Copper foil pickling and drying device

Abstract

The present application relates to copper foil pickling technical field, especially in kind of copper foil pickling drying device, including pickling part and drying part, pickling part and drying part in horizontal direction left and right in turn distribution.The present application through the drive assembly in pickling part synchronous drive tensioning assembly to copper foil is carried out intermittent transposition tensioning, cleaning assembly is carried out to the impurity on the surface of copper foil continuous scraping guide cleaning, guarantees the pickling comprehensiveness while, speed up the speed of copper foil surface oxide layer and other impurities fall off, reduce the residue of impurities, through the air drying assembly of drying part blows out the cold wind to the copper foil after pickling carries out cold air drying, again through the drying assembly to the cold wind heating, and then to the copper foil after pickling carries out hot air drying, guarantees the drying effect while, need not separately set up two groups of blowing parts, effectively reduce the input cost.

Description

Technical Field

[0001] This invention relates to the field of copper foil pickling technology, and in particular to a copper foil pickling and drying apparatus. Background Technology

[0002] During the production process, copper foil usually has oxides, oil stains and other impurities attached to its surface. These impurities will have an adverse effect on the quality and performance of the copper foil. Pickling agents can effectively remove these impurities, making the surface of the copper foil smoother and cleaner.

[0003] During pickling, copper foil needs to be pressed into the pickling solution by pressure rollers so that it is immersed in the pickling solution for pickling treatment. However, the part of the copper foil in contact with the pressure rollers cannot fully contact the pickling solution, resulting in incomplete pickling of the copper foil surface and the presence of impurities such as oxide layer. After pickling, the copper foil needs to be dried to prevent the pickling solution from adhering to the surface of the copper foil and causing corrosion. In order to speed up the drying process, a combination of cold air and hot air drying is often used. However, this drying method requires two sets of blowing components, resulting in a large overall space occupation and high investment cost for the drying equipment.

[0004] To address the aforementioned problems, the present invention provides a copper foil pickling and drying apparatus. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a copper foil pickling and drying apparatus to overcome the shortcomings of the prior art.

[0006] A copper foil pickling and drying apparatus includes a pickling section and a drying section, which are arranged sequentially in the horizontal direction.

[0007] The pickling section includes a processing tank, which is divided into an pickling tank and a rinsing tank from left to right. Reversing rollers are rotatably installed on the upper left, right, and middle parts of the processing tank. The pickling tank is used to pickle the copper foil, and the rinsing tank is used to rinse the copper foil. A tensioning component is rotatably installed in the pickling tank, and a cleaning component is rotatably installed in the rinsing tank. The tensioning component and the cleaning component are connected by a drive component. A rinsing component is installed on the inner wall of the right side of the rinsing tank, and a filter screen fixedly connected to the rinsing tank is installed below the cleaning component.

[0008] The drying section includes an oven located to the right of the rinsing tank. Inside the oven, two sets of guide rollers are rotatably installed, arranged alternately. An upper air guide frame is installed above the upper set of guide rollers, and a lower air guide frame is installed below the lower set of guide rollers. Multiple interconnected air outlets are opened on the left half of the upper air guide frame and the right half of the lower air guide frame. Multiple heating tubes are installed on the right half of the upper air guide frame and the right half of the lower air guide frame.

[0009] Preferably, the drive assembly includes a drive motor, which is mounted on the rear side of the rinsing tank via a motor mount. The output shaft of the drive motor is fixedly connected to the rear end of the drive shaft via a coupling. The front end of the drive shaft is connected to the rinsing assembly. A rotating shaft is rotatably mounted on the rear side of the pickling tank. The front end of the rotating shaft is connected to the tensioning assembly. The rear end of the rotating shaft is connected to the rear end of the drive shaft via a transmission belt.

[0010] Preferably, the tensioning assembly includes a tensioning shaft, the rear end of which is fixedly connected to a drive assembly, and the front end of which is rotatably connected to a pickling tank. Tensioning rings are symmetrically sleeved on the tensioning shaft, and a first connecting rod is installed between the two tensioning rings. A sliding ring is installed on the rear side of the rear tensioning ring via a second connecting rod. A return spring is connected between the front side of the front tensioning ring and the inner wall of the front side of the pickling tank. Abutting protrusions are evenly installed circumferentially on the rear side of the sliding ring, and fixing protrusions corresponding to the abutting protrusions are evenly installed circumferentially along the sliding ring on the inner wall of the rear side of the pickling tank.

[0011] Preferably, the cleaning assembly includes a mounting cylinder, the rear end of which is fixedly connected to the drive assembly, and the front end of which is rotatably connected to the flushing tank. Multiple cleaning scrapers are evenly installed on the side wall of the mounting cylinder along its circumference. The cleaning scraper has an L-shaped cross-section, and the side of the horizontal section of the cleaning scraper away from the side wall of the mounting cylinder is an arc surface. A chip guide is installed on the side of the cleaning scraper near the mounting cylinder. The chip guide has an L-shaped cross-section, and the side of the horizontal section of the chip guide near the mounting cylinder has a structure in which the thickness decreases from the middle to the front and rear sides, and slopes downward from the end near the vertical section of the chip guide to the end away from the vertical section of the chip guide. The side of the vertical section of the chip guide away from the vertical section of the cleaning scraper has a structure in which the thickness decreases from the middle to the front and rear sides.

[0012] Preferably, the mounting cylinder has multiple water inlets evenly distributed around its circumference on its side wall, and the cleaning scraper has an L-shaped cross-section connecting groove inside. The horizontal and vertical sections of the chip guide have water outlets that communicate with the connecting groove. The mounting cylinder has an inlet pipe inside, with its rear end rotatably connected to the mounting cylinder and its front end fixedly connected to and passing through the rinsing groove. The middle of the inlet pipe is connected to the fixed cylinder through a water injection pipe. The fixed cylinder has an arc-shaped groove on its outer side wall, with the angle corresponding to the arc-shaped groove on the circle being degrees. The arc-shaped groove is located on the lower left side of the fixed cylinder.

[0013] Preferably, the rinsing assembly includes a water pump, a drain outlet is provided on the right side of the bottom of the rinsing tank, the drain outlet is connected to the water pump inlet through a pipe, the water pump outlet is connected to the rinsing nozzle through a pipe, and the rinsing nozzle is divided into two groups, which are used to rinse the upper and lower surfaces of the copper foil respectively.

[0014] Preferably, the upper and lower air guide frames are both mounted on guide rods that are fixedly connected to the inner wall of the oven via a sliding fit, and the front side wall of the oven is an opening and closing door that is rotatably connected to other parts of the oven.

[0015] Preferably, multiple mounting rods are evenly installed on the inner wall of the upper end of the upper air guide frame, and moisture-absorbing sponges are sleeved on the mounting rods.

[0016] Preferably, except for the water outlets that are centered at the front and back, all other water outlets are inclined, with the front water outlets inclined forward and the rear water outlets inclined backward, in order to speed up the process of flushing away impurities with clean water.

[0017] With the above-described structure, the present invention uses a drive assembly in the pickling section to synchronously drive a tensioning assembly to intermittently reposition and tension the copper foil, and a cleaning assembly to continuously scrape and guide the cleaning of impurities on the surface of the copper foil. This ensures thorough pickling while accelerating the removal of impurities such as the oxide layer from the copper foil surface, reducing the residue of impurities. The cold air blown by the air-drying assembly in the drying section dries the pickled copper foil, and then the drying assembly heats the cold air to dry the pickled copper foil with hot air. This ensures the drying effect without the need for two separate sets of blowing components, effectively reducing investment costs. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a front cross-sectional view of the copper foil pickling and drying apparatus provided by the present invention;

[0020] Figure 2 This is a top view of the pickling section provided by the present invention;

[0021] Figure 3 This is the present invention. Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 4 This is the present invention. Figure 2 A magnified view of a section at point B in the middle;

[0023] Figure 5 This is a cross-sectional structural diagram of the cleaning scraper and chip guide of the present invention;

[0024] Figure 6 This is the present invention. Figure 1 A magnified view of a section at point C.

[0025] Reference numerals: 1. Pickling section; 11. Pickling tank; 12. Rinsing tank; 13. Reversing roller; 14. Tensioning assembly; 141. Tensioning shaft; 142. Tensioning ring; 143. Connecting rod No. 1; 144. Sliding ring; 145. Connecting rod No. 2; 146. Pressing protrusion; 147. Fixing protrusion; 15. Cleaning assembly; 150. Arc groove; 151. Mounting cylinder; 152. Cleaning scraper; 153. Chip guide; 154. Water inlet; 155. Connecting groove; 156. Water outlet; 157. Water inlet pipe; 158. 159. Water inlet pipe; 16. Fixed cylinder; 17. Drive assembly; 18. Drive motor; 19. Drive shaft; 10. Rotating shaft; 11. Transmission belt; 12. Washing assembly; 13. Water pump; 14. Drain outlet; 155. Washing nozzle; 16. Filter screen; 17. Drying section; 18. Guide rod; 29. ​​Oven; 20. Guide roller; 21. Upper air guide frame; 22. Guide groove; 23. Receiving groove; 24. Lower air guide frame; 25. Air outlet; 26. Heating tube; 27. Mounting rod; 28. Moisture-absorbing sponge. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See Figure 1 A copper foil pickling and drying apparatus includes a pickling section 1 and a drying section 2, wherein the pickling section 1 and the drying section 2 are arranged sequentially in the horizontal direction.

[0028] See Figure 1 and Figure 2 The pickling section 1 includes a processing tank, which is divided into two parts from left to right: a pickling tank 11 and a rinsing tank 12. Reversing rollers 13 are rotatably installed on the left, right and middle of the upper end of the processing tank. The pickling tank 11 is used to pickle the copper foil, and the rinsing tank 12 is used to rinse the copper foil. A tensioning component 14 is rotatably installed in the pickling tank 11, and a cleaning component 15 is rotatably installed in the rinsing tank 12. The tensioning component 14 and the cleaning component 15 are connected by a drive component 16. A rinsing component 17 is installed on the inner wall of the right side of the rinsing tank 12, and a filter screen 18 is fixedly connected to the rinsing tank 12 below the cleaning component 15.

[0029] See Figure 1The drying section 2 includes an oven 21, which is located to the right of the rinsing tank 12. Inside the oven 21, two sets of guide rollers 22 are rotatably installed. The two sets of guide rollers 22 are arranged alternately. An upper air guide frame 23 is provided above the upper set of guide rollers 22, and a lower air guide frame 24 is provided below the lower set of guide rollers 22. The left half of the upper air guide frame 23 and the left half of the lower air guide frame 24 are provided with multiple interconnected air outlets 25. The right half of the upper air guide frame 23 and the right half of the lower air guide frame 24 are provided with multiple heating tubes 26.

[0030] After pickling and rinsing, the copper foil enters the oven 21 through the feed inlet on the upper left and is wound in a zigzag pattern on the guide roller 22. Finally, it is pulled out from the discharge outlet on the lower right of the oven 21. During the movement of the copper foil inside the oven 21, the upper air guide frame 23 and the lower air guide frame 24 are connected to the external cold air fan. Cold air is blown out from the air outlet 25. Since the upper air guide frame 23 and the lower air guide frame 24 are in close contact with the front and rear inner walls of the oven 21, the cold air blown out from the air outlet 25 can only flow along the zigzag path formed by the upper air guide frame 23 and the lower air guide frame 24, that is, it flows towards the heating pipe 26. After being heated by the heating pipe 26, the temperature of the cold air rises, thereby enabling the copper foil that has been dried by cold air to be dried by hot air.

[0031] See Figure 2 The drive assembly 16 includes a drive motor 161, which is mounted on the rear side of the rinsing tank 12 via a motor mount. The output shaft of the drive motor 161 is fixedly connected to the rear end of the drive shaft 162 via a coupling. The front end of the drive shaft 162 is connected to the rinsing assembly 17. A rotating shaft 163 is rotatably mounted on the rear side of the pickling tank 11. The front end of the rotating shaft 163 is connected to the tensioning assembly 14. The rear end of the rotating shaft 163 is connected to the rear end of the drive shaft 162 via a transmission belt 164.

[0032] The drive motor 161 drives the drive shaft 162 to rotate, and the drive belt 164 causes the rotating shaft 163 to rotate as well, thereby synchronously driving the tensioning assembly 14 and the cleaning assembly 15 to rotate.

[0033] See Figure 2 and Figure 4The tensioning assembly 14 includes a tensioning shaft 141. The rear end of the tensioning shaft 141 is fixedly connected to the drive assembly 16, and the front end of the tensioning shaft 141 is rotatably connected to the pickling tank 11. Tensioning rings 142 are symmetrically sleeved on the tensioning shaft 141. A first connecting rod 143 is installed between the two tensioning rings 142. A sliding ring 144 is installed on the rear side of the rear tensioning ring 142 through a second connecting rod 145. A return spring is connected between the front side of the front tensioning ring 142 and the front inner wall of the pickling tank 11. Abutting protrusions 146 are evenly installed circumferentially on the rear side of the sliding ring 144. Fixed protrusions 147, corresponding one-to-one with the abutting protrusions 146, are evenly installed along the circumference of the sliding ring 144 on the rear inner wall of the pickling tank 11.

[0034] The tensioning shaft 141 is rotated by the drive assembly 16. During the rotation, the sliding ring 144 rotates relative to the fixed protrusion 147 with the tensioning shaft 141. The fixed protrusion 147 and the pressing protrusion 146 intermittently contact each other. When the fixed protrusion 147 and the pressing protrusion 146 contact each other, the sliding ring 144 drives the tensioning ring 142 to move forward a certain distance through the first connecting rod 143 and the second connecting rod 145. When the fixed protrusion 147 and the pressing protrusion 146 are no longer in contact, the sliding ring 144 and the tensioning ring 142 return to their original positions under the action of the return spring. This allows the tensioning ring 142 to move back and forth during the operation, thereby intermittently changing the contact position between the tensioning ring 142 and the copper foil, so that all parts of the copper foil can be effectively pickled, ensuring the comprehensiveness of the pickling.

[0035] See Figure 1 and Figure 3 The cleaning assembly 15 includes a mounting cylinder 151. The rear end of the mounting cylinder 151 is fixedly connected to the drive assembly 16, and the front end of the mounting cylinder 151 is rotatably connected to the flushing tank 12. Multiple cleaning scrapers 152 are evenly installed on the side wall of the mounting cylinder 151 along its circumference. The cleaning scraper 152 has an L-shaped cross-section. The side of the horizontal section of the cleaning scraper 152 away from the side wall of the mounting cylinder 151 is an arc surface. A chip guide 153 is installed on the side of the cleaning scraper 152 near the mounting cylinder 151. The chip guide 153 has an L-shaped cross-section. The side of the horizontal section of the chip guide 153 near the mounting cylinder 151 has a structure in which the thickness decreases from the middle to the front and rear sides, and slopes downward from the end near the vertical section of the chip guide 153 to the end away from the vertical section of the chip guide 153. The side of the vertical section of the chip guide 153 away from the vertical section of the cleaning scraper 152 has a structure in which the thickness decreases from the middle to the front and rear sides.

[0036] The drive assembly 16 drives the mounting cylinder 151 to rotate, and the mounting cylinder 151 drives the cleaning scraper head 152 to clean the oxide layer and other impurities accumulated on the surface of the copper foil. During the rotation, the end of the horizontal section of the cleaning scraper head 152 away from the vertical section first contacts the surface of the copper foil and scrapes up the impurities on the surface of the copper foil. The scraped impurities fall on the side of the horizontal section of the chip guide 153 near the mounting cylinder 151. At this time, as the mounting cylinder 151 continues to rotate, the end of the horizontal section of the cleaning scraper head 152 away from the vertical section tilts upward, and the impurities on the horizontal section of the chip guide 153 slide along the surface of the horizontal section to the vertical section, so as to prevent the impurities from falling back onto the copper foil during the rotation of the cleaning scraper head 152.

[0037] It should be noted that the front end of the cleaning scraper 152 is located on the front side of the copper foil, and the rear end of the cleaning scraper 152 is located on the rear side of the copper foil. Since the thickness of both the horizontal and vertical sections of the chip guide 153 decreases from the middle to the front and rear sides, as the cleaning scraper 152 rotates from directly below the mounting cylinder 151 to directly above the mounting cylinder 151, the impurities will slide along the horizontal or vertical sections of the chip guide 153 to the front and rear sides, and finally fall onto the filter screen 18.

[0038] See Figure 3 The mounting cylinder 151 has multiple water inlets 154 evenly distributed along its circumference on its side wall. The cleaning scraper 152 has an L-shaped connecting groove 155 inside. The chip guide 153 has water outlets 156 on both its horizontal and vertical sections that communicate with the connecting groove 155.

[0039] See Figure 3 The mounting cylinder 151 is provided with a water inlet pipe 157. The rear end of the water inlet pipe 157 is rotatably connected to the mounting cylinder 151, and the front end of the water inlet pipe 157 is fixedly connected to the rinsing tank 12 and passes through the rinsing tank 12. The middle part of the water inlet pipe 157 is connected to the fixed cylinder 159 through the water injection pipe 158. An arc-shaped groove 150 is provided on the outer wall of the fixed cylinder 159. The angle corresponding to the arc-shaped groove 150 on the circle is 90 degrees. The arc-shaped groove 150 is located on the lower left side of the fixed cylinder 159.

[0040] Connect the inlet pipe 157 to an external water supply device. The inlet pipe 157 injects clean water into the arc-shaped groove 150 through the water injection pipe 158. During the rotation of the mounting cylinder 151 driven by the drive component 16, the mounting cylinder 151 and the fixed cylinder 159 rotate relative to each other. When the connecting groove 155 rotates into the range of the arc-shaped groove 150, the clean water in the arc-shaped groove 150 is sprayed out from the outlet 156 after passing through the connecting groove 155, thereby flushing the impurities accumulated on the chip guide 153 to the front and rear sides, so as to avoid the accumulated impurities affecting the cleaning effect of the cleaning component 15.

[0041] See Figure 5Except for the water outlet 156 which is centrally located at the front and back, all other water outlets 156 are inclined. The front water outlet 156 is inclined forward, and the rear water outlet 156 is inclined backward, so as to speed up the process of the clean water washing away the impurities.

[0042] See Figure 1 The rinsing assembly 17 includes a water pump 171. A drain outlet 172 is provided on the bottom right side of the rinsing tank 12. The drain outlet 172 is connected to the water inlet of the water pump 171 through a pipe. The water outlet 156 of the water pump 171 is connected to the rinsing nozzle 173 through a pipe. The rinsing nozzle 173 is divided into two groups, which are used to rinse the upper and lower surfaces of the copper foil, respectively.

[0043] Before operation, an appropriate amount of clean water is injected into the rinsing tank 12. Then, the water pump 171 is turned on. The clean water in the rinsing tank 12 enters the water pump 171 through the drain port 172 and is sent to the rinsing nozzle 173 by the water pump 171. The rinsing nozzle 173 sprays out clean water to rinse the upper and lower surfaces of the copper foil. After rinsing, the oxide layer that falls off the surface of the copper foil will fall onto the filter screen 18 and will not mix into the clean water. This enables water recycling and reduces water costs.

[0044] See Figure 1 The upper air guide frame 23 and the lower air guide frame 24 are both installed on the guide rod 20, which is fixedly connected to the inner wall of the oven 21, by means of sliding fit. The front side wall of the oven 21 is an opening and closing door (not shown in the figure) that is rotatably connected to other parts of the oven 21.

[0045] When it is necessary to wind copper foil onto the guide roller 22, first open the door, and then pull the upper air guide frame 23 and the lower air guide frame 24 forward along the guide rod 20 to leave enough operating space inside the oven 21.

[0046] See Figure 1 Multiple mounting rods 27 are evenly installed on the inner wall of the upper end of the upper air guide frame 23, and moisture-absorbing sponges 28 are sleeved on the mounting rods 27.

[0047] During the drying process of copper foil, moisture easily condenses on the upper part of the upper air guide frame 23. The moisture-absorbing sponge 28 can absorb the moisture, preventing it from condensing into water droplets and dripping onto the copper foil, thus affecting the drying effect.

[0048] See Figure 1 and Figure 6 It should be noted that, in order to further prevent condensed water droplets from falling onto the copper foil, multiple guide grooves 231 are evenly opened on the front and back of the side wall of the upper air guide frame 23, and a receiving groove 232 is opened at the bottom of the upper air guide frame 23 to guide the water droplets condensed on the side wall of the upper air guide frame 23. The water droplets flow into the receiving groove 232 along the guide grooves 231 and will not drip onto the copper foil.

[0049] The copper foil pickling and drying apparatus provided by the present invention has been described in detail above. For those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the embodiments of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A copper foil pickling and drying apparatus, comprising a pickling section and a drying section, characterized in that: The pickling section and the drying section are distributed sequentially in the horizontal direction, left and right. The pickling section includes a treatment tank, which is divided into a pickling tank and a rinsing tank from left to right. Reversing rollers are rotatably installed on the left, right and middle of the upper end of the treatment tank. A tensioning component is rotatably installed in the pickling tank, and a cleaning component is rotatably installed in the rinsing tank. The tensioning component and the cleaning component are connected by a drive component. A rinsing component is installed on the inner wall of the right side of the rinsing tank, and a filter screen fixedly connected to the rinsing tank is installed below the cleaning component. The cleaning assembly includes a mounting cylinder, the rear end of which is fixedly connected to a drive assembly, and the front end of which is rotatably connected to a flushing tank. Multiple cleaning scrapers are evenly installed on the side wall of the mounting cylinder along its circumference. The cleaning scraper has an L-shaped cross-section, and the side of the horizontal section of the cleaning scraper away from the side wall of the mounting cylinder is an arc surface. A chip guide is installed on the side of the cleaning scraper near the mounting cylinder. The chip guide has an L-shaped cross-section, and the side of the horizontal section of the chip guide near the mounting cylinder has a structure in which the thickness decreases from the middle to the front and rear sides, and slopes downward from the end near the vertical section of the chip guide to the end away from the vertical section of the chip guide. The side of the vertical section of the chip guide away from the vertical section of the cleaning scraper has a structure in which the thickness decreases from the middle to the front and rear sides. Multiple water inlets are evenly provided on the side wall of the mounting cylinder along its circumference. The cleaning scraper head has an L-shaped connecting groove inside. Water outlets communicating with the connecting groove are provided on both the horizontal and vertical sections of the chip guide. The drying section includes an oven located to the right of the rinsing tank. Inside the oven, two sets of guide rollers are rotatably installed, arranged alternately. An upper air guide frame is installed above the upper set of guide rollers, and a lower air guide frame is installed below the lower set of guide rollers. Multiple interconnected air outlets are opened on the left half of the upper air guide frame and the right half of the lower air guide frame. Multiple heating tubes are installed on the right half of the upper air guide frame and the right half of the lower air guide frame. The cold air flows along the zigzag path formed by the upper and lower air guide frames towards the heating tube, and the cold air is heated by the heating tube to dry the copper foil that has been dried by the cold air.

2. The copper foil pickling and drying apparatus according to claim 1, characterized in that, The drive assembly includes a drive motor, which is mounted on the rear side of the rinsing tank via a motor mount. The output shaft of the drive motor is fixedly connected to the rear end of the drive shaft via a coupling. The front end of the drive shaft is connected to the rinsing assembly. A rotating shaft is rotatably mounted on the rear side of the pickling tank. The front end of the rotating shaft is connected to the tensioning assembly. The rear end of the rotating shaft is connected to the rear end of the drive shaft via a transmission belt.

3. The copper foil pickling and drying apparatus according to claim 1, characterized in that, The tensioning assembly includes a tensioning shaft, the rear end of which is fixedly connected to a drive assembly, and the front end of which is rotatably connected to a pickling tank. Tensioning rings are symmetrically fitted on the tensioning shaft, and a first connecting rod is installed between the front and rear tensioning rings. A sliding ring is installed on the rear side of the rear tensioning ring via a second connecting rod. A return spring is connected between the front side of the front tensioning ring and the inner wall of the front side of the pickling tank. Abutting protrusions are evenly installed circumferentially on the rear side of the sliding ring, and fixing protrusions corresponding to the abutting protrusions are evenly installed along the circumference of the sliding ring on the inner wall of the rear side of the pickling tank.

4. The copper foil pickling and drying apparatus according to claim 1, characterized in that, The installation cylinder is equipped with a water inlet pipe. The rear end of the water inlet pipe is rotatably connected to the installation cylinder, and the front end of the water inlet pipe is fixedly connected to the rinsing tank and passes through the rinsing tank. The middle part of the water inlet pipe is connected to the fixed cylinder through a water injection pipe. An arc-shaped groove is opened on the outer wall of the fixed cylinder, and the arc-shaped groove is located on the lower left side of the fixed cylinder.

5. The copper foil pickling and drying apparatus according to claim 1, characterized in that, The rinsing assembly includes a water pump, and a drain outlet is provided on the right side of the bottom of the rinsing tank. The drain outlet is connected to the water pump inlet through a pipe, and the water pump outlet is connected to the rinsing nozzle through a pipe. The rinsing nozzle is divided into two groups, one above the other.

6. The copper foil pickling and drying apparatus according to claim 1, characterized in that, The upper and lower air guide frames are both installed on guide rods that are fixedly connected to the inner wall of the oven via a sliding fit. The front side wall of the oven is an opening and closing door that is rotatably connected to other parts of the oven.

7. The copper foil pickling and drying apparatus according to claim 1, characterized in that, Multiple mounting rods are evenly installed on the inner wall of the upper end of the upper air guide frame, and moisture-absorbing sponges are sleeved on the mounting rods.

8. The copper foil pickling and drying apparatus according to claim 1, characterized in that, Except for the outlets located at the front and rear center, all other outlets are inclined, with the front outlets inclined forward and the rear outlets inclined backward.

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