Lithium electrode plate rolling equipment with rollers capable of being adjusted in partition mode

Abstract

Lithium electrode plate rolling equipment capable of adjusting rollers in a partitioned manner comprises an upper roller assembly, a lower roller assembly and a partitioned shape adjusting assembly, the upper roller assembly and the lower roller assembly are spaced up and down and are arranged in the same direction, and a lithium electrode plate to be rolled is conveyed between the upper roller assembly and the lower roller assembly and is rolled by the rolling upper roller assembly and the rolling lower roller assembly. The partition shape adjusting assembly is arranged below the lower roller assembly and comprises three servo hydraulic cylinders. The lower roller assembly comprises three small rollers corresponding to the three servo hydraulic cylinders and provides shape adjusting driving force. According to the subarea rolling equipment, the three subarea supporting seats are pressurized through the three servo hydraulic cylinders respectively, and the three small rollers are adjusted to ascend or descend through deformation of the subarea supporting seats respectively, so that the two ends or the middle sections of the rollers can be adjusted in a subarea mode to meet the production requirement for thickness consistency of pole pieces; and meanwhile, the remodeling guide rails are arranged below the rollers, remodeling dismounting and mounting work can be conveniently carried out after the roller assemblies are abraded, and the remodeling efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery pole piece roll press technical field especially relates to a lithium electrode piece roll press equipment of zonal regulation roll. BACKGROUND

[0002] The pole piece is rolled and is a process in the lithium battery production, and the purpose is to compact the pole piece through rolling to enhance the adhesion strength of active material and foil and prevent the pole piece from peeling in the electrolyte immersion or long-time battery use.

[0003] The conventional roll press equipment currently comprises a pair of large rolls arranged in a portal frame in an upper and lower interval and auxiliary oil pressure bending cylinders arranged at the two ends of the large rolls, the lithium electrode pieces to be rolled are between the large rolls, and the auxiliary oil pressure bending cylinders are used to pressurize the two ends of the large rolls to correct the deflection deformation of the rolls. Since the large roll is heavy (about 20 tons), the large roll with large tonnage is supported on the portal frame with a width of about two meters, and the middle section is bent, thereby affecting the thickness consistency of the pole piece and causing defective products.

[0004] The existing roll press equipment has the following defects in actual production:

[0005] 1. Since the auxiliary oil pressure bending cylinders are arranged at the two ends of the large roll, although the problem of deformation of the large roll can be alleviated to a certain extent by pressurization, the effect is not obvious, and the problem of deformation of the middle section of the large roll cannot be completely solved;

[0006] 2. It is difficult to balance and pressurize the two ends of the large roll through the auxiliary oil pressure bending cylinders, which is time-consuming and laborious, low in efficiency, and difficult to ensure the thickness consistency of the pole piece;

[0007] 3. The large roll is large in size, heavy in tonnage, complex in structure, and difficult to disassemble and assemble, and needs to be disassembled and replaced after wear, which takes a long time (usually four people need to cooperate for two days to complete the replacement), the equipment utilization rate is low, and the production efficiency is seriously affected. INVENTION CONTENTS

[0008] In view of the defects of the prior art, the utility model provides a lithium electrode piece roll press equipment capable of adjusting the roll in a partitioned manner to overcome the defects in the prior art.

[0009] To achieve the above purpose, the utility model realizes the following technical scheme:

[0010] The application discloses a lithium electrode sheet rolling device capable of adjusting rollers in sections, which comprises a portal frame, an upper roller assembly, a lower roller assembly and a section-shaping assembly arranged in the portal frame; the upper roller assembly and the lower roller assembly are arranged in the same direction and are spaced apart from each other; the lithium electrode sheet to be rolled is conveyed to the space between the upper roller assembly and the lower roller assembly by a conveying device and is rolled by the upper roller assembly and the lower roller assembly; the section-shaping assembly is arranged below the lower roller assembly and is connected with the lower roller assembly through a shaping support assembly; the section-shaping assembly shapes the two ends and the middle section of the lower roller assembly respectively, so that the thickness of the lithium electrode sheet after being rolled is uniform.

[0011] The lower roller assembly comprises three small rollers which are coaxially fixedly connected into one body and are arranged at equal intervals.

[0012] The section-shaping assembly comprises three servo hydraulic cylinders which work independently, correspond to the three small rollers respectively and provide shaping driving force.

[0013] Further, the shaping support assembly comprises three section supporting seats which are arranged side by side and have openings facing the lower roller assembly, and the three section supporting seats correspond to the three small rollers and are respectively supported on the central shafts of the three small rollers.

[0014] Further, the upper roller assembly comprises a large roller which is rotatably installed on the portal frame through a bearing seat.

[0015] Preferably, the lower roller assembly is rotatably installed on the portal frame through a bearing seat and is located below the upper roller assembly.

[0016] Preferably, the section-shaping assembly is fixedly arranged in the portal frame and is located below the shaping support assembly, and the three servo hydraulic cylinders of the section-shaping assembly correspond to the three section supporting seats.

[0017] Preferably, the large roller and the lower roller assembly are driven by external driving mechanisms.

[0018] Preferably, the output shafts of the three servo hydraulic cylinders are connected with the three section supporting seats respectively.

[0019] Further, the lithium electrode sheet rolling device capable of adjusting rollers in sections also comprises a profile changing guide rail assembly, the profile changing guide rail assembly comprises a profile changing guide rail which is slidingly arranged in the portal frame, a supporting plate is arranged on the profile changing guide rail and the supporting plate is located at the bottom of the shaping support assembly.

[0020] Compared with the prior art, the lithium electrode sheet rolling device capable of adjusting rollers in sections has the following beneficial effects:

[0021] 1) The lithium electrode sheet rolling device of the present case can adjust the rolling roller by zone, three servo hydraulic cylinders are used to press three zone supporting seats respectively, the deformation of the zone supporting seat is used to adjust the rising or lowering of the three small rollers respectively, so that the posture of the two ends or the middle section of the rolling roller can be independently adjusted by zone, the problem of the deformation of the middle section of the large rolling roller is solved to the maximum, and the production requirement of the consistency of the thickness of the electrode sheet can be met.

[0022] 2) The lithium electrode sheet rolling device of the present case can adjust the rolling roller by zone, a shape changing guide rail is arranged below the rolling roller assembly, so that the shape changing disassembly work can be facilitated after the rolling roller assembly is worn, time and labor are saved, and the shape changing efficiency is effectively improved.

[0023] In order to more clearly understand the present application, the preferred embodiments of the present application will be described below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of the embodiment 1 of the present application.

[0025] Figure 2 It is a front view of the structural schematic diagram of the embodiment 1 of the present application.

[0026] Figure 3 It is a side view of the structural schematic diagram of the embodiment 1 of the present application.

[0027] Figure 4 It is a perspective view of the embodiment 2 of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1-gantry, 2-upper rolling roller assembly, 3-lower rolling roller assembly, 4-zone shape changing assembly, 5-shape changing support assembly; 21-large rolling roller, 31-small rolling roller, 41-servo hydraulic cylinder, 51-zone supporting seat; 8-shape changing guide rail. DETAILED DESCRIPTION

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “transverse”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, the meaning of “a plurality of” is two or more.

[0031] In addition, if there are "first", "second" and other terms are only for descriptive purposes, mainly for distinguishing different devices, elements or components (the specific type and structure may be the same or different), not for indicating or implying the relative importance and quantity of the indicated device, element or component, and cannot be understood as indicating or implying the relative importance.

[0032] In addition, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements; for those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] Embodiment 1

[0034] Please also refer to Figures 1-3 The utility model provides a kind of lithium electrode sheet rolling equipment of zoning adjustment roller, including portal frame 1, and the upper roller assembly 2, lower roller assembly 3 and zoning profile adjusting assembly 4 being set in portal frame 1;Upper roller assembly 2 and lower roller assembly 3 are arranged in the same direction with interval, and lithium electrode sheet to be rolled is conveyed to between upper roller assembly 2 and lower roller assembly 3 by conveying device (not shown in drawing) and is rolled by upper roller assembly 2 and lower roller assembly 3 being rolled;Zoning profile adjusting assembly 4 is arranged below lower roller assembly 3, and is connected lower roller assembly 3 by profile adjusting support assembly 5, and zoning profile adjusting assembly 4 is profiled respectively to the two ends and middle section of lower roller assembly 3, to ensure that the thickness of lithium electrode sheet after being rolled is consistent.

[0035] The upper roller assembly 2 includes a large roller 21 rotatably mounted on the portal frame 1 by a bearing seat, and the large roller 21 is driven by an external driving mechanism (not shown in the drawing).

[0036] The lower roller assembly 3 is rotatably mounted on the portal frame 1 by a bearing seat, and the lower roller assembly 3 includes three small rollers 31 coaxially and equally spaced apart, and the three small rollers 31 are fixedly connected coaxially as a whole, and the lower roller assembly 3 is also driven by an external driving mechanism.

[0037] The profile adjusting support assembly 5 includes three partition support seats 51 arranged side by side and having openings facing the lower roller assembly 3, and the three partition support seats 51 correspond to the three small rollers 31 and are respectively supported on the central shafts of the three small rollers 31.

[0038] The partition profile adjusting assembly 4 is fixedly arranged in the portal frame 1 and below the profile adjusting support assembly 5, the partition profile adjusting assembly 4 comprises three servo hydraulic cylinders 41 working independently, the three servo hydraulic cylinders 41 correspond to three partition supporting seats 51, and output shafts of the three servo hydraulic cylinders 41 are connected to the three partition supporting seats 51 respectively.

[0039] Embodiment 2

[0040] Please refer to Figure 4 , embodiment 2 increases a profile changing guide rail assembly on the basis of embodiment 1, the profile changing guide rail assembly comprises a profile changing guide rail 8 arranged in the portal frame 1 in a sliding fit mode, and a supporting plate (not shown in the figure) is arranged on the profile changing guide rail 8, and the supporting plate is located at the bottom of the profile adjusting support assembly 5.

[0041] The lithium electrode sheet rolling device capable of adjusting the roller in a partition mode has the working principle that:

[0042] 1. The lithium electrode sheet is conveyed between the upper roller assembly 2 and the lower roller assembly 3, three servo hydraulic cylinders 41 pressurize three partition supporting seats 51 respectively, the three partition supporting seats 51 support the upward movement or downward adjustment of three small rollers 31 respectively through a certain degree of deformation, so that the two ends or the middle section of the lower roller assembly 3 can be adjusted in a partition mode to meet the production requirement of the consistency of the thickness of the electrode sheet. After the electrode sheet is rolled, the thickness data of each region is fed back after the electrode sheet is detected by a thickness detector (not shown in the figure), the lifting pressure of the servo hydraulic cylinder 41 is further adjusted individually according to the thickness feedback, so that the thickness of the electrode sheet approaches the process thickness required by the customer, and stable production is ensured.

[0043] 2. When the roller needs to be disassembled and changed, the lower roller assembly 3 or the upper roller assembly 2 is lowered to the profile changing guide rail 8 by a crane, and the roller assembly is pulled out for replacement by a roller changing trailer.

[0044] Compared with the prior art, the lithium electrode sheet rolling device capable of adjusting the roller in a partition mode, through the three servo hydraulic cylinders pressurizing the three partition supporting seats respectively, the three partition supporting seats adjust the upward movement or downward adjustment of the three small rollers respectively through the deformation, so that the two ends or the middle section of the roller can be adjusted in a partition mode to meet the production requirement of the consistency of the thickness of the electrode sheet; meanwhile, the profile changing guide rail is arranged below the roller, which facilitates the disassembly and replacement of the roller assembly after the roller is worn, and effectively improves the replacement efficiency.

[0045] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model.

Claims

1. A lithium electrode sheet rolling device with adjustable rollers, characterized by: The invention comprises a gantry (1), an upper roller assembly (2), a lower roller assembly (3) and a partitioned shape adjustment assembly (4) arranged in the gantry (1); the upper roller assembly (2) and the lower roller assembly (3) are spaced apart from each other and arranged in the same direction; the partitioned shape adjustment assembly (4) is arranged below the lower roller assembly (3) and is connected to the lower roller assembly (3) via a shape adjustment bracket assembly (5); The lower roller assembly (3) comprises three small rollers (31) arranged at equal intervals, and the three small rollers (31) are coaxially fixedly connected into one body; The partitioned shape adjustment component (4) comprises three independently working servo hydraulic cylinders (41), the three servo hydraulic cylinders (41) respectively corresponding to the three small rollers (31) and providing shape adjustment driving force.

2. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 1, characterized in that: The shape-adjusting bracket assembly (5) comprises three partition support seats (51) arranged side by side and opening toward the lower roller assembly (3); the three partition support seats (51) correspond to the three small rollers (31) and are respectively supported on the central axes of the three small rollers (31).

3. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 2, characterized in that: The upper roller assembly (2) comprises a large roller (21) rotatably mounted on the gantry (1) via a bearing seat.

4. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 3, characterized in that: The lower roller assembly (3) is rotatably mounted on the gantry (1) via a bearing seat and is located below the upper roller assembly (2).

5. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 3, characterized in that: The partitioned shape adjustment component (4) is fixedly arranged in the gantry (1) and located below the shape adjustment bracket component (5); the three servo hydraulic cylinders (41) of the partitioned shape adjustment component (4) correspond to the three partitioned support seats (51).

6. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 3, characterized in that: The large roller (21) and the lower roller assembly (3) are both driven by an external drive mechanism.

7. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 3, characterized in that: The output shafts of the three servo hydraulic cylinders (41) are respectively connected to three partition support seats (51).

8. The lithium electrode sheet rolling equipment with zone-adjustable rollers according to claim 3, characterized in that: It also includes a profile changing guide rail assembly, which includes a profile changing guide rail (8) slidably arranged in the gantry (1), and a support plate is arranged on the profile changing guide rail (8), and the support plate is located at the bottom of the shape adjustment bracket assembly (5).

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