Film-stripping, etching and tin-stripping machine for multi-layer high-precision circuit board

Abstract

The utility model relates to the technical field of etching tin-stripping machines, and discloses a film-stripping etching tin-stripping machine for a multi-layer high-precision circuit board, which comprises a cross rod, stand columns are fixed at two ends of the cross rod, a fixed rod I is fixed between the stand columns, a fixed rod I is fixed on one side of the middle part of the cross rod, two fixed rods II are fixed between the fixed rods I, and the two fixed rods II are fixed on the other side of the cross rod. A fixing plate is fixed to the lower surfaces of the two second fixing rods, an L-shaped fixing plate is arranged in the middle of the fixing plate, etching liquid output equipment is fixed to one end of a backflow plate, a hose is connected to one end of the etching liquid output equipment, a spraying assembly is connected to one end of the hose, side plates are fixed to the outer surfaces of the two sides of the stand column, and backflow grooves are fixed to one sides of the side plates. A transmission assembly is arranged in the backflow groove, an etching liquid recycling assembly is arranged between the two side plates, the spraying assembly achieves multi-angle and all-directional spraying coverage through the design of the annular conveying pipe, it is ensured that etching liquid is evenly sprayed on a circuit board, and the etching efficiency and precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of etching and tin stripping machines, in particular to a film stripping and tin stripping machine for multi-layer high-precision circuit boards. Background Art

[0002] As an indispensable equipment in the modern electronic manufacturing process, the film stripping, etching and tin stripping machine has a background technology that stems from the demand for high-precision and high-efficiency processes in the fields of semiconductor manufacturing and circuit board processing. With the continuous upgrading of electronic products, the application of multi-layer high-precision circuit boards has become increasingly widespread, and the requirements for removing and etching the metal layers (such as tin plating) on ​​their surface have become increasingly stringent. In this context, the film stripping, etching and tin stripping machine came into being. It integrates multiple functions such as film stripping, etching and tin stripping in one, and can quickly and accurately remove unnecessary parts on the circuit board while retaining the required circuit pattern. This equipment uses specific chemical etchants, combined with advanced spray systems and circulation systems, to achieve precise etching and tin stripping of circuit boards, greatly improving production efficiency and product quality. At the same time, the film stripping, etching and tin stripping machine also focuses on environmental protection and energy saving. By recycling etching agents and tin stripping water, it reduces waste liquid discharge and energy consumption, meeting the requirements of sustainable development of modern industry. Its high degree of automation and simple operation have further reduced production costs and manpower requirements, bringing revolutionary changes to the electronic manufacturing industry. The spraying effect in the existing technology is insufficient, and the efficiency and precision of etching are not ideal, which needs to be improved. To this end, we propose a film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the present invention provides a film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards, which solves the above-mentioned problems.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards, comprising a cross bar, columns are fixed at both ends of the cross bar, a fixing rod 1 is fixed between the columns, a base is provided under the columns, a fixing rod 1 is fixed to one side of the middle part of the cross bar, two fixing rods 2 are fixed between the fixing rod 1, a fixing plate is fixed to the lower surface of the two fixing rods 2, an L-shaped fixing plate is provided in the middle of the fixing plate, an etching liquid output device is fixed to one end of the reflux plate, a hose is connected to one end of the etching liquid output device, a spray assembly is connected to one end of the hose, side panels are fixed to the outer surfaces of both sides of the columns, a notch is provided on the upper part of the side panels, a reflow trough is fixed to one side of the side panel, a transmission assembly is provided inside the reflux trough, and an etching liquid recovery assembly is provided between the two side panels.

[0007] Preferably, the spray assembly includes nozzle one, nozzle two and a delivery pipe. The delivery pipe is annular in shape and hollow inside. Nozzle one and nozzle two are provided on the left and right sides of the delivery pipe. Nozzle two is on the upper part of nozzle one. Nozzle one and nozzle two are hollow inside. Nozzle one and nozzle two are provided at both ends of nozzle one and nozzle two. Two nozzle ones and a collecting box are fixed above the delivery pipe. A collecting box is provided between the two nozzle ones. The length of nozzle one is greater than that of nozzle two. Two nozzle ones and two nozzle twos are provided below the delivery pipe. Nozzle one and nozzle two are spaced apart below the delivery pipe.

[0008] Preferably, the transmission assembly includes an auxiliary wheel 1, a rotating shaft 1, a rotating shaft 2, a slide rail, a belt, a pulley, a pressure wheel and a motor. The rotating shaft 1 and the rotating shaft 2 are rotatably arranged inside the reflow groove. The middle sleeve of the rotating shaft 1 is provided with a pressure wheel, and the middle sleeve of the rotating shaft 2 is provided with a pulley. Two parallel slide rails are provided between the two reflow grooves. The belt sleeve is provided on the outside of the pulley and the auxiliary wheel 1. The pressure wheel is rotatably arranged on the outside of the belt. One end of the rotating shaft 2 is connected to the motor, and the motor is fixed to the outer surface of the reflow groove.

[0009] Preferably, the etching liquid recovery assembly includes a reflux plate, an anti-overflow plate and a collection box. The two reflux plates are arranged at an angle, the upper surface of one end of the reflux plate is fixed below the reflux groove, and anti-overflow plates are fixed on both sides of the reflux plate. A collection box is slidably installed between the two reflux plates, and the lower surface of the collection box is arranged in a wavy shape.

[0010] Preferably, the base is circular in shape, and the lower portion of the side panel is fixedly connected to the outer surface of the column and the fixing rod.

[0011] Preferably, the bottom of the delivery pipe is fixed to the return plate through a fixing column, and a nozzle is provided on the inner ring surface of the delivery pipe.

[0012] Preferably, a circuit board placement box is provided above the slide rail and the belt, and a rectangular hole is provided on the outer surface of the circuit board placement box.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards, which has the following beneficial effects:

[0015] This machine, used for multi-layer, high-precision PCB stripping, features a circular delivery pipe design for the spray assembly, coupled with nozzles 1 and 2 located on both sides and below, to achieve multi-angle, all-around spray coverage. This design ensures that the etching solution evenly and fully covers every area of ​​the PCB requiring treatment, improving the efficiency and precision of etching and stripping.

[0016] 2. This machine, used for multi-layer, high-precision circuit boards, uses a motor-driven transmission assembly, which uses belts and pulleys to move the circuit board placement box on slide rails, achieving continuous and uniform conveyance of the circuit boards. Furthermore, the presence of a pressure wheel ensures the stability of the circuit boards during conveyance, preventing uneven etching or damage to the circuit boards caused by movement.

[0017] 3. This machine, used for multi-layer, high-precision circuit board stripping, uses an etchant recovery assembly with an inclined reflow plate and overflow prevention plate to effectively collect excess etchant after spraying, avoiding waste and environmental pollution. The wavy lower surface of the collection box increases the contact area with the etchant, improving recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is an isometric schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the front view of the utility model;

[0021] Figure 4 It is a schematic diagram of the left side view of the utility model.

[0022] In the figure: 1. Auxiliary wheel 1; 2. Reflow plate; 3. Anti-overflow plate; 4. Collection box; 5. Nozzle 1; 6. Nozzle 2; 7. Delivery pipe; 8. Circuit board placement box; 9. Side panel; 10. Rotating shaft 1; 11. Reflow trough; 12. Rotating shaft 2; 13. Slide rail; 14. Belt; 15. Pulley; 16. Pressure wheel; 17. Motor; 18. Base; 19. Column; 20. Crossbar; 21. Fixed rod 1; 22. Hose; 23. L-shaped fixed plate; 24. Fixed rod 2; 25. Etching liquid output device; 26. Fixed plate; 27. Nozzle; 28. Fixed column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4, a film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards, including a cross bar 20, with columns 19 fixed at both ends of the cross bar 20, a fixing rod 21 fixed between the columns 19, a base 18 is provided under the columns 19, a fixing rod 21 is fixed to one side of the middle of the cross bar 20, two fixing rods 24 are fixed between the fixing rod 1 21, and a fixing plate 26 is fixed to the lower surface of the two fixing rods 24, an L-shaped fixing plate 23 is provided in the middle of the fixing plate 26, an etching liquid output device 25 is fixed to one end of the reflow plate 2, and one end of the etching liquid output device 25 is connected to a hose 22, and one end of the hose 22 is connected to a spray assembly, side plates 9 are fixed to the outer surfaces of both sides of the columns 19, a notch is provided on the upper part of the side plates 9, a reflow trough 11 is fixed to one side of the side plates 9, a transmission assembly is provided inside the reflow trough 11, and an etching liquid recovery assembly is provided between the two side plates 9. The overall structural design is reasonable and has strong stability, which can meet the precision requirements of film stripping, etching and tin stripping of multi-layer high-precision circuit boards.

[0025] Furthermore, the spray assembly includes nozzle 1 5, nozzle 2 6, and a delivery pipe 7. The delivery pipe 7 is annular in shape and hollow inside. Nozzle 1 5 and nozzle 2 6 are located on either side of the delivery pipe 7. Nozzle 2 6 is located above nozzle 1 5. Both nozzles 1 5 and nozzle 2 6 are hollow inside. Spray heads 27 are located at each end of nozzle 1 5 and nozzle 2 6. Two nozzles 1 5 and a collection box 4 are fixed above the delivery pipe 7. The collection box 4 is located between the two nozzles 1 5. Nozzle 1 5 is longer than nozzle 2 6. Two nozzles 1 5 and two nozzles 2 6 are located below the delivery pipe 7. Nozzles 1 5 and nozzle 2 6 are spaced apart below the delivery pipe 7. The spray assembly achieves 360-degree spray coverage through the annular delivery pipe 7 and the upper and lower nozzles 1 5 and nozzle 2 6, ensuring that the etching liquid is evenly sprayed on the circuit board and improving the etching effect. The provision of spray heads 27 further enhances the uniformity and precision of the spray. The collecting box 4 can collect excess etching liquid to reduce waste.

[0026] Furthermore, the transmission assembly includes auxiliary wheel 1, rotating shaft 10, rotating shaft 2 12, slide rail 13, belt 14, pulley 15, pressure roller 16, and motor 17. Rotating shaft 10 and rotating shaft 2 12 are rotatably mounted within reflow trough 11. The middle sleeve of rotating shaft 10 is provided with pressure roller 16, and the middle sleeve of rotating shaft 2 12 is provided with pulley 15. Two parallel slide rails 13 are positioned between the two reflow troughs 11. Belt 14 is mounted outside pulley 15 and auxiliary wheel 1. Pressure roller 16 is rotatably mounted outside belt 14. One end of rotating shaft 2 12 is connected to motor 17, which is fixed to the outer surface of reflow trough 11. The transmission assembly is driven by motor 17, driving belt 14 and circuit board placement box 8 to move smoothly on slide rail 13, achieving continuous and stable transmission of circuit boards. Pressure roller 16 ensures the tension of belt 14, preventing the circuit boards from shaking or misaligning during transmission.

[0027] Furthermore, the etching liquid recovery assembly includes a reflux plate 2, an anti-overflow plate 3, and a collection box 4. The two reflux plates 2 are arranged at an angle, with the upper surface of one end of the reflux plate 2 fixed below the reflux groove 11. The anti-overflow plates 3 are fixed on both sides of the reflux plate 2. The collection box 4 is slidably installed between the two reflux plates 2. The lower surface of the collection box 4 is arranged in a wavy shape. The etching liquid recovery assembly effectively collects the etching liquid after spraying through the inclined reflux plate 2 and the anti-overflow plate 3, avoiding waste and environmental pollution. The wavy design of the collection box 4 increases the contact area with the etching liquid and improves the recovery efficiency.

[0028] Furthermore, the circular shape of base 18, with the lower portion of side panel 9 fixedly connected to the outer surface of column 19 and fixing rod 1 21, enhances the overall stability of the device. The addition of fixing rod 1 21 further stabilizes the device structure, ensuring stability during the etching and tin stripping process.

[0029] Furthermore, the bottom of the delivery pipe 7 is fixed to the return plate 2 by a fixing column 28, and a nozzle 27 is provided on the inner ring surface of the delivery pipe 7. These fixing and connecting structures ensure the stability and accuracy of the internal components of the equipment and improve the durability and reliability of the entire equipment.

[0030] Furthermore, a circuit board placement box 8 is provided above the slide rail 13 and belt 14. The outer surface of the circuit board placement box 8 is provided with a rectangular hole. The design of the circuit board placement box 8 facilitates the user to place and remove circuit boards, improving operational convenience and work efficiency. The rectangular hole ensures that the etching solution is evenly sprayed on the circuit board.

[0031] Working principle: The spray assembly realizes multi-angle and all-round spray coverage through the design of the annular conveying pipe 7, in conjunction with the nozzle 1 5 and nozzle 2 6 arranged on both sides and below, ensuring that the etching liquid is evenly sprayed on the circuit board. The transmission assembly is driven by the motor 17, and uses the belt 14 and the pulley 15 to drive the circuit board placement box 8 to move on the slide rail 13 to achieve continuous and uniform transportation of the circuit board. At the same time, the setting of the pressure wheel 16 ensures the stability of the circuit board during the transportation process. The etching liquid recovery assembly effectively collects the excess etching liquid after spraying through the inclined return plate 2 and the anti-overflow plate 3, avoiding the waste of etching liquid and pollution to the environment. The wavy lower surface design of the collection box 4 increases the contact area with the etching liquid and improves the recovery efficiency.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards, comprising a crossbar (20), characterized in that: The two ends of the crossbar (20) are fixed with upright posts (19), a fixed rod (21) is fixed between the upright posts (19), a base (18) is provided below the upright posts (19), a fixed rod (21) is fixed on one side of the middle of the crossbar (20), two fixed rods (24) are fixed between the fixed rods (21), a fixed plate (26) is fixed on the lower surface of the two fixed rods (24), an L-shaped fixed plate (23) is provided in the middle of the fixed plate (26), an etching liquid output device (25) is fixed to one end of the return plate (2), one end of the etching liquid output device (25) is connected to a hose (22), one end of the hose (22) is connected to a spray assembly, the spray assembly includes a nozzle (5), a nozzle (6) and an output nozzle. The delivery pipe (7) is annular in shape, and the interior of the delivery pipe (7) is hollow. The left and right sides of the delivery pipe (7) are provided with nozzle one (5) and nozzle two (6). The nozzle two (6) is located above the nozzle one (5). The interiors of the nozzle one (5) and nozzle two (6) are hollow. Spray heads (27) are provided at both ends of the nozzle one (5) and nozzle two (6). Two nozzle ones (5) and a collecting box (4) are fixed above the delivery pipe (7). The collecting box (4) is provided between the two nozzle ones (5). The length of the nozzle one (5) is greater than that of the nozzle two (6). Two nozzle ones (5) and two nozzle twos (6) are provided below the delivery pipe (7). The nozzle one (5) and nozzle two (6) are spaced apart below the delivery pipe (7). Side plates (9) are fixed to the outer surfaces of both sides of the upright column (19), a notch is provided on the upper portion of the side plate (9), a reflow groove (11) is fixed to one side of the side plate (9), a transmission assembly is provided inside the reflow groove (11), and an etching liquid recovery assembly is provided between the two side plates (9).

2. The film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards according to claim 1, characterized in that: The transmission assembly comprises an auxiliary wheel (1), a rotating shaft (10), a rotating shaft (12), a slide rail (13), a belt (14), a pulley (15), a pressure wheel (16) and a motor (17). The rotating shaft (10) and the rotating shaft (12) are rotatably arranged inside the reflow groove (11). The middle sleeve of the rotating shaft (10) is provided with a pressure wheel (16). The middle sleeve of the rotating shaft (12) is provided with a pulley (15). Two parallel slide rails (13) are provided between the two reflow grooves (11). The belt (14) is sleeved on the outside of the pulley (15) and the auxiliary wheel (1). The pressure wheel (16) is rotatably arranged on the outside of the belt (14). One end of the rotating shaft (12) is connected to the motor (17). The motor (17) is fixed on the outer surface of the reflow groove (11).

3. The film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards according to claim 1, characterized in that: The etching liquid recovery assembly comprises a reflux plate (2), an anti-overflow plate (3) and a collection box (4); the two reflux plates (2) are arranged in an inclined manner; the upper surface of one end of the reflux plate (2) is fixed below the reflux groove (11); the anti-overflow plate (3) is fixed on both sides of the reflux plate (2); the collection box (4) is slidably installed between the two reflux plates (2); and the lower surface of the collection box (4) is arranged in a wavy manner.

4. The film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards according to claim 1, characterized in that: The base (18) is circular in shape, and the lower portion of the side plate (9) is fixedly connected to the outer surface of the column (19) and the fixing rod (21).

5. The film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards according to claim 1, characterized in that: The lower portion of the delivery pipe (7) is fixed to the return plate (2) via a fixing column (28), and a nozzle (27) is provided on the inner ring surface of the delivery pipe (7).

6. The film stripping, etching and tin stripping machine for multi-layer high-precision circuit boards according to claim 2, characterized in that: A circuit board placement box (8) is provided above the slide rail (13) and the belt (14), and a rectangular hole is provided on the outer surface of the circuit board placement box (8).

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