Brush dust removal device and pole piece splitting machine

Abstract

The utility model relates to the technical field of pole piece slitting, and discloses a brush dust removal device and a pole piece slitting machine, the brush dust removal device comprises two brush frames, the two ends of each brush frame are respectively provided with a protection mechanism, and the protection mechanisms at the two ends of the two brush frames are respectively and oppositely arranged so as to respectively form protection channels for pole lugs to penetrate through; at least two guide limiting mechanisms are arranged between the brush frame and the protection mechanisms, are arranged at intervals in the moving direction of the pole piece, and are used for limiting the two protection mechanisms at the two ends of the brush frame to be close to or away from each other in the width direction of the brush frame; the locking mechanism is arranged on the brush frame and used for locking the positions of the two protection mechanisms, the precision of the two protection mechanisms in the process of approaching each other can be ensured through the brush dust removal device provided by the utility model, and the problem that the tab cannot be protected due to the fact that the protection mechanisms are not adjusted in place is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece slitting, in particular to a brush dust removal device and a pole piece slitting machine. Background Art

[0002] In the relevant technology, the pole piece is a key part of the lithium battery, and its quality directly affects the performance of the lithium battery. In the production process of the pole piece, a pole piece slitting machine is usually used to cut the coated pole piece to meet the size requirements of the pole piece for lithium batteries of different specifications. Dust is easily generated in the process of cutting the pole piece by the pole piece slitting machine. A common solution is to set up a brush dust removal device to remove dust from the surface of the pole piece, and pass the cut pole piece through a pair of rotating brush rollers in the brush dust removal device, and use the bristles on the brush rollers to remove dust from the pole piece. In particular, for some pole pieces with pole ears, a protective mechanism will be provided on the brush dust removal device to prevent the pole ear from folding when passing through the brush roller, and the protective mechanism provided on the brush dust removal device can also be moved to meet the protection requirements of the pole ears on pole pieces of different widths. During actual use, the inventors of this application found that the positioning accuracy of the protective mechanism on the brush dust removal device is crucial to effectively preventing the pole ear from folding when passing through the brush roller; in addition, in the process of the pole piece with the pole ear continuously passing through the brush dust removal device, occasional contact between the protective mechanism and the pole ear may also cause damage to the pole ear, resulting in affecting its reliability in subsequent use. Utility Model Content

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present invention provides a brush dust removal device that can meet the dust removal needs of different types of pole pieces, ensure effective protection of the pole tabs during the dust removal process, and ensure stability and adjustment accuracy during the adjustment process, thereby preventing the problem of ineffective protection of the pole tabs due to improper adjustment of the protection mechanism.

[0004] In order to achieve the above-mentioned object, the utility model provides a brush dust removal device, comprising two brush frames arranged in parallel and at intervals, wherein protective mechanisms are respectively provided at both ends of the brush frames, and the protective mechanisms at both ends of the two brush frames are respectively arranged opposite to each other to form protective channels for the tabs to pass through;

[0005] At least two guide and limiting mechanisms are arranged between the brush frame and the protective mechanism, and at least two of the guide and limiting mechanisms are arranged at intervals along the moving direction of the pole piece. At least two of the guide and limiting mechanisms are used to limit the two protective mechanisms at both ends of the brush frame to approach or move away from each other along the width direction of the brush frame, and a locking mechanism is provided on the brush frame for locking the positions of the two protective mechanisms.

[0006] Preferably, a first guide and limit mechanism and a second guide and limit mechanism are provided between the brush frame and the protection mechanism, and the first guide and limit mechanism and the second guide and limit mechanism are arranged at intervals along the moving direction of the pole piece.

[0007] Preferably, the first guide and limiting mechanism includes a first mounting portion extending along the length direction of the brush frame, the first mounting portion is provided with a first limiting portion extending along its length direction, and the protective mechanism is provided with a first slider, which is used to move back and forth along the direction defined by the first limiting portion.

[0008] Preferably, the second guide and limiting mechanism comprises a second mounting portion extending along the length direction of the brush frame, and the second mounting portion is provided with a second limiting hole extending along the length direction thereof and penetrating in the up-down direction;

[0009] The locking mechanism includes a first clamping block located above the second limiting hole and a second clamping block located below the second limiting hole. The first clamping block and / or the second clamping block are provided with a second slider that can move back and forth along the length direction of the second limiting hole. The first clamping block located on both sides of the second slider is rotatably provided with a locking bolt, and the lower end of the locking bolt passes through the second limiting hole and is threadedly engaged with the second clamping block.

[0010] Preferably, the second mounting portion is provided with scale lines marked along the length direction of the second limiting hole, and the scale lines are used to mark the distance between the two protective mechanisms at both ends of the brush frame.

[0011] Preferably, the protection mechanism includes a straight plate portion and a first bent portion, wherein the first bent portion is arranged on a side where the tab enters the protection channel and is arranged to extend in a direction away from the protection channel.

[0012] Preferably, the protection mechanism further includes a second bending portion, which is arranged on a side of the tab away from the protection channel and is arranged to extend in a direction away from the protection channel.

[0013] Preferably, the protection mechanism is provided with a freely rotatable protection roller, and the protection roller is extended along the width direction of the protection mechanism so as to be in rolling contact with the tab.

[0014] Preferably, a plurality of the protection rollers are provided, and the plurality of protection rollers are arranged in parallel and at intervals along the length direction of the protection mechanism.

[0015] The utility model also provides a pole piece cutting machine, which is provided with the above-mentioned brush dust removal device.

[0016] Through the above technical solution, by arranging at least two guide and limiting mechanisms at intervals in the moving direction of the pole piece, the at least two guide and limiting mechanisms can limit the two protective mechanisms at both ends of the brush frame to approach or move away from each other along the width direction of the brush frame, thereby meeting the pole ear protection requirements of pole pieces of different widths during the dust removal process; in addition, at least two guide and limiting mechanisms can ensure the accuracy of the two protective mechanisms in the process of approaching each other, avoiding the problem of the pole ear being unable to be protected due to the protective mechanism not being adjusted into place. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a brush dust removal device provided by the utility model;

[0018] Figure 2 This is a cross-sectional view of a brush dust removal device provided by the utility model;

[0019] Figure 3 yes Figure 2 A magnified schematic diagram of position A in the middle;

[0020] Figure 4 It is a cross-sectional view of another brush dust removal device provided by the utility model.

[0021] Description of Reference Numerals

[0022] 1. Pole piece; 101. Dust removal channel; 2. Pole ear; 201. Protection channel; 10. Brush frame; 11. First mounting portion; 111. First limiting portion; 12. Second mounting portion; 121. Second limiting hole; 13. Brush roller; 20. Protection mechanism; 21. First slider; 22. Straight plate portion; 23. First bending portion; 24. Second bending portion; 25. Protection roller; 30. Locking mechanism; 31. First clamping block; 32. Second clamping block; 33. Second slider; 34. Locking bolt. DETAILED DESCRIPTION

[0023] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0024] like Figure 1As shown, the utility model provides a brush dust removal device, comprising two parallel and spaced-apart brush frames 10, wherein protective mechanisms 20 are respectively provided at both ends of the brush frames 10, and the protective mechanisms 20 at both ends of the two brush frames 10 are respectively arranged relative to each other to form a protective channel 201 for the pole ear 2 to pass through; at least two guide limiting mechanisms are provided between the brush frame 10 and the protective mechanism 20, and at least two of the guide limiting mechanisms are spaced-apart along the moving direction of the pole piece 1, and at least two of the guide limiting mechanisms are used to limit the two protective mechanisms 20 at both ends of the brush frame 10 to approach or move away from each other along the width direction of the brush frame 10, and a locking mechanism 30 is provided on the brush frame 10 for locking the positions of the two protective mechanisms 20.

[0025] In the present invention, a rotatable brush roller 13 is provided in each of the two brush frames 10, and a dust removal channel 101 is formed between the two brush rollers 13 for the electrode 1 to pass through. When in use, the two brush rollers 13 can be driven to rotate around their own axes, thereby removing dust from the electrode 1 in the dust removal channel 101 between the two brush rollers 13. By providing protective mechanisms 20 at both ends of the two brush frames 10, the protective mechanisms 20 at both ends of the two brush frames 10 are respectively arranged relative to each other to form protective channels 201 for the electrode tab 2 to pass through. In the process of the electrode 1 passing through the dust removal channel 101 to be dusted, the electrode tab 2 passes through the protective channel 201, thereby preventing the brush roller 13 from folding the electrode tab 2, resulting in a low yield after the electrode 1 is dusted.

[0026] In the technical solution provided by the present invention, at least two guide limiting mechanisms are arranged at intervals in the moving direction of the pole piece 1. The at least two guide limiting mechanisms can limit the two protective mechanisms 20 at both ends of the brush frame 10 to approach or move away from each other along the width direction of the brush frame 10, thereby meeting the pole ear protection requirements of pole pieces 1 of different widths during the dust removal process; in addition, at least two guide limiting mechanisms can ensure the accuracy of the two protective mechanisms 20 in the process of approaching each other, avoiding the problem that the protective mechanism 20 is not adjusted into place and the pole ear 2 cannot be protected.

[0027] It should be noted that in the brush dust removal device provided by the present invention, two brush frames 10 are movably arranged on a base, and a driving mechanism is provided on the base for driving the two brush frames 10 to move closer to or away from each other. When the driving mechanism drives the two brush frames 10 closer to each other, a dust removal channel 101 is formed between the two brush rollers 13 on the two brush frames 10 for the pole piece 1 to pass through, and the two protective mechanisms 20 at both ends of the two brush frames 10 each form a corresponding protective channel 201 for the pole ear 2 to pass through. Correspondingly, a motor for driving the brush roller 13 to rotate is also provided on the brush frame 10, and the brush roller 13 is driven by the motor to rotate so as to remove dust from the pole piece 1 passing through the dust removal channel 101. In the present application Figure 1 、 Figure 2 and Figure 4 In the figure, for the convenience of illustration, the two brush frames 10 are not moved to the working position, that is, they are away from each other.

[0028] In some embodiments, a first guide limiting mechanism and a second guide limiting mechanism are provided between the brush frame 10 and the protective mechanism 20 , and the first guide limiting mechanism and the second guide limiting mechanism are spaced apart along the moving direction of the pole piece 1 .

[0029] In the present invention, the first guide limiting mechanism and the second guide limiting mechanism can be set in any appropriate structural form, as long as they can simultaneously constrain at least one protective mechanism 20 on the brush frame 10 so that the two protective mechanisms 20 located at both ends of the brush frame 10 can move closer to or farther away from each other along the width direction of the brush frame 10. In some embodiments, combined with Figure 2 As shown, the first guide and limiting mechanism includes a first mounting portion 11 extending along the length direction of the brush frame 10, and the first mounting portion 11 is provided with a first limiting portion 111 extending along its length direction. The protective mechanism 20 is provided with a first slider 21, and the first slider 21 is used to move back and forth along the direction defined by the first limiting portion 111.

[0030] It can be understood that the first limiting portion 111 can be a limiting hole provided on the first mounting portion 11 along the left-right direction, and the first slider 21 provided on the protective mechanism 20 can move along the direction limited by the limiting hole; or, the first slider 21 is a bolt rod, which is moved to the required position along the limiting hole and then fixed in position by a nut; or, the first limiting portion 111 can be a groove opened on the first mounting portion 11 along its length direction, and the first slider 21 provided on the protective mechanism 20 can move along the direction limited by the groove.

[0031] In some embodiments, combined Figure 2 and Figure 3As shown, the second guide limiting mechanism includes a second mounting portion 12 extending along the length direction of the brush frame 10, and the second mounting portion 12 is provided with a second limiting hole 121 extending along its length direction and passing through in the up and down directions; the locking mechanism 30 includes a first clamping block 31 located above the second limiting hole 121 and a second clamping block 32 located below the second limiting hole 121, and the first clamping block 31 and / or the second clamping block 32 are provided with a second slider 33 that can move back and forth along the length direction of the second limiting hole 121, and the first clamping block 31 located on both sides of the second slider 33 is rotatably provided with a locking bolt 34, and the lower end of the locking bolt 34 passes through the second limiting hole 121 and is threadedly engaged with the second clamping block 32.

[0032] In the present invention, the protective mechanism 20 is connected to the locking mechanism 30, and the position of the protective mechanism 20 on the brush frame 10 is adjusted and locked by the locking mechanism 30. Specifically, the protective mechanism 20 is connected to the first clamping block 31 on the locking mechanism 30. When adjusting the position, the locking bolt 34 is loosened, and the first clamping block 31 and / or the second clamping block 32 are moved along the direction defined by the second limiting hole 121 via the second slider 33 provided thereon. When they move to the specified position, the locking bolt 34 is tightened.

[0033] Combine Figure 1 It can be seen that in the above-mentioned embodiment of the present invention, the two guide limit mechanisms arranged at intervals along the moving direction of the pole piece 1 only need to be set on the brush frame 10, which is convenient for cooperation with the protective mechanism 20, and is conducive to ensuring the accuracy and stability of the protective mechanism 20 during the adjustment process; in addition, in the above-mentioned embodiment of the present invention, the two guide limit mechanisms have a simple structure and a low setting cost, which is conducive to large-scale promotion and use.

[0034] In some embodiments, the second mounting portion 12 is provided with scale lines marked along the length direction of the second limiting hole 121, and the scale lines are used to mark the distance between the two protective mechanisms 20 at both ends of the brush frame 10. It can be understood that by providing scale lines on the second mounting portion 12, the operator can easily adjust the distance between the two protective mechanisms 20 to meet the tab protection.

[0035] In some embodiments, the protection mechanism 20 includes a straight plate portion 22 and a first bent portion 23. The first bent portion 23 is provided on the side where the tab 2 enters the protection channel 201 and is configured to extend in a direction away from the protection channel 201. It is understood that by providing the first bent portion 23, the tab 2 is prevented from directly contacting the flat straight plate portion 22 when entering the protection channel 201, thereby preventing the tab 2 from being folded when entering the brush dust removal device.

[0036] In some embodiments, the protection mechanism 20 further includes a second bending portion 24, which is provided on a side of the tab 2 that leaves the protection channel 201 and is configured to extend in a direction away from the protection channel 201. It is understood that by providing the second bending portion 24, the tab 2 is prevented from being folded when leaving the brush dust removal device.

[0037] In some embodiments, combined Figure 4 As shown, the protective mechanism 20 is provided with a freely rotatable protective roller 25, which extends along the width direction of the protective mechanism 20 for rolling contact with the tab 2. Compared with the sliding contact between the existing protective mechanism 20 and the tab 2 to prevent the tab 2 from folding, the present invention optimizes the contact with the tab 2 to rolling contact by providing the protective roller 25, thereby avoiding possible scratches on the surface of the tab 2 and ensuring the reliability of the tab 2 during subsequent use. For example, in the present invention, the protective roller 25 is a rubber roller. In particular, in order to avoid taking up too much space, it is preferred to dig a hole in the protective mechanism 20 and bury the protective roller 25 in the protective mechanism 20.

[0038] In some embodiments, a plurality of the protective rollers 25 are provided, and the plurality of protective rollers 25 are arranged in parallel and at intervals along the length direction of the protective mechanism 20 .

[0039] The present invention also provides a pole piece slitting machine having the aforementioned brush dust removal device. The pole piece slitting machine having the aforementioned brush dust removal device can not only remove dust generated during the slitting process of the pole piece 1, but can also adapt to the protection requirements of the pole tabs 2 on pole pieces 1 of different widths, and can ensure the adjustment accuracy of the protection mechanism 20 during the adjustment process, thereby ensuring effective protection of the pole tabs 2.

[0040] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple variations and combinations should also be considered as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A brush dust removal device, characterized in that: It comprises two brush frames (10) arranged in parallel and spaced apart, with protective mechanisms (20) respectively provided at both ends of the brush frames (10), and the protective mechanisms (20) at both ends of the two brush frames (10) are respectively arranged relative to each other to form protective channels (201) for the tabs (2) to pass through. At least two guide limiting mechanisms are provided between the brush frame (10) and the protective mechanism (20), and the at least two guide limiting mechanisms are arranged at intervals along the moving direction of the pole piece (1). The at least two guide limiting mechanisms are used to limit the two protective mechanisms (20) at both ends of the brush frame (10) to approach or move away from each other along the width direction of the brush frame (10), and a locking mechanism (30) is provided on the brush frame (10) for locking the positions of the two protective mechanisms (20).

2. The brush dust removal device according to claim 1, characterized in that: A first guide and limit mechanism and a second guide and limit mechanism are provided between the brush frame (10) and the protection mechanism (20), and the first guide and limit mechanism and the second guide and limit mechanism are spaced apart along the moving direction of the pole piece (1).

3. The brush dust removal device according to claim 2, characterized in that: The first guide and limiting mechanism comprises a first mounting portion (11) extending along the length direction of the brush frame (10), the first mounting portion (11) being provided with a first limiting portion (111) extending along the length direction thereof, and the protective mechanism (20) being provided with a first slider (21), the first slider (21) being used for reciprocating movement along the direction defined by the first limiting portion (111).

4. The brush dust removal device according to claim 2, characterized in that: The second guide and limiting mechanism comprises a second mounting portion (12) extending along the length direction of the brush frame (10), and the second mounting portion (12) is provided with a second limiting hole (121) extending along the length direction thereof and penetrating in the up-down direction; The locking mechanism (30) includes a first clamping block (31) located above the second limiting hole (121) and a second clamping block (32) located below the second limiting hole (121); the first clamping block (31) and / or the second clamping block (32) are provided with a second slider (33) that can reciprocate along the length direction of the second limiting hole (121); locking bolts (34) are rotatably provided on the first clamping block (31) located on both sides of the second slider (33); the lower end of the locking bolt (34) passes through the second limiting hole (121) and is threadedly engaged with the second clamping block (32).

5. The brush dust removal device according to claim 4, characterized in that: The second mounting portion (12) is provided with a scale line marked along the length direction of the second limiting hole (121), and the scale line is used to mark the distance between the two protection mechanisms (20) at both ends of the brush frame (10).

6. The brush dust removal device according to claim 1, characterized in that: The protection mechanism (20) comprises a straight plate portion (22) and a first bent portion (23); the first bent portion (23) is arranged on a side where the tab (2) enters the protection channel (201) and is arranged to extend in a direction away from the protection channel (201).

7. The brush dust removal device according to claim 6, characterized in that: The protection mechanism (20) further includes a second bending portion (24), which is arranged on a side of the tab (2) away from the protection channel (201) and is arranged to extend in a direction away from the protection channel (201).

8. The brush dust removal device according to any one of claims 1 to 7, characterized in that: The protection mechanism (20) is provided with a freely rotatable protection roller (25), and the protection roller (25) is extended along the width direction of the protection mechanism (20) to be used for rolling contact with the tab (2).

9. The brush dust removal device according to claim 8, characterized in that: A plurality of the protection rollers (25) are provided, and the plurality of protection rollers (25) are arranged in parallel and at intervals along the length direction of the protection mechanism (20).

10. A pole piece cutting machine, characterized in that: The pole piece cutting machine is provided with a brush dust removal device according to any one of claims 1 to 9.

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