A lithium battery electrode sheet extrusion forming device

Abstract

The present invention relates to the technical field of lithium battery electrode sheet manufacturing, and specifically to an extrusion forming device for lithium battery electrode sheets, which includes a working platform, a spacing adjustment component, a flatness detection component, a cooling component, an extrusion component, and a quick-release component. A spacing adjustment component for adjusting the distance between two extrusion components is cooperatively installed on the top of the working platform. The spacing adjustment component is cooperatively installed with an extrusion component for extruding and forming battery electrode sheets through a quick-release component. Two groups of cooling components for cooling the extrusion component are cooperatively installed on the spacing adjustment component. Two groups of flatness detection components for detecting the surface flatness of the extrusion component are cooperatively installed on the spacing adjustment component. By setting a cooling component in the extrusion forming device for lithium battery electrode sheets, and through the mutual cooperation of each structure in this component, the benefit of cooling the surface of the extrusion roller in contact with the attachment plate is achieved when the device is in use.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery electrode sheet manufacturing, and specifically to an extrusion forming device for lithium battery electrode sheets. Background Art

[0002] The extrusion forming device for lithium battery electrode sheets is a device specifically used for the production of lithium battery electrode sheets. Its main function is to form electrode materials into electrode sheets with specific thicknesses and shapes through extrusion; during the production process of lithium batteries, the quality of the electrode sheets directly affects the performance and lifespan of the batteries; therefore, the design of the extrusion forming device not only needs to achieve precise control of the thickness and uniformity of the electrode sheets, but also needs to avoid damaging the electrode sheets during operation;

[0003] When the extrusion rollers in the existing extrusion forming devices for lithium battery electrode sheets perform extrusion operations, stress will be generated between them and the electrode sheets, which will further cause the temperature of the extrusion rollers to rise. As the temperature increases, problems will occur where the physical and chemical properties of components such as active substances, binders, and conductive agents in the electrode sheets will change; (for example, the binder may become softer at high temperatures, thus affecting the mechanical stability of the electrode sheets)

[0004] Therefore, an extrusion forming device for lithium battery electrode sheets is needed to improve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an extrusion forming device for lithium battery electrode sheets to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An extrusion forming device for lithium battery electrode sheets includes a working platform, a spacing adjustment component, a flatness detection component, a cooling component, an extrusion component, and a quick-release component. A spacing adjustment component for adjusting the distance between two extrusion components is cooperatively installed on the top of the working platform. The spacing adjustment component is cooperatively installed with an extrusion component for extruding and forming lithium battery electrode sheets through a quick-release component. Two cooling components for cooling the extrusion component are cooperatively installed on the spacing adjustment component. Two flatness detection components for detecting the flatness of the surface of the extrusion component are cooperatively installed on the spacing adjustment component;

[0008] The cooling component includes a second connecting frame, and a water storage tank is installed on the second connecting frame. A plurality of blowing fans are evenly distributed on the outer wall of the water storage tank away from the second connecting frame;

[0009] A plurality of support frames are evenly distributed on the outer wall of the water storage tank where the blowing fans are installed. A cloth is installed between the inner sides of the plurality of support frames. One end of the cloth penetrates through the outer wall of the water storage tank and extends into the inner cavity of the water storage tank;

[0010] On the upper and lower sides of the side wall of the water storage tank where the support frame is installed, mounting plates are respectively installed, and an attaching plate is installed between the two mounting plates.

[0011] As a preferred solution of the present invention, the spacing adjustment assembly includes a first motor and a second mounting frame, and a first mounting frame and a second mounting frame are respectively installed on the left and right sides of the top surface of the working platform.

[0012] As a preferred solution of the present invention, a threaded rod is rotatably installed on the bottom surface of the inner cavity of the second mounting frame, and first moving blocks are symmetrically threadedly connected to the threaded rod. A first motor is arranged on the top of the second mounting frame. The power output shaft of the first motor penetrates through the top surface of the second mounting frame and extends into the interior of the second mounting frame, and the power output shaft of the first motor is connected to the threaded rod;

[0013] A groove is formed on the top surface of the first moving block, and a second motor is installed in the groove. The power output shaft of the second motor penetrates through the inner wall of the groove and extends to the outside;

[0014] A positioning column is installed on the bottom surface of the inner cavity of the first mounting frame, and two second moving blocks are slidably installed on the positioning column.

[0015] As a preferred solution of the present invention, the extrusion assembly includes a connecting shaft, an extrusion roller is installed on the outer wall of the connecting shaft, and a quick-release assembly is cooperatively installed between the connecting shaft and the spacing adjustment assembly.

[0016] As a preferred solution of the present invention, the quick-release assembly includes a clamping frame and a clamping groove. Connecting rings are respectively installed on both sides of the outer wall of the connecting shaft. Second springs are respectively installed on the sides of the two connecting rings away from each other. Limiting frames are respectively installed on the sides of the two second springs away from the connecting rings. A through groove is formed in the limiting frame, and the connecting shaft is slidably installed in the through groove. Fixed blocks are symmetrically installed on both sides of the outer wall of the connecting shaft. Moving grooves are symmetrically arranged in the inner cavity of the through groove, and the fixed blocks are slidably installed in the moving grooves.

[0017] As a preferred solution of the present invention, a clamping frame is installed at the end of the power output shaft of the second motor, and a clamping frame is also rotatably installed on the side of the second moving block close to the second mounting frame. A clamping groove is formed on the side of the clamping frame close to the connecting shaft, and the limiting frame is clamped in the clamping groove.

[0018] As a preferred solution of the present invention, the flatness detection assembly includes a first connecting frame, a connecting frame is installed on the side wall of the first connecting frame, and a plurality of detection mechanisms are evenly distributed in the inner cavity of the connecting frame;

[0019] The detection mechanism includes a connecting sleeve. A plurality of connecting sleeves are evenly distributed on one side of the inner cavity of the connecting frame. A pressure sensor is installed at the bottom of the inner cavity of the connecting sleeve. A fixing ring is installed on the side of the inner cavity of the connecting sleeve away from the pressure sensor. A first spring is installed on the side of the fixing ring close to the connecting sleeve. A sliding ring is installed on the side of the first spring away from the fixing ring. A connecting rod is installed in the inner wall of the sliding ring, and the connecting rod is slidably installed in the inner cavity of the fixing ring.

[0020] As a preferred solution of the present invention, the end of the connecting rod contacts the outer wall of the extrusion roller, and an attaching plate contacts the outer wall of the extrusion roller.

[0021] As a preferred solution of the present invention, a first connecting frame is connected between the first moving block and the second moving block, and a second connecting frame is connected between the first moving block and the second moving block.

[0022] As a preferred solution of the present invention, a control module is installed on the top surface of the working platform. A display screen is installed on the top surface of the working platform close to the control module, and the control module is electrically connected to the display screen.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In the present invention, by arranging a cooling component in the lithium battery electrode sheet extrusion forming device, and through the mutual cooperation of the various structures in this component, when the device is in use, water is injected into the water storage tank. After the cloth contacts the water, due to the soaking performance of the cloth, the cloth will be quickly wetted. At the same time, the blower fan is started to blow air on the cloth. When the air generated by the blower fan passes through the gaps on the cloth, it carries the water vapor on the cloth and cools the airflow generated by the blower fan. Thus, when the cooled airflow contacts the attaching plate, the temperature of the attaching plate will be reduced, and further, the surface temperature of the extrusion roller in contact with the attaching plate can be reduced. This solves the problem that when the extrusion roller in the existing lithium battery electrode sheet extrusion forming device performs extrusion operations, stress will be generated between the extrusion roller and the electrode sheet, which will further cause the temperature of the extrusion roller to rise. As the temperature increases, the physical and chemical properties of components such as active substances, binders, and conductive agents in the electrode sheet will change.

[0025] 2. In the present invention, by arranging a quick-release component in the lithium battery electrode sheet extrusion forming device, and through the mutual cooperation of the various structures in this component with the first moving block, the second moving block, and the connecting shaft, when the device is in use, the limiting frame can be pressed to be pressed and attached to the outer wall of the connecting shaft. At this time, the limiting frame will move out of the clamping groove, releasing the limitation on the limiting frame and the connecting shaft on which the limiting frame is installed, achieving the benefit of quickly disassembling and replacing damaged extrusion components. This solves the problem that in the existing device, the extrusion components are connected to the device by bolts, and it is inconvenient to replace them when the extrusion components are damaged.

[0026] 3. In the present invention, by providing a flatness detection component in the lithium battery electrode sheet extrusion molding device, and using the cooperation of each structure in this component, during the use of the device, the connecting rod and the extrusion roller are in contact with each other. When the surface of the extrusion roller is deformed and sunken after long-term use, the pressure transmitted by the connecting rod to the pressure sensor will change. At this time, the pressure sensor will transmit the signal to the control module. After the processor in the control module processes the data, it is displayed on the display screen, achieving the benefit of quickly detecting the deformation of the surface of the extrusion roller and solving the problem that the deformation of the surface of the extrusion roller of the existing device cannot be detected in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the front view structural schematic diagram of the present invention;

[0028] Figure 2 is the rear view structural schematic diagram of the present invention;

[0029] Figure 3 is the structural schematic diagram of the spacing adjustment component of the present invention;

[0030] Figure 4 is the structural schematic diagram of the quick-release component of the present invention;

[0031] Figure 5 is the structural schematic diagram of the temperature reduction component of the present invention;

[0032] Figure 6 is the sectional view structural schematic diagram of the temperature reduction component of the present invention;

[0033] Figure 7 is of the present invention Figure 6 magnified structural schematic diagram at A;

[0034] Figure 8 is the structural schematic diagram of the flatness detection component of the present invention;

[0035] Figure 9 is the structural schematic diagram of the first spring installation of the present invention;

[0036] Figure 10 is the structural schematic diagram of the sliding ring installation of the present invention.

[0037] In the figure: 1, working platform; 2, display screen; 3, control module; 4, spacing adjustment component; 401, first motor; 402, threaded rod; 403, first moving block; 404, first mounting frame; 405, positioning column; 406, second moving block; 407, second mounting frame; 408, groove; 409, second motor; 5, flatness detection component; 501, first connecting frame; 502, connecting frame; 503, detection mechanism; 5031, connecting rod; 5032, connecting sleeve; 5033, pressure sensor; 5034, first spring; 5035, sliding ring; 5036, fixed ring; 6, cooling component; 601, second connecting frame; 602, water storage tank; 603, blowing fan; 604, cloth; 605, support frame; 606, mounting plate; 607, attaching plate; 7, extrusion component; 701, connecting shaft; 702, extrusion roller; 8, quick-release component; 801, clamping frame; 802, clamping groove; 803, limiting frame; 804, through groove; 805, second spring; 806, connecting ring; 807, fixed block; 808, moving groove. Specific implementation

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] To facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0042] Embodiment: Please refer to Figures 1-10 A lithium battery electrode sheet extrusion forming device as shown, which includes a working platform 1, a spacing adjustment component 4, a flatness detection component 5, a cooling component 6, an extrusion component 7 and a quick-release component 8. A spacing adjustment component 4 for adjusting the distance between two extrusion components 7 is installed on the top of the working platform 1 in a matching manner. The spacing adjustment component 4 is installed with an extrusion component 7 for extruding and forming the battery electrode sheet through a quick-release component 8 in a matching manner. Two groups of cooling components 6 for cooling the extrusion component 7 are installed on the spacing adjustment component 4 in a matching manner. Two groups of flatness detection components 5 for detecting the surface flatness of the extrusion component 7 are installed on the spacing adjustment component 4 in a matching manner;

[0043] The cooling component 6 includes a second connecting frame 601. A water storage tank 602 is installed on the second connecting frame 601. A plurality of blowing fans 603 are evenly distributed on the outer wall of the water storage tank 602 away from the second connecting frame 601;

[0044] A plurality of support frames 605 are evenly distributed on the outer wall of the water storage tank 602 where the blowing fans 603 are installed. A cloth 604 is installed between the inner sides of the plurality of support frames 605. One end of the cloth 604 penetrates through the outer wall of the water storage tank 602 and extends into the inner cavity of the water storage tank 602;

[0045] Among them, the cloth 604 is made of materials with good water permeability such as ramie, flax or cotton cloth, so as to achieve the benefit that the water in the water storage tank 602 can quickly wet the whole water storage tank 602;

[0046] And the support frame 605 is used to protect and support the cloth 604;

[0047] Installation plates 606 are respectively installed above and below the side wall of the water storage tank 602 where the support frame 605 is installed. An attachment plate 607 is installed between the two installation plates 606;

[0048] A second connecting frame 601 is connected between the first moving block 403 and the second moving block 406.

[0049] In this embodiment, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the spacing adjustment component 4 includes a first motor 401 and a second mounting frame 407. The first mounting frame 404 and the second mounting frame 407 are respectively installed on the left and right sides of the top surface of the working platform 1;

[0050] The bottom surface of the inner cavity of the second mounting frame 407 is rotatably installed with a threaded rod 402. The threaded rod 402 is symmetrically threadedly connected with a first moving block 403. A first motor 401 is arranged on the top of the second mounting frame 407. The power output shaft of the first motor 401 penetrates through the top surface of the second mounting frame 407 and extends to the inside of the second mounting frame 407. The power output shaft of the first motor 401 is connected with the threaded rod 402;

[0051] A groove 408 is formed on the top surface of the first moving block 403. A second motor 409 is installed in the groove 408. The power output shaft of the second motor 409 penetrates through the inner wall of the groove 408 and extends to the outside;

[0052] A positioning column 405 is installed on the bottom surface of the inner cavity of the first mounting frame 404. Two second moving blocks 406 are slidably installed on the positioning column 405;

[0053] Among them, the threaded rod 402 adopts a double - threaded design. Thus, when the threaded rod 402 starts to rotate, the moving directions of the two first moving blocks 403 on the threaded rod 402 will be opposite, achieving the benefit of quickly adjusting the distance between the two squeezing rollers 702.

[0054] In this embodiment, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the squeezing component 7 includes a connecting shaft 701. An extrusion roller 702 is installed on the outer wall of the connecting shaft 701. A quick - release component 8 is installed between the connecting shaft 701 and the spacing adjustment component 4 in a matching manner;

[0055] The quick - release component 8 includes a clamping frame 801 and a clamping groove 802. Connecting rings 806 are respectively installed on both sides of the outer wall of the connecting shaft 701. Second springs 805 are respectively installed on the sides of the two connecting rings 806 away from each other. Limiting frames 803 are respectively installed on the sides of the two second springs 805 away from the connecting rings 806. A through - slot 804 is formed in the limiting frame 803. The connecting shaft 701 is slidably installed in the through - slot 804. Fixed blocks 807 are symmetrically installed on both sides of the outer wall of the connecting shaft 701. Moving slots 808 are symmetrically arranged in the inner cavity of the through - slot 804. The fixed blocks 807 are slidably installed in the moving slots 808;

[0056] A clamping frame 801 is installed at the end of the power output shaft of the second motor 409. A clamping frame 801 is also rotatably installed on the side of the second moving block 406 close to the second installation frame 407. A clamping groove 802 is formed on the side of the clamping frame 801 close to the connecting shaft 701. A limiting frame 803 is clamped in the clamping groove 802;

[0057] Among them, the limiting frame 803 and the clamping groove 802 are designed in a rectangular shape, so that when the limiting frame 803 is clamped into the clamping groove 802, there will be no rotation between the clamping groove 802 and the limiting frame 803;

[0058] The design of the fixing block 807 and the moving groove 808 improves the integrity between the connecting shaft 701 and the limiting frame 803, and prevents the limiting frame 803 from rotating on the outer wall of the connecting shaft 701.

[0059] In this embodiment, referring to Figure 1 and Figure 2 as shown, the flatness detection component 5 includes a first connecting frame 501. A connecting frame 502 is installed on the side wall of the first connecting frame 501. A plurality of detection mechanisms 503 are evenly distributed in the inner cavity of the connecting frame 502;

[0060] A first connecting frame 501 is connected between the first moving block 403 and the second moving block 406;

[0061] The detection mechanism 503 includes a connecting sleeve 5032. A plurality of connecting sleeves 5032 are evenly distributed on one side of the inner cavity of the connecting frame 502. A pressure sensor 5033 is installed at the bottom of the inner cavity of the connecting sleeve 5032. A fixing ring 5036 is installed on the side of the inner cavity of the connecting sleeve 5032 away from the pressure sensor 5033. A first spring 5034 is installed on the side of the fixing ring 5036 close to the connecting sleeve 5032. A sliding ring 5035 is installed on the side of the first spring 5034 away from the fixing ring 5036. A connecting rod 5031 is installed in the inner wall of the sliding ring 5035. The connecting rod 5031 is slidably installed in the inner cavity of the fixing ring 5036.

[0062] In this embodiment, referring to Figure 1 , Figure 2 , Figure 8 and Figure 9 as shown, the end of the connecting rod 5031 is in contact with the outer wall of the extrusion roller 702, and the outer wall of the extrusion roller 702 is in contact with the attaching plate 607;

[0063] Among them, the attaching plate 607 can be made of aluminum. Since aluminum has good heat conduction performance, when the attaching plate 607 is cooled, it can quickly absorb the temperature on the extrusion roller 702.

[0064] In this embodiment, referring to Figure 1 and Figure 2As shown in the figure, a control module 3 is installed on the top surface of the working platform 1, and a display screen 2 is installed on one side of the top surface of the working platform 1 close to the control module 3. The control module 3 is electrically connected to the display screen 2;

[0065] Among them, the control module 3 is electrically connected to all the electrical devices in the device and controls the startup and shutdown of the electrical devices. Data processing can be performed on the pressure sensor 5033 in the control module 3.

[0066] Working principle: When in use, first power on all the electrical devices used in the device;

[0067] When in use, start the first motor 401 to drive the threaded rod 402 to rotate. Since the threaded rod 402 is of a two-way design, when the threaded rod 402 rotates, the distance between the two first moving blocks 403 will be adjusted. Finally, start the second motor 409 and drive the extrusion assembly 7 to operate through the quick-release assembly 8;

[0068] When the device is in use, water is injected into the water storage tank 602. After the cloth 604 comes into contact with the water, the cloth 604 will be quickly wetted by using the soaking performance of the cloth 604. At the same time, start the blower fan 603 to blow air on the cloth 604. When the air generated by the blower fan 603 passes through the gaps on the cloth 604, it carries the water vapor on the cloth 604 and cools the airflow generated by the blower fan 603. Thus, when the cooled airflow contacts the attachment plate 607, the temperature of the attachment plate 607 will be reduced, and further, the surface of the extrusion roller 702 in contact with the attachment plate 607 can be cooled;

[0069] During the use of the device, the connecting rod 5031 and the extrusion roller 702 are in contact with each other. When the surface of the extrusion roller 702 is deformed and dented after long-term use, the pressure transmitted by the connecting rod 5031 to the pressure sensor 5033 will change. At this time, the pressure sensor 5033 will transmit the signal to the control module 3. After the processor in the control module 3 processes the data, it is displayed by the display screen 2, realizing the benefit of quickly detecting the deformation of the surface of the extrusion roller 702;

[0070] When the outer surface of the extrusion roller 702 is damaged, the limit frame 803 can be pressed to be attached to the outer wall of the connecting shaft 701. At this time, the limit frame 803 will move out of the clamping groove 802, releasing the limit on the limit frame 803 and the connecting shaft 701 on which the limit frame 803 is installed, realizing the benefit of quickly disassembling and replacing the damaged extrusion assembly 7.

[0071] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery electrode sheet extrusion molding device, comprising a working platform (1), a spacing adjustment component (4), a flatness detection component (5), a cooling component (6), an extrusion component (7) and a quick release component (8), characterized in that: The top of the working platform (1) is equipped with a spacing adjustment component (4) for adjusting the distance between the two extrusion components (7); the spacing adjustment component (4) is equipped with an extrusion component (7) for extruding and forming a battery electrode sheet via a quick-release component (8); two groups of cooling components (6) for cooling the extrusion component (7) are equipped with the spacing adjustment component (4); and two groups of flatness detection components (5) for detecting the flatness of the surface of the extrusion component (7) are equipped with the spacing adjustment component (4); The cooling component (6) comprises a second connecting frame (601), a water storage tank (602) is mounted on the second connecting frame (601), and a plurality of blowing fans (603) are evenly distributed on an outer wall of a side of the water storage tank (602) away from the second connecting frame (601); A plurality of support frames (605) are evenly distributed on the outer wall of one side of the water storage tank (602) on which the blowing fan (603) is installed, and a piece of cloth (604) is installed between the inner sides of the plurality of support frames (605), and one end of the piece of cloth (604) penetrates the outer wall of the water storage tank (602) and extends into the inner cavity of the water storage tank (602); The water storage tank (602) is mounted with a support frame (605) having mounting plates (606) mounted above and below the side walls, respectively, and an attachment plate (607) mounted between the two mounting plates (606); The spacing adjustment component (4) comprises a first motor (401) and a second mounting frame (407), and the first mounting frame (404) and the second mounting frame (407) are respectively mounted on the left and right sides of the top surface of the working platform (1); The extrusion assembly (7) comprises a connecting shaft (701), an extrusion roller (702) is mounted on the outer wall of the connecting shaft (701), and a quick-release assembly (8) is mounted between the connecting shaft (701) and the spacing adjustment assembly (4); The outer wall of the squeezing roller (702) contacts the end of the connecting rod (5031), and the outer wall of the squeezing roller (702) contacts the attachment plate (607).

2. A lithium battery electrode sheet extrusion molding device according to claim 1, characterized in that: A threaded rod (402) is rotatably mounted on the bottom surface of the inner cavity of the second mounting frame (407); a first moving block (403) is symmetrically threadedly connected to the threaded rod (402); a first motor (401) is arranged on the top of the second mounting frame (407); a power output shaft of the first motor (401) passes through the top surface of the second mounting frame (407) and extends into the interior of the second mounting frame (407); and the power output shaft of the first motor (401) is connected to the threaded rod (402); A groove (408) is formed on the top surface of the first moving block (403), a second motor (409) is installed in the groove (408), and a power output shaft of the second motor (409) passes through the inner wall of the groove (408) and extends to the outside; A positioning column (405) is installed on the bottom surface of the inner cavity of the first installation frame (404), and two second moving blocks (406) are slidably installed on the positioning column (405).

3. A lithium battery electrode sheet extrusion molding device according to claim 2, characterized in that: The quick-release assembly (8) comprises a snap-on frame (801) and a snap-on groove (802), connecting rings (806) are respectively installed on both sides of the outer wall of the connecting shaft (701), second springs (805) are respectively installed on the sides of the two connecting rings (806) away from each other, and limiting frames (803) are respectively installed on the sides of the two second springs (805) away from the connecting rings (806), a through groove (804) is provided in the limiting frame (803), the connecting shaft (701) is slidably installed in the through groove (804), fixed blocks (807) are respectively symmetrically installed on both sides of the outer wall of the connecting shaft (701), and movable grooves (808) are symmetrically provided in the inner cavity of the through groove (804), and the fixed block (807) is slidably installed in the movable groove (808).

4. A lithium battery electrode sheet extrusion molding device according to claim 3, characterized in that: A snap-on frame (801) is installed on the end of the power output shaft of the second motor (409), and a snap-on frame (801) is also rotatably installed on a side of the second movable block (406) close to the second installation frame (407). A snap-on groove (802) is provided on a side of the snap-on frame (801) close to the connecting shaft (701), and a limit frame (803) is snap-on in the snap-on groove (802).

5. A lithium battery electrode sheet extrusion molding device according to claim 4, characterized in that: The flatness detection assembly (5) comprises a first connecting frame (501), a connecting frame (502) being mounted on a side wall of the first connecting frame (501), and a plurality of detection mechanisms (503) being evenly distributed in an inner cavity of the connecting frame (502); The detection mechanism (503) comprises a connecting sleeve (5032), a plurality of connecting sleeves (5032) are evenly distributed on one side of the inner cavity of the connecting frame (502), a pressure sensor (5033) is installed at the bottom of the inner cavity of the connecting sleeve (5032), a fixing ring (5036) is installed on the side of the inner cavity of the connecting sleeve (5032) away from the pressure sensor (5033), a first spring (5034) is installed on the side of the fixing ring (5036) close to the connecting sleeve (5032), a sliding ring (5035) is installed on the side of the first spring (5034) away from the fixing ring (5036), a connecting rod (5031) is installed in the inner wall of the sliding ring (5035), and the connecting rod (5031) is slidably installed in the inner cavity of the fixing ring (5036).

6. A lithium battery electrode sheet extrusion molding device according to claim 5, characterized in that: A first connecting frame (501) is connected between the first moving block (403) and the second moving block (406), and a second connecting frame (601) is connected between the first moving block (403) and the second moving block (406).

7. A lithium battery electrode sheet extrusion molding device according to claim 6, characterized in that: A control module (3) is installed on the top surface of the working platform (1), a display screen (2) is installed on a side of the top surface of the working platform (1) close to the control module (3), and the control module (3) is electrically connected to the display screen (2).

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