Powder calendering mechanism and pole piece production equipment

Abstract

The invention discloses a powder calendaring mechanism and pole piece production equipment, the powder calendaring mechanism comprises a mounting rack, a first calendaring roller, a second calendaring roller, a third calendaring roller, a first calendaring driving assembly, a second calendaring driving assembly, a third calendaring driving assembly and a trough assembly, the top end and the bottom end of the mounting rack are respectively provided with a top end opening and a bottom end opening; the first calendaring roller and the second calendaring roller are sequentially arranged in the mounting frame in the length direction of the mounting frame, a first calendaring gap is formed between the roller surfaces of the first calendaring roller and the second calendaring roller, the first calendaring driving assembly is used for driving the first calendaring roller to rotate, and the second calendaring driving assembly is used for driving the second calendaring roller to rotate; and the third calendering roller is arranged in the mounting frame and is positioned on one side of the top of the roller surface of the first calendering roller. According to the invention, the energy consumption is reduced, the production time is shortened, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to a powder calendering mechanism and pole piece production equipment. Background Art

[0002] Existing electrode production equipment generally includes an unwinding mechanism, a coating mechanism, an oven and a winding mechanism arranged in sequence along the walking path of the electrode. During operation, the electrode is first unwound by the unwinding mechanism, and then the electrode slurry is coated on one side of the electrode by the coating mechanism to form a coating. The coating can increase the energy density of the electrode. Since the electrode slurry is wet, the electrode is wet at this time. Then the electrode is heated and dried in an oven to remove excess moisture on the electrode, and finally the electrode is wound up by the winding mechanism.

[0003] In the above structure, since an oven is required to heat and dry the electrode, energy consumption is high and the production time is long, which reduces production efficiency and increases production costs. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a powder calendering mechanism and pole piece production equipment, which reduce energy consumption, shorten production time, improve production efficiency, and reduce production costs.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The first aspect of the present invention provides a powder calendering mechanism, comprising a mounting frame, a first calendering roller, a second calendering roller, a third calendering roller, a first calendering drive assembly, a second calendering drive assembly, a third calendering drive assembly and a trough assembly, wherein the top and bottom ends of the mounting frame are respectively provided with a top opening and a bottom opening, the first calendering roller and the second calendering roller are sequentially arranged in the mounting frame along the length direction of the mounting frame and a first calendering gap is provided between the roller surfaces of the two, the first calendering drive assembly is used to drive the first calendering roller to rotate, the second calendering drive assembly is used to drive the second calendering roller to rotate, and the third calendering drive assembly is used to drive the second calendering roller to rotate. The roller is arranged in the mounting frame and is located on one side of the top of the roller surface of the first calendering roller. The radius of the third calendering roller is smaller than the radius of the first calendering roller and there is a second calendering gap between the roller surface of the third calendering roller and the roller surface of the first calendering roller. The third calendering drive assembly is used to drive the third calendering roller to rotate. The trough assembly is arranged between the third calendering roller and the top of the roller surface of the first calendering roller. The bottom end of the trough assembly cooperates with the roller surface of the first calendering roller, and one side of the trough assembly cooperates with the roller surface of the third calendering roller. The trough assembly is provided with a trough, and the trough is connected to the second calendering gap.

[0007] As an optimal technical solution, it also includes a frame, a first back roller, a second back roller and a back roller drive assembly, the mounting frame is arranged at the top of the frame, the top of the frame is provided with a frame opening connected to the bottom end opening, one end of the frame is provided with a side end opening, the first back roller and the second back roller are respectively arranged in the mounting frame, the first calendering roller is located between the first back roller and the second calendering roller, the first back roller is located between the second back roller and the first calendering roller, the radius of the first back roller is smaller than the radius of the second back roller, the roller surface of the first back roller is in contact with the roller surface of the first calendering roller, the roller surface of the second back roller is in contact with the roller surface of the first back roller, and the back roller drive assembly is used to drive the first back roller to rotate.

[0008] As a preferred technical solution, two mounting positions are respectively provided on both sides of the mounting frame, and the two ends of the first calendering roller are respectively rotatably sleeved with two first calendering bearing seats, and the two first calendering bearing seats are respectively fixed in the two mounting positions, and the two ends of the second calendering roller are respectively rotatably sleeved with two second calendering bearing seats, and the two second calendering bearing seats are respectively slidably set in the two mounting positions, and the two ends of the first back roller are respectively rotatably sleeved with two first back roller bearing seats, and the two first back roller bearing seats are respectively slidably set in the two mounting positions, and the two ends of the second back roller are respectively rotatably sleeved with two second back roller bearing seats, and the two second back roller bearing seats are respectively slidably set in the two mounting positions, and the ends of the two second back roller bearing seats close to the first back roller are respectively connected to the two second back rollers. The end of a back roller bearing seat away from the first calendering roller is in contact; it also includes a first pressure drive assembly and a second pressure drive assembly, the first pressure drive assembly includes a first pressure drive member, the first pressure drive member is arranged at one end of the mounting frame, the ends of the two second back roller bearing seats away from the first back roller are provided with a first connecting block, the output end of the first pressure drive member passes through the first hole position at one end of the mounting frame and is connected to the first connecting block, the second pressure drive assembly includes a second pressure drive member, the second pressure drive member is arranged at the other end of the mounting frame, the ends of the two second calendering bearing seats away from the first calendering roller are provided with a second connecting block, the output end of the second pressure drive member passes through the second hole position at the other end of the mounting frame and is connected to the second connecting block.

[0009] As a preferred technical solution, the two ends of the third calendering roller are rotatably arranged on two gap adjustment components, and the two gap adjustment components are arranged opposite to each other. Two support plates are respectively provided on the inner walls on both sides of the top opening, and the support plates partially protrude from the top of the mounting frame. The two gap adjustment components are respectively connected to the tops of the two support plates, and the two gap adjustment components are used to drive the third calendering roller to move toward or away from the first calendering roller.

[0010] As a preferred technical solution, the gap adjustment assembly includes an adjustment plate, a lower fixed seat, a lifting slide and an upper fixed seat. The two ends of the third calendering roller are respectively rotatably set on the adjustment plates of the two gap adjustment assemblies. The lower fixed seat and the upper fixed seat are successively located above the third calendering roller and are both arranged parallel to the second calendering gap. The lower fixed seat is arranged at the top of the adjustment plate, the lifting slide is arranged at the top of the lower fixed seat, and the upper fixed seat is arranged at the top of the lifting slide. The upper fixed seats of the two gap adjustment assemblies are respectively connected to the tops of the two support plates.

[0011] As a preferred technical solution, the material trough assembly includes a first partition, two second partitions and two adjustment limit members. The two second partitions are spaced apart along the width direction of the mounting frame. The bottom ends of the two second partitions are both matched with the roller surface of the first calendering roller. The side of the two second partitions close to the third calendering roller is both matched with the roller surface of the third calendering roller. The top of the second partition is provided with a partition groove. The first partition is matched with the partition groove. There is a gap between the bottom end of the first partition and the roller surface of the first calendering roller. Two support plates are respectively provided on the inner walls on both sides of the top opening. The two ends of the first partition are respectively connected to the inner sides of the two support plates. The two adjustment limit members correspond to the two second partitions respectively. The adjustment limit members are arranged on the first partition and the corresponding second partition. The material trough is formed between the first partition, the two second partitions and the two adjustment limit members.

[0012] As a preferred technical solution, the adjustment limit member is detachably arranged on the first partition and the corresponding second partition; the bottom end of the adjustment limit member is provided with a first limiting groove and two second limiting grooves arranged oppositely, the first limiting groove cooperates with the first partition, the two second limiting grooves are both connected to the first limiting groove, and the two second limiting grooves respectively cooperate with the corresponding second partitions, the adjustment limit member is provided with a mounting hole, the mounting hole passes through the first limiting groove, and two mounting fasteners arranged oppositely are installed in the mounting hole, and the heads of the two mounting fasteners respectively abut against the two sides of the first partition.

[0013] As an optimal technical solution, the two ends of the first partition are respectively slidably connected to the inner sides of the two support plates, and two support seats are respectively provided on the inner sides of the two support plates. The support seats are located above the first partition, and two mounting grooves are respectively provided on the side close to the two support seats. The two adjusting screws respectively pass through the two mounting grooves and are respectively threadedly connected to the two threaded holes at the top of the first partition. The two adjusting screws can be rotated relative to the two support seats respectively, and two limit blocks are respectively sleeved on the outer periphery of the two adjusting screws. The two limit blocks are respectively in contact with the bottom ends of the two support seats, and the heads of the two adjusting screws are respectively located above the two support seats and in contact with the top ends of the two support seats respectively.

[0014] As a preferred technical solution, the first calendering drive assembly and the second calendering drive assembly both include a first calendering motor and a first calendering reducer, the first calendering reducer is arranged at the top of the support frame, the support frame is located on one side of the frame, the first calendering motor is arranged on the first calendering reducer, the output end of the first calendering motor is connected to the input end of the first calendering reducer, the output end of the first calendering reducer of the first calendering drive assembly is connected to one end of the first calendering roller, and the output end of the first calendering reducer of the second calendering drive assembly is connected to one end of the second calendering roller; the third calendering drive assembly includes a second calendering motor, a second calendering reducer and a transmission rod. The second calendering reducer is arranged on one side of the mounting frame, the second calendering motor is arranged on the second calendering reducer, the output end of the second calendering motor is connected to the input end of the second calendering reducer, the output end of the second calendering reducer is connected to one end of the transmission rod, the other end of the transmission rod extends into the mounting frame and is connected to one end of the third calendering roller; the back roller drive assembly includes a back roller motor and a back roller reducer, the back roller reducer is arranged at the top end of the support frame, the back roller motor is arranged on the back roller reducer, the output end of the back roller motor is connected to the input end of the back roller reducer, and the output end of the back roller reducer is connected to one end of the first back roller.

[0015] The second aspect of the present invention provides an electrode production device, including a unwinding mechanism and a winding mechanism, and is characterized in that it also includes the powder calendering mechanism described in the above technical solution, and the powder calendering mechanism is arranged between the unwinding mechanism and the winding mechanism along the walking path of the electrode.

[0016] The beneficial effects of the present invention are as follows: the present invention can realize the transfer of electrode powder to one side of the electrode sheet to form a coating by setting the first calendering roller, the second calendering roller, the third calendering roller, the first calendering drive assembly, the second calendering drive assembly and the third calendering drive assembly. Since the electrode powder is dry, after the electrode powder is transferred to one side of the electrode sheet by the powder calendering mechanism of the present invention to form a coating, the electrode sheet is dry, so there is no need to heat and dry the electrode sheet in an oven, which reduces energy consumption, reduces production time, improves production efficiency, reduces production costs, simplifies the structure of the equipment, and reduces the equipment's footprint. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 This is a schematic structural diagram from a first angle of a powder calendering mechanism provided by one embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic structural diagram of the powder calendering mechanism at a second angle;

[0020] Figure 3 yes Figure 1 A schematic front view of the powder calendering mechanism shown;

[0021] Figure 4 yes Figure 1 A schematic cross-sectional view of the powder calendering mechanism shown;

[0022] Figure 5 yes Figure 1 Schematic diagram of the structure of the powder calendering mechanism, including the frame, mounting frame, first calendering roller, second calendering roller, third calendering roller, first calendering drive assembly, second calendering drive assembly, third calendering drive assembly, two gap adjustment assemblies, trough assembly, first back roller, second back roller, back roller drive assembly, first pressure drive assembly, second pressure drive assembly, and pass roller;

[0023] Figure 6 yes Figure 1 A schematic structural diagram of a first angle of the powder calendering mechanism, including the first calendering roller, the second calendering roller, the third calendering roller, the first calendering drive assembly, the second calendering drive assembly, the third calendering drive assembly, two gap adjustment assemblies, the trough assembly, the first back roller, the second back roller, the back roller drive assembly, the first pressure drive assembly, and the second pressure drive assembly;

[0024] Figure 7 yes Figure 6A schematic structural diagram of a second angle of the first calendering roller, the second calendering roller, the third calendering roller, the first calendering drive assembly, the second calendering drive assembly, the third calendering drive assembly, two gap adjustment assemblies, the trough assembly, the first back roller, the second back roller, the back roller drive assembly, the first pressure drive assembly, and the second pressure drive assembly;

[0025] Figure 8 yes Figure 1 A schematic structural diagram of the first calendering roller, the first calendering drive assembly, the third calendering roller, the two gap adjustment assemblies and the trough assembly of the powder calendering mechanism shown;

[0026] Figure 9 yes Figure 8 A schematic structural diagram of the first angle of the two gap adjustment components and the trough component shown;

[0027] Figure 10 yes Figure 9 A schematic structural diagram of the second angle of the two gap adjustment components and the trough component shown;

[0028] Figure 11 yes Figure 9 An exploded schematic diagram of the first baffle, two second baffles and two adjustment limit members of the trough assembly is shown.

[0029] Reference numerals;

[0030] 10. Rack; 11. Rack opening;

[0031] 20. Mounting frame; 21. Top opening; 22. Bottom opening; 23. Mounting position; 231. First lower slide rail; 232. First lower slider; 233. First upper slide rail; 234. First upper slider; 235. Second lower slide rail; 236a. Second lower slider; 236b. Third lower slider; 237. Second upper slide rail; 238a. Second upper slider; 238b. Third upper slider; 26. Support plate;

[0032] 30. First calendering roller; 31. First calendering bearing seat;

[0033] 40. Second calendering roller; 41. Second calendering bearing seat; 42. Second connecting block;

[0034] 50. The third calendering roller;

[0035] 60. First calendering drive assembly; 61. First calendering motor; 62. First calendering reducer; 63. First reducer base;

[0036] 70. Third calendering drive assembly; 71. Second calendering motor; 72. Second calendering reducer; 73. Second reducer base; 74. Transmission rod;

[0037] 80. First back roller; 81. First back roller bearing seat;

[0038] 90. Second back roller; 91. Second back roller bearing seat; 92. First connecting block;

[0039] 100, back roller drive assembly; 1001, back roller motor; 1002, back roller reducer; 1003, back roller reducer base;

[0040] 110. First pressure-driving assembly; 1101. First pressure-driving member;

[0041] 120. Second pressure-driving assembly; 1201. Second pressure-driving member;

[0042] 130, gap adjustment assembly; 1301, adjustment plate; 1302, lower fixed seat; 1303, lifting slide; 1304, upper fixed seat; 1305, calendering fixed seat;

[0043] 140. Trough assembly; 1401. Trough; 1402. First partition; 1403. Second partition; 14031. Partition groove; 14032. First arc surface; 14033. Second arc surface; 1404. Adjustment stopper; 14041. First limiting groove; 14042. Second limiting groove; 14043. Mounting hole; 14044. Mounting fastener; 1405. Support base; 14051. Mounting groove; 1406. Adjusting screw; 14061. Adjusting screw head; 1407. Limit block;

[0044] 150, roller; 1501, U-shaped seat;

[0045] 160. Support frame; 200. Pole piece. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0047] Please refer to Figures 1 to 4A powder calendering mechanism provided by one embodiment of the present invention includes a frame 10, a mounting frame 20 arranged at the top of the frame 10, a first calendering roller 30, a second calendering roller 40, a third calendering roller 50, a first calendering drive assembly 60, a second calendering drive assembly (not shown in the figure), a third calendering drive assembly 70 and a trough assembly 140.

[0048] The top and bottom ends of the mounting frame 20 are respectively provided with a top opening 21 and a bottom opening 22, which are connected to the interior of the mounting frame 20. The top of the frame 10 is provided with a frame opening 11, which is connected to the bottom opening 22 and the interior of the frame 10. One end of the frame 10, such as the right end, is provided with a side opening, which is connected to the interior of the frame 10. The top opening 21, the bottom opening 22, the frame opening 11, and the side opening are all used to allow the electrode 200 to pass through. The first calendering roller 30 and the second calendering roller 40 are arranged in sequence from left to right along the length direction of the mounting frame 20, and a first calendering gap is defined between the roller surfaces of the first calendering roller 30 and the second calendering roller 40. The first calendering drive assembly 60 is used to drive the first calendering roller 30 to rotate. The second calendering drive assembly is used to drive the second calendering roller 40 to rotate. In this embodiment, the radius of the first calendering roller 30 and the radius of the second calendering roller 40 are equal. The third calendering roller 50 is disposed within the mounting frame 20 and is located to one side of the top of the first calendering roller 30, for example, to the left of the top of the first calendering roller 30. The third calendering roller 50 is adjacent to the top opening 21. In this embodiment, the angle between the line connecting the center of the first calendering roller 30 and the top of the first calendering roller 30 and the line connecting the center of the first calendering roller 30 and the center of the third calendering roller 50 is preferably 30 degrees. It is understood that other angles are also possible. The radius of the third calendering roller 50 is smaller than the radius of the first calendering roller 30, and a second calendering gap is defined between the roll surface of the third calendering roller 50 and the roll surface of the first calendering roller 30. The third calendering drive assembly 70 is used to drive the third calendering roller 50 to rotate. The trough assembly 140 is arranged between the third calendering roller 50 and the top of the roller surface of the first calendering roller 30. The bottom end of the trough assembly 140 cooperates with the roller surface of the first calendering roller 30, and one side of the trough assembly 140 cooperates with the roller surface of the third calendering roller 50. The trough assembly 140 is provided with a trough 1401, and the trough 1401 is connected to the second calendering gap.

[0049] During operation, the first calendering roller 30 is driven to rotate by the first calendering drive component 60, the second calendering roller 40 is driven to rotate by the second calendering drive component, and the third calendering roller 50 is driven to rotate by the third calendering drive component 70. The rotation direction of the first calendering roller 30 is opposite to the rotation direction of the third calendering roller 50 and the second calendering roller 40. For example, the first calendering roller 30 rotates in the counterclockwise direction, and the third calendering roller 50 and the second calendering roller 40 rotate in the clockwise direction. At the same time, a speed difference is formed between the first calendering roller 30 and the third calendering roller 50. Then, the electrode powder is placed in the material trough 1401. The electrode powder can move toward the second calendering gap under the rotation of the first calendering roller 30. When the electrode powder reaches the second calendering gap, the electrode powder can be calendered by the third calendering roller 50 and the first calendering roller 30. Since the radius of the third calendering roller 50 is smaller than The radius of the first calendering roller 30, and a speed difference is formed between the third calendering roller 50 and the first calendering roller 30, so that the electrode powder can adhere to the roller surface of the first calendering roller 30 during the calendering of the third calendering roller 50 and the first calendering roller 30, and when the electrode piece 200 unwound by the unwinding mechanism enters the first calendering gap from above the first calendering gap through the top opening 21, the electrode piece 200 can be calendered by the first calendering roller 30 and the second calendering roller 40, so that the electrode powder attached to the roller surface of the first calendering roller 30 can be transferred to one side of the electrode piece 200, so that a coating can be formed on one side of the electrode piece 200, and then the electrode piece 200 comes out of the first calendering gap, then passes through the bottom opening 22, the frame opening 11 and enters the frame 10, and then passes through the side opening at one end of the frame 10, and finally is wound up by the winding mechanism, so that the production of the electrode piece 200 is completed.

[0050] The present invention provides a first calendering roller 30, a second calendering roller 40, a third calendering roller 50, a first calendering drive assembly 60, a second calendering drive assembly and a third calendering drive assembly 70, which can realize the transfer of electrode powder to one side of the electrode 200 to form a coating. Since the electrode powder is dry, after the electrode powder is transferred to one side of the electrode 200 by the powder calendering mechanism of the present invention to form a coating, the electrode 200 is dry, so there is no need to heat and dry the electrode 200 in an oven, which reduces energy consumption, reduces production time, improves production efficiency, reduces production costs, simplifies the structure of the equipment, and reduces the equipment's footprint.

[0051] The present invention further includes a first backing roller 80, a second backing roller 90, and a backing roller drive assembly 100. The first backing roller 80 and the second backing roller 90 are respectively disposed within the mounting frame 20. The first calendering roller 30 is positioned between the first backing roller 80 and the second calendering roller 40. The first backing roller 80 is positioned between the second backing roller 90 and the first calendering roller 30. The radius of the first backing roller 80 is smaller than that of the second backing roller 90. The surface of the first backing roller 80 contacts the surface of the first calendering roller 30, and the surface of the second backing roller 90 contacts the surface of the first backing roller 80. The backing roller drive assembly 100 is used to drive the first backing roller 80 to rotate. In actual application, the rotation direction of the first back roller 80 is opposite to that of the first calendering roller 30. The rotation of the first back roller 80 can drive the second back roller 90 to rotate synchronously in the opposite direction. The first back roller 80 can provide support for the first calendering roller 30, thereby avoiding arc deformation of the roller surface of the first calendering roller 30. The second back roller 90 can provide support for the first back roller 80, thereby avoiding arc deformation of the first back roller. In this way, the uniformity of the pressure for calendering the electrode 200 can be ensured, and the consistency of the electrode 200 is better.

[0052] Combine Figures 5 to 8 As shown, in this embodiment, two mounting positions 23 are provided on either side of the mounting frame 20, and the mounting positions 23 are connected to the interior of the mounting frame 20. Two first calendering bearing seats 31 are rotatably mounted on each end of the first calendering roller 30. The two first calendering bearing seats 31 are fixedly mounted in the two mounting positions 23, respectively, and provide rotational support for the first calendering roller 30 via the two first calendering bearing seats 31. Two second calendering bearing seats 41 are rotatably mounted on each end of the second calendering roller 40. The two second calendering bearing seats 41 are slidably mounted in the two mounting positions 23, respectively, and provide rotational support for the second calendering roller 40 via the two second calendering bearing seats 41. Two first backing roller bearing seats 81 are rotatably mounted on each end of the first backing roller 80. The two first backing roller bearing seats 81 are slidably mounted in the two mounting positions 23, respectively, and provide rotational support for the first backing roller 80 via the two first backing roller bearing seats 81. Two second back roller bearing seats 91 are rotatably mounted at both ends of the second back roller 90. The two second back roller bearing seats 91 are slidably mounted in the two mounting positions 23. The ends of the two second back roller bearing seats 91 close to the first back roller 80 are in contact with the ends of the two first back roller bearing seats 81 away from the first calendering roller 30. The two second back roller bearing seats 91 can provide rotational support for the second back roller 90.

[0053] The bottom and top ends of the first rolling bearing seat 31 are fixedly mounted on the bottom and top ends of the corresponding mounting positions 23, respectively. A first lower slide rail 231 and a first upper slide rail 233 corresponding to the corresponding second rolling bearing seat 41 are respectively provided on the bottom and top ends of the mounting position 23. The first lower slide rail 231 is slidably engaged with a first lower slider 232, and the first upper slide rail 233 is slidably engaged with a first upper slider 234. The first lower slider 232 and the first upper slider 234 are respectively mounted on the bottom and top ends of the corresponding second rolling bearing seat 41. The bottom and top of the mounting position 23 are respectively provided with a second lower rail 235 and a second upper rail 237 corresponding to the corresponding first back roller bearing seat 81 and second back roller bearing seat 91. The second lower rail 235 is slidably engaged with a second lower slider 236a and a third lower slider 236b, while the second upper rail 237 is slidably engaged with a second upper slider 238a and a third upper slider 238b. The second lower slider 236a and the second upper slider 238a are respectively arranged at the bottom and top ends of the corresponding first back roller bearing seat 81, while the third lower slider 236b and the third upper slider 238b are respectively arranged at the bottom and top ends of the corresponding second back roller bearing seat 91. The number of the first lower slider 232, the first upper slider 233, the second lower slider 236a, the second upper slider 238a, the third lower slider 236b, and the third upper slider 238b can be increased according to actual conditions.

[0054] The first calendering drive assembly 60 and the second calendering drive assembly each include a first calendering motor 61 and a first calendering reducer 62. The first calendering reducer 62 is arranged at the top of the support frame 160 through the first reducer seat 63. The support frame 160 is located on one side of the frame 10, for example, at the rear of the frame 10. The first calendering motor 61 is arranged on the first calendering reducer 62. The output end of the first calendering motor 61 is connected to the input end of the first calendering reducer 62. The output end of the first calendering reducer 62 of the first calendering drive assembly 60 is connected to one end of the first calendering roller 30 through, for example, a universal coupling. The output end of the first calendering reducer 62 of the second calendering drive assembly is connected to one end of the second calendering roller 40 through, for example, a universal coupling. The first calendering motor 61 is used to drive the corresponding large calendering roller to rotate through the first calendering reducer 62.

[0055] The third calendering drive assembly includes a second calendering motor 71, a second calendering reducer 72, and a transmission rod 74. The second calendering reducer 72 is disposed on one side of the mounting frame 20 via a second reducer base 73. The second calendering motor 71 is disposed on the second calendering reducer 72. The output end of the second calendering motor 71 is connected to the input end of the second calendering reducer 72. The output end of the second calendering reducer 72 is connected to one end of the transmission rod 74 via, for example, a universal joint. The other end of the transmission rod 74 extends into the mounting frame 20 through a through hole on one side of the mounting frame 20 and is connected to one end of the third calendering roller 50. The second calendering motor 71 is used to drive the third calendering roller 50 to rotate via the second calendering reducer 72 and the transmission rod 74.

[0056] The back roller drive assembly 100 includes a back roller motor 1001 and a back roller reducer 1002. The back roller reducer 1002 is mounted on the top of the support frame 160 via a back roller reducer mount 1003. The back roller motor 1001 is mounted on the back roller reducer 1002. The output end of the back roller motor 1001 is connected to the input end of the back roller reducer 1002. The output end of the back roller reducer 1002 is connected to one end of the first back roller 80 via, for example, a universal joint. The back roller motor 1001 is used to drive the first back roller 80 to rotate via the back roller reducer 1002.

[0057] Furthermore, the present invention also includes a first pressure drive assembly 110 and a second pressure drive assembly 120. The first pressure drive assembly 110 includes a first pressure drive member 1101, which is arranged at one end of the mounting frame 20. The ends of the two second back roller bearing seats 91 away from the first back roller 80 are provided with a first connecting block 92. The output end of the first pressure drive member 1101 passes through the first hole at one end of the mounting frame 20 and is connected to the first connecting block 92. The first pressure drive member 1101 drives the first connecting block 92 to move toward the first calendering roller 30, thereby applying pressure to the first connecting block 92 and the two second back roller bearing seats 91, thereby applying pressure to the first calendering roller 30 through the second back roller 90 and the first back roller 80. The second pressure drive assembly 120 includes a second pressure drive member 1201, which is arranged at the other end of the mounting frame 20. The two second calendering bearing seats 41 are provided with a second connecting block 42 at one end away from the first calendering roller 30. The output end of the second pressure drive member 1201 passes through the second hole position at the other end of the mounting frame 20 and is connected to the second connecting block 42. The second pressure drive member 1201 drives the second connecting block 42 to move toward the first calendering roller 30, so that pressure can be applied to the second connecting block 42 and the two second calendering bearings 41, thereby applying pressure to the second calendering roller 40. By applying pressure to the first calendering roller 30 and the second calendering roller 40, pressure can be provided for calendering the pole piece 200.

[0058] In this embodiment, there are two first pressure-driving members 1101 and two second pressure-driving members 1201, respectively. The two first pressure-driving members 1101 and the two second pressure-driving members 1201 are spaced apart in a front-to-rear manner along the width direction of the mounting frame 20. The number of first holes corresponds to the number of first pressure-driving members 1101, and the number of second holes corresponds to the number of second pressure-driving members 1201. It is understood that the number of first pressure-driving members 1101 and second pressure-driving members 1201 can be increased according to actual conditions. Both the first pressure-driving members 1101 and the second pressure-driving members 1201 are hydraulic cylinders.

[0059] Combine Figures 8 to 11 As shown, both ends of the third calendering roller 50 are rotatably arranged on two gap adjustment components 130, and the two gap adjustment components 130 are arranged opposite to each other. Two support plates 26 are respectively provided on the inner walls on both sides of the top opening 21. The support plates 26 partially extend into the mounting frame 20, and the support plates 26 partially protrude from the top of the mounting frame 20. The two gap adjustment components 130 are respectively connected to the top ends of the two support plates 26. The two gap adjustment components 130 are used to drive the third calendering roller 50 to move toward or away from the first calendering roller 30, so as to adjust the width of the second calendering gap.

[0060] The gap adjustment assembly 130 includes an adjustment plate 1301, a lower fixed seat 1302, a lifting slide 1303, and an upper fixed seat 1304. The two ends of the third calendering roller 50 are rotatably mounted on the adjustment plates 1301 of the two gap adjustment assemblies 130. Specifically, the adjustment plate 1301 is provided with a first mounting hole. A calendering fixed seat 1305 is provided on a side of the adjustment plate 1301 away from the center of the third calendering roller 50. The calendering fixed seat 1305 is provided with a second mounting hole connected to the first mounting hole. The two ends of the third calendering roller 50 pass through the first mounting holes of the two gap adjustment assemblies 130 and are rotatably mounted in the second mounting holes of the two gap adjustment assemblies 130. The second mounting holes are provided with rotating bearings. The rotating bearings of the two gap adjustment assemblies 130 are respectively sleeved on the outer circumferences of the two ends of the third calendering roller 50. The rotating bearings provide rotational support for the third calendering roller 50. The lower fixed seat 1302 and the upper fixed seat 1304 are successively located above the third calendering roller 50 and are both arranged parallel to the second calendering gap. In this embodiment, the lower fixed seat 1302 and the upper fixed seat 1304 are both arranged to be tilted upward in the direction close to the second calendering roller 40. The angle between the lower fixed seat 1302 and the upper fixed seat 1304 and the horizontal line is 30 degrees. The lower fixed seat 1302 is arranged at the top of the adjustment plate 1301, and the lifting slide 1303 is arranged at the top of the lower fixed seat 1302. The lifting slide 1303 is an existing manual lifting slide. The structure and working principle of the lifting slide are not described here. The lifting slide 1303 partially protrudes from the top of the mounting frame 20. The upper fixed seat 1304 is located above the mounting frame 20. The upper fixed seat 1304 is arranged at the top of the lifting slide 1303. The upper fixed seats 1304 of the two gap adjustment assemblies 130 are respectively connected to the tops of the two support plates 26. The lifting slides 1303 of the two gap adjustment components 130 respectively drive the corresponding lower fixed seat 1302 and the adjustment plate 1301 to move toward or away from the first calendering roller 30, thereby driving the third calendering roller 50 to move toward or away from the first calendering roller 30.

[0061] In this embodiment, the adjustment plate 1301 and the lower fixing seat 1302 are preferably formed in one piece to facilitate manufacturing.

[0062] The trough assembly 140 includes a first baffle 1402, two second baffles 1403, and two adjustment limiters 1404. The two second baffles 1403 are spaced apart in a front-to-rear arrangement along the width direction of the mounting frame 20. The bottom ends of the two second baffles 1403 mate with the roller surface of the first calendering roller 30, and the sides of the two second baffles 1403 near the third calendering roller 50 mate with the roller surface of the third calendering roller 50. In this embodiment, the bottom ends of the second baffles 1403 are provided with a first curved surface 14032, which mates with the roller surface of the first calendering roller 30. The side of the second baffles 1403 near the third calendering roller 50 is provided with a second curved surface 14033, which mates with the roller surface of the third calendering roller 50. The top ends of the second baffles 1403 are provided with a baffle groove 14031, and the first baffles 1402 mate with the baffle groove 14031. A gap exists between the bottom end of the first separator 1402 and the roller surface of the first calendering roller 30. Two support plates 26 are respectively provided on the inner walls of the top opening 21. The ends of the first separator 26 are connected to the inner sides of the two support plates 26. An adjustment stopper 1404 is cross-shaped, and the two adjustment stoppers 1404 correspond to the two second separators 1403 respectively. The adjustment stoppers 1404 are provided on the first separator 1402 and the corresponding second separator 1403. The material trough 1401 is formed between the first separator 1402, the two second separators 1403, and the two adjustment stoppers 1404.

[0063] In this embodiment, the adjustment limit member 1404 is detachably arranged on the first partition 1402 and the corresponding second partition 1403. Specifically, the bottom end of the adjustment limit member 1404 is provided with a first limiting groove 14041 and two second limiting grooves 14042 arranged opposite to each other on the left and right. The second limiting groove 14042 is vertically arranged with the first limiting groove 14041. The two second limiting grooves 14042 are both connected to the first limiting groove 14041. The depth of the second limiting groove 14042 is less than the depth of the first limiting groove 14041. The two second limiting grooves 1402 respectively cooperate with the corresponding second partitions 1403. The adjustment limit member 1404 is provided with a mounting hole 14043. The mounting hole 14043 passes through the first limiting groove 14041. The mounting hole 14043 is a threaded hole. Two mounting fasteners 14044, such as jackscrews, are installed in the mounting hole 14043. The heads of the two mounting fasteners 14044 respectively abut against the two sides of the first partition 1402, thereby fixing the adjustment limit member 1404 and the first partition 1402 together. In this embodiment, there are two mounting holes 14043, and the second limiting groove 14042 is located between the two mounting holes 14043. It can be understood that the number of mounting holes 14043 can be set according to actual conditions.

[0064] The above structure can be used to adjust the length of the material trough 1401, so as to adapt to pole pieces 200 of different widths and has a wide range of applications. For example, when the length of the material trough 1401 needs to be increased, first screw the installation fastener 14044 to separate the head of the installation fastener 14044 from the corresponding side of the first partition 1402, and then move the adjustment limit member 1404 located in the front and the second partition 1403 located in the front together along the first partition 1402 in the direction away from the center of the first partition 1402, that is, move forward to a predetermined position, and then move the adjustment limit member 1404 located in the rear and the second partition 1402 located in the rear together along the first partition 1402 in the direction away from the center of the first partition 1402, that is, move backward to a predetermined position, so that the distance between the two second partitions 1403 is increased, and the length of the material trough 14 is increased, and then screw the installation fastener 14044 so that the head of the installation fastener 14044 is against the corresponding side of the first partition 1402. When the length of the material trough 1401 needs to be reduced, first screw the installation fastener 14044 to separate the head of the installation fastener 14044 from the corresponding side of the first partition 1402, and then move the adjustment limit piece 1404 located in the front and the second partition 1403 located in the front along the first partition 1402 toward the center of the first partition 1402, that is, move backward to a predetermined position, and then move the adjustment limit piece 1404 located in the rear and the second partition 1403 located in the rear along the first partition 1402 toward the center of the first partition 1402, that is, move forward to a predetermined position, so that the distance between the two second partitions 1403 is reduced, and the length of the material trough 1401 is reduced, and then screw the installation fastener 14044 so that the head of the installation fastener 14044 is against the corresponding side of the first partition 1402.

[0065] Furthermore, both ends of the first partition 1402 are slidably connected to the inner sides of the two support plates 26 via conventional slide rails and sliders that slidably cooperate with the slide rails. Two support seats 1405 are respectively provided on the inner sides of the two support plates 26. The support seats 1405 are located above the first partition 1402. Two mounting grooves 14051 are respectively provided on the adjacent sides of the two support seats 1405. Two adjusting screws 1406 respectively pass through the two mounting grooves 14051 and are respectively threadedly connected to the two threaded holes at the top of the first partition 1402. The two adjusting screws 1406 can rotate relative to the two support seats 1405. Two limit blocks 1407 are respectively provided on the outer circumference of the two adjusting screws 1406, and the two limit blocks 1407 are respectively in contact with the bottom ends of the two support seats 1405. The heads 14061 of the two adjusting screws 1406 are respectively located above the two support seats 1405 and are respectively in contact with the top ends of the two support seats 1405. The adjusting screws 1406 can be limited by the limit blocks 1407 and the heads 14061 of the adjusting screws 1406. By rotating the heads 14061 of the two adjusting screws 1406 in a clockwise direction or in a counterclockwise direction, the two adjusting screws 1406 can drive the first partition 1402 to move up and down relative to the two support plates 26. The up and down movement of the first partition 1402 can drive the two adjustment limit members 1404 to move up and down. When the first partition 1402 drives the two adjustment limit members 1404 to move upward, the gap between the top of the first partition 1402 and the roller surface of the first calendering roller 30 is The distance increases, so the depth of the material trough 1401 becomes deeper. When the first partition 1402 drives the two adjustment limit members 1404 to move downward, the distance between the top of the first partition 1402 and the roller surface of the first calendering roller 30 decreases, so the depth of the material trough 1401 becomes shallower. In this way, the depth of the material trough 1401 can be adjusted. By adjusting the depth of the material trough 1401, the height of the electrode powder placed in the material trough 1401 can be controlled, so that the electrode powder can smoothly enter the second calendering gap to avoid blockage.

[0066] Furthermore, the present invention also includes a roller 150, which is arranged in the frame 10 and located below the first calendering gap. After the pole piece 200 enters the frame 10, it first passes over the roller 150, then passes through the side opening at one end of the frame 10, such as the right end, and finally is wound up by the winding mechanism. The pole piece 200 can be supported and guided by the roller 150.

[0067] In this embodiment, a U-shaped seat 1501 is provided on the inner wall of one side of the frame 10, and the roller 150 is located in the U-shaped seat 1501. The two ends of the roller 150 are rotatably set on the inner walls of the U-shaped seat 1501 at both ends through two roller bearing seats. The set U-shaped seat 1501 can provide installation support for the roller 150.

[0068] The present invention also provides an electrode production device, including an unwinding mechanism for unwinding the electrode 200, a winding mechanism for winding the electrode 200 and the above-mentioned powder calendering mechanism, and the powder calendering mechanism is arranged between the unwinding mechanism and the winding mechanism along the walking path of the electrode 200.

[0069] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A powder calendering mechanism, characterized in that: The present invention comprises a mounting frame, a first calendering roller, a second calendering roller, a third calendering roller, a first calendering drive assembly, a second calendering drive assembly, a third calendering drive assembly and a trough assembly. The top and bottom ends of the mounting frame are respectively provided with a top opening and a bottom opening. The first calendering roller and the second calendering roller are sequentially arranged in the mounting frame along the length direction of the mounting frame, and a first calendering gap is provided between the roller surfaces of the two. The first calendering drive assembly is used to drive the first calendering roller to rotate, the second calendering drive assembly is used to drive the second calendering roller to rotate, and the third calendering roller is arranged in the mounting frame. And it is located on one side of the top of the roller surface of the first calendering roller, the radius of the third calendering roller is smaller than the radius of the first calendering roller and there is a second calendering gap between the roller surface of the third calendering roller and the roller surface of the first calendering roller, the third calendering drive assembly is used to drive the third calendering roller to rotate, the material trough assembly is arranged between the third calendering roller and the top of the roller surface of the first calendering roller, the bottom end of the material trough assembly cooperates with the roller surface of the first calendering roller, one side of the material trough assembly cooperates with the roller surface of the third calendering roller, the material trough assembly is provided with a material trough, and the material trough is connected to the second calendering gap.

2. The powder calendering mechanism according to claim 1, characterized in that: It also includes a frame, a first back roller, a second back roller and a back roller drive assembly, the mounting frame is arranged at the top of the frame, the top of the frame is provided with a frame opening connected to the bottom end opening, one end of the frame is provided with a side end opening, the first back roller and the second back roller are respectively arranged in the mounting frame, the first calendering roller is located between the first back roller and the second calendering roller, the first back roller is located between the second back roller and the first calendering roller, the radius of the first back roller is smaller than the radius of the second back roller, the roller surface of the first back roller is in contact with the roller surface of the first calendering roller, the roller surface of the second back roller is in contact with the roller surface of the first back roller, and the back roller drive assembly is used to drive the first back roller to rotate.

3. The powder calendering mechanism according to claim 2, characterized in that: Two mounting positions are respectively provided on both sides of the mounting frame, and two first calendering bearing seats are rotatably mounted on both ends of the first calendering roller, and the two first calendering bearing seats are fixedly arranged in the two mounting positions respectively, and two second calendering bearing seats are rotatably mounted on both ends of the second calendering roller, and the two second calendering bearing seats are slidably arranged in the two mounting positions respectively, and two first back roller bearing seats are rotatably mounted on both ends of the first back roller, and the two first back roller bearing seats are slidably arranged in the two mounting positions respectively, and two second back roller bearing seats are rotatably mounted on both ends of the second back roller, and the two second back roller bearing seats are slidably arranged in the two mounting positions respectively, and one end of the two second back roller bearing seats close to the first back roller is in contact with one end of the two first back roller bearing seats away from the first calendering roller respectively; It also includes a first pressure drive assembly and a second pressure drive assembly, the first pressure drive assembly including a first pressure drive member, the first pressure drive member is arranged at one end of the mounting frame, the two second back roller bearing seats are provided with a first connecting block at one end away from the first back roller, the output end of the first pressure drive member passes through the first hole at one end of the mounting frame and is connected to the first connecting block, the second pressure drive assembly includes a second pressure drive member, the second pressure drive member is arranged at the other end of the mounting frame, the two second calendering bearing seats are provided with a second connecting block at one end away from the first calendering roller, the output end of the second pressure drive member passes through the second hole at the other end of the mounting frame and is connected to the second connecting block.

4. The powder calendering mechanism according to claim 1, characterized in that: The two ends of the third calendering roller are rotatably arranged on two gap adjustment components, and the two gap adjustment components are arranged opposite to each other. Two support plates are respectively provided on the inner walls on both sides of the top opening, and the support plates partially protrude from the top of the mounting frame. The two gap adjustment components are respectively connected to the tops of the two support plates, and the two gap adjustment components are used to drive the third calendering roller to move toward or away from the first calendering roller.

5. The powder calendering mechanism according to claim 4, characterized in that: The gap adjustment assembly includes an adjustment plate, a lower fixed seat, a lifting slide and an upper fixed seat. The two ends of the third calendering roller are rotatably set on the adjustment plates of the two gap adjustment assemblies. The lower fixed seat and the upper fixed seat are successively located above the third calendering roller and are both arranged parallel to the second calendering gap. The lower fixed seat is arranged at the top of the adjustment plate, the lifting slide is arranged at the top of the lower fixed seat, and the upper fixed seat is arranged at the top of the lifting slide. The upper fixed seats of the two gap adjustment assemblies are respectively connected to the tops of the two support plates.

6. The powder calendering mechanism according to claim 1, characterized in that: The material trough assembly includes a first partition, two second partitions and two adjustment limit members. The two second partitions are arranged at intervals along the width direction of the mounting frame. The bottom ends of the two second partitions are both matched with the roller surface of the first calendering roller. The side of the two second partitions close to the third calendering roller is matched with the roller surface of the third calendering roller. The top of the second partition is provided with a partition groove. The first partition is matched with the partition groove. There is a gap between the bottom end of the first partition and the roller surface of the first calendering roller. Two support plates are respectively provided on the inner walls on both sides of the top opening. The two ends of the first partition are respectively connected to the inner sides of the two support plates. The two adjustment limit members correspond to the two second partitions respectively. The adjustment limit members are arranged on the first partition and the corresponding second partition. The material trough is formed between the first partition, the two second partitions and the two adjustment limit members.

7. The powder calendering mechanism according to claim 6, characterized in that: The adjustment limit member is detachably arranged on the first partition and the corresponding second partition; the bottom end of the adjustment limit member is provided with a first limit groove and two second limit grooves arranged oppositely, the first limit groove cooperates with the first partition, the two second limit grooves are both connected to the first limit groove, and the two second limit grooves respectively cooperate with the corresponding second partitions, the adjustment limit member is provided with a mounting hole, the mounting hole passes through the first limit groove, and two mounting fasteners arranged oppositely are installed in the mounting hole, and the heads of the two mounting fasteners respectively abut against the two sides of the first partition.

8. The powder calendering mechanism according to claim 6, characterized in that: The two ends of the first partition are respectively slidably connected to the inner sides of the two support plates, and two support seats are respectively provided on the inner sides of the two support plates. The support seats are located above the first partition, and two mounting grooves are respectively provided on the side close to the two support seats. The two adjusting screws respectively pass through the two mounting grooves and are respectively threadedly connected to the two threaded holes at the top of the first partition. The two adjusting screws can be rotated relative to the two support seats respectively, and two limit blocks are respectively sleeved on the outer periphery of the two adjusting screws. The two limit blocks are respectively in contact with the bottom ends of the two support seats. The heads of the two adjusting screws are respectively located above the two support seats and in contact with the top ends of the two support seats respectively.

9. The powder calendering mechanism according to claim 2, characterized in that: The first calendering drive assembly and the second calendering drive assembly each include a first calendering motor and a first calendering reducer, the first calendering reducer being arranged at the top of a support frame, the support frame being located on one side of the frame, the first calendering motor being arranged on the first calendering reducer, the output end of the first calendering motor being connected to the input end of the first calendering reducer, the output end of the first calendering reducer of the first calendering drive assembly being connected to one end of the first calendering roller, and the output end of the first calendering reducer of the second calendering drive assembly being connected to one end of the second calendering roller; The third calendering drive assembly includes a second calendering motor, a second calendering reducer and a transmission rod, wherein the second calendering reducer is arranged on one side of the mounting frame, the second calendering motor is arranged on the second calendering reducer, the output end of the second calendering motor is connected to the input end of the second calendering reducer, the output end of the second calendering reducer is connected to one end of the transmission rod, and the other end of the transmission rod extends into the mounting frame and is connected to one end of the third calendering roller; The back roller drive assembly includes a back roller motor and a back roller reducer, the back roller reducer is arranged at the top of the support frame, the back roller motor is arranged on the back roller reducer, the output end of the back roller motor is connected to the input end of the back roller reducer, and the output end of the back roller reducer is connected to one end of the first back roller.

10. A pole piece production device, comprising an unwinding mechanism and a rewinding mechanism, characterized in that: It also includes a powder calendering mechanism according to any one of claims 1 to 9, wherein the powder calendering mechanism is arranged between the unwinding mechanism and the winding mechanism along the walking path of the pole piece.

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