Inner layer developing etching continuous annealing film machine

Abstract

The utility model discloses an inner layer developing etching continuous membrane machine relates to the field of circuit board processing. This inner layer developing etching continuous membrane machine, including the board unit that connects gradually, developing unit, new liquid washing unit, first overflow water washing unit, first inspection unit, vacuum etching unit, two fluid vacuum etching unit, water washing unit, second overflow water washing unit, second inspection unit, membrane unit, third overflow water washing unit, pickling unit, fourth overflow water washing unit, dry board combination unit and board unit, still include the conveying system of through between each unit, and the control system for controlling equipment operation. This inner layer developing etching continuous membrane machine, through the integration design of connecting board unit, developing unit to the integrated design of board unit gradually, integrates developing, etching, membrane and so on and integrates into a continuous flow, reduces the plate transport time, and the production efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, specifically to an inner layer developing, etching, and stripping machine. Background Technology

[0002] In the inner layer processing of multilayer printed circuit boards (PCBs), key processes such as development, etching, and film removal must be completed sequentially to form high-precision inner layer circuitry.

[0003] Traditional processing equipment suffers from fragmented processes and independent operation of each processing unit, resulting in long transfer times between processes for the boards. Furthermore, the parameters of each unit (such as spray pressure, processing time, and cleaning effect) are difficult to control collaboratively, leading to uneven line accuracy, low production efficiency, and poor quality stability. At the same time, traditional equipment lacks a centralized control system, making real-time monitoring and remote maintenance difficult, further hindering the intelligent and large-scale production of inner layers in multilayer boards. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an inner layer developing, etching, and stripping machine, which solves the problems of low production efficiency, insufficient processing accuracy, and inconvenient control caused by the dispersed processes and poor coordination of existing inner layer developing, etching, and stripping equipment.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an inner layer developing, etching, and stripping machine, comprising a board feeding unit, a developing unit, a new liquid washing unit, a first overflow water washing unit, a first inspection unit, a vacuum etching unit, a two-fluid vacuum etching unit, a water-stop washing unit, a second overflow water washing unit, a second inspection unit, a stripping unit, a third overflow water washing unit, an acid washing unit, a fourth overflow water washing unit, a dry board assembly unit, and a board output unit, connected in sequence. It also includes a conveyor system that runs through the units, as well as a control system for controlling the operation of the equipment.

[0006] Preferably, the conveying system includes several conveying rollers with a diameter of 32mm and a wheelbase of 25mm. The conveying surface height of the conveying rollers is 1100mm±25mm, the conveying surface width is 860mm, the effective conveying width is 750mm, and the conveying speed can be adjusted within the range of 1.0~7.0 meters / minute.

[0007] Preferably, the control system includes a PLC controller, which is equipped with a central networking function and an Ethernet interface.

[0008] Preferably, the developing unit includes at least two developing tanks, each of which is equipped with a spray assembly, and the spray pressure of the spray assembly is 1.5~2.5 kgf / cm².

[0009] Preferably, the vacuum etching unit includes at least three vacuum etching tanks, each of which is equipped with a spraying component with a spraying pressure of 1.0~2.5 kgf / cm².

[0010] Preferably, the film removal unit includes at least three film removal grooves, and each film removal groove is equipped with a spraying component with a spraying pressure of 1.0~2.8 kgf / cm².

[0011] Preferably, the first overflow washing unit, the second overflow washing unit, the third overflow washing unit, and the fourth overflow washing unit each include several washing tanks and are equipped with transparent filter barrels and mesh or cotton core filter components.

[0012] Preferably, the dry plate assembly unit includes a high-pressure air knife, a high-pressure hot air knife, and a HEPA filter. The high-pressure air knife and the high-pressure hot air knife are equipped with a UCE turbocharger fan, and the HEPA filter has a filtration accuracy of 5μm ± 0.3μm.

[0013] Preferably, the two-fluid vacuum etching unit is equipped with two sets of main exhaust pipe condensation boxes and a vacuum etching tank, and the vacuum etching tank has a built-in spray component with a spray pressure of 1.0~2.5 kgf / cm².

[0014] Preferably, the pickling unit includes a pickling tank, and the pickling tank is equipped with a spraying assembly.

[0015] Its beneficial effects are as follows: 1. This inner layer developing, etching, and stripping machine integrates the developing, etching, and stripping processes into a continuous flow through an integrated design that connects the board entry unit, developing unit, and board exit unit in sequence. This reduces the board transfer time and, combined with an adjustable conveyor speed of 1.0~7.0 meters / minute, significantly improves production efficiency.

[0016] 2. This inner layer developing, etching, and stripping machine uses rollers with a diameter of 32mm and a wheelbase of 25mm in its conveying system. Combined with a conveying surface height of 1100mm±25mm and an effective width of 750mm, it ensures stable conveying of boards of different specifications and reduces deviation. The spray pressure settings of 1.5~2.5kgf / cm² in the developing unit, 1.0~2.5kgf / cm² in the vacuum etching unit, and 1.0~2.8kgf / cm² in the stripping unit, along with the multi-tank design, ensure uniform developing, etching, and stripping effects. The two-fluid vacuum etching unit can achieve fine copper etching of approximately 8μm. The first, second, third, and fourth overflow water washing units are equipped with transparent filter barrels and mesh / cotton core filter components to effectively remove impurities and avoid secondary pollution. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the plate-entry unit to the water-stop washing unit of this utility model; Figure 3 This is a structural schematic diagram of the second overflow water washing unit to the outlet plate unit of this utility model.

[0019] In the diagram: 1. Board loading unit; 2. Developing unit; 3. New liquid washing unit; 4. First overflow water washing unit; 5. First inspection unit; 6. Vacuum etching unit; 7. Two-fluid vacuum etching unit; 8. Water-stopping washing unit; 9. Second overflow water washing unit; 10. Second inspection unit; 11. Film removal unit; 12. Third overflow water washing unit; 13. Acid washing unit; 14. Fourth overflow water washing unit; 15. Dry board assembly unit; 16. Board unloading unit. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] This utility model discloses an inner layer developing, etching, and stripping machine, according to the appendix... Figure 1-3 As shown, the assembly includes, in sequence, the following units: board entry unit 1, developing unit 2, new liquid washing unit 3, first overflow water washing unit 4, first inspection unit 5, vacuum etching unit 6, two-fluid vacuum etching unit 7, water-stop washing unit 8, second overflow water washing unit 9, second inspection unit 10, film removal unit 11, third overflow water washing unit 12, acid washing unit 13, fourth overflow water washing unit 14, dry board assembly unit 15, and board exit unit 16. It also includes a conveyor system that runs through the units, as well as a control system for controlling the operation of the equipment.

[0023] The conveying system includes several conveying rollers with a diameter of 32mm and a wheelbase of 25mm. The conveying surface height of the conveying rollers is 1100mm±25mm, the conveying surface width is 860mm, the effective conveying width is 750mm, and the conveying speed can be adjusted within the range of 1.0~7.0 meters / minute.

[0024] By connecting the board input unit 1, the developing unit 2 and the board output unit 16 in sequence, the developing, etching and stripping processes are integrated into a continuous process, reducing the board transfer time. With an adjustable conveying speed of 1.0~7.0 meters / minute, production efficiency is significantly improved.

[0025] The control system includes a PLC controller, which is equipped with a central networking function and an Ethernet interface.

[0026] The developing unit 2 includes at least two developing tanks, each of which is equipped with a spray assembly with a spray pressure of 1.5~2.5 kgf / cm².

[0027] The vacuum etching unit 6 includes at least three vacuum etching tanks, each of which is equipped with a spray assembly with a spray pressure of 1.0~2.5 kgf / cm².

[0028] The film removal unit 11 includes at least three film removal tanks, and each film removal tank is equipped with a spraying component with a spraying pressure of 1.0~2.8 kgf / cm².

[0029] The first overflow washing unit 4, the second overflow washing unit 9, the third overflow washing unit 12, and the fourth overflow washing unit 14 each include several washing tanks and are equipped with transparent filter barrels and mesh or cotton core filter components.

[0030] The dry plate assembly unit 15 includes a high-pressure air knife, a high-pressure hot air knife, and a HEPA filter. The high-pressure air knife and the high-pressure hot air knife are equipped with a UCE turbocharger fan, and the HEPA filter has a filtration accuracy of 5μm+0.3μm.

[0031] In the dry plate assembly unit 15, the air outlet of the UCE turbocharger fan is connected to the air inlet of the high-pressure air knife and the high-temperature air knife using a flexible metal duct. The flexible metal duct has good flexibility and corrosion resistance, which can not only effectively buffer the vibration generated by the operation of the fan and prevent damage to the air knife, but also adapt to the complex spatial layout inside the equipment, making it easy to install and maintain. The HEPA filter is installed at the air inlet of both the high-power air knife and the high-heat air knife, and is connected to them via a sealed duct. Specifically, the filter's outlet connects to the front end of the flexible metal duct that connects to the air knife. The connection is sealed with a rubber ring and further reinforced with clamps to ensure that all air entering the air knife undergoes rigorous filtration by the HEPA filter.

[0032] The two-fluid vacuum etching unit 7 is equipped with two sets of main exhaust pipe condensation boxes and a vacuum etching tank. The vacuum etching tank has a built-in spray assembly with a spray pressure of 1.0~2.5 kgf / cm².

[0033] Pickling unit 13 includes a pickling tank, and a spraying assembly is provided inside the pickling tank.

[0034] By connecting the board input unit 1, the developing unit 2 and the board output unit 16 in sequence, the developing, etching and stripping processes are integrated into a continuous process, reducing the board transfer time. With an adjustable conveying speed of 1.0~7.0 meters / minute, production efficiency is significantly improved.

[0035] The conveying system uses rollers with a diameter of 32mm and a wheelbase of 25mm, combined with a conveying surface height of 1100mm±25mm and an effective width of 750mm, to ensure stable conveying of different specifications of boards and reduce deviation. The spray pressure settings of 1.5~2.5kgf / cm² in the developing unit 2, 1.0~2.5kgf / cm² in the vacuum etching unit 6, and 1.0~2.8kgf / cm² in the film removal unit 11, combined with the multi-tank design, ensure uniform developing, etching, and film removal effects. Among them, the two-fluid vacuum etching unit 7 can achieve fine copper etching of about 8μm. The first overflow water washing unit 4, the second overflow water washing unit 9, the third overflow water washing unit 12, and the fourth overflow water washing unit 14 are equipped with transparent filter barrels and mesh plate / cotton core filter components to effectively remove impurities and avoid secondary pollution.

[0036] When the equipment is working, the control system coordinates the operation of each unit, and the conveying system drives the sheet metal to be processed continuously according to the following process: The board receiving unit 1 receives the board to be processed and conveys it to the next unit; the developing unit 2 completes the developing process at 28~32℃ through the spray assembly of at least two developing tanks; the fresh liquid washing unit 3 uses fresh liquid to perform preliminary cleaning of the board; the first overflow water washing unit 4 deeply removes residual developing solution through multiple water washing tanks and a transparent filter barrel with mesh plate / cotton core; the first inspection unit 5 performs online inspection of the developing effect; the vacuum etching unit 6 completes the etching process at 48~52℃ through the spray assembly of at least three vacuum etching tanks; the two-fluid vacuum etching unit 7 completes fine copper etching through the spray assembly and two sets of main exhaust pipe condensation boxes; The water-stopping unit 8 stops the water washing process to prepare for subsequent cleaning; the second overflow water washing unit 9 cleans again to remove residual etching solution; the second inspection unit 10 checks the etching effect; the film removal unit 11 completes the film removal with the spray assembly of at least three film removal tanks; the third overflow water washing unit 12 cleans the residual film removal solution; the acid pickling unit 13 performs acid pickling through the spray assembly of the acid pickling tank; the fourth overflow water washing unit 14 performs final cleaning to remove acid pickling residue; the dry board assembly unit 15 uses a strong air knife, a strong hot air knife and a HEPA filter to dry and clean the board; the board output unit 16 outputs the processed board.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An inner layer developing, etching, and stripping film removal machine, characterized in that, The system includes, in sequence, a board entry unit (1), a developing unit (2), a new liquid washing unit (3), a first overflow water washing unit (4), a first inspection unit (5), a vacuum etching unit (6), a two-fluid vacuum etching unit (7), a water-stop washing unit (8), a second overflow water washing unit (9), a second inspection unit (10), a film removal unit (11), a third overflow water washing unit (12), an acid washing unit (13), a fourth overflow water washing unit (14), a dry board assembly unit (15), and a board exit unit (16). It also includes a conveyor system that runs through the units, as well as a control system for controlling the operation of the equipment.

2. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The conveying system includes several conveying rollers with a diameter of 32mm and a wheelbase of 25mm. The conveying surface height of the conveying rollers is 1100mm±25mm, the conveying surface width is 860mm, the effective conveying width is 750mm, and the conveying speed can be adjusted within the range of 1.0~7.0 meters / minute.

3. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The control system includes a PLC controller, which is equipped with a central networking function and an Ethernet interface.

4. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The developing unit (2) includes at least two developing tanks, each of which is equipped with a spray assembly, and the spray pressure of the spray assembly is 1.5~2.5 kgf / cm².

5. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The vacuum etching unit (6) includes at least three vacuum etching tanks, each of which is equipped with a spray assembly with a spray pressure of 1.0~2.5 kgf / cm².

6. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The film removal unit (11) includes at least three film removal tanks, and each film removal tank is equipped with a spraying component with a spraying pressure of 1.0~2.8 kgf / cm².

7. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The first overflow water washing unit (4), the second overflow water washing unit (9), the third overflow water washing unit (12), and the fourth overflow water washing unit (14) each include several water washing tanks and are equipped with transparent filter barrels and mesh or cotton core filter components.

8. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The dry plate assembly unit (15) includes a high-pressure air knife, a high-temperature air knife, and a HEPA filter. The high-pressure air knife and the high-temperature air knife are equipped with a UCE turbocharger fan, and the HEPA filter has a filtration accuracy of 5μm+0.3μm.

9. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The two-fluid vacuum etching unit (7) is equipped with two sets of main exhaust pipe condensation boxes and a vacuum etching tank. The vacuum etching tank has a built-in spray component with a spray pressure of 1.0~2.5 kgf / cm².

10. The inner layer developing, etching, and stripping machine according to claim 1, characterized in that, The pickling unit (13) includes a pickling tank, and a spraying assembly is provided inside the pickling tank.

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