A dry electrode forming device with a stepped pressing roller structure

Abstract

The present invention discloses a dry-process electrode forming device with a stepped pressing roller structure, which belongs to the technical field of electrode roller forming equipment and includes two assembly boxes arranged opposite to each other, wherein a driving member is provided in the assembly box. In the present invention, the tension on the substrate is adjusted to avoid wrinkles on the substrate, thereby ensuring the flatness of the raw material membrane and the substrate during compression molding. The first rotating rod and the second rotating rod drive the counterweight box to rotate eccentrically, so that the forming rollers can vibrate relative to each other. The relative vibration of the forming rollers not only increases the molding pressure on the raw material, but also optimizes the molecular arrangement of the material through periodic pressure fluctuations, making the membrane density more uniform and the surface finish higher. The counter-rotating eccentric counterweight design offsets the unidirectional inertia moment, reduces the bearing load, and extends the service life of the equipment. At the same time, the heat cycle device and the hollow shaft design achieve efficient heating of the precision pressing roller, significantly improving the bonding speed and molding quality of the membrane and the substrate.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrode roller forming equipment, and in particular relates to a dry-process electrode forming device with a stepped roller structure. Background Art

[0002] The dry electrode forming device is a key equipment used to manufacture battery electrodes (such as lithium-ion batteries, solid-state batteries, etc.). Its core feature is that it does not require the use of solvents (such as NMP or water). The mixed powder of active materials, conductive agents and binders is directly pressed into electrode sheets through a dry process. Compared with the traditional wet coating process, dry forming technology is more environmentally friendly, consumes less energy, and is suitable for new battery materials.

[0003] The document with publication number CN119502437A discloses a dry electrode rolling device with controllable pressure roller gap, including a pressing roller with an inner cavity, at least two pressing rollers, and a roller gap between the two pressing rollers; a first touch member is arranged in the inner cavity and is separate from the pressing roller, the first touch member has a first touch portion, the first touch portion touches the inner wall of the inner cavity, the first touch portion and the roller gap are respectively located on the inner and outer sides of the roller wall of the pressing roller. Through the above technical solution, the problem of uneven distribution of dry powder materials in the prior art is solved, which causes deformation of the pressing roller, reduces the gap between adjacent pressing rollers, affects the quality of the electrode diaphragm after forming, and may cause uneven thickness, uneven surface, etc. However, in the actual processing process, since the simple extrusion force between the forming rollers is difficult to generate sufficient pressure on the raw materials, it will affect the forming quality of the diaphragm. Therefore, improvement is needed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the simple extrusion force between the forming rollers cannot generate enough pressure on the raw materials, which will affect the forming quality of the diaphragm, and to propose a dry electrode forming device with a stepped pressure roller structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A dry electrode forming device with a stepped pressing roller structure comprises two assembly boxes arranged opposite to each other, a driving member being provided in the assembly boxes, and a plurality of fine pressing rollers and two forming rollers arranged opposite to each other being provided between the two driving members, a heating assembly being provided in the fine pressing rollers, a compacting assembly being provided in the forming rollers, and a tension adjustment assembly being provided below the two forming rollers;

[0007] The tamping assembly includes two relatively arranged connecting frames, one side of the connecting frame is connected to a connecting shaft, the connecting shaft is connected to the inner wall of the forming roller, and the two relatively arranged connecting frames are respectively rotatably connected with a first rotating rod and a second rotating rod, the first rotating rod and the second rotating rod rotate in opposite directions, and the outer surfaces of the first rotating rod and the second rotating rod are connected to a plurality of fixing parts distributed in a linear array, one end of the fixing part is connected to a counterweight box, and during the relative rotation of the two forming rollers, the first rotating rod and the second rotating rod drive the two sets of counterweight boxes to rotate in opposite directions, so that the forming rollers can vibrate relative to each other.

[0008] The transmission gear revolves on the fixed gear ring, so that the two transmission gears rotate in the same direction, and the transmission gear drives the first rotating rod to rotate in the same direction, and the other transmission gear drives the second bevel gear to rotate in the same direction. The second bevel gear drives the first bevel gear to rotate in the opposite direction through the third bevel gear, and the first bevel gear drives the second rotating rod to rotate in the opposite direction, so that the first rotating rod and the second rotating rod rotate in opposite directions. The first rotating rod and the second rotating rod drive the counterweight box to rotate eccentrically, so that the forming rollers can vibrate relative to each other. The relative vibration of the forming rollers not only increases the forming pressure on the raw materials.

[0009] As a further description of the above technical solution:

[0010] The counterweight box is connected to a mounting rod, and two symmetrically arranged moving rods are slidably connected to the mounting rod. One end of the two moving rods is connected to the same sliding plate, and the sliding plate is in contact with the mounting rod. The end of the moving rod away from the sliding plate is connected to a limiting plate. A linkage spring is sleeved on the outer surface of the moving rod, and the two ends of the linkage spring are respectively connected to one side of the mounting rod and the limiting plate, and damping material is filled between the sliding plate and the counterweight box.

[0011] The damping system formed by the sliding plate, moving rod, linkage spring and damping material arranged in the counterweight box can effectively absorb high-frequency vibration energy, greatly reduce the shaking of the forming roller during vibration, and enhance the impact resistance of the mechanical structure.

[0012] As a further description of the above technical solution:

[0013] One end of the connecting shaft extends to the outside of the forming roller and is connected to the driving member. One side of the driving member is connected to a fixed gear ring, and the inner side of the fixed gear ring is meshed with two symmetrically arranged transmission gears.

[0014] As a further description of the above technical solution:

[0015] Both ends of the second rotating rod extend to the other side of the connecting frame and are connected to the first bevel gear, one side of the first bevel gear is meshed and connected to the third bevel gear, one side of the third bevel gear is meshed and connected to the second bevel gear, one side of the third bevel gear is rotatably connected to one side of the connecting shaft, one side of the second bevel gear is rotatably connected to one side of the inner wall of the forming roller through the rotating shaft, and one end of the first rotating rod and the rotating shaft extends to the outside of the forming roller and is connected to one side of the transmission gear.

[0016] Through the transmission between the first bevel gear, the second bevel gear and the third bevel gear, the second rotating rod and the first rotating rod rotate in the opposite direction, so that the two sets of counterweight boxes can rotate in the opposite direction. The counter-rotating eccentric counterweight design offsets the unidirectional inertia moment, reduces the bearing load, and extends the service life of the equipment.

[0017] As a further description of the above technical solution:

[0018] The tension adjustment assembly includes two relatively arranged mounting cross plates, the mounting cross plates being connected to the bottom of the assembly box, one side of the mounting cross plate being rotatably connected to a rotating column, one end of the rotating column being slidably connected to a sliding rod, the other end of the sliding rod being connected to a connecting piece, a return spring being sleeved on the outer surface of the sliding rod, the two ends of the return spring being respectively connected to one side of the connecting piece and one side of the rotating column, a direction adjustment frame being hinged on one side of the connecting piece, a first adjusting roller and a second adjusting roller being rotatably connected between the two direction adjustment frames, the first adjusting roller and the second adjusting roller being arranged below the forming roller.

[0019] The steering frame drives the position change of the first adjustment roller and the second adjustment roller, and cooperates with the reset spring to adjust the pressure on the substrate and the raw material membrane to ensure that the substrate is always kept taut and avoid wrinkles on the substrate, thereby ensuring the flatness of the raw material membrane and the substrate during pressing and improving the quality of the finished product.

[0020] As a further description of the above technical solution:

[0021] One side of the mounting cross plate is rotatably connected to an electric push rod, the other end of the electric push rod is hinged to one side of the rotating column, and the cross-section of the steering frame is V-shaped.

[0022] As a further description of the above technical solution:

[0023] The heating assembly includes an inner cylinder arranged inside the fine-pressing roller, both ends of the inner cylinder are connected to the inner wall of the fine-pressing roller, a plurality of through holes distributed in a circumferential array are opened on the outer circumference of the inner cylinder, both sides of the outer surface of the inner cylinder are rotatably connected with inner gear rings, a plurality of turbulent blades distributed in a circumferential array are connected between the two inner gear rings, a plurality of connecting pipes distributed in a circumferential array are connected to both sides of the fine-pressing roller, the other ends of the plurality of connecting pipes are connected to a rotating air ring, the outer circumference of the rotating air ring is rotatably connected with a fixed air ring, one side of the fixed air ring is connected to one side of the driving member, and the rotating air ring is communicated with the fixed air ring.

[0024] The heat circulation device and hollow shaft design enable efficient heating of the embossing roller, significantly improving the bonding speed and molding quality between the film and the substrate. The counter-flow and multi-channel hot air circulation structure ensure even heat distribution, avoiding local overheating or uneven heating.

[0025] As a further description of the above technical solution:

[0026] The bottom of the fixed air ring is connected to a return air pipe, and both sides of the fine pressing roller are connected to a hollow shaft, the hollow shaft is transmission-connected to the driving member, one end of the hollow shaft is rotatably connected to a delivery pipe, the delivery pipe is connected to the hollow shaft, and the other end of the return air pipe and the delivery pipe are connected to the same heat circulation device, and the connecting pipe is arranged between the fine pressing roller and the inner cylinder.

[0027] As a further description of the above technical solution:

[0028] One side of the driving member is connected to an outer gear ring, and both sides of the outer gear ring are meshed with outer gears. One side of the outer gear is connected to a transmission shaft, and the transmission shaft is rotatably connected to the embossing roller. The other end of the transmission shaft extends to the inside of the embossing roller and is connected to an internal gear, and one side of the internal gear is meshed with the inner gear ring.

[0029] The linkage mechanism of the outer gear and the inner gear drives the spoiler blades to rotate, further enhancing the dispersion of the hot air flow and making the fine pressing roller heated more evenly.

[0030] As a further description of the above technical solution:

[0031] A main platform is provided on the top of the two assembly boxes, a support frame is connected to the bottom of the main platform, a finished product winding device is provided on the top of the main platform, a feeding device is provided on the top of the two forming rollers, and an unwinding device is provided on both sides of the two assembly boxes.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] In the present invention, with the comprehensive cooperation of the heating component, the tension adjustment component and the compacting component, the tension on the substrate is adjusted by changing the positional relationship between the first adjustment roller, the second adjustment roller and the forming roller to avoid wrinkles on the substrate, thereby ensuring the flatness of the raw material membrane and the substrate during pressing and forming. The first rotating rod and the second rotating rod drive the counterweight box to rotate eccentrically, so that the forming rollers can vibrate relatively. The relative vibration of the forming rollers not only increases the forming pressure on the raw material, but also optimizes the molecular arrangement of the material through periodic pressure fluctuations, making the membrane density more uniform and the surface smoother. The counter-rotating eccentric counterweight design offsets the unidirectional inertia moment, reduces the bearing load, and extends the service life of the equipment. At the same time, the heat circulation device and the hollow shaft design achieve efficient heating of the precision pressing roller, which significantly improves the bonding speed and forming quality of the membrane and the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0035] Figure 2 A schematic diagram of the three-dimensional structure from another perspective of the present invention;

[0036] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0037] Figure 4 Schematic diagram of the three-dimensional structure of the fine pressing roller in the present invention;

[0038] Figure 5 Schematic diagram of the three-dimensional structure of the forming roller and the tension adjustment assembly in the present invention;

[0039] Figure 6 For the present invention Figure 5 A local enlarged structural diagram of point A;

[0040] Figure 7 Schematic diagram of the three-dimensional structure of the forming roller and the tamping assembly in the present invention;

[0041] Figure 8 Schematic diagram of the internal three-dimensional structure of the tamping assembly in the present invention;

[0042] Figure 9 For the present invention Figure 8 A schematic diagram of the partially enlarged structure at point B;

[0043] Figure 10 For the present invention Figure 8 A schematic diagram of the partially enlarged structure at point C;

[0044] Figure 11 This is a schematic diagram of the three-dimensional split structure of the heating component in the present invention;

[0045] Figure 12 For the present invention Figure 11 Schematic diagram of the local enlarged structure at point D.

[0046] Legend:

[0047] 1. Main platform; 2. Finished product winding device; 3. Fine pressing roller; 4. Feeding device; 5. Support frame; 6. Heating assembly; 601. Heat circulation device; 602. Conveying pipe; 603. Return air pipe; 604. Fixed air ring; 605. Rotating air ring; 606. Connecting pipe; 607. Inner cylinder; 608. Through hole; 609. Turbine blade; 610. Outer gear ring; 611. Outer gear; 612. Inner gear; 613. Inner gear ring; 7. Forming roller; 8. Tension adjustment assembly; 801. Mounting cross plate; 802. First adjustment roller; 803. Direction adjustment frame; 804. Second adjustment roller; 80 5. Electric push rod; 806. Rotating column; 807. Sliding rod; 808. Return spring; 809. Connecting piece; 9. Tamping assembly; 901. Fixed gear ring; 902. Connecting shaft; 903. Transmission gear; 904. Connecting frame; 905. First rotating rod; 906. Second rotating rod; 907. Fixed piece; 908. Counterweight box; 909. Sliding plate; 910. Mounting rod; 911. Moving rod; 912. Linkage spring; 913. First bevel gear; 914. Second bevel gear; 915. Third bevel gear; 10. Unwinding device; 11. Driving piece; 12. Assembly box. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] See also Figures 1-12 The present invention provides a technical solution: a dry electrode forming device with a stepped pressing roller structure, comprising two assembly boxes 12 arranged opposite to each other, a driving member 11 being provided in the assembly box 12, and a plurality of fine pressing rollers 3 and two oppositely arranged forming rollers 7 being provided between the two oppositely arranged driving members 11, a heating component 6 being provided in the fine pressing roller 3, a compacting component 9 being provided in the forming roller 7, and a tension adjustment component 8 being provided below the two forming rollers 7;

[0050] Among them, the tamping assembly 9 includes two oppositely arranged connecting frames 904, one side of the connecting frame 904 is connected to a connecting shaft 902, the connecting shaft 902 is connected to the inner wall of the forming roller 7, and the two oppositely arranged connecting frames 904 are rotatably connected with a first rotating rod 905 and a second rotating rod 906 respectively. The first rotating rod 905 and the second rotating rod 906 rotate in opposite directions. The outer surfaces of the first rotating rod 905 and the second rotating rod 906 are connected to a plurality of fixing members 907 distributed in a linear array, and one end of the fixing member 907 is connected to a counterweight box 908. During the relative rotation of the two forming rollers 7, the first rotating rod 905 and the second rotating rod 906 drive the two sets of counterweight boxes 908 to rotate in opposite directions, so that the forming rollers 7 can vibrate relative to each other;

[0051] The counterweight box 908 is connected to a mounting rod 910, and two symmetrically arranged moving rods 911 are slidably connected to the mounting rod 910. One end of the two moving rods 911 is connected to the same sliding plate 909, and the sliding plate 909 is in contact with the mounting rod 910. The end of the moving rod 911 away from the sliding plate 909 is connected to the limit plate. The outer surface of the moving rod 911 is provided with a linkage spring 912, and the two ends of the linkage spring 912 are respectively connected to one side of the mounting rod 910 and the limit plate. Damping material is filled between the sliding plate 909 and the counterweight box 908.

[0052] One end of the connecting shaft 902 extends to the outside of the forming roller 7 and is connected to the driving member 11. One side of the driving member 11 is connected to a fixed gear ring 901. The inner side of the fixed gear ring 901 is meshed with two symmetrically arranged transmission gears 903.

[0053] Both ends of the second rotating rod 906 extend to the other side of the connecting frame 904 and are connected to the first bevel gear 913. One side of the first bevel gear 913 is meshed with the third bevel gear 915. One side of the third bevel gear 915 is meshed with the second bevel gear 914. One side of the third bevel gear 915 is rotatably connected to one side of the connecting shaft 902. One side of the second bevel gear 914 is rotatably connected to one side of the inner wall of the forming roller 7 through the rotating shaft. One end of the first rotating rod 905 and the rotating shaft extends to the outside of the forming roller 7 and is connected to one side of the transmission gear 903.

[0054] Specifically, the two forming rollers 7 rotate relative to each other under the drive of the driving member 11, and the two forming rollers 7 squeeze the raw material so that the raw material can form a diaphragm under the action of pressure. In this process, the driving member 11 drives the forming rollers 7 to rotate relative to each other through the connecting shaft 902, and the forming rollers 7 drive the transmission gear 903 to rotate. The transmission gear 903 revolves on the fixed gear ring 901, so that the two transmission gears 903 rotate in the same direction, and the transmission gear 903 drives the first rotating rod 905 to rotate in the same direction. The other transmission gear 903 drives the second bevel gear 914 to rotate in the same direction. The second bevel gear 914 drives the first bevel gear 913 to rotate in the opposite direction through the third bevel gear 915. The first bevel gear 913 drives the second rotating rod 906 to rotate in the opposite direction, so that the first rotating rod 905 and the second rotating rod 906 rotate in opposite directions. A rotating rod 905 and a second rotating rod drive the counterweight box 908 906 to rotate eccentrically, so that the forming roller 7 can vibrate relatively. The relative vibration of the forming roller 7 not only increases the forming pressure on the raw material, but also optimizes the molecular arrangement of the material through periodic pressure fluctuations, making the diaphragm density more uniform and the surface smoothness higher. The counter-rotating eccentric counterweight design offsets the unidirectional inertia moment, reduces the bearing load, and extends the service life of the equipment. Moreover, when the counterweight box 908 rotates, the synergistic effect of the sliding plate 909, moving rod 911, linkage spring 912 and damping material arranged inside it can effectively absorb high-frequency vibration energy, greatly reduce the shaking of the forming roller 7 during vibration, enhance the impact resistance of the mechanical structure, and at the same time ensure that the vibration energy is concentrated on the material forming link, thereby improving the pressure transmission efficiency.

[0055] See also Figure 1-Figure 3 and Figure 5-Figure 6 , the tension adjustment assembly 8 includes two oppositely arranged mounting transverse plates 801, the mounting transverse plates 801 are connected to the bottom of the assembly box 12, one side of the mounting transverse plate 801 is rotatably connected to a rotating column 806, one end of the rotating column 806 is slidably connected to a sliding rod 807, the other end of the sliding rod 807 is connected to a connecting piece 809, a return spring 808 is sleeved on the outer surface of the sliding rod 807, the two ends of the return spring 808 are respectively connected to one side of the connecting piece 809 and one side of the rotating column 806, a steering frame 803 is hinged on one side of the connecting piece 809, and a first adjusting roller 802 and a second adjusting roller 804 are rotatably connected between the two steering frames 803, and the first adjusting roller 802 and the second adjusting roller 804 are arranged below the forming roller 7;

[0056] Among them, one side of the mounting horizontal plate 801 is rotatably connected to an electric push rod 805, and the other end of the electric push rod 805 is hinged to one side of the rotating column 806, and the cross-section of the steering frame 803 is V-shaped;

[0057] Specifically, the unwinding device 10 unwinds the substrate, allowing the substrate to pass between the forming roller 7 and the first adjustment roller 802 and the second adjustment roller 804. After the raw material is formed by the forming roller 7, it is pressed together with the substrate under the guidance of the first adjustment roller 802 and the second adjustment roller 804. During this process, the electric push rod 805 drives the rotating column 806 to deflect, and the rotating column 806 drives the sliding rod 807, the connecting piece 809 and the steering frame 803 to move. The steering frame 803 drives the first adjustment roller 802 and the second adjustment roller 804 to change position, and cooperates with the reset spring 808 to adjust the pressure on the substrate and the raw material film. At the same time, by changing the positional relationship between the first adjustment roller 802 and the second adjustment roller 804 and the forming roller 7, the tension on the substrate is adjusted to ensure that the substrate is always kept taut and wrinkles on the substrate are avoided, thereby ensuring the flatness of the pressed raw material film and the substrate, and improving the quality of the finished product.

[0058] See also Figures 1-4 and Figure 11-12 The heating assembly 6 includes an inner cylinder 607 arranged inside the embossing roller 3, both ends of the inner cylinder 607 are connected to the inner wall of the embossing roller 3, a plurality of through holes 608 distributed in a circumferential array are opened on the outer circumference of the inner cylinder 607, both sides of the outer surface of the inner cylinder 607 are rotatably connected to the inner gear ring 613, a plurality of turbulent blades 609 distributed in a circumferential array are connected between the two inner gear rings 613, and a plurality of connecting pipes 606 distributed in a circumferential array are connected to both sides of the embossing roller 3, and the other ends of the plurality of connecting pipes 606 are connected to the rotating air ring 605, and the outer circumference of the rotating air ring 605 is rotatably connected to the fixed air ring 604, one side of the fixed air ring 604 is connected to one side of the driving member 11, and the rotating air ring 605 is connected to the fixed air ring 604;

[0059] Among them, the bottom of the fixed air ring 604 is connected to the return air pipe 603, and both sides of the sizing roller 3 are connected to the hollow shaft, the hollow shaft is transmission-connected to the driving member 11, one end of the hollow shaft is rotatably connected to the delivery pipe 602, the delivery pipe 602 is connected to the hollow shaft, the other end of the return air pipe 603 and the delivery pipe 602 are both connected to the same thermal cycle device 601, and the connecting pipe 606 is arranged between the sizing roller 3 and the inner cylinder 607;

[0060] One side of the driving member 11 is connected to an outer gear ring 610, and both sides of the outer gear ring 610 are meshed with outer gears 611. One side of the outer gear 611 is connected to a transmission shaft, which is rotatably connected to the embossing roller 3. The other end of the transmission shaft extends into the interior of the embossing roller 3 and is connected to an inner gear 612. One side of the inner gear 612 is meshed with an inner gear ring 613.

[0061] Specifically, when the fine pressing roller 3 is precisely pressing the raw material film and the substrate, the heat circulation device 601 conveys hot air into the hollow shaft through the conveying pipe 602, and the hot air passes through the hollow shaft and enters the inner cylinder 607. Since hot air enters both ends of the inner cylinder 607, counter-flow is formed, so that the hot air enters the cavity between the inner cylinder 607 and the fine pressing roller 3 through the through hole 608. After that, the hot air is conveyed to the rotating air ring 605 through the connecting pipe 606. The hot air in the rotating air ring 605 is returned to the return pipe 603 through the fixed air ring 604. The hot air is transported so as to re-enter the heat circulation device 601, thereby heating the embossing roller 3, thereby accelerating the bonding and forming between the diaphragm and the substrate. During this process, the embossing roller 3 drives the outer gear 611 to rotate, so that the outer gear 611 revolves on the outer gear ring 610, so that the outer gear 611 rotates on itself, and the outer gear 611 drives the inner gear 612 to rotate, and the inner gear 612 drives the inner gear ring 613 to rotate, and the inner gear ring 613 drives the spoiler blades 609 to rotate, so that the hot air can be evenly dispersed in the embossing roller 3.

[0062] See also Figure 1-Figure 3 , a main platform 1 is provided on the top of the two assembly boxes 12, a support frame 5 is connected to the bottom of the main platform 1, a finished product winding device 2 is provided on the top of the main platform 1, a feeding device 4 is provided on the top of the two forming rollers 7, and an unwinding device 10 is provided on both sides of the two assembly boxes 12;

[0063] Specifically, the unwinding device 10 is used to unwind the substrate in an orderly manner to achieve orderly and continuous feeding of the substrate, and the feeding device 4 is used to adjust the amount of raw material fed and the size of the finished film.

[0064] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dry electrode forming device with a stepped roller structure, comprising two assembly boxes (12) arranged opposite to each other, characterized in that: A driving member (11) is provided in the assembly box (12), and a plurality of fine pressing rollers (3) and two oppositely arranged forming rollers (7) are provided between two oppositely arranged driving members (11), a heating component (6) is provided in the fine pressing roller (3), a compacting component (9) is provided in the forming roller (7), and a tension adjustment component (8) is provided below the two forming rollers (7); The tamping assembly (9) comprises two relatively arranged connecting frames (904), one side of the connecting frame (904) is connected to a connecting shaft (902), the connecting shaft (902) is fixedly connected to the connecting frame (904), a first rotating rod (905) and a second rotating rod (906) are rotatably connected between the two relatively arranged connecting frames (904), the first rotating rod (905) and the second rotating rod (906) rotate in opposite directions, the outer surfaces of the first rotating rod (905) and the second rotating rod (906) are connected to a plurality of fixing members (907) distributed in a linear array, one end of the fixing member (907) is connected to a counterweight box (908), and during the relative rotation of the two forming rollers (7), the first rotating rod (905) and the second rotating rod (906) drive the two sets of counterweight boxes (908) to rotate in opposite directions, thereby enabling the forming rollers (7) to vibrate relative to each other; One end of the connecting shaft (902) extends to the outside of the forming roller (7) and is in transmission connection with the driving member (11); one side of the driving member (11) is connected to a fixed gear ring (901); the inner side of the fixed gear ring (901) is meshed with two symmetrically arranged transmission gears (903); Both ends of the second rotating rod (906) extend to the other side of the connecting frame (904) and are connected to the first bevel gear (913); one side of the first bevel gear (913) is meshedly connected to the third bevel gear (915); one side of the third bevel gear (915) is meshedly connected to the second bevel gear (914); one side of the third bevel gear (915) is rotationally connected to one side of the connecting shaft (902); one side of the second bevel gear (914) is rotationally connected to one side of the inner wall of the forming roller (7) via the rotating shaft; the first rotating rod (905) and one end of the rotating shaft extend to the outside of the forming roller (7) and are connected to one side of the transmission gear (903).

2. The dry electrode forming device with a stepped roller structure according to claim 1, characterized in that: The counterweight box (908) is connected to a mounting rod (910), and two symmetrically arranged moving rods (911) are slidably connected to the mounting rod (910). One end of the two moving rods (911) is connected to the same sliding plate (909), and the sliding plate (909) is in contact with the mounting rod (910). One end of the moving rod (911) away from the sliding plate (909) is connected to a limit plate. A linkage spring (912) is sleeved on the outer surface of the moving rod (911), and the two ends of the linkage spring (912) are respectively connected to the mounting rod (910) and one side of the limit plate. Damping material is filled between the sliding plate (909) and the counterweight box (908).

3. The dry electrode forming device with a stepped roller structure according to claim 1, characterized in that: The tension adjustment assembly (8) comprises two oppositely arranged mounting transverse plates (801), wherein the mounting transverse plates (801) are connected to the bottom of the assembly box (12), one side of the mounting transverse plate (801) is rotatably connected to a rotating column (806), one end of the rotating column (806) is slidably connected to a sliding rod (807), the other end of the sliding rod (807) is connected to a connecting member (809), a return spring (808) is sleeved on the outer surface of the sliding rod (807), the two ends of the return spring (808) are respectively connected to one side of the connecting member (809) and one side of the rotating column (806), one side of the connecting member (809) is hinged with a direction adjustment frame (803), a first adjustment roller (802) and a second adjustment roller (804) are rotatably connected between the two direction adjustment frames (803), and the first adjustment roller (802) and the second adjustment roller (804) are arranged below the forming roller (7).

4. The dry electrode forming device with a stepped roller structure according to claim 3, characterized in that: One side of the mounting horizontal plate (801) is rotatably connected to an electric push rod (805), and the other end of the electric push rod (805) is hinged to one side of a rotating column (806). The cross-section of the steering frame (803) is V-shaped.

5. The dry electrode forming device with a stepped roller structure according to claim 1, characterized in that: The heating assembly (6) includes an inner cylinder (607) arranged inside the fine pressing roller (3), both ends of the inner cylinder (607) are connected to the inner wall of the fine pressing roller (3), a plurality of through holes (608) distributed in a circumferential array are opened on the outer circumference of the inner cylinder (607), both sides of the outer surface of the inner cylinder (607) are rotatably connected to inner gear rings (613), a plurality of turbulent blades (609) distributed in a circumferential array are connected between the two inner gear rings (613), both sides of the fine pressing roller (3) are connected to a plurality of connecting pipes (606) distributed in a circumferential array, the other ends of the plurality of connecting pipes (606) are connected to a rotating air ring (605), the outer circumference of the rotating air ring (605) is rotatably connected to a fixed air ring (604), one side of the fixed air ring (604) is connected to one side of the driving member (11), and the rotating air ring (605) is connected to the fixed air ring (604).

6. The dry electrode forming device with a stepped roller structure according to claim 5, characterized in that: The bottom of the fixed air ring (604) is connected to a return air pipe (603), and both sides of the fine pressing roller (3) are connected to a hollow shaft, and the hollow shaft is connected to the driving member (11) in a transmission manner. One end of the hollow shaft is rotatably connected to a delivery pipe (602), and the delivery pipe (602) is connected to the hollow shaft. The other ends of the return air pipe (603) and the delivery pipe (602) are both connected to the same heat circulation device (601), and the connecting pipe (606) is arranged between the fine pressing roller (3) and the inner cylinder (607).

7. The dry electrode forming device with a stepped roller structure according to claim 5, characterized in that: One side of the driving member (11) is connected to an outer gear ring (610), and both sides of the outer gear ring (610) are meshedly connected to outer gears (611). One side of the outer gear (611) is connected to a transmission shaft, and the transmission shaft is rotationally connected to the fine-pressing roller (3). The other end of the transmission shaft extends into the interior of the fine-pressing roller (3) and is connected to an inner gear (612), and one side of the inner gear (612) is meshedly connected to the inner gear ring (613).

8. The dry electrode forming device with a stepped roller structure according to claim 1, characterized in that: A main platform (1) is provided on the top of the two assembly boxes (12), a support frame (5) is connected to the bottom of the main platform (1), a finished product winding device (2) is provided on the top of the main platform (1), a feeding device (4) is provided on the top of the two forming rollers (7), and an unwinding device (10) is provided on both sides of the two assembly boxes (12).

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