A cold rolling device and cold rolling method for processing battery nickel strips

Abstract

The present application provides a cold rolling device and a cold rolling method for processing battery nickel strips, which relate to the technical field of nickel strip processing. A cold rolling device for processing battery nickel strips includes a cleaning mechanism. The cleaning mechanism includes a driving cylinder and a driven cylinder arranged coaxially. An inner cylinder is fixedly connected inside the driving cylinder. The inner cylinder is inserted into the driven cylinder in a limited manner. A driving cylinder is fixedly connected inside the driven cylinder. The driving cylinder is inserted into the inner cylinder. A rotating shaft is rotatably connected coaxially inside the driving cylinder. The rotating shaft is inserted into the driving cylinder. One end of the driving cylinder fixedly connected to the driven cylinder is communicated with a negative pressure pipe. The negative pressure pipe penetrates through the driven cylinder and is externally connected to a vacuum pumping device. By using the externally connected vacuum pumping device, negative pressure is respectively provided to the cleaning mechanisms located on the top and bottom sides of the material to be rolled, so that before rolling the material to be rolled, surface cleaning treatment is performed on the top and bottom sides of the material to be rolled, avoiding the appearance of defects on the surface of the material after rolling caused by residual dirt on it during the rolling process.

Description

Technical Field

[0001] The present application relates to the technical field of nickel strip processing, and in particular, to a cold rolling device and a cold rolling method for processing battery nickel strips. Background Art

[0002] Nickel strips are used in battery production and connection pieces, tab ears, lead-out pieces, current collector plates, etc.

[0003] During the production process of nickel strips, processing techniques such as hot rolling, cold rolling, and finish rolling are required. Among them, cold rolling uses hot-rolled products as raw materials. Before cold rolling, the raw materials need to be pickled first to ensure the surface cleanliness of the cold-rolled products. Then, the intermediate products with treated surfaces are rolled to cause deformation of the intermediate products.

[0004] However, after pickling, residues from the pickling process will inevitably remain on the surface of the intermediate products. If the intermediate products containing residues are directly rolled, the solid-phase residues on them will cause defects on the surface of the deformed products, and the liquid-phase residues will increase the additional working load for the rolling work due to the wet and slippery surface of the products. If the intermediate products are additionally surface-treated, it will additionally increase the cost in the entire production process. Summary of the Invention

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present application provides a cold rolling device for processing battery nickel strips, including a frame symmetrically fixed on a base. An upper support roll, an upper intermediate roll, and an upper working roll are sequentially installed on the frame from top to bottom, and a lower support roll, a lower intermediate roll, and a lower working roll are respectively symmetrically arranged with the upper support roll, the upper intermediate roll, and the upper working roll. A driving mechanism for regulation is provided on the frame. The driving mechanism includes an upper longitudinal hydraulic component corresponding to the upper support roll, a lower longitudinal hydraulic component corresponding to the lower support roll, an upper transverse hydraulic component corresponding to the upper intermediate roll, and a lower transverse hydraulic component corresponding to the lower intermediate roll. The nickel strip is rolled between the upper working roll and the lower working roll, and further includes:

[0006] Cleaning mechanisms with the same structure and size are respectively arranged on the same side of the upper intermediate roll and the lower intermediate roll. The cleaning mechanism corresponding to the upper intermediate roll and the cleaning mechanism corresponding to the lower intermediate roll are flipped by 180°, and the air inlet ends of the two cleaning mechanisms are close to each other;

[0007] The two cleaning mechanisms are respectively fixed on the upper transverse hydraulic component and the lower transverse hydraulic component;

[0008] Among them, the cleaning mechanism includes an active cylinder and a passive cylinder arranged coaxially. An inner cylinder is fixedly connected inside the active cylinder. The inner cylinder is inserted into the passive cylinder in a limited manner. A driving cylinder is fixedly connected inside the passive cylinder. The driving cylinder is inserted into the inner cylinder. A rotating shaft is rotatably connected coaxially inside the active cylinder. The rotating shaft is inserted into the driving cylinder. Air inlet grooves with the same amplitude are provided on the active cylinder, the passive cylinder, and the inner cylinder.

[0009] One end of the driving cylinder fixedly connected to the passive cylinder is communicated with a negative pressure pipe. The negative pressure pipe penetrates through the passive cylinder and is externally connected to a vacuum pumping device.

[0010] Spiral grooves are evenly arranged along the axial circumference on the side wall of the driving cylinder.

[0011] In addition, a cold rolling device for processing battery nickel strips according to an embodiment of the present application further has the following additional technical features:

[0012] In some specific embodiments of the present application, a left hanging ear is fixedly connected to one end of the active cylinder away from the passive cylinder. The left hanging ears on the two cleaning mechanisms are respectively fixedly connected to the same side of the upper horizontal hydraulic component and the lower horizontal hydraulic component.

[0013] A right hanging ear is fixedly connected to one end of the passive cylinder away from the active cylinder. The right hanging ears on the two cleaning mechanisms are respectively fixedly connected to the other side of the upper horizontal hydraulic component and the lower horizontal hydraulic component.

[0014] In some specific embodiments of the present application, a first outer ventilation groove is provided on the side wall of the active cylinder, and a second outer ventilation groove communicated with the first outer ventilation groove is provided on the side wall of the passive cylinder.

[0015] In some specific embodiments of the present application, an inner ventilation groove is provided on the side wall of the inner cylinder. The inner ventilation groove has the same angle as the first outer ventilation groove and the second outer ventilation groove.

[0016] The air inlet groove is composed of the first outer ventilation groove, the second outer ventilation groove, and the inner ventilation groove.

[0017] In some specific embodiments of the present application, the rotation amplitude of the spiral groove on the side wall of the driving cylinder is 360°.

[0018] In some specific embodiments of the present application, support rings are respectively fixedly connected to both ends of the driving cylinder. Among them, the support ring close to the inner cylinder is fixedly connected to the inner cylinder, and the support ring far from the inner cylinder is in sliding fit with the inner wall of the inner cylinder.

[0019] In some specific embodiments of the present application, an air outlet hole is provided at one end of the driving cylinder, and the negative pressure pipe is inserted into the air outlet hole.

[0020] In some specific embodiments of the present application, both ends of the spiral groove do not penetrate the driving cylinder.

[0021] In some specific embodiments of the present application, a guide block is evenly fixedly connected to the circumference of one end of the rotating shaft, and the guide block and the spiral groove are slidably matched.

[0022] In some specific embodiments of the present application, a reinforcement mechanism is coaxially arranged inside the active cylinder and the passive cylinder, and the reinforcement mechanism includes a reinforcement component for controlling the amplitude of the air inlet slot, and a power component and a gear ring for providing axial rotation capability to the reinforcement component, wherein the reinforcement component can rotate axially within the active cylinder and the passive cylinder, the power component is provided with rotation capability by the rotating shaft, and the gear ring is fixedly connected to the active cylinder.

[0023] In some specific embodiments of the present application, an embedding groove is provided on the inner wall of the driving cylinder in the axial direction, and an annular groove is provided on the inner wall of the driving cylinder in the circumferential direction, and the annular groove and the embedding groove are not communicated with each other.

[0024] In some specific embodiments of the present application, a limiting ring is provided on the inner wall of the inner cylinder near one end of the annular groove, and a clearance groove is provided on the portion of the inner cylinder between the limiting ring and the annular groove. The clearance groove is connected to the embedding groove, and the two have the same amplitude.

[0025] In some specific embodiments of the present application, the reinforcing assembly includes a swivel rotatably connected to the inner cylinder, and the swivel and the limit ring are slidably matched;

[0026] A first stop bar is fixedly connected to the side wall of the rotating ring, and the first stop bar slides in the clearance groove and the embedding groove;

[0027] One end of the first baffle away from the rotating ring is fixedly connected to a guide rod, and the guide rod is plugged with a second baffle. The amplitude of the second baffle is consistent with that of the first baffle, and the second baffle is axially positioned with the inner wall of the passive cylinder.

[0028] In some specific embodiments of the present application, the power assembly includes a driving gear fixedly sleeved on the rotating shaft, a plurality of driven gears of the same size are evenly meshed on the circumference of the driving gear, and the driven gears are rotatably connected to the rotating ring;

[0029] The diameter of the driving gear is smaller than the diameter of the driven gear.

[0030] In some specific embodiments of the present application, the gear ring is fixedly connected to the annular groove, and the inner side of the gear ring is meshed with the plurality of driven gears.

[0031] In some specific embodiments of the present application, an auxiliary mechanism is fixedly connected to one side of the active cylinder and the passive cylinder where the ventilation grooves are provided on the side walls. The auxiliary mechanism includes an active suction port fixedly connected to the outer wall of the active cylinder and a passive suction port fixedly connected to the outer wall of the passive cylinder. An active telescopic port and a passive telescopic port are elastically inserted into the active suction port and the passive suction port, respectively, and the active telescopic port and the passive telescopic port are inserted and matched with each other.

[0032] In some specific embodiments of the present application, the active suction port and the passive suction port have the same structural size. Two limiting plates are symmetrically arranged in the active suction port, and the limiting plates are fixedly connected to the active cylinder.

[0033] In some specific embodiments of the present application, the active telescopic port and the passive telescopic port have the same size. A plug rod is fixedly connected to one end of the active telescopic port facing the passive telescopic port, and the passive telescopic port is slidably sleeved on the plug rod. The active telescopic port is elastically inserted between the active suction port and the limiting plate, and the passive telescopic port is elastically inserted into the passive suction port.

[0034] In some specific embodiments of the present application, telescopic members are symmetrically arranged at both ends of the active telescopic port and the passive telescopic port. The telescopic members include guide rods fixedly connected to the active cylinder and the passive cylinder. The guide rods are symmetrically and limitably inserted into the active telescopic port and the passive telescopic port, and springs are sleeved on one ends of the guide rods located outside the active telescopic port and the passive telescopic port.

[0035] A cold rolling device for processing battery nickel strips according to an embodiment of the present application has the following beneficial effects:

[0036] 1. By using an external vacuum pumping device, negative pressure is respectively provided to the cleaning mechanisms located on the top and bottom sides of the material to be rolled, so that before rolling the material to be rolled, the top and bottom sides of the material to be rolled are subjected to surface cleaning treatment, avoiding the appearance of defects on the surface of the rolled material caused by residual dirt during the rolling process.

[0037] 2. By using the limiting and inserting relationship between the inner cylinder and the passive cylinder, the active cylinder and the passive cylinder can be axially extended or shortened to adapt to the axial displacement of the corresponding intermediate roll, avoiding that the cleaning mechanism cannot fully cover the material to be rolled.

[0038] 3. By using the spiral grooves axially and circumferentially arranged on the driving cylinder, the negative pressure is transmitted to the air inlet grooves on the cleaning mechanism as evenly as possible, and the treatment effect of the cleaning mechanism on the surface of the raw material to be rolled is ensured as much as possible.

[0039] On the other hand, an embodiment of the present application further provides a cold rolling method for battery nickel strips, including the following steps:

[0040] S1: Calibrate the cold rolling equipment:

[0041] Based on the width and thickness of the raw material, determine whether axial displacement of the two intermediate rolls and the spacing between the two working rolls are required respectively. According to actual needs, move the two intermediate rolls closer or farther axially to eliminate the harmful contact part between the roll bodies outside the width of the raw material;

[0042] S2: Surface treatment of the material to be rolled before rolling:

[0043] When the material to be rolled enters between the two working rolls, it will first pass between the two cleaning mechanisms. Start the external vacuum pumping equipment to generate a strong suction force in the direction towards the surface of the material to be rolled by the two cleaning mechanisms, and remove dirt from the two surfaces of the material to be rolled;

[0044] S3: Dirt removal. Generate negative pressure inside the driving cylinder through the negative pressure pipe, and transmit the suction force generated by the negative pressure to between the driving cylinder and the driven cylinder through the spiral groove communicated with the negative pressure pipe on the side wall of the driving cylinder, and suck dirt from the surface of the material to be rolled through the air inlet groove on it;

[0045] S4: Deformation of the cleaning mechanism. The driving cylinders and the driven cylinders on the two cleaning mechanisms can respectively undergo axial displacement following the corresponding upper and lower transverse hydraulic components, so that the cleaning mechanisms are adapted to materials to be rolled with different widths;

[0046] S5: Rolling. The material to be rolled after cleaning passes between the two working rolls, and the rolling pressure is provided by the two support rolls and the two intermediate rolls, and the adverse effect of the deflection of the working rolls is eliminated, and the deformation of the material to be rolled is controlled to make the material to be rolled thinner and wider.

[0047] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0049] Figure 1 is the overall structural schematic diagram of a cold rolling equipment for processing battery nickel strips according to an embodiment of the present application;

[0050] Figure 2It is a schematic diagram of a partial structure of a cold rolling device for processing battery nickel strips according to an embodiment of the present application;

[0051] Figure 3 It is an exploded view of a partial structure of a cold rolling device for processing battery nickel strips according to an embodiment of the present application;

[0052] Figure 4 It is a cross-sectional view of a partial structure of a cold rolling device for processing battery nickel strips according to an embodiment of the present application;

[0053] Figure 5 It is a schematic diagram of the internal structure of a cleaning mechanism according to an embodiment of the present application;

[0054] Figure 6 It is an exploded view of the structure of a cleaning mechanism according to an embodiment of the present application;

[0055] Figure 7 It is a cross-sectional view of the structure of a cleaning mechanism according to an embodiment of the present application;

[0056] Figure 8 It is a schematic diagram of the position of a strengthening mechanism according to an embodiment of the present application;

[0057] Figure 9 It is an exploded view of the structure of a strengthening mechanism and an exploded view of a partial structure of a cleaning mechanism according to an embodiment of the present application;

[0058] Figure 10 It is according to an embodiment of the present application Figure 9 An enlarged schematic diagram of A in;

[0059] Figure 11 It is according to an embodiment of the present application Figure 9 An enlarged schematic diagram of B in;

[0060] Figure 12 It is an exploded view of the structure of a strengthening component according to an embodiment of the present application;

[0061] Figure 13 It is an exploded view of the structure of an auxiliary mechanism and an exploded view of a partial structure of a cleaning mechanism according to an embodiment of the present application;

[0062] Figure 14 It is a cross-sectional view of a partial structure of an auxiliary mechanism according to an embodiment of the present application;

[0063] Figure 15 It is an exploded view of a partial structure of an auxiliary mechanism according to an embodiment of the present application.

[0064] Icon: 1. Frame; 11. Upper support roller; 111. Lower support roller; 12. Upper intermediate roller; 121. Lower intermediate roller; 13. Upper working roller; 131. Lower working roller; 2. Driving mechanism; 21. Upper longitudinal hydraulic component; 22. Lower longitudinal hydraulic component; 23. Upper transverse hydraulic component; 24. Lower transverse hydraulic component; 3. Cleaning mechanism; 301. Left hanging ear; 302. Right hanging ear; 31. Driving cylinder; 311. First outer ventilation groove; 312. Embedded groove; 313. Annular groove; 32. Driven cylinder; 321. Second outer ventilation groove; 33. Inner cylinder; 331. Inner ventilation groove; 332. Limit ring; 333. Relief groove; 34. Driving barrel; 341. Spiral groove; 342. Support ring; 343. Air outlet; 35. Rotating shaft; 351. Guide block; 36. Negative pressure pipe; 4. Reinforcing mechanism; 41. Reinforcing component; 411. Rotating ring; 412. First stop bar; 413. Guide rod; 414. Second stop bar; 42. Power component; 421. Driving gear; 422. Driven gear; 43. Tooth ring; 5. Auxiliary mechanism; 51. Active suction port; 511. Limit plate; 52. Passive suction port; 53. Active telescopic port; 531. Insert rod; 54. Passive telescopic port; 55. Telescopic component; 551. Guide rod; 552. Spring. Detailed implementation mode

[0065] To make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0066] As Figures 1-15 shown, a cold rolling device for processing battery nickel strips according to an embodiment of the present application includes a frame 1 symmetrically fixed on a base. An upper support roller 11, an upper intermediate roller 12 and an upper working roller 13 are sequentially installed on the frame 1 from top to bottom, and a lower support roller 111, a lower intermediate roller 121 and a lower working roller 131 symmetrically arranged with the upper support roller 11, the upper intermediate roller 12 and the upper working roller 13 respectively. A driving mechanism 2 for regulation is arranged on the frame 1. The driving mechanism 2 includes an upper longitudinal hydraulic component 21 corresponding to the upper support roller 11, a lower longitudinal hydraulic component 22 corresponding to the lower support roller 111, an upper transverse hydraulic component 23 corresponding to the upper intermediate roller 12, and a lower transverse hydraulic component 24 corresponding to the lower intermediate roller 121. The nickel strip is rolled between the upper working roller 13 and the lower working roller 131. For the specific working principle, refer to the working principle of the six-high rolling mill in the prior art, and no detailed description will be given here.

[0067] Among them, cleaning mechanisms 3 with the same structure and size are respectively arranged on the same sides of the upper intermediate roll 12 and the lower intermediate roll 121. The cleaning mechanism 3 corresponding to the upper intermediate roll 12 and the cleaning mechanism 3 corresponding to the lower intermediate roll 121 are flipped by 180°. The air inlet ends of the two cleaning mechanisms 3 are close to each other, that is, the two cleaning mechanisms 3 have exactly the same structure and size, but different installation directions.

[0068] As Figures 1-3 shown, the two cleaning mechanisms 3 are respectively fixedly connected to the upper transverse hydraulic member 23 and the lower transverse hydraulic member 24.

[0069] As Figures 4-7 shown, the cleaning mechanism 3 includes a driving cylinder 31 and a driven cylinder 32 arranged coaxially. An inner cylinder 33 is fixedly connected inside the driving cylinder 31. The inner cylinder 33 is inserted into the driven cylinder 32 in a limited way (to prevent the separation between the driven cylinder 32 and the driving cylinder 31). A driving cylinder 34 is fixedly connected inside the driven cylinder 32. The driving cylinder 34 is inserted into the inner cylinder 33. A rotating shaft 35 is rotatably connected coaxially inside the driving cylinder 31. The rotating shaft 35 is inserted into the driving cylinder 34. Air inlet grooves with the same amplitude are arranged on the driving cylinder 31, the driven cylinder 32, and the inner cylinder 33;

[0070] One end of the driving cylinder 34 fixedly connected to the driven cylinder 32 is communicated with a negative pressure pipe 36. The negative pressure pipe 36 penetrates through the driven cylinder 32 and is externally connected to a vacuum pumping device for providing negative pressure to the air inlet groove to form suction force;

[0071] Spiral grooves 341 are uniformly arranged on the side wall of the driving cylinder 34 along the axial circumference.

[0072] In addition, a cold rolling device for processing battery nickel strips according to an embodiment of the present application further has the following additional technical features:

[0073] Among them, a left hanging ear 301 is fixedly connected to one end of the driving cylinder 31 away from the driven cylinder 32. The left hanging ears 301 on the two cleaning mechanisms 3 are respectively fixedly connected to the same side of the upper transverse hydraulic member 23 and the lower transverse hydraulic member 24;

[0074] A right hanging ear 302 is fixedly connected to one end of the driven cylinder 32 away from the driving cylinder 31. The right hanging ears 302 on the two cleaning mechanisms 3 are respectively fixedly connected to the other sides of the upper transverse hydraulic member 23 and the lower transverse hydraulic member 24.

[0075] In this way, when the two intermediate rolls have relative axial displacement, the corresponding cleaning mechanisms 3 will synchronously follow and have axial changes.

[0076] Furthermore, a first outer ventilation groove 311 is arranged on the side wall of the driving cylinder 31, and a second outer ventilation groove 321 communicated with the first outer ventilation groove 311 is arranged on the side wall of the driven cylinder 32.

[0077] Furthermore, an inner ventilation groove 331 is provided on the side wall of the inner cylinder 33, and the inner ventilation groove 331 is at the same angle as the first outer ventilation groove 311 and the second outer ventilation groove 321;

[0078] The air inlet groove is composed of the first outer ventilation groove 311, the second outer ventilation groove 321 and the inner ventilation groove 331.

[0079] Furthermore, the rotation amplitude of the spiral groove 341 on the side wall of the driving cylinder 34 is 360°.

[0080] Wherein, support rings 342 are fixedly connected to both ends of the driving cylinder 34 respectively. The support ring 342 close to the inner cylinder 33 is fixedly connected to the inner cylinder 33, and the support ring 342 far from the inner cylinder 33 is in sliding fit with the inner wall of the inner cylinder 33. It should be noted that a plurality of holes are uniformly arranged on the support ring 342 in sliding fit with the inner wall of the inner cylinder 33 to balance the negative pressure on both sides of the support ring 342.

[0081] Furthermore, an air outlet hole 343 is provided at one end of the driving cylinder 34, and the negative pressure pipe 36 is inserted into the air outlet hole 343.

[0082] Furthermore, both ends of the spiral groove 341 do not penetrate through the driving cylinder 34.

[0083] Furthermore, guide blocks 351 are fixedly connected to the circumference of one end of the rotating shaft 35 at equal intervals, and the guide blocks 351 are in sliding fit with the spiral groove 341.

[0084] Since both ends of the spiral groove 341 do not penetrate through the driving cylinder 34, the displacement stroke of the guide block 351 is restricted.

[0085] Next, the use process of a cold rolling device for processing battery nickel strips according to an embodiment of the present application will be described with reference to the accompanying drawings:

[0086] During use, start the external vacuum pumping device. When the material to be rolled passes between the two cleaning mechanisms 3, at this time, due to the external vacuum pumping device providing negative pressure in the direction of the negative pressure pipe 36, when the cleaning mechanism 3 does not need to be extended, the inside of the driving cylinder 34 connected to the negative pressure pipe 36 will form a negative pressure through external vacuum pumping. Inside the entire cleaning mechanism 3, through the spiral groove 341, the support ring 342 sliding on the inner wall of the inner cylinder 33, and the inner ventilation groove 331, a connected whole is formed. Therefore, a negative pressure is formed at the first external ventilation groove 311 and the second external ventilation groove 321. In this way, the top and bottom sides of the material to be rolled will be subjected to the suction force of the two cleaning mechanisms 3, forming a surface treatment operation for the material to be rolled. When the cleaning mechanism 3 needs to be extended along with the corresponding intermediate roll, the driving cylinder 31 on it drives the inner cylinder 33, the passive cylinder 32, and the driving cylinder 34 to move axially away from each other. At this time, a fault is formed between the first external ventilation groove 311 and the second external ventilation groove 321, and the inner ventilation groove 331 on the inner cylinder 33 will compensate for this fault, so that a complete air inlet groove is still formed between the first external ventilation groove 311 and the second external ventilation groove 321. In this way, it can be ensured that when the cleaning mechanism 3 is axially extended or shortened, the suction force at its air inlet groove can be guaranteed. Further, due to the existence of the spiral groove 341 and the holes on the support ring 342 sliding on the inner wall of the inner cylinder 33, the pressure inside the cleaning mechanism 3 will be balanced. In this way, no matter whether the cleaning mechanism 3 is axially extended or shortened, the suction force at its air inlet groove can be maintained balanced to a certain extent, achieving comprehensive dirt suction on the surface of the material to be rolled, and avoiding damage to the surface of the material to be rolled caused by the dirt remaining on the surface of the material to be rolled during the rolling process, or avoiding the slipping phenomenon of the material to be rolled when it just enters between the two working rolls due to the wet and slippery surface of the material to be rolled.

[0087] In the related art, when the cleaning mechanism 3 is axially extended, the coverage area of its air inlet groove increases. When the suction force of the external vacuum pumping device is constant, at this time, the suction force at the air inlet groove of the cleaning mechanism 3 will decrease to a certain extent with the increase of its coverage area, affecting its adsorption ability to the surface of the material to be rolled, and then resulting in insufficient dirt treatment.

[0088] According to some embodiments of the present application, as Figures 8-12 shown, an enhancement mechanism 4 is coaxially arranged inside the driving cylinder 31 and the passive cylinder 32. The enhancement mechanism 4 includes a strengthening component 41 for controlling the amplitude of the air inlet groove, a power component 42 for providing the axial rotation ability to the strengthening component 41, and a toothed ring 43. Among them, the strengthening component 41 can rotate axially and be limited in the driving cylinder 31 and the passive cylinder 32 (the rotation amplitude is limited), the power component 42 is provided with the rotation ability by the rotating shaft 35, and the toothed ring 43 is fixedly connected to the driving cylinder 31.

[0089] Further, an insertion groove 312 is axially provided on the inner wall of the driving cylinder 31, and an annular groove 313 is circumferentially provided on the inner wall of the driving cylinder 31. The annular groove 313 and the insertion groove 312 are not communicated with each other.

[0090] Wherein, a limiting ring 332 is provided on the inner wall of the inner cylinder 33 near one end of the annular groove 313. A relief groove 333 is provided on the part of the inner cylinder 33 between the limiting ring 332 and the annular groove 313. The relief groove 333 is communicated with the insertion groove 312, and the amplitudes of the two are the same.

[0091] Further, the strengthening component 41 includes a rotating ring 411 rotatably connected inside the inner cylinder 33, and the rotating ring 411 is slidably matched with the limiting ring 332.

[0092] A first blocking bar 412 is fixedly connected to the side wall of the rotating ring 411. The first blocking bar 412 slides in the relief groove 333 and the insertion groove 312. Specifically, the first blocking bar 412 can only rotate axially in the relief groove 333 and the insertion groove 312, and cannot perform axial displacement. In this way, the relief groove 333 plays a role in positioning the axial position of the rotating ring 411 inside the inner cylinder 33. Thus, it can be understood that when the inner cylinder 33 undergoes axial displacement, the rotating ring 411 will follow and undergo synchronous and co-directional axial displacement.

[0093] At the same time, a guiding rod 413 is fixedly connected to the end of the first blocking bar 412 away from the rotating ring 411. A second blocking bar 414 is inserted on the guiding rod 413. The amplitude of the second blocking bar 414 is the same as that of the first blocking bar 412, and the second blocking bar 414 is axially positioned with respect to the inner wall of the driven cylinder 32, that is, the axial position of the second blocking bar 414 inside the driven cylinder 32 is positioned.

[0094] It can be understood that when the driving cylinder 31 and the driven cylinder 32 move axially away from each other, at this time, the first blocking bar 412 will follow the driving cylinder 31 and undergo synchronous and co-directional axial displacement, while the second blocking bar 414 remains in place inside the driven cylinder 32. At this time, the guiding rod 413 performs an action of being pulled out from the second blocking bar 414 (affected by the limiting insertion relationship between the driving cylinder 31 and the driven cylinder 32, in the embodiment of the present application, the guiding rod 413 will not detach from the inside of the second blocking bar 414).

[0095] Further, the power component 42 includes a driving gear 421 fixedly sleeved on the rotating shaft 35. A plurality of driven gears 422 of the same size are evenly meshed on the circumferential side of the driving gear 421. The driven gears 422 are rotatably connected to the rotating ring 411, and the diameter of the driving gear 421 is smaller than the diameter of the driven gears 422.

[0096] Further, a toothed ring 43 is fixedly connected to the annular groove 313, and the inner side of the toothed ring 43 is meshed with a plurality of driven gears 422.

[0097] It can be understood that when the rotating shaft 35 rotates under the guiding action of the guiding block 351 thereon by the spiral groove 341, it will drive the driving gear 421 to rotate synchronously and in the same direction. In this way, when the multiple driven gears 422 meshing with the driving gear 421 and the toothed ring 43 rotate around their own axes, they will rotate around the driving gear 421 as the axis, and then drive the rotating ring 411 to rotate. Further, through the rotation of the rotating ring 411, the first blocking strip 412 fixedly connected thereto and the second blocking strip 414 inserted into the first blocking strip 412 can be driven to rotate synchronously and in the same direction, thereby covering a certain range of the air inlet groove of the cleaning mechanism 3, that is, changing the amplitude of the air inlet groove.

[0098] In the embodiment of the present application, since the rotation angle of the spiral groove 341 is 360°, when the driving cylinder 31 and the driven cylinder 32 move axially away from each other, the rotating shaft 35 will rotate under the guiding action of the guiding block 351 thereon by the spiral groove 341, and its maximum rotation angle is 360°. At the same time, the rotating shaft 35 moves axially synchronously and in the same direction with the driving cylinder 31. Thus, it should be noted that in the embodiment of the present application, when the driving gear 421 rotates one week, it will drive the rotating ring 411 to rotate through the driven gears 422, and the rotation angle of the rotating ring 411 can only make the first blocking strip 412 rotate within the angular range of the embedding groove 312 and the first outer ventilation groove 311, that is, can only make the first blocking strip 412 block the first outer ventilation groove 311 (but not completely close it).

[0099] Therefore, when the driving cylinder 31 and the driven cylinder 32 move axially away from each other, the rotating shaft 35 rotates under the guidance of the spiral groove 341 on its guiding block 351. The rotation of the rotating shaft 35 drives the driving gear 421 to rotate synchronously in the same direction. The rotating ring 411, the driving gear 421, and the toothed ring 43 are axially positioned within the driving cylinder 31. Thus, the driven gear 422 will always remain meshed with the rotating ring 411 and the toothed ring 43 respectively. Then, when the driving gear 421 rotates, it will drive the driven gear 422 to rotate self - rotatably. Since the driven gear 422 is meshed with the fixed toothed ring 43, the driven gear 422 further rotates around the driving gear 421 as the axis. In this way, it will drive the rotating ring 411 to rotate around the rotating shaft 35 as the axis. It can be understood that the design of the rotation direction of the spiral groove 341 and the fixed position of the driving cylinder 34 in the embodiment of the present application enables the first stop bar 412 initially located within the slot 312 (i.e., not blocking the first outer ventilation groove 311) to rotate within the angular range where the first outer ventilation groove 311 is located when the driving cylinder 31 and the driven cylinder 32 move axially away from each other. When the guiding block 351 displaces from one end of the spiral groove 341 away from the rotating ring 411 to the other end, at this time, the first stop bar 412 and the second stop bar 414 rotate to the limit, and at this time, they block the first outer ventilation groove 311 and the second outer ventilation groove 321 (but do not completely enclose them). At this time, the air inlet groove of the cleaning mechanism 3 will be composed of the partially blocked first outer ventilation groove 311 and the second outer ventilation groove 321, and the inner ventilation groove 331 between the first outer ventilation groove 311 and the second outer ventilation groove 321. At this time, the angular span of the ventilation groove is limited, so its coverage area is reduced to a certain extent. Consequently, the suction force at this location will be enhanced to a certain extent to make up for the problem of insufficient suction force at the air inlet groove of the cleaning mechanism 3 when the cleaning mechanism 3 extends axially.

[0100] In the related art, since the height of the cleaning mechanism 3 on the driving mechanism 2 is affected by the distance between the two intermediate rollers, the distance between the two cleaning mechanisms 3 cannot be adjusted independently. Thus, for rolling materials of different thicknesses, the surface treatment capabilities of the two cleaning mechanisms 3 for different rolling materials vary due to the different distances between the air inlet groove and the surface of the material to be rolled. Once the distance is too far, it will affect the surface treatment ability of the material to be rolled.

[0101] According to some embodiments of the present application, as Figures 13-15 shown, on one side of the side walls of the driving cylinder 31 and the driven cylinder 32 where ventilation grooves are provided, an auxiliary mechanism 5 is fixedly connected. The auxiliary mechanism 5 includes a driving suction port 51 fixedly connected to the outer wall of the driving cylinder 31, a driven suction port 52 fixedly connected to the outer wall of the driven cylinder 32. An active telescopic port 53 and a passive telescopic port 54 are elastically inserted into the driving suction port 51 and the driven suction port 52 respectively, and the active telescopic port 53 and the passive telescopic port 54 are inserted and matched with each other.

[0102] Furthermore, the active suction port 51 and the passive suction port 52 have the same structural size. Two limiting plates 511 are symmetrically arranged inside the active suction port 51, and the limiting plates 511 are fixedly connected to the active cylinder 31. It can be understood that the structure inside the passive suction port 52 is the same as that of the active suction port 51.

[0103] Among them, the active telescopic port 53 and the passive telescopic port 54 have the same size. A plug rod 531 is fixedly connected to one end of the active telescopic port 53 facing the passive telescopic port 54, and the passive telescopic port 54 is slidably sleeved on the plug rod 531. In this way, the active telescopic port 53 and the passive telescopic port 54 will maintain synchronous lifting actions inside the active suction port 51 and the passive suction port 52. Among them, the active telescopic port 53 is elastically inserted between the active suction port 51 and the limiting plate 511, and the passive telescopic port 54 is elastically inserted into the passive suction port 52.

[0104] Furthermore, telescopic members 55 are symmetrically arranged at both ends of the active telescopic port 53 and the passive telescopic port 54 respectively. The telescopic member 55 includes a guide rod 551 fixedly connected to the active cylinder 31 and the passive cylinder 32. The guide rod 551 is symmetrically and limit-inserted into the active telescopic port 53 and the passive telescopic port 54. A spring 552 is sleeved on one end of the guide rod 551 located outside the active telescopic port 53 and the passive telescopic port 54.

[0105] Thus, it can be understood that when the bottom sides of the active telescopic opening 53 and the passive telescopic opening 54 are not squeezed (not in contact with the surface of the material to be rolled), at this time, under the elastic force of the spring 552, the active telescopic opening 53 and the passive telescopic opening 54 that form a plug-in connection through the plug rod 531 will be located at the lowest ends of the active suction opening 51 and the passive suction opening 52, that is, the end far from the air inlet groove of the cleaning mechanism 3. At this time, the distance between the air inlet groove and the surface of the material to be rolled is shortened, which to a certain extent makes up for the problem that the cleaning mechanism 3 cannot independently adjust the distance between itself and the surface of the material to be rolled. At the same time, an elastic contact is formed between the air inlet groove and the surface of the material to be rolled, and within its own elastic contraction range, a contact is formed between the air inlet groove and the surface of the material to be rolled, which can enhance the suction force of the air inlet groove to a certain extent. Further, when the cleaning mechanism 3 undergoes axial elongation, due to the separation between the active suction opening 51 and the passive suction opening 52, the active telescopic opening 53 and the passive telescopic opening 54 will be driven to move away synchronously. Under the action of the plug rod 531, the active telescopic opening 53 and the passive telescopic opening 54 will still be kept at the same height. It should be noted that in the embodiment of the present application, the plug-in connection between the active telescopic opening 53 and the passive telescopic opening 54 can further change the plug rod 531 into a plug board, so as to make the coverage area of the air inlet end formed between the two as uniform as possible when the active telescopic opening 53 and the passive telescopic opening 54 move away from each other, so as to maintain the suction balance formed on the surface of the material to be rolled at this place as much as possible.

[0106] On the other hand, the embodiment of the present application further provides a cold rolling method for battery nickel strips, including the following steps:

[0107] S1: Calibrate the cold rolling equipment:

[0108] According to the width and thickness of the raw material, determine whether axial displacement of the two intermediate rolls and the distance between the two working rolls are required respectively. According to actual needs, the two intermediate rolls can be axially moved closer or farther away to eliminate the harmful contact parts between the roll bodies outside the width of the raw material;

[0109] S2: Surface treatment of the material to be rolled before rolling:

[0110] When the material to be rolled enters between the two working rolls, it will first pass between the two cleaning mechanisms 3. Start the external vacuum pumping equipment to generate a strong suction force in the direction of the surface of the material to be rolled by the two cleaning mechanisms 3, and remove the dirt on the two surfaces of the material to be rolled;

[0111] S3: Dirt removal. A negative pressure is generated inside the driving cylinder 34 through the negative pressure pipe 36, and the suction force generated by the negative pressure is transmitted between the driving cylinder 31 and the driven cylinder 32 through the spiral groove 341 communicated with the negative pressure pipe 36 on the side wall of the driving cylinder 34. Through the air inlet groove thereon, the surface of the material to be rolled is sucked for dirt removal.

[0112] S4: Deformation of the cleaning mechanism 3. The driving cylinder 31 and the driven cylinder 32 on the two groups of cleaning mechanisms 3 can respectively undergo axial displacement following the corresponding upper transverse hydraulic component 23 and lower transverse hydraulic component 24, so that the cleaning mechanism 3 can be adapted to materials to be rolled with different widths.

[0113] S5: Rolling. The material to be rolled after dirt removal passes between the two working rollers. The rolling pressure is provided by the two supporting rollers and the two intermediate rollers, and the adverse effect of the deflection of the working rollers is eliminated. The deformation of the material to be rolled is controlled to make the material to be rolled thinner and wider.

[0114] It should be noted that the specific model specifications of the upper supporting roller 11, lower supporting roller 111, upper intermediate roller 12, lower intermediate roller 121, upper working roller 13, lower working roller 131, upper longitudinal hydraulic component 21, lower longitudinal hydraulic component 22, upper transverse hydraulic component 23, lower transverse hydraulic component 24, driving gear 421, driven gear 422, toothed ring 43, third bevel gear 414 and spring 552 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated in detail.

[0115] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A cold rolling device for processing battery nickel strips, comprising a frame (1) symmetrically fixed on a base. On the frame (1), an upper support roller (11), an upper intermediate roller (12), and an upper working roller (13) are sequentially installed from top to bottom, and a lower support roller (111), a lower intermediate roller (121), and a lower working roller (131) symmetrically arranged with the upper support roller (11), the upper intermediate roller (12), and the upper working roller (13) respectively. A driving mechanism (2) for regulation is arranged on the frame (1). The driving mechanism (2) includes an upper longitudinal hydraulic component (21) corresponding to the upper support roller (11), a lower longitudinal hydraulic component (22) corresponding to the lower support roller (111), an upper transverse hydraulic component (23) corresponding to the upper intermediate roller (12), and a lower transverse hydraulic component (24) corresponding to the lower intermediate roller (121). The nickel strip is rolled between the upper working roller (13) and the lower working roller (131). It is characterized in that: Cleaning mechanisms (3) with the same structure and size are respectively arranged on the same side of the upper intermediate roller (12) and the lower intermediate roller (121). The cleaning mechanism (3) corresponding to the upper intermediate roller (12) and the cleaning mechanism (3) corresponding to the lower intermediate roller (121) are flipped by 180°, and the air inlet ends of the two cleaning mechanisms (3) are close to each other; The two cleaning mechanisms (3) are respectively fixed on the upper transverse hydraulic component (23) and the lower transverse hydraulic component (24); Among them, the cleaning mechanism (3) includes a driving cylinder (31) and a driven cylinder (32) arranged coaxially. An inner cylinder (33) is fixed inside the driving cylinder (31). The inner cylinder (33) is inserted into the driven cylinder (32) with a limit. A driving cylinder (34) is fixed inside the driven cylinder (32). The driving cylinder (34) is inserted into the inner cylinder (33). A rotating shaft (35) is rotatably connected coaxially inside the driving cylinder (31). The rotating shaft (35) is inserted into the driving cylinder (34). Air inlet grooves with the same amplitude are arranged on the driving cylinder (31), the driven cylinder (32), and the inner cylinder (33); One end of the driving cylinder (34) fixed to the driven cylinder (32) is communicated with a negative pressure pipe (36). The negative pressure pipe (36) penetrates through the driven cylinder (32) and is externally connected to a vacuum pumping device; Spiral grooves (341) are uniformly arranged along the axial circumference on the side wall of the driving cylinder (34); A first outer ventilation groove (311) is arranged on the side wall of the driving cylinder (31), and a second outer ventilation groove (321) communicated with the first outer ventilation groove (311) is arranged on the side wall of the driven cylinder (32); An inner ventilation groove (331) is arranged on the side wall of the inner cylinder (33). The inner ventilation groove (331) is at the same angle as the first outer ventilation groove (311) and the second outer ventilation groove (321); The air inlet groove is composed of the first outer ventilation groove (311), the second outer ventilation groove (321), and the inner ventilation groove (331); Both ends of the spiral groove (341) do not penetrate the driving cylinder (34); One end of the rotating shaft (35) is fixedly connected with guide blocks (351) evenly distributed in the circumferential direction. The guide blocks (351) are in sliding fit with the spiral groove (341); When the cleaning mechanism (3) needs to extend along with the corresponding intermediate roller, the driving cylinder (31) thereon drives the inner cylinder (33), the passive cylinder (32) and the driving cylinder (34) to move axially away from each other. At this time, a fault is formed between the first outer ventilation groove (311) and the second outer ventilation groove (321), and the inner ventilation groove (331) on the inner cylinder (33) will make up for this fault, so that a complete air inlet groove is still formed between the first outer ventilation groove (311) and the second outer ventilation groove (321); the rotation amplitude of the spiral groove (341) on the side wall of the driving cylinder (34) is 360°; Both ends of the driving cylinder (34) are respectively fixedly connected with support rings (342). The support ring (342) far from the inner cylinder (33) is fixedly connected with the driving cylinder (34), and the support ring (342) close to the inner cylinder (33) is in sliding fit with the inner wall of the inner cylinder (33).

2. The cold rolling equipment for processing battery nickel strips according to claim 1, characterized in that: One end of the driving cylinder (31) far from the passive cylinder (32) is fixedly connected with a left hanging ear (301). The left hanging ears (301) on the two cleaning mechanisms (3) are respectively fixedly connected to the same side of the upper transverse hydraulic component (23) and the lower transverse hydraulic component (24); One end of the passive cylinder (32) far from the driving cylinder (31) is fixedly connected with a right hanging ear (302). The right hanging ears (302) on the two cleaning mechanisms (3) are respectively fixedly connected to the other side of the upper transverse hydraulic component (23) and the lower transverse hydraulic component (24).

3. The cold rolling equipment for processing battery nickel strips according to claim 1, characterized in that: One end of the driving cylinder (34) is provided with an air outlet hole (343), and the negative pressure pipe (36) is inserted into the air outlet hole (343).

4. A cold rolling method for battery nickel strips, characterized in that, Using a cold rolling device for processing battery nickel strips according to any one of claims 1-3, comprising the following steps: S1: Calibrate the cold rolling device: According to the width and thickness of the raw material, respectively determine whether it is necessary to axially displace the two intermediate rollers and the distance between the two working rollers. According to actual needs, axially approach or move away from the two intermediate rollers to eliminate the harmful contact parts between the rolls outside the width of the raw material; S2: Surface treatment of the material to be cold rolled before rolling: When the material to be cold rolled enters between the two working rollers, it will first pass between the two cleaning mechanisms (3). Start the external vacuum pumping device to generate a strong suction force in the direction of the surface of the material to be cold rolled by the two cleaning mechanisms (3), and remove the dirt on the two surfaces of the material to be cold rolled; S3: Dirt removal. Make the inside of the driving cylinder (34) generate negative pressure through the negative pressure pipe (36), and transmit the suction force generated by the negative pressure to between the driving cylinder (31) and the passive cylinder (32) through the spiral groove (341) communicated with the negative pressure pipe (36) on the side wall of the driving cylinder (34), and suck the dirt on the surface of the material to be cold rolled through the air inlet groove thereon; S4: The cleaning mechanism (3) deforms, and the driving cylinders (31) and the driven cylinders (32) on the two groups of the cleaning mechanisms (3) can respectively undergo axial displacement following the corresponding upper transverse hydraulic components (23) and lower transverse hydraulic components (24), so that the cleaning mechanism (3) is adapted to the to-be-rolled materials of different widths; S5: Rolling. The to-be-rolled materials after cleaning and decontamination pass between two working rolls, and the rolling pressure is provided by two supporting rolls and two intermediate rolls, and the adverse effects of the deflection of the working rolls are eliminated, and the deformation control of the to-be-rolled materials is carried out to make the to-be-rolled materials thinner and wider.

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