 arranged on the inner side of the connecting plate 203. During the telescopic movement of the telescopic end of the electric push cylinder 202, the guiding member 204 moves synchronously;

[0033] As Figure 1 and Figure 2 shown, the main body unit 1 includes an etching tank 101, a conveyor belt 102 movably arranged in the etching tank 101, and a driving motor 103 installed at the input end of the conveyor belt 102. When the driving motor 103 drives the conveyor belt 102 to rotate, it can drive the circuit board on the surface of the conveyor belt 102 to move.

[0034] As Figure 3 shown, the guiding member 204 includes a U-shaped seat 2041 installed on the inner side wall of the connecting plate 203, and a sliding wheel 2042 movably arranged in the U-shaped seat 2041. The setting of the sliding wheel 2042 plays a role in guiding and fixing the transportation process of the circuit board.

[0035] As Figure 2 and Figure 5 shown, there are two groups of guiding and fixing units 2, and the two groups of guiding and fixing units 2 are symmetrically arranged with respect to the conveyor belt 102, making the transportation process of the circuit board more stable.

[0036] When the circuit board is being transported, after the circuit board is placed on the surface of the conveyor belt 102, the telescopic end of the electric push cylinder 202 extends, and drives the guide member 204 to move close to the circuit board through the connecting plate 203 until the side wall of the sliding wheel 2042 fits with the side wall of the circuit board and stops. At this time, the driving motor 103 drives the conveyor belt 102 to rotate, and in the process of the circuit board following the movement of the conveyor belt 102, the sliding wheel 2042 restricts the circuit board in the left and right directions, thereby avoiding sliding during transportation and ensuring uniform spraying of the etching liquid. Example 2

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a circuit board etching device includes a main unit 1, and also includes a guide fixing unit 2, a cleaning unit 3, an etching unit 4 and a drying unit 5 arranged in the main unit 1, and the cleaning unit 3, the etching unit 4 and the drying unit 5 are all located above the guide fixing unit 2;

[0038] like Figure 5 As shown, the guide fixing unit 2 includes a fixing seat 201 installed on the side wall of the main unit 1, an electric push cylinder 202 installed on the top of the fixing seat 201 and with the telescopic end penetrating into the inside of the main unit 1, a connecting plate 203 installed on the telescopic end of the electric push cylinder 202, and a guide member 204 arranged on the inner side of the connecting plate 203. During the telescopic process of the telescopic end of the electric push cylinder 202, the guide member 204 moves synchronously with it;

[0039] like Figure 4 As shown, the cleaning unit 3 includes a water tank 301 installed on the top of the main unit 1 and located at the input end, a first water pipe 302 installed on the side wall of the water tank 301 and connected to the inside of the main unit 1, a first water distribution tank 303 installed at the output end of the first water pipe 302, and a first water spray head 304 installed at the bottom of the first water distribution tank 303. The first water pipe 302 can transport water in the water tank 301 to the first water distribution tank 303, and spray it onto the surface of the circuit board through the first water spray head 304 to clean the dust accumulated on the surface of the circuit board.

[0040] like Figure 1 and Figure 2 As shown, the main unit 1 includes an etching box 101, a conveyor belt 102 movably arranged in the etching box 101, and a driving motor 103 installed at the input end of the conveyor belt 102. When the driving motor 103 drives the conveyor belt 102 to rotate, it can drive the circuit board on the surface of the conveyor belt 102 to move.

[0041] like Figure 3As shown, the guiding member 204 includes a U-shaped seat 2041 installed on the inner side wall of the connecting plate 203, and a sliding wheel 2042 movably arranged within the U-shaped seat 2041. The setting of the sliding wheel 2042 plays a role in guiding and fixing the circuit board during the transportation process.

[0042] As Figure 2 shown, there are two sets of guiding and fixing units 2, and the two sets of guiding and fixing units 2 are symmetrically arranged with respect to the conveyor belt 102, making the transportation process of the circuit board more stable. Figure 5 As

[0043] shown, the etching unit 4 includes a solution tank 401 at the middle section on the top of the main body unit 1, an infusion pipe 402 installed on the side wall of the solution tank 401 and communicating with the inside of the etching tank 101, a distribution tank 403 installed at the output end of the infusion pipe 402, and a solution spray head 404 installed at the bottom of the distribution tank 403. The setting of the infusion pipe 402 can transport the etching solution in the solution tank 401 into the distribution tank 403. Figure 4

[0044] As shown, the guiding and fixing unit 2 further includes a second water delivery pipe 305 installed on the side wall of the water storage tank 301, communicating with the inside of the etching tank 101, and located on the side of the distribution tank 403 away from the water storage tank 301, a second distribution tank 306 installed at the output end of the second water delivery pipe 305, and a second spray head 307 installed at the bottom of the second distribution tank 306. The second water delivery pipe 305 can transport the water from the water storage tank 301 into the second distribution tank 306; and between the water storage tank 301 and the first water delivery pipe 302, the second water delivery pipe 305, and between the solution tank 401 and the infusion pipe 402, extraction pumps are provided. This structure is a conventional technical means in this field and will not be elaborated here. Figure 4

[0045] As shown, the drying unit 5 includes a drying box 501 installed on the inner top wall of the etching tank 101, a fan 502 installed on the inner top wall of the drying box 501, and a heating column 503 installed inside the drying box 501 and located below the fan 502. The hot air flow generated by the mutual cooperation of the fan 502 and the heating column 503 quickly eliminates the aqueous solution remaining on the circuit board. Figure 4

[0046] As shown, there are two sets of drying units 5. One set of drying units 5 is located between the cleaning unit 3 and the etching unit 4, and this set of drying units 5 can quickly dry the water stains remaining on the surface of the circuit board after removing dust. The other set of drying units 5 is located on the side of the second distribution tank 306 away from the distribution tank 403, and can quickly dry the water stains remaining on the surface of the circuit board after washing off the etching solution. Figure 4

[0047] ​After the etching liquid is evenly sprayed onto the circuit board, the circuit board continues to move following the conveyor belt 102. When it moves to the bottom of the second water distribution tank 306, the water drawn from the water storage tank 301 through the second water supply pipe 305 will be sprayed onto the surface of the circuit board through the second water nozzle 307, thereby quickly washing away the etching liquid remaining on the circuit board. The hot air flow generated by the cooperation between the fan 502 and the heating column 503 quickly eliminates the residual aqueous solution on the circuit board, thereby improving the working efficiency of circuit board etching.

[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A circuit board etching device, comprising a main unit (1), characterized in that: It further includes a guiding and fixing unit (2), a cleaning unit (3), an etching unit (4), and a drying unit (5) disposed within the main body unit (1), and the cleaning unit (3), the etching unit (4), and the drying unit (5) are all located above the guiding and fixing unit (2); The guiding and fixing unit (2) includes a fixing seat (201) installed on the side wall of the main body unit (1), an electric push cylinder (202) installed on the top of the fixing seat (201) with its telescopic end penetrating into the interior of the main body unit (1), a connecting plate (203) installed on the telescopic end of the electric push cylinder (202), and a guiding member (204) disposed on the inner side of the connecting plate (203); The cleaning unit (3) includes a water storage tank (301) installed on the top of the main body unit (1) and at the input end, a first water delivery pipe (302) installed on the side wall of the water storage tank (301) and communicating with the interior of the main body unit (1), a first sub-water tank (303) installed at the output end of the first water delivery pipe (302), and a first water spray head (304) installed at the bottom of the first sub-water tank (303).

2. A circuit board etching device according to claim 1, characterized in that: The main body unit (1) includes an etching tank (101), a conveyor belt (102) movably disposed within the etching tank (101), and a driving motor (103) installed at the input end of the conveyor belt (102).

3. A circuit board etching device according to claim 2, characterized in that: The guiding member (204) includes a U-shaped seat (2041) installed on the inner side wall of the connecting plate (203), and a sliding wheel (2042) movably disposed within the U-shaped seat (2041).

4. A circuit board etching device according to claim 3, characterized in that: There are two sets of the guiding and fixing units (2), and the two sets of guiding and fixing units (2) are symmetrically arranged with respect to the conveyor belt (102).

5. A circuit board etching device according to claim 1, characterized in that: The etching unit (4) includes a solution tank (401) installed on the top of the main body unit (1) and at the middle section, an infusion pipe (402) installed on the side wall of the solution tank (401) and communicating with the interior of the etching tank (101), a distribution box (403) installed at the output end of the infusion pipe (402), and a solution spray head (404) installed at the bottom of the distribution box (403).

6. A circuit board etching device according to claim 5, characterized in that: The guiding and fixing unit (2) further includes a second water delivery pipe (305) installed on the side wall of the water storage tank (301), communicating with the interior of the etching tank (101) and located on the side of the distribution box (403) away from the water storage tank (301), a second sub-water tank (306) installed at the output end of the second water delivery pipe (305), and a second water spray head (307) installed at the bottom of the second sub-water tank (306).

7. A circuit board etching device according to claim 2, characterized in that: The drying unit (5) includes a drying box (501) installed on the inner top wall of the etching tank (101), a fan (502) installed on the inner top wall of the drying box (501), and a heating column (503) installed inside the drying box (501) and below the fan (502).

8. A circuit board etching device according to claim 7, characterized in that: There are two sets of the drying units (5), one set of the drying unit (5) is located between the cleaning unit (3) and the etching unit (4), and the other set of the drying unit (5) is located on the side of the second sub-water tank (306) away from the distribution box (403).

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