Copper-clad plate etching device and method

Abstract

The invention discloses a copper-clad plate etching device and method, and relates to the technical field of copper-clad plate production, the copper-clad plate etching device comprises a box body, two sets of conveying mechanisms, a feeding frame, a spraying mechanism and a controller, the feeding frame is arranged at one end of the box body, the two conveying mechanisms are connected to the side walls of the two sides of the box body respectively, and the spraying mechanism is arranged on the box body. A feeding groove is formed in the box body in the transverse direction in a penetrating mode, the box body is divided into an upper box body and a lower box body, the spraying mechanism comprises four sets of nozzles and four sets of moving assemblies, the two sets of nozzles are arranged at the two ends of the upper box body, and the other two sets of nozzles are arranged at the two ends of the lower box body; liquid outlet ports of the four sets of nozzles obliquely extend towards the center direction of the box bodies, the two sets of nozzles located on the upper box body are arranged in a staggered mode, the two sets of nozzles located on the lower box body are arranged in a staggered mode, and a distance measuring sensor is arranged on a conveying part of the conveying mechanism. The detection end of the distance measuring sensor faces the copper-clad plate of the feeding frame. According to the invention, the etching effect can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of copper clad laminate production, and particularly relates to an etching device and method for copper clad laminates. Background Art

[0002] During the etching process of copper clad laminates, the copper clad laminates are horizontally conveyed by a conveyor belt and sprayed with etching solution by spray heads distributed up and down.

[0003] In order to improve the etching effect of copper clad laminates, a large amount of etching solution is often sprayed, or etching solution with a higher purity is used. However, this method not only increases the etching cost, but also easily results in unqualified etching if the concentration and spraying amount of the etching solution are not properly controlled. Therefore, the present application proposes a new technical solution. Summary of the Invention

[0004] In order to improve the etching effect, the present application provides an etching device and method for copper clad laminates.

[0005] In a first aspect, the present application provides an etching device for copper clad laminates, adopting the following technical solution:

[0006] An etching device for copper clad laminates includes a box body, two sets of conveying mechanisms, a loading rack, a spraying mechanism, and a controller. The loading rack is arranged at one end of the box body, and copper clad laminates are placed on the surface of the loading rack. The two conveying mechanisms are respectively connected to the side walls on both sides of the box body and are used to transport the copper clad laminates above the loading rack into the box body for etching spraying. The box body is horizontally penetrated with a feeding slot for the copper clad laminates to slide through, and the box body is divided into an upper box body and a lower box body. The upper box body is located above the lower box body. Connecting frames are respectively fixedly connected to the outer walls on both sides of the upper box body, and the connecting frames are fixedly connected to the outer wall of the lower box body. The spraying mechanism includes four groups of nozzles and four groups of moving components for respectively moving each group of nozzles. Among them, two groups of nozzles are arranged at both ends of the upper box body, and the other two groups of nozzles are arranged at both ends of the lower box body. The liquid outlet ports of the four groups of nozzles extend obliquely towards the center of the box body. The positions between the two groups of nozzles located in the upper box body are staggered, and the positions between the two groups of nozzles located in the lower box body are staggered. A distance measuring sensor is arranged on the conveying part of the conveying mechanism, and the detection end of the distance measuring sensor faces the copper clad laminates on the loading rack. The conveying mechanism, the spraying mechanism, and the distance measuring sensor are respectively electrically connected to the controller;

[0007] Among them, the controller is configured to:

[0008] Obtain the detection data fed back by the distance measuring sensor;

[0009] Conduct position analysis based on the detection data. If the analysis result meets the preset copper clad laminate in-position condition, control the conveying mechanism to transfer the copper clad laminate;

[0010] Get the etching area required for the copper clad laminate;

[0011] Calculating movement parameters of the moving component according to the etching area and the preset number of nozzles;

[0012] Controlling the moving component based on the moving parameters;

[0013] Searching a preset database according to the etching area to determine the initial concentration of the etching solution sprayed by each nozzle in each matching group; wherein the database stores the data relationship between the etching area and the initial concentration of the etching solution sprayed by each nozzle in each group, and the initial concentration of the etching solution sprayed by each nozzle in each group is set from low to high according to a preset sequence rule;

[0014] Calculate the concentration parameter of the etching solution in each nozzle that needs to be increased according to the etching area, the initial concentration of the etching solution sprayed from each nozzle, and the movement parameter;

[0015] The spray mechanism is controlled based on the concentration parameter.

[0016] Optionally, the box body is provided with a plurality of guide rails along the longitudinal direction, the four groups of nozzles are all arranged in the plurality of guide rails, and the nozzles in different guide rails are arranged in parallel and spaced apart from each other, the liquid inlet port of the nozzle is fixedly connected with a connecting column, and the interior of the connecting column is hollow, a spiral rod is rotatably connected in the inner cavity of the connecting column, and the side wall of the connecting column is connected with an etching liquid hose and a water supply hose, the moving component includes a linkage component and a driving component, the linkage component is arranged on one side of the box body and connected to the connecting column, the driving component is arranged on the side wall of the box body, and the driving component is connected to the linkage component, and is used to drive the multiple nozzles to slide laterally in the guide rail.

[0017] Optionally, the linkage assembly includes a linkage rod and a plurality of fixed columns, an end of the connecting column facing away from the nozzle is fixedly connected to an extension block, the plurality of fixed columns are respectively fixed on the extension blocks that are inserted through a plurality of adjacent rows of nozzles, the linkage rod is fixedly connected to the ends of the plurality of fixed columns, the driving assembly is connected to the linkage rod, and is used to drive the linkage rod to move along the length direction of the guide rail in the box.

[0018] Optionally, the driving assembly includes a positioning plate, a threaded rod, a driving motor and a sliding block, the positioning plate being fixedly connected to the end of the side wall of the box body, the driving motor being fixedly connected to the side wall of the box body and located at an end away from the positioning plate, and the output shaft of the driving motor is extended toward the positioning plate, one end of the threaded rod is fixedly connected to the output shaft of the driving motor, and the other end of the threaded rod is rotatably connected to the side wall of the positioning plate, the sliding block is threadedly connected to the threaded rod, and the side wall of the sliding block abuts against the side wall of the box body, and the end of the sliding block is fixedly connected to the linkage rod.

[0019] Optionally, the conveying mechanism includes a second threaded rod, a conveying arm, a conveying block, a lifting unit, a second driving motor, and a clamping assembly. The conveying arm is fixedly connected to the side wall of the upper box body. A second positioning plate is fixedly connected to the end of the conveying arm away from the loading rack. The second driving motor is fixedly connected to the upper surface of the conveying arm away from the second positioning plate, and the output shaft of the second driving motor extends towards the second positioning plate. One end of the second threaded rod is fixedly connected to the output shaft of the second driving motor, and the other end of the second threaded rod is rotatably connected to the side wall of the second positioning plate. The conveying block is threadedly connected to the second threaded rod. An extension rod is fixedly connected to the lower surface of the conveying block. A sliding groove for the extension rod to slide is formed through the conveying arm. The lower end of the extension rod is fixedly connected to a support seat, and the upper surface of the support seat fits with the lower surface of the conveying arm. The lifting unit is fixedly connected to the end of the support seat. The lifting end of the lifting unit extends vertically downward and passes through the support seat. The clamping assembly is connected to the lifting end of the lifting unit and is used to clamp the copper clad laminate from the surface of the loading rack.

[0020] Optionally, the clamping assembly includes a support box, clamping blocks, a supporting plate, a third threaded rod, and a third driving motor. The support box is fixedly connected to the lifting end of the lifting unit and extends along the width direction of the box body. The interior of the support box is hollow and both ends are open. The third driving motor is fixedly connected to the end of the support box away from the loading rack, and the output shaft of the third driving motor extends towards the loading rack. The supporting plate is fixedly connected to the inner wall of the support box. One end of the third threaded rod is fixedly connected to the output shaft of the third driving motor, and the other end of the third threaded rod is rotatably connected to the side wall of the supporting plate. A push plate is threadedly connected to the third threaded rod, and the side wall of the push plate abuts against the inner wall of the support box. A pushing rod is fixedly connected to the side wall of the push plate on the side away from the third driving motor. The pushing rod slidably passes through the supporting plate and is fixedly connected to the clamping block.

[0021] Optionally, a groove is formed in the side wall of the clamping block on the side away from the supporting plate, and a telescopic spring is fixedly connected to the inner wall of the groove. An arc-shaped abutting block is arranged at the opening of the groove, and one end of the arc-shaped abutting block extends into the groove and is fixedly connected to the telescopic spring. The side of the arc-shaped abutting block facing the loading rack is arc-shaped and wavy. An embedding groove for filling the copper clad laminate is formed on the upper surface of the loading rack, and the depth of the embedding groove is less than the thickness of the copper clad laminate. The distance measuring sensor is fixedly connected to the side wall of the support box.

[0022] Optionally, both ends of the connecting frame are fixedly connected to the side walls of the upper box body and the lower box body respectively, and the connecting frame covers the conveying mechanism. Limited current blocks are fixedly connected to the inner walls on both sides of the upper box body and the lower box body respectively. The cross-section of the limited current block is wedge-shaped, and the inclined surfaces of the limited current block face the inner cavities of the box bodies where they are located. A waste liquid tank for discharging the etching solution is provided at the end of the lower box body, and a protective cover is provided outside the box body and the loading rack.

[0023] In a second aspect, the present application provides a method for etching a copper clad laminate, adopting the following technical solutions:

[0024] A method for etching a copper clad laminate, which is applicable to any one of the above-mentioned copper clad laminate etching devices, and the specific steps include:

[0025] S1. Store the copper clad laminate on the loading rack and extract it through the conveying mechanism;

[0026] S2. Use the conveying mechanism to move the copper clad laminate to the spraying point in the box body;

[0027] S3. Fill different concentrations of etching solution into each nozzle and spray the copper clad laminate;

[0028] S4. When spraying, move the nozzle, and at the same time, adjust the concentration of the etching solution sprayed by each nozzle in real time;

[0029] S5. Move the etched copper clad laminate out of the box body.

[0030] In summary, the present application includes the following beneficial technical effects: The copper clad laminate placed on the loading rack is moved into the box body through the conveying mechanism for spraying the etching solution. Since the nozzles at both ends of the box body are inclined relative to each other and are arranged staggeredly, the etching solution impacts the panel obliquely. At the same time, during the spraying process of the nozzles, the moving component drives the nozzles to move towards the center of the box body, and the concentration of the etching solution sprayed by the nozzles is adjusted during the movement of the nozzles, so as to improve the etching uniformity of the entire panel of the copper clad laminate and improve the etching effect. Description of the Drawings

[0031] Figure 1 is the overall structural schematic diagram of an embodiment of the present application;

[0032] Figure 2 is the structural schematic diagram of the box body of an embodiment of the present application;

[0033] Figure 3 is the partial cross-sectional view of the box body of an embodiment of the present application;

[0034] Figure 4 is the schematic diagram of the spraying of the nozzle of an embodiment of the present application;

[0035] Figure 5It is a partial cross-sectional view of the connecting column in the embodiment of the present application;

[0036] Figure 6 It is a schematic structural diagram of the driving component in the embodiment of the present application;

[0037] Figure 7 It is a schematic structure of the conveying mechanism in the embodiment of the present application;

[0038] Figure 8 It is a schematic structural diagram of the clamping component in the embodiment of the present application;

[0039] Figure 9 It is Figure 8 a partial enlarged view of part A in;

[0040] Figure 10 It is a schematic structural diagram of the current-limiting block in the embodiment of the present application.

[0041] Explanation of reference numerals: 1, box body; 11, feeding groove; 12, guide rail; 13, current-limiting block; 14, protective cover; 2, conveying mechanism; 21, second threaded rod; 22, conveying arm; 23, conveying block; 24, lifting unit; 25, clamping component; 251, support box; 252, clamping block; 2521, groove; 2522, telescopic spring; 2523, arc-shaped abutting block; 253, supporting plate; 254, third threaded rod; 255, driving motor three; 256, push plate; 257, push rod; 26, second positioning plate; 27, support seat; 28, driving motor two; 3, loading rack; 4, connecting frame; 5, spraying mechanism; 51, nozzle; 52, connecting column; 53, moving component; 54, linkage component; 541, linkage rod; 542, fixed column; 543, extension block; 55, driving component; 551, first positioning plate; 552, first threaded rod; 553, driving motor one; 554, sliding block; 6, ranging sensor. Detailed implementation manners

[0042] The following will Figures 1 - 10 further describe the present application in detail with reference to the attached

[0043] The embodiment of the present application discloses a copper clad laminate etching device.

[0044] Referring to Figure 1 and Figure 2 , the copper clad laminate etching device includes a box body 1, two groups of conveying mechanisms 2, a loading rack 3, a spraying mechanism 5 and a controller. The loading rack 3 is fixedly connected to one end of the box body 1 by bolts, and the surface of the loading rack 3 is placed with the copper clad laminate to be etched. The two groups of conveying mechanisms 2 are respectively arranged on both sides of the box body 1 and are used to move the copper clad laminate on the surface of the loading rack 3 into the box body 1 for etching spraying. The controller in this embodiment can be a PLC controller.

[0045] The box body 1 is provided with a feeding groove 11 penetrating transversely for the sliding penetration of the copper clad laminate, and the box body 1 is divided into an upper box body and a lower box body. Among them, the upper box body is located above the lower box body, and connecting frames 4 are respectively fixedly connected to the outer walls on both sides of the upper box body by bolts. The other ends of the connecting frames 4 are fixedly connected to the outer wall of the lower box body by bolts to realize the fixation between the upper box body and the lower box body.

[0046] Referring to Figure 3 , the spraying mechanism 5 includes four groups of nozzles 51 and four groups of moving components 53 for respectively moving each group of nozzles 51. Among them, two groups of nozzles 51 are arranged at both ends of the upper box body, and the other two groups of nozzles 51 are arranged at both ends of the lower box body. And the liquid spraying ends of the four groups of nozzles 51 are inclined and extended towards the center direction of the box body 1. The positions between the two groups of nozzles 51 located in the upper box body are staggered, and the positions between the two groups of nozzles 51 located in the lower box body are also staggered to prevent the mutual contact between the relatively sprayed etching liquid from affecting the spraying direction of the etching liquid during the spraying of the etching liquid, thereby affecting the etching effect of the copper clad laminate.

[0047] A ranging sensor 6 is arranged on the conveying part of the conveying mechanism 2, and the detection end of the ranging sensor 6 faces the copper clad laminate on the loading rack 3. The ranging sensor 6 is used to detect whether the conveying part of the conveying mechanism 2 can extract the copper clad laminate from the surface of the loading rack 3 and convey it. The conveying mechanism 2, the spraying mechanism 5 and the ranging sensor 6 are respectively electrically connected to the controller;

[0048] Among them, the controller is configured as:

[0049] 1), Obtain the detection data fed back by the ranging sensor 6;

[0050] 2), Perform position analysis based on the detection data. If the analysis result meets the preset copper clad laminate in-place condition, control the conveying mechanism 2 to transfer the copper clad laminate;

[0051] It can be understood that the preset copper clad laminate in-place condition means that the copper clad laminate is located on the conveying part of the conveying mechanism 2 (since the ranging sensor 6 is preset on the conveying part of the conveying mechanism 2, the distance between it and the copper clad laminate detected by the ranging sensor 6 when the copper clad laminate is located on the conveying part of the conveying mechanism 2 can be recorded as a reference value for whether the copper clad laminate is in place).

[0052] 3), Obtain the area of the copper clad laminate to be etched;

[0053] It can be understood that a camera can be arranged above the loading rack 3, and the monitoring end of the camera faces the copper clad laminate on the surface of the loading rack. By performing image processing and recognition on the data collected by the camera, the area of the copper clad laminate to be etched can be obtained.

[0054] 4) Calculate the movement parameters of the moving component 53 according to the etching area and the preset number of nozzles 51;

[0055] It can be understood that since the nozzle 51 will move towards the copper clad laminate under the drive of the moving component 53 during the process of spraying the etching solution, it is necessary to adjust the movement parameters of the moving component 53 through the obtained etching area of the copper clad laminate, so that the etching solution sprayed by the nozzle 51 meets the etching requirements of the copper clad laminate; the movement parameters refer to the movement speed, the movement amount, etc. (it should be noted that to reduce the waste of the etching solution, each nozzle 51 in each group of nozzles 51 gradually starts spraying during the process of moving towards the copper clad laminate. Since the distance between each nozzle 51 can be set by itself, the moving component 53 is controlled through the obtained etching area of the copper clad laminate, so that the nozzles 51 gradually start when moving towards the copper clad laminate).

[0056] 5) Control the moving component 53 based on the movement parameters;

[0057] 6) Search the preset database according to the etching area to determine the initial concentration of the etching solution sprayed by each nozzle 51 in each matched group; among them, the database stores the data relationship between the etching area and the initial concentration of the etching solution sprayed by each nozzle 51 in each group, and the initial concentration of the etching solution sprayed by each nozzle 51 in each group is set from low to high according to the preset sequence rule;

[0058] The example of the data relationship between the above etching area and the initial concentration of the etching solution of the nozzle 51:

[0059] Refer to Figure 4 , for example, the surface of the copper clad laminate needs to etch four graphic circuits, and the four graphic circuits are evenly arranged along the length direction of the copper clad laminate, and are respectively defined as X1, X2, X3, X4 along the feeding direction of the copper clad laminate; group A nozzles 51 and group B nozzles 51 are respectively arranged at both ends of the upper box body, and the liquid spraying ends of the two groups of nozzles 51 at both ends of the upper box body are arranged obliquely downward and extend towards the center of the box body 1. Each group of nozzles 51 is divided into four columns, and the four columns of nozzles 51 are arranged at equal distances along the length direction of the box body 1; the number and arrangement method of the nozzles 51 of the lower box body are the same as those of the upper box body. The difference is that the liquid spraying ends of the nozzles 51 of the lower box body are arranged obliquely upward and extend towards the center of the box body 1. In this example, only the spraying situation of the nozzles 51 of the upper box body is taken as an example for illustration:

[0060] The nozzles 51 in the upper box body A group are respectively defined as A1, A2, A3, and A4 along the feeding direction of the copper clad laminate; the nozzles 51 in the upper box body B group are respectively defined as B4, B3, B2, and B1 along the feeding direction of the copper clad laminate. It should be noted that when spraying the etching solution on the copper clad laminate, the nozzles 51 in the A group and the nozzles 51 in the B group move and spray in the direction of approaching each other, and the copper clad laminate is located in the middle position of the box body 1. At the same time, the nozzles 51 in the A group and the nozzles 51 in the B group are inclined and extend towards each other. Therefore, when the nozzles 51 in the A group and the nozzles 51 in the B group move synchronously, the spraying situation between the nozzles 51 in the A group and the copper clad laminate is as follows: the graphic circuits located at X1 will be sprayed by A4, A3, A2, and A1 in sequence. Since the nozzles 51 in the A group stop moving when approaching the center position of the copper clad laminate, that is, when the liquid outlet port of A4 faces X4, the graphic circuits located at X2 will be sprayed by A4, A3, and A2 in sequence, the graphic circuits located at X3 will be sprayed by A4 and A3 in sequence, and the graphic circuits located at X4 will only be sprayed by A4. Therefore, to prevent the graphic circuits located at X1 from being over-etched, the initial concentration of the etching solution between A1, A2, A3, and A4 needs to be gradually increased.

[0061] 7), Calculate the concentration parameter that the etching solution in each nozzle 51 needs to increase according to the etching area, the initial concentration of the etching solution sprayed by each nozzle 51, and the movement parameters;

[0062] Exemplary: The initial concentrations of the etching solution corresponding to the nozzles A1, A2, A3, and A4 are 2%, 4%, 7%, and 10% respectively. At the same time, to make the etching effect of each graphic circuit on the copper clad laminate uniform, the concentration of the etching solution in each nozzle 51 is gradually increased during the movement of the nozzle 51, and the increased concentration of the etching solution in each nozzle 51 is different. When A4 moves from X1 to X2, from X2 to X3, and from X3 to X4, the concentration of the etching solution is increased by 2%, 3%, and 5% in sequence. When A3 moves from X1 to X2 and from X2 to X3, the concentration of the etching solution is increased by 2% and 3% in sequence. When A2 moves from X1 to X2, the concentration is increased by 1%, so that the etching solution spraying of A4 on X4 meets the etching effect of the copper clad laminate, and at the same time, the situation of over-etching of the graphic circuit at X1 is avoided.

[0063] 8), Control the spraying mechanism 5 based on the concentration parameter.

[0064] With the above settings, the copper clad laminate placed on the surface of the loading rack 3 is moved into the box body 1 by the conveying mechanism 2 for spraying the etching solution. Since the nozzles 51 at both ends of the box body 1 are inclined relatively towards each other and are arranged staggeredly, the etching solution impacts the panel of the copper clad laminate obliquely, avoiding the accumulation of the old etching solution locally, enabling the new etching solution to contact the surface of the copper clad laminate more timely and fully. Meanwhile, during the spraying process of the nozzles 51, the moving assembly 53 drives the nozzles 51 to move towards the center of the box body 1, and adjusts the concentration of the etching solution sprayed by the nozzles 51 during the movement of the nozzles 51, so as to improve the etching uniformity of the entire panel of the copper clad laminate and improve the etching effect.

[0065] Refer to Figure 3 And Figure 5 , a plurality of guide rails 12 are longitudinally formed through the box body 1. All four groups of nozzles 51 are inserted into the guide rails 12, and intervals are provided between the nozzles 51 in each group located in different guide rails 12, so that the two groups of nozzles 51 at both ends of the box body 1 are staggered with each other, and the nozzles 51 at the left and right ends spray the etching solution onto the copper clad laminate simultaneously, making the distribution of the etching solution on the surface of the copper clad laminate more uniform (it should be noted that in this embodiment, the etching solution sprays from the nozzles 51 in a direct current shape to avoid mutual influence between the nozzles 51 facing each other at both ends of the box body 1 during spraying, and the nozzles 51 in this embodiment can be direct current nozzles).

[0066] The liquid inlet port of the nozzle 51 is fixedly connected with a connecting column 52, and the inside of the connecting column 52 is hollow and communicated with the nozzle 51. A screw rod is rotatably connected in the inner cavity of the connecting column 52, and an etching solution hose and a water supply hose are communicated with the side wall of the connecting column 52. Water and etching solution are filled into the connecting column 52 through the water supply hose and the etching solution hose. The spiral blades of the screw rod generate a force to rotate circumferentially around the screw rod under the scouring of water and etching solution, driving the spiral blades to rotate accordingly, so as to achieve the effect of mixing water and etching solution, ensuring the stability of the concentration of the etching solution sprayed from the liquid outlet port of the nozzle 51 and improving the etching effect.

[0067] Refer to Figure 2 , Figure 3 And Figure 6 , the moving assembly 53 includes a linkage assembly 54 and a driving assembly 55. The linkage assembly 54 is arranged on one side of the box body 1 and is connected to a plurality of connecting columns 52. The nozzle 51 is controlled in a linkage manner through the linkage assembly 54. The driving assembly 55 is arranged on the side wall of the box body 1, and the driving assembly 55 is connected to the linkage assembly 54. The nozzle 51 after being linked by the linkage assembly 54 is controlled through the driving assembly 55, so that the nozzle 51 can slide along the extending direction of the guide rail 12 (i.e., the length direction of the box body 1) under the drive of the driving assembly 55, so as to avoid the accumulation of the etching solution at a certain point.

[0068] Refer toFigure 3 , in an embodiment of the present application, the linkage assembly 54 includes a linkage rod 541 and a plurality of fixing columns 542. An extension block 543 is welded to one end of the connecting column 52 away from the nozzle 51. The plurality of fixing columns 542 are respectively fixedly inserted through the extension blocks 543 in multiple columns. The linkage rod 541 is fixedly sleeved on the ends of the plurality of fixing columns 542, so that the plurality of nozzles 51 achieve a linkage effect through the linkage rod 541. The driving assembly 55 is connected to the linkage rod 541, and the movement of the linkage rod 541 is driven by the driving assembly 55.

[0069] Refer to Figure 6 , the driving assembly 55 includes a first positioning plate 551, a first threaded rod 552, a first driving motor 553 and a sliding block 554. The first positioning plate 551 is fixedly connected to the end of the side wall of the box body 1 by bolts. A support frame is fixedly connected to the side wall of the box body 1 at the end away from the first positioning plate 551 by bolts. The first driving motor 553 is mounted on the support frame and fixed by bolts, and the output shaft of the first driving motor 553 extends towards the first positioning plate 551. One end of the first threaded rod 552 is coaxially and fixedly connected to the output shaft of the first driving motor 553 through a coupling. A bearing seat is fixedly installed on the side wall of the first positioning plate 551. The other end of the first threaded rod 552 is rotatably connected to the first positioning plate 551 through the bearing seat. The sliding block 554 is threadedly connected to the first threaded rod 552, and the side wall of the first threaded rod 552 abuts against the side wall of the box body 1. The end of the sliding block 554 is fixedly connected to the linkage rod 541 by bolts.

[0070] When the output shaft of the first driving motor 553 rotates, the sliding block 554 is threadedly connected to the first threaded rod 552 and the side wall of the sliding block 554 abuts against the side wall of the box body 1. The sliding block 554 is limited, so that the sliding block 554 drives the linkage rod 541 to slide along the axial direction of the first threaded rod 552, realizing the moving spraying of the nozzle 51, enabling the etching solution to contact the surface of the copper clad laminate more fully, and improving the etching effect.

[0071] Refer to Figure 7, in another embodiment of the present application, the conveying mechanism 2 includes a second threaded rod 21, a conveying arm 22, a conveying block 23, a lifting unit 24, and a clamping assembly 25. The conveying arm 22 is fixedly connected to the side wall of the upper box body by bolts. One end of the conveying arm 22 facing away from the loading rack 3 is fixedly connected with a second positioning plate 26 by bolts. The second driving motor 28 is fixedly installed on the upper surface of one end of the conveying arm 22 facing away from the second positioning plate 26, and the output shaft of the second driving motor 28 extends towards the second positioning plate 26. One end of the second threaded rod 21 is coaxially and fixedly connected to the output shaft of the second driving motor 28 through a coupling, and the other end of the second threaded rod 21 is rotatably connected to the side wall of the second positioning plate 26 through a bearing seat. The conveying block 23 is threadedly connected to the second threaded rod 21. An extension rod is welded to the lower surface of the conveying block 23. The conveying arm 22 is longitudinally provided with a sliding groove for the extension rod to slide. The lower end of the extension rod is fixedly connected with a support seat 27 by bolts, and the upper surface of the support seat 27 is attached to the lower surface of the conveying arm 22. The lifting unit 24 is fixedly embedded in one end of the support seat 27 facing away from the box body 1, and the clamping assembly 25 for clamping the copper clad laminate from the loading rack 3 is connected to the lifting end of the lifting unit 24 (wherein, the lifting unit 24 in the embodiment of the present application can be a cylinder).

[0072] Through the above settings, when it is necessary to etch the copper clad laminate placed on the surface of the loading rack 3, the clamping assembly 25 is lowered to the upper surface of the loading rack 3 through the lifting unit 24, and the copper clad laminate is extracted under the action of the clamping assembly 25. The output shaft of the second driving motor 28 drives the extension rod to rotate. Since the upper surface of the support seat 27 is attached to the lower surface of the conveying arm 22, the extension rod is limited, and the extension rod slides along the axial direction of the second threaded rod 21, driving the copper clad laminate to move into the inner cavity of the box body 1 through the feed slot 11 to complete the spraying operation of the etching solution.

[0073] Refer to Figure 7 And Figure 8The clamping assembly 25 includes a support box 251, a clamping block 252, a support plate 253, a threaded rod 254 and a drive motor 255. The support box 251 is fixedly connected to the lifting end of the lifting unit 24 by bolts, and the support box 251 is extended along the width direction of the box body 1. The interior of the support box 251 is hollow and the two ends are open. The end of the support box 251 away from the box body 1 is fixedly connected to a fixing frame by bolts. The drive motor 255 is mounted on the fixing frame and fixed by bolts, and the output shaft of the drive motor 255 is extended toward the direction of the loading frame 3. The support plate 25 The threaded rod 254 is fixedly connected to the inner wall of the support box 251 by bolts, one end of the threaded rod 254 is coaxially fixedly connected to the output shaft of the driving motor 255 by a coupling, and the other end of the threaded rod 254 is rotatably connected to the support plate 253 by a bearing seat, the threaded rod 254 is threadedly connected with a push plate 256, and the side wall of the push plate 256 abuts against the inner wall of the support box 251, and a push rod 257 is fixedly connected to the side wall of the push plate 256 away from the driving motor 255 by bolts, and the push rod 257 is slidably arranged in the support plate 253 and fixedly connected to the clamping block 252 by bolts.

[0074] Through the above arrangement, after the support box 251 is lowered to the surface of the loading rack 3 through the lifting unit 24, the output shaft of the driving motor three 255 is rotated. Since the side wall of the push plate 256 abuts against the inner wall of the support box 251, the push plate 256 moves axially along the threaded rod three 254 in the support box 251, and drives the clamping block 252 through the push rod 257 to realize the operation of clamping and releasing the copper clad laminate.

[0075] Reference Figure 8 and Figure 9 In another embodiment of the present application, in order to clamp the copper clad laminate to prevent the copper clad laminate from being loosened and offset during etching in the box body 1, thereby affecting the etching effect of the copper clad laminate, a groove 2521 is provided on the side wall of the clamping block 252 away from the supporting plate 253, and a telescopic spring 2522 and an arc-shaped stop block 2523 are arranged in the groove 2521, one end of the telescopic spring 2522 is fixed to the bottom of the groove 2521, and the other end is fixed to the arc-shaped stop block 2523, the side wall of the arc-shaped stop block 2523 facing the loading rack 3 is arc-shaped and extends out of the groove 2521, and abuts against the copper clad laminate, and the arc-shaped stop block 2523 has an arc-shaped wave-shaped arc surface facing the loading rack 3, so that the arc-shaped stop block 2523 can clamp the copper clad laminate.

[0076] The upper surface of the loading rack 3 is provided with a groove for positioning the placement position of the copper clad laminate. By filling the lower surface of the copper clad laminate into the groove, it is convenient to clamp the copper clad laminate through the clamping assembly 25 (it should be noted that the depth of the groove opened is less than the thickness of the copper clad laminate). The distance measuring sensor 6 is fixedly installed on the side wall of the support box 251 through bolts, and the detection end of the distance measuring sensor 6 extends towards the copper clad laminate on the surface of the loading rack 3.

[0077] Through the above settings, when the output shaft of the third driving motor 255 rotates and pushes the clamping block 252 to move towards the copper clad laminate on the surface of the loading rack 3, the arc surface of the arc-shaped abutting block 2523 abuts against the side wall of the copper clad laminate. As the output shaft of the third driving motor 255 continues to rotate, the telescopic spring 2522 gradually contracts. Under the elastic force of the telescopic spring 2522, the arc-shaped abutting block 2523 abuts tightly against the copper clad laminate to ensure that the copper clad laminate is not prone to deviation and other situations that affect the etching effect when it is moved into the box body 1 for etching.

[0078] Refer to Figure 1 、 Figure 2 and Figure 10 In an embodiment of the present application, the upper box body and the lower box body are fixed through two connecting frames 4, and the connecting frames 4 cover the conveying mechanism 2 to facilitate the conveying mechanism 2 to convey the copper clad laminate in the feeding groove 11. The upper box body and the lower box body are respectively fixedly connected with current limiting blocks 13 on the inner walls on both sides through bolts. The current limiting blocks 13 extend along the length direction of the box body 1, and the current limiting blocks 13 are arranged close to the opening of the feeding groove 11. The cross-section of the current limiting blocks 13 is wedge-shaped and its inclined surface faces the inner cavity of the box body 1 to prevent the etching solution from splashing out from the opening of the feeding groove 11 when the nozzle 51 sprays. To prevent the etching solution from accumulating in the inner cavity of the lower box body, a waste liquid groove for discharging the etching solution is opened at the end of the lower box body. The loading rack 3 and the box body 1 are covered with a protective cover 14 to prevent the etching solution from splashing out of the box body 1 (wherein, feeding ports and discharging ports for feeding and discharging the copper clad laminate are respectively opened at both ends of the protective cover 14).

[0079] The embodiment of the present application also discloses a method for etching a copper clad laminate, which specifically includes the following steps:

[0080] S1. Store the copper clad laminate on the loading rack 3 and extract it through the conveying mechanism 2;

[0081] S2. Use the conveying mechanism 2 to move the copper clad laminate to the spraying point in the box body 1;

[0082] S3. Fill different concentrations of etching solution into each nozzle 51 and spray the copper clad laminate;

[0083] S4. Move the nozzle 51 while the nozzle 51 sprays, and simultaneously adjust the concentration of the etching solution sprayed by each nozzle 51 in real time;

[0084] S5. Remove the etched copper clad laminate from the box body 1.

[0085] It can be understood that in the above steps, by adjusting the lifting end of the lifting unit 24, the clamping block 252 is located on the upper surface of the loading rack 3. Under the rotation of the output shaft of the third driving motor 255, the clamping block 252 is driven to move towards the copper clad laminate to realize the extraction of the copper clad laminate (it should be noted that after the extraction of the copper clad laminate is completed, the lifting end of the lifting unit 24 needs to be adjusted to ensure that the copper clad laminate is located at the opening of the feeding groove 11); the spraying points in the box body 1 are the preset spraying positions when the copper clad laminate is etched; the selection of the initial concentration of the etching solution in the nozzle 51 and the real-time adjusted etching solution concentration are described in the first embodiment.

[0086] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A copper clad laminate etching device, characterized in that: The invention comprises a box body (1), two groups of conveying mechanisms (2), a loading rack (3), a spraying mechanism (5) and a controller. The loading rack (3) is arranged at one end of the box body (1), and a copper-clad plate is placed on the surface of the loading rack (3). The two conveying mechanisms (2) are respectively connected to the side walls on both sides of the box body (1) and are used to transport the copper-clad plate above the loading rack (3) to the box body (1) for etching and spraying. The box body (1) is provided with a feed trough (11) for the copper-clad plate to slide through in the transverse direction, and the box body (1) is divided into an upper box body and a lower box body. The upper box body is located above the lower box body. The outer walls on both sides of the upper box body are respectively fixedly connected to connecting racks (4), and the connecting racks (4) are fixedly connected to the outer wall of the lower box body. The spraying mechanism (5) ) comprises four groups of nozzles (51) and four groups of moving components (53) for moving each group of nozzles respectively, wherein two groups of the nozzles (51) are arranged at two ends of the upper box body, and the other two groups of nozzles (51) are arranged at two ends of the lower box body, and the liquid outlet ports of the four groups of nozzles (51) are all arranged to extend obliquely toward the center direction of the box body (1), the positions between the two groups of nozzles (51) located in the upper box body are staggered, and the positions between the two groups of nozzles (51) located in the lower box body are staggered, the conveying part of the conveying mechanism (2) is provided with a distance sensor (6), and the detection end of the distance sensor (6) is arranged toward the copper clad plate of the loading rack (3), and the conveying mechanism (2), the spraying mechanism (5) and the distance sensor (6) are respectively electrically connected to the controller; Among them, the controller configuration is: Acquiring detection data fed back by a distance measuring sensor (6); Performing position analysis based on the detection data, and if the analysis result meets the preset copper clad laminate in place condition, controlling the conveying mechanism (2) to move the copper clad laminate; Get the etching area required for the copper clad laminate; Calculating movement parameters of the moving component (53) according to the etching area and the preset number of nozzles (51); controlling a moving component (53) based on the moving parameters; Searching a preset database according to the etching area, determining the initial concentration of the etching liquid sprayed by each nozzle (51) in each matching group; wherein the database stores the data relationship between the etching area and the initial concentration of the etching liquid sprayed by each nozzle (51) in each group, and the initial concentration of the etching liquid sprayed by each nozzle (51) in each group is set from low to high according to a preset sequence rule; Calculating the concentration parameter required to increase the etching solution in each nozzle (51) according to the etching area, the initial concentration of the etching solution sprayed from each nozzle (51), and the movement parameter; The spraying mechanism (5) is controlled based on the concentration parameter.

2. The copper clad laminate etching device according to claim 1, wherein: The box body (1) is provided with a plurality of guide rails (12) running through it in the longitudinal direction. The four groups of nozzles (51) are all arranged in the plurality of guide rails (12), and the nozzles (51) located in different guide rails (12) are arranged in parallel and spaced from each other. The liquid inlet port of the nozzle (51) is fixedly connected to a connecting column (52), and the interior of the connecting column (52) is hollow. A spiral rod is rotatably connected in the inner cavity of the connecting column (52), and the side wall of the connecting column (52) is connected to an etching liquid hose and a water supply hose. The moving component (53) comprises a linkage component (54) and a driving component (55). The linkage component (54) is arranged on one side of the box body (1) and is connected to the connecting column (52). The driving component (55) is arranged on the side wall of the box body (1), and the driving component (55) is connected to the linkage component (54) and is used to drive the plurality of nozzles (51) to slide laterally in the guide rail (12).

3. The copper clad laminate etching device according to claim 2, wherein: The linkage assembly (54) comprises a linkage rod (541) and a plurality of fixed columns (542); an end of the connection column (52) facing away from the nozzle (51) is fixedly connected to an extension block (543); the plurality of fixed columns (542) are respectively fixedly arranged in the extension blocks (543) of a plurality of rows of adjacent nozzles (51); the linkage rod (541) is fixedly connected to the ends of the plurality of fixed columns (542); the driving assembly (55) is connected to the linkage rod (541) and is used to drive the linkage rod (541) to move along the length direction of the guide rail (12) in the box body (1).

4. The copper clad laminate etching device according to claim 3, characterized in that: The driving assembly (55) comprises a positioning plate (551), a threaded rod (552), a driving motor (553) and a sliding block (554); the positioning plate (551) is fixedly connected to the end of the side wall of the box (1); the driving motor (553) is fixedly connected to the side wall of the box (1) and is located at an end away from the positioning plate (551); the output shaft of the driving motor (553) extends toward the positioning plate (551); one end of the threaded rod (552) is fixedly connected to the output shaft of the driving motor (553); and the other end of the threaded rod (552) is rotatably connected to the side wall of the positioning plate (551); the sliding block (554) is threadedly connected to the threaded rod (552); the side wall of the sliding block (554) abuts against the side wall of the box (1); and the end of the sliding block (554) is fixedly connected to the linkage rod (541).

5. The copper clad laminate etching device according to claim 1, wherein: The conveying mechanism (2) includes a second threaded rod (21), a conveying arm (22), a conveying block (23), a lifting unit (24), a second driving motor (28), and a clamping assembly (25). The conveying arm (22) is fixedly connected to the side wall of the upper box body. One end of the conveying arm (22) facing away from the loading rack (3) is fixedly connected with a second positioning plate (26). The second driving motor (28) is fixedly connected to the upper surface of one end of the conveying arm (22) facing away from the second positioning plate (26), and the output shaft of the second driving motor (28) extends towards the second positioning plate (26). One end of the second threaded rod (21) is fixedly connected to the output shaft of the second driving motor (28), and the other end of the second threaded rod (21) is rotatably connected to the side wall of the second positioning plate (26). The conveying block (23) is threadedly connected to the second threaded rod (21). An extension rod is fixedly connected to the lower surface of the conveying block (23). A sliding groove for the extension rod to slide is formed through the conveying arm (22). The lower end of the extension rod is fixedly connected with a support seat (27), and the upper surface of the support seat (27) is in contact with the lower surface of the conveying arm (22). The lifting unit (24) is fixedly connected to the end of the support seat (27). The lifting end of the lifting unit (24) extends vertically downward and passes through the support seat (27). The clamping assembly (25) is connected to the lifting end of the lifting unit (24) and is used to clamp the copper clad laminate from the surface of the loading rack (3).

6. The copper clad laminate etching device according to claim 5, characterized in that: The clamping assembly (25) includes a support box (251), a clamping block (252), a support plate (253), a third threaded rod (254), and a third driving motor (255). The support box (251) is fixedly connected to the lifting end of the lifting unit (24), and the support box (251) extends along the width direction of the box body (1). The inside of the support box (251) is hollow and both ends are open. The third driving motor (255) is fixedly connected to one end of the support box (251) facing away from the loading rack (3), and the output shaft of the third driving motor (255) extends towards the loading rack (3). The support plate (253) is fixedly connected to the inner wall of the support box (251). One end of the third threaded rod (254) is fixedly connected to the output shaft of the third driving motor (255), and the other end of the third threaded rod (254) is rotatably connected to the side wall of the support plate (253). The third threaded rod (254) is threadedly connected with a push plate (256), and the side wall of the push plate (256) abuts against the inner wall of the support box (251). A push rod (257) is fixedly connected to the side wall of the push plate (256) on the side facing away from the third driving motor (255). The push rod (257) slidably passes through the support plate (253) and is fixedly connected to the clamping block (252).

7. The copper clad laminate etching device according to claim 6, characterized in that: A groove (2521) is provided on the side wall of the clamping block (252) facing away from the support plate (253), and a telescopic spring (2522) is fixedly connected to the inner wall of the groove (2521); an arc-shaped stop block (2523) is provided at the opening of the groove (2521), and one end of the arc-shaped stop block (2523) extends into the groove (2521) and is fixedly connected to the telescopic spring (2522); the arc-shaped stop block (2523) is arranged in an arc-shaped wave shape toward the side of the loading rack (3); an embedding groove for filling the copper-clad plate is provided on the upper surface of the loading rack (3), and the depth of the embedding groove is less than the thickness of the copper-clad plate; the distance measuring sensor (6) is fixedly connected to the side wall of the support box (251).

8. The copper clad laminate etching device according to claim 7, characterized in that: The two ends of the connecting frame (4) are respectively fixedly connected to the side walls of the upper box body and the lower box body, and the connecting frame (4) is covered on the conveying mechanism (2). The upper box body and the lower box body are respectively fixedly connected to the inner walls on both sides thereof with limiting blocks (13). The cross section of the limiting blocks (13) is wedge-shaped, and the inclined surfaces of the limiting blocks (13) are respectively oriented toward the inner cavity of the box body (1) where they are located. The end of the lower box body is provided with a waste liquid tank for discharging etching liquid, and the outer cover of the loading frame (3) and the box body (1) is provided with a protective cover (14).

9. A method for etching a copper clad laminate, characterized in that: The copper-clad plate etching device according to any one of claims 1 to 8 comprises the following specific steps: S1, storing the copper clad laminate on a loading rack (3) and extracting it through a conveying mechanism (2); S2, using the conveying mechanism (2) to move the copper-clad laminate to the spraying point in the box (1); S3, filling each nozzle (51) with etching liquid of different concentrations and spraying the copper-clad laminate; S4, moving the nozzle (51) while spraying, and adjusting the concentration of the etching solution sprayed by each nozzle (51) in real time; S5. The etched copper-clad board is removed from the box (1).

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