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

Abstract

The invention discloses a high-precision etching device for manufacturing a copper-clad plate and an etching method, and relates to the technical field of copper-clad plate etching, the high-precision etching device comprises a box body, the outer wall of the top of the box body is fixedly connected with a liquid inlet pipe used for conveying etching liquid, and a spraying assembly used for etching a copper-clad plate body is arranged in the box body; the spraying assembly comprises a corrugated pipe fixedly connected to the end, located in the box body, of the liquid inlet pipe, one end of the corrugated pipe is fixedly connected with a first liquid guide pipe, the two ends of the first liquid guide pipe are fixedly connected with second liquid guide pipes, and the two ends of each second liquid guide pipe are connected with spraying pipes in an inserted mode. In the etching process of the copper-clad plate, the copper-clad plate can be kept stable even if being impacted by etching liquid, the side clamp only acts on the side face of the copper-clad plate body, the front face and the back face of the copper-clad plate body cannot be shielded, etching dead angles are effectively avoided, the etching precision is further improved, and meanwhile the side face clamping can prevent the side etching phenomenon.

Description

Technical Field

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

[0002] Copper clad laminate, also known as substrate, is a plate-like material made by hot pressing a reinforcing material impregnated with resin and covered with copper foil on one or both sides. It is usually called copper clad laminate. It is the basic material for PCB and is often called substrate. When it is used in the production of multilayer boards, it is also called core board. Copper clad laminate is the basic material for manufacturing printed circuit boards (PCB). Through etching process, the unnecessary copper foil on the copper clad laminate can be removed, leaving only the designed circuit patterns. These circuit patterns will be used to connect various electronic components to realize the specific functions of electronic equipment.

[0003] When etching copper-clad laminates, the commonly used methods are chemical etching and electrolytic etching. The efficiency of electrolytic etching is relatively low. In order to ensure the production capacity of production, chemical etching is mostly used in industrial production. At present, the wet immersion processing method is often used for chemical etching of copper-clad laminates. However, during etching, the etching liquid contacts the copper-clad laminate in all directions, and the etching is isotropic. When etching the circuit, not only the copper foil outside the circuit is removed, but also the side of the circuit is etched to produce side etching. Moreover, the entire etching reaction speed is fast, which is difficult to accurately control and prone to over-etching. At the same time, during immersion etching, copper ions in the etching liquid continue to accumulate, resulting in uneven concentration distribution in the tank, causing natural convection of the solution, diffusion of the active components of the etching liquid and the reaction products, and the uniform concentration of the etching liquid on the surface of the workpiece cannot be guaranteed, and the etching rate is also 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 liquid also affect the etching uniformity. Therefore, high-precision etching devices and etching methods for copper-clad laminate manufacturing are urgently needed to solve the above problems. Summary of the invention

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

[0005] The technical solution of the present invention is achieved in this way:

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

[0007] The spray assembly includes a bellows fixedly connected to one end of the liquid inlet pipe located inside the box, one end of the bellows is fixedly connected to a first liquid guide pipe, both ends of the first liquid guide pipe are fixedly connected to a second liquid guide pipe, both ends of the second liquid guide pipe are plugged with a nozzle, and the circumferential outer wall of the nozzle is provided with nozzles distributed in an arc shape at equal distances, and the nozzles are located on one side of the copper-clad board body;

[0008] The box body is provided with a clamping assembly for ensuring the stability of the copper-clad board body during the spraying process;

[0009] A lifting assembly is arranged inside the box body, and the lifting assembly lifts the copper-clad plate body through the horizontal movement of the clamping assembly;

[0010] The box body is provided with a conveying assembly for continuously etching the copper-clad board body;

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

[0012] Furthermore, the clamping assembly includes a first motor fixedly connected to the outer wall of one side of the box body, a second threaded screw is fixedly connected to the output end of the first motor, a first threaded sleeve is threadedly connected to the circumferential outer wall of the second threaded screw, a fixing rod is fixedly connected to the bottom of the first threaded sleeve, a clamping plate is fixedly connected to the output end of the fixing rod, the cross-section of the clamping plate is L-shaped, second guide columns are fixedly connected to the inner walls of both sides of the box body, a first guide cylinder is slidably connected to the circumferential outer wall of the second guide column, the first guide cylinder is fixedly connected to the first threaded sleeve, a reinforcement frame is fixedly connected to one side of the clamping plate, the clamping plate is fixedly connected to another clamping plate through the reinforcement frame, and a clamping assembly for cooperating with the jacking assembly to fix the copper-clad board body is provided inside the clamping plate.

[0013] Furthermore, the conveying assembly includes a fixed shell fixedly connected to the outer walls on both sides of the box body, the inner walls on both sides of the fixed shell are rotatably connected to transmission rollers, the circumferential outer walls of the transmission rollers are transmission-connected to a conveyor belt, and the outer wall of the conveyor belt is provided with a positioning clamp for fixing the copper-clad board body.

[0014] Furthermore, a support frame is fixedly connected to the bottom outer wall 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 bottom outer wall of the box body, a drain pipe is fixedly connected to one side of the waste liquid tank, and both sides of the box body are provided with loading troughs for convenient feeding of copper clad boards.

[0015] Furthermore, the lifting assembly includes a worm wheel fixedly connected to the circumferential outer wall of the second threaded screw, the worm wheel meshing with a worm, both ends of the worm are fixedly connected to a rotating shaft, the circumferential outer wall of one rotating shaft is fixedly connected to a gear ring, a cross plate is fixedly connected to the inner wall of one side of the box body, and the other rotating shaft is rotatably connected to the cross plate, the circumferential outer wall of the gear ring is fixedly connected to a gear plate, the cross-section of the gear plate is semicircular, a second gear is provided on one side of the gear ring, the circumferential inner wall of the second gear is fixedly connected to a third threaded screw, the circumferential outer wall of the second liquid guide tube is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to a reinforcing plate, the middle part of the reinforcing plate is fixedly connected to a second threaded sleeve, and the second threaded sleeve is threadedly connected to the third threaded screw.

[0016] Furthermore, a third guide cylinder is fixedly connected to the middle part of another reinforcing plate, a third guide column is inserted into the circumferential outer wall of the third guide cylinder, the interior of the box is fixedly connected to the first fixed plate, and both ends of the third guide column are respectively fixedly connected to the top inner wall of the box and the top outer wall of the first fixed plate.

[0017] Further, the lifting assembly includes a first gear arranged on the other side of the gear ring, the first gear and the second gear are both meshed with the gear plate, the diameter of the first gear is larger than the diameter of the second gear, the circumferential inner wall of the first gear is fixedly connected with a first threaded screw, the circumferential outer wall of the first threaded screw is threadedly connected with a third threaded sleeve, the circumferential outer wall of the third threaded sleeve is fixedly connected with a U-shaped plate, one side outer wall of the U-shaped plate is fixedly connected with a top plate, the end of the top plate away from the U-shaped plate is fixedly connected with a bottom plate, the top of the bottom plate is located directly above the copper-clad board body, and arc grooves for facilitating the discharge of etching liquid are provided on both sides of the bottom plate, the top outer wall of the first fixed plate is fixedly connected with a first guide column, the circumferential outer wall of the first guide column is slidably connected with a second guide cylinder, and the second guide cylinder is fixedly connected to another U-shaped plate.

[0018] Furthermore, the clamping assembly includes a spring fixedly connected to the top inner wall of the clamping plate, the bottom end of the spring is fixedly connected to a pressure plate, the pressure plate is in contact with the top outer wall of the copper-clad board body, a slide groove is provided on one side outer wall of the clamping plate, a slider is slidably connected inside the slide groove, the slider is fixedly connected to the pressure plate, the other end of the slider is fixedly connected to a slide plate, and the slide plate is slidably connected to one side outer wall of the clamping plate.

[0019] Furthermore, a guide plate is fixedly connected to the inner wall of one side of the clamping plate, and the guide plates are equidistantly distributed on the inner wall of the clamping plate. The guide plate includes an inclined plate and an arc plate, and one end of the arc plate close to the copper-clad board body is provided with equidistantly distributed diversion grooves.

[0020] A high-precision etching method for copper-clad laminate manufacturing is applied to a high-precision etching device for copper-clad laminate manufacturing, and the method comprises the following steps:

[0021] S1: Place the copper-clad laminates to be etched one by one in the positioning clamps on the outer wall of the conveyor belt, start the conveyor belt, and smoothly convey the copper-clad laminates to the designated etching area in the box, and then stop the conveyor belt;

[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 plate to move in opposite directions, and fixes the copper-clad board body side clamp. At the same time, the worm wheel rotates with the second threaded screw, and the worm drives the gear ring and the gear plate to rotate, so that the second gear drives the third threaded screw to rotate, and drives the spray assembly to descend to a suitable position on one side of the copper-clad board body;

[0023] S3: Open the etching liquid supply valve, the etching liquid passes through the liquid inlet pipe, the bellows, the first liquid guide pipe, the second liquid guide pipe in sequence, and is sprayed out from the nozzle of the nozzle to etch the copper-clad board. During the etching process, the gear ring rotates continuously. In the second half of the circle, the first gear is meshed with the gear plate, driving the first threaded screw to rotate, so that the third threaded sleeve drives the U-shaped plate, the top plate and the bottom plate to rise, and the copper-clad board is ejected from the positioning clamp. At the same time, the pressure plate is lifted by the copper-clad board to compress the spring;

[0024] S4: After etching is completed, the etching liquid supply valve is closed. The first motor reverses to make the clamping plate release the copper-clad board body, and the gear ring reverses to drive the spray assembly to rise and reset, and the lifting assembly to fall and reset, and the etched copper-clad board body is removed from the conveyor belt, completing an etching process.

[0025] Beneficial effects of the present invention:

[0026] The high-precision etching device and etching method for copper-clad laminate manufacturing provided by the present invention, after starting the first motor, its output end drives the second threaded screw to rotate, because the first threaded sleeve and the second threaded screw are threadedly connected, when the screw rotates, the first threaded sleeve will move along the screw axial direction 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 an L-shaped clamping plate, so the movement of the first threaded sleeve will drive the clamping plate to move in opposite directions, and at the same time, the first guide cylinder slides on the second guide column, and this structural design ensures the stability of the movement of the clamping plate, and the copper-clad laminate body can be firmly clamped by the side through the opposite movement of the clamping plates on both sides. The advantage of this side clamping fixing method is that during the etching process of the copper-clad laminate, it can remain stable even if it is impacted by the etching liquid, and the side clamp only acts on the side of the copper-clad laminate body, and will not cause shielding on its front and back sides, effectively avoiding etching dead angles, thereby improving etching accuracy, and the clamping of the side can also prevent the occurrence of side etching.

[0027] The present invention provides a high-precision etching device and etching method for copper-clad laminate manufacturing. When the clamping plate moves in the horizontal direction to clamp the copper-clad laminate body, the worm wheel fixedly connected to the second threaded screw will rotate together. Since the worm wheel and the worm are meshed with each other, the rotation of the worm wheel will drive the worm to rotate. The two ends of the worm are respectively connected to the rotating shaft, one of which is fixed to the gear ring, and the other is rotatably connected to the cross plate. Therefore, when the worm rotates, the gear ring and the gear plate are driven to rotate together through the rotating shaft. In the initial stage of the rotation of the gear ring, it is meshed with the second gear. At this time, the first half circle of the rotation of the gear ring will drive the second gear to rotate together, while the first gear remains stationary. When the second gear rotates, the third threaded screw fixed on its inner wall rotates accordingly. Since the second threaded sleeve is threadedly connected to the third threaded screw, the rotation of the third threaded screw will cause the second threaded sleeve to move vertically, thereby driving the spray assembly to move downward until the spray assembly moves to one side of the two groups of copper-clad laminate bodies. When the gear ring continues to rotate for the second half circle, the second gear no longer rotates, and the first gear and the gear plate mesh with each other and start to rotate. The rotation of the first gear drives the first threaded screw fixed on its circumferential inner wall to rotate, and the third threaded sleeve rises vertically under the action of the thread of the first threaded screw. The third threaded sleeve drives the U-shaped plate, the top plate and the bottom plate to rise together, and the upward lifting force of the bottom plate pushes the copper-clad board body out of the positioning clamp. In this process, the copper-clad board body pushes the pressure plate upward, compressing the spring on the top of the pressure plate, preparing for the reset of the copper-clad board body after etching is completed. The whole process not only realizes the clamping protection of the four side plates of the copper-clad board body to avoid side corrosion, but also realizes the automatic adjustment of the device through the ingenious mechanical structure design, improving the automation and convenience of etching work.

[0028] The high-precision etching device and etching method for copper-clad laminate manufacturing provided by the present invention, when the copper-clad laminate body is ejected and fixed, the etching liquid flows in through the liquid inlet pipe, passes through the bellows, the first liquid guide pipe, the second liquid guide pipe in turn, and finally sprays out from the nozzles distributed in an arc shape at equal distances on both sides of the nozzle, and the sprayed etching liquid will continue to act on one side of the two groups of copper-clad laminates, thereby realizing the simultaneous etching of the double sides of multiple groups of copper-clad laminates. During the etching process, after the etching liquid sprayed from the nozzle fully contacts the etching area on the surface of the copper-clad laminate body, it flows down rapidly due to gravity, which enables fresh etching liquid to be replenished to the etching part in time, speeding up the etching reaction speed, and the shorter etching time reduces the residence time of the board in the etching liquid, thereby effectively reducing the degree of side etching, and in addition, when the etching liquid sprayed from the nozzle flows from top to bottom on the surface of the copper-clad laminate body, it will encounter the guide plate. The guide plate is composed of an inclined plate and an arc plate. The etching liquid is blocked by the inclined plate and the arc plate, which changes the flow direction, thereby expanding the contact area and time between the etching liquid and the bottom of the copper-clad board body, so that the area not directly impacted by the nozzle can still be fully etched. At the same time, the multi-component flow trough opened at one end of the arc plate close to the copper-clad board body can evenly disperse the etching liquid, so that it flows more evenly over the surface of the copper-clad board body, ensuring the uniformity of the entire etching process and further improving the etching accuracy of the copper-clad board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0031] Figure 2 It is a schematic diagram of the overall half-section structure of the present invention.

[0032] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

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

[0034] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0035] Figure 6 It is an enlarged structural schematic 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 Schematic diagram of the enlarged structure at point C in the middle.

[0037] Figure 8 It is a schematic diagram of the overall end surface structure of the present invention.

[0038] Fig. 9 It is a structural schematic diagram of the second embodiment of 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. Liquid discharge pipe; 7. Support frame; 8. Conveyor belt; 9. Positioning clamp; 10. Transmission roller; 11. Fixed shell; 12. First fixed plate; 13. Copper clad plate; 14. Spring; 15. Press plate; 16. Clamping plate; 17. Bottom plate; 18. Arc groove; 19. Spray pipe; 20. Spray head; 21. First liquid guide pipe; 22. Bellows; 23. Second liquid guide pipe; 24. First gear; 25. First threaded screw rod; 26. Gear ring; 27. Gear plate; 28. Second gear; 29. The first guide column; 30, worm wheel; 31, second threaded screw; 32, cross plate; 33, worm; 34, second guide column; 35, first guide cylinder; 36, first threaded sleeve; 37, fixed rod; 38, fixed block; 39, U-shaped plate; 40, second guide cylinder; 41, slide groove; 42, slide plate; 43, reinforcement frame; 44, third guide column; 45, third guide cylinder; 46, guide plate; 4601, inclined plate; 4602, arc plate; 4603, diversion groove; 47, second threaded sleeve; 48, third threaded sleeve; 49, third threaded screw; 50, top plate. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0042] Embodiment 1

[0043] See also Figure 1-Figure 8 A high-precision etching device for copper-clad laminate manufacturing includes a box body 1, a top outer wall of the box body 1 is fixedly connected with a liquid inlet pipe 3 for conveying etching liquid, and a spray assembly for etching the copper-clad laminate body 13 is arranged inside the box body 1;

[0044] The spray assembly includes a bellows 22 fixedly connected to one end of the liquid inlet pipe 3 located inside the box body 1, one end of the bellows 22 is fixedly connected to the first liquid guide pipe 21, both ends of the first liquid guide pipe 21 are fixedly connected to the second liquid guide pipe 23, both ends of the second liquid guide pipe 23 are plugged with a nozzle 19, and the circumferential outer wall of the nozzle 19 is provided with nozzles 20 distributed in an arc shape at equal distances, and the nozzle 20 is located on one side of the copper clad plate body 13;

[0045] The box body 1 is provided with a clamping assembly for ensuring the stability of the copper-clad board body 13 during the spraying process;

[0046] A lifting assembly is provided inside the box body 1, and the lifting assembly lifts the copper-clad plate body 13 through the horizontal movement of the clamping assembly;

[0047] The box body 1 is provided with a conveying assembly for continuously etching the copper-clad board body 13;

[0048] A lifting assembly is provided inside the box body 1. The lifting assembly drives the spray assembly to move vertically through the horizontal movement of the clamping assembly. The liquid inlet pipe 3 introduces the etching liquid into the box body 1. The flexible connection of the bellows 22 can avoid pipe damage when the spray assembly moves. The etching liquid flows through the first liquid guide pipe 21 and the second liquid guide pipe 23 in sequence, and finally sprays out from the nozzles 20 distributed in an arc shape at equal distances on the outer wall of the circumference of the nozzle 19. This structural design enables the nozzle 20 to spray and etch the copper clad board body 13 from a specific side, avoiding the side corrosion problem caused by the etching liquid contacting the copper clad board in all directions. At the same time, the etching area can be accurately controlled according to the distribution of the nozzles 20 to improve 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 to the second threaded screw 31, the circumferential outer wall of the second threaded screw 31 is threadedly connected to the first threaded sleeve 36, the bottom of the first threaded sleeve 36 is fixedly connected to the fixing rod 37, the output end of the fixing rod 37 is fixedly connected to the clamping plate 16, the cross section of the clamping plate 16 is L-shaped, the inner walls of both sides of the box body 1 are fixedly connected to the second guide columns 34, the circumferential outer wall of the second guide columns 34 is slidably connected to the first guide cylinder 35, the first guide cylinder 35 is fixedly connected to the first threaded sleeve 36, and one side of the clamping plate 16 is fixedly connected A reinforcing frame 43 is connected, and the clamping plate 16 is fixedly connected to another clamping plate 16 through the reinforcing frame 43. A clamping assembly for cooperating with the lifting assembly to fix the copper-clad board body 13 is arranged inside the clamping plate 16. After the first motor 4 is started, its output end drives the second threaded screw 31 to rotate. Based on the principle of thread transmission, the first threaded sleeve 36 moves on the screw, thereby driving the fixing rod 37 and the L-shaped clamping plate 16 connected thereto to move. The cooperation between the second guide column 34 and the first guide cylinder 35 ensures the stability and linearity of the movement of the clamping plate 16. The reinforcing frame 43 connects the two clamping plates 16 to enhance the overall clamping stability. The side clamping method of the clamping plate 16 can not only effectively fix the copper-clad board body 13 to prevent it from shaking due to the impact of the etching liquid during the etching process, but also protect the side of the copper-clad board body 13 to avoid the occurrence of side etching. At the same time, it will not block the front and back sides of the copper-clad board body 13, eliminating the etching dead angle and improving the etching accuracy.

[0050] Preferably, the conveying assembly includes a fixed shell 11 fixedly connected to the outer walls on both sides of the box body 1, and the inner walls on both sides of the fixed shell 11 are rotatably connected to the transmission rollers 10, and the circumferential outer walls of the transmission rollers 10 are transmission-connected to the conveyor belt 8, and the outer wall of the conveyor belt 8 is provided with a positioning clamp 9 for fixing the copper-clad board 13. The fixed shell 11 is installed on the outer walls on both sides of the box body 1, and the transmission rollers 10 inside it rotate to drive the conveyor belt 8 to operate. The positioning clamp 9 on the outer wall of the conveyor belt 8 can fix the copper-clad board 13, thereby realizing the continuous transportation of the copper-clad board 13, facilitating the copper-clad board 13 to be etched to be sequentially sent into the box body 1 for etching treatment, thereby improving the efficiency and continuity of the etching work and meeting the demand for production capacity 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, and a drain pipe 6 is fixedly connected to one side of the waste liquid tank 5. Both sides of the box body 1 are provided with loading troughs for convenient feeding of the copper clad board 13. The waste liquid tank 5 is used to collect waste liquid generated during the etching process. The waste liquid can be discharged through the drain pipe 6 for subsequent treatment to avoid waste liquid polluting the environment.

[0052] Preferably, the lifting assembly includes a worm wheel 30 fixedly connected to the circumferential outer wall of the second threaded screw 31, the worm wheel 30 is meshed 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, a side inner wall of the box body 1 is fixedly connected to a transverse plate 32, and 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, the cross section of the gear plate 27 is semicircular, a second gear 28 is provided on one side of the gear ring 26, the circumferential inner wall of the second gear 28 is fixedly connected to a third threaded screw 49, and the circumferential outer wall of the second liquid guide tube 23 is fixedly connected to the gear plate 27. A fixed block 38 is fixedly connected, a reinforcing plate is fixedly connected to one side of the fixed block 38, and 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 screw 49. When the second threaded screw 31 rotates, the worm wheel 30 is driven to rotate, and the worm wheel 30 is meshed 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 early stage of the rotation of the gear ring 26, it is meshed with the second gear 28, and the second gear 28 drives the third threaded screw 49 to rotate. Through the threaded connection between the second threaded sleeve 47 and the third threaded screw 49, the vertical descent of the spray assembly is realized. When the gear ring 26 rotates the second half of the circle, the first gear 24 is meshed with the gear plate 27 to realize the subsequent action of the jacking assembly, so that the rotation of the second threaded screw 31 in the clamping assembly can be used to realize the automatic lifting of the spray assembly, so that it can accurately move to the appropriate position to etch the copper-clad plate body 13, thereby improving the automation and working accuracy of the device.

[0053] Preferably, a third guide cylinder 45 is fixedly connected to the middle part of another reinforcing plate, and a third guide column 44 is inserted into the circumferential outer wall of the third guide cylinder 45. The first fixed plate 12 is fixedly connected to the inside of the box body 1, 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 fixed plate 12. The third guide cylinder 45 cooperates with the third guide column 44 to guide and stabilize the spray assembly during its lifting process. When the second threaded sleeve 47 moves vertically driven by the third threaded screw 49, the third guide cylinder 45 slides along the third guide column 44, ensuring the stability of the spray assembly lifting process and preventing it from deflecting or shaking during the movement, thereby ensuring that the nozzle 20 can accurately spray and etch the copper clad board 13, thereby improving the uniformity and accuracy of etching.

[0054] Preferably, the lifting assembly includes 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, the circumferential inner wall of the first gear 24 is fixedly connected with the first threaded screw 25, the circumferential outer wall of the first threaded screw 25 is threadedly connected with the third threaded sleeve 48, the circumferential outer wall of the third threaded sleeve 48 is fixedly connected with the U-shaped plate 39, the outer wall of one side of the U-shaped plate 39 is fixedly connected with the top plate 50, the end of the top plate 50 away from the U-shaped plate 39 is fixedly connected with the bottom plate 17, the top of the bottom plate 17 is located directly above the copper-clad board body 13, and arc grooves 18 are provided on both sides of the bottom plate 17 for facilitating the discharge of etching liquid, the top outer wall of the first fixed plate 12 is fixedly connected with the first guide column 29, and the first guide The circumferential outer wall of the column 29 is slidably connected with a second guide cylinder 40, and the second guide cylinder 40 is fixedly connected to another U-shaped plate 39. When the gear ring 26 rotates the second half circle, the first gear 24 meshes and rotates with the gear plate 27, driving the first threaded screw 25 to rotate. The third threaded sleeve 48 rises vertically under the action of the first threaded screw 25, thereby driving the U-shaped plate 39, the top plate 50 and the bottom plate 17 to rise, and the copper-clad board body 13 is ejected from the positioning clamp 9. The arc grooves 18 on both sides of the bottom plate 17 facilitate the discharge of the etching liquid to avoid the accumulation of the etching liquid affecting the etching effect. The cooperation between the first guide column 29 and the second guide cylinder 40 ensures the stability of the lifting assembly rising process, so that the copper-clad board body 13 can be accurately lifted 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 clamping assembly includes a spring 14 fixedly connected to the inner wall at the top of the clamping plate 16, and the bottom end of the spring 14 is fixedly connected to a pressing plate 15, and the pressing plate 15 contacts the top outer wall of the copper-clad board body 13. A sliding groove 41 is provided on the outer wall of one side of the clamping plate 16, and a slider is slidably connected inside the sliding groove 41, and the slider is fixedly connected to the pressing plate 15, and the other end of the slider is fixedly connected to a slide plate 42, and the slide plate 42 is slidably connected to the outer wall of one side of the clamping plate 16. When the copper-clad board body 13 is lifted by the lifting assembly, the pressing plate 15 will be pushed upward to compress the spring 14. The elastic force of the spring 14 can apply downward pressure to the copper-clad board body 13, further fixing the copper-clad board body 13 to prevent it from jumping or shifting during the etching process. The structural design of the sliding groove 41, the slider and the slide plate 42 enables the pressing plate 15 to remain stable during the up and down movement, ensuring that the clamping assembly can effectively cooperate with the lifting assembly to stably fix the copper-clad board body 13, thereby improving the stability and accuracy of the etching process.

[0056] Embodiment 2

[0057] See also Fig. 9, a high-precision etching device for copper-clad laminate manufacturing, compared with the first embodiment, the present embodiment further includes a guide plate 46 fixedly connected to the inner wall of one side of the clamping plate 16, the guide plate 46 is equidistantly distributed on the inner wall of the clamping plate 16, the guide plate 46 includes an inclined plate 4601 and an arc plate 4602, and the arc plate 4602 is provided with a diversion groove 4603 distributed equidistantly at one end thereof close to the copper-clad laminate body 13, the guide plate 46 on the inner wall of one side of the clamping plate 16 is composed of an inclined plate 4601 and an arc plate 4602, and the arc plate 4602 is close to the copper-clad laminate body 1 A diverter groove 4603 is provided at one end. When the etching liquid sprayed from the nozzle 20 flows on the surface of the copper-clad board 13, it encounters the guide plate 46. The inclined plate 4601 and the arc plate 4602 will change the flow direction of the etching liquid, expand the contact area and time between the etching liquid and the bottom of the copper-clad board 13, so that the area not directly impacted by the nozzle 20 can also be fully etched. The diverter groove 4603 evenly disperses the etching liquid, so that the etching liquid flows more evenly on the surface of the copper-clad board 13, ensuring the uniformity of the entire etching process and further improving the etching accuracy.

[0058] A high-precision etching method for copper-clad laminate manufacturing is applied to a high-precision etching device for copper-clad laminate manufacturing, and the method comprises the following steps:

[0059] Step 1: Place 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, start the conveyor belt 8, and smoothly convey the copper-clad boards 13 to the designated etching area in the box 1, and then stop the conveyor belt 8;

[0060] Step 2: 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 toward each other, and the copper-clad board body 13 is clamped and fixed. At the same time, the worm wheel 30 rotates with the second threaded screw 31, and the gear ring 26 and the gear plate 27 are driven 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 board body 13;

[0061] Step 3: Open the etching liquid supply valve, 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 body 13. During the etching process, the gear ring 26 rotates continuously. In the second half of the circle, the first gear 24 is meshed 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 body 13 is ejected from the positioning clamp 9. At the same time, the pressing plate 15 is lifted by the copper-clad board body 13 to compress the spring 14;

[0062] Step 4: After etching is completed, close the etching liquid supply valve. The first motor 4 reverses to make the clamping plate 16 release the copper-clad board 13, and the gear ring 26 reverses to drive 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.

[0063] In summary, with the aid of the above technical solution of the present invention, when in use, the staff first inserts the copper-clad board bodies 13 to be etched into the positioning clamps 9 on the top of the conveyor belt 8 one by one, and uses the positioning clamps 9 to ensure the stability of the copper-clad board bodies 13 during the conveying process, and then conveys the copper-clad board bodies 13 to the inside of the box body 1 through the conveyor belt 8. When the copper-clad board moves to the designated area, the conveyor belt 8 stops working, and then the first motor 4 is started and the external liquid supply (etching liquid) valve is opened. The first motor 4 can drive the second threaded screw 31 to rotate and rotate together with the worm gear 30, and the second threaded screw 31 is driven by the second motor 4 to rotate. During the rotation of the rod 31, the two groups of first threaded sleeves 36 threadedly connected to the outer wall thereof can drive the two groups of clamping plates 16 to move toward each other. At this time, the two groups of clamping plates 16 can effectively clamp the copper-clad board body 13 on the side, ensuring that the copper-clad board body 13 can remain stable when subjected to etching impact during the subsequent etching process. The copper-clad board side clamping fixing method can not only protect its side surface to avoid side etching, but also will not block the front and back sides of the copper-clad board body 13, and will not cause the problem of etching dead angles, thereby improving the etching accuracy of the copper-clad board body 13.

[0064] In the process of the clamping plate 16 moving horizontally to clamp the copper-clad board body 13, the worm 33 is driven to rotate by the worm wheel 30, so that the worm 33 drives the gear ring 26 and the gear plate 27 to rotate together through the rotating shaft. When the rotating shaft rotates initially, the gear ring 26 is meshed with the second gear 28. Therefore, in the first half circle 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 screw 49 fixed on its inner wall to rotate. The rotation of the third threaded screw 49 can make the second threaded sleeve 47 threadedly connected to its outer wall move vertically together, so that the spray assembly located above the box body 1 can be driven downward until the gear ring 26 rotates half a circle. At this time, the spray assembly moves downward to one side of the two groups of copper-clad board bodies 13;

[0065] When the gear ring 26 continues to rotate with the worm 33, the second gear 28 remains stationary while the first gear 24 meshes with the gear plate 27 to rotate. The rotation of the first gear 24 can drive the first threaded screw 25 to rotate. During the rotation of the first threaded screw 25, the third threaded sleeve 48 threadedly connected to the outer wall thereof can be made to 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 lifting force of the rise to The bottom of the copper-clad board body 13 can be pushed out of the positioning clamp 9 to prevent the positioning clamp 9 from affecting the etching work of the copper-clad board body 13. At the same time, when the copper-clad board body 13 is pushed out of the positioning clamp 9, an upward thrust is applied to the pressing plate 15, so that the spring 14 on the top of the pressing plate 15 is in a compressed state, thereby facilitating the reset work of the copper-clad board body 13 after the subsequent etching is completed. During the entire clamping and positioning process, the four side plates of the copper-clad board body 13 can be clamped and protected to prevent the copper-clad board from side etching;

[0066] When the copper-clad board body 13 is ejected and fixed, the etching liquid enters the liquid inlet pipe 3, and is transmitted through a series of pipelines and finally sprayed out from the nozzles 20 on both sides of the nozzle 19. The sprayed etching liquid will repeatedly act on one side of the two groups of copper-clad boards, thereby realizing the simultaneous etching of the double sides of multiple groups of copper-clad boards. When the etching liquid is continuously sprayed out from the nozzles 20, it fully contacts the etching area on the surface of the copper-clad board body 13 and then flows down quickly, so that fresh etching liquid can be replenished to the etching part in time, which speeds up the etching reaction speed and reduces the residence time of the board in the etching liquid, thereby reducing the degree of side etching. In addition, during the entire spraying process, the situation where the local etching liquid concentration is too high or too low is avoided, thereby improving the etching accuracy of the copper-clad board body 13;

[0067] At the same time, when the etching liquid sprayed from the nozzle 20 flows from top to bottom on the surface of the copper-clad board 13, it will be blocked by the inclined plate 4601 and the curved plate 4602, thereby expanding the contact area and time of the etching liquid under the copper-clad board 13, so that the area not impacted by the nozzle 20 can still be fully etched, and the multi-component flow groove 4603 opened on one side of the curved plate 4602 can make the etching liquid flow more evenly over the surface of the copper-clad board 13, making the entire etching process more uniform.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should 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); A clamping assembly for ensuring the stability of the copper-clad board body (13) during the spraying process is arranged inside the box body (1); A lifting assembly is arranged inside the box (1), and the lifting assembly lifts up the copper-clad plate body (13) through horizontal movement of the clamping assembly; A conveying assembly for continuously etching the copper-clad board 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.

2. The high-precision etching device for copper-clad laminate manufacturing according to claim 1, characterized in that: The clamping assembly comprises a first motor (4) fixedly connected to an outer wall of one side of the box body (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); a clamping plate (16) is fixedly connected to the output end of the fixing rod (37); the cross section of the clamping plate (16) is L-shaped; and the inner walls on both sides of the box body (1) are fixedly connected. A second guide column (34) is fixedly connected to the clamping plate (16); a first guide cylinder (35) is slidably connected to the circumferential outer wall of the second guide column (34); the first guide cylinder (35) is fixedly connected to 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 clamping assembly for cooperating with a lifting assembly to fix the copper-clad plate body (13) is provided inside the clamping plate (16).

3. The high-precision etching device for copper-clad laminate manufacturing according to claim 2, 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).

4. The high-precision etching device for copper-clad laminate manufacturing according to claim 3, 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).

5. The high-precision etching device for copper-clad laminate manufacturing according to claim 4, 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).

6. The high-precision etching device for copper-clad laminate manufacturing according to claim 5, characterized in that: A third guide cylinder (45) is fixedly connected to the middle of the other 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 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).

7. The high-precision etching device for copper-clad laminate manufacturing according to claim 6, 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). A top plate (50) is fixedly connected to an outer wall of one side of the U-shaped plate (9); 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); 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 an outer wall of the top 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).

8. The high-precision etching device for copper-clad laminate manufacturing according to claim 7, characterized in that: The clamping assembly comprises 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 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 the outer wall of one side of the clamping plate (16).

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

10. 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 9, characterized in that: The method comprises the following steps: S1: placing 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), starting the conveyor belt (8), and smoothly conveying the copper-clad laminate bodies (13) to the designated etching area in the box body (1), and then stopping the conveyor belt (8); S2: Turning 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, thereby clamping the copper-clad plate body (13) sideways and fixing it; at the same time, the worm wheel (30) rotates along 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, thereby driving the spray assembly to descend to a suitable position on one side of the copper-clad plate body (13); S3: opening the etching liquid supply valve, 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 body (13). During the etching process, the gear ring (26) rotates continuously, and in the second half of a circle, 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 body (13) is ejected from the positioning clamp (9). At the same time, the pressing plate (15) is lifted by the copper-clad board body (13) to compress the spring (14); S4: After the 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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