Circuit board double-sided etching device and etching method

Abstract

The invention provides a circuit board double-side etching device which comprises a machine shell, a sweeping assembly is arranged in the machine shell, and the sweeping assembly comprises a sweeping plate, a spraying hole, four guide rods, a supporting plate and a sweeping motor; and the spraying holes are uniformly formed in the upper surface of the cleaning plate. A lifting base is pushed upwards through a lifting air cylinder, the lifting base drives a sweeping plate to move upwards, so that the sweeping plate makes contact with a circuit board, a sweeping motor drives a transmission shaft, the transmission shaft drives an incomplete gear to rotate, the incomplete gear drives a gear ring through teeth, the gear ring drives a mounting box, and the mounting box drives the sweeping plate through a supporting plate; compared with the prior art, the circuit board cleaning device has the advantages that the cleaning plate completely covers the lower surface of a circuit board during reciprocating movement, so that colloidal hardened materials of the circuit board are completely cleaned, cleaning blind areas are avoided, and the cleaning effect is improved.

Description

Technical Field

[0001] The invention relates to an etching device and an etching method, in particular to a circuit board double-sided etching device and an etching method, belonging to the technical field of circuit board etching. Background Art

[0002] Circuit board etching is an important step in the manufacturing process of printed circuit boards (PCBs). Circuit board etching refers to the process of removing the copper foil outside the conductive circuit by chemical or physical methods. In PCB manufacturing, chemical etching is usually used, that is, using a specific etching solution to react chemically with the copper foil to remove the unnecessary copper foil part.

[0003] The known Chinese public authorized invention (publication number: CN115767930B) discloses a circuit board double-sided etching device and etching method thereof, which is provided with a cleaning mechanism. When working, the cleaning mechanism first moves upward for a distance and then contacts the bottom surface of the circuit board. At the same time, the cleaning mechanism rotates to clean the bottom of the circuit board. During this period, the cleaning mechanism also moves back and forth left and right, so that the cleaning mechanism cleans different parts of the circuit board, which is conducive to comprehensive cleaning of the gelatinous plate aggregates at the bottom of the circuit board.

[0004] The cleaning mechanism is composed of a plurality of cleaning discs, cleaning blocks, bristles and other components, and then driven by a motor, the cleaning of the colloid-like aggregates at the bottom of the circuit board is realized. However, the cleaning assembly is composed of a plurality of cleaning discs, which will produce a blind area during cleaning, thereby affecting the cleaning effect of the colloid-like aggregates at the bottom of the circuit board.

[0005] The clamping mechanism design of the existing circuit board double-sided etching device is not flexible enough and cannot be easily adjusted to adapt to circuit boards of different thicknesses. When the thickness of the circuit board does not match the setting of the clamping mechanism, unstable clamping will occur, causing the circuit board to move or deform during the etching process, affecting the etching quality. In addition, the circuit board needs to be flipped during the double-sided etching process of the circuit board. The existing etching device usually cannot flip multiple circuit boards synchronously and needs to be processed one by one, which limits the production efficiency. Especially in mass production, processing one by one will lead to an extension of the production cycle and an increase in production costs. Therefore, a circuit board double-sided etching device and an etching method are proposed. Summary of the invention

[0006] In view of this, the present invention provides a circuit board double-sided etching device and etching method to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the present invention is implemented as follows: a circuit board double-sided etching device, comprising a housing, wherein a cleaning assembly is arranged inside the housing, wherein the cleaning assembly comprises a cleaning plate, a spray hole, four guide rods, a support plate, a mounting box, an incomplete gear, a gear ring, a transmission shaft, a slider, a support rod, a support spring, two lifting seats and a cleaning motor;

[0008] The spray holes are evenly arranged on the upper surface of the cleaning plate, and the four guide rods are symmetrically fixedly connected to the lower surface of the cleaning plate, the guide rod is slidably connected to the inside of the support plate, and the support spring is sleeved on the outer wall of the guide rod, and mounting grooves are symmetrically arranged on both sides of the casing, and the two lifting seats are slidably connected to the insides of the two mounting grooves, the mounting box is fixedly connected to the lower surface of the support plate, the incomplete gear is fixedly connected to the outer wall of the transmission shaft, the gear ring is fixedly connected to the inner bottom wall of the mounting box, the slider is fixedly connected to the mounting box through the support rod, the transmission shaft is fixedly connected to the motor shaft of the cleaning motor, the outer wall of the incomplete gear is meshed and connected to the inner side wall of the gear ring, the inner top wall and the inner bottom wall of the gear ring are both provided with teeth, the transmission shaft is rotatably connected to the inside of the two lifting seats, and the cleaning motor is installed on one side of the lifting seat.

[0009] Further preferably, the top end of the support spring presses against the lower surface of the cleaning plate, the bottom end of the support spring presses against the upper surface of the support plate, the inner wall of the lifting seat is symmetrically provided with sliding grooves, and the slider is slidably connected to the inner wall of the sliding groove.

[0010] Further preferably, the inner wall of the slide groove is fixedly connected to a positioning rod, the slider is slidably connected to the outer wall of the positioning rod, the outer wall of the positioning rod is sleeved with two return springs, one end of the return spring supports the lifting seat, and the other end of the return spring supports the slider, avoidance grooves are opened on both sides of the installation box, and the transmission shaft is located inside the avoidance grooves.

[0011] Further preferably, the inner side wall of the mounting groove is fixedly connected to two limit rods, the lifting seat is slidably connected to the outer side walls of the two limit rods, two lifting cylinders are symmetrically installed on both sides of the casing, and the cylinder shafts of the lifting cylinders are fixedly connected to the lower surface of the lifting seat.

[0012] Further preferably, a spray plate is installed on the top of the inner wall of the casing, spray heads are evenly installed on the lower surface of the spray plate, the spray plate is located above the cleaning plate, a liquid storage tank is installed on the inner bottom wall of the casing, a filter plate is installed on the top of the inner wall of the liquid storage tank, two handles are symmetrically installed on the upper surface of the filter plate, and the cleaning plate and the spray plate are connected to the liquid storage tank through a delivery pump.

[0013] Further preferably, two clamping plates are rotatably connected to the inner wall of the casing, two flipping motors are symmetrically installed on both sides of the casing, the motor shafts of the flipping motors are fixedly connected to the clamping plates, and the clamping plates are located between the spray plate and the cleaning plate.

[0014] A circuit board double-sided etching device, comprising a clamping assembly, wherein the clamping assembly comprises a drive box, a motor, a first threaded rod, a slider, a rack, a gear, a bearing seat, a transmission shaft, a support plate, a second threaded rod, a pressure plate and a fixing rod;

[0015] The transmission gear is fixedly connected with one end of the transmission shaft, and the transmission gear is fixedly connected with one end of the transmission shaft through the transmission shaft, and the transmission shaft is symmetrically fixedly connected with a fixing rod. After the single-sided etching is completed, the first threaded rod is driven by the motor to rotate, so that the slider and the rack move, and the multiple gears are driven to rotate synchronously. The transmission shaft rotates with the gear to complete the flipping of the circuit board. Multiple circuit boards can be flipped synchronously during the etching process of the circuit board.

[0016] Further preferably, a connector is fixedly connected to the top end of the second threaded rod; and clamping blocks are symmetrically fixedly connected to the top of the fixing rod and the bottom of the pressure plate.

[0017] Further preferably: a main body component is arranged outside the clamping component, and the main body component includes a shell and supporting legs;

[0018] The bottom of the shell is symmetrically and fixedly connected with supporting legs; the inner side wall of the shell is detachably and fixedly connected with a filter screen.

[0019] Further preferably, a liquid storage tank is fixedly connected to the bottom of the shell; a filter is installed on the rear surface of the liquid storage tank, the rear surface of the filter is connected to an infusion tube, and an infusion pump is installed on the infusion tube.

[0020] Further preferably, a liquid separation plate is fixedly connected to the inner side wall of the shell, the liquid separation plate is communicated with one end of the infusion tube, and nozzles are evenly installed on the bottom of the liquid separation plate.

[0021] A double-sided etching method for a circuit board comprises the following steps:

[0022] Step 1: Install the circuit board to be etched between two clamping plates, and spray the etching liquid from the spray head to etch the upper surface of the circuit board;

[0023] Step 2: The flip motor drives the circuit board to flip and etch the other side of the circuit board;

[0024] Step 3: The lifting cylinder pushes the lifting seat upward, and the cleaning plate fits the circuit board to clean the colloid on the circuit board;

[0025] Step 4: The cleaning plate reciprocates and sprays out etching liquid at the same time, and etches again while cleaning the gelatinous plate aggregates;

[0026] Step 5: After cleaning, the flip motor drives the circuit board to flip and clean and etch the other side of the circuit board.

[0027] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0028] The present invention pushes the lifting seat upwards through the lifting cylinder, and the lifting seat drives the cleaning plate to move upwards so that the cleaning plate contacts the circuit board. Under the push of the supporting spring, the cleaning plate and the circuit board are closely fitted to improve the cleaning effect of the cleaning plate. The cleaning motor drives the transmission shaft, and the transmission shaft drives the incomplete gear to rotate. The incomplete gear drives the gear ring through the teeth, and the gear ring drives the installation box. The installation box drives the cleaning plate through the supporting plate, and the installation box slides along the positioning rod through the slider, so that the cleaning plate can be reciprocated. Compared with the prior art, the cleaning plate of the present invention fully covers the lower surface of the circuit board when reciprocating, thereby achieving comprehensive cleaning of the gelatinous plate materials on the circuit board, without the occurrence of cleaning blind spots, and improving the cleaning effect.

[0029] The present invention drives the first threaded rod to rotate through a motor, so that the slider and the rack move, and drives multiple gears to rotate synchronously. During the etching process of the circuit boards, multiple circuit boards can be turned over synchronously, thereby improving production efficiency, shortening production cycle, and reducing production cost.

[0030] The present invention rotates the connecting head by a wrench to drive the second threaded rod to rotate, and clamps the circuit board by a clamping block, which can meet the clamping requirements of circuit boards of different thicknesses, prevent the circuit boards from moving or deforming, and ensure etching quality.

[0031] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a structural diagram of a circuit board double-sided etching device of the present invention;

[0034] Figure 2 It is a structural diagram of the casing of the present invention;

[0035] Figure 3 It is a structural diagram of the cleaning assembly of the present invention;

[0036] Figure 4 This is a schematic diagram of the disassembly of the cleaning assembly of the present invention;

[0037] Figure 5 It is the structural diagram of the installation box of the present invention;

[0038] Figure 6 It is a structural diagram of the lifting seat of the present invention;

[0039] Figure 7 It is a schematic diagram of the connection between the incomplete gear and the gear ring of the present invention;

[0040] Figure 8 It is a schematic diagram of the connection between the filter plate and the liquid storage tank of the present invention;

[0041] Fig. 9 It is a structural diagram of the present invention;

[0042] Fig.10 It is a rear view structural diagram of the present invention;

[0043] Fig.11 This is a diagram showing the internal structure of the housing of the present invention;

[0044] Fig.12 It is the internal structure diagram of the drive box of the present invention;

[0045] Fig.13 This is a structural diagram of the support plate of the present invention;

[0046] Fig.14 It is a structural diagram of the pressing plate of the present invention.

[0047] Figure numerals: 10, cleaning assembly; 11, cleaning plate; 12, spray hole; 14, guide rod; 15, support plate; 16, installation box; 17, incomplete gear; 18, gear ring; 19, transmission shaft; 20, slider; 21, positioning rod; 22, return spring; 23, support rod; 24, support spring; 25, lifting cylinder; 26, lifting seat; 27, limit rod; 28, cleaning motor; 29, slide; 30, avoidance groove; 31, housing; 32, spray head; 33, spray plate; 34, clamping plate; 35, filter plate; 36, handle; 38, flip motor; 39, installation groove; 40, liquid storage tank;

[0048] 100. Main body assembly; 101. Shell; 102. Support leg; 103. Filter; 104. Liquid storage tank; 215. Filter; 216. Infusion tube; 217. Infusion pump; 218. Liquid separation plate; 219. Nozzle; 220. Clamping assembly; 221. Drive box; 222. Motor; 223. First threaded rod; 224. Slider; 225. Rack; 226. Gear; 227. Bearing seat; 228. Transmission shaft; 229. Support plate; 210. Second threaded rod; 211. Connector; 212. Press plate; 213. Fixing rod; 214. Clamp block. DETAILED DESCRIPTION

[0049] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0050] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] In the prior art, a cleaning mechanism composed of a plurality of cleaning discs, cleaning blocks, bristles and other components realizes the cleaning of the colloid-like aggregates at the bottom of the circuit board under the drive of a motor. However, the cleaning assembly is composed of a plurality of cleaning discs, which will produce a cleaning blind area during cleaning, thereby affecting the cleaning effect of the colloid-like aggregates at the bottom of the circuit board.

[0052] Embodiment 1:

[0053] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides a circuit board double-sided etching device, including a housing 31, a cleaning assembly 10 is arranged inside the housing 31, and the cleaning assembly 10 includes a cleaning plate 11, a spray hole 12, four guide rods 14, a support plate 15, a mounting box 16, an incomplete gear 17, a gear ring 18, a transmission shaft 19, a slider 20, a support rod 23, a support spring 24, two lifting seats 26 and a cleaning motor 28;

[0054] The spray holes 12 are evenly arranged on the upper surface of the cleaning plate 11, four guide rods 14 are symmetrically fixedly connected to the lower surface of the cleaning plate 11, the guide rods 14 are slidably connected to the inside of the support plate 15, the support springs 24 are sleeved on the outer side walls of the guide rods 14, the two sides of the housing 31 are symmetrically provided with mounting grooves 39, two lifting seats 26 are slidably connected to the inside of the two mounting grooves 39, the mounting box 16 is fixedly connected to the lower surface of the support plate 15, the incomplete gear 17 is fixedly connected to the outer side wall of the transmission shaft 19, the gear ring 18 is fixedly connected to the inner bottom wall of the mounting box 16, the slider 20 is fixedly connected to the mounting box 16 through the support rod 23, and the transmission shaft 19 is fixedly connected to the motor shaft of the cleaning motor 28;

[0055] The cleaning assembly 10 is used to clean the colloid deposits on the circuit board. The upper surface of the cleaning plate 11 is provided with acid and alkali resistant bristles. The cleaning plate 11 is a hollow plate-shaped structure, so the etching liquid inside the cleaning plate 11 can be sprayed out from the spray hole 12;

[0056] During the cleaning process, the bristles on the cleaning plate 11 contact the lower surface of the circuit board, and with the cooperation of the incomplete gear 17, the ring gear 18, the transmission shaft 19 and other structures, the cleaning plate 11 moves back and forth, so that the cleaning plate 11 can fully cover the lower surface of the circuit board, thereby achieving comprehensive cleaning of the gelatinous material on the circuit board, without any blind spots in cleaning, and improving the cleaning effect.

[0057] In one embodiment, the outer wall of the incomplete gear 17 is meshed and connected to the inner wall of the ring gear 18, and the inner top wall and the inner bottom wall of the ring gear 18 are both provided with teeth. The transmission shaft 19 is rotatably connected to the inside of the two lifting seats 26, and the cleaning motor 28 is installed on one side of the lifting seat 26. The transmission shaft 19 is driven by the cleaning motor 28, and the transmission shaft 19 drives the incomplete gear 17 to rotate. The incomplete gear 17 drives the ring gear 18 through its teeth. When the teeth of the incomplete gear 17 contact the teeth of the inner top wall of the ring gear 18, the ring gear 18 drives the installation box 16 to move backward. When the teeth of the incomplete gear 17 contact the teeth of the inner bottom wall of the ring gear 18, the ring gear 18 drives the installation box 16 to move forward. The installation box 16 drives the cleaning plate 11 through the support plate 15, so that the cleaning plate 11 can move back and forth, thereby realizing comprehensive cleaning of the gelatinous plate deposits on the circuit board.

[0058] In one embodiment, the top end of the support spring 24 presses against the lower surface of the cleaning plate 11, and the bottom end of the support spring 24 presses against the upper surface of the support plate 15. When the cleaning plate 11 contacts the circuit board upward, the support spring 24 pushes the cleaning plate 11 upward, so that the cleaning plate 11 can fit tightly against the circuit board to improve the cleaning effect of the cleaning plate 11.

[0059] In one embodiment, the inner wall of the lifting seat 26 is symmetrically provided with sliding grooves 29, and the slider 20 is slidably connected to the inner wall of the sliding groove 29. The inner wall of the sliding groove 29 is fixedly connected with a positioning rod 21, and the slider 20 is slidably connected to the outer wall of the positioning rod 21. The outer wall of the positioning rod 21 is sleeved with two return springs 22, one end of the return spring 22 supports the lifting seat 26, and the other end of the return spring 22 supports the slider 20. When the ring gear 18 drives the installation box 16 to reciprocate, the installation box 16 drives the slider 20 through the support rod 23, and the slider 20 slides along the positioning rod 21. The support rod 23 and the slider 20 can play a limiting role so that the installation box 16 can move horizontally, and the return spring 22 can play an auxiliary reset role.

[0060] In one embodiment, avoidance grooves 30 are provided on both sides of the installation box 16 , and the transmission shaft 19 is located inside the avoidance grooves 30 . The avoidance grooves 30 can avoid position conflicts between the transmission shaft 19 and the installation box 16 .

[0061] In one embodiment, two limit rods 27 are fixedly connected to the inner side wall of the installation groove 39, and the lifting seat 26 is slidably connected to the outer side walls of the two limit rods 27. Two lifting cylinders 25 are symmetrically installed on both sides of the housing 31, and the cylinder shafts of the lifting cylinders 25 are fixedly connected to the lower surface of the lifting seat 26. The lifting seat 26 is pushed upward by the lifting cylinder 25, and the lifting seat 26 drives the installation box 16 through the support rod 23, so that the cleaning plate 11 can be moved upward, so that the cleaning plate 11 contacts the lower surface of the circuit board;

[0062] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a circuit board double-sided etching device and solves the problems through the above technical solutions:

[0063] The lifting seat 26 is pushed upward by the lifting cylinder 25, and the lifting seat 26 drives the cleaning plate 11 to move upward, so that the cleaning plate 11 contacts the circuit board. Under the push of the support spring 24, the cleaning plate 11 is closely fitted with the circuit board to improve the cleaning effect of the cleaning plate 11. The transmission shaft 19 is driven by the cleaning motor 28, and the transmission shaft 19 drives the incomplete gear 17 to rotate. The incomplete gear 17 drives the gear ring 18 through the teeth. When the teeth of the incomplete gear 17 contact the teeth of the inner top wall of the gear ring 18, the gear ring 18 drives the installation box 16 to move backward. When the teeth of the incomplete gear 17 contact the teeth of the inner bottom wall of the ring gear 18, the ring gear 18 drives the installation box 16 to move forward. The installation box 16 drives the cleaning plate 11 through the support plate 15. The installation box 16 slides along the positioning rod 21 through the slider 20, so that the cleaning plate 11 can move back and forth. The cleaning plate 11 fully covers the lower surface of the circuit board when reciprocating, thereby achieving comprehensive cleaning of the gelatinous plate materials on the circuit board, without any blind cleaning area, and improving the cleaning effect.

[0064] In one embodiment, a spray plate 33 is installed on the top of the inner wall of the housing 31, and spray heads 32 are evenly installed on the lower surface of the spray plate 33. The spray plate 33 is located above the cleaning plate 11. A liquid storage tank 40 is installed on the inner bottom wall of the housing 31. A filter plate 35 is installed on the top of the inner wall of the liquid storage tank 40. Two handles 36 are symmetrically installed on the upper surface of the filter plate 35. The cleaning plate 11 and the spray plate 33 are both connected to the liquid storage tank 40 through a delivery pump, and then the etching liquid in the liquid storage tank 40 can be sprayed out from the spray head 32 and the spray hole 12 to achieve the etching operation of the circuit board;

[0065] The top of the liquid storage tank 40 is designed to be open, so that the etching liquid can be recovered, and impurities can be filtered through the filter plate 35 to ensure the cleanliness of the etching liquid.

[0066] In one embodiment, two clamps 34 are rotatably connected to the inner wall of the casing 31, and two flip motors 38 are symmetrically installed on both sides of the casing 31. The motor shaft of the flip motor 38 is fixedly connected to the clamp 34. The clamp 34 is located between the spray plate 33 and the cleaning plate 11. The clamp 34 is used to clamp and fix the circuit board. The flip motor 38 drives the clamp 34 to realize the flipping of the circuit board.

[0067] A double-sided etching method for a circuit board comprises the following steps:

[0068] Step 1: Install the circuit board to be etched between two clamping plates, and spray the etching liquid from the spray head to etch the upper surface of the circuit board;

[0069] Step 2: The flip motor drives the circuit board to flip and etch the other side of the circuit board;

[0070] Step 3: The lifting cylinder pushes the lifting seat upward, and the cleaning plate fits the circuit board to clean the colloid on the circuit board;

[0071] Step 4: The cleaning plate reciprocates and sprays out etching liquid at the same time, and etches again while cleaning the gelatinous plate aggregates;

[0072] Step 5: After cleaning, the flip motor drives the circuit board to flip and clean and etch the other side of the circuit board.

[0073] When the present invention is working, the circuit board to be etched is installed in the two clamping plates 34, and then the etching liquid is sprayed from the spray head 32. At this time, the upper surface of the circuit board is etched, and the circuit board is turned by the turning motor 38, so that the other side of the circuit board can be etched. At the same time, the lifting cylinder 25 pushes the lifting seat 26 upward, and the lifting seat 26 drives the cleaning plate 11 to move upward, so that the cleaning plate 11 contacts the circuit board. Under the push of the support spring 24, the cleaning plate 11 is closely attached to the circuit board, and the cleaning motor 28 drives the cleaning plate 11 to move upward. The transmission shaft 19 drives the incomplete gear 17 to rotate, the incomplete gear 17 drives the ring gear 18 through the teeth, the ring gear 18 drives the installation box 16, and the installation box 16 drives the cleaning plate 11 through the support plate 15, so that the cleaning plate 11 can move back and forth. When moving back and forth, the cleaning plate 11 fully covers the lower surface of the circuit board, thereby achieving comprehensive cleaning of the gelatinous board materials on the circuit board, avoiding the occurrence of cleaning blind areas, and improving the cleaning effect. At the same time, etching liquid is sprayed out of the spray hole 12, and the circuit board can be etched again.

[0074] Embodiment 2

[0075] like Figure 9-14 As shown, an embodiment of the present invention provides a circuit board double-sided etching device, including a clamping assembly 220, the clamping assembly 220 includes a drive box 221, a motor 222, a first threaded rod 223, a slider 224, a rack 225, a gear 226, a bearing seat 227, a transmission shaft 228, a support plate 229, a second threaded rod 210, a pressing plate 212 and a fixing rod 213;

[0076] The inner wall of the driving box 221 is installed with a motor 222, the output shaft of the motor 222 is fixedly connected to one end of the first threaded rod 223, the first threaded rod 223 is rotatably connected to the inner wall of the driving box 221, the outer wall of the first threaded rod 223 is threadedly connected with a slider 224, the top of the slider 224 is fixedly connected with a rack 225, the rack 225 is slidably connected to the inner wall of the driving box 221, the inner wall of the driving box 221 is evenly rotatably connected with a gear 226, the rack 225 is meshed with the gear 226, the front surface of the driving box 221 is fixedly connected with a bearing seat 227, the gear 226 is fixedly connected to one end of the transmission shaft 228, and the transmission shaft 2 28 is rotatably connected to the inside of the bearing seat 227, one end of the transmission shaft 228 is fixedly connected to the support plate 229, the inner wall of the support plate 229 is rotatably connected to the second threaded rod 210, the outer wall of the second threaded rod 210 is threadedly connected to the pressure plate 212, and the front surface of the support plate 229 is symmetrically fixedly connected to the fixing rod 213. After the single-sided etching is completed, the first threaded rod 223 is driven to rotate by the motor 222, so that the slider 224 and the rack 225 move, and drive multiple gears 226 to rotate synchronously, and the transmission shaft 228 rotates together with the gear 226 to complete the flipping of the circuit board. During the circuit board etching process, multiple circuit boards can be flipped synchronously.

[0077] In this embodiment, specifically: the top of the second threaded rod 210 is fixedly connected with a connecting head 211, and the connecting head 211 is rotated by a wrench to drive the second threaded rod 210 to rotate; the top of the fixed rod 213 and the bottom of the pressure plate 212 are symmetrically fixedly connected with a clamping block 214, and the clamping block 214 is used to clamp the circuit board. The clamping block 214 is made of elastic material to avoid crushing the circuit board. At the same time, the setting of the clamping block 214 can reduce the contact area between the clamping mechanism and the circuit board, so as to complete the etching work and prevent the etching area from being blocked.

[0078] In this embodiment, specifically: a main body assembly 100 is disposed outside the clamping assembly 220, and the main body assembly 100 includes a shell 101 and a support leg 102;

[0079] The bottom of the shell 101 is symmetrically fixedly connected with support legs 102, which play a role of stable support; the inner wall of the shell 101 is detachably fixedly connected with a filter screen 103, and the etching liquid is filtered by the filter screen 103 and then recycled into the liquid storage tank 104 for recycling.

[0080] In this embodiment, specifically: the bottom of the shell 101 is fixedly connected to a liquid storage tank 104, and the etching liquid is stored in the liquid storage tank 104; a filter 215 is installed on the rear surface of the liquid storage tank 104, and the rear surface of the filter 215 is connected to an infusion tube 216, and an infusion pump 217 is installed on the infusion tube 216. When the infusion pump 217 works, the etching liquid in the liquid storage tank 104 is transported to the separator plate 218, and the filter 215 is used to prevent impurities from clogging the pipeline and the infusion pump 217.

[0081] In this embodiment, specifically: a separatory plate 218 is fixedly connected to the inner wall of the shell 101, the separatory plate 218 is connected to one end of the infusion tube 216, and nozzles 219 are evenly installed on the bottom of the separatory plate 218. The etching liquid is sprayed out through the nozzles 219 to etch the circuit board.

[0082] When the present invention is working, the circuit board is placed on the fixed rod 213, the connecting head 211 is rotated by a wrench, the second threaded rod 210 is driven to rotate, the pressing plate 212 is driven to approach the circuit board, and the clamping block 214 is used to clamp the circuit board, which can adapt to the clamping requirements of circuit boards of different thicknesses, prevent the circuit board from moving or deforming, and ensure the etching quality. During the etching process, the infusion pump 217 works to transport the etching liquid in the liquid storage tank 104 to the liquid separation plate 218, and the etching liquid is sprayed out through the nozzle 219 and etches the circuit board. The etching liquid flowing into the bottom of the shell 101 is filtered by the filter screen 103 and then recycled to the liquid storage tank 104 for recycling, thereby reducing the waste of etching liquid. After the single-sided etching is completed, the first threaded rod 223 is driven to rotate by the motor 222, so that the slider 224 and the rack 225 move, and the multiple gears 226 are driven to rotate synchronously. The transmission shaft 228 rotates together with the gear 226 to complete the flipping of the circuit board. During the etching process of the circuit board, multiple circuit boards can be flipped synchronously, thereby improving production efficiency, shortening the production cycle, and reducing production costs.

[0083] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A circuit board double-sided etching device, comprising a housing (31), characterized in that: A cleaning assembly (10) is arranged inside the housing (31), and the cleaning assembly (10) comprises a cleaning plate (11), a spray hole (12), four guide rods (14), a support plate (15), a mounting box (16), an incomplete gear (17), a gear ring (18), a transmission shaft (19), a slider (20), a support rod (23), a support spring (24), two lifting seats (26) and a cleaning motor (28); The spray holes (12) are evenly arranged on the upper surface of the cleaning plate (11); the four guide rods (14) are symmetrically fixedly connected to the lower surface of the cleaning plate (11); the guide rods (14) are slidably connected to the inside of the support plate (15); the support springs (24) are sleeved on the outer side walls of the guide rods (14); mounting grooves (39) are symmetrically arranged on both sides of the housing (31); the two lifting seats (26) are slidably connected to the inside of the two mounting grooves (39); the mounting box (16) is fixedly connected to the lower surface of the support plate (15); the incomplete gear (17) is fixedly connected to the outer side wall of the transmission shaft (19); and the gear ring (18) is fixedly connected to the mounting The inner bottom wall of the box (16), the slider (20) is fixedly connected to the installation box (16) through the support rod (23), and the transmission shaft (19) is fixedly connected to the motor shaft of the cleaning motor (28); the outer wall of the incomplete gear (17) is meshingly connected to the inner wall of the ring gear (18), and the inner top wall and the inner bottom wall of the ring gear (18) are both provided with teeth. The transmission shaft (19) is rotatably connected to the inside of the two lifting seats (26), and the cleaning motor (28) is installed on one side of the lifting seat (26); the top end of the support spring (24) is against the lower surface of the cleaning plate (11), and the bottom end of the support spring (24) is against the upper surface of the support plate (15).

2. A circuit board double-sided etching device according to claim 1, characterized in that: The inner wall of the lifting seat (26) is symmetrically provided with sliding grooves (29), and the slider (20) is slidably connected to the inner wall of the sliding groove (29); the inner wall of the sliding groove (29) is fixedly connected with a positioning rod (21), and the slider (20) is slidably connected to the outer wall of the positioning rod (21), and the outer wall of the positioning rod (21) is sleeved with two return springs (22), one end of the return spring (22) supports the lifting seat (26), and the other end of the return spring (22) supports the slider (20); avoidance grooves (30) are provided on both sides of the installation box (16), and the transmission shaft (19) is located inside the avoidance grooves (30).

3. A circuit board double-sided etching device according to claim 1, characterized in that: The inner side wall of the installation groove (39) is fixedly connected to two limit rods (27), the lifting seat (26) is slidably connected to the outer side walls of the two limit rods (27), two lifting cylinders (25) are symmetrically installed on both sides of the housing (31), and the cylinder shafts of the lifting cylinders (25) are fixedly connected to the lower surface of the lifting seat (26); a spray plate (33) is installed on the top of the inner side wall of the housing (31), and the spray plate (33) The lower surface of the housing (31) is evenly equipped with spray heads (32), and the spray plate (33) is located above the cleaning plate (11); the inner bottom wall of the housing (31) is equipped with a liquid storage tank (40), the top of the inner wall of the liquid storage tank (40) is equipped with a filter plate (35), and the upper surface of the filter plate (35) is symmetrically equipped with two handles (36), and the cleaning plate (11) and the spray plate (33) are both connected to the liquid storage tank (40) through a delivery pump.

4. A circuit board double-sided etching device according to claim 3, characterized in that: Two clamping plates (34) are rotatably connected to the inner wall of the casing (31), and two flipping motors (38) are symmetrically installed on the two sides of the casing (31). The motor shaft of the flipping motor (38) is fixedly connected to the clamping plates (34), and the clamping plates (34) are located between the spray plate (33) and the cleaning plate (11).

5. A circuit board double-sided etching device, comprising a clamping assembly (220), characterized in that: The clamping assembly (220) comprises a driving box (221), a motor (222), a first threaded rod (223), a slider (224), a rack (225), a gear (226), a bearing seat (227), a transmission shaft (228), a support plate (229), a second threaded rod (210), a pressure plate (212) and a fixing rod (213); The inner wall of the driving box (221) is provided with a motor (222), the output shaft of the motor (222) is fixedly connected to one end of a first threaded rod (223), the first threaded rod (223) is rotatably connected to the inner wall of the driving box (221), the outer wall of the first threaded rod (223) is threadedly connected to a slider (224), the top of the slider (224) is fixedly connected to a rack (225), the rack (225) is slidably connected to the inner wall of the driving box (221), the inner wall of the driving box (221) is evenly rotatably connected to a gear (226), the rack (225) is connected to the inner wall of the driving box (221) The gear (226) is meshed, and the front surface of the drive box (221) is fixedly connected to a bearing seat (227). The gear (226) is fixedly connected to one end of a transmission shaft (228), and the transmission shaft (228) is rotatably connected to the inside of the bearing seat (227). One end of the transmission shaft (228) is fixedly connected to a support plate (229), and the inner wall of the support plate (229) is rotatably connected to a second threaded rod (210), and the outer wall of the second threaded rod (210) is threadedly connected to a pressure plate (212), and the front surface of the support plate (229) is symmetrically fixedly connected to a fixing rod (213).

6. A circuit board double-sided etching device according to claim 5, characterized in that: The top end of the second threaded rod (210) is fixedly connected to a connector (211); the top of the fixed rod (213) and the bottom of the pressure plate (212) are symmetrically fixedly connected to clamping blocks (214).

7. A circuit board double-sided etching device according to claim 5, characterized in that: A main body assembly (100) is arranged outside the clamping assembly (220), and the main body assembly (100) comprises a shell (101) and a supporting leg (102); The bottom of the shell (101) is symmetrically and fixedly connected to support legs (102); the inner side wall of the shell (101) is detachably and fixedly connected to a filter screen (103).

8. A circuit board double-sided etching device according to claim 7, characterized in that: The bottom of the housing (101) is fixedly connected to a liquid storage tank (104); a filter (215) is installed on the rear surface of the liquid storage tank (104); the rear surface of the filter (215) is connected to an infusion tube (216); and an infusion pump (217) is installed on the infusion tube (216).

9. A circuit board double-sided etching device according to claim 8, characterized in that: A liquid separation plate (218) is fixedly connected to the inner side wall of the housing (101), the liquid separation plate (218) is in communication with one end of the infusion tube (216), and nozzles (219) are evenly installed on the bottom of the liquid separation plate (218).

10. A circuit board double-sided etching method, applied to the circuit board double-sided etching device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Install the circuit board to be etched between two clamping plates, and spray the etching liquid from the spray head to etch the upper surface of the circuit board; Step 2: The flip motor drives the circuit board to flip and etch the other side of the circuit board; Step 3: The lifting cylinder pushes the lifting seat upward, and the cleaning plate fits the circuit board to clean the colloid on the circuit board; Step 4: The cleaning plate reciprocates and sprays out etching liquid at the same time, and etches again while cleaning the gelatinous plate aggregates; Step 5: After cleaning, the flip motor drives the circuit board to flip and clean and etch the other side of the circuit board.

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