Dust removal device for wound pole piece

Abstract

The utility model relates to a winding pole piece dust removal device, and belongs to the technical field of battery pole piece processing, the winding pole piece dust removal device comprises a guide mechanism, and the guide mechanism comprises a shaft rod and a roller rotationally connected to the shaft rod and used for supporting a pole piece; the dust removal mechanism comprises a mounting frame fixed to the shaft rod, a mounting seat capable of sliding in the axis direction of the shaft rod to adjust the position is arranged on the mounting frame, and the two ends of the mounting seat are connected with an air knife and a dust suction cover respectively. In the pole piece machining process, the pole piece subjected to die cutting bypasses the roller, the roller supports the pole piece so that the pole piece can be attached to the surface of the roller, dust on the pole piece is blown away under the blowing action of the air knife, meanwhile, the dust suction cover sucks the dust through negative pressure, and the situation that the dust remains on the pole piece, and consequently the safety performance of a battery is affected can be prevented; the device is reasonable in structure and small in occupied space, can be directly installed on an existing winding machine table, and can be rapidly guided in under the condition that on-site machine table parts are not transformed.

Description

Technical Field

[0001] The present application relates to the technical field of battery pole piece processing, and in particular to a dust removal device for wound pole pieces. Background Art

[0002] According to the current battery production process, in the current winding machine, the electrode will generate dust at the cutting edge due to the laser die-cutting of the incoming materials. After being wound into the battery cell, this dust will increase the internal resistance of the battery, increase the short circuit rate of the battery cell, reduce the battery quality rate, and pose a quality risk.

[0003] However, the existing commonly used air knife dust removal structure is too large and cannot be quickly introduced without modifying the on-site machine parts. For example, a pole piece dust removal device disclosed in announcement number CN219357223U and a battery pole piece dust removal device disclosed in announcement number CN219401445U.

[0004] Therefore, it is necessary to study and improve the above structure and provide a dust removal device for a wound pole piece in order to achieve a more practical purpose. Summary of the invention

[0005] The embodiment of the present application provides a dust removal device for a wound pole piece to solve the problem that the existing commonly used air knife dust removal structure is too large and cannot be quickly introduced without modifying the on-site machine parts.

[0006] The embodiment of the present application provides a dust removal device for a wound pole piece, comprising:

[0007] A guide mechanism, the guide mechanism comprising a shaft and a roller rotatably connected to the shaft and used to support the pole piece;

[0008] The dust removal mechanism comprises a mounting frame fixed on the shaft rod, the mounting frame is provided with a mounting seat which can slide and adjust the position along the axis direction of the shaft rod, and the two ends of the mounting seat are respectively connected with a wind knife and a dust hood.

[0009] In some embodiments, the mounting frame is provided with a slide groove for guiding the mounting seat, the mounting frame is provided with a first oblong hole extending along the axis direction of the shaft, and a fastener for connecting the mounting seat is provided in the first oblong hole.

[0010] In some embodiments, the mounting frame includes a vertical plate connected to the shaft rod and a horizontal plate connected to the mounting seat, the vertical plate is provided with a second oblong hole extending vertically, and a fastener for connecting the horizontal plate is provided in the second oblong hole.

[0011] In some embodiments, an angle code is fixed to one end of the horizontal plate close to the vertical plate, a third oblong hole extending vertically is provided on the vertical plate, and a fastener for connecting the angle code is provided in the third oblong hole.

[0012] In some embodiments, a clamping block is provided at one end of the mounting frame away from the mounting seat, and both the clamping block and the mounting frame are provided with semicircular grooves adapted to the shaft rod, and the clamping block and the mounting frame are connected by fasteners to fix the mounting frame on the shaft rod.

[0013] In some embodiments, the mounting seat is provided with an angle adjustment structure for adjusting the direction of the wind knife outlet;

[0014] The angle adjustment structure includes a first hinge seat for connecting to the mounting seat, and a second hinge seat installed on the first hinge seat and used to connect to the wind knife. The first hinge seat and the second hinge seat are connected by a fastener to fix the rotation angle of the second hinge seat.

[0015] In some embodiments, a laser is disposed on the second hinge seat, and the laser and the wind knife have the same inclination angle in the vertical direction.

[0016] In some embodiments, the mounting base is provided with a height adjustment structure for adjusting the height of the dust hood;

[0017] The height adjustment structure includes a fixing block for connecting to the mounting seat and a connecting block for connecting to the dust hood, wherein the connecting block is provided with a fourth oblong hole extending vertically, and a fastener for connecting to the fixing block is provided in the fourth oblong hole.

[0018] In some embodiments, the dust hood has an arc-shaped dust extraction port, and the dust extraction port is arranged along the circumferential outer edge of the roller.

[0019] In some embodiments, a guide ring is provided on the outer circumferential surface of the roller, and a guide surface for guiding air toward the dust extraction port is provided on the guide ring.

[0020] The beneficial effects of the technical solution provided by this application include:

[0021] An embodiment of the present application provides a dust removal device for a wound pole piece, wherein the guide mechanism includes a shaft rod and a roller rotatably connected to the shaft rod and used to support the pole piece; the dust removal mechanism includes a mounting frame fixed to the shaft rod, the mounting frame is provided with a mounting seat which can be slidably adjusted along the axis direction of the shaft rod, and both ends of the mounting seat are respectively connected to a wind knife and a dust hood.

[0022] Therefore, during the electrode processing, the electrode after die-cutting passes around the roller, and the roller supports the electrode so that the electrode is attached to the surface of the roller. Under the action of the wind knife, the dust on the electrode is blown away, and at the same time, the dust hood absorbs the dust through negative pressure, which can prevent the dust from remaining on the electrode and having an adverse effect on the safety performance of the battery. The device of the present application has a reasonable structure, occupies a small space, can be directly installed on the existing winding machine, and can be quickly introduced without modifying the on-site machine parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a dust removal device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of the mounting frame provided in the embodiment of the present application;

[0026] Figure 3 A schematic structural diagram of a mounting frame provided in an embodiment of the present application from another perspective;

[0027] Figure 4 A schematic diagram of the connection between the first hinge seat and the second hinge seat provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the connection structure of the fixing block and the connecting block provided in an embodiment of the present application;

[0029] Figure 6 A partial cross-sectional view of the dust hood provided in an embodiment of the present application.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Shaft; 2. Roller; 3. Mounting frame; 4. Mounting seat; 5. Air knife; 6. Dust hood; 7. Slide; 8. First oblong hole; 9. Vertical plate; 10. Horizontal plate; 11. Second oblong hole; 12. Angle code; 13. Third oblong hole; 14. Clamping block; 15. Semicircular groove; 16. First hinge seat; 17. Second hinge seat; 18. Laser; 19. Fixing block; 20. Connecting block; 21. Fourth oblong hole; 22. Dust extraction port; 23. Guide ring; 24. Guide surface. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] The embodiment of the present application provides a dust removal device for a wound pole piece, which can solve the problem that the existing commonly used air knife dust removal structure is too large and cannot be quickly introduced without modifying the on-site machine parts.

[0034] See also Figures 1 to 6 As shown, an embodiment of the present application provides a dust removal device for a wound pole piece, comprising:

[0035] A guide mechanism, the guide mechanism comprises a shaft 1, and a roller 2 rotatably connected to the shaft 1 and used for supporting the pole piece;

[0036] The dust removal mechanism comprises a mounting frame 3 fixed on the shaft 1, on which a mounting seat 4 which can be slidably adjusted along the axis direction of the shaft 1 is arranged, and at both ends of the mounting seat 4 are respectively connected with an air knife 5 and a dust hood 6.

[0037] The guide mechanism of the wound electrode dust removal device in the embodiment of the present application is provided with an axis rod 1 and a roller 2 rotatably connected to the axis rod 1. The roller 2 can provide a certain supporting force for the electrode sheet, so that the electrode sheet is attached to the surface of the roller 2, which is convenient for the wind knife 5 to blow away the dust on the surface of the electrode sheet. At the same time, it can cooperate with the dust hood 6 to absorb the dust through negative pressure, which can prevent the dust from remaining on the electrode sheet and having an adverse effect on the safety performance of the secondary battery.

[0038] In addition, in this embodiment, the mounting seat 4 on the mounting frame 3 can be slidably adjusted along the axial direction of the shaft rod 1. Therefore, the position of the mounting seat 4 can be adjusted so that the wind knife 5 and the dust hood 6 on the mounting seat 4 can be quickly directed to the position on the pole piece that needs dust removal, thereby ensuring the dust removal effect on the pole piece.

[0039] The device of the present application has a reasonable structure, occupies a small space, and is easy to install and use. The shaft rod 1 of the guide mechanism can be directly installed on the winding machine by bolts, and the device of the present application can be quickly introduced without modifying the on-site machine parts to improve the quality stability of battery cell production.

[0040] In some alternative embodiments: See Figures 1 to 3As shown, an embodiment of the present application provides a wound pole piece dust removal device, wherein a mounting frame 3 of the wound pole piece dust removal device is provided with a slide groove 7 for guiding the mounting seat 4, and a first oblong hole 8 extending along the axial direction of the shaft 1 is provided on the mounting frame 3, and a fastener for connecting the mounting seat 4 is provided in the first oblong hole 8.

[0041] A slide groove 7 and a first oblong hole 8 are provided on the mounting frame 3 of the embodiment of the present application. The mounting base 4 is mounted on the mounting frame 3 by fasteners, and the fasteners pass through the first oblong hole 8. When the position of the mounting base 4 needs to be adjusted, the fasteners can be loosened, and the mounting base 4 can be slid along the slide groove 7 to a suitable position. Finally, the position of the mounting base 4 can be locked by the fasteners, so that the wind knife 5 and the dust hood 6 can be driven to adjust their positions at the same time through the mounting base 4.

[0042] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a wound pole piece dust removal device, wherein the mounting frame 3 of the wound pole piece dust removal device includes a vertical plate 9 connected to the shaft rod 1 and a horizontal plate 10 connected to the mounting seat 4, and a second oblong hole 11 extending vertically is provided on the vertical plate 9, and a fastener for connecting the horizontal plate 10 is provided in the second oblong hole 11.

[0043] The mounting frame 3 of the embodiment of the present application includes a horizontal plate 10 and a vertical plate 9 installed perpendicularly to each other, a second oblong hole 11 is provided on the vertical plate 9, the horizontal plate 10 is installed on the vertical plate 9 by a fastener, the fastener passes through the second oblong hole 11, and the installation height of the horizontal plate 10 can be adjusted along the longitudinal direction of the vertical plate 9 (i.e., the extension direction of the second oblong hole). Specifically, when it is necessary to adjust the installation height of the horizontal plate 10, the fastener can be loosened, and then the horizontal plate 10 can be translated and slid along the length direction of the second oblong hole 11 to a suitable position, and finally the position of the horizontal plate 10 is locked by the fastener, so that the wind knife 5 and the dust hood 6 can be at a suitable height position.

[0044] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a wound pole piece dust removal device, in which a horizontal plate 10 of the wound pole piece dust removal device is fixed with an angle code 12 at one end close to the vertical plate 9, and a third oblong hole 13 extending vertically is provided on the vertical plate 9, and a fastener for connecting the angle code 12 is provided in the third oblong hole 13.

[0045] An angle code 12 is installed between the horizontal plate 10 and the vertical plate 9 in the embodiment of the present application. The angle code 12 is fixed to the horizontal plate 10 by bolts. To ensure that the angle code 12 can adjust the height together with the horizontal plate 10, a third oblong hole 13 is opened on the vertical plate 9. The angle code 12 is installed on the vertical plate 9 by fasteners. The fasteners pass through the third oblong hole 13. When it is necessary to adjust the installation height of the horizontal plate 10, the fasteners connected to the angle code 12 can be loosened to cooperate with the horizontal plate 10 to adjust the installation height.

[0046] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a wound pole piece dust removal device, wherein a clamping block 14 is provided at one end of a mounting frame 3 away from a mounting seat 4, and a semicircular groove 15 adapted to the shaft rod 1 is provided on the clamping block 14 and the mounting frame 3, and the clamping block 14 and the mounting frame 3 are connected by fasteners to fix the mounting frame 3 on the shaft rod 1.

[0047] The mounting frame 3 of the embodiment of the present application is detachably mounted on the shaft rod 1, and a matching clamping block 14 is provided at the end of the mounting frame 3. The semicircular groove 15 of the mounting frame 3 and the clamping block 14 fits the shaft rod 1, and the clamping block 14 is fixedly connected to the mounting frame 3 by fasteners to achieve clamping. By disassembling and assembling the fasteners and the clamping block 14, the mounting frame 3 can be quickly disassembled and assembled.

[0048] In some alternative embodiments: See Figure 1 and Figure 4 As shown, the embodiment of the present application provides a wound pole piece dust removal device, and the mounting seat 4 of the wound pole piece dust removal device is provided with an angle adjustment structure for adjusting the direction of the air outlet of the wind knife 5;

[0049] The angle adjustment structure includes a first hinge seat 16 for connecting to the mounting seat 4, and a second hinge seat 17 installed on the first hinge seat 16 and for connecting to the wind knife 5. The first hinge seat 16 and the second hinge seat 17 are connected by fasteners to fix the rotation angle of the second hinge seat 17.

[0050] The wind knife 5 of the embodiment of the present application can swing and adjust the direction of the air outlet through an angle adjustment structure, and the angle adjustment structure includes a first hinge seat 16, a second hinge seat 17, and a fastener connecting the first hinge seat 16 and the second hinge seat 17. Specifically, one end of the first hinge seat 16 is fixed to the end of the mounting seat 4 by a screw, and the other end of the first hinge seat 16 is connected to one end of the second hinge seat 17 by a fastener, the axis of the fastener coincides with the rotation center line of the second hinge seat 17, and the wind knife 5 is fixed to the other end of the second hinge seat 17 by a screw.

[0051] When the direction of the air outlet of the wind knife 5 needs to be adjusted, the fasteners connecting the first hinge seat 16 and the second hinge seat 17 can be loosened, and then the second hinge seat 17 can be rotated around the first hinge seat 16 to a suitable position, and finally the position of the horizontal plate 10 can be locked by tightening the fasteners connecting the first hinge seat 16 and the second hinge seat 17, so that the position of the wind knife 5 can be adjusted so that its air outlet is facing the appropriate position.

[0052] In some alternative embodiments: See Figure 1 and Figure 4As shown, an embodiment of the present application provides a dust removal device for a wound pole piece, a laser 18 is arranged on the second hinge seat 17 of the dust removal device for a wound pole piece, and the inclination angles of the laser 18 and the wind knife 5 in the vertical direction are consistent.

[0053] The wind knife 5 and the laser 18 are fixedly mounted on the second hinge seat 17 of the present embodiment. Figure 1 The wind knife 5 and the laser 18 have the same inclination angle in the vertical direction. When adjusting the position of the second hinge seat 17, when the light beam emitted by the laser 18 is directed toward the opening of the dust hood 6, the air outlet of the wind knife 5 can be directed toward the opening of the dust hood 6, thereby facilitating the adjustment of the position of the wind knife 5.

[0054] In some alternative embodiments: See Figure 1 and Figure 5 As shown, the embodiment of the present application provides a wound pole piece dust removal device, and a height adjustment structure for adjusting the height of the dust hood 6 is provided on the mounting seat 4 of the wound pole piece dust removal device;

[0055] The height adjustment structure includes a fixing block 19 for connecting to the mounting base 4 and a connecting block 20 for connecting to the dust hood 6. The connecting block 20 is provided with a fourth oblong hole 21 extending vertically. A fastener for connecting to the fixing block 19 is provided in the fourth oblong hole 21.

[0056] The dust hood 6 of the embodiment of the present application can adjust the height distance between the dust extraction port 22 and the pole piece through a height adjustment structure, and the height adjustment structure includes a fixing block 19 and a connecting block 20, and a fastener connecting the fixing block 19 and the connecting block 20. Specifically, the fixing block 19 is fixed to an end of the mounting seat 4 away from the first hinge seat 16 by screws, the fastener penetrates the fourth oblong hole 21 on the connecting block 20 and connects the fixing block 19, and the dust hood 6 is fixed to the connecting block 20.

[0057] When the height of the dust hood 6 needs to be adjusted, the fasteners connecting the fixed block 19 and the connecting block 20 can be loosened, and then the connecting block 20 can be slid to a suitable position along the height direction of the fixed block 19, and finally the position of the connecting block 20 can be locked by tightening the fasteners connecting the fixed block 19 and the connecting block 20, so that the height of the dust hood 6 can be adjusted to make the distance from the dust extraction port 22 to the pole piece appropriate.

[0058] In some alternative embodiments: See Figure 1 and Figure 6 As shown, an embodiment of the present application provides a wound pole piece dust removal device, wherein the dust extraction hood 6 of the wound pole piece dust removal device has an arc-shaped dust extraction port 22 , and the dust extraction port 22 is arranged along the circumferential outer edge of the roller 2 .

[0059] The dust extraction port 22 of the dust extraction hood 6 of the embodiment of the present application is arc-shaped and can be set on the circumferential outer side of the roller 2, so that the gas blown toward the pole piece by the wind knife 5 can be collected by the external negative pressure dust extraction equipment connected to the dust extraction hood 6 even if it moves circumferentially around the roller 2.

[0060] In some alternative embodiments: See Figure 1 and Figure 6 As shown, an embodiment of the present application provides a wound pole piece dust removal device, wherein a guide ring 23 is provided on the outer circumferential surface of a roller 2 of the wound pole piece dust removal device, and a guide surface 24 for guiding air toward a dust extraction port 22 is provided on the guide ring 23.

[0061] The guide ring 23 of the embodiment of the present application can be sleeved on the roller 2 and arranged between the roller 2 and the dust hood 6. The guide ring 23 has a guide surface 24, and the guide surface 24 can guide wind to the dust outlet 22. Under the action of the guide surface 24, the gas blown out by the wind knife 5 can be collected into the dust hood 6 along the guide surface 24.

[0062] For example, in the production process of a battery cell, the pole piece will continue to slide on the pole piece roller to the rear station. At this time, the material line will stabilize within a certain range, that is, the activity range of the pole piece cutting edge on the roller 2 is stable at ±1mm. After the material line stabilizes, the machine will be temporarily stopped and the guide ring 23 will be installed at a position 2mm to 3mm away from the pole piece cutting edge.

[0063] Install the vertical plate 9 on the shaft 1, install the horizontal plate 10 on the vertical plate 9, adjust the horizontal plate 10 up and down to a suitable position, and strengthen the fixation by the angle code 12, install the mounting seat 4 in the slide groove 7, and install the dust hood 6 and the wind knife 5 on both sides of the mounting seat 4. By adjusting the position of the mounting seat 4, the dust extraction port 22 of the dust extraction hood 6 is aligned with the cutting edge of the pole piece, and then adjust the height of the dust extraction hood 6 so that the dust extraction port 22 is 2mm to 4mm away from the pole piece. Then adjust the position of the guide ring 23 so that the guide surface 24 of the guide ring 23 is connected with the dust extraction port 22. Finally, adjust the angle of the wind knife 5 so that the air outlet of the wind knife 5 is aligned with the cutting edge of the pole piece, and then start the equipment to start dust removal.

[0064] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0065] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0066] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A dust removal device for a wound pole piece, characterized in that: include: A guide mechanism, the guide mechanism comprising a shaft (1), and a roller (2) rotatably connected to the shaft (1) and used to support the pole piece; A dust removal mechanism, the dust removal mechanism comprising a mounting frame (3) fixed on the shaft (1), the mounting frame (3) being provided with a mounting seat (4) which can be slidably adjusted in position along the axis direction of the shaft (1), and the two ends of the mounting seat (4) are respectively connected to a wind knife (5) and a dust hood (6).

2. The dust removal device for wound pole pieces according to claim 1, characterized in that: The mounting frame (3) is provided with a slide groove (7) for guiding the mounting seat (4), and the mounting frame (3) is provided with a first oblong hole (8) extending along the axial direction of the shaft rod (1), and a fastener for connecting the mounting seat (4) is provided in the first oblong hole (8).

3. The dust removal device for wound pole pieces according to claim 1, characterized in that: The mounting frame (3) comprises a vertical plate (9) connected to the shaft (1) and a horizontal plate (10) connected to the mounting seat (4); the vertical plate (9) is provided with a second oblong hole (11) extending vertically; a fastener for connecting the horizontal plate (10) is provided in the second oblong hole (11).

4. The dust removal device for wound pole pieces according to claim 3, characterized in that: An angle code (12) is fixed to one end of the horizontal plate (10) close to the vertical plate (9), and a third oblong hole (13) extending vertically is provided on the vertical plate (9), and a fastener for connecting the angle code (12) is provided in the third oblong hole (13).

5. The dust removal device for wound pole pieces according to claim 1, characterized in that: A clamping block (14) is provided at one end of the mounting frame (3) away from the mounting seat (4); both the clamping block (14) and the mounting frame (3) are provided with a semicircular groove (15) adapted to the shaft rod (1); the clamping block (14) and the mounting frame (3) are connected by fasteners to fix the mounting frame (3) on the shaft rod (1).

6. The dust removal device for wound pole pieces according to claim 1, characterized in that: The mounting seat (4) is provided with an angle adjustment structure for adjusting the direction of the air outlet of the wind knife (5); The angle adjustment structure comprises a first hinge seat (16) for connecting to the mounting seat (4), and a second hinge seat (17) mounted on the first hinge seat (16) and for connecting to the wind knife (5), wherein the first hinge seat (16) and the second hinge seat (17) are connected by a fastener so that the second hinge seat (17) can fix the rotation angle.

7. The dust removal device for wound pole pieces according to claim 6, characterized in that: The second hinge seat (17) is provided with a laser (18), and the laser (18) and the wind knife (5) have the same inclination angle in the vertical direction.

8. The dust removal device for wound pole pieces according to claim 1, characterized in that: The mounting seat (4) is provided with a height adjustment structure for adjusting the height of the dust hood (6); The height adjustment structure comprises a fixing block (19) for connecting to the mounting seat (4), and a connecting block (20) for connecting to the dust hood (6); the connecting block (20) is provided with a fourth oblong hole (21) extending vertically; a fastener for connecting to the fixing block (19) is provided in the fourth oblong hole (21).

9. The dust removal device for wound pole pieces according to claim 1, characterized in that: The dust extraction hood (6) has an arc-shaped dust extraction port (22), and the dust extraction port (22) is arranged along the circumferential outer edge of the roller (2).

10. The dust removal device for wound pole pieces according to claim 9, characterized in that: A guide ring (23) is provided on the outer peripheral surface of the roller (2), and a guide surface (24) for guiding air toward the dust extraction port (22) is provided on the guide ring (23).

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