Etching device for printed circuit board type heat exchanger core plate production

Abstract

The application provides an etching device for printed circuit board type heat exchanger core plate production and relates to the technical field of circuit board production. The etching device for printed circuit board type heat exchanger core plate production comprises a box body, an etching pool, a transmission chain, a guide plate and a storage rack. The storage rack comprises rollers, first connecting rods, T-shaped plates, first T-shaped sliding grooves and connecting plates. The guide plate is arranged on the inner side wall of the box body. When the transmission chain slowly moves in the etching pool with the storage rack, the guide plate reciprocally moves the first connecting rods by the rollers, the first connecting rods slide the T-shaped plates in the first T-shaped sliding grooves, the T-shaped plates move the two groups of side plates to the two sides by the two connecting plates, and thus a group of metal plates inserted into the storage rack swim in the etching pool, the etching liquid in the etching pool flows, and the etching speed of the metal plates is accelerated, so that the large-scale and high-efficiency production requirements are met.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing technology, specifically to an etching apparatus for producing printed circuit board heat exchanger core boards. Background Technology

[0002] The core plate of a printed circuit board heat exchanger is the core component of a printed circuit board heat exchanger. It is used for heat exchange between two fluids by precisely manufacturing tiny channels on a metal plate. This core plate is usually composed of multiple thin metal plates stacked together. Specific channels are etched or machined on each metal plate. These channels are like the lines on a circuit board, with a fine layout and design.

[0003] In the immersion etching process, the reaction between the etching solution and the metal on the core board surface mainly relies on natural diffusion. That is, the chemical substances in the etching solution need to reach the surface of the circuit board and react with the metal through diffusion. At the same time, the reaction products also need to leave the surface of the circuit board through diffusion. This natural diffusion is relatively slow. Especially when the metal layer on the surface of the circuit board is thick or the etched pattern is complex, it will result in a long etching time and low production efficiency, which cannot meet the needs of large-scale and high-efficiency production.

[0004] To address this, we have developed a new etching device for producing printed circuit board heat exchanger core boards. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an etching apparatus for producing printed circuit board heat exchanger core plates, which solves the problems of long immersion etching time and low production efficiency in existing technologies, making it difficult to meet the needs of large-scale, high-efficiency production.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution: an etching device for producing printed circuit board heat exchanger core plates, comprising a box and a shelf, wherein an etching pool is fixedly installed at the bottom of the box, and a cleaning pool is fixedly installed at the bottom of the box on one side of the etching pool, and two symmetrical guide plates are fixedly installed on the inner side wall of the box, wherein the guide plates have a wavy outline, and the two guide plates are respectively located above the etching pool and the cleaning pool.

[0009] The shelf includes a base plate and a connecting plate. Two sets of symmetrical side plates are fixedly connected to the top of the base plate. Each set of side plates is arranged in a linear array. A slot is opened on one side of each side plate. Two symmetrical hemispherical protrusions are fixedly connected to each side plate opposite to the two inner side walls. A connecting plate is fixedly connected to the other side of each of the two side plates located in the middle. A T-shaped plate is fixedly connected to one end of each of the two connecting plates.

[0010] One end of the T-shaped plate is fixedly connected to a first connecting rod that slides with the connecting plate. One end of the first connecting rod is fixedly connected to a U-shaped plate. Rollers are rotatably fitted between the two inner sides of the U-shaped plate. The rollers slide with the guide plate. A first sliding hole is opened at the other end of the T-shaped plate.

[0011] The connecting plate has a first T-shaped groove on one side that slides with the T-shaped plate. A first insert rod is fixedly connected to an inner side of the connecting plate. The first insert rod slides with a first sliding hole. A first spring is sleeved on the circumferential side of the first insert rod at the other end of the T-shaped plate.

[0012] Preferably, a connecting plate is fixedly connected to one end of the connecting plate, a second T-shaped groove is provided on one side of the connecting plate, and a second sliding hole is provided at one end of the connecting plate, the second sliding hole penetrating the connecting plate.

[0013] Preferably, a second insert rod is slidably fitted inside the second sliding hole, a second spring is provided at one end of the second insert rod inside the second sliding hole, and a trapezoidal rod is fixedly connected to the periphery of the second insert rod.

[0014] Preferably, a square groove is provided on the other side of the connecting plate, and the square groove communicates with the second sliding hole.

[0015] Preferably, the steering plate is slidably fitted inside the square groove, and a trapezoidal inclined groove is provided through one side of the steering plate to slidably fit with the trapezoidal rod. A pressure rod is fixedly connected to the top of the steering plate.

[0016] Preferably, a drive source is fixedly installed on one outer side of the housing, and several sprockets are rotatably engaged on one inner side of the housing. The output end of the drive source is connected to one of the sprockets, and a transmission chain is sleeved on the circumferential sides of the several sprockets.

[0017] Preferably, a plurality of connecting blocks are fixedly installed on the transmission chain, a second connecting rod is fixedly connected to one side of the connecting block, a chuck is fixedly connected to one end of the second connecting rod, the chuck slides in cooperation with the second T-shaped groove, and an insertion hole is provided at one end of the chuck, the insertion hole is inserted into the second insertion rod.

[0018] Preferably, two symmetrical trapezoidal guide plates are fixedly connected to the top of the box body, and the trapezoidal guide plates are slidably engaged with the pressure rod.

[0019] Preferably, conveyor belts are installed on both sides of the box, and a roller conveyor is fixedly installed on one end of one of the conveyor belts on the inner wall of the box.

[0020] (III) Beneficial Effects

[0021] This invention provides an etching apparatus for producing printed circuit board heat exchanger core boards, comprising the following:

[0022] Beneficial effects:

[0023] 1. This etching device for producing printed circuit board heat exchanger core plates uses two trapezoidal guide plates at the top of the housing. When the shelf passes through the trapezoidal guide plates, the trapezoidal guide plates push the pressure rod up and down, thereby causing the second insertion rod to slide back and forth in the second sliding hole. This controls one end of the second insertion rod to insert into or disengage from the insertion hole on the chuck, thereby controlling the connection between the shelf and the transmission chain. This achieves seamless integration of the etching device with the automated production line, meeting the needs of large-scale, high-efficiency production.

[0024] 2. The etching device for producing the core plate of the printed circuit board heat exchanger uses a guide plate on the inner side wall of the chamber. When the transmission chain slowly moves the rack in the etching tank, the guide plate pushes the first connecting rod to move back and forth through rollers. At the same time, the first connecting rod pushes the T-shaped plate to slide in the first T-shaped groove. The T-shaped plate then drives the two sets of side plates to move to both sides through the two connecting plates, thereby causing a set of metal plates inserted on the rack to move in the etching tank. This promotes the flow of etching solution in the etching tank, allowing fresh etching solution to reach the surface of the metal plate more quickly, reducing the time it takes for chemical substances to reach the surface of the metal plate. The flowing etching solution can also quickly carry away the reaction products, preventing them from accumulating on the surface of the metal plate, thereby increasing the etching speed of the metal plate. Attached Figure Description

[0025] Figure 1 This is a first-view cross-sectional schematic diagram of the present invention;

[0026] Figure 2 This is a first-view cross-sectional view of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the second perspective of the present invention;

[0028] Figure 4 This is a third-view cross-sectional schematic diagram of the present invention;

[0029] Figure 5 This is a structural diagram of the shelving unit;

[0030] Figure 6 This is a partial cross-sectional schematic diagram of the shelving structure;

[0031] Figure 7 This is a partial cross-sectional diagram of the connection point of the shelving unit;

[0032] Figure 8 This is a structural diagram of the connection between the shelf and the drive chain.

[0033] The components include: 1. Box body; 2. Shelf; 3. Etching tank; 4. Cleaning tank; 5. Guide plate; 6. Base plate; 7. Connecting plate; 8. Side plate; 9. Slot; 10. Hemispherical protrusion; 11. Connecting plate; 12. T-shaped plate; 13. First connecting rod; 14. U-shaped plate; 15. Roller; 16. First sliding hole; 17. First T-shaped sliding groove; 18. First insert rod; 19. First spring; 20. Connecting plate; 21. 22. Second T-shaped chute; 23. Second sliding hole; 24. Second insert rod; 25. Second spring; 26. Trapezoidal rod; 27. Square chute; 28. Steering plate; 29. ​​Trapezoidal inclined chute; 30. Pressure rod; 31. Drive source; 32. Sprocket; 33. Transmission chain; 34. Connecting block; 35. Second connecting rod; 36. Chuck; 37. Insertion hole; 38. Trapezoidal guide plate; 39. Conveyor belt; 30. Roller conveyor table. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Examples, such as Figure 1 - Figure 8 As shown, this embodiment of the invention provides an etching apparatus for producing printed circuit board heat exchanger core plates, including a housing 1 and a shelf 2. An etching pool 3 is fixedly installed at the bottom of the housing 1, and a cleaning pool 4 is fixedly installed at the bottom of the housing 1 on one side of the etching pool 3. After etching the metal plate through the etching pool 3, the plate enters the cleaning pool 4 to clean the residual liquid adhering to the metal plate.

[0036] Two symmetrical guide plates 5 are fixedly installed on the inner side wall of the housing 1. The guide plates 5 have a wavy outline. The two guide plates 5 are located above the etching pool 3 and the cleaning pool 4, respectively. The shelf 2 includes a base plate 6 and a connecting plate 7. Two symmetrical sets of side plates 8 are fixedly connected to the top of the base plate 6. Each set of side plates 8 is arranged in a linear array. A slot 9 is opened on one side of the side plate 8. Two symmetrical hemispherical protrusions 10 are fixedly connected to the side plates 8 opposite to the two inner side walls. The metal plate can be inserted between the two side plates 8, and the two sides of the metal plate are respectively inserted into the two slots 9. By setting the hemispherical protrusions 10 in the slots 9, the etching of the metal plate can be avoided because the side of the metal plate is attached to the inner wall of the slot 9.

[0037] On the other side of each of the two side plates 8 located in the middle section, a connecting plate 11 is fixedly connected. A T-shaped plate 12 is fixedly connected to one end of each connecting plate 11. A first connecting rod 13, which slides with the connecting plate 7, is fixedly connected to one end of the T-shaped plate 12. A U-shaped plate 14 is fixedly connected to one end of the first connecting rod 13. Rollers 15 are rotatably fitted between the two inner sides of the U-shaped plate 14. The rollers 15 slide with the guide plate 5. A first sliding hole 16 is provided at the other end of the T-shaped plate 12. A first T-shaped groove 17, which slides with the T-shaped plate 12, is provided on one side of the connecting plate 7. A first insert rod 18 is fixedly connected to one inner side of the connecting plate 7. The first insert rod 18 slides with the first sliding hole 16. A first spring 19 is sleeved on the circumferential side of the first insert rod 18 at the other end of the T-shaped plate 12. When the shelf 2 is being etched in the etching pool 3, the shelf 2 should be kept moving slowly and continuously within the etching pool 3. When the roller 15 passes the guide plate 5, the roller 15 slides along the contour of the guide plate 5. Since the contour of the guide plate 5 is wavy, the guide plate 5 pushes the first connecting rod 13 to move back and forth through the roller 15. At the same time, the first connecting rod 13 pushes the T-shaped plate 12 to slide in the first T-shaped groove 17 and intermittently compresses the first spring 19. The elastic force of the first spring 19 is used to ensure that the roller 15 is in contact with the contour surface of the guide plate 5. The T-shaped plate 12 drives the two sets of side plates 8 to move to both sides through the two connecting plates 11, thereby driving a set of metal plates inserted into the shelf 2 to move in the etching pool 3. This promotes the flow of etching solution in the etching pool 3, so that fresh etching solution reaches the surface of the metal plate more quickly, reducing the time for chemical substances to reach the surface of the metal plate. The flowing etching solution can quickly carry away the reaction products and prevent them from accumulating on the surface of the metal plate.

[0038] A connecting plate 20 is fixedly connected to one end of a connecting plate 7. A second T-shaped groove 21 is provided on one side of the connecting plate 20. A second sliding hole 22 is provided on one end of the connecting plate 7, penetrating the connecting plate 20. A second insert rod 23 is slidably fitted inside the second sliding hole 22. A second spring 24 is provided at one end of the second insert rod 23 inside the second sliding hole 22. A trapezoidal rod 25 is fixedly connected to the periphery of the second insert rod 23. A square groove 26 is provided on the other side of the connecting plate 7, communicating with the second sliding hole 22. A turning plate 27 is slidably fitted inside the square groove 26. A trapezoidal inclined groove 28 is provided on one side of the turning plate 27, slidably fitting with the trapezoidal rod 25. A pressure rod 29 is fixedly connected to the top of the turning plate 27. Two symmetrical trapezoidal guides are fixedly connected to the top of the housing 1. Plate 37, trapezoidal guide plate 37 and pressure rod 29 are slidably engaged. When the shelf 2 with metal plate is just transported into the box 1, pressure rod 29 will move below trapezoidal guide plate 37 and slide along the contour of trapezoidal guide plate 37. During this sliding process, trapezoidal guide plate 37 will first drive pressure rod 29 to move down and stop moving down after reaching the set height. When pressure rod 29 moves down, pressure rod 29 will drive steering plate 27 to move down synchronously. When steering plate 27 moves down, it will drive trapezoidal rod 25 to slide in trapezoidal inclined groove 28 and drive trapezoidal rod 25 to move to one side. Trapezoidal rod 25 will drive second insert rod 23 to slide in second sliding hole 22 and compress second spring 24, and make second insert rod 23 completely retract into second sliding hole 22.

[0039] A drive source 30 (consisting of a motor and a reducer, which reduces the output speed of the motor while increasing its output torque) is fixedly installed on one outer side of the housing 1. Several sprockets 31 are rotatably fitted onto one inner side of the housing 1. The output end of the drive source 30 is connected to one of the sprockets 31. A transmission chain 32 is sleeved around the circumference of the sprockets 31. Several connecting blocks 33 are fixedly installed on the transmission chain 32. A second connecting rod 34 is fixedly connected to one side of each connecting block 33, and one end of the second connecting rod 34 is fixedly connected to... A chuck 35 is connected, and a sprocket 31 is driven to rotate by a drive source 30, which in turn drives the transmission chain 32 to move. The transmission chain 32 drives the connecting block 33 to move, and the connecting block 33 drives the second connecting rod 34 and the chuck 35 to move synchronously. The chuck 35 is slidably engaged with the second T-shaped slide groove 21. One end of the chuck 35 is provided with an insertion hole 36, which is engaged with the second insertion rod 23. Conveyor belts 38 are mounted on both sides of the box body 1, and a roller conveyor table 39 is fixedly installed on one end of a conveyor belt 38 on the inner wall of the box body 1.

[0040] The connection process between the shelf 2 and the transmission mechanism is as follows: First, the shelf 2 containing the metal plate is transported to the roller conveyor table 39 via a conveyor belt 38. During this transport process, the pressure rod 29 moves below the trapezoidal guide plate 37. The pressure rod 29 slides along one side of the contour of the trapezoidal guide plate 37 and moves downward. The pressure rod 29 drives the steering plate 27 to move downward synchronously. When the steering plate 27 moves downward, it drives the trapezoidal rod 25 to slide in the trapezoidal inclined groove 28 and moves the trapezoidal rod 25 to one side. The trapezoidal rod 25 then drives the second insertion rod 23 to slide in the second sliding hole 22 and compress the second spring 24. The second insertion rod 23 is fully retracted into the second sliding hole 22. Inside the hole 22 and maintaining this state, when the transmission chain 32 drives a chuck 35 to gradually approach the shelf 2 and slide the chuck 35 into the second T-shaped groove 21, the chuck 35 can push the connecting plate 20 to move in the same direction, thereby driving the entire shelf 2 to move. At the same time, the pressure rod 29 will continue to slide along the contour of one side of the trapezoidal guide plate 37. Under the elastic force of the second spring 24, the pressure rod 29 begins to move upward, and one end of the second insertion rod 23 slides out of the second sliding hole 22 and inserts into the insertion hole 36 on the chuck 35, thereby preventing the chuck 35 from sliding out of the second T-shaped groove 21. At this time, the transmission chain 32 can make the shelf 2 move smoothly inside the box 1.

[0041] Working principle: When a conveyor belt 38 transports the shelf 2 containing the metal plate to the roller conveyor table 39, the pressure rod 29 moves below a trapezoidal guide plate 37. During this movement, the trapezoidal guide plate 37 pushes the pressure rod 29 down a certain distance, causing the second insert rod 23 to fully retract into the second sliding hole 22. When the drive chain 32 drives a chuck 35 to gradually approach the shelf 2 and slide the chuck 35 into the second T-shaped slide groove 21, the drive chain 32 can then drive the shelf 2 to continue moving through the chuck 35. At the same time, the pressure rod 29 continues to move along the trapezoidal guide plate 39. The guide plate 37 slides along one side of its contour, causing the pressure rod 29 to move upwards. One end of the second insertion rod 23 then slides out of the second sliding hole 22 and inserts into the insertion hole 36 on the chuck 35, thus securely connecting the shelf 2 to the transmission chain 32. This allows the transmission chain 32 to move the shelf 2 into the etching pool 3, where the metal plate on the shelf 2 is etched. During this process, the shelf 2 should move slowly within the etching pool 3. When the roller 15 passes the guide plate 5, it slides along the contour of the guide plate 5. Simultaneously, the guide plate 5 pushes the second insertion rod 23 through the roller 15. A connecting rod 13 reciprocates, pushing the T-shaped plate 12 to slide back and forth within the first T-shaped groove 17. The T-shaped plate 12, through two connecting plates 11, drives two sets of side plates 8 to move to both sides, thereby causing a set of metal plates inserted into the shelf 2 to move in the etching pool 3. This promotes the flow of etching solution in the etching pool 3 and increases the etching speed of the metal plates. Then, the transmission chain 32 drives the shelf 2 from the etching pool 3 to the cleaning pool 4. After the residual liquid on the metal plates is cleaned by the cleaning pool 4, the transmission chain 32 will carry the shelf 2 to move. The device moves onto another conveyor belt 38, while the pressure rod 29 moves below another trapezoidal guide plate 37, causing one end of the second insertion rod 23 to disengage from the insertion hole 36 on the chuck 35 and fully retract into the second sliding hole 22. At this time, the chuck 35 can slide out of the second T-shaped slide groove 21. Since the conveying speed of the other conveyor belt 38 is greater than that of the transmission chain 32, the other conveyor belt 38 drives the shelf 2 to move faster, causing the chuck 35 to disengage from the second T-shaped slide groove 21, so that the shelf 2 is no longer connected to the transmission chain 32, thereby seamlessly connecting this etching device with the automated production line.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An etching apparatus for producing printed circuit board heat exchanger core plates, comprising a housing (1) and a shelf (2), wherein an etching pool (3) is fixedly installed at the bottom of the housing (1), and a cleaning pool (4) is fixedly installed at the bottom of the housing (1) on one side of the etching pool (3), characterized in that: The inner wall of the box (1) is fixedly equipped with two symmetrical guide plates (5). The guide plates (5) have a wavy outline and are located above the etching pool (3) and the cleaning pool (4), respectively. The shelf (2) includes a base plate (6) and a connecting plate (7). The top of the base plate (6) is fixedly connected to two sets of symmetrical side plates (8). Each set of side plates (8) is arranged in a linear array. A slot (9) is provided on one side of each side plate (8). Two symmetrical hemispherical protrusions (10) are fixedly connected to the two inner side walls of each side plate (8). A connecting plate (11) is fixedly connected to the other side of each of the two side plates (8) located in the middle. A T-shaped plate (12) is fixedly connected to one end of each of the two connecting plates (11). One end of the T-shaped plate (12) is fixedly connected to a first connecting rod (13) that slides with the connecting plate (7). One end of the first connecting rod (13) is fixedly connected to a U-shaped plate (14). A roller (15) is rotatably fitted between the two inner sides of the U-shaped plate (14). The roller (15) slides with the guide plate (5). The other end of the T-shaped plate (12) is provided with a first sliding hole (16). The connecting plate (7) has a first T-shaped groove (17) on one side that slides with the T-shaped plate (12). A first insert rod (18) is fixedly connected to one inner side of the connecting plate (7). The first insert rod (18) slides with the first sliding hole (16). A first spring (19) is sleeved on the other side of the first insert rod (18) at the T-shaped plate (12).

2. The etching apparatus for producing printed circuit board heat exchanger core plates according to claim 1, characterized in that: One end of the connecting plate (7) is fixedly connected to the connecting plate (20). A second T-shaped groove (21) is provided on one side of the connecting plate (20), and a second sliding hole (22) is provided on one end of the connecting plate (7). The second sliding hole (22) passes through the connecting plate (20).

3. The etching apparatus for producing printed circuit board heat exchanger core plates according to claim 2, characterized in that: A second insert rod (23) is slidably fitted inside the second sliding hole (22). A second spring (24) is provided at one end of the second insert rod (23) inside the second sliding hole (22). A trapezoidal rod (25) is fixedly connected to the periphery of the second insert rod (23).

4. The etching apparatus for producing a printed circuit board type heat exchanger core board according to claim 3, characterized in that: A square groove (26) is provided on the other side of the connecting plate (7), and the square groove (26) is connected to the second sliding hole (22).

5. The etching apparatus for producing a printed circuit board type heat exchanger core board according to claim 4, characterized in that: The square groove (26) is slidably fitted with a steering plate (27). A trapezoidal inclined groove (28) is provided on one side of the steering plate (27) to slidably fit with the trapezoidal rod (25). A pressure rod (29) is fixedly connected to the top of the steering plate (27).

6. The etching apparatus for producing a printed circuit board heat exchanger core board according to claim 5, characterized in that: A drive source (30) is fixedly installed on one outer side of the housing (1), and a plurality of sprockets (31) are rotatably engaged on one inner side of the housing (1). The output end of the drive source (30) is connected to one of the sprockets (31), and a transmission chain (32) is sleeved on the periphery of the plurality of sprockets (31).

7. The etching apparatus for producing a printed circuit board type heat exchanger core board according to claim 6, characterized in that: A number of connecting blocks (33) are fixedly installed on the transmission chain (32). A second connecting rod (34) is fixedly connected to one side of the connecting block (33). A chuck (35) is fixedly connected to one end of the second connecting rod (34). The chuck (35) slides in cooperation with the second T-shaped slide groove (21). An insertion hole (36) is opened at one end of the chuck (35). The insertion hole (36) is inserted into the second insertion rod (23).

8. The etching apparatus for producing a printed circuit board type heat exchanger core board according to claim 7, characterized in that: The top of the box (1) is fixedly connected with two symmetrical trapezoidal guide plates (37), and the trapezoidal guide plates (37) are slidably engaged with the pressure rod (29).

9. An etching apparatus for producing a printed circuit board type heat exchanger core board according to claim 8, characterized in that: The box (1) is equipped with conveyor belts (38) on both sides, and a roller conveyor table (39) is fixedly installed on one end of the conveyor belt (38) on the inner wall of the box (1).

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