HDI printed circuit board copper foil brown processing equipment

Abstract

The application discloses a kind of HDI printed circuit board copper foil brown processing equipment.The technical problem to be solved is that rolling soft brush adheres a lot of corrosion products, cleaning capacity is greatly reduced, and the liquid phase mass transfer intensification effect of brown processing liquid is general.The technical scheme is that a kind of HDI printed circuit board copper foil brown processing equipment includes cleaning mechanism and washing mechanism;washing mechanism is connected with cleaning mechanism.The application realizes that the bristles wound together are preliminarily dispersed by the separation plate on the separator, when the separation plate and the separation block rotate counterclockwise to contact the bristles of the soft brush entering the inside of the separator, the bristles are further separated and dispersed by the separation plate and the separation block, and the corrosion products adhered to the bristles are also tapped to separate from the bristles.

Description

Technical Field

[0001] This invention relates to the field of printed circuit boards, and more particularly to a copper foil browning treatment device for HDI printed circuit boards. Background Technology

[0002] HDI printed circuit board copper foil browning refers to the process of micro-etching the copper surface to generate an extremely thin, uniform organometallic conversion film, which enhances the bonding force between the inner copper layer and the resin, and improves the laminate's resistance to thermal shock and delamination.

[0003] Chinese patent application number 202110018166.6 discloses a copper foil browning device for HDI printed circuit boards with a rolling soft brush. This device uses the rotation of the soft brush to ensure uniform corrosion of the HDI board copper foil surface placed within the browning line, effectively removing loose corrosion products. However, because the rolling soft brush itself adheres to a large amount of corrosion products during cleaning, and these accumulated products significantly reduce the cleaning ability and effectiveness of the rolling soft brush, even affecting the normal browning of the HDI printed circuit board copper foil and failing to achieve its intended effect; further... The device mentions that by rotating the brush, the liquid-phase mass transfer of the browning treatment solution on the copper foil surface is enhanced, thereby effectively strengthening the copper foil corrosion process during browning. The liquid-phase mass transfer of the organic film-forming reaction on the copper foil surface is updated in a timely manner. Under the premise of ensuring the microstructure and mechanical bonding of the browning film layer, the rate of corrosion reaction and film-forming reaction is promoted. However, the enhancement effect of the liquid-phase mass transfer of the browning treatment solution is limited, and the relative flow effect between solutions at different locations is generally poor. At the same time, due to the large amount of corrosion products adhering to the brush itself, the liquid-phase mass transfer effect of the browning treatment solution is further reduced. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and to provide an HDI printed circuit board copper foil browning treatment device that can clean the corrosion products adhering to the soft brush and enhance the liquid phase mass transfer enhancement effect of the browning treatment solution.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a copper foil browning treatment device for HDI printed circuit boards, comprising a browning line; further comprising a cleaning mechanism, a washing mechanism, and a circulating separation mechanism; the browning line is provided with a cleaning mechanism for cleaning residues during the browning of the circuit board copper foil; the browning line is provided with a washing mechanism for washing the cleaning mechanism; the washing mechanism is connected to the cleaning mechanism; a circulating separation mechanism for water circulation and slag removal is installed on the rear side of the browning line; the circulating separation mechanism is connected to the washing mechanism.

[0006] Furthermore, the cleaning mechanism includes a servo motor, a first connecting shaft, a soft brush, a first bevel gear, fan blades, and a second bevel gear; a servo motor is installed on the front inner side of the browning line; the output end of the servo motor is fixedly connected to the first connecting shaft; a soft brush is fixedly connected to the outer surface of the first connecting shaft; several first bevel gears are equidistantly arranged from front to back along the inner axis of the soft brush; several fan blades are equidistantly arranged from front to back inside the browning line; each of the fan blades is fixedly connected to a second bevel gear; the several second bevel gears mesh with adjacent first bevel gears respectively; the first connecting shaft is connected to the washing mechanism.

[0007] Furthermore, the soft brush has a hollow cavity inside and several air holes on its surface.

[0008] Furthermore, the fan blades are angled relative to the circuit board.

[0009] Furthermore, the washing mechanism includes a first spur gear, a second connecting shaft, a sedimentation cleaning tank, a separator, a slip ring, a limiting rod, elastic elements, a connecting plate, a separating plate, and a separating block; the first spur gear is fixedly connected to the front side of the outer surface of the first connecting shaft; the second connecting shaft is rotatably connected to the inner side of the browning line; the second spur gear is fixedly connected to the rear side of the outer surface of the second connecting shaft; the second spur gear meshes with the first spur gear; the sedimentation cleaning tank is fixedly connected inside the browning line, and a recess is provided on the left side of the sedimentation cleaning tank; the separator is fixedly connected to the right side of the sedimentation cleaning tank; the separator is connected to a circulating separation mechanism; the sedimentation cleaning tank is connected to the circulating separation mechanism; a slip ring is slidably connected to the second connecting shaft; a limiting rod is fixedly connected inside the browning line; the limiting rod slides in a slide rail on the outer surface of the slip ring; two elastic elements are fixedly connected to the second connecting shaft; the two elastic elements are respectively fixedly connected to adjacent slip rings; three connecting plates arranged in a ring array are fixedly connected to the slip ring; each of the three connecting plates is movably connected to a separating plate; and each of the three connecting plates is fixedly connected to a separating block.

[0010] Furthermore, the separator is arranged in an arc shape, and has several equally spaced separation plates.

[0011] Furthermore, the outer surface of the slip ring has a wavy shape.

[0012] Furthermore, the separation plate and separation block are arranged in a staggered manner.

[0013] Furthermore, the circulating separation mechanism includes a flushing pipe, a drain pipe, an inlet pipe, an outlet pipe, a water tank, a first pump, a second pump, and a filter cloth; several flushing pipes are installed through the separator; several drain pipes are installed through the sedimentation and cleaning tank; a water tank is installed behind the browning line; an inlet pipe is installed between the water tank and several flushing pipes; an outlet pipe is installed between the water tank and several drain pipes; a filter cloth is installed inside the water tank; a second pump is installed inside the water tank; the second pump is connected to the outlet pipe; a first pump is installed inside the water tank; the first pump is connected to the inlet pipe.

[0014] Furthermore, the outlet of the second pump is located above the filter cloth, while the inlet of the first pump is located below the filter cloth.

[0015] Beneficial effects: The present invention achieves the initial dispersion of tangled brush bristles by the separation plate on the separator. When the separation plate and separation block rotate counterclockwise to contact the brush bristles of the soft brush that has entered the inner side of the separator, the brush bristles are further separated and dispersed by the separation plate and separation block. At the same time, the corrosion products adhering to the brush bristles are tapped to separate them from the brush bristles. The slip ring completes a short-distance reciprocating motion, so that after the separation plate and separation block come into contact with the bristles, the separation plate and separation block continuously strike the bristles and disperse them, thereby knocking off the corrosion products adhering to the bristles. In order to further disperse the bristles, the separation plate and separation block are staggered to each other, thus ensuring the dispersion effect of the bristles. Cleaning water is sprayed upwards from several flushing pipes, which then washes away the corrosion products adhering to the bristles. The corrosion products are then filtered through the filter cloth, so that they are located on the filter cloth. The first pump can only draw water from below the filter cloth, thereby achieving the filtration and separation of the corrosion products. The separation plate and separation block squeeze the water adsorbed on the bristles to clean them, preventing excessive water adsorbed on the bristles from contacting the circuit board and affecting the browning process of the circuit board. The tiny airflow generated by the rotating fan blades is discharged through the vents and creates a blowing effect on the browning treatment solution on the circuit board surface, making the relative flow of the browning treatment solution more obvious. This enhances the liquid-phase mass transfer effect of the browning treatment solution, thereby effectively strengthening the copper foil corrosion process during browning. The liquid-phase mass transfer of the organic film-forming reaction on the copper foil surface is updated in a timely manner. While ensuring the microstructure and mechanical bonding of the browning film layer, it promotes the rate of corrosion reaction and film-forming reaction, improves the efficiency of the browning production process, and helps to reduce production costs. Attached Figure Description

[0016] These and other features of the present disclosure will be more readily understood from the detailed description of various embodiments thereof in conjunction with the accompanying drawings, in which: Figure 1 This is a three-dimensional structural schematic diagram of the HDI printed circuit board copper foil browning treatment equipment of the present invention. Figure 2 This is a partial top view of the present invention; Figure 3 This is a schematic diagram of the first partial three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the second partial three-dimensional structure of the present invention; Figure 5 This is a schematic diagram of the third partial three-dimensional structure of the present invention; Figure 6 This is a schematic diagram of the fourth partial three-dimensional structure of the present invention; Figure 7 This is a schematic diagram of the fifth partial three-dimensional structure of the present invention; Figure 8 This is an enlarged view of area A of the present invention; Figure 9 This is a three-dimensional structural diagram of the water washing mechanism of the present invention; Figure 10 This is a three-dimensional structural diagram of the cleaning mechanism of the present invention; Figure 11 This is a schematic diagram of the sixth partial three-dimensional structure of the present invention; Figure 12 This is a three-dimensional structural diagram of the circulating separation mechanism of the present invention; Figure 13 This is a cross-sectional view of the cyclic separation mechanism of the present invention.

[0017] Component names and serial numbers in the diagram: 1-browning line, 2-circuit board, 301-servo motor, 302-first connecting shaft, 303-soft brush, 304-first spur gear, 305-second connecting shaft, 306-second spur gear, 307-deposition cleaning tank, 30701-recessed part, 308-separator, 309-slip ring, 3010-limiting rod, 3011-elastic element, 3012-connecting plate, 3013-separation plate, 3014-separation block, 3015-first bevel gear, 3016-fan blade, 3017-second bevel gear, 3018-flushing pipe, 3019-drain pipe, 3020-inlet pipe, 3021-outlet pipe, 3022-water tank, 3023-first pump, 3024-second pump, 3025-filter cloth. Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] like Figures 1-13 As shown, an HDI printed circuit board 2 copper foil browning treatment equipment includes a browning line 1; It also includes a cleaning mechanism, a water washing mechanism, and a circulation separation mechanism; the browning line 1 is equipped with a circuit board 2 cleaning mechanism; the browning line 1 is equipped with a water washing mechanism; the water washing mechanism is connected to the cleaning mechanism; a circulation separation mechanism for water circulation and slag removal is installed on the rear side of the browning line 1; the circulation separation mechanism is connected to the water washing mechanism.

[0020] The cleaning mechanism includes a servo motor 301, a first connecting shaft 302, a soft brush 303, a first bevel gear 3015, fan blades 3016, and a second bevel gear 3017. The servo motor 301 is installed on the front inner side of the browning line 1. The output end of the servo motor 301 is fixedly connected to the first connecting shaft 302. The soft brush 303 is fixedly connected to the outer surface of the first connecting shaft 302. Several first bevel gears 3015 are equidistantly arranged from front to back on the inner axis of the soft brush 303. Several fan blades 3016 are equidistantly arranged from front to back inside the browning line 1. A second bevel gear 3017 is fixedly connected to each of the fan blades 3016. The several second bevel gears 3017 mesh with the adjacent first bevel gears 3015 respectively. The first connecting shaft 302 is connected to a water washing mechanism. The servo motor 301 drives the soft brush 303 to rotate, thereby cleaning the loose residue of the copper foil browning on the surface of the circuit board 2.

[0021] The soft brush 303 has a hollow cavity inside, and the surface of the soft brush 303 has several air holes.

[0022] The fan blade 3016 is set at an angle to the circuit board 2.

[0023] The washing mechanism includes a first spur gear 304, a second connecting shaft 305, a second spur gear 306, a sedimentation cleaning tank 307, a separator 308, a slip ring 309, a limiting rod 3010, an elastic element 3011, a connecting plate 3012, a separating plate 3013, and a separating block 3014; the first spur gear 304 is fixedly connected to the front side of the outer surface of the first connecting shaft 302; the second connecting shaft 305 is rotatably connected to the inner side of the browning line 1; the second spur gear 306 is fixedly connected to the rear side of the outer surface of the second connecting shaft 305; the second spur gear 306 meshes with the first spur gear 304; the sedimentation cleaning tank 307 is fixedly connected inside the browning line 1, and a recess 30701 is provided on the left side of the sedimentation cleaning tank 307; the separator 308 is fixedly connected to the right side of the sedimentation cleaning tank 307; the separator 308 is connected to a circulating separation mechanism; the sedimentation cleaning tank 307 is fixedly connected to the right side of the sedimentation cleaning tank 307; the separator 308 is connected to a circulating separation mechanism; the sedimentation cleaning tank 307 is fixedly connected to the first spur gear 304; the sedimentation cleaning tank 307 is rotatably connected to the second connecting shaft 305; the sedimentation cleaning tank 307 is rotatably connected to the second connecting shaft 305; the sedimentation cleaning tank 307 is rotatably connected to the first ... The cleaning tank 307 is connected to the circulating separation mechanism; a slip ring 309 is slidably connected to the second connecting shaft 305; a limit rod 3010 is fixed inside the browning line 1; the limit rod 3010 slides in the slide rail on the outer surface of the slip ring 309; two elastic elements 3011 are fixed to the second connecting shaft 305; the two elastic elements 3011 are respectively fixed to the adjacent slip ring 309; three connecting plates 3012 arranged in a ring array are fixed to the slip ring 309; a separation plate 3013 is movably connected to each of the three connecting plates 3012; a separation block 3014 is fixed to each of the three connecting plates 3012; the slip ring 309 causes the separation plates 3013 and the separation blocks 3014 to move back and forth continuously, and then the bristles of the soft brush 303 are dispersed and separated by the separation plates 3013 and the separation blocks 3014.

[0024] The separator 308 is arranged in an arc shape, and there are several equally spaced separation plates 3013 on the separator 308.

[0025] The outer surface of the slip ring 309 has a wavy shape.

[0026] The elastic element 3011 is a spring.

[0027] The separation plate 3013 and the separation block 3014 are arranged in a staggered manner.

[0028] The circulating separation mechanism includes a flushing pipe 3018, a drain pipe 3019, an inlet pipe 3020, an outlet pipe 3021, a water tank 3022, a first pump 3023, a second pump 3024, and a filter cloth 3025; several flushing pipes 3018 are installed through the separator 308; several drain pipes 3019 are installed through the sedimentation cleaning tank 307; a water tank 3022 is installed behind the browning line 1; an inlet pipe 3020 is provided between the water tank 3022 and the several flushing pipes 3018; An outlet pipe 3021 is provided between the water tank 3022 and several drain pipes 3019; a filter cloth 3025 is provided inside the water tank 3022; a second pump 3024 is installed inside the water tank 3022; the second pump 3024 is connected to the outlet pipe 3021; ​​a first pump 3023 is installed inside the water tank 3022; the first pump 3023 is connected to the inlet pipe 3020; the water is circulated by the first pump 3023 and the second pump 3024 to continuously clean the soft brush 303.

[0029] The outlet of the second pump 3024 is located above the filter cloth 3025, and the inlet of the first pump 3023 is located below the filter cloth 3025.

[0030] During the browning of copper foil on HDI printed circuit board 2, HDI printed circuit board 2 is transported in browning line 1 from left to right. During the browning process of circuit board 2, it is necessary to clean the corrosion products on the surface of circuit board 2 to accelerate the reaction rate between the browning solution and circuit board 2, thereby accelerating the reaction rate of organic film formation and corrosion reaction on the copper foil surface. While using soft brush 303 to achieve the above purpose, the soft brush 303 itself will also adhere to a large amount of corrosion products, affecting its own cleaning effect and the liquid phase mass transfer effect of the browning solution, thus affecting the subsequent continuous browning process of circuit board 2. Therefore, to address the above issues, on the one hand, it is necessary to clean the corrosion products and accelerate the film formation reaction rate, while also cleaning the soft brush 303 itself; on the other hand, it is necessary to solve the problem of simply using soft brush 303 to enhance the liquid phase mass transfer effect of the browning solution and improve the browning rate of the circuit board. Therefore, the following is a specific solution to the above problems.

[0031] When the circuit board 2 passes the soft brush 303, the servo motor 301 starts working. Using a front-to-back view as a reference, the servo motor 301 drives the first connecting shaft 302 to rotate clockwise. As the first connecting shaft 302 rotates, it simultaneously drives the soft brush 303 to rotate clockwise, causing the soft brush 303 to contact the surface of the circuit board 2. When the soft brush 303 is in direct contact with the circuit board 2, the bristles of the soft brush 303 slightly bend, slowly rubbing the copper foil surface. This ensures uniform corrosion of the copper foil surface of the circuit board 2, effectively removing loose corrosion products. At this time, a large amount of corrosion products adhere to the bristles of the soft brush 303, requiring cleaning. When the separator 308 is rotated, its arc shape and the presence of equidistant separation plates 3013 allow the bristles of the soft brush 303 to gradually enter the separator 308. The separation plates 3013 then initially disperse the tangled bristles. Simultaneously, as the first connecting shaft 302 rotates, it drives the first spur gear 304 to rotate, which in turn drives the second spur gear 306 to rotate counter-clockwise. Because the first and second spur gears are rotated at different speeds, the second spur gear 306 rotates at a faster rate than the first spur gear 304. At this point, the second spur gear 306 drives the second connecting shaft 305 to rotate counterclockwise. Then, the second connecting shaft 305 drives the slip ring 309, elastic element 3011, connecting plate 3012, separating plate 3013, and separating block 3014 to rotate counterclockwise. When the separating plate 3013 and separating block 3014 rotate counterclockwise until they contact the bristles of the soft brush 303 inside the separator 308, the separating plate 3013 and separating block 3014 further separate and disperse the bristles. Simultaneously, they beat away any corrosion products adhering to the bristles, separating them from the bristles. Meanwhile, to ensure more thorough dispersion of the bristles, when the slip ring 309 rotates, the outer surface of the slip ring 309 has a wavy shape, which, through the limiting rod 30... 10 moves along the wave-shaped slide rail and limits the slip ring 309, so that when the slip ring 309 rotates, it is limited by the limiting rod 3010 and continuously completes short-distance reciprocating motion, that is, the slip ring 309 stretches the elastic element 3011 and then resets under the action of the elastic force of the elastic element 3011 to complete the above-mentioned short-distance reciprocating motion. This means that after the separation plate 3013 and the separation block 3014 come into contact with the bristles, the separation plate 3013 and the separation block 3014 continuously hit the bristles and disperse the bristles, thereby knocking off the corrosion products adhering to the bristles. In order to further disperse the bristles, the separation plate 3013 and the separation block 3014 are staggered to each other, thereby ensuring the dispersion effect of the bristles.

[0032] During the process of fully dispersing the bristles, the first pump 3023 and the second pump 3024 start working synchronously. The first pump 3023 inputs the cleaning water from the water tank 3022 into the inlet pipe 3020, and then diverts it from the inlet pipe 3020 to several flushing pipes 3018. The cleaning water is then sprayed upwards from the flushing pipes 3018, thereby rinsing and cleaning the corrosion products adhering to the bristles, further cleaning the bristles so that they remain clean when in contact with the circuit board 2. This ensures the cleaning ability of the bristles on the surface of the circuit board 2. The corrosion products washed off automatically fall into the sedimentation cleaning tank 307 along with the wastewater. At the same time, to prevent sedimentation, the cleaning tank automatically removes the corrosion products. A large amount of corrosion products are deposited inside the washing tank 307. Therefore, a recessed part 30701 is provided inside the sedimentation washing tank 307 so that the corrosion products are automatically deposited into the recessed part 30701. At the same time, under the action of the second pump 3024, the sewage is discharged from several drain pipes 3019 into the outlet pipe 3021, and then discharged from another outlet of the second pump 3024. The discharged sewage contains a large amount of corrosion products. In order to prevent the clean water drawn by the first pump 3023 from containing corrosion products, the corrosion products are filtered through the filter cloth 3025 so that the corrosion products are located on the filter cloth 3025, and the first pump 3023 can only draw water from below the filter cloth 3025, thereby achieving the filtration and separation of corrosion products.

[0033] As the bristles rotate, when they come into contact with the lower side of the separation plate 3013 on the separator 308, they are obstructed by the separation plate 3013, causing the bristles to bend upwards. Since the initial state contains a suitable amount of cleaning water, and several flushing pipes 3018 spray cleaning water, further cleaning of the corrosion products on the bristles is necessary to prevent excessive water residue from adsorbing onto the bristles after washing. Therefore, when the bristles rotate from the inside to the outside of the separator 308, the residual water needs to be cleaned. Thus, when the separation plate 3013 and separation block 3014 rotate to contact the separator 308, the water is removed... Figure 8 As shown, the two are in a cooperative state, which causes the bristles to be pressed down and squeezed by the separation plate 3013 and the separation block 3014, thereby cleaning the residual water adsorbed on the bristles, preventing excessive residual water adsorbed on the bristles from contacting the circuit board 2 and affecting the browning treatment of the circuit board 2.

[0034] When the soft brush 303 enhances the liquid-phase mass transfer effect of the browning treatment solution, the cleaning of the brush bristles and corrosion products on the soft brush 303 ensures the enhanced liquid-phase mass transfer effect of the soft brush 303 on the browning treatment solution. To further enhance the liquid-phase mass transfer effect of the browning treatment solution and make the relative flow of the browning treatment solution more pronounced at different locations on the surface of the circuit board 2, when the soft brush 303 rotates, it simultaneously drives several first bevel gears 3015 to rotate. Then, the first bevel gears 3015 drive the second bevel gear 3017 to rotate, which in turn drives the fan blade 3016 to rotate. Because several pores are formed on the surface of the soft brush 303, the tiny airflow generated by the rotation of the fan blade 3016 is discharged through the pores, creating a blowing effect on the browning treatment liquid on the surface of the circuit board 2. This makes the relative flow of the browning treatment liquid more obvious, thereby enhancing the liquid-phase mass transfer effect of the browning treatment liquid. This effectively strengthens the copper foil corrosion process during browning, and the liquid-phase mass transfer of the organic film-forming reaction on the copper foil surface is updated in a timely manner. Under the premise of ensuring the microstructure and mechanical bonding of the browning film layer, the rate of corrosion reaction and film-forming reaction is promoted, the efficiency of the browning production process is improved, and production costs are reduced.

[0035] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. A copper foil browning treatment device for HDI printed circuit boards, comprising a browning line (1); Its features are, It also includes a cleaning mechanism, a water washing mechanism and a circulation separation mechanism; the browning line (1) is equipped with a cleaning mechanism for cleaning the residue during the browning of the copper foil of the circuit board (2); the browning line (1) is equipped with a water washing mechanism for washing the cleaning mechanism; the water washing mechanism is connected to the cleaning mechanism; a circulation separation mechanism for water circulation and slag removal is installed on the rear side of the browning line (1); the circulation separation mechanism is connected to the water washing mechanism. The cleaning mechanism includes a servo motor (301), a first connecting shaft (302), a soft brush (303), a first bevel gear (3015), fan blades (3016), and a second bevel gear (3017); the servo motor (301) is installed on the front inner side of the browning line (1); the first connecting shaft (302) is fixedly connected to the output end of the servo motor (301); the soft brush (303) is fixedly connected to the outer surface of the first connecting shaft (302); several first bevel gears (3015) are equidistantly arranged from front to back on the inner axis of the soft brush (303); several fan blades (3016) are equidistantly arranged from front to back inside the browning line (1); a second bevel gear (3017) is fixedly connected to each of the several fan blades (3016); the several second bevel gears (3017) mesh with the adjacent first bevel gears (3015); the first connecting shaft (302) is connected to the washing mechanism; The soft brush (303) has a hollow cavity inside, and the surface of the soft brush (303) has several air holes; The washing mechanism includes a first spur gear (304), a second connecting shaft (305), a second spur gear (306), a sedimentation cleaning tank (307), a separator (308), a slip ring (309), a limiting rod (3010), an elastic element (3011), a connecting plate (3012), a separating plate (3013), and a separating block (3014); the first spur gear (304) is fixedly connected to the front side of the outer surface of the first connecting shaft (302); the second connecting shaft (305) is rotatably connected to the inner side of the browning line (1); the second spur gear (306) is fixedly connected to the rear side of the outer surface of the second connecting shaft (305); the second spur gear (306) meshes with the first spur gear (304); the sedimentation cleaning tank (307) is fixedly connected inside the browning line (1), and a recess (30701) is provided on the left side of the sedimentation cleaning tank (307); A separator (308) is fixedly connected to the right side of the sedimentation cleaning tank (307); the separator (308) is connected to the circulating separation mechanism; the sedimentation cleaning tank (307) is connected to the circulating separation mechanism; a slip ring (309) is slidably connected to the second connecting shaft (305); a limit rod (3010) is fixedly connected inside the browning line (1); the limit rod (3010) slides in the slide rail on the outer surface of the slip ring (309); two elastic elements (3011) are fixedly connected to the second connecting shaft (305); the two elastic elements (3011) are fixedly connected to the adjacent slip ring (309) respectively; three connecting plates (3012) arranged in a ring array are fixedly connected to the slip ring (309); a separation plate (3013) is movably connected to each of the three connecting plates (3012); a separation block (3014) is fixedly connected to each of the three connecting plates (3012).

2. The HDI printed circuit board copper foil browning treatment equipment according to claim 1, characterized in that, The fan blade (3016) and the circuit board (2) are arranged at an angle.

3. The HDI printed circuit board copper foil browning treatment equipment according to claim 1, characterized in that, The separator (308) is arranged in an arc shape, and there are several equally spaced separation plates (3013) on the separator (308).

4. The HDI printed circuit board copper foil browning treatment equipment according to claim 1, characterized in that, The outer surface of the slip ring (309) has a wavy shape.

5. The HDI printed circuit board copper foil browning treatment equipment according to claim 1, characterized in that, The separation plate (3013) and the separation block (3014) are arranged in a staggered manner.

6. The HDI printed circuit board copper foil browning treatment equipment according to claim 1, characterized in that, The circulating separation mechanism includes a flushing pipe (3018), a drain pipe (3019), an inlet pipe (3020), an outlet pipe (3021), a water tank (3022), a first pump (3023), a second pump (3024), and a filter cloth (3025); several flushing pipes (3018) are installed through the separator (308); several drain pipes (3019) are installed through the sedimentation cleaning tank (307); a water tank (3022) is installed behind the browning line (1); the water tank (3022) and several An inlet pipe (3020) is provided between each flushing pipe (3018); an outlet pipe (3021) is provided between the water tank (3022) and several drain pipes (3019); a filter cloth (3025) is provided inside the water tank (3022); a second pump (3024) is installed inside the water tank (3022); the second pump (3024) is connected to the outlet pipe (3021); a first pump (3023) is installed inside the water tank (3022); the first pump (3023) is connected to the inlet pipe (3020).

7. The HDI printed circuit board copper foil browning treatment equipment according to claim 6, characterized in that, The outlet of the second pump (3024) is located above the filter cloth (3025), and the inlet of the first pump (3023) is located below the filter cloth (3025).

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