Pole piece turn-back tape conveying mechanism and coating machine

Abstract

The utility model relates to the technical field of pole piece coating, and discloses a pole piece turn-back tape conveying mechanism and a coating machine, the pole piece turn-back tape conveying mechanism comprises an air floating roller, the middle part of the air floating roller is provided with a cavity, the outer side surface of the air floating roller is provided with a plurality of blowing holes, and each blowing hole is respectively communicated with the cavity; the air blocking module is arranged in the cavity, and an air chamber used for air circulation is formed in the cavity in a spaced mode; the choke module is used for adjusting the size of the air chamber; and the air blowing assembly communicates with the air chamber and is used for introducing air into the air chamber, so that the air blowing holes communicating with the air chamber blow out positive-pressure airflow outwards. The coating machine provided by the utility model comprises the pole piece turn-back tape conveying mechanism. The air suspension device has the technical effect of enhancing the air suspension effect so as to adapt to turn-back tape walking of pole pieces with different models and breadths.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode coating, and in particular relates to an electrode folding belt conveyor mechanism and a coating machine. Background Art

[0002] The pole piece is a key part of lithium batteries for storing and releasing electrical energy. Its production process mainly involves steps such as slurry preparation, coating, rolling and slitting. Among them, pole piece coating refers to the process of evenly coating the slurry prepared from positive or negative electrode active materials, conductive agents, adhesives and solvents on the foil, and then drying the slurry-coated foil in an oven. At present, pole pieces can be coated using a folding coater. The folding coater coats the slurry on the surface of the foil. The foil coated with the slurry needs to be baked twice, that is, after the pole piece is baked once, it is returned to the oven for a second baking to fully remove the solvent in the slurry and ensure the strong bonding between the slurry and the foil after solidification.

[0003] In the related technology, the electrode can be bent 180° through a return conveyor mechanism to return to the oven. The existing return conveyor mechanism includes an air flotation roller. The electrode passes around two air flotation rollers to achieve a 180° bend conveyor. The end face of the air flotation roller along the axial direction is provided with an air inlet, and the roller surface of the air flotation roller is provided with an air outlet. The air flotation roller allows gas to be introduced into the air inlet and blows out air flow at the air outlet. The air flow lifts the electrode, and the electrode can achieve non-contact bending conveyor in a suspended state.

[0004] However, the air float roller cannot adapt to pole pieces of different widths. When the width of the pole piece is smaller than the length of the air float roller, the air pressure on both sides of the air float roller will overflow and be lost, affecting the stability of the pole piece during the return tape process. Utility Model Content

[0005] In order to solve the shortcomings of the existing technology, the utility model provides a pole piece return belt mechanism and a coating machine. The size of the air chamber in the flotation roller is adjusted by the wind blocking module, and the air flow blown out by the flotation roller is concentrated, which is beneficial to enhance the air suspension effect of the flotation roller and reduce the air pressure overflow loss to adapt to pole pieces of different models and widths.

[0006] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0007] In the first aspect, the utility model provides a pole piece folding and conveying mechanism including an air flotation roller, a cavity is opened in the middle of the air flotation roller, and a plurality of blowing holes are opened on the outer surface of the air flotation roller, and each blowing hole is connected with the cavity respectively; a wind blocking module is arranged in the cavity, and a wind chamber for gas circulation is separated in the cavity, and the wind blocking module is used to adjust the size of the wind chamber; and an air blowing component is connected with the wind chamber, and the air blowing component is used to introduce gas into the wind chamber so that the blowing holes connected with the wind chamber blow out positive pressure airflow outward.

[0008] In some implementations, the wind blocking module includes a first wind blocking plate and a second wind blocking plate, which are distributed along the axial direction of the air flotation roller and are respectively slidably connected to the inner wall of the cavity; the wind chamber is located between the first wind blocking plate and the second wind blocking plate.

[0009] In some implementations, locking components for respectively locking the first and second choke plates are provided between the first and second choke plates and the air float roller, and between the second and second choke plates and the air float roller.

[0010] In some implementations, the air flotation roller includes a back sealing plate, and the locking assembly is provided on the back sealing plate and is located outside the air flotation roller.

[0011] In some implementations, an adjustment slot is provided on the back sealing plate, and the adjustment slot is connected to the cavity. The locking assembly includes a wind-blocking slide, which is slidably arranged on the side of the back sealing plate away from the cavity and is located at the adjustment slot. The wind-blocking slide is connected to the first wind-blocking plate or the second wind-blocking plate through the adjustment slot; a fixed plate, which is arranged on the side of the back sealing plate away from the cavity; and a tightening member, which is arranged on the fixed plate, and the tightening member movably presses and fixes the wind-blocking slide on the back sealing plate.

[0012] In some implementations, the air floatation roller includes a folding air floatation plate, the folding air floatation plate is provided with the cavity, the folding air floatation plate is a semicircular arc plate, and the blowing holes are evenly distributed on the folding air floatation plate.

[0013] In some implementations, the blower assembly includes a blower main pipe for introducing gas into the wind chamber. The blower main pipe is arranged in the wind chamber and located on the outside of the blower main pipe. The blower main pipe is provided with a plurality of air nozzles connected to the wind chamber.

[0014] In some implementations, both ends of the blast main pipe are provided with air inlets for introducing gas, and the air pressure of the gas introduced by the blast assembly into the air inlets at both ends is the same.

[0015] In some implementations, the blast pipe is provided with a barometer at the air inlet for detecting air pressure.

[0016] In a second aspect, the utility model provides a coating machine, comprising the above-mentioned electrode folding and conveying mechanism.

[0017] In summary, the present invention has at least the following advantages:

[0018] 1. The utility model provides a pole piece tape-feeding and returning mechanism, in which the wind-blocking module separates an air chamber in the cavity and can adjust the size of the air chamber. Before the pole piece is bent and tape-feeded, the operator uses the wind-blocking module to adjust the size of the air chamber according to the width of the pole piece. When coating and baking the pole piece, the blower assembly blows gas into the air chamber of the flotation roller, and the gas is blown out from the blowing holes. At this time, the flotation roller reduces the loss of air pressure overflow, and the air suspension effect on its surface is good. The pole piece bypasses the flotation roller to achieve a 180° bending and tape-feeding to return to the oven. The flotation roller can adapt to pole pieces of different models and widths.

[0019] 2. The coating machine provided by the present invention can realize the return conveying of electrodes of different models and widths. The electrodes can be conveyed in a non-contact manner and the tension can be kept balanced, thereby reducing the occurrence of wrinkles or conveying deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of an air flotation roller according to a specific embodiment of the present invention.

[0021] Figure 2 This is a front view of a pole piece folding tape transport mechanism according to a specific embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the air flotation roller according to a specific embodiment of the present invention.

[0023] Figure 4 for Figure 1 A structural diagram from another angle.

[0024] Figure 5 It is a structural schematic diagram of a locking assembly according to a specific embodiment of the present utility model.

[0025] Figure 6 This is a structural schematic diagram of a wind-blocking module hidden in an air float roller according to a specific embodiment of the utility model.

[0026] Figure 7 This is a schematic structural diagram of a regulator according to a specific embodiment of the present invention.

[0027] Figure 8 The figure is a side view of a pole piece return tape transport mechanism according to a specific embodiment of the present invention.

[0028] Markings in the figure:

[0029] 1. Air float roller; 11. Cavity; 111. Air chamber; 12. Air blowing hole; 121. Return air float plate; 13. Back sealing plate; 131. Adjustment chute; 14. Side sealing cover; 15. Partition plate; 151. Cavity;

[0030] 2. Blower assembly; 21. Blower main pipe; 211. Air nozzle; 212. Air inlet; 22. Air supply pipe; 23. Blower; 24. Air pressure gauge; 25. Air pressure regulating manual valve;

[0031] 3. Air choke module; 31. First air choke plate; 32. Second air choke plate; 33. Locking assembly; 331. Air choke slide plate; 3311. Air choke adjustment handle; 332. Fixing plate; 333. Clamping member; 334. Ruler;

[0032] 4. Rack;

[0033] 5. Regulator; 51. Connecting seat; 511. Clamping block; 512. Connecting arm; 52. Screw; 521. Wrench position; 53. Mounting seat; 531. Fine-tuning hole;

[0034] 6. Threaded roller set; 61. Manually adjusted linear slide;

[0035] 7. Pole. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] Please see the attached Figure 1-3 The electrode folding and conveying mechanism of the present invention includes an air flotation roller 1 and a blowing assembly 2. The blowing assembly 2 blows gas into the air flotation roller 1. The air flotation roller 1 suspends the electrode 7 through the air flow. The electrode 7 bypasses the air flotation roller 1 to achieve folding and bending conveying. It can be used in folding coating machines and folding conveying devices for film materials.

[0040] Please see the attached Figure 1The air float roller 1 is specifically arranged horizontally. A cavity 11 is defined in the middle of the air float roller 1. A plurality of air blowing holes 12 are defined on the outer surface of the air float roller 1, each of which is in communication with the cavity 11. In a preferred embodiment, the air float roller 1 includes a folding air float plate 121. In some embodiments shown, the folding air float plate 121 is a semicircular arc plate. The plurality of air blowing holes 12 are evenly distributed on the folding air float plate 121, which helps ensure that the airflow has a balanced pressure when it is blown out of the roller surface of the air float roller 1, thereby ensuring uniform tension of the electrode 7.

[0041] Combine Figure 3 The air flotation roller 1 is provided with a choke module 3, which partitions off a plenum 111 for air circulation within the cavity 11. The choke module 3 can adjust the size of the plenum 111. The air entering the plenum 111 is blown out through the air holes 12, creating an air suspension effect on the surface of the return air flotation plate 121. The airflow lifts the electrode 7, enabling non-contact return conveying.

[0042] Please see the attached Figure 2 and Figure 3 The air flotation roller 1 is connected to the air blowing assembly 2, and the air blowing assembly 2 sends gas into the air chamber 111 so that the air blowing hole 12 connected to the air chamber 111 blows out a positive pressure airflow. In a preferred embodiment, the air blowing assembly 2 includes an air blowing pipe 21, which is specifically a horizontally arranged circular tube. The air blowing pipe 21 is inserted into the air flotation roller 1 to pass through the air chamber 111, and both ends of the air blowing pipe 21 along the axial direction pass through the side cover 14 on the corresponding side. An air nozzle 211 is provided on the air blowing pipe 21, and the air blowing pipe 21 is connected to the air chamber 111 through the air nozzle 211. As shown in some specific embodiments, a plurality of air nozzles 211 are provided, and the plurality of air nozzles 211 are distributed in an array, wherein the number of air nozzles 211 in each row is N, N ≥ 3, and a plurality of air nozzles 211 are provided and evenly distributed, which is conducive to ensuring the uniformity and stability of air flow delivery.

[0043] In a preferred embodiment, air inlets 212 are provided at both ends of the blast main pipe 21 along the axial direction. The blast main pipe 21 is detachably connected to the air supply pipe 22 at the air inlet 212. Specifically, the blast main pipe 21 and the air supply pipe 22 are threadedly connected, and the sealing of the connection between the blast main pipe 21 and the air supply pipe 22 can be ensured by a clamp. A blower 23 is connected to the end of the air supply pipe 22 away from the blast main pipe 21. The blower 23 transports gas into the air supply pipe 22, and the gas is blown into the blast main pipe 21 through the air supply pipe 22. The air flow in the blast main pipe 21 is blown into the air chamber 111 through the air nozzle 212. At this time, the blast main pipe 21 is blown simultaneously by the blowers 23 at the air inlets 212 at both ends, which can effectively balance the wind pressure and flow pressure difference at both ends of the blast main pipe 21, so that the air pressure at both ends is equal, the wind pressure stability is maintained, and the tension balance of the pole piece 7 when bending is ensured.

[0044] In a preferred embodiment, see the attached Figure 1 The blast main pipe 21 is provided with a barometer 24 for detecting air pressure. Specifically, two barometers 24 can be provided and correspondingly arranged at both ends of the blast main pipe 21 along the axial direction. The barometer 24 is located on one side of the air inlet 212 to timely detect the air pressure in the blast main pipe 21, thereby facilitating the adjustment of the gas flow and gas pressure of the blast assembly 2. In some specific embodiments shown, the barometer 24 can be fixed to the blast main pipe 21 by screws. In a preferred embodiment, the blast main pipe 21 is provided with a manual air pressure regulating valve 25 for regulating air pressure. The manual air pressure regulating valve 25 is rotated at a certain angle to adjust the opening and closing size of the air nozzle 211, thereby adjusting the air volume and air pressure in the blast main pipe 21. The manual air pressure regulating valve 25 can be internally provided with a baffle to adjust the opening and closing size of the air nozzle 211. The manual air pressure regulating valve 25 can adjust the air volume and air pressure by adjusting the air pressure regulating valve 25, which is known to those skilled in the art and is achievable, and is not described in detail in this embodiment.

[0045] Before the electrode 7 returns to the tape, the operator can adjust the size of the air chamber 111 according to the width of the different types of electrode 7. When the width of the electrode 7 is smaller than the length of the air float roller 1, the air blocking module 3 reduces the size of the air chamber 111, which helps to reduce the air pressure overflow loss on both sides of the air float roller 1. When the air blowing assembly 2 introduces gas into the air chamber 111, the air flow is blown out through the air holes 12, and the air flow is concentrated, which enhances the air suspension effect of the air float roller 1. The air blocking module 3 allows the air float roller 1 to adapt to electrode types with different widths, improving its flexibility.

[0046] Example 2:

[0047] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the wind blocking module 3 of the utility model. Figure 3-5 .

[0048] See Figure 3 The air choke module 3 includes a first air choke plate 31 and a second air choke plate 32, which are arranged along the axis of the air floatation roller 1. Specifically, the first air choke plate 31 and the second air choke plate 32 are both arc-shaped plates and are slidably disposed within the cavity 11. The first air choke plate 31 and the second air choke plate 32 are respectively slidably connected to the inner wall of the air floatation roller 1, and the first air choke plate 31 and the second air choke plate 32 respectively slide along the axis of the air floatation roller 1.

[0049] The air chamber 111 is located between the first air baffle plate 31 and the second air baffle plate 32. When the first air baffle plate 31 and the second air baffle plate 32 are close to or away from each other, the size of the air chamber 111 can be adjusted, thereby adjusting the air suspension effect of the air float roller 1. The airflow entering the air chamber 111 is more concentrated, which is beneficial to reducing the loss caused by air pressure overflow.

[0050] In a preferred embodiment, the air flotation roller 1 includes a back sealing plate 13, which is located between the side sealing covers 14 at both ends. The back sealing plate 13 and the side sealing covers 14 are detachably connected. Specifically, the back sealing plate 13 and the side sealing covers 14 can be assembled by bolts to facilitate daily maintenance of the interior of the air flotation roller 1. An adjustment slot 131 is formed through the side of the back sealing plate 13 away from the return air flotation plate 121. The adjustment slot 131 is specifically a horizontal waist-shaped hole. The length direction of the adjustment slot 131 is consistent with the axis direction of the air flotation roller 1, and the adjustment slot 131 is provided in several groups. In some specific embodiments shown, two groups of adjustment slots 131 are provided. The two groups of adjustment slots 131 are distributed along the axis direction of the air flotation roller 1. The first air blocking plate 31 and the second air blocking plate 32 are both located on one side of the adjustment slot 131.

[0051] See Figure 4 A locking member 33 is provided between the first air dam plate 31 and the air float roller 1 and between the second air dam plate 32 and the air float roller 1. The locking member 33 is located on the side of the back sealing plate 13 away from the air chamber 111.

[0052] See Figure 5 In a preferred embodiment, the locking member 33 includes a choke plate 331. Both the first choke plate 31 and the second choke plate 32 are connected to the choke plate 331 via an adjustment slot 131. Specifically, the choke plate 331 is a vertically arranged long plate, and its length aligns with the axis of the air floatation roller 1. By sliding the choke plate 331, the operator can move the first choke plate 31 or the second choke plate 32 along the axis of the air floatation roller 1, thereby adjusting the size of the air chamber 111.

[0053] A fixing plate 332 is provided on the side of the back sealing plate 13 away from the air chamber 111. The fixing plate 332 is connected to the back sealing plate 13. Specifically, an adjustment area is formed between the fixing plate 332 and the back sealing plate 13. The wind blocking slide plate 331 is disposed within the adjustment area and slides within the adjustment area to drive the first wind blocking plate 31 or the second wind blocking plate 32 to adjust. The fixing plate 332 is provided with a fastening member 333 for fastening and securing the wind blocking slide plate 331 to the corresponding side of the back sealing plate 13.

[0054] In some specific embodiments shown, the fixing plate 332 is provided with a plurality of threaded holes, spaced apart along the length of the fixing plate 332. The abutting member 333 is an embossed handle, which is inserted into the threaded hole and threadedly connected to the fixing plate 332 via the threaded hole. The embossed handle is screwed into the threaded hole to press the choke slide 331 against the back sealing plate 13. The choke slide 331 is locked by the abutting force, resulting in a simple and easy-to-operate structure. In a preferred embodiment, a scale 334 is provided on one side of the fixing plate 332. The scale 334 is mounted on the back sealing plate 13. The choke slide can use the scale 334 to determine the distance moved, thereby changing the size of the air chamber 111, facilitating precise adjustment of the choke module 3.

[0055] When adjusting the air choke module 3, unlock the embossed handle, and the air choke slide 331 drives the first air choke plate 31 or the second air choke plate 32 to slide to adjust the space size of the air chamber 111. When the first air choke plate 31 or the second air choke plate 32 moves to the appropriate position, the embossed handle is used to press against the air choke slide 332, and the air choke slide 332 is locked. The structure is simple and easy to operate.

[0056] Example 3:

[0057] The difference between this embodiment and the above embodiment is that this embodiment further optimizes the structure of the air float roller 1 of the utility model. Figure 6 .

[0058] The air floatation roller 1 is provided with a partition 15 within the cavity. Specifically, the partition 15 is a long, horizontal plate. In some embodiments shown, the partition 15 divides the air chamber 111 into a plurality of cavities 151. These cavities 151 are arranged vertically to accommodate the folding pattern of the pole piece 7 during the tape run. It should be understood that this does not specify the number of partitions 15 or cavities 151, and those skilled in the art may adjust these numbers based on actual needs.

[0059] The blast main 21 blows air into the cavity 151 through the air nozzle 211. The air chamber 111 is separated by the partition 15. The airflows in the multiple cavities 151 are isolated from each other, making it difficult for them to intersect and affect each other, which is beneficial to improving the stability of the airflow output by the air float roller 1. When the pole piece 7 passes through the air float roller 1 and bends 180° to return to the tape, the tension of the pole piece 7 remains stable and balanced. The multiple cavities 151 provide stable, pressure-balanced airflow at different angles, achieving the effect of isolating the air float roller 1 from the pole piece 7. The air float roller 1 does not directly contact the pole piece 7, and the tension is balanced. This can effectively improve the problems of offset and foil wrinkling, and improve the yield rate of the pole piece 7.

[0060] In a preferred embodiment, multiple choke modules 3 are provided, and the multiple choke modules 3 are arranged corresponding to the cavities 151, so that the space size of each cavity 151 can be adjusted by the choke modules 3. In some specific embodiments shown, a choke adjustment handle 3311 is provided between the choke slides 331 in the multiple cavities 151. The choke adjustment handle 3311 connects the multiple choke slides 331. By pulling the choke adjustment handle 3311, multiple first choke plates 31 or multiple second choke plates 32 can be simultaneously driven to slide, thereby ensuring the adjustment accuracy of the cavity 151 and improving the convenience of operation.

[0061] Example 4:

[0062] The difference between this embodiment and the above embodiment is that, see the attached Figure 7 and Figure 8 In this embodiment, a frame 4 is provided on one side, and an air flotation roller 1 is mounted on the frame 4. An adjuster 5 is provided between the air flotation roller 1 and the frame 4 for adjusting the air flotation roller 1 to a horizontal position. In a preferred embodiment, two adjusters 5 are provided, one at each end of the air blast main pipe 21. It should be understood that this does not specifically limit the number of air blast main pipes 21, and those skilled in the relevant art may make replacements based on this.

[0063] In a preferred embodiment, the regulator 5 includes a fixed seat, which is detachably connected to the frame 4. Specifically, a fine-tuning hole 531 is provided on the fixed seat, and the fine-tuning hole 531 is specifically a waist-shaped hole. The fixed seat is assembled with the frame 4 at the fine-tuning hole 531 by bolts. The fixed seat can adjust the installation position so that the air flotation roller 1 and the pole piece 7 remain parallel to each other.

[0064] A screw rod 52 is provided through the fixing base. The screw rod 52 is specifically arranged vertically and is rotatably connected to the fixing base. A wrench position 521 is provided at the rotatable connection between the screw rod 52 and the fixing base. The screw rod 52 can be rotated by rotating the wrench position 521. The end of the screw rod 52 away from the fixing base is sleeved with a connecting base 51. The screw rod 52 is provided through the connecting base 51 and is threadedly connected to the connecting base 51. By rotating the wrench position 521, the length of the screw rod 52 through the connecting base 51 can be adjusted, thereby adjusting the distance between the connecting base 51 and the fixing base. A connecting arm 512 is installed at one end of the connecting seat 51 away from the screw rod 52, and a clamping block 511 is arranged between the connecting arm 512 and the blast main pipe 21. The connecting seat 51 is connected to the blast main pipe 21 through the connecting arm 512 and the clamping block 511. In some specific embodiments as shown, there are two connecting arms 512 and two clamping blocks 511. The two clamping blocks 511 are arranged around the outside of the blast main pipe 21, and the two clamping blocks 511 are connected by bolts to clamp the pipe wall of the blast main pipe 21.

[0065] By rotating the wrench position 521, the screw rod 52 rotates to adjust the distance between the connecting seat 51 and the fixed seat. The end of the corresponding side of the flotation roller 1 can be adjusted in height. The flotation roller 1 is adjusted to a horizontal state, which is beneficial to further reduce the wrinkling or tape deviation of the pole piece 7.

[0066] In a preferred embodiment, a threaded roller assembly 6 is provided on one side of the air flotation roller 1. Specifically, the threaded roller assembly 7 includes a first threaded roller and a second threaded roller, which are symmetrically arranged vertically. The pole piece 7 is dewrinkled by the first threaded roller and conveyed to the air flotation roller 1. The pole piece 7 then passes around the air flotation roller 1 to achieve a bend and return run, and is conveyed to the second threaded roller. The pole piece 7 is then returned to the oven by the second threaded roller. A manually adjustable linear slide 61 is provided between the first and second threaded rollers. The manually adjustable linear slide 61 adjusts the distance between the first and second threaded rollers to accommodate different run conditions and improve flexibility.

[0067] Example 5:

[0068] This embodiment provides a coating machine based on the above embodiment.

[0069] A coating machine includes an unwinding mechanism, a coating mechanism, a drying mechanism and a winding mechanism arranged in sequence according to the processing order of the electrode. Among them, the drying mechanism is preferably but not limited to an oven, and the above-mentioned electrode folding and conveying mechanism is provided in the drying mechanism to perform a secondary baking on the foil coated with the slurry.

[0070] The coating machine of the present invention can realize the folding and running of electrodes of different models and widths through the electrode folding and running mechanism, and can ensure the tension balance of the electrode during the non-contact running process, reduce the occurrence of wrinkles or running deviation, and thus ensure that a uniform coating is formed on the surface of the foil.

[0071] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0072] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0073] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0074] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A pole piece return tape mechanism, characterized in that: include An air flotation roller (1), wherein a cavity (11) is provided in the middle of the air flotation roller (1), and a plurality of blowing holes (12) are provided on the outer surface of the air flotation roller (1), and each of the blowing holes (12) is communicated with the cavity (11); A wind-blocking module (3) is disposed in the cavity (11) and separates a wind chamber (111) for gas circulation in the cavity (11), wherein the wind-blocking module (3) is used to adjust the size of the wind chamber (111); as well as The air blowing assembly (2) is connected to the air chamber (111), and the air blowing assembly (2) is used to introduce gas into the air chamber (111) so that the air blowing hole (12) connected to the air chamber (111) blows out a positive pressure airflow.

2. The pole piece folding and conveying mechanism according to claim 1, characterized in that: The wind blocking module (3) comprises a first wind blocking plate (31) and a second wind blocking plate (32), wherein the first wind blocking plate (31) and the second wind blocking plate (32) are distributed along the axis direction of the air floatation roller (1) and are respectively slidably connected to the inner wall of the cavity (11); The air chamber (111) is located between the first wind blocking plate (31) and the second wind blocking plate (32).

3. The pole piece folding and conveying mechanism according to claim 2, characterized in that: Locking components (33) for respectively locking the first wind blocker (31) and the second wind blocker (32) are provided between the first wind blocker (31) and the air floatation roller (1), and between the second wind blocker (32) and the air floatation roller (1).

4. The pole piece folding and conveying mechanism according to claim 3, characterized in that: The air flotation roller (1) comprises a back sealing plate (13), and the locking assembly (33) is arranged on the back sealing plate (13) and is located outside the air flotation roller (1).

5. The pole piece folding and conveying mechanism according to claim 4, characterized in that: The back sealing plate (13) is provided with an adjusting chute (131), the adjusting chute (131) is communicated with the cavity (11), and the locking assembly (33) comprises: A wind-blocking slide plate (331) is slidably arranged on a side of the back sealing plate (13) away from the cavity (11) and located at the adjusting slide groove (131); the wind-blocking slide plate (331) is connected to the first wind-blocking plate (31) or the second wind-blocking plate (32) via the adjusting slide groove (131); a fixing plate (332) disposed on a side of the back sealing plate (13) away from the cavity (11); and A pressing member (333) is provided on the fixing plate (332), and the pressing member (333) movably presses and fixes the wind-blocking slide plate (331) on the back sealing plate (13).

6. The pole piece folding and conveying mechanism according to claim 1, characterized in that: The air flotation roller (1) comprises a folding air flotation plate (121), the folding air flotation plate (121) is provided with the cavity (11), the folding air flotation plate (121) is a semicircular arc plate, and a plurality of blowing holes (12) are evenly distributed on the folding air flotation plate (121).

7. The pole piece folding and conveying mechanism according to claim 1, characterized in that: The blast assembly (2) comprises a blast main pipe (21) for introducing gas into the air chamber (111); the blast main pipe (21) is arranged in the air chamber (111); and a plurality of air nozzles (211) connected to the air chamber (111) are provided on the blast main pipe (21).

8. The pole piece folding and conveying mechanism according to claim 7, characterized in that: Both ends of the blast main pipe (21) are provided with air inlets (212) for introducing gas, and the air pressure of the gas introduced by the blast assembly (2) into the air inlets (212) at both ends is the same.

9. The pole piece folding and conveying mechanism according to claim 8, characterized in that: The blast main pipe (21) is provided with a barometer (24) for detecting air pressure at the air inlet (212).

10. A coating machine, characterized in that: It comprises the pole piece folding and transporting mechanism as described in any one of claims 1 to 9.

Images