PCB Etching Agent Concentration Adjusting Device

Abstract

The PCB etching agent concentration adjustment device belongs to the technical field of etching agents. In order to solve the problem that during the actual adjustment process, it is necessary to continuously stir it to achieve a balanced state of the solution, and the existing stirring mechanism has poor stirring efficiency; in the present invention, during the stirring process, the motor drives the drive shaft, and then drives the rotating shaft to rotate through the fixed ring. When the rotating shaft rotates, it drives the stirring blades to stir the etching solution and the added solution inside the stirring tank through the fixed ring. During the rotation of the rotating shaft, it drives the movable shaft to rotate. Since the outer wall of the movable shaft is provided with an inclined annular groove, the present invention realizes that under the guidance of the fixed shaft, the movable shaft, the rotating shaft, the fixed ring and the stirring blades will reciprocate up and down during the rotation process, improving the stirring effect.

Description

Technical Field

[0001] The present invention relates to the technical field of etching agents, and particularly to a device for adjusting the concentration of PCB etching agents. Background Art

[0002] An etching agent is a raw material for copperplate engraving, and is a liquid for engraving by eroding the characteristics of materials. Theoretically, any reagent that can oxidize copper to form a soluble copper salt can be used to etch copper-clad laminates. However, aspects such as the damage to the resist layer, etching rate, etching coefficient, copper dissolution capacity, solution regeneration and copper recovery, environmental protection and economic effects need to be considered.

[0003] During the etching process, over time, the concentrations of certain substances in the etching solution will decrease to varying degrees, and ultimately lead to a decrease in the etching rate. The etching solution concentration can be restored by adding an adjustment solution and controlling the amount of the adjustment solution, so that the etching solution can be recycled. However, during the actual adjustment process, it is necessary to continuously stir it to achieve a balanced state of the solution. The existing stirring mechanism has poor stirring efficiency. In addition, before adjusting the solution, it is necessary to measure the volume of the overall solution. Due to the high acidity and alkalinity of the solution, accurate measurement is inconvenient. Moreover, during the mixing process, different raw materials need to be added multiple times, and the operation is relatively cumbersome.

[0004] To solve the above problems, a device for adjusting the concentration of PCB etching agents is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for adjusting the concentration of PCB etching agents, which solves the problems in the background art that during the actual adjustment process, it is necessary to continuously stir it to achieve a balanced state of the solution, the existing stirring mechanism has poor stirring efficiency, and before adjusting the solution, it is necessary to measure the volume of the overall solution. Due to the high acidity and alkalinity of the solution, accurate measurement is inconvenient. Moreover, during the mixing process, different raw materials need to be added multiple times, and the operation is relatively cumbersome.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A device for adjusting the concentration of PCB etching agents includes a stirring mechanism, a volume measuring mechanism and a feeding mechanism provided on the stirring mechanism. The stirring mechanism includes a stirring tank, a driving mechanism and a reciprocating motion component. An internally and externally penetrating inlet and outlet pipe is provided below one side of the stirring tank, and a concentration measuring device is provided below the outer wall of the stirring tank;

[0007] The driving mechanism includes a motor fixedly connected to the bottom of the stirring tank. The output end of the motor is fixedly connected to a driving shaft extending into the stirring tank. The top of the driving shaft is slidably connected to a first limiting shaft. The top of the first limiting shaft is fixedly connected to a rotating shaft. A fixing ring is fixedly connected to the outer wall of the rotating shaft, and stirring blades are evenly distributed on the outer wall of the fixing ring;

[0008] The reciprocating motion assembly includes fixed rods evenly distributed on the inner wall of the mixing tank. The other end of the fixed rod is fixedly connected to a housing. An activity shaft is movably arranged inside the housing. The top of the rotating shaft extends into the housing and is fixedly connected to the activity shaft. An annular groove is arranged on the outer wall of the activity shaft. A fixed shaft is fixedly connected to the inner wall of the housing, and the other end of the fixed shaft extends into the annular groove. The top of the activity shaft is fixedly connected to a second limiting shaft extending outside the housing. A rotating ring corresponding to the second limiting shaft is rotatably connected to the top of the housing, and the rotating ring is slidably connected to the second limiting shaft.

[0009] Further, the volume measuring mechanism includes a measuring component and a lifting component. The measuring component includes a guiding rod fixedly connected to the inner wall of the mixing tank. A conical plate is slidably connected to the guiding rod. A sealing ring is fixedly connected to the outer edge of the top of the conical plate. The conical plate and the sealing ring are in contact with the inner wall of the mixing tank. A sleeve is fixedly connected to the middle of the top of the conical plate, and an activity groove is arranged inside the sleeve.

[0010] Further, the lifting component includes a connecting plate fixedly connected to the top of the mixing tank. A support platform is fixedly connected to the inner side of the connecting plate. A liquid accumulation groove is arranged on the top of the support platform. The measuring component further includes a second ultrasonic distance measuring instrument and a first ultrasonic distance measuring instrument fixedly connected to the bottom of the connecting plate and the support platform respectively. A reflecting plate corresponding to the second ultrasonic distance measuring instrument is fixedly connected to the top of the sealing ring.

[0011] Further, the lifting component further includes a fixed frame fixedly connected to the outer wall of the sleeve. A first telescopic cylinder is fixedly connected to the inner wall of the fixed frame. The output end of the first telescopic cylinder extends into the sleeve and is connected to a clamping plate, and the clamping plate corresponds to the activity groove.

[0012] Further, a sliding rod is fixedly connected to the outer wall of the output end of the first telescopic cylinder. The sliding rod is slidably connected to the fixed frame, and the other end of the sliding rod is fixedly connected to a friction plate corresponding to the inner wall of the mixing tank.

[0013] Further, the lifting component further includes a transmission shaft slidably connected to the top of the second limiting shaft. A lead screw is fixedly connected to the top of the transmission shaft. A threaded groove corresponding to the lead screw is arranged inside the clamping plate. The lifting component further includes a floating block arranged outside the lead screw, and the floating block is located inside the sleeve. The position of the floating block corresponds to the first ultrasonic distance measuring instrument.

[0014] Further, the blanking mechanism includes a blanking component and a linkage component. The blanking component includes a raw material cylinder rotatably connected to the top of the support platform. A sealing cover is arranged on the top of the raw material cylinder. Partition plates are evenly distributed inside the raw material cylinder.

[0015] Further, solution outlets are evenly distributed on the outer wall of the raw material cylinder. A support plate is fixedly connected to the outer edge of the raw material cylinder. A solution box is slidably connected to the support plate. A solution inlet corresponding to the solution outlet is arranged inside the solution box. A fixed block is fixedly connected to the outer wall of the solution box. A chute is also arranged on the outer wall of the solution box. Solution outlet holes communicating with the inside of the solution box are evenly distributed in the chute. A slider corresponding to the chute is fixedly connected to the support plate. The other end of the slider is fixedly connected to a liquid outlet pipe.

[0016] Further, the linkage assembly includes a communication hole arranged at the bottom of the support table, and the communication hole is communicated with the liquid accumulation tank. The linkage assembly further includes a linkage rod rotatably connected to the support table, and the linkage rod is fixedly connected to the lead screw. A bevel gear is fixedly connected to the top of the linkage rod.

[0017] Further, the linkage assembly further includes a second telescopic cylinder fixedly connected to the bottom of the raw material cylinder. The output end of the second telescopic cylinder is fixedly connected to a meshing wheel corresponding to the bevel gear. A third telescopic cylinder corresponding to the solution box is fixedly connected to the top of the support table.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. For the PCB etchant concentration adjustment device provided by the present invention, during the stirring process, the motor drives the drive shaft, and then drives the rotating shaft through the fixed ring. When the rotating shaft rotates, the stirring blades are driven by the fixed ring to stir the etchant and the added solution inside the stirring tank. During the rotation of the rotating shaft, the movable shaft is driven to rotate. Since the outer wall of the movable shaft is provided with an inclined annular groove, under the guidance of the fixed shaft, the movable shaft, the rotating shaft, the fixed ring and the stirring blades will move up and down reciprocally during the rotation process, thereby improving the stirring effect.

[0020] 2. For the PCB etchant concentration adjustment device provided by the present invention, before the concentration adjustment, during the stirring, the motor drives the second limit shaft to rotate. The second limit shaft drives the lead screw to rotate through the transmission shaft. When the first telescopic cylinder extends, the clamping plate meshes with the outer wall of the lead screw. When the lead screw rotates, it drives the clamping plate, the first telescopic cylinder, the sleeve and the conical plate to move downward until the conical plate squeezes the etchant inside the stirring tank, causing the liquid level of the etchant to be higher than the conical plate. When the liquid level of the etchant is higher than the conical plate, the floating block inside the sleeve floats on the liquid surface of the etchant. By the cooperation of the second ultrasonic distance measuring instrument and the reflector, the horizontal height of the reflector is measured, and then the volume of the liquid below the conical plate inside the stirring tank can be calculated through calculation. The volume of the solution inside and above the conical plate can be calculated through the first ultrasonic distance measuring instrument and the floating block. The concentration is measured by the concentration measuring device, which is convenient for measuring the total mass of each solution in the etchant, and the measurement accuracy is relatively high, which is convenient for subsequent concentration adjustment.

[0021] 3. When the PCB etchant concentration adjustment device provided by the present invention performs concentration adjustment, the guide rod rotates in the reverse direction to reset the sleeve and the movable groove. Subsequently, the first telescopic cylinder retracts, causing the sliding rod to squeeze the friction plate, making the friction plate fit against the inner wall of the stirring tank to fix the sleeve and the movable groove in place. Then, under the rotation of the guide rod and the lead screw, the second telescopic cylinder extends, causing the meshing wheel to engage with the bevel gear. At this time, the raw material cylinder rotates. Since different solutions are stored between adjacent partitions, the raw material solution to be added corresponds to the third telescopic cylinder above the support platform. Since the inside of the raw material cylinder is in a sealed state, when the solution inlet and the solution outlet on the inner side of the solution box coincide, the solution inside the raw material cylinder will enter the solution box. When the third telescopic cylinder extends, it lifts the corresponding solution box. The solution inside the solution box enters the liquid outlet pipe through the solution outlet hole and the slider under the action of the lifting of the solution box, and finally enters the stirring tank through the sleeve under the liquid accumulation tank and the communication hole. Moreover, the amount of the solution can be controlled by the height of the extension of the third telescopic cylinder, achieving precise addition of raw materials. The selection of the raw material solution and the volume of the raw material solution are completely completed by the second telescopic cylinder and the third telescopic cylinder, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the exploded view of the overall structure of the present invention;

[0024] Figure 3 is the exploded view of the stirring mechanism structure of the present invention;

[0025] Figure 4 is the exploded view of the driving mechanism and the reciprocating motion component structure of the present invention;

[0026] Figure 5 is the structural schematic diagram of the volume measurement mechanism of the present invention;

[0027] Figure 6 is the structural schematic diagram of the measurement component of the present invention;

[0028] Figure 7 is the structural schematic diagram of the lifting component of the present invention;

[0029] Figure 8 is the structural schematic diagram of the blanking mechanism of the present invention;

[0030] Figure 9 is the exploded view of the blanking mechanism structure of the present invention;

[0031] Figure 10 is the structural schematic diagram of the blanking component of the present invention;

[0032] Figure 11 Schematic diagram of the linkage component structure of the present invention.

[0033] In the figure: 1. Stirring mechanism; 11. Stirring tank; 111. Inlet and outlet pipe; 112. Concentration measuring device; 12. Driving mechanism; 121. Motor; 122. Driving shaft; 123. First limiting shaft; 124. Rotating shaft; 125. Fixed ring; 126. Stirring blade; 13. Reciprocating motion component; 131. Fixed rod; 132. Housing; 133. Moving shaft; 134. Annular groove; 135. Fixed shaft; 136. Rotating ring; 137. Second limiting shaft; 2. Volume measuring mechanism; 21. Measuring component; 211. Guide rod; 212. Conical plate; 213. Sealing ring; 214. Sleeve; 215. Moving groove; 216. First ultrasonic rangefinder; 217. Second ultrasonic rangefinder; 218. Reflector; 22. Lifting component; 221. Connecting plate; 222. Support platform; 2221. Liquid accumulation tank; 223. Fixed frame; 224. First telescopic cylinder; 225. Clamping plate; 226. Transmission shaft; 2261. Lead screw; 227. Floating block; 228. Slide bar; 229. Friction plate; 3. Feeding mechanism; 31. Feeding component; 311. Raw material cylinder; 3111. Solution outlet; 312. Partition board; 313. Support plate; 314. Solution box; 3141. Solution inlet; 315. Fixed block; 3151. Slide groove; 3152. Solution outlet hole; 316. Slide block; 317. Liquid outlet pipe; 318. Sealing cover; 32. Linkage component; 321. Communication hole; 322. Linkage rod; 323. Bevel gear; 324. Second telescopic cylinder; 325. Meshing wheel; 326. Third telescopic cylinder. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] In order to solve the technical problem that during the actual adjustment process, it is necessary to continuously stir it to achieve a balanced state of the solution, and the existing stirring mechanism has poor stirring efficiency, as Figures 1-4 shown, the following preferred technical solutions are provided:

[0036] PCB Etching Agent Concentration Adjustment Device, including a stirring mechanism 1, a volume measuring mechanism 2 and a feeding mechanism 3 arranged on the stirring mechanism 1. The stirring mechanism 1 includes a stirring tank 11, a driving mechanism 12 and a reciprocating motion assembly 13. There is an internally and externally penetrating inlet and outlet pipe 111 arranged below one side of the stirring tank 11. The inlet and outlet pipe 111 is used to recycle the used etching agent. A concentration measuring device 112 is arranged below the outer wall of the stirring tank 11. The concentration measuring device 112 is used to detect the concentration of various components in the recycled etching agent;

[0037] The driving mechanism 12 includes a motor 121 fixedly connected to the bottom of the stirring tank 11. The output end of the motor 121 is fixedly connected to a driving shaft 122 extending into the interior of the stirring tank 11. The top of the driving shaft 122 is slidably connected to a first limiting shaft 123. When the driving shaft 122 rotates, the first limiting shaft 123 rotates along with it and the first limiting shaft 123 can slide up and down. The top of the first limiting shaft 123 is fixedly connected to a rotating shaft 124. A fixing ring 125 is fixedly connected to the outer wall of the rotating shaft 124. Stirring blades 126 are evenly distributed on the outer wall of the fixing ring 125. The stirring blades 126 are used for stirring during the adjustment of the etching agent;

[0038] The reciprocating motion assembly 13 includes fixing rods 131 evenly distributed on the inner wall of the stirring tank 11. The other end of the fixing rod 131 is fixedly connected to a housing 132. An activity shaft 133 is movably arranged inside the housing 132. The top of the rotating shaft 124 extends into the interior of the housing 132 and is fixedly connected to the activity shaft 133. An annular groove 134 is arranged on the outer wall of the activity shaft 133, and the annular groove 134 has a certain inclination. A fixing shaft 135 is fixedly connected to the inner wall of the housing 132, and the other end of the fixing shaft 135 extends into the annular groove 134. During the rotation of the activity shaft 133, it will move up and down reciprocally under the guidance of the annular groove 134 and the fixing shaft 135. The top of the activity shaft 133 is fixedly connected to a second limiting shaft 137 extending outside the housing 132. A rotating ring 136 corresponding to the second limiting shaft 137 is rotatably connected to the top of the housing 132, and the rotating ring 136 is slidably connected to the second limiting shaft 137. The second limiting shaft 137 and the activity shaft 133 are lubricated and sealed by the rotating ring 136 during the rotation and up and down reciprocating motion.

[0039] Specifically, during the stirring process, the motor 121 drives the drive shaft 122, and then drives the rotating shaft 124 through the fixed ring 125. When the rotating shaft 124 rotates, it drives the stirring blade 126 through the fixed ring 125 to stir the etching solution and the added solution inside the stirring tank 11. During the rotation of the rotating shaft 124, it drives the movable shaft 133 to rotate. Since the outer wall of the movable shaft 133 is provided with an inclined annular groove 134, under the guidance of the fixed shaft 135, the movable shaft 133, the rotating shaft 124, the fixed ring 125, and the stirring blade 126 will move up and down reciprocally during the rotation process.

[0040] To solve the technical problem that it is necessary to measure the volume of the overall solution before adjusting the solution. Since the pH value of the solution is relatively high, accurate measurement is relatively inconvenient, as Figures 5-7 shown, the following preferred technical solutions are provided:

[0041] The volume measuring mechanism 2 includes a measuring component 21 and a lifting component 22. The measuring component 21 includes a guide rod 211 fixedly connected to the inner wall of the stirring tank 11. A tapered plate 212 is slidably connected to the guide rod 211. A sealing ring 213 is fixedly connected to the top outer edge of the tapered plate 212. The tapered plate 212 and the sealing ring 213 are in contact with the inner wall of the stirring tank 11. A sleeve 214 is fixedly connected to the middle of the top of the tapered plate 212. An activity groove 215 is provided inside the sleeve 214. When the tapered plate 212 and the sleeve 214 move downward inside the stirring tank 11, the liquid level of the etching agent inside the stirring tank 11 will be lifted into the sleeve 214.

[0042] The lifting component 22 includes a connecting plate 221 fixedly connected to the top of the stirring tank 11. A support platform 222 is fixedly connected to the inner side of the connecting plate 221. A liquid accumulation groove 2221 is provided on the top of the support platform 222. The measuring component 21 further includes a second ultrasonic distance measuring instrument 217 and a first ultrasonic distance measuring instrument 216 respectively fixedly connected to the bottom of the connecting plate 221 and the support platform 222. A reflecting plate 218 corresponding to the second ultrasonic distance measuring instrument 217 is fixedly connected to the top of the sealing ring 213. The reflecting plate 218 and the second ultrasonic distance measuring instrument 217 cooperate to measure the horizontal height of the tapered plate 212, which is convenient for measuring the volume of the etching agent below the tapered plate 212 inside the stirring tank 11.

[0043] The lifting component 22 further includes a fixing frame 223 fixedly connected to the outer wall of the sleeve 214. A first telescopic cylinder 224 is fixedly connected to the inner wall of the fixing frame 223. The output end of the first telescopic cylinder 224 extends into the sleeve 214 and is connected to a clamping plate 225, and the clamping plate 225 corresponds to the activity groove 215.

[0044] A sliding rod 228 is fixedly connected to the outer wall of the output end of the first telescopic cylinder 224. The sliding rod 228 is slidably connected to the fixed frame 223. The other end of the sliding rod 228 is fixedly connected to a friction plate 229 corresponding to the inner wall of the mixing tank 11. When the first telescopic cylinder 224 retracts, the friction plate 229 adheres to the inner wall of the mixing tank 11 to ensure that the sleeve 214 and the conical plate 212 will not slide inside the mixing tank 11.

[0045] The lifting assembly 22 further includes a transmission shaft 226 slidably connected to the top of the second limiting shaft 137. The top of the transmission shaft 226 is fixedly connected to a lead screw 2261. A thread groove corresponding to the lead screw 2261 is provided inside the clamping plate 225. The lifting assembly 22 further includes a floating block 227 disposed outside the lead screw 2261, and the floating block 227 is located inside the sleeve 214. The position of the floating block 227 corresponds to that of the first ultrasonic distance measuring instrument 216. The floating block 227 floats on the surface of the etching agent. The horizontal height of the floating block 227 is measured by the cooperation of the first ultrasonic distance measuring instrument 216 and the floating block 227, which is used to calculate the volume of the etching liquid inside the conical plate 212 and the sleeve 214. Adding the volume of the etching agent below the conical plate 212 inside the mixing tank 11 can calculate the total volume of the overall etching liquid.

[0046] Specifically, before adjusting the concentration, when stirring, the motor 121 drives the second limiting shaft 137 to rotate. The second limiting shaft 137 drives the lead screw 2261 to rotate through the transmission shaft 226. By extending the first telescopic cylinder 224, the clamping plate 225 is engaged with the outer wall of the lead screw 2261. When the lead screw 2261 rotates, it drives the clamping plate 225, the first telescopic cylinder 224, the sleeve 214, and the conical plate 212 to move downward until the conical plate 212 squeezes the etching agent inside the mixing tank 11, causing the liquid level of the etching agent to be higher than the conical plate 212. When the liquid level of the etching agent is higher than the conical plate 212, the floating block 227 inside the sleeve 214 floats on the surface of the etching agent. By the cooperation of the second ultrasonic distance measuring instrument 217 and the reflector 218, the horizontal height of the reflector 218 is measured, and then the volume of the liquid below the conical plate 212 inside the mixing tank 11 can be calculated through calculation. The volume of the solution inside and above the conical plate 212 can be calculated by the first ultrasonic distance measuring instrument 216 and the floating block 227. The concentration is measured by the concentration measuring device 112, which is convenient for measuring the total mass of each solution in the etching agent.

[0047] To solve the technical problem that it is necessary to add different raw materials multiple times during the mixing process, and the operation is relatively cumbersome, as Figures 8-11 shown, the following preferred technical solutions are provided:

[0048] The blanking mechanism 3 includes a blanking component 31 and a linkage component 32. The blanking component 31 includes a raw material cylinder 311 rotatably connected to the top of the support table 222. A sealing cover 318 is provided at the top of the raw material cylinder 311. Partition plates 312 are evenly distributed inside the raw material cylinder 311, and different raw material solutions are stored between adjacent partition plates 312.

[0049] Solution outlets 3111 are evenly distributed on the outer wall of the raw material cylinder 311. A support plate 313 is fixedly connected to the outer edge of the raw material cylinder 311. A solution box 314 is slidably connected to the support plate 313. The inner side of the solution box 314 is in close contact with the outer wall of the raw material cylinder 311. A solution inlet 3141 corresponding to the solution outlet 3111 is provided on the inner side of the solution box 314. A fixing block 315 is fixedly connected to the outer wall of the solution box 314. A chute 3151 is also provided on the outer wall of the solution box 314. Solution outlet holes 3152 communicating with the inside of the solution box 314 are evenly distributed in the chute 3151. A slider 316 corresponding to the chute 3151 is fixedly connected to the support plate 313. The other end of the slider 316 is fixedly connected to a liquid outlet pipe 317. When the solution inlet 3141 is aligned with the solution outlet 3111, the raw material inside the raw material cylinder 311 flows into the solution box 314. During the upward sliding process of the solution box 314, the solution outlet holes 3152 correspond to the slider 316, and the solution inside the solution box 314 flows out from the solution outlet holes 3152, the slider 316, and the liquid outlet pipe 317.

[0050] The linkage component 32 includes a communication hole 321 provided at the bottom of the support table 222, and the communication hole 321 communicates with the liquid accumulation tank 2221. The linkage component 32 also includes a linkage rod 322 rotatably connected to the support table 222, and the linkage rod 322 is fixedly connected to the lead screw 2261. A bevel gear 323 is fixedly connected to the top of the linkage rod 322.

[0051] The linkage component 32 further includes a second telescopic cylinder 324 fixedly connected to the bottom of the raw material cylinder 311. The output end of the second telescopic cylinder 324 is fixedly connected to a meshing wheel 325 corresponding to the bevel gear 323. The meshing wheel 325 engages with the bevel gear 323 after the second telescopic cylinder 324 extends. A third telescopic cylinder 326 corresponding to the solution box 314 is fixedly connected to the top of the support table 222. Under the action of the third telescopic cylinder 326, the solution box 314 moves upward.

[0052] Specifically, when adjusting the concentration, the guide rod 211 rotates reversely to reset the sleeve 214 and the movable groove 215. Subsequently, the first telescopic cylinder 224 retracts, causing the sliding rod 228 to squeeze the friction plate 229, making the friction plate 229 fit against the inner wall of the stirring tank 11 to reset and fix the sleeve 214 and the movable groove 215. Then, under the rotation of the guide rod 211 and the lead screw 2261, the second telescopic cylinder 324 extends, causing the meshing wheel 325 to mesh with the bevel gear 323. At this time, the raw material cylinder 311 rotates. Since different solutions are stored between adjacent partitions 312, the raw material solution to be added corresponds to the third telescopic cylinder 326 above the support platform 222. Since the inside of the raw material cylinder 311 is in a sealed state, when the solution inlet 3141 on the inner side of the solution box 314 coincides with the solution outlet 3111, the solution inside the raw material cylinder 311 will enter the solution box 314. When the third telescopic cylinder 326 extends, it lifts the corresponding solution box 314. The solution inside the solution box 314 enters the liquid outlet pipe 317 through the solution outlet hole 3152 and the slider 316 under the action of the lifting of the solution box 314, and finally enters the stirring tank 11 through the sleeve 214 under the liquid accumulation tank 2221 and the communication hole 321. Moreover, the amount of the solution can be controlled by the height of the extension of the third telescopic cylinder 326, achieving precise addition of raw materials. And the selection of the raw material solution and its volume are completely completed by the second telescopic cylinder 324 and the third telescopic cylinder 326.

[0053] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A PCB etching agent concentration adjustment device, comprising a stirring mechanism, a volume measuring mechanism and a feeding mechanism arranged on the stirring mechanism, characterized in that: The stirring mechanism includes a stirring tank, a driving mechanism, and a reciprocating motion component. An inlet and outlet pipe that penetrates through the inside and outside is provided below one side of the stirring tank, and a concentration measuring device is provided below the outer wall of the stirring tank; The driving mechanism includes a motor fixedly connected to the bottom of the stirring tank. The output end of the motor is fixedly connected to a driving shaft extending into the stirring tank. A first limiting shaft is slidably connected to the top of the driving shaft. The top of the first limiting shaft is fixedly connected to a rotating shaft. A fixing ring is fixedly connected to the outer wall of the rotating shaft, and stirring blades are evenly distributed on the outer wall of the fixing ring; The reciprocating motion component includes fixing rods evenly distributed on the inner wall of the stirring tank. The other end of the fixing rod is fixedly connected to a housing. A movable shaft is movably arranged inside the housing. The top of the rotating shaft extends into the housing and is fixedly connected to the movable shaft. An annular groove is provided on the outer wall of the movable shaft. A fixing shaft is fixedly connected to the inner wall of the housing, and the other end of the fixing shaft extends into the annular groove. The top of the movable shaft is fixedly connected to a second limiting shaft extending outside the housing. A rotating ring corresponding to the second limiting shaft is rotatably connected to the top of the housing, and the rotating ring is slidably connected to the second limiting shaft; The volume measuring mechanism includes a measuring component and a lifting component. The measuring component includes a guiding rod fixedly connected to the inner wall of the stirring tank. A conical plate is slidably connected to the guiding rod. A sealing ring is fixedly connected to the outer edge of the top of the conical plate. The conical plate and the sealing ring are in contact with the inner wall of the stirring tank. A sleeve is fixedly connected to the middle of the top of the conical plate, and an activity groove is provided inside the sleeve; The lifting component includes a connecting plate fixedly connected to the top of the stirring tank. A support platform is fixedly connected to the inner side of the connecting plate. A liquid accumulation groove is provided on the top of the support platform. The measuring component further includes a second ultrasonic distance measuring instrument and a first ultrasonic distance measuring instrument fixedly connected to the bottom of the connecting plate and the support platform respectively. A reflecting plate corresponding to the second ultrasonic distance measuring instrument is fixedly connected to the top of the sealing ring.

2. The PCB etchant concentration adjustment device according to claim 1, wherein: The lifting component further includes a fixing frame fixedly connected to the outer wall of the sleeve. A first telescopic cylinder is fixedly connected to the inner wall of the fixing frame. The output end of the first telescopic cylinder extends into the sleeve and is connected to a clamping plate, and the clamping plate corresponds to the activity groove.

3. The PCB etchant concentration adjustment device according to claim 2, characterized in that: A sliding rod is fixedly connected to the outer wall of the output end of the first telescopic cylinder. The sliding rod is slidably connected to the fixing frame, and the other end of the sliding rod is fixedly connected to a friction plate corresponding to the inner wall of the stirring tank.

4. The PCB etchant concentration adjustment device according to claim 3, wherein: The lifting component further includes a transmission shaft slidably connected to the top of the second limiting shaft. A lead screw is fixedly connected to the top of the transmission shaft. A thread groove corresponding to the lead screw is provided inside the clamping plate. The lifting component further includes a floating block arranged outside the lead screw, and the floating block is located inside the sleeve. The position of the floating block corresponds to the first ultrasonic distance measuring instrument.

5. The PCB etchant concentration adjustment device according to claim 4, characterized in that: The feeding mechanism includes a feeding component and a linkage component. The feeding component includes a raw material cylinder rotatably connected to the top of the support platform. A sealing cover is provided on the top of the raw material cylinder. Partition plates are evenly distributed inside the raw material cylinder.

6. The PCB etchant concentration adjustment device according to claim 5, characterized in that: The outer wall of the raw material cylinder is evenly distributed with solution outlets. The outer edge of the raw material cylinder is fixedly connected with a support plate. A solution box is slidably connected to the support plate. A solution inlet corresponding to the solution outlet is arranged inside the solution box. A fixed block is fixedly connected to the outer wall of the solution box. A chute is also arranged on the outer wall of the solution box. Solution outlet holes communicating with the inside of the solution box are evenly distributed in the chute. A slider corresponding to the chute is fixedly connected to the support plate. The other end of the slider is fixedly connected with a liquid outlet pipe.

7. The PCB etchant concentration adjustment device according to claim 6, characterized in that: The linkage assembly includes a communication hole arranged at the bottom of the support table, and the communication hole is communicated with the liquid accumulation tank. The linkage assembly also includes a linkage rod rotatably connected to the support table, and the linkage rod is fixedly connected with the lead screw. A bevel gear is fixedly connected to the top of the linkage rod.

8. The PCB etchant concentration adjustment device according to claim 7, characterized in that: The linkage assembly also includes a second telescopic cylinder fixedly connected to the bottom of the raw material cylinder. The output end of the second telescopic cylinder is fixedly connected with a meshing wheel corresponding to the bevel gear. A third telescopic cylinder corresponding to the solution box is fixedly connected to the top of the support table.

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