Press roll device and method for adjusting the same

Abstract

This invention discloses a pressure roller device and its adjustment method, belonging to the field of battery manufacturing technology. The pressure roller device includes: a roller shaft, which includes a first end, an elastic part, and a second end, with the elastic part disposed between the first end and the second end; and an anti-wrinkle part, which is sleeved on the elastic part and includes a first collar. The outer periphery of the first collar contacts the electrode sheet, and the direction of movement of the electrode sheet does not coincide with the direction of frictional force generated by the first collar. This pressure roller device can solve the problem of wrinkles easily appearing in the tab clearance area of ​​existing electrodes.

Description

Technical Field

[0001] This invention belongs to the field of battery manufacturing technology, specifically relating to a pressure roller device and its adjustment method. Background Technology

[0002] During the battery electrode production process, coating and rolling processes are involved. Due to the influence of coating temperature, airflow frequency, and roller levelness, as well as the lateral deviation of the electrode sheets during production, wrinkles easily appear in the tab blank area, affecting normal electrode production. With increasing demands for energy density and processing efficiency, plans are underway to introduce thinner and wider substrates, further exacerbating the risk of wrinkles and blank areas on the tabs. Summary of the Invention

[0003] Objective of the invention: The present invention provides a pressure roller device to solve the problem that wrinkles easily occur in the blank area of ​​the electrode tab of existing electrodes; another objective of the present invention is to provide an adjustment method for the pressure roller device to solve the problem of lateral deviation of the electrode during the production process.

[0004] Technical Solution: This invention provides a pressure roller device, comprising: a roller shaft including a first end, an elastic portion, and a second end, the elastic portion being disposed between the first end and the second end; and an anti-wrinkle portion sleeved on the elastic portion, the anti-wrinkle portion including a first collar, the outer periphery of the first collar contacting the electrode sheet, and the direction of movement of the electrode sheet not coinciding with the direction of frictional force generated by the first collar. By applying external force to the first end and the second end of the roller shaft, and utilizing the elastic force of the elastic portion, bending deformation of the roller shaft can be achieved, even large-angle bending deformation of the roller shaft, thus maintaining the lateral tensile force on the electrode sheet around the first collar and improving electrode wrinkling.

[0005] In some embodiments, a second collar is further included, disposed between the elastic portion and the first collar. The second collar is connected to the elastic portion, and the connection method includes a fixed connection or a sliding connection. The second collar is fixedly connected to the elastic portion, and the second collar acts as a bushing structure for the first collar, enabling the first collar to be more effectively fitted onto the outer periphery of the elastic portion.

[0006] In some embodiments, the first collar includes an inner layer and a wrapping layer, the wrapping layer covering the inner layer. The wrapping layer corresponds to a plating layer on the outer surface of the inner layer.

[0007] In some embodiments, the encapsulation layer includes a polytetrafluoroethylene (PTFE) coating; the inner layer includes an adhesive layer. The PTFE coating of the encapsulation layer and the adhesive layer of the inner layer are structurally designed to be combined, forming a first ring nested within a second ring. The friction generated by the outer periphery of the encapsulation layer contacting the electrode drives the electrode to move, equivalent to relative movement between the first ring and the electrode. The material design of the encapsulation layer effectively increases friction.

[0008] In some embodiments, the roller shaft further includes a central shaft, the central shaft including a first end and a second end; the elastic portion includes an elastic sleeve, the elastic sleeve being circumferentially disposed around the outer periphery of the central shaft, and the elastic sleeve being located between the first end and the second end; a second collar is connected to the outer periphery of the elastic sleeve; the first collar is coaxially engaged with the elastic sleeve and the central shaft. Since the axis of the first collar or the second collar is aligned with the axis of the elastic sleeve, the electrode sheets on the third surface of the roller shaft are kept under lateral tension, thus improving electrode wrinkling.

[0009] In some embodiments, the device further includes ball bearings disposed between the first and second collars. The ball bearings are designed to allow the first collar to rotate and slide more easily than the second collar. It should be understood that the first collar, ball bearings, and second collar are assembled to form a bearing structure, and the addition of ball bearings between the two collars facilitates the sliding of the electrode sheet.

[0010] This application also provides a method for adjusting a pressure roller device, including the following steps:

[0011] A first external force is applied to the first end of the roller shaft, and a second external force is applied to the second end of the roller shaft, causing the roller shaft to bend and deform.

[0012] The electrode moves along the first direction D1 on the outer periphery of the first ring;

[0013] By adjusting the first external force and the second external force, the roller shaft is bent and deformed, further stretching the electrode sheet.

[0014] In some embodiments, the first collar moves along the second direction D2 at a second speed v2, and the second direction D2 and the first direction D1 form a first angle θ1.

[0015] As the first included angle θ1 and the second speed v2 increase, the tensile force of the roller on the electrode increases.

[0016] In some embodiments, the second velocity v2 is decomposed into a first decomposed velocity v 21 Second decomposition velocity v 22 The first decomposition speed v 21The component of the second velocity v2 along the first direction D1 is the second velocity component, and the component of the second velocity v2 perpendicular to the first direction D1 is the second decomposed velocity v. 22 The first decomposition speed v 21 = v2*cosθ1, the second decomposition velocity v 22 =v2*sinθ1.

[0017] This application also provides a method for adjusting a pressure roller device, including the following steps:

[0018] A first external force is applied to the first end of the roller shaft, and a second external force is applied to the second end of the roller shaft, causing the roller shaft to bend and deform.

[0019] The electrode moves along the second direction D2 on the outer periphery of the first ring; the electrode includes a first target position and a second target position;

[0020] When the deformation at the first target position is greater than the deformation at the second target position, the first external force and the second external force are adjusted to stretch the electrode sheet along the roller axis at the first target position.

[0021] In some embodiments, at the first target position, the first loop moves along a third direction D3 at a third velocity v3, the third direction D3 and the first direction D1 forming a second angle θ2;

[0022] At the second target position, the first ring moves along the fourth direction D4 at a fourth velocity v4, and the fourth direction D4 and the first direction D1 form a third angle θ3.

[0023] When the deformation of the first target position is greater than the deformation of the second target position, the second included angle θ2 is greater than the third included angle θ3.

[0024] In some embodiments, the third velocity v3 is the component of the velocity v in the direction perpendicular to the first direction D1. 31 =v3*sinθ2;

[0025] The fourth velocity v4 is the component of the velocity v in the direction perpendicular to the first direction D1. 41 =v4*sinθ3;

[0026] When the deformation at the first target position is greater than the deformation at the second target position, the component velocity v 31 Greater than the component velocity v 41 .

[0027] Beneficial effects: Compared with the prior art, the pressure roller device provided by the present invention includes a roller shaft, which includes a first end, an elastic part, and a second end, with the elastic part disposed between the first end and the second end; and an anti-wrinkle part, which is sleeved on the elastic part and includes a first collar, the outer periphery of which contacts the electrode sheet, and the direction of movement of the electrode sheet does not coincide with the direction of the frictional force generated by the first collar. By applying external force to the first end and the second end of the roller shaft, the roller shaft is bent and deformed, which can keep the electrode sheet on the outer periphery of the first collar under lateral tension to improve the wrinkling of the electrode sheet.

[0028] Compared with existing technologies, the present invention provides an adjustment method for a pressure roller device. By adjusting a first external force and a second external force, the roller shaft is bent and deformed, increasing the deflection and bending deformation of the roller shaft, thereby increasing the lateral tensile force exerted by the roller shaft on the electrode sheet. It is understood that this adjustment method for the pressure roller device achieves the effect of easily flattening the electrode sheet without wrinkling, solving the problem of wrinkles easily appearing in the tab clearance area of ​​existing electrode sheets.

[0029] Compared with existing technologies, the present invention provides another method for adjusting a pressure roller device. When the deformation of the electrode at a first target position is greater than that at a second target position, the roller shaft is asymmetrically bent and deformed by adjusting a first external force and a second external force, thereby stretching the electrode shaft to the first target position. It can be understood that this method for adjusting the pressure roller device corrects the offset of the electrode at the outer periphery of the first ring, thus solving the problem of electrode misalignment during coating roller operation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of the pressure roller device according to an embodiment of the present invention;

[0032] Figure 2 yes Figure 1 Left view of the pressure roller assembly;

[0033] Figure 3 yes Figure 1 Schematic diagram of the appearance of the middle roller shaft;

[0034] Figure 4 This is a schematic cross-sectional view of the pressure roller device according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of one working state of the pressure roller device of the present invention;

[0036] Figure 6 This is a schematic diagram of another working state of the pressure roller device of the present invention;

[0037] Reference numerals: 100-roller shaft; 110-first end; 120-elastic part; 130-second end; 140-central shaft; 121-elastic sleeve; 210-first collar; 220-second collar; 300-ball; 400-electrode; 401-first target position; 402-second target position; 410-blank area. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Please see Figure 1This invention provides a pressure roller device for adjusting the pressure of an electrode sheet 400. The pressure roller device includes a roller shaft 100 and an anti-wrinkle part 200. The roller shaft 100 includes a first end 110, an elastic part 120, and a second end 130. The elastic part 120 is disposed between the first end 110 and the second end 130, that is, the first end 110, the elastic part 120, and the second end 130 are arranged sequentially from left to right and integrally formed into the roller shaft 100. It should be noted that the elastic design of the elastic part 120 is used to achieve large-angle bending deformation of the roller shaft 100. The anti-wrinkle part 200 is sleeved on the elastic part 120. The anti-wrinkle part 200 includes a first collar 210. The outer periphery of the first collar 210 contacts the electrode sheet 400, and the direction of movement of the electrode sheet 400 does not coincide with the direction of friction generated by the first collar 210.

[0041] In some preferred embodiments, the first ring 210 is a single-layer ring. The outer peripheral surface of the first ring 210 contacts the electrode 400 and generates friction, causing relative movement between the electrode 400 and the first ring 210. The first ring 210 includes an inner layer and a wrapping layer, with the wrapping layer covering the inner layer. The wrapping layer includes a polytetrafluoroethylene (PTFE) coating, and the inner layer includes an adhesive layer. The wrapping layer is equivalent to the coating on the outer surface of the inner layer, i.e., PTFE is used as the coating on the outer surface of the adhesive layer. The structural design combining the PTFE coating of the wrapping layer and the adhesive layer of the inner layer together forms the first ring 210.

[0042] Both the first end 110 and the second end 130 are connected to an external mechanism, which can be a hydraulic drive mechanism. By activating the external mechanism, such as the hydraulic drive mechanism, external force is applied to the first end 110 and the second end 120 to control the bending deformation of the roller 100, so that the electrode 400 on the outer periphery of the first collar 210 is subjected to lateral tension, thereby improving the wrinkling of the electrode 400.

[0043] In some other preferred embodiments, the pressure roller device further includes a second collar 220, which is disposed between the first collar 210 and the elastic part 120. The second collar 220 is connected to the elastic part 120 in a fixed connection manner. Furthermore, the second collar 220 and the elastic part 120 are integrally formed, and the second collar 220 is connected to the first collar 210 in a sliding connection manner. Furthermore, the outer periphery of the second collar 220 and the inner periphery of the first collar 210 are in surface contact sliding engagement.

[0044] The roller 100 also includes a central shaft 140, which includes a first end 110 and a second end 130, i.e., the first end 110 and the second end 120 are the two ends of the central shaft 140 respectively; the elastic part 120 includes an elastic sleeve 121, which is disposed on the outer periphery of the central shaft 140 and is located between the first end 110 and the second end 130, i.e., the roller 100 is an elastic roller.

[0045] In a preferred embodiment, the elastic sleeve 121 is a steel elastic sleeve, the central shaft 140 is a steel shaft, and the second ring 220 is made of steel. It should be confirmed that the inner circumference of the second ring 220 and the outer circumference of the elastic sleeve 121 are integrally formed and connected.

[0046] It should be noted that in this embodiment, the first ring 210 is nested around the outer periphery of the second ring 220 to form a double-layer ring. The first ring 210 includes an inner layer and a wrapping layer covering the outer surface of the inner layer. In this embodiment, the inner layer is a polytetrafluoroethylene coating and the wrapping layer is an adhesive material. The friction generated by the wrapping layer in contact with the electrode 400 drives the movement of the electrode 400 or the first ring 210. The material design of the wrapping layer can effectively increase the friction.

[0047] Furthermore, the pressure roller device also includes ball bearings 300, which are disposed between the first collar 210 and the second collar 220. The ball bearings 300 facilitate sliding between the first collar 210 and the second collar 220. That is, the double-ring structure formed between the second collar 220, the ball bearings 300, and the first collar 210 is equivalent to a bearing structure, which facilitates the sliding of the electrode 400 by the frictional force generated between the electrode 400 and the first collar 210.

[0048] Since the inner layer of the roller 100 is an elastic sleeve 121 and the outer layer of the roller 100 is a second collar 220, and the inner layer of the second collar 220 is a rubber material and the outer layer of the second collar 220 is a polytetrafluoroethylene coating, by applying external force to the first end 110 and the second end 130 of the roller 100, the roller 100 can bend and deform. The first collar 210, the second collar 220 and the elastic sleeve 121 are coaxially arranged, which can keep the electrode 400 on the roller 100 under lateral tension to improve the wrinkling of the electrode 400.

[0049] This application's pressure roller device includes a roller shaft 100, which includes a first end 110, an elastic portion 120, and a second end 130. The elastic portion 120 is disposed between the first end 110 and the second end 130. An anti-wrinkle portion 200 is sleeved on the elastic portion 120 and includes a first collar 210. The outer periphery of the first collar 210 contacts the electrode sheet 400, and the direction of movement of the electrode sheet 400 does not coincide with the direction of the frictional force generated by the first collar 210. By applying external force to the first end 110 and the second end 130 of the roller shaft 100, bending deformation of the roller shaft 100 is achieved, which keeps the electrode sheet 400 around the outer periphery of the first collar 210 under lateral tension to improve the wrinkling of the electrode sheet 400.

[0050] When the pressure roller device is working normally, pressure is applied to both ends of the roller 100 by driving the hydraulic mechanism to cause the roller 100 to bend. When the electrode 400 moves on the outer periphery of the roller 100, in response to the wrinkling phenomenon of the electrode 400, this application also provides an adjustment method for the pressure roller device, including the following steps:

[0051] Step 100: Apply a first external force to the first end 110 of the roller 100 and a second external force to the second end 130 of the roller 100 to cause the roller 100 to bend and deform.

[0052] In this step, when the values ​​of the first external force and the second external force are equal, the roller 100 undergoes symmetrical bending deformation;

[0053] Step 200: The electrode 400 moves along the first direction D1 around the outer periphery of the first ring 210;

[0054] In this step 200, the first ring 210 moves along the second direction D2 at a second speed v2, and the second direction D2 and the first direction D1 form a first angle θ1;

[0055] It should be noted that the first ring 210 includes a second direction D2 and a second velocity v2. The friction between the electrode 400 and the outer periphery of the first ring 210 drives the first ring 210 to move in the direction of the second direction D2, and the second velocity v2 is the velocity of the first ring 210 along the second direction D2.

[0056] In step 200, the second velocity v2 is decomposed into the first decomposed velocity v. 21 Second decomposition velocity v 22 The first decomposition velocity v 21 Let v2 be the component of the second velocity along the first direction D1, and v be the first component of the velocity. 21 = v2*cosθ1, which is the first decomposition velocity v 21The value is: the product of the cosine of the first included angle θ1 and the second velocity v2; and the component of the second velocity v2 perpendicular to the first direction D1 is the second decomposed velocity v. 22 The second decomposition velocity v 22 =v2*sinθ1, second decomposition velocity v 22 The cosine value is the product of the sine of the first included angle θ1 and the second velocity v2.

[0057] Step 300: By adjusting the first external force and the second external force, the roller 100 is bent and deformed, and the roller 100 is further stretched to stretch the electrode 400.

[0058] In this step 300, as the first included angle θ1 and the second speed v2 increase, the tensile force of the roller 100 on the electrode 400 increases.

[0059] The friction between the electrode 400 and the outer circumference of the first ring 210 of the roller 100 causes the first ring 210 to move. The direction of movement of the first ring 210, i.e., the second velocity v2, forms a first angle θ1 with the direction of movement of the electrode 400, i.e., the first direction D1, and the first decomposition velocity v of the second velocity v2 is also present. 21 = v2*cosθ1, the second decomposition velocity v of the second velocity v2 22 =v2*sinθ1, therefore, the greater the deflection of the roller 100, the greater the corresponding first included angle θ1, the greater the second speed v2, the greater the lateral tensile force on the electrode 400, and the easier it is for the electrode 400 to be flattened without wrinkling.

[0060] Compared with the prior art, the adjustment method of the pressure roller device provided by the present invention, by adjusting the first external force and the second external force, causes the roller shaft 100 to undergo symmetrical bending deformation, increasing the deflection bending deformation of the roller shaft 100, thereby increasing the lateral tensile force of the roller shaft 100 on the electrode sheet 400. It can be understood that this adjustment method of the pressure roller device achieves the effect of making the electrode sheet 400 easy to flatten without wrinkling, and can solve the problem that wrinkles easily appear in the blank area 410 of the electrode tab in existing electrodes.

[0061] This application also provides another method for adjusting the pressure roller device, especially addressing the problem of electrode misalignment during coating roller operation. Severe misalignment can cause severe lateral compression and wrinkling of the electrode 400. This can be addressed by applying external force to both ends of the roller shaft 100 to cause asymmetrical bending deformation of the elastic part 120. Specifically, the method for adjusting the pressure roller device includes the following steps:

[0062] Step 110: Apply a first external force to the first end 110 of the roller 100 and a second external force to the second end 130 of the roller 100 to cause the roller 100 to bend and deform.

[0063] In step 110, a first external force and a second external force can be applied to the roller 100 using a hydraulic mechanism that drives the peripheral device; wherein, when the value of the applied first external force is not equal to the value of the second external force, the roller 100 undergoes asymmetrical bending deformation;

[0064] Step 210: The electrode 400 moves along the second direction D2 around the outer periphery of the first ring 210; the electrode 400 includes a first target position 401 and a second target position 402;

[0065] At the first target position 401, the first ring 210 moves along the third direction D3 at a third velocity v3, and the third direction D3 and the first direction D1 form a second angle θ2.

[0066] Furthermore, at the second target position 402, the first ring 210 moves along the fourth direction D4 at the fourth velocity v4, and the fourth direction D4 and the first direction D1 form a third angle θ3.

[0067] Specifically, in this step 210, the electrode 400 moves along the outer periphery of the first ring 210, and the friction between the electrode 400 and the outer periphery of the first ring 210 drives the first ring 210 to move. The electrode 400 includes a first direction D1, which is the direction of movement of the electrode 400 on the outer periphery of the first ring 210.

[0068] Among them, at the first target position 401, the first ring 210 includes a third direction D3 and a third speed v3. The friction between the electrode 400 and the outer periphery of the first ring 210 drives the first ring 210 to move in the direction of the third direction D3, and the third speed v3 is the speed of the first ring 210 along the third direction D3.

[0069] Furthermore, at the second target position 402, the first collar 210 includes a fourth direction D4 and a fourth velocity v4. The friction between the electrode 400 and the outer periphery of the first collar 210 causes the first collar 200 to move along the roller 100 in the fourth direction D4; the fourth velocity v4 is the velocity of the first collar 210 along the fourth direction D4.

[0070] It should be further explained that the component of the third velocity v3 perpendicular to the first direction D1 is v 31 = v3*sinθ2, that is, the component of the third velocity v3 perpendicular to the first direction D1. 31 It is the product of the sine of the second included angle θ2 and the third velocity v3;

[0071] The fourth velocity v4 is the component of the velocity v in the direction perpendicular to the first direction D1. 41 = v4*sinθ3, that is, the component of the fourth velocity v4 perpendicular to the first direction D1.41 It is the product of the sine of the third included angle θ3 and the fourth velocity v4;

[0072] Step 310: When the deformation of the first target position 401 is greater than the deformation of the second target position 402, adjust the first external force and the second external force to stretch the electrode 400 towards the first target position 401.

[0073] It should be noted that if the electrode 400 is found to be deviated significantly on one side during the deviation measurement, the elastic part 120 applies a greater external force to the corresponding other side, resulting in greater local deformation of the elastic part 120 and a greater corresponding lateral tensile force, thereby ensuring that the electrode 400 runs in the center.

[0074] In this step 310, by adjusting the first external force and the second external force, the bending deformation of the roller 100 is increased, so that the tensile force of the roller 100 on the electrode 400 in the direction perpendicular to the first direction D1 is increased.

[0075] When the deformation at the first target position 401 is greater than the deformation at the second target position 402, the component velocity v 31 Greater than the component velocity v 41 .

[0076] Specifically, such as Figure 4 As shown, when the deformation of the first target position 401 is greater than that of the second target position 402, the frictional force of the electrode 400 running on the outer peripheral surface of the first ring 210 remains unchanged, which is equivalent to the force acting on the first ring 210 remaining unchanged. Since the deformation of the first target position 401 is greater, the second included angle θ2 is greater than the third included angle θ3, and furthermore, the component velocity v 31 =v3*sinθ2 is greater than the component velocity v 41 The value of v4*sinθ3 can correct and center the electrode 400 towards the first target position 401.

[0077] Compared with the prior art, the present invention provides another method for adjusting the pressure roller device. When the deformation of the first target position 401 of the electrode 400 is greater than the deformation of the second target position 402 of the electrode 400, the roller shaft 100 is asymmetrically bent and deformed by adjusting the first external force and the second external force, thereby stretching the electrode 400 towards the first target position 401. It can be understood that this method for adjusting the pressure roller device corrects the positional offset of the electrode 400 on the outer periphery of the first ring 210, and can solve the problem of electrode misalignment during the coating roller pressing process in existing technologies.

[0078] Regarding the issue of blanking and wrinkling of the electrode tabs during coating and rolling of the electrode sheet 400, the existing improvement methods, which involve adjusting the levelness of both ends of the roller shaft 100 and optimizing the position of the traction tension electrode correction sensor, have limited improvement effects and are relatively complex to debug. Especially for solving the problem of blanking and wrinkling in the middle, the pressure roller device of this application is superior. The pressure roller device of this application includes a roller shaft 100 and an anti-wrinkle part 200. The anti-wrinkle part 200 is sleeved on the elastic part 120 of the roller shaft 100. The anti-wrinkle part 200 includes a first collar 210, the outer periphery of which contacts the electrode sheet 400, and the direction of movement of the electrode sheet 400 does not coincide with the direction of the frictional force generated by the first collar 210. By using the adjustment method of this roller pressing device, by applying external force to both ends of the roller shaft 100, and by directly adjusting the external force at both ends of the roller shaft 100, symmetrical bending deformation or asymmetrical bending deformation of the roller shaft 100 can be achieved, so as to keep the electrode 400 on the outer periphery of the first ring 210 under lateral tension and improve the wrinkling phenomenon of the electrode 400.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] The pressure roller device and its adjustment method provided in the embodiments of the present invention have been described in detail above, and specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of the present invention. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure roller device, characterized in that, include: A roller (100) includes a first end (110), a second end (130), and an elastic part (120), the elastic part (120) being connected between the first end (110) and the second end (130); The anti-wrinkle part (200) is sleeved on the elastic part (120). The anti-wrinkle part (200) includes a first collar (210) and a second collar (220). The second collar (220) is disposed between the elastic part (120) and the first collar (210). The second collar (220) is connected to the elastic part (120). The second collar (220) is connected to the first collar (210). The outer periphery of the first collar (210) is in contact with the electrode (400), and the direction of movement of the electrode (400) does not coincide with the direction of friction generated by the first collar (210). The first end (110) is used to receive a first external force, and the second end (130) is used to receive a second external force. By adjusting the first external force and the second external force, the elastic part (120) is bent and deformed, thereby adjusting the lateral tensile force of the roller (100) on the electrode (400).

2. The pressure roller device according to claim 1, characterized in that, The first ring (210) includes an inner layer and a wrapping layer, the wrapping layer covering the inner layer.

3. The pressure roller device according to claim 2, characterized in that, The encapsulation layer includes a polytetrafluoroethylene coating; the inner layer includes an adhesive layer.

4. The pressure roller device according to claim 1, characterized in that, The roller (100) further includes a central shaft (140), which includes a first end (110) and a second end (130); the elastic part (120) includes an elastic sleeve (121), which is disposed on the outer periphery of the central shaft (140) and is located between the first end (110) and the second end (130).

5. The pressure roller device according to claim 4, characterized in that, The outer periphery of the elastic sleeve (121) is connected to the second collar (220); the first collar (210) is coaxially engaged with the elastic sleeve (121).

6. The pressure roller device according to claim 1, characterized in that, It also includes a ball bearing (300) disposed between the first collar (210) and the second collar (220).

7. A method for adjusting a pressure roller device, characterized in that, The method for adjusting the pressure roller device as described in any one of claims 1-6 includes the following steps: A first external force is applied to the first end (110) of the roller shaft (100), and a second external force is applied to the second end (130) of the roller shaft (100), causing the roller shaft (100) to bend and deform. The electrode (400) moves along the first direction D1 on the outer periphery of the first ring (210); By adjusting the first external force and the second external force, the roller (100) is bent and deformed, and the roller (100) is further stretched to stretch the electrode (400).

8. The adjustment method according to claim 7, characterized in that, The first ring (210) moves along the second direction D2 at the second velocity. The motion, the second direction D2 and the first direction D1 form a first angle. ; When the first included angle and the second speed As the tension increases, the tensile force exerted by the roller (100) on the electrode (400) in the direction perpendicular to the first direction D1 increases.

9. The adjustment method according to claim 8, characterized in that, The second speed Decomposed into the first decomposition rate Second decomposition speed The first decomposition speed The second speed The component of velocity along the first direction D1, the second velocity The component of velocity perpendicular to the first direction D1 is the second decomposed velocity. , , .

10. A method for adjusting a pressure roller device, characterized in that, The method for adjusting the pressure roller device as described in any one of claims 1-6 includes the following steps: A first external force is applied to the first end (110) of the roller shaft (100), and a second external force is applied to the second end (130) of the roller shaft (100), causing the roller shaft (100) to bend and deform. The electrode (400) moves along the outer periphery of the first ring (210) in the first direction D1; the electrode (400) includes a first target position (401) and a second target position (402); When the deformation of the first target position (401) is greater than the deformation of the second target position (402), the first external force and the second external force are adjusted so that the roller (100) stretches the electrode (400) toward the first target position (401).

11. The adjustment method according to claim 10, characterized in that, At the first target position (401), the first collar (210) travels along the third direction D3 at a third velocity. The motion, wherein the third direction D3 and the first direction D1 form a second included angle. ; At the second target position (402), the first ring (210) travels along the fourth direction D4 at a fourth velocity. The motion, wherein the fourth direction D4 and the first direction D1 form a third included angle. ; When the deformation of the first target position (401) is greater than the deformation of the second target position (402), the second included angle Greater than the third included angle .

12. The adjustment method according to claim 11, characterized in that, The third speed The component of velocity in the direction perpendicular to the first direction D1 ; The fourth speed The component of velocity in the direction perpendicular to the first direction D1 ; When the deformation at the first target position (401) is greater than the deformation at the second target position (402), the component velocity... Greater than the component velocity .

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