Pole piece trimming device and pole piece production equipment

Abstract

The utility model relates to the field of pole piece production, and discloses a pole piece edge cutting device and pole piece production device.The pole piece edge cutting device comprises a first direction driving assembly, a second direction driving part, a mounting part, a cutter and a cutter, the first direction driving assembly is provided with two driven ends, and the two driven ends can move close to or away from each other; driven plates are installed at the driving end of the second direction driving part, the rotary adjusters are fixedly installed on the driven plates, two rotary adjusters are fixedly installed on each driven plate, and the driving ends of the rotary adjusters abut against the installation part. The two driven ends of the first direction driving assembly move close to each other or away from each other to adjust the transverse distance between the two cutters so as to meet the edge cutting requirements of pole pieces with different widths, and meanwhile, the rotary adjustor is used for symmetrically abutting against the mounting piece to drive the cutters to rotate around the rotating axis of the mounting piece so as to meet the edge cutting requirements. And material waste or waste edge residue caused by a fixed tool path is avoided, so that edge tearing and notch burrs of the pole piece are reduced.

Description

Technical Field

[0001] This application relates to the field of electrode production, and more particularly to an electrode trimming device and electrode production equipment. Background Technology

[0002] In the field of dry electrode fabrication, dry film-forming processes use powder materials to calender and form self-supporting films. The stability of this process directly affects the yield and performance consistency of the electrodes. However, due to the material's elongation characteristics and process fluctuations, jagged edges of varying widths and disordered shapes often form on both sides of the film during film formation. If these edges are not effectively removed, uneven thickness in the edge region during subsequent hot-pressing lamination with the current collector can easily lead to interfacial stress concentration, causing current collector wrinkles, breakage, or film delamination, severely affecting the mechanical strength and electrochemical performance of the battery electrode. Current conventional solutions use fixed cutting tools to cut the film edges in a straight line. However, because the shape of the edges dynamically changes due to process parameters and material properties, the fixed cutting path cannot match the actual contour trajectory of the edges. This not only results in excessive removal of effective film material or residual edges, leading to material waste and increased costs, but also causes problems such as film edge tearing and burrs due to deviation between the cutting path and the edge direction, further exacerbating the risk of interfacial bonding defects in the lamination process. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide an electrode trimming device and electrode production equipment.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] This application provides:

[0006] An electrode trimming device, comprising:

[0007] A first direction drive assembly has two driven ends, which are capable of moving closer to or further apart from each other;

[0008] A second directional drive member is fixedly mounted on the corresponding driven end, and a driven plate is mounted on the drive end of the second directional drive member;

[0009] Mounting component, which is rotatably mounted on the driven plate;

[0010] A cutting blade, which is mounted on the mounting component;

[0011] A rotary adjuster is fixedly mounted on the driven plate, and two rotary adjusters are fixedly mounted on each driven plate. The two rotary adjusters are symmetrically distributed about the rotation axis of the mounting member, and the drive end of the rotary adjuster abuts against the mounting member.

[0012] Furthermore, there is a gap between the driven plate and the mounting member, and two abutment blocks are provided on the mounting member. The abutment blocks are symmetrically distributed about the rotation axis of the mounting member, and the drive end of the rotation adjuster abuts against the corresponding abutment block.

[0013] Furthermore, the mounting component includes a connecting plate, on which a mounting block is fixedly mounted, and the cutter is fixedly mounted on the mounting block.

[0014] Furthermore, a waste extraction component is installed on the connecting plate, the waste extraction component has an extraction port, and a scraper is provided at the extraction port.

[0015] Furthermore, the waste extraction assembly includes a back plate, an extraction chamber shell is fixedly installed on one side of the back plate, the extraction port is located at the end of the extraction chamber shell away from the back plate, the shovel is fixedly installed on the extraction chamber shell, an extraction tube is provided on the side of the back plate away from the extraction chamber shell, the extraction tube communicates with the extraction chamber shell, and a connecting assembly is also provided on the back plate, the back plate is installed to the mounting block through the connecting assembly.

[0016] Furthermore, the connecting assembly includes a connecting block disposed on the back plate, a connecting rod disposed on one side of the connecting block, the connecting rod being connected to the mounting block, and the connecting block having a connecting hole and an adjustment hole for connecting with the connecting rod.

[0017] Furthermore, the adjustment hole is an oblong hole.

[0018] Furthermore, a rotating shaft is rotatably mounted on the mounting block, the rotating shaft is connected to the connecting rod, a first limiting block is fixedly provided on the connecting plate, and a second limiting block is fixedly provided on the mounting block. The first limiting block and the second limiting block are on the same side and define a receiving groove, through which the connecting rod passes.

[0019] Furthermore, the first directional drive assembly includes a mounting frame, on which a first movable frame and a second movable frame are slidably mounted. A first lead screw and a second lead screw are rotatably mounted on the mounting frame. The first lead screw and the second lead screw are drive-connected, the first lead screw is drive-connected to the first movable frame, and the second lead screw is drive-connected to the second movable frame. A rotary drive component is also mounted on the mounting frame. The rotary drive component is drive-connected to either the first lead screw or the second lead screw. The first lead screw and the second lead screw rotatably drive the first movable frame and the second movable frame to move closer to or further away from each other.

[0020] This application also provides an electrode production apparatus, which includes the electrode trimming device described in any of the above claims.

[0021] This application adjusts the lateral spacing of the two cutters by moving the two driven ends of the first direction drive component closer to or further apart from each other to adapt to the cutting edge requirements of electrode sheets of different widths. At the same time, the rotary adjuster symmetrically abuts against the mounting member to drive the cutter to rotate around the rotation axis of the mounting member to adapt to the cutting edge requirements, avoiding material waste or waste edge residue caused by fixed cutter rail, thereby reducing electrode edge tearing and cut burrs.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the overall structure of the edge-cutting device of this application is shown;

[0025] Figure 2 A schematic diagram of the explosion state of the edge-cutting device of this application is shown;

[0026] Figure 3 This paper presents a schematic diagram of the second-direction drive component, mounting component, rotation adjuster, waste extraction assembly, and blade assembly structure of this application.

[0027] Figure 4 This paper presents a schematic diagram of the second direction drive component, mounting component, rotation adjuster, waste extraction assembly, and the shovel blade in an exploded state according to this application.

[0028] Figure 5A schematic diagram of the waste extraction component structure of this application is shown;

[0029] Figure 6 A schematic diagram of the structure of the first directional drive component of this application is shown.

[0030] Explanation of key component symbols:

[0031] 100-First direction drive assembly; 110-Mounting bracket; 120-First moving bracket; 130-Second moving bracket; 140-First lead screw; 150-Second lead screw; 160-Rotation drive component; 200-Second direction drive component; 210-Driven plate; 300-Mounting component; 310-Connecting plate; 320-Mounting block; 330-Rotating shaft; 340-First limiting block; 350-Second limiting block; 360-Accommodation slot; 400-Cutter; 500-Rotation adjuster; 600-Abutment block; 700-Waste extraction assembly; 710-Back plate; 720-Extraction cavity shell; 721-Extraction port; 730-Extraction tube; 740-Connecting assembly; 741-Connecting block; 742-Connecting rod; 743-Connecting hole; 744-Adjusting hole; 800-Shovel blade. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] This application provides an electrode trimming device, which includes a first direction drive assembly 100, a second direction drive member 200, a mounting member 300, a cutter 400, and a rotation adjuster 500. Specifically, the first direction drive assembly 100 has two driven ends that can move closer to or further away from each other. The second direction drive member 200 is fixedly mounted on its corresponding driven end. A driven plate 210 is mounted on the drive end of the second direction drive member 200. The mounting member 300 is rotatably mounted on the driven plate 210. The cutter 400 is mounted on the mounting member 300. The rotation adjuster 500 is fixedly mounted on the driven plate 210, and two rotation adjusters 500 are fixedly mounted on each driven plate 210. The two rotation adjusters 500 are symmetrically distributed about the rotation axis of the mounting member 300, and the drive end of the rotation adjuster 500 abuts against the mounting member 300.

[0038] See Figure 1 and Figure 2The driven plate 210 mounted on its driven end is adjusted to move closer or further apart by the first direction drive component 100, thereby adjusting the distance between the two cutters 400. This allows for the cutting of electrode sheets of different widths to meet the required width. Furthermore, to adapt to different electrode processes by adjusting the cutting trajectory of the electrode edge, the mounting component 300 for mounting the cutter 400 is rotatably connected to the driven plate 210, and two rotation adjusters 500 are mounted on each driven plate 210. By distributing the two rotation adjusters 500 about the rotation axis of the mounting component 300, the rotation and angle of the mounting component 300 can be adjusted by the extension and retraction of the two rotation adjusters 500. This also allows for the adjustment of the angle between the cutter 400 and the roller surface, enabling the cutter 400 to adapt to different production processes.

[0039] It is understandable that the two rotary adjusters 500 are located on the same side at the two ends of the mounting piece 300. When one of them extends, the other can retract synchronously, thereby enabling the mounting piece 300 and the cutter 400 to rotate and the angle of the cutter 400 to be adjusted.

[0040] In this embodiment, the rotary adjuster 500 is a micrometer head. In other embodiments, the rotary adjuster 500 can also be other adjustment components. For example, the motor can be directly mounted on the driven plate 210, and the rotation shaft of the motor can be directly connected to the rotation shaft of the mounting component 300. The rotation angle of the mounting component 300 and the cutter 400 can be controlled by the motor. In order to improve the control accuracy, a servo motor can be selected.

[0041] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, in this embodiment, the first direction mentioned above is the lateral direction, that is... Figure 1 The X direction shown above, and the second direction mentioned above, is the longitudinal direction, i.e. Figure 1 The Z direction is shown in the diagram.

[0042] For example, the second direction drive component 200 can be a cylinder, a linear drive module or other linear drive components. In practice, it can be selected and used as needed, and no specific restrictions are made here.

[0043] In this embodiment, the second directional driving member 200 drives the cutter 400 mounted on the mounting member 300 to move toward the roller surface, so that the cutter 400 and the roller surface maintain a predetermined distance. This ensures that the electrode can be cut while not contacting the roller surface, thereby preventing damage to the cutter 400 and the roller surface, and preventing powder from being mixed into the electrode due to roller surface scratches or cutter 400 damage.

[0044] In some embodiments, there is a gap between the driven plate 210 and the mounting member 300, and two abutment blocks 600 are provided on the mounting member 300. The abutment blocks 600 are symmetrically distributed about the rotation axis of the mounting member 300, and the drive end of the rotation adjuster 500 abuts against the corresponding abutment block 600.

[0045] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, in this embodiment, in order to achieve precise adjustment of the rotation angle of the mounting member 300 and the cutter 400, two abutment blocks 600 corresponding to the position of the rotation adjuster 500 are provided in the gap between the mounting member 300 and the driven plate 210. Specifically, the abutment blocks 600 can be integrally formed with the mounting member 300. The adjustment end of the rotation adjuster 500 extends into the gap and abuts against the abutment blocks 600. Power can be transmitted to the mounting member 300 through the abutment blocks 600 to achieve the adjustment of the mounting member 300 and the cutter 400.

[0046] Mounting component 300 includes a connecting plate 310, on which a mounting block 320 is fixedly mounted, and a cutter 400 is fixedly mounted on the mounting block 320.

[0047] See Figure 4 As shown, in order to achieve overall rotation of the mounting component 300, the main body of the mounting component 300 is divided into two parts: a connecting plate 310 and a mounting block 320. The connecting plate 310 is rotatably connected to the driven plate 210, and the mounting block 320 is fixedly connected to the connecting plate 310. The mounting block 320 can also rotate with the connecting plate 310. Furthermore, in this embodiment, the abutment block 600 is fixedly disposed on the upper surface of the connecting plate 310. Specifically, the abutment block 600 can be integrally formed on the upper surface of the connecting plate 310. Of course, the abutment block 600 can also be installed on the connecting plate 310 by bolt connection. The cutter 400 is fixedly installed on the mounting block 320. The cutter 400 and the mounting block 320 are rotatably connected to the driven plate 210 through the connecting plate 310. The rotation angle of the connecting plate 310, the mounting block 320, and the cutter 400 can be adjusted by two rotation adjusters 500.

[0048] A waste extraction component 700 is installed on the connecting plate 310. The waste extraction component 700 has an extraction port 721, and a scraper 800 is provided at the extraction port 721.

[0049] To prevent the removed waste material from remaining on the roller, it is necessary to remove and clean it up promptly. This application uses a scraper 800 to scrape off the waste material on the roller first, and then uses negative pressure extraction to suck up and clean the waste material. Specifically, the extraction port 721 is connected through a negative pressure generating device. When the scraper 800 scrapes off the waste material on the roller, the waste material will enter the extraction port 721 under the action of negative pressure and then be sucked away, keeping the roller surface clean.

[0050] The waste extraction assembly 700 includes a back plate 710, an extraction chamber shell 720 fixedly installed on one side of the back plate 710, an extraction port 721 located at the end of the extraction chamber shell 720 away from the back plate 710, a scraper 800 fixedly installed on the extraction chamber shell 720, an extraction tube 730 provided on the side of the back plate 710 away from the extraction chamber shell 720, the extraction tube 730 communicating with the extraction chamber shell 720, and a connecting assembly 740 also provided on the back plate 710, the back plate 710 being installed with the mounting block 320 through the connecting assembly 740.

[0051] Please see Figure 3 , Figure 4 as well as Figure 5 As shown, the back plate 710 is connected to the mounting block 320 through the connecting component 740, thereby enabling the back plate 710, the extraction cavity shell 720, and the extraction tube 730 to move along with the rotation of the mounting block 320. This ensures that the scraper 800 and the extraction port 721 are always located at the position of the mounting component 300, ensuring that the scraper 800 can immediately remove the cut waste material after the mounting component 300 cuts the edge, and then the waste material is sucked away through the extraction port 721, ensuring the cleanliness of the roller surface.

[0052] Understandably, the extraction tube 730 is connected to an external negative pressure suction device, which sucks away the scraped waste through the suction channel formed by the extraction chamber shell 720 and the extraction tube 730.

[0053] The connecting assembly 740 includes a connecting block 741 disposed on the back plate 710. A connecting rod 742 is disposed on one side of the connecting block 741. The connecting rod 742 is connected to the mounting block 320. The connecting block 741 is provided with a connecting hole 743 for connecting with the connecting rod 742 and an adjustment hole 744. The adjustment hole 744 is an elongated hole.

[0054] See Figure 3 , Figure 4 as well as Figure 5As shown, the back plate 710 is mounted on the mounting block 320 via a connecting assembly 740. Specifically, the back plate 710 has a connecting block 741, which is fixedly connected to a connecting rod 742. The connecting rod 742 is connected to the mounting block 320. That is, the back plate 710 is connected to the mounting block 320 via the transmission of the connecting block 741 and the connecting rod 742. To enable the angle adjustment of the scraper 800 to fully contact the roller surface for scraping, a connecting hole 743 and an adjusting hole 744 are provided on the connecting block 741. A pin can be inserted into the connecting hole 743 for rotatable connection with the connecting rod 742. A bolt can be installed in the adjusting hole 744 for fixed connection with the connecting rod 742. The connecting block 741 and the connecting rod 742 are fixedly connected by the tightening force of the bolt. It can be understood that since the adjusting hole 744 is an elongated oval hole, it can specifically be an arc-shaped elongated oval hole (e.g., Figure 5 As shown), the connecting block 741 can be adjusted in angle with the pin in the connecting hole 743 as the rotation centerline. After adjustment, the connecting block 741 and the connecting rod 742 are fixedly connected by the bolt in the adjusting hole 744.

[0055] A rotating shaft 330 is rotatably mounted on the mounting block 320. The rotating shaft 330 is connected to the connecting rod 742. A first limiting block 340 is fixedly provided on the connecting plate 310. A second limiting block 350 is fixedly provided on the mounting block 320. The first limiting block 340 and the second limiting block 350 are on the same side and limit each other to form a receiving groove 360. The connecting rod 742 passes through the receiving groove 360.

[0056] See Figure 4 and Figure 5 As shown, the end of the connecting rod 742 away from the connecting block 741 is rotatably connected to the rotating shaft 330 on the mounting block 320. The connecting rod 742 can rotate at a certain angle relative to the rotating shaft 330, making it easier for the scraper 800 to fit against the roller surface to remove waste. The rotation angle of the connecting rod 742 is limited by setting the first limiting block 340 and the second limiting block 350.

[0057] The first direction drive assembly 100 includes a mounting frame 110, on which a first movable frame 120 and a second movable frame 130 are slidably mounted. A first lead screw 140 and a second lead screw 150 are rotatably mounted on the mounting frame 110. The first lead screw 140 and the second lead screw 150 are connected in a transmission manner. The first lead screw 140 is connected in a transmission manner to the first movable frame 120, and the second lead screw 150 is connected in a transmission manner to the second movable frame 130. A rotary drive component 160 is also mounted on the mounting frame 110. The rotary drive component 160 is connected in a transmission manner to the first lead screw 140 or the second lead screw 150. The rotation of the first lead screw 140 and the second lead screw 150 drives the first movable frame 120 and the second movable frame 130 to move closer to each other or further apart.

[0058] See Figure 1 , Figure 2 as well as Figure 6 As shown, in this embodiment, the first movable frame 120 and the second movable frame 130 move closer to each other or further apart by means of positive and negative lead screws. Specifically, the first movable frame 120 and the second movable frame 130 are slidably mounted on the mounting frame 110, and then the first movable frame 120 and the second movable frame 130 are respectively connected to the first movable frame 120 and the second movable frame 130 by means of first lead screw 140 and second lead screw 150. In order to enable the first lead screw 140 and the second lead screw 150 to rotate synchronously, the first lead screw 140 and the second lead screw 150 are connected by means of a coupling. The components are coaxially connected, enabling the first lead screw 140 and the second lead screw 150 to rotate synchronously. It should be noted that in order for the first moving frame 120 and the second moving frame 130 to move closer to or further apart from each other, the threads of the first lead screw 140 and the second lead screw 150 are opposite in direction. In this embodiment, the first lead screw 140 is driven to rotate by the rotary drive component 160, thereby synchronously driving the second lead screw 150 to rotate. In other embodiments, the second lead screw 150 can also be driven to rotate by the rotary drive component 160, thereby driving the first lead screw 140 to rotate. In practice, the appropriate method can be selected as needed.

[0059] For example, the rotary drive component 160 can be a rotary drive component such as a motor or electric motor. In this embodiment, the rotary drive component 160 can be selected as a servo motor.

[0060] This application also provides an electrode production equipment, which includes the electrode trimming device described in any of the above embodiments.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electrode tab trimming device, characterized by, The utility model relates to a cutting device for cutting plate, including: First direction drive assembly (100), first direction drive assembly (100) have two driven ends, two the driven end can move mutually close or away from each other; Second direction drive piece (200), second direction drive piece (200) fixed mounting is in with it corresponding driven end, and the drive end of second direction drive piece (200) is installed with driven plate (210); Mounting piece (300), mounting piece (300) rotation is installed in driven plate (210); Cutter (400), cutter (400) are installed to mounting piece (300); Rotary regulator (500), rotary regulator (500) fixed mounting is in driven plate (210), and each driven plate (210) fixed mounting has two rotary regulators (500), two rotary regulators (500) about the rotation axis of mounting piece (300) symmetry distribution, and the drive end of rotary regulator (500) abuts to mounting piece (300).

2. The pole piece trimming device of claim 1, wherein Driven plate (210) and mounting piece (300) between have gap, and the mounting piece (300) is provided with two abutment block (600), and the abutment block (600) about the rotation axis of mounting piece (300) symmetry distribution, and the drive end of rotary regulator (500) abuts to with it corresponding abutment block (600).

3. The pole piece trimming device of claim 1, wherein Mounting piece (300) includes connecting plate (310), and the mounting block (320) is fixedly installed on connecting plate (310), and the cutter (400) is fixedly installed on the mounting block (320).

4. The pole piece trimming device of claim 3, wherein Connecting plate (310) is installed with waste extraction assembly (700), and waste extraction assembly (700) has extraction port (721), and the extraction port (721) position is provided with spade (800).

5. The pole piece trimming device of claim 4, wherein, Waste extraction assembly (700) includes backboard (710), and the extraction cavity shell (720) is fixedly installed on one side of backboard (710), and the extraction port (721) is arranged at the end of the extraction cavity shell (720) away from the backboard (710), and the spade (800) is fixedly installed on the extraction cavity shell (720), and one side of the backboard (710) away from the extraction cavity shell (720) is provided with extraction pipe (730), and the extraction pipe (730) is communicated with the extraction cavity shell (720), and the backboard (710) is further provided with connecting assembly (740), and the backboard (710) is installed with the mounting block (320) through the connecting assembly (740).

6. The pole piece trimming device of claim 5, wherein Connecting assembly (740) includes connecting block (741) provided on backboard (710), and one side of connecting block (741) is provided with connecting rod (742), and the connecting rod (742) is connected with the mounting block (320), and the connecting hole (743) for being connected with the connecting rod (742) and the adjusting hole (744) are formed in the connecting block (741).

7. The pole piece trimming device of claim 6, wherein The adjusting hole (744) is a long circular hole.

8. The pole piece trimming device according to claim 6 or 7, characterized in that A rotating shaft (330) is rotatably installed on the mounting block (320), the rotating shaft (330) is connected with the connecting rod (742), the connecting plate (310) is fixedly provided with a first limiting block (340), the mounting block (320) is fixedly provided with a second limiting block (350), the first limiting block (340) and the second limiting block (350) are on the same side and define a containing groove (360), and the connecting rod (742) passes through the containing groove (360).

9. The pole piece trimming apparatus of claim 1, wherein The first direction driving assembly (100) comprises a mounting frame (110), a first moving frame (120) and a second moving frame (130) are slidably installed on the mounting frame (110), a first lead screw (140) and a second lead screw (150) are rotatably installed on the mounting frame (110), the first lead screw (140) is in driving connection with the second lead screw (150), the first lead screw (140) is in driving connection with the first moving frame (120), the second lead screw (150) is in driving connection with the second moving frame (130), and a rotary driving piece (160) is further installed on the mounting frame (110) and is in driving connection with the first lead screw (140) or the second lead screw (150), the first lead screw (140) and the second lead screw (150) rotatably drive the first moving frame (120) and the second moving frame (130) to move close to or away from each other.

10. An electrode tab production apparatus characterized by comprising: The pole piece trimming device of any one of claims 1 to 9.

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