Coiled material suspension turn-over device and pole piece coating system

Abstract

The invention relates to the technical field of lithium electrode plate production, and discloses a coiled material suspension turn-over device and a pole plate coating system.The coiled material suspension turn-over device comprises a mounting rack, a first steering suspension turn-over roller mechanism and a second steering suspension turn-over roller mechanism, and the first steering suspension turn-over roller mechanism and the second steering suspension turn-over roller mechanism are arranged at different heights of the mounting rack; wherein an angle alpha is formed between the axial direction of the first steering suspension turn-over roller mechanism and the initial feeding direction of the coiled material, an angle beta is formed between the axial direction of the second steering suspension turn-over roller mechanism and the initial feeding direction of the coiled material, alpha + beta is equal to 90 degrees, alpha is larger than or equal to 0 and smaller than or equal to 90 degrees, and beta is larger than or equal to 0 and smaller than or equal to 90 degrees. According to the coiled material suspension turnover device, 180-degree suspension turnover can be achieved under the condition that the original tape walking direction of the pole piece is not changed, by combining with the pole piece coating system, the effects that the wet face faces upwards, an air nozzle is not scraped and an empty tape walking process does not exist in two times of coating can be achieved, and the pole piece baking quality and the tape walking efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium electrode sheet production, and specifically relates to a coil suspension turning device and an electrode sheet coating system. Background Art

[0002] During the coating stage of lithium battery pole pieces, the slurry is evenly attached to both sides of the current collector after two coating and baking processes. At present, the return coaters on the market often have the wet material side facing down during double-sided coating. During the baking process of the pole pieces on both sides, the wet material surface is very easy to be blown by the wind nozzle with this kind of film path design, which will destroy the surface integrity of the pole piece and cause the pole piece to be scrapped. In addition, after baking on both sides, an empty belt is often required to complete the winding, which has low belt feeding efficiency and increases production instability. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a coil suspension turning device, which combines a first steering suspension turning roller mechanism and a second steering suspension turning roller mechanism whose axial direction is at a certain angle to the initial feeding direction of the coil, and is applied to the suspension turning of the electrode after the A side is coated, and can realize the 180° suspension turning operation of the A / B side without changing the running direction of the electrode; while suspending and turning, a tension adjustment roller mechanism is used to adjust the tension of the coil running in real time, so as to prevent the coil from wrinkling or breaking during the process of suspension turning of the running coil, and further effectively ensure the quality of the suspension turning of the running coil. The coil suspension turning device mentioned in the present invention has complete functions, compact structure, easy installation and debugging, wide application range, and can realize efficient suspension turning of flexible coils.

[0004] In addition, the present invention also provides a pole piece coating system, which is composed of the above-mentioned coil suspension turning device and the unwinding device, the first coating device, the first oven, the first traction device, the second coating device, the second oven, the second traction device and the winding device. It can achieve that the wet material surface is facing upward after two coatings, there is no wind nozzle, and there is no empty belt process, thereby effectively improving the efficiency and quality of pole piece production.

[0005] The technical effects to be achieved by the present invention are achieved through the following technical solutions: The coil suspension turning device of the present invention comprises a mounting frame, a first steering suspension turning roller mechanism and a second steering suspension turning roller mechanism arranged at different heights of the mounting frame, and a tension adjustment roller mechanism arranged between the first steering suspension turning roller mechanism and the second steering suspension turning roller mechanism; wherein: The axial direction of the first steering suspension turning roller mechanism forms an angle α with the initial feeding direction of the coil, the axial direction of the second steering suspension turning roller mechanism forms an angle β with the initial feeding direction of the coil, and α+β=90°, 0≤α≤90°, 0≤β≤90°; after the coil is suspended and turned by the first steering suspension turning roller mechanism and the second steering suspension turning roller mechanism, its output direction is consistent with the initial feeding direction, and at the same time, the opposite sides of the coil are swapped by 180°.

[0006] As a preferred solution, the coil suspension turning device also includes a third steering suspension turning roller mechanism which is arranged on the mounting frame and has a different height from the first steering suspension turning roller mechanism and the second steering suspension turning roller mechanism. There are one or more third steering suspension turning roller mechanisms, so that the total number of steering suspension turning roller mechanisms is N, where N≥2 and N is an integer.

[0007] As a preferred solution, the axial angle between any two of the first steering suspension turning roller mechanism, the second steering suspension turning roller mechanism and the third steering suspension turning roller mechanism is 60°; the coil is turned 3 times and suspended and turned 5 times, which can also achieve the same coil running direction unchanged and the A and B sides being reversed.

[0008] As a preferred solution, the angle α is 10°-80°, and the angle β is 10°-80°; the first steering suspension flipping roller mechanism (200) causes the coil running direction to be deflected by 2α, the first steering direction forms an angle of 2α with the initial feeding direction of the coil, and the A and B sides of the coil are reversed; the tension adjustment roller mechanism (400) causes the coil running direction after the steering suspension flipping to be reversed by 180°, the coil running direction after the reversed steering suspension flipping forms an angle of 180°-2α with the initial feeding direction of the coil, and the A and B sides of the coil are the same as the initial direction; the second steering suspension flipping roller mechanism (300) causes the coil to be deflected by 180°-2α in the same direction as the first steering, the coil running direction after the deflection forms an angle of 0° with the initial feeding direction of the coil, that is, the same as the original coil running direction, and the A and B sides of the coil are reversed.

[0009] As a preferred scheme, the first steering suspension turning roller mechanism, the second steering suspension turning roller mechanism and the third steering suspension turning roller mechanism all include a steering suspension turning roller, an air uniforming plate arranged inside the steering suspension turning roller, a plurality of air outlet holes arranged on the surface adjacent to the steering suspension turning roller and the coil, an air inlet hole arranged on the surface opposite to the steering suspension turning roller and the coil, and an air supply component connected to the interior of the steering suspension turning roller.

[0010] As a preferred solution, the first steering suspension turning roller mechanism, the second steering suspension turning roller mechanism and the third steering suspension turning roller mechanism further include an adjustable nozzle disposed on the air outlet for adjusting the air outlet speed.

[0011] As a preferred solution, the mounting frame includes a first mounting frame connected to the first steering suspension flipping roller mechanism, a second mounting frame connected to the second steering suspension flipping roller mechanism and horizontally rotating relative to the first mounting frame, and a third mounting frame connected to the first mounting frame or the second mounting frame and horizontally rotating relative to the first mounting frame or the second mounting frame.

[0012] As a preferred solution, the first steering suspension turning roller mechanism, the second steering suspension turning roller mechanism and the third steering suspension turning roller mechanism are non-contact air-floating suspension turning roller mechanisms or magnetic suspension turning roller mechanisms.

[0013] As a preferred solution, the coil suspension turning device also includes a correction mechanism arranged on the mounting frame for realizing horizontal rotation between each steering suspension turning roller mechanism; wherein, the correction mechanism includes a rotating shaft passing through the mounting frame, a position sensor corresponding to each steering suspension turning roller mechanism and arranged on the mounting frame, and a rotating drive assembly respectively connected to the rotating shaft and the position sensor.

[0014] As a preferred solution, the tension adjustment roller mechanism includes a tension detection roller arranged on the side of the mounting frame and having an axial direction perpendicular to the initial feeding of the coil, multiple groups of tension adjustment roller assemblies arranged on the side of the mounting frame and having axial directions parallel to the axial direction of the tension detection roller, and a tension detection sensor arranged corresponding to the tension detection roller.

[0015] As a preferred solution, the tension adjustment roller assembly includes a swing arm swingably set on the mounting frame, a tension adjustment rotary shaft connected to the movable end of the swing arm and having an axial direction perpendicular to the initial feeding direction of the coil, a tension adjustment roller passing through the tension adjustment rotary shaft, and a swing arm drive unit corresponding to the swing arm and installed on the mounting frame.

[0016] As a preferred solution, the coil suspension turning device further comprises a traction roller mechanism whose axial direction is perpendicular to the initial feeding direction of the coil and is arranged on the side of the mounting frame, and a pressing roller mechanism which is parallel to the axial direction of the traction roller assembly and is arranged on the mounting frame; wherein, The traction roller mechanism comprises a traction roller assembly whose axial direction is perpendicular to the initial feeding direction of the coil, and a traction drive assembly connected to the traction roller assembly; The clamping roller mechanism comprises a clamping roller assembly whose axial direction is parallel to the axial direction of the traction roller assembly, and a clamping drive assembly connected to the clamping roller assembly and arranged on the mounting frame.

[0017] As a preferred solution, the coil suspension turning device also includes a receiving roller mechanism whose axial direction is perpendicular to the initial feeding direction of the coil and is arranged on two opposite sides of the mounting frame, and the axial direction of the receiving roller mechanism is parallel to the axial direction of the traction roller assembly and the pressure roller assembly.

[0018] The electrode coating system of the present invention comprises a sequentially arranged unwinding device, a first coating device, a first oven, the coil suspension turning device as described above, a first traction device, a second coating device, a second oven, a second traction device and a winding device.

[0019] In summary, the present invention has at least the following benefits: 1. The coil suspension turning device of the present invention combines a first steering suspension turning roller mechanism and a second steering suspension turning roller mechanism whose axial direction is at a certain angle to the initial feeding direction of the coil, and is applied to the suspension turning of the electrode after the A side is coated, and can realize the 180° suspension turning operation of the A / B side without changing the electrode running direction.

[0020] 2. The coil suspension turning device of the present invention adopts a tension adjustment roller mechanism to adjust the tension of the coil running in real time to prevent the coil from wrinkling or breaking during the process of the coil running, suspension and turning, and further effectively ensure the quality of the coil running, suspension and turning.

[0021] 3. The coil suspension turning device of the present invention combines the first steering suspension turning roller mechanism and the second steering suspension turning roller mechanism with a tension adjustment roller mechanism, whose axial direction forms a certain angle with the initial feeding direction of the coil. The suspension turning function is complete, the structure is compact, and it is easy to install and debug. It has a wide range of applications and can realize efficient suspension turning of flexible coils.

[0022] 4. The electrode coating system of the present invention is composed of the above-mentioned coil suspension turning device combined with the unwinding device, the first coating device, the first oven, the first traction device, the second coating device, the second oven, the second traction device and the winding device, which can effectively ensure the quality and efficiency of the electrode coating suspension turning, thereby effectively improving the efficiency and quality of electrode production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the overall structure of the coil suspension turning device in Example 1 of the present invention; Figure 2 1 is a schematic top view of the structure of the coiled material suspension turning device in Example 1 of the present invention; Figure 3 It is a schematic side view of the structure of the coiled material suspension turning device in Example 1 of the present invention; Figure 4 It is a structural schematic diagram of the angles formed by the axial directions of the first steering suspension turning roller mechanism and the second steering suspension turning roller mechanism and the initial feeding direction of the coil in Example 1 of the present invention; Figure 5 is a schematic diagram of the structure of the coiled material conveying in Embodiment 1 of the present invention; Figure 6 yes Figure 3 The schematic cross-sectional view of the structure at P in the middle; Figure 7 It is a schematic diagram of the structure of the electrode coating system in Example 2 of the present invention.

[0024] Reference numerals: 10. Unwinding device, 20. First coating device, 30. First oven, 40. Coil suspension turning device, 50. First traction device, 60. Second coating device, 70. Second oven, 80. Second traction device, 90. Winding device; 100, mounting rack, 110, first mounting rack, 120, second mounting rack; 200, a first steering suspension flipping roller mechanism, 300, a second steering suspension flipping roller mechanism, 210, a steering suspension flipping roller, 220, an air uniforming plate, 230, an air outlet, 240, an air inlet, 250, an adjustable nozzle; 400, tension adjustment roller mechanism, 410, tension detection roller, 420, tension adjustment roller assembly, 421, swing arm, 422, tension adjustment rotary shaft, 423, tension adjustment roller, 424, swing arm driving unit, 430, tension detection sensor; 500, deviation correction mechanism, 510, rotary shaft, 520, position sensor, 530, rotary drive assembly; 600, traction roller mechanism, 610, traction roller assembly, 620, traction drive assembly; 700, a pressing roller mechanism, 710, a pressing roller assembly, 720, a pressing drive assembly; 800. A receiving roller mechanism; 810. A first receiving roller assembly; 820. A second receiving roller assembly; 830. A third receiving roller assembly; 840. A fourth receiving roller assembly; 850. A fifth receiving roller assembly. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 them.

[0026] 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] Example 1 Please see attached Figure 1-3 The web suspension turning device 40 in this embodiment includes a mounting frame 100, a first steering suspension turning roller mechanism 200 and a second steering suspension turning roller mechanism 300 arranged at different heights of the mounting frame 100, and a tension adjustment roller mechanism 400 arranged between the first steering suspension turning roller mechanism 200 and the second steering suspension turning roller mechanism 300; please refer to the attached Figure 4The axial direction of the first steering suspension turning roller mechanism 200 forms an angle α with the initial feeding direction V of the coil, the axial direction of the second steering suspension turning roller mechanism 300 forms an angle β with the initial feeding direction V of the coil, and α+β=90°, 0≤α≤90°, 0≤β≤90°, after the coil is suspended and turned by the first steering suspension turning roller mechanism 200 and the second steering suspension turning roller mechanism 300, its output direction is consistent with the initial feeding direction, and at the same time, the two opposite sides of the coil are swapped by 180°; preferably, the angle α is 10°-80°, and the angle β is 10°-80°.

[0030] Please refer to the attached Figure 5 When the coil (for example, the pole piece) is suspended and turned over, the first steering suspension turning roller mechanism 200 which is at an angle of α to the initial feeding direction V of the coil can deflect the pole piece's tape running direction by 2α, that is, the pole piece's first steering direction forms an angle of 2α with the initial feeding direction of the pole piece, and the pole piece's A and B faces are reversed; then, the pole piece is conveyed to the tension adjustment roller mechanism 400, and the tension adjustment roller mechanism 400 can make the pole piece's tape running direction after the steering suspension turning be reversed by 180°. After the reversal, the pole piece's tape running direction forms an angle of 180°-2α with the pole piece's initial feeding direction, and the pole piece's A and B faces are reversed; then, the pole piece continues to be conveyed to the second steering suspension turning roller mechanism 300, and the second steering suspension turning roller mechanism 300 deflects the pole piece by 180°-2α in the same direction of the first steering, and after the deflection, the pole piece's tape running direction forms 0° with the pole piece's initial feeding direction, which is the same as the original pole piece's traveling direction, and the pole piece's A and B faces are reversed.

[0031] Furthermore, the first steering suspension flipping roller mechanism 200 and the second steering suspension flipping roller mechanism 300 are non-contact air-floating suspension flipping roller mechanisms or magnetic suspension flipping roller mechanisms. For example, the first steering suspension flipping roller mechanism 200 and the second steering suspension flipping roller mechanism 300 are both non-contact air-floating suspension flipping roller mechanisms. Figure 1-3 The first steering suspension turning roller mechanism 200 and the second steering suspension turning roller mechanism 300 both include a steering suspension turning roller 210 for assisting the pole piece in steering suspension turning, a wind uniforming plate 220 arranged inside the steering suspension turning roller 210 for balancing the air volume, a plurality of air outlet holes 230 arranged on the surface adjacent to the steering suspension turning roller 210 and the coil for discharging air so that the pole piece is suspended on the surface of the steering suspension turning roller 210, an air inlet hole 240 arranged on the surface opposite to the coil for external air volume to enter the steering suspension turning roller 210, and an air supply component (not marked in the figure) connected to the interior of the steering suspension turning roller 210 for realizing air circulation inside and outside the steering suspension turning roller 210.

[0032] Preferably, the air outlet holes 230 are evenly or unevenly distributed along the axial and circumferential directions of the steering suspension flip roller 210, and can be air outlet hole structures of the same or different sizes. The shape of the air outlet holes is not limited to circular or square, and the diameter or side length is between 0.5 mm and 20 mm. The air inlet holes 240 are distributed along the axial direction of the steering suspension flip roller 210, and the number can be designed to be M (M≥1, an integer) according to actual needs, and the shape of the air inlet holes 240 is not limited to circular, and the size is between Ф50 and Ф120. The air supply component is a fan component, which delivers wind to the inside of the steering suspension flip roller 210. The size of the wind is adjusted by adjusting the power supply frequency of the external fan. After the wind passes through the air outlet holes 230, it can be suspended at a height of 0.2 mm to 8 mm on the surface of the steering suspension flip roller 210 to prevent the surface of the coated pole piece from directly contacting the surface of the steering suspension flip roller 210, causing the steering suspension flip roller 210 to scrape the slurry layer after coating, affecting the coating quality of the pole piece.

[0033] In some embodiments, the first steering suspension flipping roller mechanism 200 and the second steering suspension flipping roller mechanism 300 further include an adjustable nozzle 250 disposed on the air outlet 230 for adjusting the air outlet speed, as shown in the attached Figure 6 As shown, the adjustable nozzle 250 is installed in the air outlet 230 by a connection method not limited to threaded connection and interference fit, and the air outlet speed is adjusted by changing the size of the air outlet, so that the wind speed of the air outlet 230 is adjustable; preferably, the adjustable nozzle 250 can be set on part of the air outlet 230 to achieve the situation where the wind speed of the local air outlet 230 on the surface of the steering suspension flip roller 210 is adjustable.

[0034] Please see attached Figure 1-3 The mounting frame 100 includes a first mounting frame 110 connected to the first steering suspension flipping roller mechanism 200, and a second mounting frame 120 connected to the second steering suspension flipping roller mechanism 300 and horizontally rotating relative to the first mounting frame 110; when any one of the first mounting frame 110 and the second mounting frame 120 is horizontally rotated, the steering suspension flipping roller mechanism connected thereto can be driven to rotate, which can not only realize the adjustment of the angle between the steering suspension flipping roller mechanism and the initial feeding direction of the pole piece, thereby adjusting the steering flipping angle of the pole piece, but also realize the correction and fine adjustment of the pole piece tape through the horizontal rotation between different mounting frames.

[0035] In some embodiments, the coil suspension turning device 40 further includes a third steering suspension turning roller mechanism (not marked in the figure) arranged on the mounting frame 100 and having a different height from the first steering suspension turning roller mechanism 200 and the second steering suspension turning roller mechanism 300; the third steering suspension turning roller mechanism (not marked in the figure) is one or more, so that the total number of steering suspension turning roller mechanisms is N, wherein N≥2, N is an integer, and when the steering suspension turning roller mechanism is designed to be N (where N is an integer ≥2), the mounting frame is also correspondingly set to be N (where N is an integer ≥2), as long as the pole piece walking suspension turning operation is successfully performed. Preferably, when the number of the third steering suspension turning roller mechanism is one, the axis angle between any two mechanisms of the first steering suspension turning roller mechanism 200, the second steering suspension turning roller mechanism 300 and the third steering suspension turning roller mechanism (not marked in the figure) is 60°, which can make the pole piece turn 3 times and suspend and turn 5 times, and can also achieve that the pole piece walking direction remains unchanged and the A and B faces are reversed.

[0036] 1. The design of the third steering suspension turning roller mechanism (not marked in the figure) is as follows: The structural design of the third steering suspension turning roller mechanism is the same as that of the first steering suspension turning roller mechanism and the second steering suspension turning roller mechanism, and both are non-contact air-floating suspension turning roller mechanisms or magnetic suspension turning roller mechanisms. Taking the first steering suspension turning roller mechanism 200, the second steering suspension turning roller mechanism 300 and the third steering suspension turning roller mechanism (not marked in the figure) as non-contact air-floating suspension turning roller mechanisms as an example, the first steering suspension turning roller mechanism 200, the second steering suspension turning roller mechanism 300 and the third steering suspension turning roller mechanism (not marked in the figure) all include a steering suspension turning roller 210 for assisting the pole piece in steering suspension turning, a uniform wind plate 220 arranged inside the steering suspension turning roller 210 for balancing the air volume, a plurality of air outlet holes 230 arranged on the surface adjacent to the steering suspension turning roller 210 and the coil for discharging air so that the pole piece is suspended on the surface of the steering suspension turning roller 210, an air inlet hole 240 arranged on the surface opposite to the coil for external air volume to enter the steering suspension turning roller 210, and an air supply component (not marked in the figure) connected to the interior of the steering suspension turning roller 210 for realizing air circulation inside and outside the steering suspension turning roller 210.

[0037] In some embodiments, the first steering suspension flipping roller mechanism 200, the second steering suspension flipping roller mechanism 300 and the third steering suspension flipping roller mechanism (not shown in the figure) also include an adjustable nozzle 250 disposed on the air outlet 230 for adjusting the air outlet speed. The air outlet speed is adjusted by changing the size of the air outlet, so that the air speed of the air outlet 230 is adjustable.

[0038] 2. The design of the mounting rack 100 is as follows: When the coil suspension turning device 40 is provided with a third steering suspension turning roller mechanism (not marked in the figure), the mounting frame 100 includes a first mounting frame 110 connected to the first steering suspension turning roller mechanism 200, a second mounting frame 120 connected to the second steering suspension turning roller mechanism 300 and horizontally rotating relative to the first mounting frame 110, and a third mounting frame (not marked in the figure) connected to the first mounting frame 110 or the second mounting frame 120 and horizontally rotating relative to the first mounting frame 110 or the second mounting frame 120; when any one of the first mounting frame 110, the second mounting frame 120 and the third mounting frame (not marked in the figure) is horizontally rotated, the steering suspension turning roller mechanism connected thereto can be driven to rotate, which can not only realize the adjustment of the angle between the steering suspension turning roller mechanism and the initial feeding direction of the pole piece, thereby adjusting the steering and flipping angle of the pole piece, but also realize the correction and fine adjustment of the pole piece tape through the horizontal rotation between different mounting frames.

[0039] In some embodiments, the web suspension turning device 40 further includes a deviation correction mechanism 500 disposed on the mounting frame and used to realize horizontal rotation between the steering suspension turning roller mechanisms; Figure 1-2 The correction mechanism 500 includes a rotating shaft 510 passing through the first mounting frame 110 and the second mounting frame 120, a position sensor 520 corresponding to each steering suspension flipping roller mechanism and arranged on the first mounting frame 110 and the second mounting frame 120, and a rotating drive assembly 530 respectively connected to the rotating shaft 510 and the position sensor 520.

[0040] Please see attached Figure 1-3 The tension adjustment roller mechanism 400 includes a tension detection roller 410 disposed on the side of the mounting frame 100 and having an axial direction perpendicular to the initial feeding direction of the coil, a plurality of tension adjustment roller assemblies 420 disposed on the side of the mounting frame 100 and having an axial direction parallel to the axial direction of the tension detection roller 410, and a tension detection sensor 430 disposed corresponding to the tension detection roller 410 and used for real-time detection of the tension of the coil on the tension detection roller 410. In some embodiments, preferably, the tension adjustment roller assembly 420 includes a swing arm 421 swingably disposed on the mounting frame 100, a tension adjustment rotary shaft 422 connected to the movable end of the swing arm 421 and having an axial direction perpendicular to the initial feeding direction V of the coil, a tension adjustment roller 423 passing through the tension adjustment rotary shaft 422, and a swing arm driving unit 424 corresponding to the swing arm 421 and mounted on the mounting frame 100; further preferably, the swing arm driving unit 424 is a cylinder driving unit.

[0041] When the pole piece coil passes through the tension detection roller 410 and the tension adjustment roller 423 in turn, the tension detection sensor 430 can detect the pole piece tension wrapped around the tension detection roller 410 in real time. When the tension on the tension detection roller 410 is too small, the swing arm drive unit 424 can be started to move the swing arm 421 to drive the tension adjustment roller 423 connected thereto to move, thereby increasing the distance between the tension adjustment roller 423 and the tension detection roller 410, so as to prevent the pole piece from wrinkling due to too small tension. On the contrary, when the tension on the tension detection roller 410 is too large, the swing arm drive unit 424 can be started to move the swing arm 421 to drive the tension adjustment roller 423 connected thereto to move, thereby reducing the distance between the tension adjustment roller 423 and the tension detection roller 410, so as to prevent the pole piece from breaking due to too large tension.

[0042] Please see attached Figure 1-3 In some embodiments, the web floating turning device 40 further includes a traction roller mechanism 600 disposed on the side of the mounting frame 100 and having an axial direction perpendicular to the initial feeding direction V of the web, and a pressing roller mechanism 700 disposed on the mounting frame 100 and parallel to the axial direction of the traction roller mechanism 600; further, please refer to the attached Figure 1 The traction roller mechanism 600 includes a traction roller assembly 610 whose axial direction is perpendicular to the initial feeding direction V of the coil and is used to traction the pole piece, and a traction drive assembly 620 connected to the traction roller assembly 610 and used to provide a traction power source; the pressing roller mechanism 700 includes a pressing roller assembly 710 whose axial direction is parallel to the axial direction of the traction roller assembly 610 and is used to press the pole piece, and a pressing drive assembly 720 connected to the pressing roller assembly 710 and arranged on the mounting frame 100. Preferably, the traction roller assembly 610 and the pressing roller assembly 710 are both structural assemblies that can realize roller conveying in the prior art, and the specific structure is not clearly limited, as long as the corresponding function can be realized; the traction drive assembly 620 is a motor drive assembly, and the pressing drive assembly 720 is a cylinder drive assembly.

[0043] The axis of the traction roller assembly 610 is perpendicular to the initial feeding direction of the pole piece, and the axis of the clamping roller assembly 710 is parallel to the axis of the traction roller assembly 610. The pole piece is pressed between the traction roller assembly 610 and the clamping roller assembly 710. When the traction drive assembly 620 is driven, it drives the traction roller assembly 610 to rotate, so that the pole piece starts to move. Before or during the movement, the clamping drive assembly 720 can drive the clamping roller assembly 710 to move closer to or away from the traction roller assembly 610 to press the pole piece to prevent the pole piece from shifting during the movement.

[0044] Please see attached Figure 1-3In some embodiments, the coil suspension turning device 40 further includes a receiving roller mechanism 800, which is perpendicular to the initial feeding direction V of the coil and is arranged on two opposite sides of the mounting frame 100, and the axial direction of the receiving roller mechanism 800 is parallel to the axial direction of the traction roller assembly 610 and the pressure roller assembly 710, and is used to receive and continue to convey the pole piece that has completed the suspension turning, so as to facilitate the loading and unloading of the pole piece and the production in the next process. Preferably, the receiving roller mechanism 800 includes a first receiving roller assembly 810, a second receiving roller assembly 820 and a third receiving roller assembly 830, which are adjacent to the initial feeding end of the coil and are arranged on the mounting frame 100, and a fourth receiving roller assembly 840 and a fifth receiving roller assembly 850, which are adjacent to the discharge end of the coil and are arranged on the mounting frame 100. Each receiving roller assembly is a structural assembly that can realize roller conveying in the prior art, and the specific structure is not clearly limited, as long as the corresponding function can be realized.

[0045] It can be seen from the technical solutions of the above embodiments that the present invention provides a coil suspension turning device, which can not only realize the suspension turning operation during the pole piece conveying process and improve the efficiency of the pole piece suspension turning, but also the pole piece conveying direction remains unchanged, which can reduce the coating slurry scratches caused by the change in conveying direction and reduce the loss of pole piece material, thereby effectively ensuring the quality of the pole piece during the suspension turning process; at the same time, it can effectively optimize the spatial layout of the equipment, thereby optimizing the efficiency of the coil conveying.

[0046] Example 2 Please see attached Figure 7 The electrode coating system in this embodiment includes an unwinding device 10, a first coating device 20, a first oven 30, a coil suspension turning device 40 as described in the above embodiment, a first traction device 50, a second coating device 60, a second oven 70, a second traction device 80 and a winding device 90 which are arranged in sequence. Among them, the unwinding device 10 is used for unwinding the electrode, the first coating device 20 is used for coating one side (side A) of the electrode, the first oven 30 is used for drying the side A of the electrode after coating with slurry, the coil suspension turning device 40 is used for suspending and turning over the electrode after coating and drying, so as to facilitate coating of the other side (side B) of the electrode, the first traction device 50 is used for traction and transportation of the electrode after coating on one side, the second coating device 60 is used for coating the other side of the electrode, the second oven 70 is used for drying the side B after coating with slurry, the second traction device 80 is used for continuing to traction and transportation of the electrode after coating, and the winding device 90 is used for winding up the electrode after coating.

[0047] Since the coil suspension turning device 40 in the above embodiment can effectively reduce the loss of electrode material and ensure the quality of the electrode during the suspension and turning process, the electrode coating system composed of the coil suspension turning device 40 in the above embodiment can also effectively ensure the quality of electrode production and reduce the loss of electrode production.

[0048] It can be seen from the technical solutions of the above embodiments that the present invention provides a pole piece coating system, which is composed of the above-mentioned coil suspension turning device in combination with the unwinding device, the first coating device, the first oven, the first traction device, the second coating device, the second oven, the second traction device and the winding device, which can effectively ensure the quality and efficiency of the pole piece coating suspension turning, thereby effectively improving the efficiency and quality of pole piece production.

[0049] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and 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 not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a 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 a 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.

[0052] Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A coiled material suspension turning device, characterized in that: The invention comprises a mounting frame (100), a first steering suspension flipping roller mechanism (200) and a second steering suspension flipping roller mechanism (300) arranged at different heights of the mounting frame (100), and a tension adjustment roller mechanism (400) arranged between the first steering suspension flipping roller mechanism (200) and the second steering suspension flipping roller mechanism (300); wherein: The axial direction of the first steering suspension flipping roller mechanism (200) forms an angle α with the initial feeding direction of the coiled material, the axial direction of the second steering suspension flipping roller mechanism (300) forms an angle β with the initial feeding direction of the coiled material, and α+β=90°, 0≤α≤90°, 0≤β≤90°; After the coil is suspended and turned over by the first steering suspension turning roller mechanism (200) and the second steering suspension turning roller mechanism (300), its output direction is consistent with the initial feeding direction, and at the same time, the two opposite sides of the coil are swapped by 180 degrees.

2. The coiled material floating turning device according to claim 1 is characterized in that: It also includes a third steering suspension flipping roller mechanism which is arranged on the mounting frame (100) and has a different height from the first steering suspension flipping roller mechanism (200) and the second steering suspension flipping roller mechanism (300), and the third steering suspension flipping roller mechanism is one or more, so that the total number of steering suspension flipping roller mechanisms is N, wherein N≥2, and N is an integer.

3. The coiled material floating turning device according to claim 2, characterized in that: The axis angle between any two of the first steering suspension turning roller mechanism (200), the second steering suspension turning roller mechanism (300) and the third steering suspension turning roller mechanism is 60°; the coil is turned three times and suspended and turned five times, and the running direction of the coil remains unchanged and the A and B faces are reversed.

4. The coiled material floating turning device according to claim 1, characterized in that: The α angle is 10°-80°, and the β angle is 10°-80°; The first steering suspension flipping roller mechanism (200) causes the coil running direction to be deflected by 2α, the first steering direction forms an angle of 2α with the initial feeding direction of the coil, and the A and B sides of the coil are reversed. The tension adjustment roller mechanism (400) causes the coil running direction to be reversed by 180° after the steering suspension flipping, the coil running direction after the reversed rotation forms an angle of 180°-2α with the initial feeding direction of the coil, and the A and B sides of the coil are the same as the original direction. The second steering suspension flipping roller mechanism (300) causes the coil to be deflected by 180°-2α in the same direction as the first steering, the coil running direction after the deflection forms an angle of 0° with the initial feeding direction of the coil, that is, the same as the original coil running direction, and the A and B sides of the coil are reversed.

5. The coiled material floating turning device according to claim 1 or 2, characterized in that: The first steering suspension turning roller mechanism (200), the second steering suspension turning roller mechanism (300) and the third steering suspension turning roller mechanism all comprise a steering suspension turning roller (210), an air uniforming plate (220) arranged inside the steering suspension turning roller (210), a plurality of air outlet holes (230) arranged on the surface of the steering suspension turning roller (210) adjacent to the coiled material, an air inlet hole (240) arranged on the surface of the steering suspension turning roller (210) opposite to the coiled material, and an air supply component connected to the interior of the steering suspension turning roller (210).

6. The coiled material floating turning device according to claim 5, characterized in that: The first steering suspension flipping roller mechanism (200), the second steering suspension flipping roller mechanism (300) and the third steering suspension flipping roller mechanism further include an adjustable nozzle (250) arranged on the air outlet (230) and used for adjusting the air outlet speed.

7. The coiled material floating turning device according to claim 1 or 2, characterized in that: The mounting frame (100) comprises a first mounting frame (110) connected to the first steering suspension flipping roller mechanism (200), a second mounting frame (120) connected to the second steering suspension flipping roller mechanism (300) and horizontally rotatable relative to the first mounting frame (110), and a third mounting frame connected to the first mounting frame (110) or the second mounting frame (120) and horizontally rotatable relative to the first mounting frame (110) or the second mounting frame (120).

8. The coiled material floating turning device according to claim 1 or 2, characterized in that: The first steering suspension flipping roller mechanism (200), the second steering suspension flipping roller mechanism (300) and the third steering suspension flipping roller mechanism are non-contact air-floating suspension flipping roller mechanisms or magnetic suspension flipping roller mechanisms.

9. The coiled material floating turning device according to claim 1 or 2, characterized in that: It also includes a deviation correction mechanism (500) arranged on the mounting frame (100) and used to realize horizontal rotation between the steering suspension flipping roller mechanisms; wherein the deviation correction mechanism (500) includes a rotary shaft (510) passing through the mounting frame (100), a position sensor (520) corresponding to each steering suspension flipping roller mechanism and arranged on the mounting frame (100), and a rotary drive assembly (530) respectively connected to the rotary shaft (510) and the position sensor (520).

10. The coiled material floating turning device according to claim 1, characterized in that: The tension adjustment roller mechanism (400) comprises a tension detection roller (410) arranged on the side of the mounting frame (100) and having an axial direction perpendicular to the initial feeding of the coil, a plurality of tension adjustment roller assemblies (420) arranged on the side of the mounting frame (100) and having axial directions parallel to the axial direction of the tension detection roller (410), and a tension detection sensor (430) arranged corresponding to the tension detection roller (410).

11. The coiled material floating turning device according to claim 10, characterized in that: The tension adjustment roller assembly (420) comprises a swing arm (421) swingably mounted on the mounting frame (100), a tension adjustment rotary shaft (422) connected to a movable end of the swing arm (421) and having an axial direction perpendicular to the initial feeding direction of the coil, a tension adjustment roller (423) passing through the tension adjustment rotary shaft (422), and a swing arm driving unit (420) corresponding to the swing arm (421) and mounted on the mounting frame (100).

12. The coiled material floating turning device according to claim 1, characterized in that: It also includes a traction roller mechanism (600) disposed on the side of the mounting frame (100) and having an axial direction perpendicular to the initial feeding direction of the coil, and a pressure roller mechanism (700) disposed on the mounting frame (100) and having an axial direction parallel to the traction roller mechanism (600); wherein: The traction roller mechanism (600) comprises a traction roller assembly (610) whose axial direction is perpendicular to the initial feeding direction of the coiled material, and a traction drive assembly (620) connected to the traction roller assembly (610); The pressing roller mechanism (700) comprises a pressing roller assembly (710) whose axial direction is parallel to the axial direction of the traction roller assembly (610), and a pressing drive assembly (720) connected to the pressing roller assembly (710) and arranged on the mounting frame (100).

13. The coiled material floating turning device according to claim 12, characterized in that: It also includes a receiving roller mechanism (800) whose axial direction is perpendicular to the initial feeding direction of the coiled material and is arranged on two opposite sides of the mounting frame (100), and the axial direction of the receiving roller mechanism (800) is parallel to the axial directions of the traction roller assembly (610) and the pressure roller assembly (710).

14. A pole piece coating system, characterized in that: The invention comprises an unwinding device (10), a first coating device (20), a first oven (30), a coiled material floating turning device (40) as claimed in any one of claims 1 to 13, a first traction device (50), a second coating device (60), a second oven (70), a second traction device (80) and a winding device (90) which are arranged in sequence.

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