PCB hole metallization device

Abstract

The invention belongs to the technical field of integrated circuit manufacturing, and particularly relates to a PCB hole metallization device which comprises a processing box. The partition plate is fixedly connected to the middle of the treatment box; the two mounting frames are symmetrically arranged in the treatment box; the mounting mechanism is arranged on the mounting frame; the mounting mechanism comprises six cross rods rotationally connected to the mounting frame; mounting frames are fixedly connected to the two ends of the cross rod; an electromagnetic block is matched with a first spring; when the lifting frame moves to a set position above the first row of electromagnetic blocks, the first row of electromagnetic blocks are powered off, and under the action of first springs, the two clamping plates are driven to move towards the two sides, fixation of the PCB is relieved, and brushing is conducted through a brush; when the lifting block moves to a set position above the second row of electromagnetic blocks, the first row of electromagnetic blocks are powered on, the clamping plate is closed, meanwhile, the second row of electromagnetic blocks are powered off, the brush scrubs the PCB at the position, and the operation is repeated, so that the PCB is thoroughly scrubbed and deoiled, and the integrated circuit manufacturing efficiency is also improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated circuit manufacturing, and specifically relates to a PCB via metallization device. Background Art

[0002] The Chinese name of the PCB board is printed circuit board, which is one of the important components in integrated circuit manufacturing and also the support for electronic components. With the continuous improvement of the requirements for functionality, precision, and quality of electronic devices, the quality requirements for PCB boards are also getting higher and higher. During the manufacturing process of PCB boards, in order to meet the design requirements of integrated circuits, metallized through-holes need to be made on the PCB boards.

[0003] A Chinese patent with the publication number CN117395882B discloses an oil removal device for a copper deposition line in PCB board processing, including an oil removal tank, an oil removal moving mechanism, a cleaning driving mechanism, a cleaning and oil removal mechanism, and a PCB board fixing mechanism for limiting the position of the PCB board during cleaning; the oil removal tank is horizontally arranged, and the oil removal moving mechanism is located on the top of the oil removal tank; there are four PCB board fixing mechanisms, and the four PCB board fixing mechanisms are equidistantly arranged on the moving end of the oil removal moving mechanism; the cleaning driving mechanism is arranged on the side wall of the oil removal tank and is slidably matched with the oil removal tank; the PCB board is limited and fixed by the PCB board fixing mechanism. During cleaning, the PCB board is moved into the cleaning water in the oil removal tank by the operation of the oil removal moving structure for soaking first, and then the angle of the cleaning driving mechanism is changed by the operation of the cleaning driving mechanism. When cleaning the PCB board, the cleaning angle and position can be adjusted at any time according to the cleaning needs, and the residual oil and dust in the holes on the PCB board can be cleaned, making the cleaning more thorough.

[0004] In the current prior art, when the PCB board is fixed by the fixing mechanism, the fixing mechanism is always clamped on the outside of the PCB board, which may cover the holes on the PCB board, resulting in the inability to remove oil and clean these holes. During the brushing process, due to the holes being covered, the cleaning brush disc cannot penetrate into the holes, so the debris in the holes cannot be brushed off, causing incomplete cleaning of the PCB board.

[0005] Therefore, the present invention provides a PCB via metallization device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A PCB via metallization device of the present invention includes: A processing tank; A partition plate, fixedly connected to the middle of the processing box; Two mounting brackets, symmetrically arranged inside the processing box; A mounting mechanism, arranged on the mounting bracket; The mounting mechanism includes six cross bars rotatably connected to the mounting bracket; both ends of the cross bar are fixedly connected with mounting frames; the bottoms of the two mounting frames are fixedly connected with a bottom plate, and the bottom plate is provided with through holes; limiting grooves are opened on the inner side walls of the mounting frames; a plurality of sliding rods are fixedly connected in the limiting grooves; both ends of the sliding rod are sleeved with first springs; two clamping plates are symmetrically rotatably connected to the sliding rod, and both ends of the first spring are respectively fixedly connected to the clamping plate and the mounting frame; electromagnetic blocks are fixedly connected to the inner walls of one ends of the clamping plates close to the sliding rod; rubber pads are fixedly connected to the inner walls of the other ends of the clamping plates; Lifting frames are arranged on both sides of the mounting frame, and a driving mechanism is arranged on the mounting frame for driving the lifting frames to move up and down. A distance sensor is arranged on the lifting frame, and the distance sensor is electrically connected to a plurality of electromagnetic blocks.

[0008] Preferably, a plurality of mounting boxes are fixedly connected to the inner side walls of the lifting frames, a plurality of hollow tubes are fixedly connected inside the mounting boxes, second springs are arranged inside the hollow tubes, one ends of the second springs are fixedly connected with sliding plates, the sliding plates are slidably connected inside the hollow tubes, and one ends of the sliding plates are fixedly connected with brushes and extend to the outside of the mounting boxes.

[0009] Preferably, the driving mechanism includes side plates fixedly connected to both side walls of the two mounting frames; two second lead screws are respectively rotatably connected between the side plates on the same side; the lifting frames are all threadedly connected to the second lead screws, and a second motor is fixedly connected to one of the second lead screws; one ends of the lifting frames are all slidably connected with sliding rods; both ends of the sliding rods are respectively fixedly connected to the side plates on the other side; the bottoms of the second lead screws all extend below the side plates and are fixedly connected with runners; belts are sleeved between the two runners.

[0010] Preferably, one ends of the cross bars all extend to the outside of the mounting bracket and are fixedly connected with gears; a cylinder is fixedly connected to the top of the mounting bracket, the output end of the cylinder is fixedly connected with a connecting plate through a convex block, and a plurality of racks are fixedly connected to the bottom of the connecting plate, and the racks are respectively meshed with the gears below.

[0011] Preferably, two electric guide rails are installed on the top of the processing box, a moving frame is installed on each electric guide rail, an electric push rod is fixedly connected to the top of one of the moving frames, and two vertical rods are installed at the bottom of the other moving frame; connecting frames are fixedly connected to the tops of the mounting brackets; the output end of the electric push rod is fixedly connected to one of the connecting frames; the vertical rods are all slidably connected to the other connecting frame.

[0012] Preferably, a first lead screw is rotatably connected between the moving frames through bearings, and a first motor is provided at one end of the first lead screw; a moving block is threadedly connected to the first lead screw, and two guide rods are fixedly connected between the moving frames, and the moving block is slidably connected to the two guide rods; a water delivery pipe is fixedly connected to the bottom of the moving block, and a plurality of water spray pipes are fixedly connected and communicated to the bottom of the water delivery pipe.

[0013] Preferably, one end of the electric guide rail extends to one side of the processing box and is provided with a receiving box, and an air jet box is fixedly connected to the bottom of the receiving box near one end of the processing box; a water suction box is fixedly connected to the bottom of the receiving box away from one end of the processing box, and the air jet box is externally connected to a gas source through a trachea; a filter box is fixedly connected in the receiving box, and a filter plate is fixedly connected in the filter box; a drain pipe is fixedly connected and communicated to the bottom of the filter box; a water suction pipe is fixedly connected and communicated between the filter box and the water suction box; a water suction pump is installed on the water suction pipe; a water outlet pipe is fixedly connected and communicated to one end of the receiving box away from the drain pipe.

[0014] Preferably, two first flow guiding plates are symmetrically and fixedly connected to one end of the air jet box close to the water suction box; two second flow guiding plates are symmetrically and fixedly connected to one end of the water suction box close to the air jet box.

[0015] Preferably, two arc-shaped plates are fixedly connected to the top of the partition plate, and the arc-shaped plates are bent towards both ends of the processing box respectively.

[0016] Preferably, a blanking hopper is fixedly connected to the bottom of both ends of the processing box, and a plurality of curved plates are provided above the blanking hopper, and the curved plates are symmetrically arranged on both sides of the partition plate.

[0017] The beneficial effects of the present invention are as follows: 1. For a PCB hole metallization device of the present invention, through the cooperation of the electromagnetic block and the first spring; when the lifting frame moves to a set position above the first row of electromagnetic blocks, the first row of electromagnetic blocks is powered off, and under the action of the first spring, the two clamping plates are driven to move to both sides to release the fixation of the PCB board, and the brush is used for brushing; when the lifting block moves to a set position above the second row of electromagnetic blocks, the first row of electromagnetic blocks is powered on and the clamping plates are closed, and at the same time, the second row of electromagnetic blocks is powered off, and the brush brushes the PCB board here, and so on, to realize thorough brushing and degreasing of the PCB board, and also improve the efficiency of integrated circuit manufacturing.

[0018] 2. For a PCB hole metallization device of the present invention, through the cooperation of the gear and the rack, by opening the air cylinder, the air cylinder drives the convex block to move through the output end, the convex block drives the connecting plate to move, the connecting plate drives the rack to move, the rack drives the gear to rotate reciprocally, the gear drives the cross bar to rotate reciprocally, and the cross bar drives the mounting frame to swing reciprocally; during the swinging process, the electromagnetic block is intermittently powered off and on, which is convenient for cleaning the PCB board at the bottom of the clamping plate.

[0019] 3. The PCB via metallization device of the present invention, through the cooperation of the air jet box and the water absorption box, before spraying deionized water, it is necessary to move the receiving box directly below the water delivery pipe; at the same time, turn on the air jet fan to blow the foam and impurities to one side of the water absorption box, and absorb the foam and impurities through the water suction pump; then absorb them into the filter box, and filter through the filter box. The foam and impurities are filtered in the filter box, and the excess water is discharged into the treatment box through the drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 is a schematic structural view of the moving frame and the mounting frame of the present invention; Figure 4 is a schematic structural view of the connecting plate and the bottom plate of the present invention; Figure 5 is a schematic structural view of the second lead screw of the present invention; Figure 6 is a schematic structural view of the clamping plate of the present invention; Figure 7 is a cross-sectional view of the mounting box of the present invention; Figure 8 is a schematic structural view of the moving block of the present invention; Figure 9 is a schematic structural view of the receiving box of the present invention; Figure 10 is a cross-sectional view of the receiving box of the present invention; In the figure: 1, treatment box; 11, electric guide rail; 2, moving frame; 21, first motor; 22, first screw rod; 23, guide rod; 24, moving block; 25, water pipe; 26, water spray pipe; 3, receiving box; 31, jet box; 32, drainage pipe; 33, first guide plate; 34, second guide plate; 35, water suction box; 36, water outlet pipe; 37, water suction pipe; 38, filter box; 39, water suction pump; 310, filter plate; 4, electric push rod; 41, connecting frame; 42, vertical rod; 5, mounting frame; 51, cross bar; 511, gear; 512, rack ; 513, connecting plate; 514, cylinder; 52, mounting frame; 521, side plate; 522, second motor; 523, second screw rod; 524, lifting frame; 525, sliding rod; 526, bottom plate; 527, limiting groove; 528, rotating wheel; 529, belt; 53, clamping plate; 531, electromagnetic block; 532, sliding rod; 533, first spring; 534, rubber pad; 54, mounting box; 541, hollow tube; 542, second spring; 543, sliding plate; 544, brush; 6, partition; 61, arc plate; 7, curve plate; 71, lower hopper. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figures 1 to 6 As shown, a PCB hole metallization device according to an embodiment of the present invention comprises: a processing box 1; a partition plate 6, fixedly connected to the middle of the processing box 1; two mounting frames 5, symmetrically arranged inside the processing box 1; a mounting mechanism, arranged on the mounting frame 5; the mounting mechanism comprises six cross bars 51 rotatably connected to the mounting frame 5; both ends of the cross bars 51 are fixedly connected to mounting frames 52; the bottoms of the two mounting frames 52 are fixedly connected to bottom plates 526, and the bottom plates 526 are provided with through holes; the inner side walls of the mounting frames 52 are provided with limiting grooves 527; a plurality of sliding rods 532 are fixedly connected to the limiting grooves 527; the sliding rods 53 2 are sleeved with first springs 533 at both ends; two clamping plates 53 are symmetrically connected to the sliding rod 532, and the two ends of the first spring 533 are respectively fixed to the clamping plate 53 and the mounting frame 52; the inner wall of one end of the clamping plate 53 close to the sliding rod 532 is fixedly connected with an electromagnetic block 531; the inner wall of the other end of the clamping plate 53 is fixedly connected with a rubber pad 534; both sides of the mounting frame 52 are provided with lifting frames 524, and the mounting frame 52 is provided with a driving mechanism for driving the lifting frame 524 to move up and down, and the lifting frame 524 is provided with a distance sensor, and the distance sensor is electrically connected to multiple electromagnetic blocks 531.

[0024] Integrated circuit manufacturing requires the production of metallized holes on the PCB board. In the prior art, when fixing the PCB board, the fixing mechanism always clamps on the outside of the PCB board and covers the holes on the PCB board, resulting in the inability to degrease and clean the holes at this location. Moreover, due to the holes being covered, the debris inside the holes cannot be brushed off, causing incomplete cleaning of the PCB board; The installation mechanism provided by the present invention is used to clamp the PCB board during use. First, place the PCB board between two clamping plates 53. Under the action of the electromagnetic blocks 531, the two electromagnetic blocks 531 magnetically attract and fix the PCB board. Since there are multiple groups of clamping plates 53, multiple PCB boards can be clamped. It should be noted that there are no less than two groups of clamping plates 53 on each PCB board; then lower the PCB board into the processing tank 1. The processing tank 1 is separated by a partition 6. One side of the partition 6 is used for degreasing, and the other side of the partition 6 is used for micro-etching; during the degreasing process, it is necessary to brush the PCB board to clean burrs, impurities, or severe oil stains during the integrated circuit manufacturing process; during the brushing process, by turning on the driving mechanism, the lifting frame 524 is driven to move up and down, and the PCB board is brushed by the brush 544 on the lifting frame 524; among them, since the distance sensors on the lifting frame 524 are electrically connected to multiple electromagnetic blocks 531, when the lifting frame 524 moves to the set distance area, the electromagnetic blocks 531 intermittently disconnect and close. When the lifting frame 524 moves to the set position above the first row of electromagnetic blocks 531, the first row of electromagnetic blocks 531 is powered off. Under the action of the first spring 533, the two clamping plates 53 are driven to move to both sides, releasing the fixation of the PCB board. When the brush 544 is brushing, by the brush 544 squeezing the clamping plate 53, the clamping plate 53 rotates downward, facilitating the brushing of the PCB board below the clamping plate 53. When the brush 544 leaves the clamping plate 53, under the action of the first spring 533, the clamping plate 53 quickly resets, and the first row of electromagnetic blocks 531 is powered on and the clamping plate 53 closes; when the lifting frame 524 moves to the set position above the second row of electromagnetic blocks 531, brush as described above; and so on, to achieve thorough brushing and degreasing of the PCB board and improve the efficiency of integrated circuit manufacturing.

[0025] As Figure 5 and Figure 7 As shown, a plurality of mounting boxes 54 are fixedly connected to the inner side walls of the lifting frame 524. A plurality of hollow tubes 541 are fixedly connected to the inside of the mounting boxes 54. Second springs 542 are provided inside the hollow tubes 541. One end of each second spring 542 is fixedly connected to a sliding plate 543. The sliding plate 543 is slidably connected to the inside of the hollow tube 541. One end of the sliding plate 543 is fixedly connected to a brush 544 and extends to the outside of the mounting box 54.

[0026] The brush 544 provided by the present invention is used to brush the PCB board during use. During the brushing process, when encountering the holes of the PCB board, under the action of the second spring 542, the sliding plate 543 is pushed to slide in the hollow tube 541, and the brush 544 is driven by the sliding plate 543 to move into the holes, so as to brush the burrs and debris inside the holes, reduce the debris impurities in the integrated circuit manufacturing process, and improve the cleaning degree of the PCB board.

[0027] As Figure 5 shown, the driving mechanism includes side plates 521 fixedly connected to the two side walls of the two mounting frames 52; two second lead screws 523 are respectively rotatably connected between the side plates 521 on the same side; the lifting frames 524 are all threadedly connected to the second lead screws 523, and a second motor 522 is fixedly connected to one of the second lead screws 523; one end of each lifting frame 524 is slidably connected to a slide bar 525; both ends of the slide bar 525 are fixedly connected to the side plates 521 on the other side; the bottoms of the second lead screws 523 all extend below the side plates 521 and are all fixedly connected with runners 528; a belt 529 is sleeved between the two runners 528.

[0028] The runner 528 and the belt 529 provided by the present invention are used to promote the synchronous movement of the lifting frame 524 during use. When brushing is required, by turning on the second motor 522, the output shaft of the second motor 522 drives the connected second lead screw 523 to rotate, the second lead screw 523 drives the runner 528 at the bottom to rotate, this runner 528 drives another runner 528 to rotate through the belt 529, and another runner 528 drives the connected second lead screw 523 to rotate, so as to realize the synchronous rotation of the two second lead screws 523. The second lead screw 523 drives the connected lifting frame 524 to reciprocate up and down, the lifting frame 524 drives the brush 544 and the distance sensor to reciprocate up and down, and the PCB board is brushed by the brush 544; through the cooperation of the distance sensor and the electromagnet 531, it is convenient to brush the clamping part of the clamping plate 53.

[0029] As Figure 4 shown, one end of each cross bar 51 extends to the outside of the mounting frame 5 and is fixedly connected with a gear 511; a cylinder 514 is fixedly connected to the top of the mounting frame 5, the output end of the cylinder 514 is fixedly connected with a connecting plate 513 through a convex block, and a plurality of racks 512 are fixedly connected to the bottom of the connecting plate 513, and the racks 512 are respectively engaged with the gears 511 below.

[0030] When the PCB board is installed on the installation frame 52 and degreased in the processing box 1 during the processing, by reciprocating the PCB board, it is beneficial to evenly mix the cleaning liquid in the processing box 1 and at the same time reduce the attachment of debris to the PCB board; then it is lifted up for deionized water cleaning. By reciprocating the PCB board, it is convenient to clean the residual cleaning liquid on the PCB board. After the rinsing is completed, it is moved to one side for micro-etching; the gear 511 and the rack 512 provided by the present invention are used to drive the installation frame 52 to reciprocate when in use. By opening the cylinder 514, the cylinder 514 drives the convex block to move through the output end, drives the connecting plate 513 to move through the convex block, drives the rack 512 to move through the connecting plate 513, drives the gear 511 to rotate reciprocally through the rack 512, drives the cross bar 51 to rotate reciprocally through the gear 511, and drives the installation frame 52 to reciprocate through the cross bar 51.

[0031] As Figures 1 to 3 shown, two electric guide rails 11 are installed on the top of the processing box 1, and moving frames 2 are installed on the electric guide rails 11. Among them, an electric push rod 4 is fixedly connected to the top of the moving frame 2, and two vertical rods 42 are installed at the bottom of the other moving frame 2; connecting frames 41 are fixedly connected to the tops of the installation frames 5; the output end of the electric push rod 4 is fixedly connected to one of the connecting frames 41; the vertical rods 42 are all slidably connected to the other connecting frame 41.

[0032] The moving frame 2 provided by the present invention is convenient for moving the positions of the installation mechanism and the PCB board when in use. By matching the electric guide rail 11 with the rollers at the bottom of the moving frame 2, it is convenient to flexibly move the PCB board for degreasing and micro-etching treatments; by setting the electric push rod 4, the output end of the electric push rod 4 drives the connecting frame 41 to move up and down, which is convenient for deionized water rinsing after degreasing and micro-etching. During the movement of the connecting frame 41, the moving frame 2 slides on the vertical rods 42, improving the stability of the movement of the connecting frame 41.

[0033] As Figure 3 and Figure 8 shown, a first lead screw 22 is rotatably connected between the moving frames 2 through bearings, and a first motor 21 is provided at one end of the first lead screw 22; a moving block 24 is threadedly connected to the first lead screw 22, and two guide rods 23 are fixedly connected between the moving frames 2, and the moving block 24 is slidably connected to the two guide rods 23; a water delivery pipe 25 is fixedly connected to the bottom of the moving block 24, and a plurality of water spray pipes 26 are fixedly connected and communicated to the bottom of the water delivery pipe 25.

[0034] During the integrated circuit manufacturing process, after degreasing and micro-etching, it is necessary to clean the residual liquid on the PCB board with deionized water to prevent the influence on the next processing solution and also prevent over-treatment of the PCB board; the first lead screw 22 provided by the present invention is used to drive the water spray pipe 26 to reciprocate during use. By turning on the first motor 21, the output shaft of the first motor 21 drives the first lead screw 22 to rotate. The first lead screw 22 drives the moving block 24 to reciprocate. The moving block 24 drives the water delivery pipe 25 to reciprocate. The water delivery pipe 25 drives the water spray pipe 26 to reciprocate, so as to expand the spraying and rinsing range and improve the cleaning efficiency; during the movement of the moving block 24, the moving block 24 slides on the guide rod 23, and the guide rod 23 limits the moving block 24 to move in the horizontal direction.

[0035] As Figure 9 and Figure 10 As shown, one end of the electric guide rail 11 extends to one side of the processing tank 1 and is provided with a receiving tank 3. One end of the bottom of the receiving tank 3 close to the processing tank 1 is fixedly connected with an air jet tank 31; one end of the bottom of the receiving tank 3 far from the processing tank 1 is fixedly connected with a water absorption box 35. The air jet tank 31 is externally connected with a gas source through a trachea; a filter tank 38 is fixedly connected inside the receiving tank 3, and a filter plate 310 is fixedly connected inside the filter tank 38; the bottom of the filter tank 38 is connected and fixedly connected with a drain pipe 32; a water suction pipe 37 is connected and fixedly connected between the filter tank 38 and the water absorption box 35; a water suction pump 39 is installed on the water suction pipe 37; one end of the receiving tank 3 far from the drain pipe 32 is connected and fixedly connected with a water outlet pipe 36.

[0036] During the degreasing process, there will be foam and lighter impurities floating on the surface of the degreasing solution; during the micro-etching process, there are small impurities floating on the surface of the micro-etching solution; when the air jet tank 31 and the water absorption box 35 provided by the present invention are in use, before spraying deionized water, it is necessary to move the receiving tank 3 directly below the water delivery pipe 25 to receive deionized water; at the same time, turn on the air jet fan to blow the foam and impurities to one side of the water absorption box 35, and absorb the foam and impurities through the water suction pump 39; then absorb them into the filter tank 38, and filter them through the filter tank 38. The foam and impurities are filtered in the filter tank 38, and the excess water is discharged through the drain pipe 32 and blown into the processing tank 1 again through the air jet tank 31; the bottom of the receiving tank 3 is slightly higher than the solution surface.

[0037] As Figure 10 As shown, two first guide plates 33 are symmetrically and fixedly connected to one end of the air jet tank 31 close to the water absorption box 35; two second guide plates 34 are symmetrically and fixedly connected to one end of the water absorption box 35 close to the air jet tank 31.

[0038] When the first deflector plate 33 and the second deflector plate 34 provided by the present invention are in use, by providing the first deflector plate 33, it is convenient to guide the diffusion of the gas in the jet box 31, and blow the foam and impurities on the surface of the solution towards the water absorption box 35; by providing the second deflector plate 34, it is convenient to converge the foam and impurities on the surface of the solution and absorb them into the water absorption box 35, improving the cleaning effect.

[0039] As Figure 2 shown, two arc-shaped plates 61 are fixedly connected to the top of the partition plate 6, and the arc-shaped plates 61 are bent towards both ends of the processing box 1 respectively.

[0040] When the arc-shaped plate 61 provided by the present invention is in use, it prevents the solution from swinging to one side of the partition plate 6. During the swinging process of the installation mechanism and the PCB board, the solution is easily fluctuated. By providing the arc-shaped plate 61, the fluctuated solution falls back into the area where it is located according to the radian of the arc-shaped plate 61, and will not swing to the other side of the partition plate 6.

[0041] As Figure 2 shown, a blanking hopper 71 is fixedly connected to the bottom of both ends of the processing box 1, and a plurality of curved plates 7 are provided above the blanking hopper 71, and the curved plates 7 are symmetrically arranged on both sides of the partition plate 6.

[0042] The curved plate 7 provided by the present invention is used to collect the processed debris during use. The debris falls into the blanking hopper 71 through between the curved plates 7, preventing the debris from being lifted during the swinging process and affecting the subsequent processing of the PCB board.

[0043] Working principle: In integrated circuit manufacturing, it is necessary to fabricate metallized via holes on the PCB board. In the prior art, when fixing the PCB board, the fixing mechanism always clamps on the outside of the PCB board and will cover the holes on the PCB board, resulting in the inability to degrease and clean the holes at this location. Moreover, due to the holes being covered, the debris in the holes cannot be brushed off, causing incomplete cleaning of the PCB board; The mounting mechanism provided by the present invention is used to clamp the PCB board during use. First, the PCB board is placed between two clamping plates 53. Under the action of the electromagnetic blocks 531, the two electromagnetic blocks 531 are magnetically attracted to fix the PCB board. Since there are multiple groups of clamping plates 53, multiple PCB boards can be clamped. It should be noted that there are no less than two groups of clamping plates 53 on each PCB board. Then, the PCB board is lowered into the processing box 1. The processing box 1 is separated by a partition 6. One side of the partition 6 is used for degreasing, and the other side of the partition 6 is used for micro-etching. During the degreasing process, the PCB board needs to be brushed to clean burrs, impurities or severe oil stains during the integrated circuit manufacturing process. During the brushing process, the second motor 522 needs to be turned on. The second motor 522 drives the second lead screw 523 to rotate, and the second lead screw 523 drives the lifting frame 524 to move up and down. The lifting frame 524 drives the brush 544 to brush the PCB board up and down. During the brushing process, since the second motor 522 is electrically connected to the electromagnetic blocks 531, during the rotation of the second motor 522, the electromagnetic blocks 531 are intermittently disconnected and closed. When the lifting frame 524 moves to a set position above the first row of electromagnetic blocks 531, the first row of electromagnetic blocks 531 is powered off. Under the action of the first spring 533, the two clamping plates 53 are driven to move to both sides, releasing the fixation of the PCB board, and the brush 544 is used for brushing. When the lifting block moves to a set position above the second row of electromagnetic blocks 531, the first row of electromagnetic blocks 531 is powered on and the clamping plate 53 is closed. At the same time, the second row of electromagnetic blocks 531 is powered off, and the brush 544 brushes the PCB board at this position. This process is repeated to achieve thorough brushing and degreasing of the PCB board, and also improve the efficiency of integrated circuit manufacturing.

[0044] When brushing is required, the second motor 522 is turned on. The output shaft of the second motor 522 drives the connected second lead screw 523 to rotate. The second lead screw 523 drives the bottom runner 528 to rotate. The runner 528 drives another runner 528 to rotate through the belt 529. Another runner 528 drives the connected second lead screw 523 to rotate. The two lead screws rotate synchronously, driving the connected lifting frame 524 to move up and down reciprocally for brushing. During the brushing process, when encountering the holes of the PCB board, under the action of the second spring 542, the sliding plate 543 is pushed to slide in the hollow tube 541. The sliding plate 543 drives the brush 544 to move into the hole to brush the burrs and debris inside the hole, reducing the debris impurities during the integrated circuit manufacturing process and improving the cleaning degree of the PCB board.

[0045] When degreasing is carried out in the processing box 1, by reciprocally swinging the PCB board, it is beneficial to evenly mix the cleaning liquid in the processing box 1 and at the same time reduce the attachment of debris to the PCB board; then it is lifted up for deionized water cleaning. By reciprocally swinging the PCB board, it is convenient to clean the residual cleaning liquid on the PCB board. After the rinsing is completed, it is moved to one side for micro-etching; the gear 511 and the rack 512 provided by the present invention are used to drive the mounting frame 52 to reciprocally swing when in use. By turning on the air cylinder 514, the air cylinder 514 drives the convex block to move through the output end, drives the connecting plate 513 to move through the convex block, drives the rack 512 to move through the connecting plate 513, drives the gear 511 to rotate reciprocally through the rack 512, drives the cross bar 51 to rotate reciprocally through the gear 511, and drives the mounting frame 52 to reciprocally swing through the cross bar 51; during the swinging process, the electromagnetic block 531 is intermittently powered off and on, facilitating the cleaning of the PCB board at the bottom of the clamping plate 53.

[0046] Through the cooperation of the electric guide rail 11 and the rollers at the bottom of the moving frame 2, it is convenient to flexibly move the PCB board for degreasing and micro-etching treatment; by setting the electric push rod 4, the output end of the electric push rod 4 drives the connecting frame 41 to move up and down, facilitating deionized water rinsing after degreasing and micro-etching. During the movement of the connecting frame 41, the moving frame 2 slides on the vertical rod 42, improving the stability of the movement of the connecting frame 41; by turning on the first motor 21, the output shaft of the first motor 21 drives the first lead screw 22 to rotate, drives the moving block 24 to reciprocate through the first lead screw 22, drives the water delivery pipe 25 to reciprocate through the moving block 24, and drives the water spraying pipe 26 to reciprocally transport through the water delivery pipe 25, realizing the expansion of the spraying and rinsing range and improving the cleaning efficiency; during the movement of the moving block 24, the moving block 24 slides on the guide rod 23, and the guide rod 23 limits the movement of the moving block 24 in the horizontal direction.

[0047] Before spraying deionized water, the receiving box 3 needs to be moved directly below the water delivery pipe 25 to receive deionized water; at the same time, turn on the air jet fan to blow the foam and impurities to one side of the water absorption box 35, and absorb the foam and impurities through the water suction pump 39; then absorb them into the filter box 38, and through the filtration of the filter box 38, the foam and impurities are filtered in the filter box 38, and the excess water is discharged into the processing box 1 through the drain pipe 32; the bottom of the receiving box 3 is slightly higher than the solution surface.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB via metallization device, comprising: A processing box (1); A partition (6), fixedly connected to the middle of the processing box (1); Two mounting brackets (5), symmetrically arranged inside the processing box (1); A mounting mechanism, arranged on the mounting bracket (5); Characterized in that: the mounting mechanism includes six cross bars (51) rotatably connected to the mounting bracket (5); both ends of the cross bar (51) are fixedly connected with mounting frames (52); the bottom of the two mounting frames (52) is fixedly connected with a bottom plate (526), and through holes are provided on the bottom plate (526); limiting grooves (527) are provided on the inner side walls of the mounting frames (52); a plurality of sliding rods (532) are fixedly connected in the limiting grooves (527); both ends of the sliding rod (532) are sleeved with first springs (533); two clamping plates (53) are symmetrically rotatably connected to the sliding rod (532), and both ends of the first spring (533) are respectively fixedly connected to the clamping plate (53) and the mounting frame (52); electromagnetic blocks (531) are fixedly connected to the inner walls of the clamping plates (53) close to the sliding rod (532); rubber pads (534) are fixedly connected to the inner walls of the other ends of the clamping plates (53); Lifting frames (524) are arranged on both sides of the mounting frame (52), and a driving mechanism is arranged on the mounting frame (52) for driving the lifting frames (524) to move up and down. A distance sensor is arranged on the lifting frame (524), and the distance sensor is electrically connected to a plurality of electromagnetic blocks (531).

2. The PCB via hole metallization device according to claim 1, characterized in that: A plurality of mounting boxes (54) are fixedly connected to the inner side walls of the lifting frames (524), a plurality of hollow tubes (541) are fixedly connected inside the mounting boxes (54), second springs (542) are arranged inside the hollow tubes (541), one end of each second spring (542) is fixedly connected with a sliding plate (543), the sliding plate (543) is slidably connected inside the hollow tube (541), and one end of the sliding plate (543) is fixedly connected with a brush (544) and extends to the outside of the mounting box (54).

3. A PCB via metallization device according to claim 2, characterized in that: The driving mechanism includes side plates (521) fixedly connected to the two side walls of the two mounting frames (52); two second lead screws (523) are respectively rotatably connected between the side plates (521) on the same side; the lifting frames (524) are all threadedly connected to the second lead screws (523), and a second motor (522) is fixedly connected to one of the second lead screws (523); one end of each lifting frame (524) is slidably connected with a sliding rod (525); both ends of the sliding rod (525) are respectively fixedly connected to the side plates (521) on the other side; the bottoms of the second lead screws (523) all extend below the side plates (521) and are all fixedly connected with runners (528); a belt (529) is sleeved between the two runners (528).

4. A PCB via metallization device according to claim 3, characterized in that: One end of each of the cross bars (51) extends to the outside of the mounting frame (5) and is fixedly connected with a gear (511); a cylinder (514) is fixedly connected to the top of the mounting frame (5), the output end of the cylinder (514) is fixedly connected with a connecting plate (513) through a bump, and a plurality of racks (512) are fixedly connected to the bottom of the connecting plate (513), and the racks (512) are respectively engaged with the gears (511) below.

5. A PCB via metallization device according to claim 4, characterized in that: Two electric guide rails (11) are installed on the top of the processing box (1), and moving frames (2) are installed on the electric guide rails (11). Among them, an electric push rod (4) is fixedly connected to the top of the moving frame (2), and two vertical rods (42) are installed at the bottom of the other moving frame (2); connecting frames (41) are fixedly connected to the top of the mounting frame (5); the output end of the electric push rod (4) is fixedly connected to one of the connecting frames (41); the vertical rods (42) are all slidably connected to the other connecting frame (41).

6. The PCB via hole metallization device according to claim 5, characterized in that: A first lead screw (22) is rotatably connected between the moving frames (2) through bearings, and a first motor (21) is arranged at one end of the first lead screw (22); a moving block (24) is threadedly connected to the first lead screw (22), and two guide rods (23) are fixedly connected between the moving frames (2), and the moving block (24) is slidably connected to the two guide rods (23); a water delivery pipe (25) is fixedly connected to the bottom of the moving block (24), and a plurality of water spray pipes (26) are connected and fixed to the bottom of the water delivery pipe (25).

7. A PCB via metallization device according to claim 6, characterized in that: One end of the electric guide rail (11) extends to one side of the processing box (1) and is provided with a receiving box (3). One end of the bottom of the receiving box (3) close to the processing box (1) is fixedly connected with an air jet box (31); one end of the bottom of the receiving box (3) far from the processing box (1) is fixedly connected with a water absorption box (35), and the air jet box (31) is externally connected with a gas source through a trachea; a filter box (38) is fixedly connected inside the receiving box (3), and a filter plate (310) is fixedly connected inside the filter box (38); a drain pipe (32) is connected and fixed to the bottom of the filter box (38); a water suction pipe (37) is connected and fixed between the filter box (38) and the water absorption box (35); a water suction pump (39) is installed on the water suction pipe (37); a water outlet pipe (36) is connected and fixed to one end of the receiving box (3) far from the drain pipe (32).

8. A PCB hole metallization device according to claim 7, characterized in that: Two first flow guiding plates (33) are symmetrically fixedly connected to one end of the air jet box (31) close to the water absorption box (35); two second flow guiding plates (34) are symmetrically fixedly connected to one end of the water absorption box (35) close to the air jet box (31).

9. The PCB via hole metallization device according to claim 8, characterized in that: Two arc-shaped plates (61) are fixedly connected to the top of the partition plate (6), and the arc-shaped plates (61) are bent towards the two ends of the processing box (1) respectively.

10. A PCB via metallization device according to claim 9, characterized in that: Feeding hoppers (71) are fixedly connected to the bottoms of both ends of the processing box (1), and a plurality of curved plates (7) are arranged above the feeding hoppers (71), and the curved plates (7) are symmetrically arranged on both sides of the partition plate (6).

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