Roller device and pole piece production equipment

Abstract

The invention relates to the field of pole piece production, and discloses a roller device and pole piece production equipment.The roller device comprises a rack, two film forming assemblies, two composite rollers, at least one thinning roller and a second linear driving part, the rack comprises two fixing frames arranged at intervals, the two fixing frames define an installation space, each fixing frame is provided with a first installation groove, and the first installation groove is provided with a second installation groove; the film forming assembly is arranged at the corresponding end of the first mounting groove and comprises a driven frame, a first film forming roller and a second film forming roller are mounted on the driven frame, a first linear driving part is further mounted on the driven frame, the composite roller is movably arranged in the first mounting groove, and the thinning roller is located between the driven frame and the composite roller. And the second linear driving piece is fixedly mounted on the side wall of the end part of the first mounting groove. According to the film forming assembly, the first film forming roller and the second film forming roller are integrated through the independently-arranged driven frame, accurate pressure control is conducted on the second film forming roller through the first linear driving piece, and independent pressure adjustment of the film forming procedure is achieved.

Description

Technical Field

[0001] This application relates to the field of pole piece production, and particularly to a roll device and a pole piece production equipment. Background Art

[0002] Traditional lithium battery pole piece rolling equipment generally adopts a unified roll gap pressure control system, and the roll gap pressures of each process cannot be adjusted independently in zones. Specifically, existing equipment uses rolls with the same roll diameter in the film forming, thinning, and lamination processes, and the roll gap pressure parameters are uniformly set. As a result, it is impossible to use a lower pressure in the film forming stage to ensure the uniformity of the film layer, and it is difficult to apply sufficient pressure in the thinning and lamination processes to improve the material density and peel strength. More seriously, due to the lack of physical separation between the rolls of each process, the mechanical vibrations generated during the thinning and lamination processes will be directly transmitted to the film forming area, causing fluctuations in the film layer thickness. Such non-uniform thickness pole pieces will cause abnormal fluctuations in the roll gap pressure in subsequent processes, forming a vicious cycle. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a roll device and a pole piece production equipment.

[0004] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0005] This application provides:

[0006] A roll device, comprising:

[0007] A frame, the frame includes two spaced fixed frames, the two fixed frames define an installation space, and the fixed frame has a first installation groove;

[0008] Two film forming components, the film forming components are arranged at the corresponding ends of the first installation groove, the film forming component includes a driven frame, a first film forming roll and a second film forming roll are installed on the driven frame, and a first linear driving member is further installed on the driven frame, and the first linear driving member is used to drive the second film forming roll to move towards the first film forming roll;

[0009] Two composite rolls, the composite rolls are movably arranged in the first installation groove, and the composite rolls are located between the two film forming components;

[0010] At least one thinning roll, the thinning roll is movably arranged in the first installation groove, and the thinning roll is located between the driven frame and the composite roll;

[0011] A second linear driving member, the second linear driving member is fixedly installed on the side wall of the end of the first installation groove, and the driving end of the second linear driving member is in transmission connection with the driven frame.

[0012] Further, the first film forming roller is rotatably mounted on the driven frame. The driven frame has a second mounting groove, and a mounting seat is movably arranged in the second mounting groove. The second film forming roller is rotatably mounted on the mounting seat. The first linear driving member is fixedly mounted on the side wall of the mounting seat, and the first linear driving member is used to drive the mounting seat to move towards the first film forming roller.

[0013] Further, a third linear driving member is arranged between the two composite rollers.

[0014] Further, gap adjusting assemblies are arranged between the thinning roller and the driven frame, between the thinning roller and the composite roller, and between adjacent thinning rollers. The gap adjusting assembly includes a first inclined block and a second inclined block. The inclined surfaces of the first inclined block and the second inclined block facing each other are in sliding contact. The gap adjusting assembly further includes a fourth linear driving member, and the fourth linear driving member is used to drive the second inclined block to move.

[0015] Further, a second accommodation groove is formed on the inclined surface of the first inclined block facing the second inclined block, and a first needle roller is arranged in the second accommodation groove.

[0016] Further, a width limiting assembly is fixedly mounted on the side surface of the driven frame. The width limiting assembly is located in the installation space. The width limiting assembly includes a sliding shaft, and two limiting plates are slidably mounted on the sliding shaft. The limiting plates are provided with a first arc groove adapted to the surface of the first film forming roller and a second arc groove adapted to the surface of the second film forming roller.

[0017] Further, roller assemblies are further arranged at the bottom corners of the driven frame. The roller assembly includes a fixed block. The fixed block has a first accommodation groove. A rotating member is rotatably mounted at the end of the fixed block. At least one roller body is rotatably mounted on the rotating member. The roller body rotates to the first accommodation groove through the rotating member. A contact plate is fixedly mounted on the fixed block, and the contact plate abuts against the rotating member.

[0018] Further, the rolling mill device includes a plurality of mounting components. The mounting component includes a mounting plate arranged on the side surface of the fixed frame. A slider is fixedly mounted on the side surface of the fixed frame. The mounting plate is slidably connected with the slider. A pre-tightening block is fixedly mounted on the top and / or bottom of the mounting plate, and the pre-tightening block abuts against the slider. A rotation driving member is fixedly mounted on the mounting plate.

[0019] Further, the diameter of the composite roller is D1, and the diameter of the thinning roller is D2; it satisfies: D1 > D2.

[0020] The present application also provides a pole piece production device, and the pole piece production device includes the roll device described in any one of the above.

[0021] The film forming assembly of the present application integrates the first film forming roll and the second film forming roll through an independently arranged driven frame, and uses the first linear driving member to implement precise pressure control on the second film forming roll, so as to realize independent pressure adjustment of the film forming process; the second linear driving member drives the driven frame to displace integrally in the first installation groove of the fixed frame, so as to form an independent adjustment area with physical isolation between the thinning roll and the composite roll. Through the independent pressure control of the first film forming roll and the second film forming roll, and the zoning adjustment of the thinning roll and the composite roll, the independent control of the roll gap pressure in the film forming, thinning, and composite processes is realized, significantly improving the film layer uniformity and material density.

[0022] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 Shows a three-dimensional schematic diagram of the roll device of the present application;

[0025] Figure 2 Shows a side view schematic diagram of the roll device of the present application;

[0026] Figure 3 Shows a three-dimensional structure schematic diagram of the film forming assembly of the present application;

[0027] Figure 4 Shows a side view schematic diagram of the film forming assembly of the present application;

[0028] Figure 5 Shows an exploded state schematic diagram of the gap adjustment assembly of the present application;

[0029] Figure 6 Shows a structure schematic diagram of the width limiting assembly of the present application;

[0030] Figure 7 Shows a structure schematic diagram of the driven frame of the present application;

[0031] Figure 8 Shows a structure schematic diagram of the roller assembly of the present application;

[0032] Figure 9Shows the schematic structural diagram of the installation component of the present application;

[0033] Figure 10 Shows the schematic structural diagram of the rolling component of the present application;

[0034] Figure 11 Shows the schematic layout diagram of the existing roll device;

[0035] Figure 12 Shows the schematic diagram of the forces on each roll of the roll device.

[0036] Description of main component symbols:

[0037] 100 - Fixed frame; 101 - First installation groove; 200 - Film forming component; 210 - Driven frame; 201 - Second installation groove; 202 - Mounting seat; 220 - First film forming roll; 230 - Second film forming roll; 240 - First linear drive; 250 - Roller assembly; 2501 - First accommodating groove; 251 - Fixed block; 252 - Rotating part; 253 - Roller body; 254 - Abutting plate; 300 - Composite roll; 310 - Third linear drive; 400 - Thinning roll; 500 - Second linear drive; 600 - Gap adjusting component; 610 - First inclined block; 611 - Second accommodating groove; 620 - Second inclined block; 630 - Fourth linear drive; 640 - First needle roller; 700 - Width limiting component; 710 - Sliding shaft; 720 - Limiting plate; 721 - First arc groove; 722 - Second arc groove; 800 - Installation component; 810 - Installation plate; 820 - Slide block; 830 - Preloading block; 840 - Rotating drive; 900 - Rolling component; 910 - Fixed plate; 901 - Third installation groove; 920 - Accommodating plate; 921 - Fourth installation groove; 930 - Second needle roller. Detailed implementation manners

[0038] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0039] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application 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 thus should not be construed as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0041] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] Refer to Figure 11 and Figure 12As shown in the figure, in the existing roll device, the first film-forming roll 220, the second film-forming roll 230, which are usually used for the formation of the electrode sheet, the thinning roll 400 for thinning, and the composite roll 300 for lamination are arranged side by side in the first installation groove 101 of the fixed frame 100. Second linear driving members 500 are arranged at both ends of the first installation groove 101. By driving the respective rolls to move closer to each other through the second linear driving members 500, the pressure for forming, thinning, and lamination is applied. The diameters of the respective rolls are the same, and the distance between the rolls is adjusted by a gap adjustment assembly 600. However, in this method, only the second linear driving members 500 can control the pressure. Since the pressures used for forming, thinning, and lamination are different, the thickness of the formed electrode sheet film will be uneven, the stability will be poor, and the forming pressures of the first film-forming roll 220 and the second film-forming roll 230, the thinning pressure of the thinning roll 400, and the lamination pressure of the composite roll 300 cannot be controlled individually.

[0044] An embodiment of the present application provides a roll device, which includes a frame, two film-forming assemblies 200, two composite rolls 300, at least one thinning roll 400, and a second linear driving member 500.

[0045] In one embodiment, the frame includes two spaced-apart fixed frames 100. The two fixed frames 100 define an installation space. The fixed frame 100 has a first installation groove 101. The film-forming assembly 200 is arranged at the corresponding end of the first installation groove 101. The film-forming assembly 200 includes a driven frame 210. A first film-forming roll 220 and a second film-forming roll 230 are installed on the driven frame 210. A first linear driving member 240 is also installed on the driven frame 210. The first linear driving member 240 is used to drive the second film-forming roll 230 to move towards the first film-forming roll 220. The composite roll 300 is movably arranged in the first installation groove 101, and the composite roll 300 is located between the two film-forming assemblies 200. The thinning roll 400 is movably arranged in the first installation groove 101, and the thinning roll 400 is located between the driven frame 210 and the composite roll 300. The second linear driving member 500 is fixedly installed on the side wall at the end of the first installation groove 101, and the driving end of the second linear driving member 500 is in transmission connection with the driven frame 210.

[0046] The first film-forming roll 220 is rotatably installed on the driven frame 210. The driven frame 210 has a second installation groove 201. A mounting seat 202 is movably arranged in the second installation groove 201. The second film-forming roll 230 is rotatably installed on the mounting seat 202. The first linear driving member 240 is fixedly installed on the side wall of the mounting seat 202. The first linear driving member 240 is used to drive the mounting seat 202 to move towards the first film-forming roll 220.

[0047] Refer to Figure 1 and Figure 2 As shown, the first film forming roller 220 and the second film forming roller 230 are arranged on the driven frame 210. Specifically, the first film forming roller 220 is rotatably installed on the driven frame 210, and the second film forming roller 230 is rotatably installed on the mounting seat 202 that can move in the second installation groove 201. And a first linear drive member 240 for driving the mounting seat 202 to move towards the first film forming roller 220 is installed in the second installation groove 201. The first linear drive member 240 is fixedly installed on the side wall of the second installation groove 201. By driving the second film forming roller 230 to move through the first linear drive member 240, the second film forming roller 230 also moves towards the first film forming roller 220, so as to change the gap and pressure between the first film forming roller 220 and the second film forming roller 230, and further control the gap and pressure of the pole piece forming.

[0048] Please continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, further, the second linear drive member 500 is fixedly installed on the side wall of the end of the first installation groove 101. There are two second linear drive members 500 in total. The second linear drive members 500 are located on the side walls at both ends of the first installation groove 101. The power output end of the second linear drive member 500 is fixedly connected to the side wall of the driven frame 210, so as to be able to drive the driven frame 210 to move towards the thinning roller 400, so as to change the pressure between the first film forming roller 220 and the thinning roller 400, the pressure between the thinning rollers 400, and the pressure between the thinning roller 400 and the composite roller 300. Since the first film forming roller 220 and the second film forming roller 230 are separately located on the driven frame 210, the pressure between the first film forming roller 220 and the second film forming roller 230 is controlled by the first linear drive member 240, and the pressure between adjacent thinning rollers 400, the pressure between the first film forming roller 220 and the thinning roller 400, and the pressure between the thinning roller 400 and the composite roller 300 are controlled by the second linear drive member 500.

[0049] In one embodiment, the mounting seat 202 is a bearing seat, so that it can move in the second installation groove 201 and make the second film forming roller 230 rotate. Further, bearing seats are provided at both ends of the thinning roller 400 and the composite roller 300. The bearing seats can move in the length direction under force in the second installation groove 201, so as to be able to adjust the distance between each roller.

[0050] In this embodiment, since the pressure between the first film-forming roller 220 and the second film-forming roller 230 is independently controlled and adjusted by the first linear driving member 240, the interference generated by the thinning roller 400 and the composite roller 300 is separated. The pressures between the thinning roller 400 and the first film-forming roller 220, between the thinning roller 400 and the thinning roller 400, and between the thinning roller 400 and the composite roller 300 are adjusted by the second linear driving member 500. Therefore, the pressure between each roller can be adjusted in zones to make the forming and thinning reach the required pressure, and then the thickness of the produced electrode sheet film meets the requirements.

[0051] A third linear driving member 310 is arranged between the two composite rollers 300.

[0052] Please continue to refer to Figure 1 and Figure 2 In order to set the formed electrode sheet film on the current collector, two composite rollers 300 are required to apply pressure to the current collector and two electrode sheet films so that the electrode sheet film is pressed and combined on the current collector to complete the lamination. In order to meet the lamination pressure, a third linear driving member 310 is arranged between the two composite rollers 300, and the pressure between the two composite rollers 300 is controlled by the third linear driving member 310. If the pressure from the second linear driving member 500 is greater than the required pressure for lamination, the third linear driving member 310 can be activated to offset the excess pressure from the second linear driving member 500, so that the pressure between the two composite rollers 300 meets the lamination pressure requirement.

[0053] In this embodiment, the first linear driving member 240, the third linear driving member 310, and the second linear driving member 500 are all oil cylinders, and specifically, a servo oil cylinder or a hydraulic automatic gauge control servo hydraulic cylinder AGC oil cylinder can be selected, which can accurately control the output pressure.

[0054] Gap adjusting assemblies 600 are arranged between the thinning roller 400 and the driven frame 210, between the thinning roller 400 and the composite roller 300, and between adjacent thinning rollers 400. The gap adjusting assembly 600 includes a first inclined block 610 and a second inclined block 620. The inclined surfaces of the first inclined block 610 and the second inclined block 620 that face each other are in sliding contact. The gap adjusting assembly 600 further includes a fourth linear driving member 630, and the fourth linear driving member 630 is used to drive the second inclined block 620 to move.

[0055] Refer to Figure 1 、 Figure 2 and Figure 5As shown, in order to adjust the spacing between the thinning roller 400 and the driven frame 210, the spacing between adjacent thinning rollers 400, and the spacing between the thinning roller 400 and the composite roller 300, a gap adjustment assembly 600 is provided therebetween for spacing adjustment. Specifically, the mutually approaching surfaces of the second inclined block 620 and the first inclined block 610 have cooperating inclined surfaces. By driving the second inclined block 620 to move so that it slidably abuts against the first inclined block 610, the width increases in the width direction, and the spacing between the components increases, thereby achieving gap adjustment.

[0056] Exemplarily, the fourth linear drive member 630 can be a motor screw assembly. The screw is connected to the second inclined block 620, and the second inclined block 620 is driven to move by driving the screw to rotate through the motor. Further, in order to be able to meet the driving force of the second inclined block 620, a speed reducer can be installed on the output shaft of the motor, and the output end of the speed reducer is connected to the screw. The speed reducer can convert the high speed and low torque from the motor into a state of high torque and low speed. Exemplarily, the speed reducer can be of types such as a planetary speed reducer, a worm and worm gear speed reducer, etc., and specific details are not limited here.

[0057] The inclined surface of the first inclined block 610 facing the second inclined block 620 has a second accommodation groove 611, and a first needle roller 640 is arranged in the second accommodation groove 611.

[0058] Please continue to refer to Figure 6 As shown, in order to reduce the friction between the first inclined block 610 and the second inclined block 620, a row of first needle rollers 640 can be arranged between the first inclined block 610 and the second inclined block 620, so as to be able to convert sliding friction into rolling friction, reduce the friction, and improve the service life. Further, in order to prevent the first needle roller 640 from separating from the first inclined block 610, a second accommodation groove 611 can be provided on the inclined surface of the first inclined block 610 facing the second inclined block 620, and the first needle roller 640 is arranged in the second accommodation groove 611. In other embodiments, the second accommodation groove 611 can also be provided on the inclined surface of the second inclined block 620 facing the first inclined block 610. In practice, it can be set according to actual needs, and specific details are not limited here.

[0059] A width limiting assembly 700 is fixedly installed on the side surface of the driven frame 210. The width limiting assembly 700 is located in the installation space. The width limiting assembly 700 includes a sliding shaft 710, and two limiting plates 720 are slidably installed on the sliding shaft 710. The limiting plates 720 are provided with a first arc groove 721 adapted to the surface of the first film forming roller 220 and a second arc groove 722 adapted to the surface of the second film forming roller 230.

[0060] Please refer to Figure 1 、 Figure 3 and Figure 6As shown, in order to be able to manufacture electrode films of different widths, the distance between the two limit plates 720 can be controlled, thereby controlling the width of the electrode film. Specifically, in order to enable the limit plate 720 to adapt to the shapes of the first film-forming roller 220 and the second film-forming roller 230, a first arc groove 721 and a second arc groove 722 are opened on the limit plate 720, so as to adapt to the shapes of the outer surfaces of the first film-forming roller 220 and the second film-forming roller 230. It should be noted that the shapes of the first arc groove 721 and the second arc groove 722 are adapted to the shapes of the first film-forming roller 220 and the second film-forming roller 230, so as to prevent the electrode film from overflowing through the gap between the first arc groove 721 and the first film-forming roller 220 and the gap between the second arc groove 722 and the second film-forming roller 230.

[0061] A roller assembly 250 is also provided at the bottom corner of the driven frame 210, and the roller assembly 250 includes a fixed block 251, and the fixed block 251 has a first receiving groove 2501. A rotating member 252 is rotatably mounted on the end of the fixed block 251, and at least one roller body 253 is rotatably mounted on the rotating member 252. The roller body 253 is rotated to the first receiving groove 2501 through the rotating member 252, and an abutment plate 254 is fixedly mounted on the fixed block 251, and the abutment plate 254 abuts against the rotating member 252.

[0062] See also Figure 7 and Figure 8 As shown, in order to facilitate the movement of the driven frame 210 during transportation or installation, the roller assembly 250 is installed at the bottom corner of the driven frame 210, and the roller body 253 of the roller assembly 250 rolls to realize the movement of the driven frame 210. Specifically, the fixed block 251 is fixedly installed on the driven frame 210, and then the rotating member 252 used for installing the roller body 253 is rotatably installed on the fixed block 251 through a pin shaft, and as the rotating member 252 rotates, the roller body 253 enters the first accommodating groove 2501. In order to prevent the roller body 253 from escaping from the first accommodating groove 2501, the abutment plate 254 fixedly connected to the fixed block 251 abuts against the rotating member 252, thereby providing support for the rotating member 252 to prevent the rotating member 252 from rotating in the opposite direction so that the roller body 253 is escaping from the first accommodating groove 2501.

[0063] The rolling roller device includes a plurality of mounting components 800, and the mounting components 800 include a mounting plate 810 arranged on the side of the fixed frame 100, a slider 820 is fixedly mounted on the side of the fixed frame 100, the mounting plate 810 is slidably connected to the slider 820, a pre-tightening block 830 is fixedly mounted on the top and / or bottom of the mounting plate 810, the pre-tightening block 830 abuts against the slider 820, and a rotating driving member 840 is fixedly mounted on the mounting plate 810.

[0064] Please refer to Figure 9 As shown, in order to facilitate the adaptation of each roller to the distance of left - right movement and for the driving member to drive it to move together, in this embodiment, a slider 820 is installed at the position of each roller, and a mounting plate 810 is slidably arranged on the slider 820. To ensure the stability of the mounting plate 810 following the movement of the roller, pre - tightening blocks 830 are installed on both the bottom surface and / or the top surface of the mounting plate 810, so that the pre - tightening blocks 830 abut against the slider 820, thereby making the mounting plate 810 closely attached to the slider 820. Further, a rotary driving member 840 is fixedly installed on the mounting plate 810, and the rotating shaft of the rotary driving member 840 is connected to the end of the roller by a coupling, so that the roller can be driven to rotate by the rotary driving member 840. The rollers mentioned here include the first film - forming roller 220, the second film - forming roller 230, the composite roller 300, and the thinning roller 400.

[0065] Exemplarily, the rotary driving member 840 is a motor, specifically a servo motor. And to ensure having enough torque to drive the roller to rotate, a speed reducer can be connected to the motor at its rotating shaft. The speed reducer can be a planetary speed reducer, a worm - gear speed reducer, etc., and can be specifically selected according to actual needs, which is not limited here.

[0066] In this embodiment, the diameter of the composite roller 300 is D1, and the diameter of the thinning roller 400 is D2; satisfying: D1 > D2. By increasing the diameter of the composite roller 300, it can bear greater pressure, reduce its deformation amount, and the larger diameter can also improve the compaction density of the pole piece.

[0067] In this embodiment, in order to prevent the bearing seats of each roller from sliding on the upper and lower surfaces of the first installation groove 101 and causing damage to the side walls, rolling components 900 are arranged on both the inner top wall and the inner bottom wall of the first installation groove 101, thereby converting sliding friction into rolling friction. Further, in order to prevent the second inclined block 620 from directly sliding on the side wall of the bearing seat during the movement process, a rolling component 900 can be installed on the side surface of the second inclined block 620 away from the first inclined block 610, or a rolling component 900 can be installed on the side surface of the bearing seat close to the second inclined block 620, converting the sliding friction between the second inclined block 620 and the bearing seat into rolling friction.

[0068] Please refer to Figure 10 As shown, the rolling component 900 includes a fixing plate 910. The upper surface of the fixing plate 910 has a third installation groove 901. A receiving plate 920 is arranged in the third installation groove 901. The receiving plate 920 is provided with fourth installation grooves 921 arranged linearly and equidistantly. Each of the fourth installation grooves 921 is provided with a second needle roller 930. By the second needle roller 930 rolling in the fourth installation groove 921, the sliding friction is converted into rolling friction, reducing the friction between components.

[0069] An embodiment of the present application further provides a pole piece production device, and the pole piece production device includes the roll device described in any one of the above.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0071] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A roller device, characterized in that: include: A frame, the frame comprising two fixed frames (100) arranged at an interval, the two fixed frames (100) defining an installation space, the fixed frames (100) having a first installation slot (101); Two film forming assemblies (200), wherein the film forming assemblies (200) are arranged at the ends corresponding to the first mounting groove (101), and the film forming assemblies (200) include a driven frame (210), on which a first film forming roller (220) and a second film forming roller (230) are mounted, and a first linear driving member (240) is also mounted on the driven frame (210), and the first linear driving member (240) is used to drive the second film forming roller (230) to move in the direction of the first film forming roller (220); two composite rollers (300), the composite rollers (300) being movably arranged in the first mounting groove (101), and the composite rollers (300) being located between the two film forming assemblies (200); at least one thinning roller (400), the thinning roller (400) being movably disposed in the first mounting groove (101), the thinning roller (400) being located between the driven frame (210) and the composite roller (300); A second linear driving member (500), wherein the second linear driving member (500) is fixedly mounted on a side wall at the end of the first mounting groove (101), and a driving end of the second linear driving member (500) is drivingly connected to the driven frame (210).

2. The roller device according to claim 1, characterized in that: The first film-forming roller (220) is rotatably mounted on the driven frame (210), and the driven frame (210) has a second mounting groove (201), and a mounting seat (202) is movably arranged in the second mounting groove (201), and the second film-forming roller (230) is rotatably mounted on the mounting seat (202), and the first linear driving member (240) is fixedly mounted on the side wall of the mounting seat (202), and the first linear driving member (240) is used to drive the mounting seat (202) to move toward the first film-forming roller (220).

3. The roller device according to claim 1, characterized in that: A third linear driving member (310) is arranged between the two composite rollers (300).

4. The roller device according to claim 1, characterized in that: A gap adjustment assembly (600) is provided between the thinning roller (400) and the driven frame (210), between the thinning roller (400) and the composite roller (300), and between adjacent thinning rollers (400). The gap adjustment assembly (600) comprises a first inclined block (610) and a second inclined block (620). The first inclined block (610) and the second inclined block (620) are in sliding contact with each other with inclined surfaces facing each other. The gap adjustment assembly (600) further comprises a fourth linear drive member (630). The fourth linear drive member (630) is used to drive the second inclined block (620) to move.

5. The roller device according to claim 4, characterized in that: A second accommodating groove (611) is provided on the inclined surface of the first inclined block (610) in the direction toward the second inclined block (620), and a first rolling needle (640) is arranged in the second accommodating groove (611).

6. The roller device according to claim 1, characterized in that: A limited width component (700) is fixedly installed on the side of the driven frame (210), and the limited width component (700) is located in the installation space. The limited width component (700) includes a sliding shaft (710), and two limiting plates (720) are slidably installed on the sliding shaft (710). The limiting plates (720) are provided with a first arc groove (721) adapted to the surface of the first film-forming roller (220) and a second arc groove (722) adapted to the surface of the second film-forming roller (230).

7. The roller device according to claim 1, characterized in that: A roller assembly (250) is also provided at the bottom corner of the driven frame (210), and the roller assembly (250) comprises a fixed block (251), the fixed block (251) has a first receiving groove (2501), a rotating member (252) is rotatably mounted on the end of the fixed block (251), at least one roller body (253) is rotatably mounted on the rotating member (252), the roller body (253) is rotated to the first receiving groove (2501) through the rotating member (252), and an abutment plate (254) is fixedly mounted on the fixed block (251), and the abutment plate (254) abuts against the rotating member (252).

8. The roller device according to claim 1, characterized in that: The rolling device comprises a plurality of mounting components (800), wherein the mounting components (800) comprise a mounting plate (810) arranged on a side of the fixing frame (100), a slider (820) being fixedly mounted on the side of the fixing frame (100), the mounting plate (810) being slidably connected to the slider (820), a pre-tightening block (830) being fixedly mounted on the top and / or bottom of the mounting plate (810), the pre-tightening block (830) being in contact with the slider (820), and a rotating driving member (840) being fixedly mounted on the mounting plate (810).

9. The roller device according to claim 1, characterized in that: The diameter of the composite roller (300) is D1, and the diameter of the thinning roller (400) is D2; Satisfies: D1>D2.

10. A pole piece production device, characterized in that: A rolling mill device comprising any one of claims 1 to 9.

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