High-precision etching device and etching method for manufacturing copper clad laminates

Abstract

The present invention discloses a high-precision etching device and an etching method for manufacturing copper clad laminates, relating to the technical field of copper clad laminate etching. It includes a box body. A liquid inlet pipe for conveying etching liquid is fixedly connected to the outer wall of the top of the box body. A spraying assembly for etching the copper clad laminate body is arranged inside the box body. The spraying assembly includes a corrugated pipe fixedly connected to one end of the liquid inlet pipe located inside the box body. One end of the corrugated pipe is fixedly connected to a first liquid guiding pipe. Both ends of the first liquid guiding pipe are fixedly connected to second liquid guiding pipes. Spray pipes are inserted into both ends of the second liquid guiding pipe. In the present invention, during the etching process of the copper clad laminate, it can remain stable even under the impact of the etching liquid. Moreover, the side clamps only act on the side of the copper clad laminate body and will not block its front and back surfaces, effectively avoiding etching dead corners, thereby improving the etching precision. At the same time, the clamping on the side can also prevent the occurrence of side etching phenomenon.

Description

Technical Field

[0001] The present invention relates to the technical field of copper clad laminate etching, and more specifically, to a high-precision etching device and an etching method for manufacturing copper clad laminates. Background Art

[0002] A copper clad laminate, also known as a base material, is a sheet material obtained by impregnating a reinforcing material with resin and covering one or both sides with copper foil through hot pressing, and is usually called a copper clad laminate. It is the basic material for making PCBs and is often called the base material. When it is used in the production of multi-layer boards, it is also called the core board. The copper clad laminate is the basic material for manufacturing printed circuit boards (PCBs). Through the etching process, the unnecessary copper foil on the copper clad laminate can be removed, and only the designed circuit pattern is retained. These circuit patterns will be used to connect various electronic components to achieve specific functions of electronic devices.

[0003] When etching a copper clad laminate, the commonly used methods are chemical etching and electrolytic etching. The efficiency of electrolytic etching is relatively low, and in industrial production, chemical etching is mostly used to ensure production capacity. At present, when chemically etching a copper clad laminate, a wet immersion processing method is often used. However, during etching, since the etching solution contacts the copper clad laminate in all directions, the etching is isotropic. When etching the circuit, it not only removes the copper foil outside the circuit but also etches the side of the circuit, resulting in side etching. Moreover, the entire etching reaction speed is fast, difficult to precisely control, and prone to over-etching. At the same time, during immersion etching, copper ions in the etching solution continuously accumulate, resulting in uneven concentration distribution in the tank, triggering natural convection of the solution, diffusion of the active components and reaction products of the etching solution, and unable to ensure uniform concentration of the etching solution on the surface of the workpiece, so the etching rate is inconsistent; the bubbles generated during the etching process will adhere to the surface of the copper clad laminate to hinder the reaction, and the impurities in the etching solution also affect the etching uniformity. Therefore, there is an urgent need for a high-precision etching device and an etching method for manufacturing copper clad laminates to solve the above problems. Summary of the Invention

[0004] In view of the problems in the related art, the present invention provides a high-precision etching device and an etching method for manufacturing copper clad laminates to overcome the above technical problems existing in the prior related art.

[0005] The technical solution of the present invention is realized as follows:

[0006] A high-precision etching device for manufacturing copper clad laminates includes a box body. A liquid inlet pipe for conveying the etching solution is fixedly connected to the outer wall of the top of the box body, and a spraying assembly for etching the copper clad laminate body is arranged inside the box body;

[0007] The spray assembly includes a corrugated pipe fixedly connected to one end of the liquid inlet pipe inside the box body. One end of the corrugated pipe is fixedly connected to a first liquid guide pipe. Both ends of the first liquid guide pipe are fixedly connected to second liquid guide pipes. Both ends of the second liquid guide pipe are inserted with spray pipes. The circumferential outer wall of the spray pipe is provided with nozzles evenly distributed in an arc shape. The nozzles are located on one side of the copper clad laminate body;

[0008] A clamping assembly for ensuring the stability of the copper clad laminate body during the spraying process is arranged inside the box body;

[0009] A lifting assembly is arranged inside the box body. The lifting assembly jacks up the copper clad laminate body through the horizontal movement of the clamping assembly;

[0010] A conveying assembly for continuously etching the copper clad laminate body is arranged inside the box body;

[0011] A lifting assembly is arranged inside the box body. The lifting assembly drives the spray assembly to move vertically through the horizontal movement of the clamping assembly.

[0012] Further, the clamping assembly includes a first motor fixedly connected to the outer wall of one side of the box body. The output end of the first motor is fixedly connected to a second threaded rod. The circumferential outer wall of the second threaded rod is threadedly connected with a first threaded sleeve. The bottom of the first threaded sleeve is fixedly connected to a fixed rod. The output end of the fixed rod is fixedly connected to a clamping plate. The cross section of the clamping plate is L-shaped. Both inner walls of the two sides of the box body are fixedly connected with second guide columns. The circumferential outer wall of the second guide column is slidably connected with a first guide cylinder. The first guide cylinder is fixedly connected to the first threaded sleeve. One side of the clamping plate is fixedly connected with a reinforcing frame. The clamping plate is fixedly connected to another clamping plate through the reinforcing frame. A pressing assembly for cooperating with the lifting assembly to fix the copper clad laminate body is arranged inside the clamping plate.

[0013] Further, the conveying assembly includes fixed shells fixedly connected to the outer walls of the two sides of the box body. Both inner walls of the fixed shell are rotatably connected with driving rollers. The circumferential outer wall of the driving roller is drivingly connected with a conveyor belt. A positioning clip for fixing the copper clad laminate body is arranged on the outer wall of the conveyor belt.

[0014] Further, a support frame is fixedly connected to the outer wall of the bottom of the box body. A control console is fixedly connected to the outer wall of one side of the box body. A waste liquid tank is fixedly connected to the outer wall of the bottom of the box body. A liquid discharge pipe is fixedly connected to one side of the waste liquid tank. Feeding slots for facilitating the feeding of the copper clad laminate body are opened on both sides of the box body.

[0015] Further, the lifting assembly includes a worm gear fixedly connected to the circumferential outer wall of the second threaded lead screw. The worm gear meshes with a worm. Both ends of the worm are fixedly connected with rotating shafts. A gear ring is fixedly connected to the circumferential outer wall of one rotating shaft. A transverse plate is fixedly connected to one inner wall of the box body. The other rotating shaft is rotatably connected to the transverse plate. A gear plate is fixedly connected to the circumferential outer wall of the gear ring. The cross section of the gear plate is semicircular. A second gear is arranged on one side of the gear ring. A third threaded lead screw is fixedly connected to the circumferential inner wall of the second gear. A fixing block is fixedly connected to the circumferential outer wall of the second liquid guide pipe. A reinforcing plate is fixedly connected to one side of the fixing block. A second threaded sleeve is fixedly connected to the middle of the reinforcing plate. The second threaded sleeve is in threaded connection with the third threaded lead screw.

[0016] Further, a third guiding cylinder is fixedly connected to the middle of the other reinforcing plate. A third guiding post is inserted into the circumferential outer wall of the third guiding cylinder. A first fixing plate is fixedly connected to the inside of the box body. Both ends of the third guiding post are respectively fixedly connected to the top inner wall of the box body and the top outer wall of the first fixing plate.

[0017] Further, the jacking assembly includes a first gear arranged on the other side of the gear ring. Both the first gear and the second gear mesh with the gear plate. The diameter of the first gear is larger than that of the second gear. A first threaded lead screw is fixedly connected to the circumferential inner wall of the first gear. A third threaded sleeve is in threaded connection with the circumferential outer wall of the first threaded lead screw. A U-shaped plate is fixedly connected to the circumferential outer wall of the third threaded sleeve. A top plate is fixedly connected to one outer wall of the U-shaped plate. One end of the top plate away from the U-shaped plate is fixedly connected to a bottom plate. The top of the bottom plate is located directly above the copper clad laminate body. Arc-shaped grooves for facilitating the discharge of etching solution are formed on both sides of the bottom plate. A first guiding post is fixedly connected to the top outer wall of the first fixing plate. A second guiding cylinder is slidably connected to the circumferential outer wall of the first guiding post. The second guiding cylinder is fixedly connected to another U-shaped plate.

[0018] Further, the pressing assembly includes a spring fixedly connected to the top inner wall of the clamping plate. A pressing plate is fixedly connected to the bottom end of the spring. The pressing plate is in contact with the top outer wall of the copper clad laminate body. A sliding groove is formed on one outer wall of the clamping plate. A sliding block is slidably connected to the inside of the sliding groove. The sliding block is fixedly connected to the pressing plate. The other end of the sliding block is fixedly connected to a sliding plate. The sliding plate is slidably connected to one outer wall of the clamping plate.

[0019] Further, a flow guiding plate is fixedly connected to one inner wall of the clamping plate. The flow guiding plates are equidistantly distributed on the inner wall of the clamping plate. The flow guiding plate includes an inclined plate and an arc-shaped plate. Equally spaced diversion grooves are formed at one end of the arc-shaped plate close to the copper clad laminate body.

[0020] A high-precision etching method for manufacturing copper clad laminates, which is applied to a high-precision etching device for manufacturing copper clad laminates. The method includes the following steps:

[0021] S1: Place the copper clad laminate to be etched one by one in the positioning clips on the outer wall of the conveyor belt. Start the conveyor belt, smoothly transport the copper clad laminate to the designated etching area in the box, and then the conveyor belt stops running;

[0022] S2: Turn on the first motor. The first motor drives the second threaded screw to rotate, so that the first threaded sleeve drives the clamping plates to move towards each other, clamping and fixing the copper clad laminate from the side. At the same time, the worm gear rotates with the second threaded screw, drives the gear ring and the gear plate to rotate through the worm, makes the second gear drive the third threaded screw to rotate, and drives the spraying assembly to descend to a suitable position on one side of the copper clad laminate;

[0023] S3: Open the etching solution supply valve. The etching solution passes through the corrugated pipe, the first liquid guide pipe, the second liquid guide pipe in sequence through the liquid inlet pipe, and sprays out from the nozzles of the spray pipe to etch the copper clad laminate. During the etching process, the gear ring continues to rotate. In the second half circle, the first gear meshes with the gear plate, drives the first threaded screw to rotate, makes the third threaded sleeve drive the U-shaped plate, the top plate and the bottom plate to rise, eject the copper clad laminate from the positioning clip, and at the same time, the pressure plate is lifted by the copper clad laminate to compress the spring;

[0024] S4: After the etching is completed, close the etching solution supply valve. The first motor rotates in reverse, so that the clamping plates release the copper clad laminate. At the same time, the gear ring rotates in reverse, drives the spraying assembly to rise and reset, and the lifting assembly to descend and reset, and removes the etched copper clad laminate from the conveyor belt to complete an etching process.

[0025] Advantages of the present invention:

[0026] For the high-precision etching device and etching method for manufacturing copper clad laminates provided by the present invention, after the first motor is started, its output end drives the second threaded screw to rotate. Since the first threaded sleeve is threadedly connected to the second threaded screw, when the screw rotates, the first threaded sleeve will move along the axial direction of the screw under the action of the thread. The bottom of the first threaded sleeve is connected to a fixed rod, and the fixed rod is connected to the L-shaped clamping plate, so the movement of the first threaded sleeve will drive the clamping plates to move towards each other. At the same time, the first guide cylinder slides on the second guide post. This structural design ensures the smooth movement of the clamping plates. Through the movement of the two clamping plates towards each other, the copper clad laminate can be firmly clamped and fixed from the side. The advantage of this side clamping and fixing method is that during the etching of the copper clad laminate, it can remain stable even under the impact of the etching solution, and the side clamping only acts on the side of the copper clad laminate, without blocking its front and back sides, effectively avoiding etching dead corners, thereby improving the etching accuracy. At the same time, the side clamping can also prevent the occurrence of side etching.

[0027] The high-precision etching device and etching method for manufacturing copper clad laminates provided by the present invention are such that when the clamping plate moves horizontally to clamp the copper clad laminate body, the worm gear fixedly connected to the second threaded lead screw will rotate together. Since the worm gear meshes with the worm, the rotation of the worm gear will drive the worm to rotate. The two ends of the worm are respectively connected to rotating shafts. One of the rotating shafts is fixed to the gear ring, and the other rotating shaft is rotatably connected to the cross plate. Thus, when the worm rotates, the gear ring and the gear plate are driven to rotate together through the rotating shafts. In the initial stage of the rotation of the gear ring, it meshes with the second gear. At this time, in the first half of the rotation of the gear ring, the second gear will be driven to rotate together, while the first gear remains stationary. When the second gear rotates, the third threaded lead screw fixed to its inner wall rotates accordingly. Since the second threaded sleeve is threadedly connected to the third threaded lead screw, the rotation of the third threaded lead screw will cause the second threaded sleeve to move vertically, thereby driving the spraying assembly to move downward until the spraying assembly moves to one side of the two copper clad laminate bodies. When the gear ring continues to rotate in the second half of the circle, the second gear stops rotating, and the first gear meshes with the gear plate and starts to rotate. The rotation of the first gear drives the first threaded lead screw fixed to its circumferential inner wall to rotate. The third threaded sleeve rises vertically under the threaded action of the first threaded lead screw. The third threaded sleeve drives the U-shaped plate, the top plate, and the bottom plate to rise together. The upward jacking force of the bottom plate ejects the copper clad laminate body from the positioning clamp. During this process, the copper clad laminate body jacks up the pressing plate upward, compressing the spring on the top of the pressing plate, preparing for the reset of the copper clad laminate body after etching is completed. The whole process not only realizes the clamping and protection of the four side plates of the copper clad laminate body, avoiding side etching, but also realizes the automatic adjustment of the device through a clever mechanical structure design, improving the automation degree and convenience of the etching work.

[0028] The high-precision etching device and etching method for manufacturing copper clad laminates provided by the present invention, after the copper clad laminate body is ejected and fixed, the etching solution flows in through the liquid inlet pipe, passes through the corrugated pipe, the first liquid guide pipe, and the second liquid guide pipe in sequence, and finally sprays out from the nozzles distributed in an arc shape at equal distances on both sides of the spray pipe. The sprayed etching solution continuously acts on one side of two groups of copper clad laminates, thereby realizing the simultaneous etching of both sides of multiple groups of copper clad laminates. During the etching process, after the etching solution sprayed from the nozzles makes full contact with the etching area on the surface of the copper clad laminate body, it quickly flows down due to the action of gravity, which enables fresh etching solution to be replenished to the etching site in a timely manner, accelerating the etching reaction speed. The shorter etching time reduces the residence time of the board in the etching solution, thereby effectively reducing the degree of side etching. In addition, when the etching solution sprayed from the nozzles flows from top to bottom on the surface of the copper clad laminate body, it will encounter a flow guide plate. The flow guide plate is composed of an inclined plate and an arc-shaped plate. The etching solution is blocked by the inclined plate and the arc-shaped plate, and its flow direction will change, thereby expanding the contact area and time between the etching solution and the lower part of the copper clad laminate body, enabling the area not directly impacted by the nozzles to still be etched sufficiently. At the same time, the multi-component flow grooves opened at one end of the arc-shaped plate close to the copper clad laminate body can evenly disperse the etching solution, making it flow more evenly over the surface of the copper clad laminate body, ensuring the uniformity of the entire etching process and further improving the etching precision of the copper clad laminate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic front view structure diagram of the whole of the present invention.

[0031] Figure 2 It is a schematic half-sectional view structure diagram of the whole of the present invention.

[0032] Figure 3 For the present invention Figure 2 The enlarged schematic structure diagram of part A in it.

[0033] Figure 4 It is a schematic sectional view structure diagram of the top of the box body of the present invention.

[0034] Figure 5 For the present invention Figure 4 The enlarged schematic structure diagram of part B in it.

[0035] Figure 6 It is the enlarged schematic structure diagram of the clamping assembly, lifting assembly, pressing assembly and jacking assembly of the present invention.

[0036] Figure 7 For the present invention Figure 6 The enlarged structural schematic diagram at position C in the present invention.

[0037] Figure 8 The overall end face structural schematic diagram of the present invention.

[0038] Figure 9 The structural schematic diagram of the second embodiment in the present invention.

[0039] In the figure:

[0040] 1. Box body; 2. Control console; 3. Liquid inlet pipe; 4. First motor; 5. Waste liquid tank; 6. Drain pipe; 7. Support frame; 8. Conveyor belt; 9. Positioning clamp; 10. Driving roller; 11. Fixed shell; 12. First fixing plate; 13. Copper clad laminate body; 14. Spring; 15. Pressing plate; 16. Clamping plate; 17. Bottom plate; 18. Arc groove; 19. Spray pipe; 20. Nozzle; 21. First liquid guide pipe; 22. Bellows; 23. Second liquid guide pipe; 24. First gear; 25. First threaded lead screw; 26. Gear ring; 27. Gear plate; 28. Second gear; 29. First guide post; 30. Worm gear; 31. Second threaded lead screw; 32. Cross plate; 33. Worm; 34. Second guide post; 35. First guide cylinder; 36. First threaded sleeve; 37. Fixed rod; 38. Fixed block; 39. U-shaped plate; 40. Second guide cylinder; 41. Chute; 42. Slide plate; 43. Reinforcing frame; 44. Third guide post; 45. Third guide cylinder; 46. Deflector; 4601. Inclined plate; 4602. Arc plate; 4603. Shunt groove; 47. Second threaded sleeve; 48. Third threaded sleeve; 49. Third threaded lead screw; 50. Top plate. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0042] Embodiment 1

[0043] Please refer to Figures 1-8 , a high-precision etching device for manufacturing copper clad laminates, including a box body 1, a liquid inlet pipe 3 fixedly connected to the outer wall of the top of the box body 1 for conveying etching liquid, and a spraying assembly for etching the copper clad laminate body 13 arranged inside the box body 1;

[0044] The spraying assembly includes a corrugated pipe 22 fixedly connected to one end of the liquid inlet pipe 3 inside the box body 1. One end of the corrugated pipe 22 is fixedly connected to a first liquid guiding pipe 21. Both ends of the first liquid guiding pipe 21 are fixedly connected to second liquid guiding pipes 23. Spray pipes 19 are inserted into both ends of the second liquid guiding pipes 23. The outer circumferential wall of the spray pipe 19 is provided with spray heads 20 evenly distributed in an arc at equal intervals. The spray heads 20 are located on one side of the copper clad laminate 13;

[0045] A clamping assembly for ensuring the stability of the copper clad laminate 13 during the spraying process is arranged inside the box body 1;

[0046] A lifting assembly is arranged inside the box body 1. The lifting assembly jacks up the copper clad laminate 13 through the horizontal movement of the clamping assembly;

[0047] A conveying assembly for continuously etching the copper clad laminate 13 is arranged inside the box body 1;

[0048] A lifting assembly is arranged inside the box body 1. The lifting assembly drives the spraying assembly to move vertically through the horizontal movement of the clamping assembly. The liquid inlet pipe 3 introduces the etching solution into the box body 1. Through the flexible connection of the corrugated pipe 22, the pipeline damage can be avoided when the spraying assembly moves. The etching solution flows through the first liquid guiding pipe 21 and the second liquid guiding pipes 23 in sequence, and finally sprays out from the spray heads 20 evenly distributed in an arc on the outer circumferential wall of the spray pipe 19. This structural design enables the spray heads 20 to spray and etch the copper clad laminate 13 from a specific side, avoiding the side etching problem caused by the etching solution contacting the copper clad laminate in all directions. At the same time, the etching area can be accurately controlled according to the distribution of the spray heads 20, improving the etching accuracy.

[0049] Preferably, the clamping assembly includes a first motor 4 fixedly connected to the outer wall of one side of the box body 1. The output end of the first motor 4 is fixedly connected with a second threaded lead screw 31. A first threaded sleeve 36 is threadedly connected to the circumferential outer wall of the second threaded lead screw 31. The bottom of the first threaded sleeve 36 is fixedly connected with a fixed rod 37. The output end of the fixed rod 37 is fixedly connected with a clamping plate 16. The cross-section of the clamping plate 16 is L-shaped. Second guide posts 34 are fixedly connected to both inner walls of the box body 1. A first guide cylinder 35 is slidably connected to the circumferential outer wall of the second guide post 34. The first guide cylinder 35 is fixedly connected with the first threaded sleeve 36. A reinforcing frame 43 is fixedly connected to one side of the clamping plate 16. The clamping plate 16 is fixedly connected to another clamping plate 16 through the reinforcing frame 43. A pressing assembly for cooperating with the lifting assembly to fix the copper clad laminate 13 is arranged inside the clamping plate 16. After the first motor 4 is started, its output end drives the second threaded lead screw 31 to rotate. Based on the principle of screw drive, the first threaded sleeve 36 moves on the lead screw, thereby driving the fixed rod 37 and the L-shaped clamping plate 16 connected thereto to move. The cooperation between the second guide post 34 and the first guide cylinder 35 ensures the smoothness and linearity of the movement of the clamping plate 16. The reinforcing frame 43 connects the two clamping plates 16, enhancing the overall clamping stability. The side clamping method of the clamping plate 16 can not only effectively fix the copper clad laminate 13, prevent it from shaking due to the impact of the etching solution during the etching process, but also protect the side of the copper clad laminate 13, avoid the occurrence of side etching phenomenon, and at the same time will not block the front and back sides of the copper clad laminate 13, eliminating the etching dead angle and improving the etching accuracy.

[0050] Preferably, the conveying assembly includes fixed shells 11 fixedly connected to the outer walls of both sides of the box body 1. Driving rollers 10 are rotatably connected to both inner walls of the fixed shells 11. A conveyor belt 8 is drivingly connected to the circumferential outer wall of the driving rollers 10. Positioning clips 9 for fixing the copper clad laminate 13 are arranged on the outer wall of the conveyor belt 8. The fixed shells 11 are installed on the outer walls of both sides of the box body 1. The driving rollers 10 inside rotate to drive the conveyor belt 8 to operate. The positioning clips 9 on the outer wall of the conveyor belt 8 can fix the copper clad laminate 13, realizing the continuous conveying of the copper clad laminate 13, facilitating the sequential feeding of the copper clad laminate 13 to be etched into the box body 1 for etching treatment, improving the efficiency and continuity of the etching work, and meeting the production capacity requirements in industrial production.

[0051] Preferably, a support frame 7 is fixedly connected to the outer wall of the bottom of the box body 1. A control console 2 is fixedly connected to the outer wall of one side of the box body 1. A waste liquid tank 5 is fixedly connected to the outer wall of the bottom of the box body 1. A drain pipe 6 is fixedly connected to one side of the waste liquid tank 5. Feeding slots for facilitating the feeding of the copper clad laminate 13 are opened on both sides of the box body 1. The waste liquid tank 5 is used to collect the waste liquid generated during the etching process. The waste liquid can be discharged through the drain pipe 6 for subsequent treatment to avoid environmental pollution by the waste liquid.

[0052] Preferably, the lifting component includes a worm gear 30 fixedly connected to the outer circumferential wall of the second threaded lead screw 31. The worm gear 30 meshes with a worm 33. Both ends of the worm 33 are fixedly connected with rotating shafts. A gear ring 26 is fixedly connected to the outer circumferential wall of one rotating shaft. A cross plate 32 is fixedly connected to the inner wall of one side of the box body 1. The other rotating shaft is rotatably connected to the cross plate 32. A gear plate 27 is fixedly connected to the outer circumferential wall of the gear ring 26. The cross section of the gear plate 27 is semicircular. A second gear 28 is arranged on one side of the gear ring 26. A third threaded lead screw 49 is fixedly connected to the inner circumferential wall of the second gear 28. A fixing block 38 is fixedly connected to the outer circumferential wall of the second liquid guide pipe 23. A reinforcing plate is fixedly connected to one side of the fixing block 38. A second threaded sleeve 47 is fixedly connected to the middle of the reinforcing plate. The second threaded sleeve 47 is threadedly connected to the third threaded lead screw 49. When the second threaded lead screw 31 rotates, it drives the worm gear 30 to rotate. The worm gear 30 meshes with the worm 33, so that the worm 33 drives the gear ring 26 and the gear plate 27 to rotate through the rotating shafts at both ends. In the initial stage of the rotation of the gear ring 26, it meshes with the second gear 28, and the second gear 28 drives the third threaded lead screw 49 to rotate. Through the threaded connection between the second threaded sleeve 47 and the third threaded lead screw 49, the vertical descent of the spraying component is realized. When the gear ring 26 rotates in the second half circle, the first gear 24 meshes with the gear plate 27, realizing the action of the subsequent lifting component. Thus, by using the rotation of the second threaded lead screw 31 in the clamping component, the automatic lifting of the spraying component is realized, enabling it to accurately move to a suitable position to etch the copper clad laminate 13, improving the automation degree and working precision of the device.

[0053] Preferably, a third guiding cylinder 45 is fixedly connected to the middle of the other reinforcing plate. A third guiding post 44 is inserted into the outer circumferential wall of the third guiding cylinder 45. A first fixing plate 12 is fixedly connected to the inside of the box body 1. Both ends of the third guiding post 44 are respectively fixedly connected to the inner wall of the top of the box body 1 and the outer wall of the top of the first fixing plate 12. The third guiding cylinder 45 cooperates with the third guiding post 44 to play a guiding and stabilizing role in the lifting process of the spraying component. When the second threaded sleeve 47 moves vertically driven by the third threaded lead screw 49, the third guiding cylinder 45 slides along the third guiding post 44, ensuring the smoothness of the lifting process of the spraying component, preventing it from shifting or shaking during the movement, so as to ensure that the spray head 20 can accurately spray and etch the copper clad laminate 13, improving the uniformity and precision of etching.

[0054] Preferably, the jacking assembly includes a first gear 24 disposed on the other side of the gear ring 26. Both the first gear 24 and the second gear 28 are meshed with the gear plate 27. The diameter of the first gear 24 is larger than that of the second gear 28. The inner circumferential wall of the first gear 24 is fixedly connected with a first threaded lead screw 25. A third threaded sleeve 48 is threadedly connected to the outer circumferential wall of the first threaded lead screw 25. The outer circumferential wall of the third threaded sleeve 48 is fixedly connected with a U-shaped plate 39. One outer wall of the U-shaped plate 39 is fixedly connected with a top plate 50. One end of the top plate 50 away from the U-shaped plate 39 is fixedly connected with a bottom plate 17. The top of the bottom plate 17 is located directly above the copper clad laminate 13. Arc-shaped grooves 18 for facilitating the discharge of the etching solution are provided on both sides of the bottom plate 17. The top outer wall of the first fixing plate 12 is fixedly connected with a first guiding column 29. A second guiding cylinder 40 is slidably connected to the outer circumferential wall of the first guiding column 29. The second guiding cylinder 40 is fixedly connected with another U-shaped plate 39. When the gear ring 26 rotates half a turn, the first gear 24 meshes with the gear plate 27 and rotates, driving the first threaded lead screw 25 to rotate. The third threaded sleeve 48 rises vertically under the action of the first threaded lead screw 25, thereby driving the U-shaped plate 39, the top plate 50 and the bottom plate 17 to rise, and ejecting the copper clad laminate 13 from the positioning clamp 9. The arc-shaped grooves 18 on both sides of the bottom plate 17 facilitate the discharge of the etching solution, avoiding the accumulation of the etching solution and affecting the etching effect. The cooperation between the first guiding column 29 and the second guiding cylinder 40 ensures the stability of the rising process of the jacking assembly, enabling the copper clad laminate 13 to be accurately jacked up and remain stable during the etching process, avoiding the interference of the positioning clamp 9 on the etching work, and improving the accuracy of etching.

[0055] Preferably, the pressing assembly includes a spring 14 fixedly connected to the inner wall of the top of the clamping plate 16. The bottom end of the spring 14 is fixedly connected with a pressing plate 15. The pressing plate 15 is in contact with the outer wall of the top of the copper clad laminate 13. A sliding groove 41 is provided on one outer wall of the clamping plate 16. A slider is slidably connected to the inside of the sliding groove 41. The slider is fixedly connected with the pressing plate 15. The other end of the slider is fixedly connected with a sliding plate 42. The sliding plate 42 is slidably connected to one outer wall of the clamping plate 16. When the copper clad laminate 13 is jacked up by the jacking assembly, it will push the pressing plate 15 upward, compressing the spring 14. The elastic force of the spring 14 can apply a downward pressure to the copper clad laminate 13, further fixing the copper clad laminate 13 to prevent it from jumping or shifting during the etching process. The structural design of the sliding groove 41, the slider and the sliding plate 42 enables the pressing plate 15 to move smoothly up and down, ensuring that the pressing assembly can effectively cooperate with the jacking assembly to stably fix the copper clad laminate 13 and improve the stability and accuracy of the etching process.

[0056] Embodiment Two

[0057] Please refer to Figure 9, A high-precision etching device for manufacturing copper clad laminates. Compared with the first embodiment, this embodiment further includes a flow guide plate 46 fixedly connected to the inner wall of one side of the clamping plate 16. The flow guide plates 46 are evenly distributed on the inner wall of the clamping plate 16. The flow guide plate 46 includes an inclined plate 4601 and an arc plate 4602. The end of the arc plate 4602 close to the copper clad laminate body 13 is provided with evenly distributed diversion grooves 4603. The flow guide plate 46 on the inner wall of one side of the clamping plate 16 is composed of the inclined plate 4601 and the arc plate 4602, and the end of the arc plate 4602 close to the copper clad laminate body 13 is provided with the diversion grooves 4603. When the etching solution sprayed by the nozzle 20 flows on the surface of the copper clad laminate body 13 and encounters the flow guide plate 46, the inclined plate 4601 and the arc plate 4602 will change the flow direction of the etching solution, expanding the contact area and time between the etching solution and the lower part of the copper clad laminate body 13, so that the area not directly impacted by the nozzle 20 can also be fully etched. The diversion grooves 4603 evenly disperse the etching solution, enabling the etching solution to flow more evenly over the surface of the copper clad laminate body 13, ensuring the uniformity of the entire etching process and further improving the etching accuracy.

[0058] A high-precision etching method for manufacturing copper clad laminates, which is applied to the high-precision etching device for manufacturing copper clad laminates. The method includes the following steps:

[0059] Step 1: Place the copper clad laminate bodies 13 to be etched one by one in the positioning clamps 9 on the outer wall of the conveyor belt 8. Start the conveyor belt 8 to smoothly transport the copper clad laminate bodies 13 to the designated etching area in the box body 1, and then the conveyor belt 8 stops running;

[0060] Step 2: Turn on the first motor 4. The first motor 4 drives the second threaded lead screw 31 to rotate, so that the first threaded sleeve 36 drives the clamping plate 16 to move towards each other to clamp and fix the copper clad laminate body 13. At the same time, the worm gear 30 rotates with the second threaded lead screw 31, driving the gear ring 26 and the gear plate 27 to rotate through the worm 33, so that the second gear 28 drives the third threaded lead screw 49 to rotate, driving the spraying assembly to descend to a suitable position on one side of the copper clad laminate body 13;

[0061] Step 3: Open the etching solution supply valve. The etching solution passes through the corrugated pipe 22, the first liquid guide pipe 21, and the second liquid guide pipe 23 in sequence through the liquid inlet pipe 3 and is sprayed out from the nozzle 20 of the spray pipe 19 to etch the copper clad laminate body 13. During the etching process, the gear ring 26 continues to rotate. In the second half circle, the first gear 24 meshes with the gear plate 27, driving the first threaded lead screw 25 to rotate, so that the third threaded sleeve 48 drives the U-shaped plate 39, the top plate 50, and the bottom plate 17 to rise, ejecting the copper clad laminate body 13 from the positioning clamp 9. At the same time, the pressing plate 15 is lifted by the copper clad laminate body 13 to compress the spring 14;

[0062] Step 4: After the etching is completed, close the supply valve of the etching solution. The first motor 4 rotates in reverse to loosen the clamping plate 16 from the copper clad laminate 13. At the same time, the gear ring 26 rotates in reverse to drive the spray assembly to rise and reset, and the lifting assembly to descend and reset, and remove the etched copper clad laminate 13 from the conveyor belt 8, completing one etching process.

[0063] In summary, by means of the above technical solutions of the present invention, during use, the staff first insert the copper clad laminates 13 to be etched into the positioning clips 9 at the top of the conveyor belt 8 one by one. The positioning clips 9 ensure the stability of the copper clad laminates 13 during transportation. Subsequently, the copper clad laminates 13 are transported into the interior of the box body 1 through the conveyor belt 8. When the copper clad laminate moves to the designated area, the conveyor belt 8 stops working. Then, the first motor 4 is started and the external supply (etching solution) valve is opened. The first motor 4 can drive the second threaded lead screw 31 to rotate and the worm gear 30 to rotate together. During the rotation of the second threaded lead screw 31, the two first threaded sleeves 36 threadedly connected to its outer wall can drive the two clamping plates 16 to move towards each other. At this time, the two clamping plates 16 can effectively clamp and fix the copper clad laminate 13 from the sides, ensuring that the copper clad laminate 13 remains stable when subjected to etching impact during subsequent etching. Moreover, the side clamping and fixing method of the copper clad laminate can not only protect its sides to avoid side etching, but also will not block the front and back sides of the copper clad laminate 13, and there will be no problem of etching dead corners, improving the etching accuracy of the copper clad laminate 13.

[0064] During the horizontal movement of the clamping plate 16 to clamp the copper clad laminate 13, the worm gear 30 drives the worm 33 to rotate, and the worm 33 drives the gear ring 26 and the gear plate 27 to rotate together through the rotating shaft. When the rotating shaft starts to rotate, the gear ring 26 is engaged with the second gear 28. Therefore, in the first half of the rotation of the gear ring 26, the second gear 28 will rotate with it, while the first gear 24 will remain in place. When the second gear 28 rotates, it can drive the third threaded lead screw 49 fixed to its inner wall to rotate. Through the rotation of the third threaded lead screw 49, the second threaded sleeve 47 threadedly connected to its outer wall can move vertically together, so as to drive the spray assembly above the box body 1 downward until the gear ring 26 rotates half a circle. At this time, the spray assembly moves downward to one side of the two copper clad laminates 13.

[0065] When the gear ring 26 continuously rotates together with the worm 33, the second gear 28 remains stationary while the first gear 24 meshes with the gear plate 27 and rotates. The rotation of the first gear 24 can drive the rotation of the first threaded lead screw 25. During the rotation of the first threaded lead screw 25, the third threaded sleeve 48 threadedly connected to its outer wall can move vertically. The third threaded sleeve 48 drives the U-shaped plate 39, the top plate 50, and the bottom plate 17 to rise together. At this time, the bottom plate 17 applies the upward jacking force to the bottom of the copper clad laminate 13, so as to be able to eject the copper clad laminate 13 from the positioning clip 9, avoiding the positioning clip 9 from affecting the etching work of the copper clad laminate 13. At the same time, when the copper clad laminate 13 is ejected from the positioning clip 9, an upward thrust is applied to the pressing plate 15, making the spring 14 on the top of the pressing plate 15 in a compressed state, thus facilitating the subsequent reset work of the copper clad laminate 13 after etching. During the entire clamping and positioning process, the clamping and protection of the four side plates of the copper clad laminate 13 can be realized, avoiding the occurrence of side etching of the copper clad laminate;

[0066] After the copper clad laminate 13 is ejected and fixed, the etching solution enters the liquid inlet pipe 3 and is finally sprayed out from the nozzles 20 on both sides of the spray pipe 19 through a series of pipelines. The sprayed etching solution repeatedly acts on one side of the two groups of copper clad laminates, realizing the simultaneous etching of both sides of multiple groups of copper clad laminates. When the etching solution continuously sprays out from the nozzles 20, it comes into full contact with the etching area on the surface of the copper clad laminate 13 and then quickly flows down, enabling fresh etching solution to be timely supplemented to the etching site, accelerating the etching reaction speed, reducing the residence time of the board in the etching solution, thereby reducing the degree of side etching. And during the entire spraying process, the situation of too high or too low local etching solution concentration is avoided, improving the etching accuracy of the copper clad laminate 13;

[0067] At the same time, when the etching solution sprayed out from the nozzles 20 flows from top to bottom on the surface of the copper clad laminate 13, it will be blocked by the inclined plate 4601 and the arc plate 4602, thereby expanding the contact area and time of the etching solution with the lower part of the copper clad laminate 13, enabling the area not impacted by the nozzles 20 to still fully carry out the etching work. And the multi-component flow grooves 4603 opened on one side of the arc plate 4602 can make the etching solution flow more evenly over the surface of the copper clad laminate 13, making the entire etching process more uniform.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision etching device for copper-clad laminate manufacturing, comprising a housing (1), characterized in that: A liquid inlet pipe (3) for conveying etching liquid is fixedly connected to the top outer wall of the box body (1), and a spray assembly for etching the copper-clad board body (13) is arranged inside the box body (1); The spray assembly comprises a bellows (22) fixedly connected to one end of the liquid inlet pipe (3) located inside the box (1); one end of the bellows (22) is fixedly connected to a first liquid guide pipe (21); both ends of the first liquid guide pipe (21) are fixedly connected to second liquid guide pipes (23); both ends of the second liquid guide pipe (23) are plugged with a nozzle (19); the outer circumferential wall of the nozzle (19) is provided with nozzles (20) distributed in an arc shape at equal distances; the nozzles (20) are located on one side of the copper-clad plate body (13); The box (1) is provided with a clamping assembly for ensuring the stability of the copper-clad board (13) during the spraying process; A lifting assembly is arranged inside the box (1), and the lifting assembly lifts up the copper-clad plate body (13) through the horizontal movement of the clamping assembly; A conveying assembly for continuously etching the copper-clad plate body (13) is arranged inside the box body (1); A lifting assembly is arranged inside the box (1), and the lifting assembly drives the spray assembly to move vertically through the horizontal movement of the clamping assembly. The clamping assembly comprises a first motor (4) fixedly connected to an outer wall of one side of the box (1), a second threaded screw (31) is fixedly connected to the output end of the first motor (4), a first threaded sleeve (36) is threadedly connected to the circumferential outer wall of the second threaded screw (31), a fixing rod (37) is fixedly connected to the bottom of the first threaded sleeve (36), and the output end of the fixing rod (37) is fixedly connected to a clamping plate (16), and the clamping plate (16) is fixedly connected to the clamping plate (16). ) has an L-shaped cross section, the inner walls on both sides of the box body (1) are fixedly connected with second guide columns (34), the circumferential outer wall of the second guide column (34) is slidably connected with a first guide cylinder (35), the first guide cylinder (35) is fixedly connected to the first threaded sleeve (36), one side of the clamping plate (16) is fixedly connected with a reinforcing frame (43), the clamping plate (16) is fixedly connected to another clamping plate (16) through the reinforcing frame (43), and a clamping assembly for cooperating with a lifting assembly to fix the copper-clad plate body (13) is provided inside the clamping plate (16).

2. The high-precision etching device for copper-clad laminate manufacturing according to claim 1, characterized in that: The conveying assembly comprises a fixed shell (11) fixedly connected to the outer walls on both sides of the box body (1), the inner walls on both sides of the fixed shell (11) are rotatably connected to transmission rollers (10), the circumferential outer walls of the transmission rollers (10) are transmission-connected to a conveyor belt (8), and the outer wall of the conveyor belt (8) is provided with a positioning clamp (9) for fixing the copper-clad plate body (13).

3. The high-precision etching device for copper-clad laminate manufacturing according to claim 2, characterized in that: The bottom outer wall of the box body (1) is fixedly connected to a support frame (7), one side outer wall of the box body (1) is fixedly connected to a control console (2), the bottom outer wall of the box body (1) is fixedly connected to a waste liquid tank (5), one side of the waste liquid tank (5) is fixedly connected to a drain pipe (6), and both sides of the box body (1) are provided with a loading trough for convenient feeding of the copper clad plate body (13).

4. The high-precision etching device for copper-clad laminate manufacturing according to claim 3, characterized in that: The lifting assembly comprises a worm wheel (30) fixedly connected to the circumferential outer wall of the second threaded screw (31), the worm wheel (30) meshing with a worm (33), both ends of the worm (33) are fixedly connected to a rotating shaft, the circumferential outer wall of one rotating shaft is fixedly connected to a gear ring (26), one side inner wall of the box body (1) is fixedly connected to a transverse plate (32), the other rotating shaft is rotatably connected to the transverse plate (32), the circumferential outer wall of the gear ring (26) is fixedly connected to a gear plate (27), and the gear plate (27) is fixedly connected to the gear plate (27). The cross section of the wheel plate (27) is semicircular, a second gear (28) is provided on one side of the gear ring (26), a third threaded screw (49) is fixedly connected to the circumferential inner wall of the second gear (28), a fixed block (38) is fixedly connected to the circumferential outer wall of the second liquid guide tube (23), a reinforcing plate is fixedly connected to one side of the fixed block (38), a second threaded sleeve (47) is fixedly connected to the middle of the reinforcing plate, and the second threaded sleeve (47) is threadedly connected to the third threaded screw (49).

5. The high-precision etching device for copper-clad laminate manufacturing according to claim 4, characterized in that: A third guide cylinder (45) is fixedly connected to the middle of another reinforcing plate, a third guide column (44) is inserted into the circumferential outer wall of the third guide cylinder (45), the interior of the box body (1) is fixedly connected to the first fixing plate (12), and the two ends of the third guide column (44) are respectively fixedly connected to the top inner wall of the box body (1) and the top outer wall of the first fixing plate (12).

6. The high-precision etching device for copper-clad laminate manufacturing according to claim 5, characterized in that: The lifting assembly comprises a first gear (24) arranged on the other side of the gear ring (26), the first gear (24) and the second gear (28) are both meshed with the gear plate (27), the diameter of the first gear (24) is larger than the diameter of the second gear (28), a first threaded screw (25) is fixedly connected to the circumferential inner wall of the first gear (24), a third threaded sleeve (48) is threadedly connected to the circumferential outer wall of the first threaded screw (25), a U-shaped plate (39) is fixedly connected to the circumferential outer wall of the third threaded sleeve (48), and the U-shaped plate (39) is fixedly connected to the circumferential outer wall of the third threaded sleeve (48). 9), a top plate (50) is fixedly connected to an outer wall on one side of the first fixed plate (12), an end of the top plate (50) away from the U-shaped plate (39) is fixedly connected to a bottom plate (17), the top of the bottom plate (17) is located directly above the copper-clad plate body (13), and arc grooves (18) are provided on both sides of the bottom plate (17) for facilitating the discharge of etching liquid, a first guide column (29) is fixedly connected to the top outer wall of the first fixed plate (12), a second guide cylinder (40) is slidably connected to the circumferential outer wall of the first guide column (29), and the second guide cylinder (40) is fixedly connected to another U-shaped plate (39).

7. The high-precision etching device for copper-clad laminate manufacturing according to claim 6, characterized in that: The clamping assembly includes a spring (14) fixedly connected to the top inner wall of the clamping plate (16), the bottom end of the spring (14) is fixedly connected to a pressure plate (15), the pressure plate (15) is in contact with the top outer wall of the copper-clad board (13), a slide groove (41) is provided on one side outer wall of the clamping plate (16), a slider is slidably connected inside the slide groove (41), the slider is fixedly connected to the pressure plate (15), the other end of the slider is fixedly connected to a slide plate (42), the slide plate (42) is slidably connected to one side outer wall of the clamping plate (16).

8. The high-precision etching device for copper-clad laminate manufacturing according to claim 7, characterized in that: A guide plate (46) is fixedly connected to the inner wall of one side of the clamping plate (16), and the guide plates (46) are distributed at equal distances on the inner wall of the clamping plate (16). The guide plate (46) comprises an inclined plate (4601) and an arc plate (4602), and one end of the arc plate (4602) close to the copper-clad plate body (13) is provided with diversion grooves (4603) distributed at equal distances.

9. A high-precision etching method for copper-clad laminate manufacturing, applied to the high-precision etching device for copper-clad laminate manufacturing according to claim 8, characterized in that: The method comprises the following steps: S1: placing the copper-clad boards (13) to be etched one by one in the positioning clamps (9) on the outer wall of the conveyor belt (8), starting the conveyor belt (8), and smoothly conveying the copper-clad boards (13) to the designated etching area in the box (1), and then stopping the conveyor belt (8); S2: Turn on the first motor (4), the first motor (4) drives the second threaded screw (31) to rotate, so that the first threaded sleeve (36) drives the clamping plate (16) to move in opposite directions, and fixes the copper-clad plate body (13) side clamp. At the same time, the worm wheel (30) rotates with the second threaded screw (31), and drives the gear ring (26) and the gear plate (27) to rotate through the worm (33), so that the second gear (28) drives the third threaded screw (49) to rotate, and drives the spray assembly to descend to a suitable position on one side of the copper-clad plate body (13); S3: Open the etching liquid supply valve, and the etching liquid passes through the liquid inlet pipe (3) in sequence through the bellows (22), the first liquid guide pipe (21), and the second liquid guide pipe (23), and is sprayed out from the nozzle (20) of the nozzle (19) to etch the copper-clad board (13). During the etching process, the gear ring (26) rotates continuously. In the second half of the rotation, the first gear (24) meshes with the gear plate (27), driving the first threaded screw (25) to rotate, so that the third threaded sleeve (48) drives the U-shaped plate (39), the top plate (50) and the bottom plate (17) to rise, and the copper-clad board (13) is ejected from the positioning clamp (9). At the same time, the pressing plate (15) is lifted by the copper-clad board (13) to compress the spring (14); S4: After etching is completed, the etching liquid supply valve is closed, the first motor (4) is reversed, so that the clamping plate (16) releases the copper-clad board (13), and at the same time the gear ring (26) is reversed, driving the spray assembly to rise and reset, and the lifting assembly to fall and reset, and the etched copper-clad board (13) is removed from the conveyor belt (8), completing an etching process.

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