Air floating roller with adjustable wrap angle

Abstract

The utility model discloses an adjustable wrap angle air floating roller which comprises a roller body, an adjusting sheet and an adjusting mechanism, and the roller body is provided with an air outlet hole. The position of the adjusting piece relative to the roller body is adjusted through the adjusting mechanism, the communication state of the air outlet hole and the inner cavity is controlled, and therefore the air outlet wrap angle direction of the roller body is adjusted. Wrap angles are flexibly adjusted according to actual wrap angle conditions, so that the floating heights of the pole pieces are uniform, and the pole pieces are prevented from shaking. The air floating roller is high in universality and easy and convenient to operate, effectively avoids the use limitation of a traditional air floating roller with a fixed wrap angle, and brings remarkable advantages to lithium battery production.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery production especially relates to an adjustable wrap angle air floatation roller. BACKGROUND

[0002] In the current lithium battery production industry, coating as an important front process of lithium battery production, its coating quality directly affects the quality and life of lithium battery. The pole piece as an important component of lithium battery, both upper and lower surfaces need to be coated with slurry. When adopting double-sided simultaneous coating process, in order to avoid the damage of the traditional over roller to the slurry on the pole piece and damage the coating, air floatation roller is usually used to non-contact support the pole piece.

[0003] The air floatation roller is a non-contact type over roller, which is provided with a micro hole for air outlet within a specified angle of the roller surface. The air flow blows up the pole piece through the air outlet hole. The pole piece is balanced with the air floatation force under the action of traction force, forming an air film to realize non-contact support. However, in actual production, due to the influence of the belt running mode, the wrap angle between the pole piece and the roller is not fixed, and is affected by the running direction and speed. It is often necessary to fine-tune the air outlet wrap angle direction to make the pole piece floating height uniform. However, the existing fixed wrap angle air floatation roller has the problems of limited use range and troublesome debugging. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an adjustable wrap angle air floatation roller to improve the versatility and ease of use of the air floatation roller.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] An adjustable wrap angle air floatation roller, comprising:

[0007] A roller body having an inner cavity, the surface of the roller body is distributed with air outlet holes communicating with the inner cavity;

[0008] An adjusting piece arranged in the inner cavity and attached to the inner wall of the roller body;

[0009] An adjusting mechanism located at one end of the roller body and in transmission connection with the adjusting piece, for adjusting the position of the adjusting piece relative to the inner wall of the roller body to control the communication state of the air outlet holes and the inner cavity.

[0010] Further, the roller body is a cylindrical structure, the adjusting piece has an arc surface structure extending along the axial direction of the roller body, and the adjusting piece can rotate along the central axis of the roller body to adjust the air outlet area of the roller body.

[0011] Further, the roller body is provided with a fixed seat at both ends, and the fixed seat is provided with an air inlet;

[0012] The adjustment mechanism includes an adjustment shaft, a friction wheel, and an adjustment handle. The friction wheel is fixedly connected to the adjustment shaft and abuts against the adjustment plate. The adjustment shaft passes through a fixed seat and is fixedly connected to the adjustment handle. By rotating the adjustment handle, the adjustment shaft is driven to rotate, which in turn drives the adjustment plate to rotate within the roller body via the friction wheel, thereby adjusting the position of the adjustment plate relative to the inner wall of the roller body and controlling the communication state between the air outlet and the inner cavity.

[0013] Furthermore, the fixed seat is also provided with a connecting seat on the side facing the inner cavity, and the connecting seat is fixedly connected to the fixed seat;

[0014] There is a gap between the connecting seat and the inner wall of the roller body, and the adjusting plate can move within the gap;

[0015] The connecting seat is equipped with a self-aligning bearing, and the adjusting shaft passes through the fixed seat and is then connected to the friction wheel through the self-aligning bearing.

[0016] Furthermore, the connecting seat is provided with an angle ruler on the side facing the fixed seat, the adjusting plate is provided with a pointer, and the fixed seat is provided with an arc-shaped window corresponding to the position of the angle ruler; when adjusting the adjusting plate, the rotation angle of the adjusting plate is indicated by the position of the pointer relative to the angle ruler.

[0017] Furthermore, the adjusting shaft can move relative to the fixed seat in a direction toward the axis of the roller body;

[0018] After adjusting the adjustment plate to the corresponding position, turn the adjustment handle to make the friction wheel press the adjustment plate tightly through the lever action.

[0019] Furthermore, it also includes a fixing plate, which has an arc-shaped structure corresponding to the adjusting plate and is fixedly connected to the inner wall of the roller; the adjusting plate is located on one or both sides of the fixing plate.

[0020] Furthermore, the side wall of the fixed base is provided with a fixing bolt corresponding to the position of the adjusting shaft. The adjusting fixing bolt can be used to fix the adjusting shaft to the fixed base.

[0021] Furthermore, it also includes a pressure equalization component, which is disposed in the inner cavity and divides the inner cavity into an air inlet cavity and a pressure equalization cavity that are interconnected. The air inlet cavity is connected to the air inlet of the roller body, and the pressure equalization cavity is connected to the air outlet.

[0022] Furthermore, the pressure equalizing component is a cylindrical structure with both ends fixedly connected to the connecting seat. Both ends of the pressure equalizing component are provided with air outlet channels along their circumference to realize the communication between the air inlet chamber and the pressure equalizing chamber.

[0023] The beneficial effects of this utility model are:

[0024] This invention relates to an adjustable wrap angle air flotation roller. By incorporating an adjusting plate and mechanism within the roller body, the communication state between the air outlet and the inner cavity is controlled, thereby adjusting the air wrap angle direction of the roller. The wrap angle can be flexibly adjusted according to the actual wrap angle, ensuring uniform electrode floating height and preventing electrode vibration. This air flotation roller is highly versatile, easy to operate, and effectively avoids the limitations of traditional fixed wrap angle air flotation rollers, bringing significant advantages to lithium battery production. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a cross-sectional structural schematic diagram of the present invention - 1;

[0028] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0029] Figure 4 This is a cross-sectional structural schematic diagram of the present invention - 2;

[0030] Figure 5 This is a side view of the present invention;

[0031] Figure 6 This is a cross-sectional structural schematic diagram of the present invention - 3.

[0032] in,

[0033] 100. Roller body;

[0034] 110. Pressure equalizing component; 111. Air outlet channel; 120. Inner cavity; 121. Air inlet cavity; 122. Pressure equalizing cavity; 130. Air outlet; 140. Fixing base; 141. Arc-shaped window; 142. Fixing bolt; 143. Air inlet;

[0035] 150. Connecting seat; 151. Self-aligning bearing; 152. Angle gauge;

[0036] 200. Adjustment scale; 210. Pointer;

[0037] 300. Adjustment mechanism; 310. Adjustment shaft; 320. Friction wheel; 330. Adjustment handle. Detailed Implementation

[0038] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0039] Due to the influence of the belt conveyor method, the wrap angle between the electrode and the roller is not fixed and is affected by changes in the belt conveyor direction and speed. Therefore, fine-tuning of the air outlet wrap angle is frequently required to maintain the uniformity of the electrode's floating height. Existing air flotation rollers, however, have a fixed air outlet wrap angle, which limits their application in such situations and makes adjustments cumbersome. For example, when the electrode winding wrap angle is greater than the set wrap angle, the lack of air outlets at the edges results in extremely low air pressure at the edges, causing the electrode to adhere tightly to the roller surface. Once this adhesion occurs, the gas flowing from the roller surface cannot escape, and the gas within the air film, after accumulating sufficient pressure, will blow out from the edges. After the gas is blown out, the edge electrode again adheres tightly to the roller surface, and this cycle repeats, causing the electrode to vibrate. This vibration not only damages the slurry on the electrode but can also cause belt breakage in severe cases. Therefore, the adjustable wrap angle air flotation roller of this invention provides the required air outlet angle for different wrap angle conditions by adjusting the air outlet area of ​​the roller body, thus better supporting the electrode.

[0040] Reference Figures 1-3 An adjustable-angle air flotation roller includes a roller body 100, an adjusting plate 200 disposed within the roller body 100, and an adjusting mechanism 300 for adjusting the adjusting plate 200. The roller body 100 has an inner cavity 120, and air outlets 130 communicating with the inner cavity 120 are distributed on the surface of the roller body 100. The adjusting plate 200 is disposed within the inner cavity 120 and attached to the inner wall of the roller body 100. The adjusting mechanism 300 is located at one end of the roller body 100 and is kinetically connected to the adjusting plate 200, used to adjust the position of the adjusting plate 200 relative to the inner wall of the roller body 100, thereby controlling the communication state between the air outlets 130 and the inner cavity 120. It is understood that the adjusting mechanism 300 can be used to adjust the position of the adjusting plate 200, and by controlling the communication state between the air outlets 130 and the inner cavity 120, the air outlet area of ​​the roller body 100 can be adjusted.

[0041] In some embodiments, the air outlet 130 on the surface of the roller body 100 is a dense hole (not shown). After the gas in the inner cavity 120 passes through the air outlet 130, it forms a gas film on the surface of the roller body 100, and the gas film supports the electrode sheet during the conveying process.

[0042] In some embodiments, refer to Figures 1-3 The roller body 100 has a cylindrical structure, and the adjusting plate 200 has an arc-shaped structure extending along the axial direction of the roller body 100. The adjusting plate 200 can rotate along the central axis of the roller body 100 to adjust the air outlet area of ​​the roller body 100. The adjusting plate 200 adopts a fan-shaped spiral surface structure. By rotating along the central axis of the roller body 100, the size of the air outlet area can be precisely controlled, so that the airflow can be evenly distributed during the adjustment process, avoiding uneven airflow or excessive local airflow, and ensuring the stability and uniformity of the air outlet.

[0043] Furthermore, refer to Figure 3 , 4 The roller body 100 has fixed seats 140 at both ends, and the fixed seats 140 have air inlets 143. The adjustment mechanism 300 includes an adjustment shaft 310, a friction wheel 320, and an adjustment handle 330. The friction wheel 320 is fixedly connected to the adjustment shaft 310 and abuts against the adjustment plate 200. The adjustment shaft 310 passes through the fixed seats 140 and is fixedly connected to the adjustment handle 330. By rotating the adjustment handle 330, the adjustment shaft 310 is driven to rotate, which in turn drives the adjustment plate 200 to rotate inside the roller body 100 through the friction wheel 320, thereby adjusting the position of the adjustment plate 200 relative to the inner wall of the roller body 100, thus controlling the communication state between the air outlet 130 and the inner cavity 120. It can be understood that when gas is introduced, under the action of air pressure, the adjustment plate 200 will be tightly attached to the inner wall of the roller body 100, blocking the gas from flowing out. Rotating the adjustment handle 330 drives the friction wheel 320 to rotate, where the friction wheel 320 abuts against the adjustment plate 200. When the friction wheel 320 rotates, the friction between the friction wheel 320 and the adjustment plate 200 can drive the adjustment plate 200 to move, thereby achieving the purpose of adjusting the air outlet area.

[0044] In some embodiments, the fixed seat 140 is further provided with a connecting seat 150 on the side facing the inner cavity 120, and the connecting seat 150 is fixedly connected to the fixed seat 140; there is a gap between the connecting seat 150 and the inner wall of the roller body 100, and the adjusting plate 200 can move within the gap; a self-aligning bearing 151 is provided on the connecting seat 150, and the adjusting shaft 310 passes through the fixed seat 140 and is then connected to the friction wheel 320 through the self-aligning bearing 151. It can be understood that the adjusting shaft 310 is more stable during rotation through two force points, namely the fixed seat 140 and the connecting seat 150, reducing the shaking and offset caused by the friction between the adjusting plate 200 and the inner wall of the roller body 100.

[0045] Furthermore, refer to Figures 1-3 The adjusting shaft 310 can move relative to the fixed seat 140 towards the axis of the roller body 100. After the adjusting plate 200 is adjusted to the corresponding position, the adjusting handle 330 is turned, and the friction wheel 320 presses the adjusting plate 200 tightly through leverage. This ensures that the adjusting plate 200 remains stable after being positioned and will not shift due to changes in air pressure inside the roller body 100 or external vibrations. The pressing force of the friction wheel 320 on the adjusting plate 200 effectively prevents the adjusting plate 200 from loosening during operation.

[0046] Furthermore, refer to Figure 4 The side wall of the fixed base 140 is provided with a fixing bolt 142 corresponding to the position of the adjusting shaft 310. The fixing bolt 142 can be used to fix the adjusting shaft 310 to the fixed base 140. It can be understood that when the adjusting piece 200 is in a certain position, the adjusting shaft 310 can be further fixed by the fixing bolt 142, so that the friction wheel 320 can press the adjusting piece 200 against the inner wall surface of the roller body 100, preventing the adjusting piece 200 from sliding relative to the roller body 100 during use, thereby improving stability.

[0047] Furthermore, refer to Figure 5 The connecting seat 150 has an angle gauge 152 on the side facing the fixed seat 140, and the adjusting plate 200 has a pointer 210. The fixed seat 140 has an arc-shaped window 141 corresponding to the position of the angle gauge 152. When adjusting the adjusting plate 200, the position of the pointer 210 relative to the angle gauge 152 indicates the rotation angle of the adjusting plate 200. This improves the accuracy and operability of the adjustment. Users can intuitively observe the position of the pointer 210 on the angle gauge 152 through the arc-shaped window 141, accurately grasp the rotation angle of the adjusting plate 200, and thus make more precise adjustments according to actual needs, ensuring that the air-bearing roller achieves optimal working condition in different working scenarios.

[0048] In some embodiments, refer to Figures 1-3 The system also includes a fixing plate (not shown), which has an arc-shaped structure corresponding to the adjusting plate and is fixedly connected to the inner wall of the roller body 100; the adjusting plate 200 is located on one or both sides of the fixing plate. It can be understood that the surface of the roller body 100 is a roller surface capable of 360-degree airflow. The fixing plate can block the bottom airflow position, and the adjusting plate 200 can rotate to adjust its position for blocking. By adjusting the airflow area, the airflow wrap angle is adjusted. To meet the wrap angle requirements under different working conditions, the adjusting plate can be placed on either side of the fixing plate, or on both sides of the fixing plate. When the adjusting plate 200 is placed on both sides of the fixing plate, adjusting the adjusting plates 200 on both sides of the fixing plate simultaneously allows for more flexible handling of different wrap angle requirements.

[0049] In some embodiments, no fixing piece is provided, see reference. Figure 6 Two adjusting plates 200 are set, which partially overlap. Two adjusting mechanisms 300 are used to adjust the two adjusting plates 200. By adjusting, the two adjusting plates 200 can be moved in different directions. During the adjustment process, the overlapping part can always block the gas from flowing out.

[0050] In some embodiments, refer to Figure 2 , 4 It also includes a pressure equalization component 110, which is disposed in the inner cavity 120 and divides the inner cavity 120 into an air inlet cavity 121 and a pressure equalization cavity 122 that are interconnected. The air inlet cavity 121 is connected to the air inlet 143 of the roller body 100, and the pressure equalization cavity 122 is connected to the air outlet 130.

[0051] Reference Figure 2 The pressure equalizing component 110 is a cylindrical structure with both ends fixedly connected to the connecting seat 150. Both ends of the pressure equalizing component 110 have circumferentially arranged air outlet channels 111 for connecting the air inlet chamber 121 and the pressure equalizing chamber 122. It can be understood that the inner cavity 120 of the air-bearing roller body 100 of this invention is divided into an air inlet chamber 121 and a pressure equalizing chamber 122. Gas enters the pressure equalizing chamber 122 through the air outlet channels 111 from the air inlet chamber 121. Under the action of the pressure equalizing component 110, the dynamic pressure decreases, the static pressure increases, and the pressure becomes more uniform. Then, the gas is discharged from the surface of the roller body 100 through the air outlet channels 111 and contacts the electrode, further reducing the gas dynamic pressure and increasing the static pressure. Because the electrode has a traction force, at a certain distance, the resultant force of the electrode's traction force will balance the resultant force of the gas pressure, forming an air film and achieving contactless support.

[0052] Therefore, the adjustable wrap angle air bearing roller of this utility model, by adjusting the position of the adjusting plate 200 and controlling the communication state between the air outlet 130 and the inner cavity 120, allows the airflow to flow out only at a specified angle, adjusts the air outlet area of ​​the roller body 100, and adjusts the wrap angle, thereby preventing excess airflow from interfering with the electrode tape travel and saving energy.

[0053] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An adjustable wrap angle air flotation roller, characterized in that, include: The roller body has an inner cavity, and air outlet holes communicating with the inner cavity are distributed on the surface of the roller body; An adjusting plate is disposed within the inner cavity and attached to the inner wall of the roller body; An adjustment mechanism, located at one end of the roller body and connected to the adjustment plate in a transmission manner, is used to adjust the position of the adjustment plate relative to the inner wall of the roller body in order to control the communication state between the air outlet and the inner cavity.

2. The adjustable wrap angle air flotation roller according to claim 1, characterized in that, The roller body has a cylindrical structure, and the adjusting plate has an arc surface structure extending along the axial direction of the roller body. The adjusting plate can rotate along the central axis of the roller body to adjust the air outlet area of ​​the roller body.

3. The adjustable wrap angle air flotation roller according to claim 2, characterized in that, The roller body is provided with fixed seats at both ends, and the fixed seats are provided with air inlets; The adjustment mechanism includes an adjustment shaft, a friction wheel, and an adjustment handle. The friction wheel is fixedly connected to the adjustment shaft and abuts against the adjustment plate. The adjustment shaft passes through a fixed seat and is fixedly connected to the adjustment handle. By rotating the adjustment handle, the adjustment shaft is driven to rotate, which in turn drives the adjustment plate to rotate within the roller body via the friction wheel, thereby adjusting the position of the adjustment plate relative to the inner wall of the roller body and controlling the communication state between the air outlet and the inner cavity.

4. The adjustable wrap angle air flotation roller according to claim 3, characterized in that, The fixed seat is also provided with a connecting seat on the side facing the inner cavity, and the connecting seat is fixedly connected to the fixed seat; There is a gap between the connecting seat and the inner wall of the roller body, and the adjusting plate can move within the gap; The connecting seat is equipped with a self-aligning bearing, and the adjusting shaft passes through the fixed seat and is then connected to the friction wheel through the self-aligning bearing.

5. The adjustable wrap angle air flotation roller according to claim 4, characterized in that, An angle ruler is provided on the side of the connecting seat facing the fixed seat, and a pointer is provided on the adjusting plate. An arc-shaped window is provided on the fixed seat corresponding to the position of the angle ruler. When adjusting the adjusting plate, the rotation angle of the adjusting plate is indicated by the position of the pointer relative to the angle ruler.

6. The adjustable wrap angle air flotation roller according to claim 4, characterized in that, The adjusting shaft can move relative to the fixed seat in the direction toward the center of the roller body; After adjusting the adjustment plate to the corresponding position, turn the adjustment handle to make the friction wheel press the adjustment plate tightly through the lever action.

7. The adjustable wrap angle air flotation roller according to claim 2, characterized in that, It also includes a fixing plate, which has an arc-shaped structure corresponding to the adjusting plate and is fixedly connected to the inner wall of the roller; the adjusting plate is located on one or both sides of the fixing plate.

8. The adjustable wrap angle air flotation roller according to claim 3, characterized in that, The side wall of the fixed base is provided with a fixing bolt corresponding to the position of the adjusting shaft. The adjusting fixing bolt can be used to fix the adjusting shaft to the fixed base.

9. The adjustable wrap angle air flotation roller according to claim 4, characterized in that, It also includes a pressure equalization component, which is disposed in the inner cavity and divides the inner cavity into an air inlet cavity and a pressure equalization cavity that are interconnected. The air inlet cavity is connected to the air inlet of the roller body, and the pressure equalization cavity is connected to the air outlet.

10. The adjustable wrap angle air flotation roller according to claim 9, characterized in that, The pressure equalizing component is a cylindrical structure with its two ends fixedly connected to the connecting seat. Both ends of the pressure equalizing component are provided with air outlet channels along their circumference to realize the communication between the air inlet chamber and the pressure equalizing chamber.

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