Micro blind hole machining device for composite copper foil

Abstract

The invention provides a micro blind hole processing device for a composite copper foil, which is used for solving the problem that the uniformity of a plating layer in a hole of a composite copper foil finished product cannot be ensured due to the lack of a device capable of defoaming a base film along with a horizontal continuous processing flow of the composite copper foil in the prior art. The micro blind hole machining device for the composite copper foil comprises a line body rack, an acid leaching treatment upper groove is formed in the upper left portion of the line body rack, a conductive treatment section is arranged on the right portion of the acid leaching treatment upper groove, and gas-liquid circulation lower grooves are formed in the lower portion of the acid leaching treatment upper groove and the lower portion of the conductive treatment section correspondingly; the upper acid leaching treatment tank and the conductive treatment section are communicated with a lower gas-liquid circulation tank at the lower part of the upper acid leaching treatment tank and the conductive treatment section through pipelines, the lower gas-liquid circulation tank and the conductive treatment section are fixed on a line body rack, and the upper acid leaching treatment tank is used for removing bubbles in micro blind holes and through holes in a base membrane before copper coating of the base membrane and then removing pollutants on the surface of the base membrane through acid dissolution; and the adhesion between the copper plating layer and the base material is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of composite copper foil production and processing, in particular to a micro blind hole processing device for composite copper foil. Background Art

[0002] In the manufacture of batteries, composite copper foil can be used instead of copper foil as the negative electrode current collector of the battery to improve the mechanical properties and impact force of the current collector, reduce the amount of metallic copper used, and reduce the cost of battery manufacturing.

[0003] However, due to the immature development of technology, the existing composite copper foil production line still has many problems when making composite copper foil. For example, in order to facilitate the circuit connection of the battery negative electrode current collector, the composite copper foil needs to open micropores, blind holes and through holes on the base film during the pre-treatment process, and then perform copper coating treatment. However, some micropores, blind holes and through holes are too small in size, and air will adhere to them. During the base film copper coating treatment, the air will block the treatment liquid from coating the micropores, blind holes and through holes, resulting in the composite copper foil finished product. The hole is leaking plating, or the plating thickness in the hole is thinner than that outside the hole, and the copper layer density is unevenly distributed. When participating in the operation of the battery negative electrode current collector, the current conduction is not smooth and the contact fails, thereby reducing the safety performance of the battery and affecting the battery capacity; In addition, the common suction cups used in the prior art to remove air holes are separated by balls, so that the flat suction nozzle contacts the base film over a large area, and uses negative pressure suction to remove bubbles. On the one hand, the balls will cause indentations on the base film, which can easily damage the base film; on the other hand, the suction nozzle directly contacts the base film over a large area, which will cause the base film without holes to be sucked, causing the film cloth to move; finally, the suction cup cannot move with the horizontal continuous processing flow of the composite copper foil, and the film cloth needs to be stationary to perform the debubbling work, which affects the processing efficiency of the composite copper foil, and is obviously not suitable for the production of horizontal continuous composite copper foil. Summary of the invention

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a micro blind hole processing device for a composite copper foil, which is used to solve the problem that the prior art lacks a device that can defoam the base film along with the horizontal continuous processing flow of the composite copper foil, and cannot ensure the uniformity of the plating layer in the finished hole of the composite copper foil.

[0005] In order to achieve the above-mentioned object and other related objects, the present invention provides a micro blind hole processing device for composite copper foil, comprising: A wire frame, wherein an upper acid leaching tank is installed at the upper left part of the wire frame, a conductive treatment section is arranged at the right part of the upper acid leaching tank, a gas-liquid circulation lower tank is arranged at the lower part of the upper acid leaching tank and the conductive treatment section, and the upper acid leaching tank and the conductive treatment section are both connected to the gas-liquid circulation lower tank at the lower part thereof through pipelines, and the gas-liquid circulation lower tank and the conductive treatment section are both fixed on the wire frame; The acid immersion treatment tank is used to remove bubbles in the micro blind holes and through holes on the base film before copper coating. After that, the pollutants on the surface of the base film are removed by acid dissolution to enhance the adhesion between the copper plating layer and the substrate. The conductive processing section is used to coat the base film with copper; The gas-liquid circulation lower tank is used to receive the bubbles and waste liquid output from the acid leaching treatment upper tank and the conductive treatment section, and after filtering, the clean treatment liquid is input into the acid leaching treatment upper tank and the conductive treatment section.

[0006] Optionally, the acid leaching treatment upper tank includes an upper tank body, a flow isolation mounting plate, a limit slot and a fixed slot, the upper tank body is fixed to the upper left part of the inline body frame, the flow isolation mounting plates are fixed at the front and rear of the upper tank body, four limit slots are equidistantly provided on the flow isolation mounting plate, a plurality of fixed slots are provided on the right part of the flow isolation mounting plate, and the positions of the limit slots and the fixed slots on the front flow isolation mounting plate and the rear flow isolation mounting plate are vertically corresponding to each other front to back.

[0007] Optionally, the acid leaching treatment upper tank also includes slide rails, connecting grooves and sliders. Four slide rails are fixedly installed from left to right on the upper part of the rear wall of the rear flow isolation mounting plate and the inner side of the front wall of the upper tank body, and the four rear slide rails are respectively arranged directly behind the four rear limit slots. Connecting grooves are arranged on the upper parts of the four rear limit slots, and the four rear limit slots are respectively connected with the slide grooves of the four rear slide rails through the connecting grooves, and sliders are slidably installed in the slide rails.

[0008] Optionally, the acid leaching treatment upper tank also includes a hexagonal shaft and a sliding support, the front part of the upper tank body is rotatably installed with a hexagonal shaft, the left outer wall of the hexagonal shaft is installed with four sliding supports, the sliding support includes a sliding support part and a rotating sleeve part, the rotating sleeve part is rotatably installed in the rear part of the sliding support part, the rotating sleeve part is slidably sleeved on the outer wall of the hexagonal shaft, and positioning columns are fixed in the front walls of the four sliding support parts, and the front end outer walls of the four positioning columns are respectively fixedly connected to the four front sliding blocks.

[0009] Optionally, the acid leaching treatment upper tank also includes a sliding straight key type swivel seat and a limiting clamp plate. The rear walls of the four sliding support parts and the rear of the sliding support parts are provided with sliding straight key type swivel seats, and the front four sliding straight key type swivel seats are respectively fixed to the rear walls of the four sliding support parts, and the rear walls of the rear four sliding straight key type swivel seats are respectively fixedly connected to the rear four sliding blocks, the left wall and the right wall of the sliding straight key type swivel seat are fixed with limiting clamp plates, and the sliding straight key type swivel seat and the limiting clamp plate are both slidably connected in the limiting clamp slot.

[0010] Optionally, the acid leaching treatment upper tank also includes a sliding active bevel gear, a negative pressure suction air roller, a sliding driven bevel gear and a sliding meshing gear. The right outer wall of the rotating sleeve part is fixedly installed with a sliding active bevel gear. The two sliding straight key type turntables at the front and rear positions and located on the same vertical line are a pair. Two negative pressure suction air rollers are rotatably installed between the four pairs of sliding straight key type turntables. The front end outer wall of the lower negative pressure suction air roller is fixed with a sliding driven bevel gear, and the sliding driven bevel gear is meshed with the sliding active bevel gear. The rear end outer walls of the two negative pressure suction air rollers are both installed with sliding meshing gears, and the two sliding meshing gears are meshed together.

[0011] Optionally, the acid leaching treatment upper tank also includes a fixed active bevel gear, a fixed driven bevel gear, a fixed straight key type swivel seat, a fixed meshing gear, a liquid spray hole filling liquid roller and an auxiliary conveying roller. A plurality of fixed active bevel gears are slidably installed on the right outer wall of the hexagonal shaft. A fixed straight key type swivel seat is slidably clamped in the fixed groove. Two liquid spray hole filling liquid rollers are rotatably installed between the leftmost pair of fixed straight key type swivel seats, and two auxiliary conveying rollers are rotatably installed between several pairs of fixed straight key type swivel seats on the right. The front end outer walls of the lower liquid spray hole filling liquid roller and the auxiliary conveying roller are both installed with fixed driven bevel gears, and several fixed driven bevel gears are respectively meshed and transmitted with several fixed active bevel gears. The rear end outer walls of the two liquid spray hole filling liquid rollers and the auxiliary conveying roller are both installed with fixed meshing gears, and two adjacent fixed meshing gears are meshed and connected.

[0012] Optionally, the negative pressure suction air roller is provided with an air extraction hole, the liquid injection hole filling liquid roller is provided with a liquid delivery hole, and the horizontal distribution positions of the air extraction hole and the liquid delivery hole are on the same horizontal line as the horizontal distribution positions of the micro blind holes of the composite copper foil.

[0013] Optionally, the upper tank for acid leaching treatment also includes an input pipe mounting groove, an external spiral mounting end piece and an internal spiral matching stepped sleeve. An input pipe mounting groove is provided in the rear end of the lower negative pressure suction air roller and the spray liquid filling liquid roller and the front end of the upper negative pressure suction air roller and the spray liquid filling liquid roller. The rear end of the lower negative pressure suction air roller and the spray liquid filling liquid roller and the front end of the upper negative pressure suction air roller and the spray liquid filling liquid roller are fixed with an external spiral mounting end piece, and an internal spiral matching stepped sleeve is threadedly connected to the external spiral mounting end piece.

[0014] Optionally, the gas-liquid circulation lower tank includes a gas-liquid circulation pipe, a gas-liquid input installation pipe and an ultrasonic output component. The gas-liquid input installation pipe is rotatably connected between the inner spiral stepped sleeve and the outer spiral installation end piece, and the gas-liquid input installation pipe on the negative pressure suction air roller is externally connected to a negative pressure air pump, and the gas-liquid input installation pipe on the liquid spraying and filling liquid roller is externally connected to a liquid delivery pump. A gas-liquid circulation pipe is arranged in the gas-liquid circulation lower tank, and the gas-liquid circulation pipe is used to transport gas and treatment liquid. The negative pressure air pump and the liquid delivery pump are connected to the gas-liquid circulation lower tank through the gas-liquid circulation pipe, and an ultrasonic output component is installed at the lower part of the acid leaching treatment upper tank.

[0015] As described above, the micro blind hole processing device of the composite copper foil of the present invention has at least the following beneficial effects: 1. The holes on the hollow roller are used so that negative pressure exhaust can be carried out without being separated from the membrane cloth, thus avoiding indentation and damage to the base membrane; 2. The hollow roller is linked with the line conveying system. While pumping air and delivering liquid, the base film can also be horizontally and continuously conveyed, which ensures the processing efficiency of the composite copper foil. At the same time, the bubbles in the holes of the composite copper foil are extracted and the processing liquid is injected, which greatly improves the coating effect of the coating in the holes and ensures the overall uniformity of the copper layer of the composite copper foil. It is beneficial to improve the conductivity of the current in the subsequent operation of the negative electrode current collector of the battery, improve the safety performance of the battery, and ensure the battery capacity; 3. Through the sliding of the slider and the slide rail, the position of the sliding straight key type swivel seat can be driven to adjust, so that the rotation cycle and spacing of the negative pressure suction air roller and the liquid spray hole filling liquid roller and the transmission speed of the base film are matched with the hole position, and accurate air extraction is performed to ensure the degassing effect in the hole, while preventing the base film from being offset due to a large range of contact between the suction nozzle and the base film, thereby improving the production effect of the composite copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic schematic diagram showing the overall structure of the micro blind hole processing device of the composite copper foil of the present invention from a southeast perspective.

[0017] Figure 2 Shown is a stereoscopic schematic diagram of the trough installation structure of the present invention from a southwest perspective.

[0018] Figure 3 Shown as the present invention Figure 2 A magnified view of the structure of region A.

[0019] Figure 4 It is a three-dimensional schematic diagram of the transmission structure in the upper tank for acid leaching treatment according to the present invention, viewed from the southwest.

[0020] Figure 5 Shown as the present invention Figure 4 A magnified view of the structure of region B.

[0021] Figure 6 It is a front view schematic diagram of the transmission structure of the negative pressure suction air roller and the liquid spray hole filling liquid roller of the present invention.

[0022] Figure 7 Shown is a front perspective view of the transmission structure of the negative pressure suction air roller and the liquid spray hole filling liquid roller in the state without the sliding support of the present invention.

[0023] Figure 8 It shows a front perspective view of the cooperation between the slider and the slide rail and the distribution positions of the air suction holes and the liquid delivery holes of the present invention.

[0024] Fig. 9 Shown is a left schematic view of the positioning structure of two negative pressure suction air rollers of the present invention.

[0025] Fig.10 It is a stereoscopic schematic diagram of the transmission structure of two negative pressure suction air rollers cooperating with each other according to the present invention from a southeast perspective.

[0026] Fig.11 It is a three-dimensional schematic diagram of the two negative pressure suction air rollers cooperating with the transmission structure of the present invention as viewed from the southwest top angle.

[0027] Fig.12 Shown is a left side cross-sectional view of the installation structure of two negative pressure suction air rollers and gas-liquid input installation pipes of the present invention.

[0028] Fig.13 Shown as the present invention Fig.12 A magnified view of the C region structure.

[0029] Fig.14 Shown as the present invention Fig.12 A magnified view of the D region structure.

[0030] Fig.15 It is a left schematic diagram of the transmission structure of two auxiliary conveying rollers of the present invention.

[0031] Component number description 1. Line body frame; 2. Acid leaching treatment upper tank; 201. Upper tank body; 202. Isolation mounting plate; 203. Limiting slot; 204. Fixed slot; 205. Slide rail; 206. Connecting slot; 207. Hexagonal shaft; 208. Sliding support; 2081. Sliding support part; 2082. Rotating sleeve part; 209a. Sliding active bevel gear; 209b. Fixed active bevel gear; 210a. Sliding driven bevel gear; 210b. Fixed driven bevel gear; 211a , sliding straight key type swivel seat; 211b, fixed straight key type swivel seat; 212, limit clamping plate; 213, negative pressure suction air roller; 214, liquid injection hole filling liquid roller; 215, auxiliary conveying roller; 216, air extraction hole; 217, liquid delivery hole; 218a, sliding meshing gear; 218b, fixed meshing gear; 219, input pipe installation groove; 220, positioning column; 221, slider; 222, external spiral installation end piece; 223, internal spiral matching stepped sleeve; 3. Gas-liquid circulation tank; 301. Gas-liquid circulation pipe; 302. Gas-liquid input installation pipe; 303. Ultrasonic output assembly; 4. Conductive treatment section. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0033] As described in the background technology, the existing composite copper foil production line will produce leakage plating in the hole when making composite copper foil, or the plating thickness in the hole is thinner than that outside the hole, and the density distribution of the copper layer is uneven. When participating in the operation of the negative electrode current collector of the battery, it will cause poor current conduction and contact failure, thereby reducing the safety performance of the battery and affecting the battery capacity. In the prior art, a common suction cup is used to remove air holes, and a ball is used to separate the air holes, so that a flat suction nozzle is in contact with a large area of ​​the base film, and negative pressure suction is used to remove bubbles. On the one hand, the ball will cause indentations on the base film, which is easy to damage the base film; on the other hand, the suction nozzle directly contacts the base film over a large area, which will cause the base film without holes to be sucked, causing the film cloth to move; finally, the suction cup cannot move with the horizontal continuous processing flow of the composite copper foil, and the film cloth needs to be stationary to perform the debubbling work, which affects the processing efficiency of the composite copper foil. Obviously, it is not suitable for the production of horizontal continuous composite copper foil.

[0034] like Figure 1 and Fig.15As shown, in order to solve the above problems, the inventors set an ultrasonic output component 303 to first use ultrasonic oscillation to loosen the bubbles in the hole, and then use a negative pressure suction air roller 213 and a liquid injection hole filling liquid roller 214 that run synchronously with the conveying system to accurately perform negative pressure suction and degassing of the micropores, blind holes and through holes on the upper part of the base film during the conveying process. Without affecting the processing efficiency of the composite copper foil, the uniformity of the plating layer in the finished hole of the composite copper foil is ensured. Therefore, a micro blind hole processing device for composite copper foil is invented, comprising: A wire frame 1, an acid leaching treatment upper tank 2 is installed on the upper left part of the wire frame 1, a conductive treatment section 4 is arranged on the right part of the acid leaching treatment upper tank 2, a gas-liquid circulation lower tank 3 is arranged at the lower part of the acid leaching treatment upper tank 2 and the conductive treatment section 4, and the acid leaching treatment upper tank 2 and the conductive treatment section 4 are both connected to the gas-liquid circulation lower tank 3 at the lower part thereof through pipelines, and the gas-liquid circulation lower tank 3 and the conductive treatment section 4 are both fixed on the wire frame 1; The acid leaching treatment tank 2 is used to remove bubbles in the micro blind holes and through holes on the base film before the base film is copper-plated, and then remove pollutants on the surface of the base film by acid dissolution to enhance the adhesion between the copper plating layer and the substrate; The conductive processing section 4 is used to coat the base film with copper; The gas-liquid circulation lower tank 3 is used to receive the bubbles and waste liquid output from the acid leaching treatment upper tank 2 and the conductive treatment section 4, and after filtering, the clean treatment liquid is input into the acid leaching treatment upper tank 2 and the conductive treatment section 4.

[0035] During use of the present invention, the composite copper foil base film moves horizontally from left to right in the processing line to perform various process treatments of the composite copper foil copper coating. Before entering the conductive treatment section 4, it first passes through the acid immersion treatment upper tank 2 for acid dissolution to enhance the adhesion between the copper plating layer and the substrate, and removes bubbles in the micro blind holes and through holes on the base film. It then enters the conductive treatment section 4 to plate the surface of the base film, including the copper film in the holes, and then continues to be transmitted to the right for post-treatment of the coating. Example 1

[0036] See also Figure 1-Figure 15In order to achieve the above-mentioned purpose and other related purposes, the present invention provides a micro blind hole processing device for composite copper foil, comprising: an acid leaching treatment upper tank 2, the acid leaching treatment upper tank 2 comprising an upper tank body 201, a flow isolation mounting plate 202, a limit card slot 203, a fixed slot 204, a hexagonal shaft 207, a sliding support 208, a sliding straight key type rotating seat 211a, a sliding active bevel gear 209a, a negative pressure suction air roller 213, a sliding driven bevel gear 210a, a sliding meshing gear 218a, a fixed active bevel gear 209b, a fixed driven bevel gear 210b, a fixed straight key type rotating seat 211b, a fixed meshing gear 218b, a liquid injection hole filling liquid roller 214, an auxiliary conveying roller 215, an air extraction hole 216 and a liquid delivery hole 217, the upper tank body 201 Fixed to the upper left part of the inline frame 1, the front and rear parts of the upper tank body 201 are fixed with flow isolation mounting plates 202, which are conducive to isolating the conveying system from the processing liquid, and the flow isolation mounting plate 202 is provided with four limit slots 203 at equal intervals, and the right part of the flow isolation mounting plate 202 is provided with a plurality of fixed slots 204, and the positions of the limit slots 203 and the fixed slots 204 on the front flow isolation mounting plate 202 and the rear flow isolation mounting plate 202 are both vertically corresponding to each other, and the front part of the upper tank body 201 is rotatably installed with a hexagonal shaft 207, and the left outer wall of the hexagonal shaft 207 is installed with four sliding supports 208, and the sliding support 208 includes a sliding support part 2081 and a rotating sleeve part 2082, and the rotating sleeve part 2082 is rotatably installed on In the rear part of the sliding support part 2081, the rotating sleeve part 2082 is slidably sleeved on the outer wall of the hexagonal shaft 207, and the rear walls of the four sliding support parts 2081 and the rear of the sliding support part 2081 are provided with sliding straight key type swivel seats 211a, and the right outer wall of the rotating sleeve part 2082 is fixedly installed with a sliding active bevel gear 209a. The two sliding straight key type swivel seats 211a at the front and rear positions that are on the same vertical line form a pair, and two negative pressure suction air rollers 213 are rotatably installed between the four pairs of sliding straight key type swivel seats 211a, and the front end outer wall of the lower negative pressure suction air roller 213 is fixed with a sliding driven bevel gear 210a, and the sliding driven bevel gear 210a is meshed and connected with the sliding active bevel gear 209a. The rear end outer wall is installed with a sliding meshing gear 218a, and the two sliding meshing gears 218a are meshed and connected. A plurality of fixed active bevel gears 209b are slidably installed on the right outer wall of the hexagonal shaft 207. A fixed straight key type rotating seat 211b is slidably clamped in the fixed groove 204. Two liquid spraying and hole filling liquid rollers 214 are rotatably installed between a pair of fixed straight key type rotating seats 211b at the leftmost end. Two auxiliary conveying rollers 215 are rotatably installed between several pairs of fixed straight key type rotating seats 211b on the right. The auxiliary conveying roller 215 can convey the composite copper foil base film from left to right. The roller walls of the negative pressure suction air roller 213, the liquid spraying and hole filling liquid roller 214 and the auxiliary conveying roller 215 are all made of rubber material, which increases the friction while preventing the damage of the membrane cloth and is corrosion-resistant.The front end outer walls of the lower liquid-spraying hole-filling liquid roller 214 and the auxiliary conveying roller 215 are both installed with fixed driven bevel gears 210b, and a plurality of fixed driven bevel gears 210b are respectively meshed and driven with a plurality of fixed driving bevel gears 209b. The rear end outer walls of the two liquid-spraying hole-filling liquid rollers 214 and the auxiliary conveying roller 215 are both installed with fixed meshing gears 218b, and two adjacent fixed meshing gears 218b are meshed and connected. The negative pressure suction air roller 213 is provided with an air extraction hole 216, and the liquid-spraying hole-filling liquid roller 214 is provided with a liquid delivery hole 217, and the horizontal distribution positions of the air extraction holes 216 and the liquid delivery holes 217 are on the same horizontal line as the horizontal distribution positions of the micro blind holes of the composite copper foil.

[0037] More perfectly, if Figure 12-14 As shown, the pickling treatment upper tank 2 also includes an input pipe installation groove 219, an outer spiral installation end piece 222 and an inner spiral matching stepped sleeve 223, and the rear ends of the lower negative pressure suction air roller 213 and the spray liquid filling hole liquid roller 214 and the front ends of the upper negative pressure suction air roller 213 and the spray liquid filling hole liquid roller 214 are both provided with an input pipe installation groove 219, and the rear ends of the lower negative pressure suction air roller 213 and the spray liquid filling hole liquid roller 214 and the front ends of the upper negative pressure suction air roller 213 and the spray liquid filling hole liquid roller 214 are both fixed. There is an outer spiral mounting end piece 222, on which an inner spiral matching stepped sleeve 223 is threadedly connected. The connection between the outer spiral mounting end piece 222 and the inner spiral matching stepped sleeve 223 provides space for the installation of the gas-liquid input mounting tube 302, so that the gas-liquid input mounting tube 302 can provide negative pressure and acid leaching treatment liquid to the air extraction hole 216 and the liquid delivery hole 217 in a stationary state without affecting the rotation of the negative pressure suction air roller 213 and the liquid injection hole filling liquid roller 214.

[0038] More perfectly, if Figure 2 , Figure 4 , Figure 13-Figure 14As shown, the gas-liquid circulation lower tank 3 includes a gas-liquid circulation pipe 301, a gas-liquid input installation pipe 302 and an ultrasonic output component 303. The gas-liquid input installation pipe 302 is rotatably connected between the inner spiral matching stepped sleeve 223 and the outer spiral installation end piece 222. The inner spiral matching stepped sleeve 223 and the outer wall of the gas-liquid input installation pipe 302 can be connected with a sealing kit, and the gas-liquid input installation pipe 302 on the negative pressure suction air roller 213 is externally connected to a negative pressure suction pump to provide power for the suction hole 216 to absorb bubbles in the membrane cloth hole. The gas-liquid input installation pipe 302 on the liquid injection hole filling liquid roller 214 is externally connected to a liquid delivery pump. In order to provide power for the liquid delivery hole 217 to spray the acid leaching treatment liquid into the membrane cloth holes, a gas-liquid circulation pipe 301 is arranged in the gas-liquid circulation lower tank 3, and the gas-liquid circulation pipe 301 is used to transmit gas and treatment liquid. The negative pressure vacuum pump and the liquid delivery pump are connected with the gas-liquid circulation lower tank 3 through the gas-liquid circulation pipe 301, so that the waste gas and waste liquid can enter the gas-liquid circulation lower tank 3 for filtration and degassing, and the new treatment liquid is input into the acid leaching treatment upper tank 2. The lower part of the acid leaching treatment upper tank 2 is installed with an ultrasonic output component 303, which can make the ultrasonic wave oscillate to loosen the bubbles in the base membrane holes before extracting bubbles, thereby reducing the difficulty of absorption and improving the degassing effect.

[0039] Specifically, when the composite copper foil base film moves horizontally from left to right to the acid leaching treatment upper tank 2, the hexagonal shaft 207 rotates counterclockwise following the line body transmission system, and the rotating sleeve part 2082 moves with the hexagonal shaft 207, driving the sliding active bevel gear 209a and the fixed active bevel gear 209b to rotate synchronously counterclockwise, and the sliding driven bevel gear 210a and the fixed driven bevel gear 210b are respectively synchronously meshed with the sliding active bevel gear 209a and the fixed active bevel gear 209b to drive, driving the lower negative pressure suction air roller 213, the liquid spray hole filling liquid roller 214 and the auxiliary conveying roller 215 to rotate synchronously. The lower sliding meshing gear 218a and the fixed meshing gear 218b rotate clockwise, respectively meshing with the upper sliding meshing gear 218a and the fixed meshing gear 218b, driving the upper sliding meshing gear 218a and the fixed meshing gear 218b to rotate counterclockwise, and the upper negative pressure suction air roller 213, the liquid spraying hole filling liquid roller 214 and the auxiliary conveying roller 215 rotate counterclockwise synchronously. The opposite rotation of each pair of negative pressure suction air rollers 213, the liquid spraying hole filling liquid rollers 214 and the auxiliary conveying rollers 215 can push the composite copper foil base film to move from left to right between them. The composite copper foil base film first passes through four pairs of negative pressure suction air rollers 213, the air suction holes 216 on which are connected to the holes on the composite copper foil base film, and the bubbles in the micropores, blind holes and through holes on the composite copper foil base film are sucked by negative pressure. After that, the composite copper foil base film passes through a pair of liquid spray hole filling liquid rollers 214, and the liquid delivery holes 217 are connected to the holes on the composite copper foil base film. The acid leaching treatment liquid is sprayed into the micropores, blind holes and through holes on the composite copper foil base film to ensure that the treatment liquid is in full contact with the hole walls of the micro blind holes and through holes on the composite copper foil base film to ensure the copper film plating effect of the conductive treatment section 4. The hollow The holes on the roller make it possible to carry out negative pressure vacuuming without being separated from the membrane cloth, thus avoiding indentations and damage to the base film. While the hollow roller is pumping air and delivering liquid, it can also be linked with the line conveying system to carry out horizontal and continuous conveyance of the base film, ensuring the processing efficiency of the composite copper foil while extracting the bubbles in the holes of the composite copper foil and injecting the treatment liquid, which greatly improves the coating effect of the coating in the holes and ensures the overall uniformity of the copper layer of the composite copper foil, which is beneficial to improve the conductivity of the current in the subsequent operation of the negative electrode current collector of the battery, improve the safety performance of the battery, and ensure the battery capacity. Example 2

[0040] See also Figure 2-Figure 9The present invention provides a micro blind hole processing device for composite copper foil. The acid leaching treatment upper tank 2 also includes: a slide rail 205, a connecting groove 206, a slider 221, a positioning column 220 and a limiting card plate 212. The upper part of the rear wall of the rear isolation mounting plate 202 and the inner side of the front wall of the upper tank body 201 are fixedly installed with four slide rails 205 from left to right, and the four rear slide rails 205 are respectively arranged directly behind the four rear limiting card slots 203. The upper part of the four rear limiting card slots 203 is provided with a connecting groove 206, and the four rear limiting card slots 203 are respectively connected by connecting grooves 206. The through slot 206 is interconnected with the slide slots of the four rear slide rails 205. Slide blocks 221 are slidably installed in the slide rails 205. The through slot 206 provides a passage for the slide blocks 221 to slide in the limit slot 203. Positioning columns 220 are fixed in the front walls of the four sliding support parts 2081, and the front end outer walls of the four positioning columns 220 are respectively fixedly connected to the four front slide blocks 221. The four front sliding straight key type rotating seats 211a are respectively fixed to the rear walls of the four sliding support parts 2081. The front and rear slide blocks 221 on the same vertical line The sliding is synchronized, so that when the four front sliders 221 slide in the slide rail 205, the four sliding support parts 2081 can be driven to move as a whole, so that the sliding active bevel gear 209a on it, the fixed active bevel gear 209b and the four front sliding straight key type rotating seats 211a are synchronously displaced left and right without affecting the rotation of the rotating sleeve part 2082 and the hexagonal shaft 207. The rear walls of the four rear sliding straight key type rotating seats 211a are respectively fixedly connected to the four rear sliders 221. When the four rear sliders 221 slide in the slide rail 205, the four rear sliders 221 can be driven to move. The moving straight key type swivel seat 211a synchronously moves left and right, and the left and right walls of the sliding straight key type swivel seat 211a are fixed with limiting clamping plates 212, and the sliding straight key type swivel seat 211a and the limiting clamping plates 212 are both slidably connected in the limiting clamping groove 203. When the slider 221 drives the sliding straight key type swivel seat 211a to move left and right, the limiting clamping plates 212 can synchronously slide left and right in the limiting clamping groove 203, thereby ensuring the water-blocking effect of the flow isolation mounting plate 202, so that the base membrane can be fully immersed in the acid immersion treatment liquid between the two flow isolation mounting plates 202, thereby ensuring the copper plating effect.

[0041] Specifically, when the composite copper foil line processes the next batch of base films with different micro blind hole positions, the line control system can be used to start the movement of the slider 221, and the sliding position of the slider 221 in the slide rail 205 can be adjusted to match the rotation cycle and spacing of the negative pressure suction air roller 213 and the liquid injection hole filling liquid roller 214 with the transmission speed of the base film and the hole position. In this way, the exhaust holes 216 of the negative pressure suction air roller 213 can be aligned and connected with the hole positions on the composite copper foil base film during rotation, and accurate exhaust can be performed to ensure the degassing effect in the holes while preventing the base film from being offset due to a large-scale contact between the suction nozzle and the base film, thereby improving the production effect of the composite copper foil.

[0042] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A micro blind hole processing device for composite copper foil, characterized in that: include: A wire frame (1), wherein an acid leaching treatment upper tank (2) is installed at the upper left portion of the wire frame (1), a conductive treatment section (4) is arranged at the right portion of the acid leaching treatment upper tank (2), and a gas-liquid circulation lower tank (3) is arranged at the lower portions of the acid leaching treatment upper tank (2) and the conductive treatment section (4), and the acid leaching treatment upper tank (2) and the conductive treatment section (4) are both connected to the gas-liquid circulation lower tank (3) at their lower portions through pipelines, and the gas-liquid circulation lower tank (3) and the conductive treatment section (4) are both fixed on the wire frame (1); The acid immersion treatment tank (2) is used to remove bubbles in micro blind holes and through holes on the base film before copper coating, and then remove pollutants on the surface of the base film by acid dissolution to enhance the adhesion between the copper plating layer and the substrate; The conductive processing section (4) is used to coat the base film with copper; The gas-liquid circulation lower tank (3) is used to receive the bubbles and waste liquid output from the acid leaching treatment upper tank (2) and the conductive treatment section (4), filter them, and then input the clean treatment liquid into the acid leaching treatment upper tank (2) and the conductive treatment section (4).

2. The micro blind hole processing device of composite copper foil according to claim 1, characterized in that: The acid leaching treatment upper tank (2) comprises an upper tank body (201), a flow isolation mounting plate (202), a limiting card slot (203) and a fixing slot (204); the upper tank body (201) is fixed to the upper left portion of the line body frame (1); the flow isolation mounting plate (202) is fixed to the front and rear portions of the upper tank body (201); four limiting card slots (203) are equidistantly provided on the flow isolation mounting plate (202); a plurality of fixing slots (204) are provided on the right portion of the flow isolation mounting plate (202); and the limiting card slots (203) and the fixing slots (204) on the front flow isolation mounting plate (202) and the rear flow isolation mounting plate (202) are both located in a front-to-back vertical correspondence.

3. The micro blind hole processing device of composite copper foil according to claim 2, characterized in that: The acid leaching treatment upper tank (2) further comprises a slide rail (205), a connecting groove (206) and a sliding block (221); four slide rails (205) are fixedly installed from left to right on the upper part of the rear wall of the rear flow isolation mounting plate (202) and the inner side of the front wall of the upper tank body (201); the four rear slide rails (205) are respectively arranged directly behind the four rear limit slots (203); the upper parts of the four rear limit slots (203) are each provided with a connecting groove (206); the four rear limit slots (203) are respectively connected to the slide grooves of the four rear slide rails (205) through the connecting groove (206); and the slide rails (205) are each slidably installed with a sliding block (221).

4. The micro blind hole processing device of the composite copper foil according to claim 3, characterized in that: The acid leaching treatment upper tank (2) further comprises a hexagonal shaft (207) and a sliding support (208); the front part of the upper tank body (201) is rotatably mounted with the hexagonal shaft (207); the left outer wall of the hexagonal shaft (207) is mounted with four sliding supports (208); the sliding support (208) comprises a sliding support portion (2081) and a rotating sleeve portion (2082); the rotating sleeve portion (2082) is rotatably mounted in the rear part of the sliding support portion (2081); the rotating sleeve portion (2082) is slidably sleeved on the outer wall of the hexagonal shaft (207); positioning columns (220) are fixed in the front walls of the four sliding support portions (2081); and the front end outer walls of the four positioning columns (220) are respectively fixedly connected to the four front sliding blocks (221).

5. The micro blind hole processing device of composite copper foil according to claim 4, characterized in that: The acid leaching treatment upper tank (2) further comprises a sliding straight key type rotating seat (211a) and a limiting clamping plate (212); the rear walls of the four sliding support parts (2081) and the rear of the sliding support parts (2081) are all provided with sliding straight key type rotating seats (211a); the four front sliding straight key type rotating seats (211a) are respectively fixed to the rear walls of the four sliding support parts (2081); the rear walls of the four rear sliding straight key type rotating seats (211a) are respectively fixedly connected to the four rear sliding blocks (221); the left wall and the right wall of the sliding straight key type rotating seat (211a) are both fixed with the limiting clamping plate (212); and the sliding straight key type rotating seat (211a) and the limiting clamping plate (212) are both slidably connected in the limiting clamping groove (203).

6. The device for processing micro blind holes of composite copper foil according to claim 5, characterized in that: The acid leaching treatment upper tank (2) further comprises a sliding active bevel gear (209a), a negative pressure suction air roller (213), an air extraction hole (216), a sliding driven bevel gear (210a) and a sliding meshing gear (218a); the sliding active bevel gear (209a) is fixedly mounted on the right outer wall of the rotating sleeve portion (2082); two sliding straight key type rotating seats (211a) located on the same vertical line at front and rear positions form a pair; two negative pressure suction air rollers (213) are rotatably mounted between the four pairs of sliding straight key type rotating seats (211a); the negative pressure suction air rollers (213) are rotatably mounted between the four pairs of sliding straight key type rotating seats (211a); The air induced roller (213) is provided with air extraction holes (216), and the horizontal distribution position of the air extraction holes (216) is on the same horizontal line as the horizontal distribution position of the micro blind holes of the composite copper foil. A sliding driven bevel gear (210a) is fixed to the front end outer wall of the lower negative pressure suction air roller (213), and the sliding driven bevel gear (210a) is meshingly connected with the sliding active bevel gear (209a). The rear end outer walls of the two negative pressure suction air rollers (213) are both equipped with sliding meshing gears (218a), and the two sliding meshing gears (218a) are meshingly connected.

7. The device for processing micro blind holes of composite copper foil according to claim 4, characterized in that: The acid leaching treatment upper tank (2) further comprises a fixed active bevel gear (209b), a fixed driven bevel gear (210b), a fixed straight key type rotating seat (211b), a fixed meshing gear (218b), a liquid spray hole filling liquid roller (214), an auxiliary conveying roller (215) and a liquid delivery hole (217); a plurality of fixed active bevel gears (209b) are slidably mounted on the right outer wall of the hexagonal shaft (207); a fixed straight key type rotating seat (211b) is slidably engaged in the fixed tank (204); two liquid spray hole filling liquid rollers (214) are rotatably mounted between a pair of the fixed straight key type rotating seats (211b) at the leftmost end; a liquid delivery hole (217) is provided on the liquid spray hole filling liquid roller (214), and the liquid delivery hole The horizontal distribution position of (217) is on the same horizontal line as the horizontal distribution position of the micro blind holes of the composite copper foil. Two auxiliary conveying rollers (215) are rotatably mounted between the several pairs of the fixed straight key type rotating seats (211b) on the right. The front end outer walls of the liquid spray hole filling liquid roller (214) and the auxiliary conveying roller (215) at the lower part are both mounted with fixed driven bevel gears (210b), and the several fixed driven bevel gears (210b) are respectively meshed with the several fixed driving bevel gears (209b) for transmission. The rear end outer walls of the two liquid spray hole filling liquid rollers (214) and the auxiliary conveying roller (215) are both mounted with fixed meshing gears (218b), and two adjacent fixed meshing gears (218b) are meshed and connected.

8. The micro blind hole processing device of composite copper foil according to claim 7, characterized in that: The acid leaching treatment upper tank (2) further comprises an input pipe mounting groove (219), an external spiral mounting end piece (222) and an internal spiral matching stepped sleeve (223); the rear end of the lower negative pressure suction air roller (213) and the liquid spray hole filling liquid roller (214) and the front end of the upper negative pressure suction air roller (213) and the liquid spray hole filling liquid roller (214) are both provided with an input pipe mounting groove (219); the rear end of the lower negative pressure suction air roller (213) and the liquid spray hole filling liquid roller (214) and the front end of the upper negative pressure suction air roller (213) and the liquid spray hole filling liquid roller (214) are both fixed with an external spiral mounting end piece (222); the internal spiral matching stepped sleeve (223) is threadedly connected to the external spiral mounting end piece (222).

9. The micro blind hole processing device of composite copper foil according to claim 8, characterized in that: The gas-liquid circulation lower tank (3) comprises a gas-liquid circulation pipe (301), a gas-liquid input installation pipe (302) and an ultrasonic output component (303); the gas-liquid input installation pipe (302) is rotatably connected between the inner spiral matching stepped sleeve (223) and the outer spiral installation end piece (222); the gas-liquid input installation pipe (302) on the negative pressure suction air roller (213) is externally connected to a negative pressure air pump; the gas-liquid input installation pipe (302) on the liquid injection hole filling liquid roller (214) is externally connected to a liquid delivery pump; the gas-liquid circulation lower tank (3) is provided with a gas-liquid circulation pipe (301) for transmitting gas and treatment liquid; the negative pressure air pump and the liquid delivery pump are connected to the gas-liquid circulation lower tank (3) through the gas-liquid circulation pipe (301); and the ultrasonic output component (303) is installed at the lower part of the acid leaching treatment upper tank (2).

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