Pole piece rolling mill

Abstract

The utility model discloses a pole piece rolling mill which comprises two bases which are oppositely arranged front and back, an upper roller, a lower roller, an upper roller driving mechanism and a lower roller driving mechanism, the upper roller and the lower roller are oppositely arranged up and down, and a gap is formed between the roller surface of the upper roller and the roller surface of the lower roller. The two ends of the upper roller are rotatably arranged on two upper supports respectively, the two upper supports are movably arranged in the two bases respectively, and the two ends of the lower roller are rotatably arranged on two lower supports respectively. The two lower supports are movably arranged in the two bases correspondingly and located below the two upper supports correspondingly. The device further comprises two upper supporting rollers arranged in a bilateral symmetry mode, two lower supporting rollers arranged in a bilateral symmetry mode, an upper gap adjusting driving mechanism and a lower gap adjusting driving mechanism. According to the utility model, the quality of the pole piece is improved, meanwhile, the device can be suitable for thinning dry-method diaphragms with different thicknesses and sizes, the application range is wide, and the use requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a pole piece rolling mill. Background Art

[0002] The current production process of dry-process electrodes generally includes the preparation process of dry-process membranes, the thinning process of dry-process membranes, and the composite process of dry-process membranes and current collectors. Among them, the thinning process of dry-process membranes is generally completed using an electrode rolling mill.

[0003] Existing electrode sheet rolling mills generally include two bases arranged in a front-to-rear relationship, upper rollers mounted on the two bases, lower rollers mounted on the two bases, an upper roller drive mechanism for driving the upper rollers, and a lower roller drive mechanism for driving the lower rollers. The upper and lower rollers are arranged in a vertically opposed relationship, with a gap between the upper and lower roller surfaces. In actual use, the upper roller is driven by the upper roller drive mechanism, and the lower roller is driven by the lower roller drive mechanism in a direction opposite to the rotation of the upper roller. After the dry film enters the gap, the rotating upper and lower rollers can roll the dry film, thereby thinning the dry film. During the rolling process of the dry-process membrane by the upper and lower rollers, the upper roller typically undergoes elastic deformation, bending upward, and the lower roller typically undergoes elastic deformation, bending downward, due to the rolling force. This results in uneven rolling pressure, making the thickness of the dry-process membrane uneven after thinning. The consistency of the electrode obtained after the dry-process membrane and the current collector are relatively poor, affecting the quality of the electrode. At the same time, the electrode rolling mill with this structure cannot adjust the width of the gap between the roller surfaces of the upper and lower rollers, and cannot adapt to the thinning of dry-process membranes of different thicknesses. It has a narrow scope of application and cannot meet the needs of use. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a pole piece rolling mill, which improves the quality of pole pieces and can adapt to the thinning of dry-process diaphragms of different thicknesses and sizes. It has a wide range of applications and meets usage requirements.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The two wheels are connected to each other and the two rollers are connected, and the two wheels are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the two rollers are connected, and the The two lower support rollers are respectively rotatably arranged on the two lower supports, and the two lower support rollers are respectively located below the two lower support rollers, and the roll surfaces of the two lower support rollers are respectively tightly attached to the roll surfaces of the two lower rollers. The two ends of the lower support rollers are respectively rotatably arranged on the two lower supports. The upper gap adjustment driving mechanism is arranged on the two bases and connected to the two upper supports. The lower gap adjustment driving mechanism is arranged on the two bases and connected to the two lower supports. The upper gap adjustment driving mechanism is used to drive the two upper supports to move downward or upward, and the lower gap adjustment driving mechanism is used to synchronously drive the two lower supports to move upward or downward.

[0007] As a preferred technical solution, the upper gap adjustment drive mechanism includes two upper adjustment drives, which are respectively arranged at the top of the two bases, and the output ends of the two upper adjustment drives are respectively connected to the top ends of the two upper supports, and the two upper adjustment drives are respectively used to drive the two upper supports to move downward or upward; the lower gap adjustment drive mechanism includes two lower adjustment drives, which are respectively arranged at the bottom of the two bases, and the output ends of the two lower adjustment drives are respectively connected to the bottom ends of the two lower supports, and the two lower adjustment drives are respectively used to synchronously drive the two lower supports to move upward or downward.

[0008] As a preferred technical solution, the two upper adjustment driving members are respectively detachably arranged at the top of the two bases, and the two lower adjustment driving members are respectively detachably arranged at the bottom of the two bases.

[0009] As a preferred technical solution, the upper adjustment drive member and the lower adjustment drive member are both an oil cylinder or an electric cylinder.

[0010] As a preferred technical solution, the upper roller drive mechanism includes an upper drive motor and an upper reducer, the upper reducer is arranged on the outside of one of the bases, the upper drive motor is arranged on the upper reducer, the output end of the upper drive motor is connected to the input end of the upper reducer, and the output end of the upper reducer is connected to one end of the upper roller through an upper coupling; the lower roller drive mechanism includes a lower drive motor and a lower reducer, the lower reducer is arranged on the outside of one of the bases, the lower drive motor is arranged on the lower reducer, the output end of the lower drive motor is connected to the input end of the lower reducer, and the output end of the lower reducer is connected to one end of the lower roller through a lower coupling.

[0011] As a preferred technical solution, the upper support roller includes an upper shaft core and multiple upper backing bearings, the two ends of the upper shaft core are rotatably arranged on the two upper supports, the multiple upper backing bearings are respectively sleeved on the outer circumference of the upper shaft core, the multiple upper backing bearings are respectively distributed at intervals along the axial direction of the upper shaft core, and the outer peripheral surfaces of the multiple upper backing bearings form the roller surface of the upper support roller; the lower support roller includes a lower shaft core and multiple lower backing bearings, the two ends of the lower shaft core are respectively rotatably arranged on the two lower supports, the multiple lower backing bearings are respectively sleeved on the outer circumference of the lower shaft core, the multiple lower backing bearings are respectively distributed at intervals along the axial direction of the lower shaft core, and the outer peripheral surfaces of the multiple lower backing bearings form the roller surface of the lower support roller.

[0012] As a preferred technical solution, the pole piece rolling mill also includes an upper support driving mechanism, which includes multiple upper support driving members and multiple upper racks. An upper connecting seat is detachably arranged between the two upper supports, and the upper connecting seat is located above the two upper support rollers. Multiple upper support driving members are respectively arranged at the top end of the upper connecting seat, and the upper connecting seat is provided with multiple upper through holes passing through the top and bottom ends thereof. Multiple upper racks are respectively located between the two upper support rollers, and the top ends of the multiple upper racks are respectively extended into the multiple upper through holes, and the output ends of the multiple upper support driving members are respectively extended into the multiple upper through holes and are respectively connected to the top ends of the multiple upper racks. The upper support roller also includes a plurality of upper eccentric saddles, each of which has an upper eccentric hole. The plurality of upper eccentric saddles are respectively sleeved on the outer periphery of the upper shaft core through their respective upper eccentric holes. The plurality of upper eccentric saddles and the plurality of upper backing bearings are alternately distributed along the axial direction of the upper shaft core. The plurality of upper racks respectively correspond to the plurality of upper eccentric saddles. A first upper tooth portion and a second upper tooth portion are respectively provided on both sides of the upper rack. The upper eccentric saddle is provided with a first saddle tooth portion. The first saddle teeth of the plurality of upper eccentric saddles of one upper support roller are respectively meshed with the first upper tooth portion of the corresponding upper rack, and the first saddle teeth of the plurality of upper eccentric saddles of the other upper support roller are respectively meshed with the second upper tooth portion of the corresponding upper rack.

[0013] As a preferred technical solution, the bottom end of the upper connecting seat is provided with two upper arc-shaped grooves corresponding to the two upper support rollers respectively, and the upper eccentric saddle is provided with a first arc-shaped block, and the outer peripheral surfaces of the first arc-shaped blocks of the multiple upper eccentric saddles of the upper support roller are all matched with the bottoms of the corresponding upper arc-shaped grooves.

[0014] As a preferred technical solution, the pole piece rolling mill also includes a lower support driving mechanism, the lower support driving mechanism includes multiple lower support driving members and multiple lower racks, a lower connecting seat is detachably provided between the two lower supports, the lower connecting seat is located below the two lower support rollers, multiple lower support driving members are respectively arranged at the bottom ends of the lower connecting seat, the lower connecting seat is provided with multiple lower through holes passing through the top and bottom ends thereof, multiple lower racks are respectively located between the two lower support rollers, and the bottom ends of multiple lower racks are respectively extended into the multiple lower through holes, the output ends of multiple lower support driving members are respectively extended into the multiple lower through holes and are respectively connected to the bottom ends of multiple lower racks, The lower support roller also includes a plurality of lower eccentric saddles, each of which has a lower eccentric hole. The plurality of lower eccentric saddles are respectively sleeved on the outer periphery of the lower shaft core through their respective lower eccentric holes. The plurality of lower eccentric saddles and the plurality of lower backing bearings are alternately distributed along the axial direction of the lower shaft core. The plurality of lower racks respectively correspond to the plurality of lower eccentric saddles. A first lower tooth portion and a second lower tooth portion are respectively provided on both sides of the lower rack. The lower eccentric saddle is provided with a second saddle tooth portion. The second saddle teeth of the plurality of lower eccentric saddles of one lower support roller are respectively meshed with the first lower tooth portion of the corresponding lower rack, and the second saddle teeth of the plurality of lower eccentric saddles of another lower support roller are respectively meshed with the second lower tooth portion of the corresponding lower rack.

[0015] As an optimal technical solution, the top of the lower connecting seat is provided with two lower arc-shaped grooves corresponding to the two lower support rollers respectively, and the lower eccentric saddle is provided with a second arc-shaped block, and the outer peripheral surfaces of the second arc-shaped blocks of the multiple lower eccentric saddles of the lower support roller are all matched with the bottoms of the corresponding lower arc-shaped grooves.

[0016] The beneficial effects of the present invention are as follows: the present invention can achieve multi-point support for the upper roller by means of two upper support rollers arranged symmetrically on the left and right, and can achieve multi-point support for the lower roller by means of two lower support rollers arranged symmetrically on the left and right, thereby eliminating elastic deformation of the upper and lower rollers, ensuring uniformity of rolling pressure, making the thickness of the dry-process diaphragm uniform after thinning, and improving the consistency of the electrode sheet, thereby improving the quality of the electrode sheet. At the same time, the width of the gap between the roller surface of the upper roller and the roller surface of the lower roller can be adjusted by means of the upper gap adjustment drive mechanism and the lower gap adjustment drive mechanism, thereby adapting to the thinning of dry-process diaphragms of different thicknesses, having a wide range of applications, reducing production costs, and meeting usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a structural diagram of a pole piece rolling mill provided by one embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 A schematic cross-sectional view of a pole piece rolling mill is shown;

[0020] Figure 3 yes Figure 1 A schematic structural diagram of two upper support rollers, an upper connecting seat and an upper support drive mechanism of a pole piece rolling mill is shown;

[0021] Figure 4 yes Figure 3 A schematic structural diagram of the upper connecting seat shown;

[0022] Figure 5 yes Figure 3 A schematic structural diagram of two support rollers and multiple upper racks shown;

[0023] Figure 6 yes Figure 3 The structural schematic diagram of the upper support roller shown;

[0024] Figure 7 yes Figure 3 An exploded schematic diagram of the upper support roller shown;

[0025] Figure 8 yes Figure 1 A schematic structural diagram of the two lower support rollers, the lower connecting seat and the lower support drive mechanism of the pole piece rolling mill;

[0026] Figure 9 yes Figure 8 The structural diagram of the lower connecting seat is shown;

[0027] Figure 10 yes Figure 8 A schematic structural diagram of two lower support rollers and multiple lower racks is shown;

[0028] Figure 11 yes Figure 8 The structural diagram of the lower support roller is shown;

[0029] Figure 12 yes Figure 8 Exploded view of the lower support roller shown. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0031] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a pole piece rolling mill, comprising two bases 10 arranged opposite to each other in front and back, an upper rolling roller 20, a lower rolling roller 30, two upper support rollers 40 arranged symmetrically on the left and right, two lower support rollers 50 arranged symmetrically on the left and right, an upper rolling roller driving mechanism (not shown in the figure) for driving the upper rolling roller 20 to rotate, a lower rolling roller driving mechanism (not shown in the figure) for driving the lower rolling roller 30 to rotate, an upper gap adjustment driving mechanism 60, a lower gap adjustment driving mechanism 70, an upper support driving mechanism and a lower support driving mechanism.

[0032] The upper roller 20 and the lower roller 30 are arranged in a vertically opposed relationship, with a gap between the roller surfaces of the upper roller 20 and the lower roller 30. The ends of the upper roller 20 are rotatably mounted on the two upper supports 11. Specifically, the upper supports 11 are provided with first mounting holes 111, and the ends of the upper roller 20 are respectively installed through the first mounting holes 111 of the two upper supports 11. Two upper bearing seats (not shown) are respectively sleeved on the outer periphery of the two ends of the upper roller 20. The two upper bearing seats are respectively located in the first mounting holes 111 of the two upper supports 11. The two upper bearing seats are respectively installed on the outer sides of the two upper supports 11 using fasteners such as screws. The two upper bearing seats can provide rotational support for the upper roller 20. The two upper supports 11 are movably mounted in the two bases 10. The lower roller 30 has its ends rotatably mounted on the two lower supports 12. Specifically, the lower supports 12 are provided with second mounting holes 121. The ends of the lower roller 30 extend through the second mounting holes 121 of the two lower supports 12. Two lower bearing seats (not shown) are sleeved around the outer periphery of the two ends of the lower roller 30. The two lower bearing seats are partially positioned within the second mounting holes 121 of the two lower supports 12. The two lower bearing seats are mounted on the outer sides of the two lower supports 12 using fasteners such as screws. These two lower bearing seats provide rotational support for the lower roller 30. The two lower supports 12 are movably mounted within the two bases 10 and positioned below the two upper supports 11. Both the upper and lower bearing seats are, for example, round flange bushing-type bearing seats.

[0033] The two upper support rollers 40 are located above the upper roll 20. Their surfaces are in close contact with the surface of the upper roll 20, providing multi-point support to the upper roll 20. The ends of the upper support rollers 40 are rotatably mounted on the two upper supports 11. The two lower support rollers 50 are located below the lower roll 30. Their surfaces are in close contact with the surface of the lower roll 30, providing multi-point support to the lower roll 30. The ends of the lower support rollers 50 are rotatably mounted on the two lower supports 12.

[0034] In this embodiment, the upper roller 20 and the lower roller 30 have identical structures. The diameter of the upper roller 20 is the same as that of the lower roller 30. The diameter of the upper support roller 40 is smaller than that of the upper roller 20 and is the same as that of the lower support roller 50. Because dry-process film is relatively soft, only the upper support roller 40 with a small diameter is required to support the upper roller 20, and the lower support roller 50 with a small diameter is required to support the lower roller 30, thereby reducing production costs.

[0035] The upper roller drive mechanism includes an upper drive motor and an upper reducer. The upper reducer is mounted on the outer side of one of the bases 10, for example, the front base 10, via an upper reducer mount. The upper drive motor is mounted on the upper reducer, with its output connected to the input of the upper reducer. The output of the upper reducer is then connected to one end of the upper roller 20 via an upper coupling. The upper drive motor drives the upper roller 20 through the upper reducer.

[0036] The lower roller drive mechanism includes a lower drive motor and a lower reducer. The lower reducer is mounted on the outside of one of the bases 10, for example, the front base 10, via a lower reducer mount. The lower drive motor is mounted on the lower reducer, with its output connected to the input of the lower reducer. The output of the lower reducer is then connected to one end of the lower roller 30 via a lower coupling. The lower drive motor drives the lower roller 30 through the lower reducer. In practice, the upper roller 20 and lower roller 30 rotate in opposite directions.

[0037] An upper gap adjustment drive mechanism 60 is disposed on the two bases 10 and connected to the two upper supports 11. A lower gap adjustment drive mechanism 70 is disposed on the two bases 10 and connected to the two lower supports 12. The upper gap adjustment drive mechanism 60 is used to drive the two upper supports 11 downward or upward, thereby driving the two upper support rollers 40 and the upper rolling roller 20 downward or upward. The lower gap adjustment drive mechanism 70 is used to synchronously drive the two lower supports 12 upward or downward, thereby driving the two lower support rollers 50 and the lower rolling roller 30 upward or downward. The upper gap adjustment drive mechanism 60 and the lower gap adjustment drive mechanism 70 can adjust the width of the gap between the roller surfaces of the upper rolling roller 20 and the lower rolling roller 30, thereby accommodating the thinning of dry-process membranes of varying thicknesses and having a wide range of applications. Specifically, when the width of the gap between the roll surface of the upper roller 20 and the roll surface of the lower roller 30 needs to be reduced, the upper gap adjustment drive mechanism 60 drives the upper roller 20 downward, and the lower gap adjustment drive mechanism 70 synchronously drives the lower roller 30 upward, thereby reducing the width of the gap between the roll surface of the upper roller 20 and the roll surface of the lower roller 30. When the width of the gap between the roll surface of the upper roller 20 and the roll surface of the lower roller 30 needs to be increased, the upper gap adjustment drive mechanism 60 drives the upper roller 20 upward, and the lower gap adjustment drive mechanism 70 synchronously drives the lower roller 30 downward, thereby increasing the width of the gap between the roll surface of the upper roller 20 and the roll surface of the lower roller 30.

[0038] In this embodiment, the upper gap adjustment drive mechanism 60 includes two upper adjustment drive members 61, which are respectively disposed at the top of the two bases 10. The output ends of the two upper adjustment drive members 61 are respectively connected to the top ends of the two upper supports 11. The two upper adjustment drive members 61 are respectively used to drive the two upper supports 11 to move downward or upward. The lower gap adjustment drive mechanism 70 includes two lower adjustment drive members 71, which are respectively disposed at the bottom of the two bases 10. The output ends of the two lower adjustment drive members 71 are respectively connected to the bottom ends of the two lower supports 12. The two lower adjustment drive members 71 are respectively used to synchronously drive the two lower supports 12 to move upward or downward.

[0039] The upper adjusting driving member 61 and the lower adjusting driving member 71 are both oil cylinders. It can be understood that the upper adjusting driving member 61 and the lower adjusting driving member 71 can also be, for example, both electric cylinders.

[0040] The two upper adjustment drive members 61 are detachably mounted on the top of the two bases 10, making assembly and disassembly easy. Specifically, the upper adjustment drive members 61 are mounted on the bottom end of an upper mounting plate 62. The upper mounting plate 62 is provided with a first mounting hole. The top of the base 10 is provided with a second mounting hole corresponding to the first mounting hole. First fasteners, such as screws, are mounted in the first mounting hole and the second mounting hole. By disassembling and assembling the first fasteners, the two upper adjustment drive members 61 can be removed from the two bases 10 or mounted on the two bases 10. The number of the first mounting hole and the second mounting hole can be set according to actual conditions. The two lower adjustment drive members 71 are detachably mounted on the bottoms of the two bases 10, making assembly and disassembly easy. Specifically, the lower adjustment drive members 71 are mounted on the top of a lower mounting plate 72, which has a third mounting hole. The bottom of the base 10 has a fourth mounting hole corresponding to the third mounting hole. Second fasteners, such as screws, are mounted in the third and fourth mounting holes. By disassembling and assembling the second fasteners, the two lower adjustment drive members 71 can be removed from the two bases 10 or mounted to the two bases 10. The number of third and fourth mounting holes can be set according to actual conditions.

[0041] In this embodiment, two first slides are provided at each end of the upper support 11, and the length direction of the first slide is the same as the height direction of the upper support 11. Two second slides are provided at each end of the lower support 12, and the length direction of the second slide is the same as the height direction of the lower support 12. Two base slides are provided on the inner walls of each end of the base 10, and the length direction of the base slide is the same as the height direction of the base 10. The two first slides and the two second slides are respectively slidably matched with the two base slides. The two first slides, the two second slides, and the two base slides can provide support for the up and down movement of the two upper supports 11 and the two lower supports 12, thereby improving the stability of the movement of the two upper supports 11 and the two lower supports 12.

[0042] Combine Figures 3 to 7 As shown, in this embodiment, the upper support roller 40 includes an upper shaft core 41 and multiple upper backing bearings 42. The upper shaft core 41 is rotatably mounted on two upper supports 11 at both ends. Specifically, the upper supports 11 are provided with first through-holes 112 corresponding to the upper support rollers 40. The upper shaft core 41 extends through the first through-holes 112 of the two upper supports 11 at both ends. Two upper shaft core bearing seats (not shown) are sleeved around the outer periphery of the upper shaft core 41 at both ends. Portions of the two upper shaft core bearing seats are located within the first through-holes 112 of the two upper supports 11. The two upper shaft core bearing seats are secured to the outer sides of the two upper supports 11 via fasteners such as screws. Multiple upper backing bearings 42 are sleeved around the outer periphery of the upper shaft core 41. The multiple upper backing bearings 42 are spaced apart along the axial direction of the upper shaft core 41. The outer circumferential surfaces of the multiple upper backing bearings 42 form the roller surface of the upper support roller 40. The number of upper backing bearings 42 can be adjusted based on actual needs.

[0043] The upper support drive mechanism includes a plurality of upper support drive members (not shown in the figure) and a plurality of upper racks 81 corresponding to the plurality of upper support drive members. An upper connecting seat 13 is detachably provided between the two upper supports 11, which is convenient for assembly and disassembly. Specifically, a first upper hole is provided at each end of the upper connecting seat 13, and the upper support 11 is provided with a second upper hole corresponding to the first upper hole. Upper fasteners such as screws are installed in the second upper hole and the first upper hole. By disassembling and assembling the upper fasteners, the upper connecting seat 13 can be assembled and disassembled. The number of the second upper hole and the first upper hole can be set according to actual conditions. The upper connecting seat 13 is located above the two upper support rollers 40, and the plurality of upper support drive members are respectively provided at the top of the upper connecting seat 13. The upper connecting seat 13 is provided with a plurality of upper through holes 131 passing through its top and bottom ends, and the plurality of upper support drive members and the plurality of upper racks 81 correspond to the plurality of upper through holes 131, respectively. Multiple upper racks 81 are positioned between the two upper support rollers 40, with the top ends of the multiple upper racks 81 extending into the multiple upper through-holes 131. The output ends of the multiple upper support drive members extend into the multiple upper through-holes 131 and connect to the top ends of the multiple upper racks 81. The upper support roller 40 also includes multiple upper eccentric saddles 43, each having an upper eccentric hole 431. The multiple upper eccentric saddles 43 are sleeved onto the outer circumference of the upper shaft core 41 through their respective upper eccentric holes 431. The number of upper eccentric saddles 43 corresponds to the number of upper backing bearings 42. The multiple upper eccentric saddles 43 and the multiple upper backing bearings 42 are alternately distributed along the axial direction of the upper shaft core 41 from back to front. The multiple upper racks 81 correspond to the multiple upper eccentric saddles 43. A first upper tooth portion 811 and a second upper tooth portion 812 are respectively provided on both sides of the upper rack 81, and the upper eccentric saddle 43 is provided with a first saddle tooth portion 432. The first saddle tooth portion 432 is close to the corresponding upper rack 81. The first saddle tooth portion 432 of the multiple upper eccentric saddles 43 of one of the upper support rollers 40, such as the upper support roller 40 located on the left, are respectively engaged with the first upper tooth portion 811 of the corresponding upper rack 81, and the first saddle tooth portion 432 of the multiple upper eccentric saddles 43 of the other upper support roller 40, such as the upper support roller 40 located on the right, are respectively engaged with the second upper tooth portion 812 of the corresponding upper rack 81.The plurality of upper support driving members are respectively used to drive the plurality of upper racks 81 to move up and down, so that the plurality of upper eccentric saddles 43 of one of the upper support rollers 40 can be driven to rotate counterclockwise or clockwise through the first upper tooth portion 811 and the corresponding first saddle tooth portion 432 of one of the upper support rollers 40, and the plurality of upper eccentric saddles 43 of the other upper support roller 40 can be driven to rotate synchronously in the clockwise direction or counterclockwise direction through the second upper tooth portion 812 and the corresponding first saddle tooth portion 432 of the other upper support roller 40, that is, the plurality of upper eccentric saddles 43 of one of the upper support rollers 40 and the plurality of upper eccentric saddles 43 of the other upper support roller 40 can be driven to rotate toward or away from each other, and under the eccentric drive of the plurality of upper eccentric saddles 43, the upper shaft core 41 of the corresponding upper support roller 40 can be slightly deformed in sections, so that the pressure of the roller surface of the upper support roller 40 on the roller surface of the upper rolling roller 20 can be adjusted in sections.

[0044] The up and down movement of the two upper supports 11 can drive the upper connecting seat 13 to move up and down, thereby driving the multiple upper supporting driving members and the multiple upper racks 81 to move up and down.

[0045] The bottom end of the upper connecting seat 13 is provided with two upper arc-shaped grooves 132 corresponding to the two upper support rollers 40, and the upper eccentric saddle 43 is provided with a first arc-shaped block 433. The outer circumference of the first arc-shaped block 433 of the multiple upper eccentric saddles 43 of the upper support roller 40 is matched with the bottom of the corresponding upper arc-shaped groove 132, and the first arc-shaped blocks 433 of the multiple upper eccentric saddles 43 are sequentially contacted. The rotation of the upper eccentric saddle 43 can drive the first arc-shaped block 433 to rotate along the bottom of the corresponding upper arc-shaped groove 132, thereby providing support for the rotation of the upper eccentric saddle 43.

[0046] Combine Figures 8 to 12 As shown, the lower support roller 50 includes a lower shaft core 51 and multiple lower backing bearings 52. The lower shaft core 51 is rotatably mounted on two lower supports 12 at both ends. Specifically, the lower supports 12 are provided with second through-holes 122 corresponding to the lower support roller 50. The lower shaft core 51 extends through the second through-holes 122 of the two lower supports 12 at both ends. Two lower shaft core bearing seats (not shown) are sleeved around the outer periphery of the lower shaft core 51. Portions of the two lower shaft core bearing seats are located within the second through-holes 122 of the two lower supports 12. The two lower shaft core bearing seats are secured to the outer sides of the two lower supports 12 via fasteners such as screws. Multiple lower backing bearings 52 are sleeved around the outer periphery of the lower shaft core 51. The multiple lower backing bearings 52 are spaced apart along the axial direction of the lower shaft core 51. The outer circumferential surfaces of the multiple lower backing bearings 52 form the roller surface of the lower support roller 50. The number of lower backing bearings 52 can be adjusted based on actual needs.

[0047] The lower support drive mechanism includes multiple lower support drive members (not shown) and multiple lower racks 91 corresponding to the multiple lower support drive members. A lower connecting seat 14 is detachably provided between the two lower supports 12, making assembly and disassembly convenient. Specifically, the lower connecting seat 14 has a first lower hole position at each end, and the lower support 12 has a second lower hole position corresponding to the first lower hole position. Lower fasteners such as screws are installed in the second lower hole position and the first lower hole position. By disassembling and assembling the lower fasteners, the lower connecting seat 14 can be assembled and disassembled. The number of second lower holes and first lower holes can be set according to actual conditions. The lower connecting seat 14 is located below the two lower support rollers 50, and the multiple lower support drive members are respectively provided at the bottom end of the lower connecting seat 14. The lower connecting seat 14 has multiple lower through holes 141 extending through the top and bottom ends thereof. The multiple lower support drive members and the multiple lower racks 91 correspond to the multiple lower through holes 141, respectively. Multiple lower racks 91 are positioned between the two lower support rollers 50, and the bottom ends of the multiple lower racks 91 extend into the multiple lower through-holes 141. The output ends of the multiple lower support drive members extend into the multiple lower through-holes 141 and are connected to the bottom ends of the multiple lower racks 91. The lower support roller 50 also includes multiple lower eccentric saddles 53, each having a lower eccentric hole 531. The multiple lower eccentric saddles 53 are respectively mounted on the outer circumference of the lower shaft core 51 through their respective lower eccentric holes 531. The number of lower eccentric saddles 53 corresponds to the number of lower backing bearings 52. The multiple lower eccentric saddles 53 and the multiple lower backing bearings 52 are alternately distributed along the axial direction of the lower shaft core 51 from back to front. The multiple lower racks 91 correspond to the multiple lower eccentric saddles 53. A first lower tooth portion 911 and a second lower tooth portion 912 are respectively provided on both sides of the lower rack 91, and the lower eccentric saddle 53 is provided with a second saddle tooth portion 532. The second saddle tooth portion 532 is close to the corresponding lower rack 91. The second saddle tooth portion 532 of the multiple lower eccentric saddles 53 of one of the lower support rollers 50, such as the lower support roller 50 located on the left, are respectively engaged with the first lower tooth portion 911 of the corresponding lower rack 91, and the second saddle tooth portion 532 of the multiple lower eccentric saddles 53 of the other lower support roller 50, such as the lower support roller 50 located on the right, are respectively engaged with the second lower tooth portion 912 of the corresponding lower rack 91.The multiple lower support driving members are respectively used to drive the multiple lower racks 91 to move up and down, so that the multiple lower eccentric saddles 53 of one of the lower support rollers 50 can be driven to rotate counterclockwise or clockwise through the first lower tooth portion 911 and the corresponding second saddle tooth portion 532 of one of the lower support rollers 50, and the multiple lower eccentric saddles 53 of the other lower support roller 50 can be driven to rotate synchronously in the clockwise direction or counterclockwise direction through the second lower tooth portion 912 and the corresponding second saddle tooth portion 532 of the other lower support roller 50, that is, the multiple lower eccentric saddles 53 of one of the lower support rollers 50 and the multiple lower eccentric saddles 53 of the other lower support roller 50 can be driven to rotate back to back or towards each other, and under the eccentric drive of the multiple lower eccentric saddles 53, the lower shaft core 51 of the corresponding lower support roller 50 can be slightly deformed in sections, so that the pressure of the roller surface of the lower support roller 50 on the roller surface of the lower rolling roller 30 can be adjusted in sections.

[0048] The up and down movement of the two lower supports 12 can drive the lower connecting seat 14 to move up and down, thereby driving the multiple lower support driving members and the multiple lower racks 91 to move up and down.

[0049] The top of the lower connecting seat 14 is provided with two lower arc-shaped grooves 142 corresponding to the two lower support rollers 50, and the lower eccentric saddle 53 is provided with a second arc-shaped block 533. The outer circumference of the second arc-shaped block 533 of the multiple lower eccentric saddles 53 of the lower support roller 50 is matched with the bottom of the corresponding lower arc-shaped groove 142, and the second arc-shaped blocks 533 of the multiple lower eccentric saddles 53 are sequentially contacted. The rotation of the lower eccentric saddle 53 can drive the second arc-shaped block 533 to rotate along the bottom of the corresponding lower arc-shaped groove 142, thereby providing support for the rotation of the lower eccentric saddle 53.

[0050] The upper support driving member and the lower support driving member are both hydraulic cylinders. It can be understood that the upper support driving member and the lower support driving member can also be, for example, a pneumatic cylinder, an electric cylinder, a voice coil motor, etc.

[0051] Through the above structure, in actual application, the upper roller 20 is first driven by the upper roller driving mechanism to rotate in the counterclockwise direction, and the lower roller 30 is driven by the lower roller driving mechanism to rotate in the clockwise direction. The two upper support rollers 40 can support the upper roller 20 respectively, and the two lower support rollers 50 can support the lower roller 30 respectively. After the dry film enters the gap between the roller surface of the upper roller 20 and the roller surface of the lower roller 30 from the left side of the pole piece rolling mill, the dry film can be rolled by the rotating upper roller 20 and the rotating lower roller 30, thereby achieving thinning of the dry film.

[0052] The present invention provides multi-point support for the upper roller 20 through two symmetrically arranged upper support rollers 40, and multi-point support for the lower roller 30 through two symmetrically arranged lower support rollers 50. This eliminates elastic deformation of the upper roller 20 and the lower roller 30, ensuring uniform rolling pressure. This ensures uniform thickness of the dry-process diaphragm after thinning, good consistency of the electrode sheet, and improved electrode sheet quality. Simultaneously, the upper gap adjustment drive mechanism 60 and the lower gap adjustment drive mechanism 70 are provided to adjust the width of the gap between the roller surface of the upper roller 20 and the roller surface of the lower roller 30. This adapts to the thinning of dry-process diaphragms of varying thicknesses, provides a wide range of applications, reduces production costs, and meets usage requirements.

[0053] When the upper roller 20 needs to be replaced, first remove the first fastener between the rear upper adjustment drive member 61 and the rear base 10 to separate the rear upper adjustment drive member 61 from the rear base 10. Then remove the upper fastener between the upper connecting seat 13 and the rear upper support 11. Then remove the upper coupling to separate the output end of the upper reducer from one end of the upper roller 20. Then remove the two upper bearing seats from the two upper supports 11 and the upper roller 20, and remove the two upper shaft core bearing seats from the two upper supports 11 and the corresponding upper support rollers 40. Then remove the rear upper support 11 from the upper roller 20, the two upper support rollers 40, and the rear base 10. Finally, remove the upper roller 20 from the two bases 10 and the front upper support 10. Next, place the new upper roller 20 below the two upper support rollers 40 and insert one end of the new upper roller 20 through the first mounting hole 111 of the front upper support 11. Then, assemble the rear upper support 11, the new upper roller 20, and the two upper support rollers 40. Then, install the two upper bearing blocks on the two upper supports 11 and the new upper roller 20, and the two upper shaft core bearing blocks on the two upper supports 11 and the corresponding upper support rollers 40. Then, attach the output end of the upper reducer to one end of the new upper roller 20 via the upper coupling. Then, reinstall the first fastener between the rear upper adjustment drive 61 and the rear base 10. Then, reinstall the upper fastener between the upper connecting base 13 and the rear upper support 11. This completes the replacement of the upper roller 20. The steps for replacing the lower roller 30 are identical to those for the upper roller 20 and will not be repeated here.

[0054] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pole piece rolling mill, comprising two bases arranged in a front-to-rear direction, an upper roller, a lower roller, an upper roller driving mechanism for driving the upper roller to rotate, and a lower roller driving mechanism for driving the lower roller to rotate, wherein the upper roller and the lower roller are arranged in a front-to-rear direction and a gap is formed between the roller surfaces of the upper roller and the lower roller, and characterized in that: The two ends of the upper roller are rotatably arranged on two upper supports, which are movably arranged in the two bases respectively; the two ends of the lower roller are rotatably arranged on two lower supports, which are movably arranged in the two bases and are respectively located below the two upper supports; The two lower supports are connected to each other with a plurality of support members, each support member is connected to the upper and lower supports of the two lower wheels, and the two support members are connected with each other with a plurality of support members.

2. The pole piece rolling mill according to claim 1, characterized in that: The upper gap adjustment driving mechanism includes two upper adjustment driving members, which are respectively arranged at the top of the two bases, and the output ends of the two upper adjustment driving members are respectively connected to the top ends of the two upper supports, and the two upper adjustment driving members are respectively used to drive the two upper supports to move downward or upward; the lower gap adjustment driving mechanism includes two lower adjustment driving members, which are respectively arranged at the bottom of the two bases, and the output ends of the two lower adjustment driving members are respectively connected to the bottom ends of the two lower supports, and the two lower adjustment driving members are respectively used to synchronously drive the two lower supports to move upward or downward.

3. The pole piece rolling mill according to claim 2, characterized in that: The two upper adjustment driving members are respectively detachably arranged at the top of the two bases, and the two lower adjustment driving members are respectively detachably arranged at the bottom of the two bases.

4. The pole piece rolling mill according to claim 2, characterized in that: The upper adjustment driving member and the lower adjustment driving member are both an oil cylinder or an electric cylinder.

5. The pole piece rolling mill according to claim 1, characterized in that: The upper roller driving mechanism includes an upper driving motor and an upper reducer, the upper reducer is arranged on the outside of one of the bases, the upper driving motor is arranged on the upper reducer, the output end of the upper driving motor is connected to the input end of the upper reducer, and the output end of the upper reducer is connected to one end of the upper roller through an upper coupling; the lower roller driving mechanism includes a lower driving motor and a lower reducer, the lower reducer is arranged on the outside of one of the bases, the lower driving motor is arranged on the lower reducer, the output end of the lower driving motor is connected to the input end of the lower reducer, and the output end of the lower reducer is connected to one end of the lower roller through a lower coupling.

6. The pole piece rolling mill according to claim 1, characterized in that: The upper support roller includes an upper shaft core and a plurality of upper backing bearings, and the two ends of the upper shaft core are rotatably arranged on the two upper supports respectively, and the plurality of upper backing bearings are respectively sleeved on the outer circumference of the upper shaft core, and the plurality of upper backing bearings are respectively distributed at intervals along the axial direction of the upper shaft core, and the outer peripheral surfaces of the plurality of upper backing bearings form the roller surface of the upper support roller; the lower support roller includes a lower shaft core and a plurality of lower backing bearings, and the two ends of the lower shaft core are respectively rotatably arranged on the two lower supports respectively, and the plurality of lower backing bearings are respectively sleeved on the outer circumference of the lower shaft core, and the plurality of lower backing bearings are respectively distributed at intervals along the axial direction of the lower shaft core, and the outer peripheral surfaces of the plurality of lower backing bearings form the roller surface of the lower support roller.

7. The pole piece rolling mill according to claim 6, characterized in that: The pole piece rolling mill also includes an upper support driving mechanism, the upper support driving mechanism includes a plurality of upper support driving members and a plurality of upper racks, an upper connecting seat is detachably provided between the two upper supports, the upper connecting seat is located above the two upper support rollers, the plurality of upper support driving members are respectively arranged at the top end of the upper connecting seat, the upper connecting seat is provided with a plurality of upper through holes passing through the top and bottom ends thereof, the plurality of upper racks are respectively located between the two upper support rollers, and the top ends of the plurality of upper racks are respectively extended into the plurality of upper through holes, the output ends of the plurality of upper support driving members are respectively extended into the plurality of upper through holes and are respectively connected to the top ends of the plurality of upper racks, the upper support The roller also includes a plurality of upper eccentric saddles, each of which has an upper eccentric hole. The plurality of upper eccentric saddles are respectively sleeved on the outer periphery of the upper shaft core through their respective upper eccentric holes. The plurality of upper eccentric saddles and the plurality of upper backing bearings are alternately distributed along the axial direction of the upper shaft core. The plurality of upper racks respectively correspond to the plurality of upper eccentric saddles. A first upper tooth portion and a second upper tooth portion are respectively provided on both sides of the upper rack. The upper eccentric saddle is provided with a first saddle tooth portion. The first saddle teeth of the plurality of upper eccentric saddles of one upper support roller are respectively meshed with the first upper tooth portion of the corresponding upper rack, and the first saddle teeth of the plurality of upper eccentric saddles of another upper support roller are respectively meshed with the second upper tooth portion of the corresponding upper rack.

8. The pole piece rolling mill according to claim 7, characterized in that: The bottom end of the upper connecting seat is provided with two upper arc-shaped grooves corresponding to the two upper support rollers respectively, and the upper eccentric saddle is provided with a first arc-shaped block. The outer peripheral surfaces of the first arc-shaped blocks of the multiple upper eccentric saddles of the upper support roller are matched with the bottoms of the corresponding upper arc-shaped grooves.

9. The pole piece rolling mill according to claim 6, characterized in that: The pole piece rolling mill also includes a lower support driving mechanism, the lower support driving mechanism includes a plurality of lower support driving members and a plurality of lower racks, a lower connecting seat is detachably provided between the two lower supports, the lower connecting seat is located below the two lower support rollers, the plurality of lower support driving members are respectively arranged at the bottom end of the lower connecting seat, the lower connecting seat is provided with a plurality of lower through holes penetrating the top and bottom ends thereof, the plurality of lower racks are respectively located between the two lower support rollers, and the bottom ends of the plurality of lower racks are respectively extended into the plurality of lower through holes, the output ends of the plurality of lower support driving members are respectively extended into the plurality of lower through holes and are respectively connected to the bottom ends of the plurality of lower racks, the lower support The roller also includes a plurality of lower eccentric saddles, each of which has a lower eccentric hole. The plurality of lower eccentric saddles are respectively sleeved on the outer periphery of the lower shaft core through their respective lower eccentric holes. The plurality of lower eccentric saddles and the plurality of lower backing bearings are alternately distributed along the axial direction of the lower shaft core. The plurality of lower racks respectively correspond to the plurality of lower eccentric saddles. A first lower tooth portion and a second lower tooth portion are respectively provided on both sides of the lower rack. The lower eccentric saddle is provided with a second saddle tooth portion. The second saddle teeth of the plurality of lower eccentric saddles of one lower supporting roller are respectively meshed with the first lower tooth portion of the corresponding lower rack, and the second saddle teeth of the plurality of lower eccentric saddles of another lower supporting roller are respectively meshed with the second lower tooth portion of the corresponding lower rack.

10. The pole piece rolling mill according to claim 9, characterized in that: The top of the lower connecting seat is provided with two lower arc-shaped grooves corresponding to the two lower support rollers respectively, and the lower eccentric saddle is provided with a second arc-shaped block, and the outer peripheral surfaces of the second arc-shaped blocks of the multiple lower eccentric saddles of the lower support roller are matched with the bottoms of the corresponding lower arc-shaped grooves.

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