Self-adaptive leveling large-width pressing and winding roller

Abstract

The invention discloses a self-adaptive leveling large-width pressing and winding roller which comprises a support, an active adjusting mechanism, a self-adaptive leveling mechanism and a pressing roller body. The two brackets are oppositely arranged, and active adjusting mechanisms are arranged on the two brackets; the two active adjusting mechanisms are each of a telescopic structure, the telescopic ends of the two active adjusting mechanisms are each provided with a pressure sensor, and the two pressure sensors are connected with the two self-adaptive leveling mechanisms correspondingly. The two active adjusting mechanisms are used for performing telescopic adjustment until measurement results of the two pressure sensors meet preset requirements; the two self-adaptive leveling mechanisms are respectively provided with a self-aligning roller bearing, and a compression roller is rotationally mounted between the two self-aligning roller bearings; hard rubber lantern rings and flexible expansion lantern rings are sleeved outside a rotating shaft of the compression roller, and a plurality of hard rubber lantern rings and a plurality of flexible expansion lantern rings are alternately arranged; after the scheme is adopted, the problem that self-adaptive level adjustment of the pressing and winding roller cannot be realized in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the technical field of pressure rollers, and particularly to a wide-width pressure roller with adaptive leveling. Background Technology

[0002] In the electrode winding process of lithium battery manufacturing, the winding pressure roller needs to continuously adhere to the surface of the material roll to ensure the roll's compactness. However, most existing pressure rollers are rigid and fixed structures. When the surface of the material roll becomes uneven due to uneven substrate thickness or fluctuations in winding tension, the pressure roller cannot adjust its level synchronously. This can easily lead to excessive local stress on the electrode, causing damage, or insufficient stress, resulting in wrinkles, which directly affects the capacity and cycle life of the lithium battery.

[0003] Therefore, there is an urgent need for an adaptive level take-up pressure roller to solve this problem. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptively leveling wide-width pressure roll to solve the problem that existing technologies cannot achieve adaptive leveling of pressure rolls.

[0005] To address the aforementioned technical problems, this invention provides an adaptive leveling wide-width pressure roller, comprising a support, an active adjustment mechanism, an adaptive leveling mechanism, and a pressure roller; two supports are arranged opposite to each other, and each support is equipped with the active adjustment mechanism; both active adjustment mechanisms are telescopic structures, and each telescopic end of each active adjustment mechanism is equipped with a pressure sensor, which is connected to the two adaptive leveling mechanisms respectively. Based on the measurement results of the two pressure sensors, the two active adjustment mechanisms are used to perform telescopic adjustment until the measurement results of the two pressure sensors meet preset requirements; each adaptive leveling mechanism is equipped with a self-aligning roller bearing, and the pressure roller is rotatably mounted between the two self-aligning roller bearings; the rotating shaft of the pressure roller is sleeved with a hard rubber sleeve and a flexible expansion sleeve, and multiple hard rubber sleeves and multiple flexible expansion sleeves are arranged alternately.

[0006] In one embodiment, both supports are provided with guide rails, both guide rails are slidably mounted with sliding supports, and both sliding supports are provided with the adaptive leveling mechanism.

[0007] In one embodiment, the adaptive leveling mechanism further includes a bearing housing and springs; the bearing housing is disposed on the sliding bracket, and the self-aligning roller bearing is disposed on the bearing housing; a plurality of springs are arranged around the outer periphery of the bearing housing, and the plurality of springs are compressed between the bearing housing and the sliding bracket.

[0008] In one embodiment, the bearing seat has a seat groove on its outer peripheral side; the sliding bracket has a bracket groove on its surface; and the two ends of the spring are respectively embedded in the seat groove and the bracket groove.

[0009] In one embodiment, both of the active adjustment mechanisms are cylinders.

[0010] In one embodiment, the pressure roller is detachably connected to the plurality of rigid rubber sleeves; the pressure roller is detachably connected to the plurality of flexible expansion sleeves; and both the rigid rubber sleeves and the flexible expansion sleeves have multiple optional sizes with different lengths.

[0011] In one embodiment, the surface of the hard rubber collar is covered with a wear-resistant rubber layer.

[0012] In one embodiment, the wear-resistant adhesive layer is a polytetrafluoroethylene wear-resistant layer.

[0013] In one embodiment, the surface of the hard rubber collar is covered with a ceramic layer.

[0014] In one embodiment, the flexible expansion sleeve includes an annular base, air expansion components, and an elastic rubber sleeve; the annular base is fitted around the rotating shaft of the pressure roller; a plurality of air expansion components are arranged around the outer periphery of the annular base; and the elastic rubber sleeve is wrapped around the plurality of air expansion components.

[0015] The beneficial effects of this invention are as follows: 1. After setting the adaptive leveling mechanism, the present invention can adjust the horizontal state of the pressure roller in real time and automatically, completely solving the problem that traditional rigid pressure rollers cannot adapt to uneven material rolls, and significantly improving the winding quality of lithium battery electrode sheets. 2. The wear-resistant rubber layer on the surface of the pressure roller and the precise pressure control (0.2-0.5MPa) can effectively prevent the electrode sheets from being scratched and crushed, ensuring the electrical performance and service life of the lithium battery; 3. The overall structure is compact and can be directly adapted to the existing lithium battery manufacturing winding process without the need for large-scale equipment modification. It is highly practical and easy to promote industrialization. 4. The hard rubber sleeve and flexible expansion sleeve are arranged alternately in the pressure roller. On the one hand, they can be flexibly matched according to the position and width of the electrode lugs on the electrode sheet. On the other hand, since the width of the pressure roller is too long, the processing accuracy is reduced. The alternating arrangement of hard rubber sleeve and flexible expansion sleeve can make up for the processing error. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the adaptive leveling mechanism; Figure 3 yes Figure 1 A schematic diagram of the flexible expansion ring structure.

[0018] The attached figures are labeled as follows: 100. Bracket; 110. Guide rail; 120. Sliding bracket; 121. Groove on the bracket; 200. Active adjustment mechanism; 210. Pressure sensor; 300. Self-adjusting leveling mechanism; 310. Self-aligning roller bearing; 320. Bearing housing; 321. Seat groove; 330. Spring; 400. Pressure roller; 410. Hard rubber collar; 420. Flexible expansion collar; 421. Annular base; 422. Air expansion component; 423. Elastic rubber sleeve; 500, material rolls. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] This invention provides an adaptive leveling wide-width pressure roll, such as... Figure 1 As shown, it includes a support 100, an active adjustment mechanism 200, an adaptive leveling mechanism 300, and a pressure roller 400.

[0021] Regarding the bracket 100, as an integral support structure, it can be fixedly connected to the frame of the lithium battery winding machine for mounting the pressure roller 400 and various functional units, specifically as follows: Figure 1 As shown, in this embodiment, two supports 100 are arranged opposite to each other, and each support 100 is provided with an active adjustment mechanism 200.

[0022] Regarding the active adjustment mechanism 200, as Figure 1As shown, in this embodiment, both active adjustment mechanisms 200 are telescopic structures. Each telescopic end of the active adjustment mechanism 200 is equipped with a pressure sensor 210. The two pressure sensors 210 are respectively connected to two adaptive leveling mechanisms 300. Based on the measurement results of the two pressure sensors 210, the two active adjustment mechanisms 200 are used to perform telescopic adjustment until the measurement results of the two pressure sensors 210 meet the preset requirements.

[0023] Specifically, both active adjustment mechanisms 200 are cylinders. The non-extension ends of the two cylinders are connected to the two supports 100 respectively, and the extension ends of the two cylinders are connected to the two adaptive leveling mechanisms 300 through pressure sensors 210 respectively. Therefore, the two pressure sensors 210 can monitor the force at both ends of the pressure roller 400, and then the two cylinders can be adjusted to make the two sides of the pressure roller 400 and the material roll 500 fit together at all times.

[0024] For example, if the pressure measured by the left pressure sensor 210 is less than the pressure measured by the right pressure sensor 210, the extension of the left cylinder can be increased. Similarly, if the pressure measured by the right pressure sensor 210 is less than the pressure measured by the left pressure sensor 210, the extension of the right cylinder can be increased, thereby ensuring that the two sides of the pressure roller 400 can still maintain close contact with the material roll 500 as the size of the material roll 500 changes.

[0025] Obviously, in general applications, for the measurement results of the two pressure sensors 210 to meet the preset requirements, the measurement results of the two pressure sensors 210 should be as consistent as possible. However, in some special cases, this may not be the case. Therefore, the specific preset requirements need to be determined by technicians based on the actual application.

[0026] To ensure stable movement control of the pressure roller 400 by the active adjustment mechanism 200, such as... Figure 1 As shown, this embodiment also provides guide rails 110 on both brackets 100, sliding brackets 120 are slidably installed on both guide rails 110, and adaptive leveling mechanisms 300 are provided on both sliding brackets 120.

[0027] After adopting the above setting method, once the active adjustment mechanism 200 performs telescopic adjustment, the adaptive leveling mechanism 300 and the pressure roller 400 will move along the arrangement trajectory of the guide rail 110, thereby ensuring the smooth and accurate adjustment process of the pressure roller 400.

[0028] Regarding the adaptive leveling mechanism 300, as follows: Figure 1 and Figure 2As shown, in this embodiment, both self-aligning roller bearings 310 are provided in the two self-aligning roller bearings 310, and a pressure roller 400 is rotatably installed between the two self-aligning roller bearings 310, so that the pressure roller 400 has a certain self-aligning ability and realizes the adaptive fine adjustment between the pressure roller 400 and the material roll 500.

[0029] Among them, such as Figure 1 and Figure 2 As shown, this embodiment of the adaptive leveling mechanism 300 also includes a bearing seat 320 and a spring 330; the bearing seat 320 is disposed on the sliding bracket 120, and the bearing seat 320 is provided with a self-aligning roller bearing 310; a plurality of springs 330 are arranged around the outer periphery of the bearing seat 320, and the plurality of springs 330 are compressed between the bearing seat 320 and the sliding bracket 120.

[0030] With this setup, the multiple springs 330 act as dampers, which will reduce the vibration of the pressure roller 400 during adjustment.

[0031] Moreover from Figure 2 It can be seen that at this time, the outer peripheral side of the bearing seat 320 is provided with a seat groove 321; the surface of the sliding bracket 120 is provided with a bracket groove 121; the two ends of the spring 330 are respectively embedded in the seat groove 321 and the bracket groove 121.

[0032] By adopting this setting, the installation of spring 330 can be ensured to be secure.

[0033] Regarding the pressure roller 400, as Figure 1 As shown, in this embodiment, the rotating shaft of the pressure roller 400 is fitted with a hard rubber sleeve 410 and a flexible expansion sleeve 420, and the multiple hard rubber sleeves 410 and the multiple flexible expansion sleeves 420 are arranged alternately.

[0034] When applied, air can be injected into the flexible expansion ring 420 to make the flexible expansion ring 420 into a tight state. When it is subjected to external pressure, its buffer retracts inward and undergoes a slight deformation, forming a mutually compensating state with the hard rubber ring 410, ensuring that the pressure roller 400 can achieve better adhesion and contact with the material roll 500.

[0035] In this embodiment, the pressure roller 400 is detachably connected to a plurality of hard rubber sleeves 410; the pressure roller 400 is detachably connected to a plurality of flexible expansion sleeves 420; and the hard rubber sleeves 410 and the flexible expansion sleeves 420 each have a plurality of optional sizes with different lengths.

[0036] After adopting this configuration, technicians can select hard rubber collars 410 and flexible expansion collars 420 of different lengths and sizes to meet the usage requirements in different situations.

[0037] In addition, this embodiment also covers the surface of the hard rubber collar 410 with a wear-resistant adhesive layer, which not only ensures wear resistance but also avoids scratching the electrode. For example, setting the wear-resistant adhesive layer to be a polytetrafluoroethylene wear-resistant layer is a better choice.

[0038] Of course, the wear-resistant rubber layer is not the only option. It is also possible to cover the surface of the hard rubber collar 410 with a ceramic layer to prevent the edge of the electrode from scratching the pressure roller 400, which is also a better option.

[0039] Furthermore, such as Figure 1 and Figure 3 As shown, in this embodiment, the flexible expansion ring 420 includes an annular base 421, air expansion members 422, and an elastic rubber sleeve 423; the annular base 421 is sleeved around the rotating shaft of the pressure roller 400; a plurality of air expansion members 422 are arranged around the outer periphery of the annular base 421; and the elastic rubber sleeve 423 wraps around the plurality of air expansion members 422.

[0040] After adopting the above setting method, once air is injected into the air expansion component 422, the air expansion component 422 will expand, thereby causing the elastic sleeve 423 to expand outward, thus realizing the air expansion function of the flexible expansion ring 420.

[0041] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1.A large-width press roll with self-adaptive leveling, characterized in that, it comprises a bracket, a driving adjusting mechanism, a self-adaptive leveling mechanism and a press roll; two said brackets are oppositely arranged, and each of the two brackets is provided with the driving adjusting mechanism; each of the two driving adjusting mechanisms is a telescopic structure, and the telescopic end of each of the two driving adjusting mechanisms is provided with a pressure sensor, and the two pressure sensors are connected with the two self-adaptive leveling mechanisms respectively, and according to the measurement results of the two pressure sensors, the two driving adjusting mechanisms are used for telescopic adjustment until the measurement results of the two pressure sensors meet the preset requirements; each of the two self-adaptive leveling mechanisms is provided with a self-aligning roller bearing, and the press roll is rotatably installed between the two self-aligning roller bearings; the rotating shaft of the press roll is sleeved with a hard rubber sleeve ring and a flexible expansion sleeve ring, and a plurality of hard rubber sleeve rings and a plurality of flexible expansion sleeve rings are alternately arranged. 2.The large-width press roll according to claim 1, characterized in that, each of the two brackets is provided with a guide straight rail, each of the two guide straight rails is slidably installed with a sliding bracket, and each of the two sliding brackets is provided with the self-adaptive leveling mechanism. 3.The large-width press roll according to claim 2, characterized in that, the self-adaptive leveling mechanism further comprises a bearing seat and a spring; the bearing seat is arranged on the sliding bracket, and the bearing seat is provided with the self-aligning roller bearing; a plurality of spring compressions are arranged around the outer circumferential side of the bearing seat, and the plurality of spring compressions are compressed between the bearing seat and the sliding bracket. 4.The large-width press roll according to claim 3, characterized in that, the outer circumferential side of the bearing seat is provided with a seat recess; the surface of the sliding bracket is provided with a bracket recess; the two ends of the spring are respectively embedded in the seat recess and the bracket recess. 5.The large-width press roll according to claim 1, characterized in that, each of the two driving adjusting mechanisms is a pneumatic cylinder. 6.The large-width press roll according to claim 1, characterized in that, the press roll and the plurality of hard rubber sleeve rings are detachably connected; the press roll and the plurality of flexible expansion sleeve rings are detachably connected; the hard rubber sleeve ring and the flexible expansion sleeve ring each have a plurality of optional sizes with different lengths. 7.The large-width press roll according to claim 1, characterized in that, the surface of the hard rubber sleeve ring is covered with a wear-resistant rubber layer. 8.The large-width press roll according to claim 7, characterized in that, the wear-resistant rubber layer is a polytetrafluoroethylene wear-resistant layer. 9.The large-width press roll according to claim 1, characterized in that, the surface of the hard rubber sleeve ring is covered with a ceramic layer. 10.The large-width press roll according to claim 1, characterized in that, the flexible expansion sleeve ring comprises a ring-shaped base body, a gas expansion piece and an elastic rubber sleeve; the ring-shaped base body is sleeved on the rotating shaft of the press roll; a plurality of gas expansion pieces are arranged around the outer circumferential side of the ring-shaped base body; the elastic rubber sleeve is wrapped outside the plurality of gas expansion pieces.

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