Aluminum powder collecting apparatus and collecting method for battery foil production
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEIHAI XINGHENG NEW MATERIAL TECH CO LTD
- Filing Date
- 2023-08-15
- Publication Date
- 2026-07-14
Smart Images
Figure CN117046822B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of aluminum foil production technology, and in particular relates to an aluminum powder collection device and collection method for battery foil production. Background Technology
[0002] Whether it's an aluminum foil rolling mill or an aluminum foil slitting machine, various types of roller mechanisms are needed in production, such as: conveyor rollers, guide rollers, support rollers, drive rollers, pressure rollers, cutting rollers, tension rollers, guide rollers, support rollers, etc.
[0003] Currently, in the aluminum foil production field, most facilities have dedicated collection devices for dust removal and other operations, but there are very few devices that collect aluminum powder. For example, there are devices in the slitting equipment that collect the aluminum powder generated during slitting.
[0004] Whether it's an aluminum foil rolling mill or an aluminum foil slitting machine, the materials of the rubber rollers and guide rollers, along with the static electricity generated by friction, will attract some aluminum shavings and powder produced during operation. These particles, carried and adhered to the guide rollers, easily form pressure points on the plate surface. Since these cannot be cleaned during equipment operation, this seriously affects the quality of the aluminum foil products. Furthermore, the inability to effectively and promptly recover the aluminum powder also causes environmental problems. Once aluminum powder adheres to the rubber rollers, it is almost impossible to clean them online. Even with methods like static eliminators, the uneven charge distribution on the roller surface during continuous rotation and friction means that the charge released by the static eliminator cannot be evenly distributed across the roller surface due to the high-speed rotation, resulting in ineffective elimination of static adsorption. Simultaneously, the charge released by the static eliminator may interfere with the rotation of the rubber rollers, affecting the normal operation of the equipment. Summary of the Invention
[0005] In view of the technical problems existing in the background art, the present invention provides an aluminum powder collection device and collection method for battery foil production.
[0006] To achieve the above objectives, the technical solution provided by the present invention is as follows:
[0007] A battery foil production aluminum powder collecting device includes a fixed shaft, a moving shaft, an outer cylinder, a guide roller assembly, and a collecting box. The moving shaft includes rotating rings at both ends and connecting blocks integrally connected to the two rotating rings. Two arc-shaped grooves are evenly distributed around the circumference of each rotating ring, and a central hole is provided inside the rotating ring. The grooves extend arc-shapedly from the outer wall of the rotating ring towards the central hole. The two rotating rings are rotatably mounted on the fixed shaft. The guide roller assembly includes a slide block and guide rollers rotatably mounted on the slide block. A sliding shaft is provided on one side of the slide block. There are two guide roller assemblies, including a working roller and a spare roller. The outer cylinder has two symmetrical guide grooves, the sliding shaft is slidably disposed in the groove, and the sliding block is slidably disposed in the guide groove; the fixed shaft has a hollow collection cavity inside, the upper end of the fixed shaft has an opening, and the lower end has a clearance opening; the bottom end of the guide roller has a collection box, the bottom end of the collection box has a discharge port, and the discharge port has an opening and closing mechanism for controlling the opening and closing of the discharge port; when the moving shaft rotates relative to the outer cylinder, it can drive the two guide roller assemblies to move towards the fixed shaft and dock with the opening and the clearance opening respectively.
[0008] Optionally, the upper end of the collection box is provided with a conical first cavity, the bottom side of the collection box is provided with a conical docking part, and the inner cavity of the docking part is provided with a rhomboid second cavity, and the first cavity and the second cavity are connected.
[0009] Optionally, the opening and closing mechanism includes two arc-shaped elastic steel sheets symmetrically arranged on the inner wall of the discharge port of the docking part, the two elastic steel sheets bending and extending in a direction away from each other; a locking screw is provided at the bottom of the docking part, and a spring is provided at the end of the screw, the spring is set close to the elastic steel sheets, so that the two elastic steel sheets are pressed tightly against each other to close the discharge port; a filter cylinder is provided at the middle position of the opening, the collection box can move towards the opening so that the two elastic steel sheets enter the opening and are squeezed away from each other by the filter cylinder to open the discharge port, and another collection box is accommodated in the clearance opening.
[0010] Optionally, the inner end of the opening is provided with an annular inclined surface, and when the elastic steel sheet is squeezed by the filter cylinder, the end of the elastic steel sheet is closely attached to the inclined surface.
[0011] Optionally, a recycling box is fixed to the bottom end of the fixed shaft, and the upper end of the recycling box is set close to the outer wall of the outer cylinder; the recycling box is provided with a third cavity and a fourth cavity that are symmetrical and connected to each other. The third cavity and the fourth cavity are triangular in shape. Several scraping rollers with different diameters are provided on the inner walls of both sides of the third cavity; when the sliding shaft is at the outer end of the slide groove, the corresponding guide roller assembly extends from the guide groove to the outside of the outer cylinder. The upper guide roller assembly directly contacts the aluminum foil for conveying the aluminum foil, and the lower guide roller assembly does not contact the aluminum foil and extends into the recycling box as a spare roller, which is close to the scraping roller; the fourth cavity is connected to the recycling cavity inside the fixed shaft, and one end of the fixed shaft is provided with an air hole that communicates with the recycling cavity. The suction pipe of the suction device is connected to the air hole.
[0012] Optionally, a gear is rotatably provided at one end of the outer cylinder, and fixed seats are symmetrically provided on the outer wall of the outer cylinder. A rotating shaft is provided inside the fixed seat. A gear is connected to one end of the rotating shaft and meshes with a gear. A transmission roller is provided at the other end of the rotating shaft. The transmission roller is positioned directly opposite the guide groove. The guide roller can extend to the outside of the outer cylinder and press against the transmission roller.
[0013] Optionally, a gear three is provided at the other end of the outer cylinder, and a gear four is provided at one end of the moving shaft. The gear three and the gear four are respectively connected to the drive mechanism for transmission.
[0014] A method for collecting aluminum powder in battery foil production includes the following steps: During the aluminum foil conveying process by guide rollers, the outer cylinder remains stationary. Then, the rotating shaft is periodically controlled to drive the collection box to move and engage with the opening of the fixed shaft, allowing the aluminum powder collected inside the collection box to be recycled into the collection cavity. A suction device is then activated to extract aluminum powder from the collection cavity, collection box, and the surface of the guide rollers. When the upper guide roller has been continuously operating for a fixed period, a spare guide roller needs to be replaced. First, the outer cylinder remains stationary. Then, the rotating shaft is controlled to drive the collection box inwards, so that the guide roller assembly is completely housed in the guide groove, but the bottom of the collection box is located outside the fixed shaft. Then, the outer cylinder and rotating shaft are controlled to rotate synchronously, swapping the positions of the working roller and the spare roller to switch to a new spare roller for conveying aluminum foil. The replaced working roller is then cleaned of surface-adhered aluminum powder by a scraping roller before being put into use.
[0015] The present invention has the following advantages and beneficial effects:
[0016] In this invention, the outer cylinder remains stationary during the aluminum foil conveying process of the guide roller. The rotating shaft is periodically controlled to drive the collection box to move and engage with the opening of the fixed shaft. This allows the aluminum powder collected inside the collection box to be recycled into the collection cavity. A suction device is then activated to remove the aluminum powder from the collection cavity, collection box, and the surface of the guide roller. This design effectively removes some aluminum powder from the roller surface, extending its service life. After the guide roller has been continuously operating for a certain period, the outer cylinder and rotating shaft are controlled to rotate synchronously to switch to a new guide roller for conveying aluminum foil. The replaced guide roller is then cleaned of adhering aluminum powder by a cleaning mechanism before being put into use. This invention, through its unique structural design, allows for online collection of aluminum powder from the working guide roller, resulting in stable collection and greater environmental friendliness. It also allows for online guide roller replacement, ensuring the working guide roller surface remains sufficiently clean and free of adhering aluminum powder, thus guaranteeing the quality of the aluminum powder conveying process.
[0017] Second, further, the fixed shaft is designed with an opening at the upper end and a clearance opening at the lower end. When the moving shaft rotates and drives the two guide rollers to move, the working roller moves into the opening to collect aluminum powder; while the spare roller moves into the clearance opening to be stored, avoiding collision and interference with the fixed shaft. Attached Figure Description
[0018] Figure 1 This is a first structural diagram of the aluminum powder collection device provided by the present invention;
[0019] Figure 2 for Figure 1 A magnified view of a portion of point a;
[0020] Figure 3 This is a second structural diagram of the aluminum powder collection device provided by the present invention;
[0021] Figure 4 for Figure 3 A magnified view of a section at point b in the middle;
[0022] Figure 5 A front view of the aluminum powder collection device provided by the present invention;
[0023] Figure 6 for Figure 5 A cross-sectional view along the AA direction;
[0024] Figure 7 for Figure 6 A magnified view of a section at point c in the middle;
[0025] Figure 8 for Figure 6 A schematic diagram showing the middle guide roller assembly housed inside the outer cylinder but not connected to the fixed shaft;
[0026] Figure 9 for Figure 8A schematic diagram showing the middle guide roller assembly housed inside the outer cylinder and connected to the fixed shaft;
[0027] Figure 10 for Figure 9 A magnified view of a portion at point d in the middle;
[0028] Figure 11 for Figure 10 A magnified view of a section at point e in the middle;
[0029] Figure 12 Another structural diagram of the aluminum powder collection device provided by the present invention;
[0030] Figure 13 for Figure 11 The front view;
[0031] Figure 14 for Figure 13 A cross-sectional view along the BB direction;
[0032] Figure 15 A structural diagram of the fixed axis provided by the present invention;
[0033] Figure 16 The structural diagram of the moving shaft provided by the present invention;
[0034] Figure 17 The structural diagram of the outer cylinder provided by this invention;
[0035] Figure 18 This is a structural diagram of the guide roller assembly provided by the present invention;
[0036] Icons: 1-Fixed axis, 11-Opening, 12-Avoidance opening, 13-Collection chamber, 14-Inclined surface, 15-Air hole, 2-Moving shaft, 21-Rotating ring, 22-Slide groove, 23-Center hole, 24-Connecting block, 25-Notch, 26-Gear four, 3-Outer cylinder, 31-Guide groove, 32-Gear three, 33-Gear one, 34-Fixed seat, 35-Gear two, 36-Rotating shaft, 37-Transmission roller, 4-Guide roller, 41-Slide seat, 42-Sliding shaft, 5-Collection box, 51-Diamond joint, 52-First chamber, 53-Second chamber, 54-Mounting block, 55-Locking screw, 56-Spring, 57-Elastic steel sheet, 7-Filter cartridge, 71-Support rod, 6-Recovery box, 61-Fixed block, 62-Third chamber, 63-Fourth chamber, 8-Scraping roller. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.
[0038] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0039] Example 1
[0040] like Figures 1-11 As shown, an aluminum powder collection device for battery foil production includes components such as a fixed shaft 1, a moving shaft 2, an outer cylinder 3, a guide roller assembly, and a collection box 5.
[0041] like Figure 14 and Figure 15 As shown, a hollow collection cavity 13 is provided inside the fixed shaft 1. The upper end of the fixed shaft 1 is provided with an opening 11 that communicates with the collection cavity 13, and the lower end is provided with a clearance opening 12.
[0042] like Figure 16 As shown, the moving shaft 2 includes two circular rotating rings 21 at both ends and two connecting blocks 24 integrally connected to the two rotating rings 21. The two connecting blocks 24 are open, forming a notch 25. A central hole 23 is provided inside the rotating ring 21; two arc-shaped grooves 22 are evenly distributed around the circumference of the rotating ring 21, with the two ends of the grooves 22 located on central circles of different diameters, i.e., the grooves 22 extend arc-shapedly from the outer wall of the rotating ring 21 towards the central hole 23; furthermore, the positions of the grooves 22 and the connecting blocks 24 are staggered (e.g., ...). Figure 6 As shown in the diagram, this ensures that the connecting block 24 does not interfere with the guide roller assembly when the rotating shaft 2 rotates. A gear 26 is provided on the outer side of one of the rotating rings 21.
[0043] like Figure 17 As shown, two elongated guide grooves 31 are symmetrically arranged on the outer cylinder 3, and the guide grooves 31 are arranged through each other; one end of the outer cylinder 3 is fixed with a gear 32, and the other end is rotatably arranged with a gear 33 on the outer wall; two fixed seats 34 are symmetrically arranged on the outer wall of the outer cylinder 3, and a rotating shaft 36 is arranged inside the fixed seat 34; one end of the rotating shaft 36 is connected to a gear 35 that meshes with the gear 33; the other end of the rotating shaft 36 is provided with a transmission roller 37, which is positioned directly opposite the guide groove 31.
[0044] like Figure 18 As shown, the guide roller assembly includes a slide block 41 and a guide roller 4 rotatably mounted on the slide block 41. A sliding shaft 42 is provided on one side of the slide block 41, and a collection box 5 is provided at the bottom of the two slide blocks 41. The upper end of the collection box 5 is disposed close to the surface of the guide roller 4.
[0045] like Figure 1-6As shown, the collection device of the present invention is assembled as follows:
[0046] First: The fixed axis 1 is fixed and cannot rotate. The opening 11 of the fixed axis 1 is set facing upwards, while the clearance opening 12 is set facing downwards.
[0047] Second: The rotating rings 21 at both ends of the moving shaft 2 are rotatably mounted on the outer wall of the fixed shaft 1 through the central hole 23.
[0048] Third: The outer cylinder 3 is rotatably mounted on the outer wall of the moving shaft 2. Then, the guide roller assembly (sliding block 41 sliding against the guide groove 31) is aligned with the guide groove 31 of the outer cylinder 3 and slidably inserted, so that the sliding shaft 42 is engaged in the slide groove 22. For ease of installation, the sliding shaft 42 can be configured as an elastically compressible locking shaft. During installation, the sliding shaft 42 is compressed against the inner end face of the rotating ring 21 until it slides into the slide groove 22 and then elastically resets and locks into the slide groove 22. Of course, this is only one preferred design method. Specifically, a more efficient installation operation can be designed accordingly.
[0049] Fourth: After the outer cylinder 3, moving shaft 2, fixed shaft 1, and guide roller assembly are installed, the outer cylinder 3 and moving shaft 2 can be rotated to adjust the position of the guide roller assembly so that the guide roller assembly can be fully extended outside the outer cylinder 3 or stored inside the outer cylinder 3.
[0050] In this invention, the outer cylinder 3 and the moving shaft 2 are driven by different driving mechanisms, such as motor drive; the motor needs to be equipped with a brake device to automatically lock when the machine stops to prevent rotation.
[0051] like Figure 6 As shown, a hollow collecting cavity 13 is provided inside the fixed shaft 1. An opening 11 communicating with the collecting cavity 13 is provided at the upper end of the fixed shaft 1, and a clearance opening 12 is provided at the lower end. The angle of the clearance opening 12 is smaller and the depth is greater than that of the opening 11, so as to accommodate the guide roller assembly. A collecting box 5 is provided at the bottom end of the guide roller 4, and a discharge port is provided at the bottom end of the collecting box 5. An opening and closing mechanism for controlling the opening and closing of the discharge port is provided on the discharge port. When the outer cylinder 3 is fixed and the moving shaft 2 rotates clockwise relative to the outer cylinder 3, it can drive the upper collecting box 5 to move towards the opening 11 and dock with the opening 11; while the lower guide roller assembly is housed in the clearance opening 12.
[0052] The collection device of the present invention can be used in two ways: the two guide rollers 4 can be distinguished, one of which is in contact with the aluminum foil and conveys the aluminum foil as a working roller, while the other is in an idle state as a spare roller.
[0053] In the first scenario, the working roller is cleaned and aluminum powder is recovered online: such as... Figure 6As shown, at this time, the sliding shaft 42 is at the outer end of the slide groove 22, and the corresponding guide roller assembly (guide roller 4, etc.) extends from the guide groove 31 to the outside of the outer cylinder 3. The upper guide roller 4 directly contacts the aluminum foil for conveying the aluminum foil, while the lower guide roller 4 does not contact the aluminum foil and serves as a spare roller; Figure 9 , Figure 10 As shown, after the upper guide roller 4 (working roller) has been working for a certain period of time, a certain amount of aluminum powder has been collected inside the collection box 5. Online cleaning of the aluminum powder in the collection box 5 is required. At this time, the outer cylinder 3 remains stationary, and the control shaft 2 rotates clockwise. The guide roller assembly retracts into the outer cylinder 3 until the upper guide roller assembly aligns with the opening 11. Then, the discharge port is opened through the opening and closing mechanism at the bottom of the collection box 5, recovering the aluminum powder inside the collection box 5 into the collection cavity 13. Simultaneously, the lower guide roller assembly is stored inside the clearance opening 12. To avoid affecting the normal conveying of aluminum foil, this method of online aluminum powder cleaning can be used in conjunction with tension rollers. The tension rollers are positioned on the front and rear sides of the device. When cleaning is required, the tension rollers tension the aluminum foil, causing the working rollers of the device to gradually withdraw from the working state, allowing for online cleaning and recovery of aluminum powder. After cleaning, the working rollers and tension rollers are reset. This method involves online cleaning of the working rollers, which requires strict time control. The working rollers must extend and retract within a very short time; that is, after briefly detaching from the aluminum foil, they must immediately return to their original position and re-adhere to the aluminum foil for transmission, without affecting the aluminum foil conveying. Therefore, to efficiently recover aluminum powder within the brief opening time of the discharge port, a suction device is needed.
[0054] In the second scenario, the work roll is replaced with a spare roll online: such as... Figure 6 As shown, at this time, the sliding shaft 42 is at the outer end of the slide groove 22, and the corresponding guide roller assembly (guide roller 4, etc.) extends from the guide groove 31 to the outside of the outer cylinder 3. The upper guide roller assembly directly contacts the aluminum foil for conveying the aluminum foil, while the lower guide roller assembly does not contact the aluminum foil and serves as a spare roller. After the working roller has been working continuously for a certain period of time, a small amount of aluminum powder inevitably adheres to its surface. Most of the aluminum powder adheres due to electrostatic adsorption. In this case, in order to ensure the quality of the aluminum foil board surface, the working roller needs to be replaced online. At this time, as shown... Figure 8 As shown, firstly, the outer cylinder 3 remains stationary, and the control shaft 2 rotates clockwise. The guide roller assembly retracts into the outer cylinder 3. This is to ensure that when replacing the work roller, it is retracted first, releasing the work roller from contact with the aluminum foil and preventing scratches caused by directly replacing the work roller. The guide roller assembly cannot be fully retracted, meaning it cannot contact the fixed shaft 1; that is, the bottom of the collection box 5 is not within the circumference of the fixed shaft 1, to avoid interference (e.g., ...). Figure 8(As shown in the diagram). Then, control the outer cylinder 3 and the moving shaft 2 to move synchronously, provided that they rotate at the same speed and in the same direction, thereby rotating as a whole to switch the positions of the working roller and the spare roller, realizing the online replacement function. Then, the outer cylinder 3 is fixed, and the moving shaft 2 is controlled to rotate again, so that the spare roller extends out of the outer cylinder 3 and comes into contact with the aluminum foil for transmission. The replaced working roller can then be cleaned offline using other cleaning mechanisms. Similarly, in order not to affect the normal conveying of aluminum foil, a tensioning roller can be used in conjunction. The tensioning roller is set on the front and rear sides of this device. When it is necessary to replace the working roller, the tensioning roller tensions the aluminum foil, so that the working roller of this device gradually exits the working state, and then the working roller can be replaced online. After replacement, the guide roller 4 and the tensioning roller can be reset.
[0055] like Figure 6 As shown, the upper end of the collection box 5 is provided with a conical first cavity 52, one end of the guide roller 4 is located inside the first cavity 52, and the bottom side of the collection box 5 is provided with a conical docking part 51. The inner cavity of the docking part 51 is provided with a rhomboid second cavity 53, and the first cavity 52 and the second cavity 53 are connected. This design can effectively collect aluminum powder while preventing aluminum powder from overflowing, thus ensuring the collection effect.
[0056] The opening and closing mechanism is further designed in this invention.
[0057] like Figure 6 , 7 As shown in Figures 9-11, the opening and closing mechanism includes two arc-shaped elastic steel sheets 57 symmetrically arranged on the inner wall of the discharge port of the docking part 51. To enhance the sealing effect, a sealing layer can be provided on the inner wall where the elastic steel sheets 57 are in contact with each other. The two elastic steel sheets 57 bend and extend in a direction away from each other. A mounting block 54 is provided at the bottom of the docking part 51. A locking screw 55 is threaded onto the mounting block 54. A spring 56 is provided at the end of the screw. The spring 56 is set close to the arc-shaped outer wall of the elastic steel sheet 57. By rotating the locking screw 55, the two elastic steel sheets 57 are pressed tightly against each other to close the discharge port (e.g., Figure 7 (As shown). A filter cylinder 7 is provided at the middle position of the opening 11. The filter cylinder 7 is arranged laterally along the length of the opening 11. A support rod 71 is provided at the bottom end of the filter cylinder 7, and the support rod 71 is fixed in the inner cavity of the fixed shaft 1. When the outer cylinder 3 is fixed and the moving shaft 2 rotates clockwise, the collection box 5 moves towards the opening 11, causing the two elastic steel sheets 57 to enter the opening 11 and be squeezed apart by the filter cylinder 7 to open the discharge port. The other collection box 5 is accommodated in the clearance opening 12 (as shown). Figure 10 , 11(As shown). After the discharge port is opened, the aluminum powder inside the collection box 5 enters the collection chamber 13 through the filter holes of the filter cylinder 7 for collection; when the collection box 5 moves away from the opening 11, the elastic steel sheet 57 disengages from the filter cylinder 7 and automatically resets to close the discharge port. This design can automatically open and close the discharge port, and the structure is ingenious.
[0058] like Figure 11 As shown, furthermore, an annular inclined surface 14 is provided at the inner end of the opening 11. When the elastic steel sheet 57 is squeezed by the filter cartridge 7, the end of the elastic steel sheet 57 is tightly attached to the inclined surface 14. This design allows the elastic steel sheet 57 to seal the perimeter of the opening 11 during material discharge, preventing aluminum powder from overflowing into the inner cavity of the moving shaft 2 through the gaps, thereby enhancing the aluminum powder collection effect and further improving environmental protection. When the elastic steel sheet 57 leaves the opening 11, the end of the elastic steel sheet 57 is blocked by the inclined surface 14, which forces the elastic steel sheet 57 to move relative to each other and form a sealed state, sealing the discharge port and smoothly detaching from the inclined surface 14.
[0059] Furthermore, one end of the fixed shaft 1 is provided with an air hole 15 communicating with the recovery chamber, and the suction pipe of the suction device is connected to the air hole 15. When the discharge port of the collection box 5 is opened, the suction device is started simultaneously to suck away and recover the aluminum powder inside the collection box 5 and the aluminum powder collected inside the collection chamber 13. As the collection box 5 moves and connects with the opening 11, the first chamber 52, the second chamber 53 and the collection chamber 13 are interconnected. At this time, the suction device can be started to suck up the surface of the guide roller 4, removing some of the aluminum powder adhering to the surface of the guide roller 4, thereby extending the service life of the working roller. Since the online cleaning of the working roller requires strict time control, the working roller must achieve telescopic movement in a very short time, that is, after briefly separating from the aluminum foil, it must immediately return to its original position and closely adhere to the aluminum foil. Therefore, a suction device is set up to efficiently suck up and recover aluminum powder during the short opening time of the discharge port.
[0060] Example 2
[0061] The replaced work roller has aluminum powder adhering to its surface due to electrostatic adsorption, which is difficult to remove. In order to clean the replaced work roller and remove the aluminum powder adhering to the surface of the guide roller 4, so that the two guide rollers 4 can be used alternately, the guide roller assembly can be replaced online without stopping the equipment. Based on implementation 1, further optimization design is carried out.
[0062] like Figure 12-14 As shown, a recycling box 6 is fixed to the bottom of the fixed shaft 1, and the two ends of the recycling box 6 are connected to the fixed shaft 1 through fixing blocks 61. The fixing block 61 has a hollow flow channel inside that communicates with the recycling box 6, and one end of the flow channel communicates with the internal air hole 15 of the fixed shaft 1. The upper end of the recycling box 6 is set close to the outer wall of the outer cylinder 3 to ensure that aluminum powder does not leak to the outside of the equipment when cleaning the guide roller 4, thus ensuring environmental protection.
[0063] like Figure 14 As shown, the recycling bin 6 has two symmetrical and interconnected third cavities 62 and fourth cavities 63, which are triangular in shape. Several scraping rollers 8 of different diameters are arranged on the inner walls of both sides of the third cavity 62. When the sliding shaft 42 is at the outer end of the slide groove 22, the corresponding guide roller assembly extends from the guide groove 31 to the outside of the outer cylinder 3. The upper guide roller assembly directly contacts the aluminum foil for conveying it, while the lower guide roller assembly does not contact the aluminum foil and serves as a spare roller extending into the recycling bin 6, closely adhering to the scraping rollers 8. All scraping rollers 8 are arranged close to the surface of the guide rollers 4 (spare rollers). The scraping rollers 8 are detachably connected; they can be fixed to the inner wall or rotatable. One end of the fixed shaft 1 has an air hole 15 communicating with the recycling cavity. The fourth cavity 63 communicates with the air hole 15 inside the fixed shaft 1, and the suction pipe of the suction device is connected to the air hole 15. When the suction device is activated, it can simultaneously suction the collection box 5, the collection cavity 13, and the recovery box 6, ensuring collection efficiency. This design allows for the online suction and recovery of aluminum powder from the working guide roller 4, as well as from the replaced guide roller 4, thus achieving the function of having one working roller and one spare roller.
[0064] Furthermore, in order to control the rotation and cleaning of the replaced guide roller 4, further design was made.
[0065] like Figure 2 , Figure 14 As shown, a gear 33 is rotatably mounted on one end of the outer cylinder 3. A fixed seat 34 is symmetrically arranged on the outer wall of the outer cylinder 3. A rotating shaft 36 is housed within the fixed seat 34. One end of the rotating shaft 36 is connected to a gear 35 that meshes with the gear 33. The other end of the rotating shaft 36 is equipped with a transmission roller 37, which is positioned directly opposite the guide groove 31. The guide roller 4 can extend to the outside of the outer cylinder 3 and press against the transmission roller 37. This means the guide roller 4 can be controlled to extend, allowing the upper guide roller 4 to contact the aluminum foil. The aluminum foil drives the upper guide roller 4 to rotate, which in turn drives the upper transmission roller 37, which in turn drives the upper gear 35, which in turn drives the gear 33. Ultimately, this linkage drives the lower guide roller 4 to rotate, thus achieving cleaning by rotating the replaced guide roller 4 without power. After cleaning, the guide roller 4 can be retracted appropriately so that it no longer contacts the transmission roller 37. This design allows for efficient use of the working rollers for transmission, which in turn drives the replaced guide rollers to move, thus enabling cleaning operations.
[0066] Furthermore, a gear 32 is provided at the other end of the outer cylinder 3, and a gear 4 26 is provided at one end of the moving shaft 2. The gear 32 and the gear 4 26 are respectively connected to the drive mechanism for transmission.
[0067] A method for collecting aluminum powder for battery foil production includes the following steps:
[0068] S1, as Figure 6 As shown, the control guide roller 4 extends to the outside of the outer cylinder 3, but the guide roller 4 does not contact the drive roller 37. The upper guide roller 4 contacts the aluminum foil conveyor, while the lower guide roller 4 is a clean, spare roller.
[0069] S2, as Figure 9 , Figure 10 As shown, during the process of the guide roller 4 conveying aluminum foil, the outer cylinder 3 is fixed and then the moving shaft 2 is periodically controlled to rotate, driving the collection box 5 to move and engage with the opening 11 of the fixed shaft 1, so that the aluminum powder collected inside the collection box 5 can be recycled into the collection cavity 13, and the suction device is turned on to remove the aluminum powder from the surface of the collection cavity 13, the collection box 5 and the guide roller 4.
[0070] S3, after the upper guide roller 4 has been continuously operating for a fixed period, a spare guide roller 4 needs to be replaced. For example... Figure 8 As shown, firstly, the outer cylinder 3 is fixed, and then the rotating shaft 2 is controlled to rotate, driving the collection box 5 to move inward so that the guide roller assembly is completely housed in the guide groove 31. However, the bottom end of the collection box 5 is located outside the fixed shaft 1 to avoid interference. Then, the outer cylinder 3 and the rotating shaft 2 are controlled to rotate synchronously, and the positions of the working roller and the spare roller are swapped. Then, the outer cylinder 3 is fixed, and the rotating shaft 2 is driven to rotate, causing the guide roller assembly to extend out of the guide groove 31. The new guide roller 4 at the upper end is in close contact with the aluminum foil and the transmission roller 37 for conveying. The replaced guide roller 4 is in close contact with the transmission roller 37 and the scraping roller 8 to remove aluminum powder. The guide roller 4 at the lower end becomes a spare roller after the aluminum powder is removed. After cleaning, the guide roller 4 is appropriately controlled to retract inward to release the contact between the transmission roller 37 and the guide roller 4, but the working roller and the aluminum foil must not be separated.
[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. An aluminum powder collecting device for battery foil production, comprising a fixed shaft, a moving shaft, an outer cylinder, a guide roller assembly, and a collecting box, characterized in that: The moving shaft includes rotating rings at both ends and a connecting block integrally connected to the two rotating rings. Two arc-shaped sliding grooves are evenly distributed around the circumference of the rotating rings. A central hole is provided inside the rotating rings. The sliding grooves extend arc-shapedly from the outer wall of the rotating rings toward the central hole. The two rotating rings are rotatably mounted on the fixed shaft. The guide roller assembly includes a slide block and a guide roller rotatably mounted on the slide block. A sliding shaft is provided on one side of the slide block. There are two guide roller assemblies, including a working roller and a spare roller. Two guide grooves are symmetrically arranged on the outer cylinder. The sliding shaft is slidably mounted in the slide groove, and the slide block is slidably mounted in the guide groove. The fixed shaft has a hollow collecting cavity inside, with an opening at the upper end and a clearance opening at the lower end. A collecting box is located at the bottom of the guide roller, with a discharge port at the bottom of the collecting box, and an opening / closing mechanism is provided on the discharge port to control its opening and closing. When the moving shaft rotates relative to the outer cylinder, it can drive the two guide roller assemblies to move towards the fixed shaft and engage with the opening and clearance opening respectively. With the outer cylinder fixed in place, the control shaft rotates clockwise, and the guide roller assembly retracts into the outer cylinder until the upper guide roller assembly connects with the opening. Then, the discharge port is opened by the opening and closing mechanism at the bottom of the collection box, and the aluminum powder inside the collection box is recycled into the collection chamber. The guide roller assembly is completely housed in the guide groove, but the bottom of the collection box is located outside the fixed shaft. The outer cylinder and the moving shaft rotate synchronously to switch the positions of the working roller and the spare roller. Then, the outer cylinder is fixed, and the moving shaft is rotated again to make the spare roller extend out of the outer cylinder and fit with the aluminum foil for transmission. The bottom end of the fixed shaft is fixed with a recycling box, and the upper end of the recycling box is set close to the outer wall of the outer cylinder; the inside of the recycling box is provided with a third cavity and a fourth cavity that are symmetrical and connected to each other. The third cavity and the fourth cavity are triangular in shape, and several scraping rollers with different diameters are provided on the inner walls of both sides of the third cavity. When the sliding shaft is at the outer end of the chute, the corresponding guide roller assembly extends from the guide groove to the outside of the outer cylinder. The upper guide roller assembly directly contacts the aluminum foil for conveying the aluminum foil, while the lower guide roller assembly does not contact the aluminum foil and serves as a spare roller extending into the inside of the recycling box to be in close contact with the scraping roller. The fourth cavity is connected to the recycling cavity inside the fixed shaft. One end of the fixed shaft is provided with an air hole that communicates with the recycling cavity, and the suction pipe of the suction device is connected to the air hole.
2. The aluminum powder collection device for battery foil production according to claim 1, characterized in that: The upper end of the collection box is provided with a conical first cavity, and the bottom side of the collection box is provided with a conical docking part. The inner cavity of the docking part is provided with a rhomboid second cavity, and the first cavity and the second cavity are connected.
3. The aluminum powder collection device for battery foil production according to claim 2, characterized in that: The opening and closing mechanism includes two arc-shaped elastic steel sheets symmetrically arranged on the inner wall of the discharge port of the docking part. The two elastic steel sheets bend and extend in a direction away from each other. A locking screw is provided at the bottom of the docking part, and a spring is provided at the end of the screw. The spring is set close to the elastic steel sheets, so that the two elastic steel sheets are pressed tightly against each other to close the discharge port. A filter cylinder is provided in the middle of the opening. The collection box can move towards the opening so that the two elastic steel sheets enter the opening and are squeezed away from each other by the filter cylinder to open the discharge port, and another collection box is accommodated in the clearance opening.
4. The aluminum powder collection device for battery foil production according to claim 3, characterized in that: The inner end of the opening is provided with an annular inclined surface. When the elastic steel sheet is squeezed by the filter cylinder, the end of the elastic steel sheet is tightly attached to the inclined surface.
5. The aluminum powder collection device for battery foil production according to claim 1, characterized in that: One end of the outer cylinder is rotatably equipped with a gear, and fixed seats are symmetrically arranged on the outer wall of the outer cylinder. A rotating shaft is arranged inside the fixed seat. One end of the rotating shaft is connected to a gear that meshes with the gear. A transmission roller is arranged at the other end of the rotating shaft. The transmission roller is positioned directly opposite the guide groove. The guide roller can extend to the outside of the outer cylinder and press against the transmission roller.
6. The aluminum powder collection device for battery foil production according to claim 5, characterized in that: The outer cylinder is provided with a third gear at one end, and the drive shaft is provided with a fourth gear at one end. The third gear and the fourth gear are respectively connected to the drive mechanism for transmission.
7. A collection method using the aluminum powder collecting device according to any one of claims 1-6, characterized in that: During the aluminum foil conveying process of the guide roller, the outer cylinder remains stationary. Then, the rotating shaft is periodically controlled to drive the collection box to move and engage with the opening of the fixed shaft, so that the aluminum powder collected inside the collection box is recovered into the collection cavity. The suction device is then activated to absorb the aluminum powder from the collection cavity, the collection box, and the surface of the guide roller. When the upper guide roller has been continuously working for a fixed period, a spare guide roller needs to be replaced. First, the outer cylinder remains stationary. Then, the rotating shaft is controlled to drive the collection box to move inward so that the guide roller assembly is completely housed in the guide groove, but the bottom of the collection box is located outside the fixed shaft. Then, the outer cylinder and the rotating shaft are controlled to rotate synchronously to swap the positions of the working roller and the spare roller, so that a new spare roller can be used to convey aluminum foil. The replaced working roller is then cleaned of the aluminum powder adhering to its surface by a scraping roller before being put into use.