Pole lug roller passing structure and pole belt conveying equipment

Abstract

The utility model relates to the technical field of lithium battery manufacturing equipment, and discloses a pole lug roller passing structure and pole belt conveying equipment. The roller is provided with an assembling end and a cantilever end, the assembling end is rotationally assembled on the mounting seat, and the cantilever end is provided with an avoiding space used for avoiding the tab to suspend the tab; and the lifting structure comprises a flexible part capable of elastically deforming, and the flexible part is assembled at the cantilever end and is used for lifting the tab in the radial direction. When the pole belt passes through the roller, the pole lug is in a suspended state, so that the pole lug is prevented from being deformed and rebounded or collided with the roller to be broken due to non-uniform stress on the roller; the flexible part is assembled at the cantilever end of the roller, the flexible part directly lifts the tab in the radial direction to prevent the tab from collapsing, and the flexible part can elastically deform, so that the tab cannot be collided or stretched while the tab is lifted in the radial direction, and the tab is prevented from being damaged and fractured while the tab is prevented from collapsing.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing equipment, in particular to a tab roller structure and a tab belt conveying device. Background Art

[0002] The pole piece is an important component of lithium-ion batteries. During the production process of battery cells, after the pole piece is unwound and cut, pole tabs are formed on both sides of the pole piece strip. When the pole piece is transported at high speed on the roller device, the pole tabs are intermittent and discontinuous structures that protrude to the outside of the pole piece strip, and are extremely thin. During the process of the pole piece strip passing the roller and winding after cutting, the contact area between the pole tabs and the roller is reduced. After contacting the roller, the downward pulling force on the top of the pole tab becomes smaller. When the downward pulling force on the pole piece is greater than the supporting force of the roller surface, the pole tabs at both ends will deform and rebound to form crescent-shaped pole tabs. In addition, because the pole tab foil is extremely thin, the base of the pole tab does not provide enough support for the pole tab, causing the pole tab to sag. During high-speed conveying, the pole tab will hit the roller when passing through, causing the pole tab to break or crack, resulting in unqualified pole tabs or broken pole piece strips.

[0003] Conventional roller conveyors employ a coaxially arranged stepped shaft at one end of the main shaft. This ensures that the tabs of the pole sheet are located in the gap outside the stepped shaft and remain suspended during conveyance on the rollers, preventing stress on the tabs as the pole strip passes over the rollers. However, if the tabs are suspended, they may lose support and collapse, potentially folding inwards into the rollers. Utility Model Content

[0004] The purpose of the utility model is to provide a tab roller structure to solve the problem in the prior art that when the pole strip passes the roller, the tab may collapse in a suspended state and fold inward into the roller; the utility model also provides a pole strip conveying device using the tab roller structure.

[0005] In order to achieve the above-mentioned object, the utility model provides a tab roller structure, comprising:

[0006] Mounting seat;

[0007] A roller, the roller having an assembly end and a cantilever end, the assembly end being rotatably assembled on the mounting seat, the cantilever end having an escape space for avoiding the tab so that the tab is suspended;

[0008] The lifting structure includes an elastically deformable flexible member, which is assembled on the cantilever end and is used to radially lift the tab.

[0009] Preferably, the flexible member comprises a brush, which is provided on the end surface of the cantilever end facing away from the assembly end, and the brush is assembled with the roller in a rotation-stop manner.

[0010] Preferably, the lifting structure further includes a gas lifting structure, which is assembled at the cantilever end. The gas lifting structure and the flexible member are spaced apart along the axial direction of the roller, and the gas lifting structure is used to generate airflow for radially lifting the tabs.

[0011] Preferably, the gas lifting structure includes a first turbine, the roller has a coaxially arranged assembly hole at the cantilever end, the first turbine is built into the assembly hole, the first turbine is arranged on the side of the flexible part close to the assembly end, and the first turbine is engaged with the roller to prevent rotation.

[0012] Preferably, the gas lifting structure includes an air hood, which is fixedly assembled on the side of the flexible part away from the assembly end. The air hood seals the cantilever end and forms an air cavity between the air hood and the cantilever end. The air hood has air holes for radial ventilation along the roller, and the air holes are connected to the air cavity.

[0013] Preferably, the air holes are strip-shaped holes extending along the circumference of the air hood.

[0014] Preferably, the gas lifting structure includes a second turbine, which is provided on a side of the flexible member away from the assembly end, and the second turbine is assembled to the roller in a rotation-stop manner.

[0015] Preferably, the roller has a cylindrical outer wall surface, and a chamfer is provided between the outer wall surface and the cantilever end.

[0016] Preferably, the mounting seat includes a mounting plate, a center shaft, a bearing and a retaining ring. The center shaft is adjustably mounted on the mounting plate in its axial position. The bearing is fixedly mounted on the center shaft. The roller is sleeved on the bearing. The retaining ring is clamped between the center shaft and the roller. The retaining ring is mounted on both axial ends of the roller.

[0017] The utility model also provides a pole belt conveying device, comprising the pole lug roller structure described in any of the above technical solutions.

[0018] Compared with the prior art, the advantageous effects of a pole tab roller structure and pole belt conveying equipment according to the embodiment of the utility model are as follows: the cantilever end of the roller has an avoidance space, and when the pole belt passes through the roller, the pole tab is in a suspended state, thereby preventing the pole tab from being subjected to uneven force on the roller and causing deformation rebound or collision with the roller and breaking; a flexible part is assembled at the cantilever end of the roller, and the flexible part directly supports the pole tab radially to prevent the pole tab from collapsing. Since the flexible part can be elastically deformed, it will not collide with or stretch the pole tab while supporting the pole tab radially, thereby preventing the pole tab from collapsing and damaging or breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic structural diagram of the utility model when the flexible member of the tab roller structure is a brush;

[0020] Figure 2 This is a schematic diagram of the explosion structure when the gas lifting structure of the tab roller structure of the utility model is the first turbine;

[0021] Figure 3 This is a schematic structural diagram of the utility model when the gas lifting structure of the tab roller structure is a gas hood;

[0022] Figure 4 yes Figure 3 A schematic diagram of the structure of the gas hood of the tab roller structure;

[0023] Figure 5 This is a schematic structural diagram of the utility model when the gas lifting structure of the tab roller structure is the second turbine;

[0024] Figure 6 It is a schematic diagram of the assembly of the roller and the mounting seat of the tab roller structure of the utility model.

[0025] In the figure, 1. mounting seat, 11. mounting plate, 12. center shaft, 13. bearing, 14. retaining ring, 2. roller, 21. assembly end, 22. cantilever end, 23. outer wall, 24. chamfered corner, 25. assembly hole, 3. first turbine, 4. air cover, 41. air cavity, 42. air hole, 5. second turbine, 6. brush, 7. pole belt. DETAILED DESCRIPTION

[0026] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] A preferred embodiment of the tab roller structure of the present invention is as follows: Figure 1 and Figure 6 As shown, the tab roller structure includes a mounting base 1, a roller 2 and a lifting structure. The mounting base 1 is the installation base of the roller 2 and the lifting structure. The roller 2 is used for the pole belt 7 to pass around, and the lifting structure is used to support the tab of the pole belt 7.

[0028] like Figure 6 As shown, roller 2 has an assembly end 21 and a cantilever end 22. Assembly end 21 is rotatably mounted on mounting base 1. Cantilever end 22 has a clearance space for paving the way for the tabs, allowing them to remain suspended. During high-speed conveying, when the pole belt 7 passes over roller 2, it approaches the cantilever end 22 of roller 2. The tabs of the pole belt 7 extend beyond the axial edge of roller 2 and float in the clearance space. This effectively prevents the tabs from sagging and colliding with roller 2, or from forming crescent-shaped tabs due to stress and tension between the tabs and roller 2 during conveying.

[0029] The supporting structure includes a flexible member, which is assembled at the cantilever end 22 of the roller 2. The flexible member is used to flexibly support the tab suspended in the avoidance space of the roller 2 along the radial direction of the roller 2 to prevent the tab from collapsing. The flexible member can be elastically deformed and is used to support the tab in the radial direction. When the pole belt 7 passes over the roller, the roller 2 rotates with the tab. The tab of the pole belt 7 contacts the flexible member. The flexible member provides a supporting force to the tab along with the roller 2 to prevent the tab from collapsing. At the same time, because the flexible member can be elastically deformed, the tab deforms when it contacts the flexible member, preventing the tab from colliding with the tab and causing damage to the tab.

[0030] The tab-passing roller structure has an avoidance space at the cantilever end 22 of the roller 2. When the pole belt 7 passes through the roller 2, the tab is in a suspended state, which prevents the tab from being unevenly stressed on the roller 2 and causing deformation and rebound or colliding with the roller 2 to break. A flexible part is assembled at the cantilever end 22 of the roller 2, and the flexible part directly supports the tab radially to prevent the tab from collapsing. Since the flexible part can be elastically deformed, it will not collide with or stretch the tab while supporting the tab radially, thereby preventing the tab from collapsing and damaging the tab.

[0031] Preferably, the flexible member includes a brush 6 , which is provided on the end surface of the cantilever end 22 facing away from the assembly end 21 , and the brush 6 is assembled with the roller 2 in a rotation-proof manner.

[0032] The flexible member is formed by a brush 6, the bristles of which can be elastically deformed and provide effective radial support for the tab, ensuring that the tab is lifted while avoiding collision with the tab. The brush 6 is assembled at the cantilever end 22 of the roller 2 and is located directly below the tab. The brush 6 is fixed to the roller 2 and can rotate synchronously with the roller 2 to effectively lift the tab.

[0033] Preferably, the lifting structure further includes a gas lifting structure, which is assembled at the cantilever end 22. The gas lifting structure and the flexible member are spaced apart along the axial direction of the roller 2. The gas lifting structure is used to generate airflow to radially lift the tabs.

[0034] The gas lift structure and the flexible member are spaced apart along the axial direction of roller 2. The gas lift structure can generate airflow, which exerts radial lifting force on the tabs when flowing, preventing the tabs from collapsing. The gas lift structure and the flexible member work together to provide radial support for the tabs, preventing the tabs from collapsing and folding inward into roller 2. The airflow does not directly collide with the tabs, preventing damage to the tabs.

[0035] Preferably, the gas lifting structure includes a first turbine 3, the roller 2 has a coaxially arranged assembly hole 25 at the cantilever end 22, the first turbine 3 is built into the assembly hole 25, the first turbine 3 is arranged on the side of the flexible part close to the assembly end 21, and the first turbine 3 is engaged with the roller 2 to prevent rotation.

[0036] like Figure 2 As shown, the first turbine 3 of the gas lifting structure is assembled in the assembly hole 25 of the cantilever end 22. The first turbine 3 is fixedly engaged with the roller 2. When the pole belt 7 passes over the roller 2, the pole belt 7 drives the roller to rotate, and the first turbine 3 can rotate synchronously with the roller 2. The first turbine 3 generates airflow to the outside of the assembly hole 25 through rotation. The airflow can diverge radially, generating a radial lifting force on the pole tab and preventing the tab from collapsing. In this embodiment, the first turbine 3 is fixedly assembled with the roller 2 in the assembly hole 25, so that the first turbine 3 rotates synchronously with the roller 2 to generate airflow blowing outward.

[0037] Preferably, the gas lifting structure includes an air hood 4, which is fixedly assembled on the side of the flexible part away from the assembly end 21. The air hood 4 seals the cantilever end 22 and forms an air cavity 41 between the air hood 4 and the cantilever end 22. The air hood 4 has air holes 42 for radial ventilation along the roller 2, and the air holes 42 are connected to the air cavity 41.

[0038] like Figure 3 As shown, the gas lifting structure is formed by an air hood 4, which is arranged on the outside of the flexible member away from the roller 2. An air cavity 41 is formed between the air hood 4 and the cantilever end 22. An external air pump can be provided to communicate with the air cavity 41 to pump gas into the air cavity 41. The gas rate can be adjusted by adjusting the valve. The gas is discharged through the air holes 42. During assembly, the air holes 42 are distributed toward the pole band 7. After the air flow is discharged from the air holes 42, it radially lifts the tabs. In this embodiment, when the pole band 7 drives the roller 2 to rotate, the position of the air hood 4 is different, and it remains on the lower side of the track where the tabs pass. The air holes 42 always blow air toward the pole band 7.

[0039] Preferably, the air holes 42 are strip-shaped holes extending along the circumference of the air hood 4 .

[0040] like Figure 4 As shown, the air holes 42 are strip-shaped, which increases their length. Airflow flows evenly along the circumference of roller 2, increasing the airflow coverage area, effectively supporting the tabs and preventing damage. When the pole belt 7 drives the roller 2 to rotate, the contact area between the pole belt 7 and the roller 2 forms an arc. The strip-shaped holes can effectively cover the contact area between the pole belt 7 and the roller 2, preventing the tabs from collapsing.

[0041] Preferably, the gas lifting structure includes a second turbine 5 , which is provided on a side of the flexible member away from the assembly end 21 , and the second turbine 5 is assembled to the roller 2 in a rotation-proof manner.

[0042] like Figure 5As shown, the second turbine 5 is disposed on the side of the flexible member facing away from the assembly end 21. When the pole belt 7 passes over the roller 2, it drives the roller 2 to rotate synchronously. During the rotation of the roller 2, the second turbine 5 rotates synchronously with the roller 2. During the rotation, the second turbine 5 generates an outward airflow. This airflow flows directly along the radial direction of the roller 2, generating a lifting force on the tab and preventing it from collapsing. In this embodiment, the second turbine 5 is fixedly mounted on the roller 2 to rotate synchronously with the roller 2 to generate an outward airflow.

[0043] Preferably, the roller 2 has a cylindrical outer wall surface 23 , and a rounded corner 24 is provided between the outer wall surface 23 and the cantilever end 22 .

[0044] like Figure 6 As shown, a chamfer 24 is provided between the outer wall surface 23 of the roller 2 and the cantilever end 22. During the rotation of the roller 2, the pole ear of the pole band 7 passes through the position of the chamfer 24. The chamfer 24 prevents the outer wall surface 23 of the roller 2 from contacting the pole ear, thereby preventing the roller 2 from scratching the pole ear during the rotation.

[0045] Preferably, the mounting seat 1 includes a mounting plate 11, a center shaft 12, a bearing 13 and a retaining ring 14. The center shaft 12 is adjustable in axial position on the mounting plate 11. The bearing 13 is fixedly mounted on the center shaft 12. The roller 2 is sleeved on the bearing 13. The retaining ring 14 is clamped between the center shaft 12 and the roller 2. The roller 2 is equipped with retaining rings 14 at both axial ends.

[0046] like Figure 6 As shown, the mounting seat 1 is formed by a mounting plate 11, a center shaft 12, a bearing 13 and a retaining ring 14. The mounting plate 11 is the mounting base of the center shaft 12. In this embodiment, the center shaft 12 is plug-fitted into the mounting plate 11. By adjusting the depth of the center shaft 12 inserted into the mounting plate 11, the relative position of the roller 2 and the pole band 7 can be adjusted to meet the compatibility and replacement of pole bands 7 of different types and widths.

[0047] Bearing 13 is fixedly mounted on center shaft 12, and roller 2 is mounted on bearing 13, which reduces the resistance of roller 2 during rotation. By adjusting the position of bearing 13 on center shaft 12, the position of roller 2 can be adjusted, thereby adjusting the relative position of roller 2 and pole belt 7 to meet the compatibility and replacement of pole belts 7 of different types and widths. A snap ring 14 is clamped between center shaft 12 and roller 2, securing roller 2 and locking its axial position.

[0048] The present invention also provides a preferred embodiment of a pole belt conveying device, comprising a pole tab roller structure. The specific structure of the pole tab roller structure is the same as that of the pole tab roller structure in any of the above embodiments, and will not be repeated here.

[0049] In summary, the embodiments of the present invention provide a pole ear roller structure and pole belt conveying equipment, wherein the cantilever end of the roller has an avoidance space, and when the pole belt passes through the roller, the pole ear is in a suspended state, so as to prevent the pole ear from being subjected to uneven force on the roller and causing deformation and rebound or hitting the roller and breaking; a flexible part is assembled at the cantilever end of the roller, and the flexible part directly supports the pole ear radially to prevent the pole ear from collapsing. Since the flexible part can be elastically deformed, it will not collide with or stretch the pole ear while supporting the pole ear radially, thereby preventing the pole ear from collapsing and damaging and breaking the pole ear.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A tab roller structure, characterized in that: include: Mounting seat (1); A roller (2), the roller (2) having an assembly end (21) and a cantilever end (22), the assembly end (21) being rotatably assembled on the mounting seat (1), and the cantilever end (22) having an escape space for escaping the tab so that the tab is suspended; A lifting structure comprises an elastically deformable flexible member, the flexible member is assembled on the cantilever end (22), and the flexible member is used to lift the tab.

2. The tab roller structure according to claim 1, characterized in that: The flexible member comprises a brush (6), the brush (6) being arranged on the end surface of the cantilever end (22) facing away from the assembly end (21), and the brush (6) being assembled with the roller (2) in a rotation-stop manner.

3. The tab roller structure according to claim 1 or 2, characterized in that: The lifting structure further comprises a gas lifting structure, which is assembled on the cantilever end (22). The gas lifting structure and the flexible member are spaced apart along the axial direction of the roller (2). The gas lifting structure is used to generate an airflow for radially lifting the tab.

4. The tab roller structure according to claim 3, characterized in that: The gas lifting structure includes a first turbine (3), the roller (2) has a coaxially arranged assembly hole (25) at the cantilever end (22), the first turbine (3) is built into the assembly hole (25), the first turbine (3) is arranged on a side of the flexible member close to the assembly end (21), and the first turbine (3) is engaged with the roller (2) to prevent rotation.

5. The tab roller structure according to claim 3, characterized in that: The gas lifting structure includes an air hood (4), which is fixedly assembled on a side of the flexible member away from the assembly end (21), and the air hood (4) seals the cantilever end (22) and forms an air cavity (41) between the air hood (4) and the cantilever end (22), and the air hood (4) has air holes (42) for radial ventilation along the roller (2), and the air holes (42) are connected to the air cavity (41).

6. The tab roller structure according to claim 5, characterized in that: The air holes (42) are strip-shaped holes extending along the circumference of the air hood (4).

7. The tab roller structure according to claim 3, characterized in that: The gas lifting structure comprises a second turbine (5), the second turbine (5) being arranged on a side of the flexible member away from the assembly end (21), and the second turbine (5) being assembled with the roller (2) in a rotation-stop manner.

8. The tab roller structure according to claim 1 or 2, characterized in that: The roller (2) has a cylindrical outer wall surface (23), and a rounded corner (24) is provided between the outer wall surface (23) and the cantilever end (22).

9. The tab roller structure according to claim 1 or 2, characterized in that: The mounting seat (1) comprises a mounting plate (11), a central shaft (12), a bearing (13) and a snap ring (14); the central shaft (12) is axially positionally adjustable and mounted on the mounting plate (11); the bearing (13) is fixedly mounted on the central shaft (12); the roller (2) is sleeved on the bearing (13); the snap ring (14) is clamped between the central shaft (12) and the roller (2); and the snap ring (14) is mounted on both axial ends of the roller (2).

10. A belt conveyor device, characterized in that: The invention comprises the tab roller structure according to any one of claims 1 to 9.

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