Foil rolling mill for purging and cleaning rolling oil on surface of battery aluminum foil and using method of foil rolling mill

Abstract

The invention discloses a foil rolling mill for purging and cleaning rolling oil on the surface of a battery aluminum foil and a using method, and relates to the technical field of foil rolling mills. A liquid outlet pipe is fixed in a liquid outlet formed in the left side of the mounting frame, an electromagnetic valve is mounted on the circumferential surface of the liquid outlet pipe, two corresponding guide rod oil-liquid separators are mounted at the left end of the lower side of the interior of the mounting frame, and the left side of the interior of the mounting frame is rotationally connected with the guide rod oil-liquid separators; a liquid outlet of the oil-liquid separator is connected with a liquid outlet pipe, a winding assembly is mounted on the right side of the mounting frame, a wiping assembly is mounted on the right side of the interior of the mounting frame, a drying assembly is mounted on the front side of the mounting frame and connected with the wiping assembly, and a rolling assembly is mounted in the middle of the interior of the mounting frame; and a reset assembly and an extrusion assembly are mounted in the mounting frame, and a rolling oil film on the surface of the aluminum foil can be thoroughly removed.

Description

Technical Field

[0001] The present invention relates to the technical field of foil rolling mills, and in particular to a foil rolling mill for blowing and cleaning rolling oil on the surface of battery aluminum foil and a method for using the same. Background Art

[0002] As a key current collector material for lithium and sodium-ion batteries, high-precision, ultra-thin aluminum foil for new energy batteries has stringent requirements for flatness, mechanical properties, and edge quality. Aluminum foil rolling mills, as core processing equipment, achieve precision forming of aluminum foil through a multi-pass rolling process. During the rolling process, rolling oil is widely applied to the surface of the aluminum foil as a process lubricant to ensure rolling stability and surface quality.

[0003] In the current aluminum foil rolling process, the residual rolling oil film remaining on the foil surface after rolling is difficult to effectively remove, directly affecting the surface cleanliness of the finished aluminum foil roll. Traditional treatment methods cannot completely remove the oil film while maintaining the mechanical properties of the aluminum foil, making it difficult to improve product qualification rates. In addition, residual rolling oil may affect the subsequent coating process of battery electrodes, reducing the consistency of battery performance. This problem has become a key bottleneck restricting the quality improvement of aluminum foil for new energy batteries. To this end, we propose a foil rolling mill and method for purging and cleaning the rolling oil from the surface of battery aluminum foil. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a foil rolling mill and a method of use for blowing and cleaning the rolling oil on the surface of battery aluminum foil, which can completely clean the rolling oil film on the surface of the aluminum foil and effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a foil rolling mill for purging and cleaning rolling oil on the surface of battery aluminum foil, comprising a mounting frame and a flushing assembly;

[0006] Mounting frame: A liquid outlet pipe is fixed inside the liquid discharge port arranged on the left side, a solenoid valve is installed on the circumferential surface of the liquid outlet pipe, an oil separator is installed at the left end of the lower side of the interior of the mounting frame, two corresponding guide rods are rotatably connected to the left side of the interior of the mounting frame, the liquid outlet of the oil separator is connected to the liquid outlet pipe, a winding assembly is installed on the right side of the mounting frame, a wiping assembly is installed on the right side of the interior of the mounting frame, a drying assembly is installed on the front side of the mounting frame, the drying assembly is connected to the wiping assembly, a rolling assembly is installed in the middle part of the interior of the mounting frame, a reset assembly and an extrusion assembly are installed inside the mounting frame, and the reset assembly and the extrusion assembly are connected;

[0007] Flushing assembly: includes a connecting barrel, a connecting hose, a connecting frame and an atomizing nozzle. Two corresponding fixing holes are provided on the front side of the mounting frame. The connecting barrel is fixed inside the fixing holes. The circumferential surface of the connecting barrel is provided with evenly distributed liquid outlets. The connecting hose is fixed inside the liquid outlet. The connecting hose is fixed on the end surface away from the connecting barrel with a connecting frame. The atomizing nozzle is installed inside the connecting frame. The reset assembly is connected to all the connecting frames. The aluminum foil is flushed by setting the flushing assembly;

[0008] Wherein: the input ends of the oil-liquid separator and the solenoid valve are both electrically connected to the output end of the external control switch group.

[0009] Furthermore, the reset assembly includes a support frame, an extrusion plate, a guide bar and a reset spring. Two corresponding guide bars are fixed inside the mounting frame. The side of the guide bar is slidably connected to the support frame. The side of the support frame is fixed with an extrusion plate. Two corresponding reset springs are sleeved on the side of the guide bar. The adjacent ends of the two reset springs are respectively fixed to the front and rear sides of the support frame, and the other ends of the two reset springs are respectively fixed to the front and rear sides of the mounting frame. The reset assembly is set to drive the rack to reset.

[0010] Furthermore, the extrusion assembly includes a fixed plate, a second motor, a turntable and a toggle plate. Two corresponding fixed plates are fixed inside the mounting frame. A second motor is installed on the right side of the fixed plate. A turntable is fixed on the output shaft of the second motor. Three corresponding toggle plates are fixed on the circumferential surface of the turntable. The turntable and the extrusion plate correspond to each other. The input end of the second motor is electrically connected to the output end of the external control switch group, and the two extrusion plates are extruded by setting the extrusion assembly.

[0011] Furthermore, the rotating assembly includes a fixing bar, a gear and a rack. Two corresponding fixing bars are fixed inside the mounting frame. Evenly distributed rotating holes are opened on the left side of the fixing bar. The internal rotation of the rotating hole is connected with a gear. The gear is fixed on the side of the corresponding connecting frame. A rack is fixed on the side of the support frame away from the extrusion plate. The two racks are respectively engaged with all the gears above and below. By setting the rotating assembly, all the connecting frames are driven to swing.

[0012] Furthermore, the drying component includes a heater, an air injection tee, a connecting barrel and an air outlet box. The heater is installed at the right end of the front side of the mounting frame. The air injection tee is fixed inside the air outlet of the heater. The two ends of the air injection tee away from the heater are connected to two corresponding connecting barrels. The end face of the connecting barrel is fixed with an air outlet box. The connecting barrel is communicated with the inner cavity of the air outlet box. The input end of the heater is electrically connected to the output end of the external control switch group. The aluminum foil is dried by setting up the drying component.

[0013] Furthermore, the wiping assembly includes a connecting plate and a wiping sponge strip, two corresponding connecting plates are fixed on the right side of the mounting frame, wiping sponge strips are fixed on the side of the connecting plate, an opening is provided on the side of the connecting plate, and the air outlet box is fixed inside the corresponding opening, and the cleaned aluminum foil is wiped by setting the wiping assembly.

[0014] Furthermore, the rolling assembly includes a first motor, a rolling roller and a gear ring. Two corresponding connecting holes are opened in the middle of the front side of the mounting frame. The rolling roller is rotatably connected inside the connecting hole. A gear ring is fixed to the front end of the surface of the rolling roller. The two gear rings are meshed with each other. A first motor is installed on the rear side of the mounting frame. The output shaft of the first motor is fixed to the rear end of the upper rolling roller. The input end of the first motor is electrically connected to the output end of the external control switch group. The aluminum foil is rolled by setting the rolling assembly.

[0015] Furthermore, the winding assembly includes a fixed bar, a third motor and a winding shaft. The fixed bar is fixed to the right side of the mounting frame, the third motor is installed on the front side of the fixed bar, the winding shaft is fixed on the output shaft of the third motor, and the input end of the third motor is electrically connected to the output end of the external control switch group. The aluminum foil is driven to be wound by setting the winding assembly.

[0016] Furthermore, a water inlet tee is fixed at the rear end of the two connecting barrels, and a connecting flange ring is fixed on the surface of the water inlet tee away from one end of the two connecting barrels. The heated hot water is injected into the interior of the two connecting barrels through the water inlet tee.

[0017] A method for using a foil rolling mill for cleaning the surface of battery aluminum foil by blowing rolling oil, comprising the following steps:

[0018] S1: First, one end of the aluminum foil is connected to the reel. After the connection, the third motor is started to rotate the reel, driving the aluminum foil to the right. At this time, the first motor is started, which drives the two rolling rollers to rotate under the action of two meshing gear rings to precisely roll the aluminum foil. During the rolling process, a lubricating film is formed by continuously supplying rolling oil;

[0019] S2: During the rolling process, the hot water heated in the external water storage tank is injected into the interior of the two connecting barrels through the water inlet tee pipe, and then transported to the interior of the atomizing nozzles installed in all the connecting frames through the evenly distributed connecting hoses, forming a high-pressure atomized spray, which is sprayed to the upper and lower sides of the aluminum foil. At the same time, the second motor drives the turntable to drive the toggle plate to periodically push the extrusion plate, so that the support frame moves back and forth along the guide bar. The meshing transmission of the rack and gear realizes the swing spraying of the atomizing nozzle, completing the dynamic double-sided cleaning of the aluminum foil;

[0020] S3: The waste liquid mixed with the rolling oil is guided to the oil separator through a guide rod for oil-water separation. The separated rolling oil is recovered through a liquid outlet pipe controlled by a solenoid valve, and the purified water flows back to the internal part of the external water storage tank for heating circulation;

[0021] S4: The cleaned aluminum foil moves to the right between two wiping sponge strips and is wiped by the two wiping sponge strips to remove the residual oil film on the surface. Then, the heater is started to transport hot air to the air outlet box through the air injection three-way pipe to perform double-sided hot air drying on the aluminum foil.

[0022] S5: The dried aluminum foil is wound to the right by the winding shaft at a uniform speed to complete the cleaning.

[0023] Compared with the prior art, the present invention has the following advantages: the foil rolling mill and the method for using the foil rolling mill for cleaning the surface of the battery aluminum foil by blowing rolling oil have the following advantages:

[0024] 1. The reset component and the extrusion component drive the atomizing nozzle to swing and spray, so that the cleaning liquid can dynamically cover the surface of the aluminum foil at multiple angles, breaking through the limitations of traditional static flushing, achieving efficient double-sided cleaning of the aluminum foil, significantly improving the oil film stripping effect, and ensuring that the surface cleanliness meets the requirements of subsequent processes;

[0025] 2. The oil separator and solenoid valve are used for coordinated control to achieve effective separation and recovery of rolling oil and washing water, forming a resource recycling system, which not only reduces production costs but also reduces waste liquid discharge, meeting the needs of green production;

[0026] 3. Through the three-stage treatment process of high-pressure mist washing, mechanical wiping and hot air drying, the residual oil film on the surface of the aluminum foil is removed layer by layer, solving the problem of insufficient effect of a single cleaning method and significantly improving the surface quality of the finished product and process stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the rolling assembly structure of the present invention;

[0029] Figure 3 This is a schematic structural diagram of the flushing assembly of the present invention;

[0030] Figure 4 This is a schematic diagram of the reset assembly structure of the present invention;

[0031] Figure 5 This is a schematic structural diagram of the wiping component of the present invention.

[0032] In the figure: 1 mounting frame, 2 rolling assembly, 21 first motor, 22 rolling roller, 23 gear ring, 3 flushing assembly, 31 connecting barrel, 32 connecting hose, 33 connecting frame, 34 atomizing nozzle, 4 reset assembly, 41 support frame, 42 extrusion plate, 43 guide bar, 44 reset spring, 5 extrusion assembly, 51 fixed plate, 52 second motor, 53 turntable, 54 toggle plate, 6 rotating assembly, 61 fixed bar, 62 gear, 63 rack, 7 drying assembly, 71 heater, 72 air injection tee, 73 connecting barrel, 74 air outlet box, 8 winding assembly, 81 fixed bar, 82 third motor, 83 winding shaft, 9 wiping assembly, 91 connecting plate, 92 wiping sponge bar, 10 guide rod, 11 liquid outlet pipe, 12 solenoid valve, 13 water inlet tee, 14 connecting flange ring, 15 oil separator. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-5 , this embodiment provides a technical solution: a foil rolling mill for purging and cleaning rolling oil on the surface of battery aluminum foil, comprising a mounting frame 1 and a flushing assembly 3;

[0035] Mounting frame 1: A liquid outlet pipe 11 is fixed inside the liquid outlet provided on the left side, and a solenoid valve 12 is installed on the circumferential surface of the liquid outlet pipe 11. An oil separator 15 is installed at the left end of the lower side of the interior of the mounting frame 1. Two corresponding guide rods 10 are rotatably connected to the left side of the interior of the mounting frame 1. The liquid outlet of the oil separator 15 is connected to the liquid outlet pipe 11. A winding assembly 8 is installed on the right side of the mounting frame 1. A wiping assembly 9 is installed on the right side of the interior of the mounting frame 1. A drying assembly 7 is installed on the front side of the mounting frame 1. The drying assembly 7 is connected to the wiping assembly 9. A rolling assembly 2 is installed in the middle of the interior of the mounting frame 1. A reset assembly 4 and an extrusion assembly 5 are installed inside the mounting frame 1. The reset assembly 4 is connected to the extrusion assembly 5. The reset assembly 4 includes a support The support frame 41, the extrusion plate 42, the guide bar 43 and the return spring 44, the interior of the mounting frame 1 is fixed with two corresponding guide bars 43, the side of the guide bar 43 is slidably connected with the support frame 41, the side of the support frame 41 is fixed with the extrusion plate 42, and the side of the guide bar 43 is sleeved with two corresponding return springs 44, the adjacent ends of the two return springs 44 are respectively fixed to the front and rear sides of the support frame 41, and the other ends of the two return springs 44 are respectively fixed to the front and rear sides of the interior of the mounting frame 1, the extrusion assembly 5 includes a fixed plate 51, a second motor 52, a turntable 53 and a toggle plate 54, and the interior of the mounting frame 1 is fixed with two corresponding fixed plates 51, and a second motor 52 is installed on the right side of the fixed plate 51. A turntable 53 is fixed on the output shaft, and three corresponding toggle plates 54 are fixed on the circumferential surface of the turntable 53. The turntable 53 corresponds to the extrusion plate 42. The input end of the second motor 52 is electrically connected to the output end of the external control switch group. The rotating component 6 includes a fixed bar 61, a gear 62 and a rack 63. Two corresponding fixed bars 61 are fixed inside the mounting frame 1. Evenly distributed rotating holes are opened on the left side of the fixed bar 61. The internal rotation of the rotating hole is connected to the gear 62. The gear 62 is fixed on the side of the corresponding connecting frame 33. A rack 63 is fixed on the side of the support frame 41 away from the extrusion plate 42. The two racks 63 are respectively engaged with all the gears 62 above and below. The drying component 7 includes a heater 71, an air injection tee pipe 72, Connecting barrel 73 and air outlet box 74, a heater 71 is installed on the right end of the front side of the mounting frame 1, and an air injection tee 72 is fixed inside the air outlet of the heater 71. Two corresponding connecting barrels 73 are connected to the two ends of the air injection tee 72 away from the heater 71. An air outlet box 74 is fixed on the end surface of the connecting barrel 73. The connecting barrel 73 is communicated with the inner cavity of the air outlet box 74. The input end of the heater 71 is electrically connected to the output end of the external control switch group. The wiping assembly 9 includes a connecting plate 91 and a wiping sponge strip 92. Two corresponding connecting plates 91 are fixed on the right side of the interior of the mounting frame 1. A wiping sponge strip 92 is fixed on the side of the connecting plate 91. An opening is opened on the side of the connecting plate 91, and the air outlet box 74 is fixed inside the corresponding opening.The rolling assembly 2 includes a first motor 21, a rolling roller 22 and a gear ring 23. Two corresponding connecting holes are provided in the middle of the front side of the mounting frame 1. The rolling roller 22 is rotatably connected to the inside of the connecting hole. The front end of the surface of the rolling roller 22 is fixed with a gear ring 23. The two gear rings 23 are meshed with each other. The rear side of the mounting frame 1 is installed with a first motor 21. The output shaft of the first motor 21 is fixed to the rear end of the rolling roller 22 on the upper side. The input end of the first motor 21 is electrically connected to the output end of the external control switch group. The winding assembly 8 includes a fixing bar 81, a third motor 82 and a winding shaft 83. The right side of the mounting frame 1 is fixed with a fixed A third motor 82 is installed on the front side of the fixed bar 81. A winding shaft 83 is fixed to the output shaft of the third motor 82. The input end of the third motor 82 is electrically connected to the output end of the external control switch group. The winding assembly 8 is provided to drive the aluminum foil to be wound, the rolling assembly 2 is provided to roll the aluminum foil, the wiping assembly 9 is provided to wipe the cleaned aluminum foil, the drying assembly 7 is provided to dry the aluminum foil, the rotating assembly 6 is provided to drive all the connecting frames 33 to swing, the squeezing assembly 5 is provided to squeeze the two squeezing plates 42, and the reset assembly 4 is provided to drive the rack 62 to reset;

[0036] Flushing assembly 3: includes a connecting barrel 31, a connecting hose 32, a connecting frame 33 and an atomizing nozzle 34. Two corresponding fixing holes are provided on the front side of the mounting frame 1. The connecting barrel 31 is fixed inside the fixing holes. The circumferential surface of the connecting barrel 31 is provided with evenly distributed liquid outlets. The connecting hose 32 is fixed inside the liquid outlet. The connecting frame 33 is fixed on the end surface of the connecting hose 32 away from the connecting barrel 31. The atomizing nozzle 34 is installed inside the connecting frame 33. The reset assembly 4 is connected to all the connecting frames 33. The aluminum foil is flushed by setting the flushing assembly 3;

[0037] The input ends of the oil separator 15 and the solenoid valve 12 are both electrically connected to the output end of the external control switch group.

[0038] Among them: a water inlet tee pipe 13 is fixed at the rear end of the two connecting barrels 31, and a connecting flange ring is fixed on the surface of the water inlet tee pipe 13 away from the end of the two connecting barrels 31. The heated hot water is injected into the interior of the two connecting barrels 31 through the water inlet tee pipe 13.

[0039] A method for using a foil rolling mill for cleaning the surface of battery aluminum foil by blowing rolling oil, comprising the following steps:

[0040] S1: First, one end of the aluminum foil is connected to the reel 83. After the connection, the third motor 82 is started to rotate the reel 83 and drive the aluminum foil to move to the right. At this time, the first motor 21 is started and the two rolling rollers 22 are driven by the two meshing gear rings 23 to rotate and precisely roll the aluminum foil. During the rolling process, a lubricating film is formed by continuously supplying rolling oil.

[0041] S2: During the rolling process, the hot water heated in the external water storage tank is injected into the interior of the two connecting barrels 31 through the water inlet tee pipe 13, and then transported to the interior of the atomizing nozzles 34 installed in all the connecting frames 33 through the evenly distributed connecting hoses 32, forming a high-pressure atomized spray, which is sprayed onto the upper and lower sides of the aluminum foil. At the same time, the second motor 52 drives the turntable 53 to drive the toggle plate 54 to periodically push the extrusion plate 42, so that the support frame 41 moves back and forth along the guide bar 43. The meshing transmission of the rack 63 and the gear 62 realizes the swing spraying of the atomizing nozzle 34, completing the dynamic double-sided cleaning of the aluminum foil;

[0042] S3: The waste liquid mixed with the rolling oil is guided by the guide rod 10 to the oil separator 15 for oil-water separation. The separated rolling oil is recovered through the liquid outlet pipe 11 controlled by the solenoid valve 12, and the purified water flows back to the internal part of the external water storage tank for heating circulation;

[0043] S4: The cleaned aluminum foil moves to the right between the two wiping sponge strips 92 and is wiped by the two wiping sponge strips 92 to remove the residual oil film on the surface. Then, the heater 71 is started to transport hot air through the air injection three-way pipe 72 to the air outlet box 74 to perform hot air drying on both sides of the aluminum foil.

[0044] S5: The dried aluminum foil is wound to the right by the winding shaft 83 at a constant speed to complete the cleaning.

[0045] It is worth noting that the external control switch group disclosed in the above embodiments is provided with buttons corresponding to the first motor 21, the second motor 52, the third motor 82, the solenoid valve 12 and the heater 71. The first motor 21, the second motor 52, the third motor 82, the solenoid valve 12 and the heater 71 can be freely configured according to the actual application scenario.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A foil rolling mill for cleaning the surface of battery aluminum foil by blowing rolling oil, characterized in that: It includes a mounting frame (1) and a flushing assembly (3); Mounting frame (1): a liquid outlet (11) is fixed inside the liquid outlet provided on the left side, a solenoid valve (12) is installed on the circumferential surface of the liquid outlet pipe (11), an oil-liquid separator (15) is installed at the left end of the lower side of the interior of the mounting frame (1), two corresponding guide rods (10) are rotatably connected to the left side of the interior of the mounting frame (1), the liquid outlet of the oil-liquid separator (15) is connected to the liquid outlet pipe (11), a winding assembly (8) is installed on the right side of the mounting frame (1), a wiping assembly (9) is installed on the right side of the interior of the mounting frame (1), a drying assembly (7) is installed on the front side of the mounting frame (1), the drying assembly (7) is connected to the wiping assembly (9), a rolling assembly (2) is installed in the middle of the interior of the mounting frame (1), a reset assembly (4) and an extrusion assembly (5) are installed inside the mounting frame (1), and the reset assembly (4) and the extrusion assembly (5) are connected; A flushing assembly (3) comprising a connecting barrel (31), a connecting hose (32), a connecting frame (33) and an atomizing nozzle (34); two corresponding fixing holes are provided on the front side of the mounting frame (1); the connecting barrel (31) is fixed inside the fixing holes; the connecting barrel (31) is provided with evenly distributed liquid outlets on the circumferential surface; the connecting hose (32) is fixed inside the liquid outlet; the connecting frame (33) is fixed on the end surface of the connecting hose (32) away from the connecting barrel (31); the atomizing nozzle (34) is installed inside the connecting frame (33); the reset assembly (4) is connected to all the connecting frames (33); Wherein: the input ends of the oil-liquid separator (15) and the solenoid valve (12) are both electrically connected to the output end of an external control switch group.

2. A foil rolling mill for purging and cleaning rolling oil on the surface of battery aluminum foil according to claim 1, characterized in that: The reset assembly (4) comprises a support frame (41), an extrusion plate (42), a guide bar (43) and a reset spring (44); two corresponding guide bars (43) are fixed inside the installation frame (1); the side of the guide bar (43) is slidably connected to the support frame (41); the side of the support frame (41) is fixed with an extrusion plate (42); two corresponding reset springs (44) are sleeved on the side of the guide bar (43); adjacent ends of the two reset springs (44) are respectively fixed to the front and rear sides of the support frame (41); and the other ends of the two reset springs (44) are respectively fixed to the front and rear sides of the installation frame (1).

3. A foil rolling mill for purging and cleaning rolling oil on the surface of battery aluminum foil according to claim 2, characterized in that: The extrusion assembly (5) comprises a fixed plate (51), a second motor (52), a rotating disk (53) and a toggle plate (54); two corresponding fixed plates (51) are fixed inside the mounting frame (1); a second motor (52) is mounted on the right side of the fixed plate (51); a rotating disk (53) is fixed on the output shaft of the second motor (52); three corresponding toggle plates (54) are fixed on the circumferential surface of the rotating disk (53); the rotating disk (53) corresponds to the extrusion plate (42); and an input end of the second motor (52) is electrically connected to an output end of an external control switch group.

4. A foil rolling mill for purging and cleaning rolling oil on the surface of battery aluminum foil according to claim 2, characterized in that: The rotating assembly (6) comprises a fixing bar (61), a gear (62) and a rack (63). Two corresponding fixing bars (61) are fixed inside the mounting frame (1). Evenly distributed rotating holes are opened on the left side of the fixing bar (61). The gears (62) are rotatably connected inside the rotating holes. The gears (62) are fixed on the side of the corresponding connecting frame (33). A rack (63) is fixed on the side of the supporting frame (41) away from the extrusion plate (42). The two racks (63) are respectively engaged with all the gears (62) above and below.

5. The foil rolling mill for purging and cleaning the rolling oil on the surface of battery aluminum foil according to claim 1, characterized in that: The drying assembly (7) comprises a heater (71), an air injection three-way pipe (72), a connecting barrel (73) and an air outlet box (74). The heater (71) is installed at the right end of the front side of the mounting frame (1). The air outlet of the heater (71) is fixed with an air injection three-way pipe (72). Two ends of the air injection three-way pipe (72) away from the heater (71) are connected to two corresponding connecting barrels (73). An air outlet box (74) is fixed on the end surface of the connecting barrel (73). The connecting barrel (73) is communicated with the inner cavity of the air outlet box (74). The input end of the heater (71) is electrically connected to the output end of an external control switch group.

6. A foil rolling mill for purging and cleaning the rolling oil on the surface of battery aluminum foil according to claim 5, characterized in that: The wiping assembly (9) comprises a connecting plate (91) and a wiping sponge strip (92). Two corresponding connecting plates (91) are fixed on the right side of the interior of the mounting frame (1). The wiping sponge strip (92) is fixed on the side of the connecting plate (91). An opening is provided on the side of the connecting plate (91), and the air outlet box (74) is fixed inside the corresponding opening.

7. The foil rolling mill for purging and cleaning the rolling oil on the surface of battery aluminum foil according to claim 1, characterized in that: The rolling assembly (2) comprises a first motor (21), a rolling roller (22) and a gear ring (23); two corresponding connection holes are provided in the middle of the front side of the mounting frame (1); the rolling roller (22) is rotatably connected inside the connection hole; the front end of the surface of the rolling roller (22) is fixed with a gear ring (23); the two gear rings (23) are meshed with each other; the rear side of the mounting frame (1) is mounted with a first motor (21); the output shaft of the first motor (21) is fixed to the rear end of the rolling roller (22) on the upper side; the input end of the first motor (21) is electrically connected to the output end of an external control switch group.

8. The foil rolling mill for purging and cleaning the rolling oil on the surface of battery aluminum foil according to claim 1, characterized in that: The winding assembly (8) comprises a fixing bar (81), a third motor (82) and a winding shaft (83); the fixing bar (81) is fixed to the right side of the mounting frame (1); the third motor (82) is installed on the front side of the fixing bar (81); the winding shaft (83) is fixed on the output shaft of the third motor (82); and the input end of the third motor (82) is electrically connected to the output end of an external control switch group.

9. The foil rolling mill for purging and cleaning the rolling oil on the surface of battery aluminum foil according to claim 1, characterized in that: A water inlet tee pipe (13) is fixed to the rear ends of the two connecting barrels (31), and a connecting flange ring is fixed to the surface of the water inlet tee pipe (13) away from one end of the two connecting barrels (31).

10. The method for using a foil rolling mill for purging and cleaning rolling oil on the surface of battery aluminum foil according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, one end of the aluminum foil is connected to the reel (83), and after the connection, the third motor (82) is started to rotate the reel (83) and drive the aluminum foil to move to the right. At this time, the started first motor (21) drives the two rolling rollers (22) to rotate under the action of the two meshing gear rings (23) to perform precision rolling on the aluminum foil. During the rolling process, a lubricating film is formed by continuously supplying rolling oil; S2: During the rolling process, the hot water heated in the external water storage tank is injected into the interior of the two connecting barrels (31) through the water inlet three-way pipe (13), and then transported to the interior of the atomizing nozzles (34) installed in all the connecting frames (33) through the evenly distributed connecting hoses (32), forming a high-pressure atomized spray, which is sprayed to the upper and lower sides of the aluminum foil. At the same time, the second motor (52) drives the turntable (53) to drive the toggle plate (54) to periodically push the extrusion plate (42), so that the support frame (41) moves back and forth along the guide bar (43), and the meshing transmission of the rack (63) and the gear (62) realizes the swing spraying of the atomizing nozzle (34), completing the dynamic double-sided cleaning of the aluminum foil; S3: The waste liquid mixed with the rolling oil is guided to the oil-liquid separator (15) through the guide rod (10) for oil-water separation, and the separated rolling oil is recovered through the liquid outlet pipe (11) controlled by the electromagnetic valve (12), and the purified water flows back to the inside of the external water storage tank for heating circulation; S4: The cleaned aluminum foil moves to the right between the two wiping sponge strips (92) and is wiped by the two wiping sponge strips (92) to remove the residual oil film on the surface, and then the heater (71) is started to transport the hot air through the air injection three-way pipe (72) to the air outlet box (74) to perform double-sided hot air drying on the aluminum foil; S5: The dried aluminum foil is wound up at a uniform speed to the right by the winding shaft (83), and the cleaning is completed.

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