A cutting device and a dry coating apparatus

Abstract

The utility model discloses a cutting device and dry method coating equipment. The cutting device is used for cutting the product of roller transmission, and the cutting device includes support, cutting knife and first driving part, and the cutting knife is slidably connected with the support along the first direction, and the first direction is tangent to the circumferential direction of the roller, and the cutting edge of the cutting knife extends along the first direction, and the first driving part is connected with the cutting knife and is used for driving the cutting knife to reciprocate relative to the support along the first direction. In the process of cutting, the cutting device can effectively avoid the situation that the cutting knife is blocked, prevents the situation that the electrode film appears burrs after edge cutting due to the cutting knife being blocked, improves the cutting quality, and is beneficial to the improvement of the quality of the pole piece formed by the electrode film and the current collector.

Description

Technical Field

[0001] This utility model relates to the technical field of dry coating equipment, and in particular to a cutting device and dry coating equipment. Background Technology

[0002] Dry coating of electrodes is one of the important steps in the lithium-ion battery manufacturing process. In the dry coating process, after the electrode film is rolled, the edges will produce fragments. These fragments are prone to folding and sticking to the rollers. To prevent the bonding quality between the electrode film and the current collector from being affected by fragment folding and sticking to the rollers, the fragments need to be trimmed.

[0003] In related technologies, the edges of an electrode film can be cut using a cutting device. This device includes a cutter that cuts the edges of the electrode film. The cutter is typically either a circular cutter or a square cutter. The square cutter is fixedly mounted on a mounting base of the cutting device. During cutting, the electrode film passes through the square cutter while being conveyed by rollers, thus achieving the cutting of the electrode film's edges.

[0004] However, the square cutter is stationary relative to the mounting base, resulting in a low relative speed between the cutter and the electrode film. This leads to a longer contact time between the electrode film and the cutter, which can easily cause the cutter and the electrode film to stick together, resulting in material blockage in the cutter. Consequently, when the cutter continues to cut the electrode film, burrs may appear on the cut edges of the electrode film. Utility Model Content

[0005] This application discloses a cutting device and a dry coating equipment. During the cutting of the edge of the electrode film, the cutting device can effectively avoid the cutting blade from clogging, thus preventing burrs from appearing on the electrode film after cutting due to the cutting blade clogging. This improves the cutting quality of the cutting device and is beneficial to improving the quality of the electrode sheet.

[0006] To achieve the above objectives, in a first aspect, embodiments of this application disclose a cutting device for cutting products conveyed by rollers, the cutting device comprising:

[0007] support;

[0008] A cutter, which is slidably connected to the bracket along a first direction, the first direction being tangent to the circumferential direction of the roller, and the cutting edge of the cutter extending along the first direction;

[0009] A first driving component is connected to the cutter.

[0010] Optionally, the cutting device further includes a crank-slider assembly, through which the first drive member is connected to the cutter.

[0011] Optionally, the first driving component includes a motor, the crank-slider assembly includes a mounting base, a connecting rod, and a rotating wheel, the cutter is disposed on the mounting base, the mounting base is slidably disposed on the bracket along the first direction, one end of the connecting rod is rotatably connected to the mounting base, the rotating wheel has a connection position off-center from its center, the other end of the connecting rod is rotatably connected to the connection position of the rotating wheel, and the output shaft of the motor is connected to the center of the rotating wheel.

[0012] Optionally, the connecting rod is rotatably connected to the mounting base via a rotating shaft, and the rotating shaft and the center of the rotating wheel are arranged along the first direction.

[0013] Optionally, the cutting device further includes a mounting base, which is slidably disposed on the bracket along the first direction, and the cutter is disposed on the mounting base;

[0014] The first driving element includes any one of a piezoelectric actuator, an electric cylinder, and a pneumatic cylinder. The output end of any one of the piezoelectric actuator, the electric cylinder, and the pneumatic cylinder is connected to the mounting base and is used to drive the mounting base to reciprocate relative to the bracket along the first direction.

[0015] Optionally, the cutting device further includes a guide rail and a slider, the guide rail extending along the first direction and disposed on the bracket, the slider being connected to the cutter and slidably connected to the guide rail.

[0016] Optionally, the support includes a first support and a second support, the second support being slidably connected to the first support along a second direction, the second direction being perpendicular to the first direction and the axial direction of the roller, and the cutter being located on the second support and slidably connected to the second support along the first direction;

[0017] The cutting device further includes:

[0018] A detection element is fixedly disposed relative to the cutter, and the detection element is used to detect whether the cutter and the roller are in contact along the second direction;

[0019] The second driving member is connected to the second bracket and is used to drive the second bracket to move relative to the first bracket along the second direction.

[0020] Optionally, the detection element includes at least one of a pressure sensor, a displacement sensor, and an ultrasonic sensor.

[0021] Optionally, the cutter is arranged with the second bracket along the second direction, and when the detection element includes a pressure sensor, the pressure sensor is located between the cutter and the second bracket.

[0022] Optionally, the second driving component includes any one of an electric cylinder, an electric displacement platform, and a slide.

[0023] Optionally, the cutting device further includes a base and a third driving member, wherein the bracket is slidably connected to the base along the axial direction of the roller, and the third driving member is connected to the bracket for driving the bracket to move along the axial direction of the roller.

[0024] Secondly, embodiments of this application also disclose a dry coating apparatus, comprising:

[0025] A roller for transferring an electrode film;

[0026] The cutting device according to any one of the first aspects, wherein the cutter is located on the radial side of the roller and near the axial end of the roller, the cutter being used to cut the edge of the electrode film conveyed by the roller.

[0027] Compared with the prior art, this application has at least the following beneficial effects:

[0028] In this application, a cutter is slidably connected to a support along a first direction, and the blade of the cutter extends along the first direction. A first driving member is connected to the cutter to drive the cutter to reciprocate relative to the support along the first direction. When cutting by the cutting device, the first driving member can drive the cutter to move repeatedly along the first direction, so that the contact time between the blade of the cutter and the same position of the product to be cut can be shorter, thereby effectively preventing the cutter from sticking to the product to be cut and avoiding material blockage on the blade. This effectively prevents burrs from appearing on the cut edge of the product after cutting due to material blockage on the cutter. Therefore, when the cutting device cuts the electrode film, it can effectively improve the cutting quality of the electrode film and improve the quality of the electrode sheet formed by laminating the electrode film with the current collector. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the first cutting device provided in this application, with the cutter located at the cutting position;

[0031] Figure 2 This is a schematic diagram of the structure of the second cutting device provided in this application, where the cutter is located at the cutting position;

[0032] Figure 3 This is a schematic diagram of the third cutting device provided in this application, showing the cutter located at the cutting position;

[0033] Figure 4 This is a top view of a cutting device provided in an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the structure of a cutting device in a dry coating equipment provided in this application, when cutting an electrode film traveling on a roller.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Support; 11-First support; 12-Second support;

[0037] 2-Cut knife;

[0038] 3-First driving component;

[0039] 4-Crank-slider assembly; 41-Mounting base; 42-Connecting rod; 43-Roller;

[0040] 5a - Guide rail; 5b - Slider;

[0041] 6-Inspection Items;

[0042] 7-Second driving component;

[0043] 8-Cutter Seat;

[0044] 9-Third driving component;

[0045] 100 - Dry coating equipment; 10 - Cutting device; 20 - Roller;

[0046] 200-Electrode film. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0049] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0050] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0051] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0052] In view of the problems described in the background art, this application discloses a cutting device and a dry coating equipment. During the cutting of the edge of the electrode film, the cutting device can effectively avoid the cutting blade from clogging, and prevent the electrode film from having burrs after cutting due to the cutting blade clogging. This improves the cutting quality of the cutting device and is beneficial to improving the quality of the electrode sheet.

[0053] The technical solution of this application will be described in detail below with reference to specific embodiments and accompanying drawings.

[0054] This application provides a cutting device, such as... Figure 1 As shown, the cutting device 10 is used to cut the product conveyed by the roller 20. The cutting device 10 includes a support 1, a cutter 2, and a first driving member 3, wherein the cutter 2 moves along a first direction (e.g., ...). Figure 1The first direction (in the direction shown by x) is slidably connected to the support 1, and the first direction is tangent to the circumferential direction of the roller 20. The blade of the cutter 2 extends along the first direction. The first driving member 3 is connected to the cutter 2 and is used to drive the cutter 2 to reciprocate relative to the support 1 along the first direction.

[0055] In this embodiment, the product conveyed by the roller 20 is cut by the cutter 2 in the cutting device 10. When the roller 20 conveys the product, such as when the roller 20 conveys the electrode film, the edge part of the electrode film can be cut by the cutter 2 so that the edge of the cut electrode film can be flat, so that the quality of the cut electrode film after lamination with the current collector can be high.

[0056] In related technologies, the cutter can be either a circular cutter or a square cutter. When the cutter is a circular cutter, it can be mounted on a mounting base via a cutter shaft. The cutter shaft and the mounting base are connected by a bearing, allowing the circular cutter to rotate around the central axis of the cutter shaft during the cutting process. This results in a shorter contact time between the circular cutter and the product to be cut. However, when the cutter is a square cutter, it is fixed on the mounting base. During the cutting process, the square cutter is stationary relative to the mounting base, while the electrode film moves relative to the mounting base. This can easily lead to a lower relative speed between the cutter and the product to be cut, resulting in a longer contact time. Consequently, the cutter is prone to sticking to the product, causing material blockage. This, in turn, leads to burrs on the cut edges of the product. When the product to be cut is an electrode film, this is detrimental to improving the quality of the electrode sheet formed after the electrode film and current collector are laminated.

[0057] Based on this, the cutter 2 is slidably connected to the support 1 along the first direction, and the blade of the cutter 2 extends along the first direction; the first driving member 3 is connected to the cutter 2 to drive the cutter 2 to reciprocate relative to the support 1 along the first direction. When cutting by the cutting device 10, the first driving member 3 can drive the cutter 2 to move repeatedly along the first direction, so that the contact time between the blade of the cutter 2 and the same position of the product to be cut can be shorter, thereby effectively preventing the cutter 2 from sticking to the product to be cut, avoiding the blade of the cutter 2 from being blocked, and thus effectively preventing the product from having burrs on the cut edge after cutting due to the blockage of the cutter 2. Therefore, when the cutting device 10 cuts the electrode film, it can effectively improve the cutting quality of the electrode film, which is beneficial to improving the quality of the electrode sheet formed by the electrode film and the current collector.

[0058] The blade of the cutter 2 extends along the first direction. The cutter 2 can be a square cutter or a cutter of other shapes with the blade extending along the first direction.

[0059] The products conveyed by the roller 20, which can be cut by the cutting device 10, can be electrode films, paper, cloth, electrode sheets, current collectors, etc., and are not limited here. The following is a detailed description of the cutting of electrode films by the cutting device 10 as an example.

[0060] Optionally, such as Figure 1 As shown, the cutting device 10 also includes a crank-slider assembly 4, and the first drive member 3 is connected to the cutter 2 through the crank-slider assembly 4.

[0061] Therefore, the rotational motion of the first drive member 3 can be converted into the reciprocating motion of the cutter 2 along the first direction through the crank-slider assembly 4, and the energy loss during the transmission process is small, thus achieving efficient energy transfer.

[0062] The crank-slider assembly 4 can be implemented in various ways. In one possible implementation, the crank-slider assembly 4 may include a first connecting rod, a second connecting rod, a third connecting rod, a connecting seat, and a mounting seat 41. The mounting seat 41 is slidably disposed on the bracket 1 along a first direction, and the connecting seat is fixedly disposed on the bracket 1. The driving end of the first driving member 3 is connected to one end of the first connecting rod, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, and the other end of the third connecting rod is rotatably connected to the mounting seat 41. The portion of the second connecting rod located between its two ends is provided with an elongated slot. The second connecting rod is slidably connected to the connecting seat through the elongated slot, and the elongated slot extends along the extension direction of the second connecting rod. The connecting seat and the mounting seat 41 are arranged along the first direction, that is, the second connecting rod is located on one side of the mounting seat 41 along the first direction, and the first connecting rod and the third connecting rod are both located on the side of the second connecting rod facing the mounting seat 41. When the first driving member 3 drives the first connecting rod to reciprocate along the first horizontal direction, it can drive the second connecting rod to rotate relative to the connecting seat and slide relative to the connecting seat at the same time. The second connecting rod drives the third connecting rod to move, and then the second connecting rod drives the mounting seat 41 to reciprocate along the first direction relative to the frame, so as to realize the reciprocating movement of the cutter 2 along the first direction.

[0063] The first driving component 3 can be any of a piezoelectric actuator, an electric cylinder, or a pneumatic cylinder, and there is no limitation on it, as long as the first driving component 3 can drive the first connecting rod 42 to reciprocate along the first direction.

[0064] In another implementation of the crank-slider assembly 4, such as Figure 1As shown, the first driving component 3 includes a motor, and the crank-slider assembly 4 includes a mounting base 41, a connecting rod 42, and a rotating wheel 43. The cutter 2 is disposed on the mounting base 41, which is slidably disposed on the bracket 1 along a first direction. One end of the connecting rod 42 is rotatably connected to the mounting base 41. The rotating wheel 43 has a connection position offset from its center. The other end of the connecting rod 42 is rotatably connected to the connection position of the rotating wheel 43. The output shaft of the motor is connected to the center of the rotating wheel 43 and is used to drive the rotating wheel 43 to rotate around its center, thereby driving the other end of the connecting rod 42 to rotate around the center of the rotating wheel 43.

[0065] This makes the crank-slider assembly 4 simple in structure, easy to manufacture, and easy to replace after wear, resulting in low maintenance costs.

[0066] For example, when the cutter 2 cuts the electrode film, the motor starts and drives the rotating wheel 43 to rotate. The rotating wheel 43 drives the other end of the connecting rod 42 to rotate around the center of the rotating wheel 43, so that the connecting rod 42 drives the mounting base 41 to move back and forth in the first direction, thereby driving the cutter 2 to move back and forth in the first direction, so as to achieve high-quality cutting of the electrode film.

[0067] In other embodiments, the wheel 43 can also be a rotating rod, that is, one end of the rotating rod is connected to the output shaft of the motor, and the other end is rotatably connected to the other end of the connecting rod 42. The rotating rod extends in a direction perpendicular to the output shaft. Similarly, after the motor is started, it can drive the mounting base 41 to move back and forth in the first direction, and the structure is simple.

[0068] Optionally, the connecting rod 42 is rotatably connected to the mounting base 41 via a rotating shaft, and the centers of the rotating shaft and the rotating wheel 43 are arranged along a first direction.

[0069] Therefore, the speed at which the cutter 2 moves along the first horizontal direction to each position can be relatively consistent, and the relative speed between the cutter 2 and the transmitted electrode film can be relatively uniform, thereby enabling the cutter 2 to have a better stability in cutting the electrode film.

[0070] Of course, in other embodiments, the center of the rotating shaft and the rotating wheel 43 may not be arranged along the first direction. For example, when the first direction is horizontal, the rotating shaft may be located slightly above or slightly below the center of the rotating wheel 43. This allows the cutter 2 to have a quick return function, and also allows for a shorter contact time between the cutter 2 and the electrode film.

[0071] In other embodiments, such as the first driving element 3 described above, Figure 2As shown, the first driving member 3 may include any one of a piezoelectric driving member, an electric cylinder, and a pneumatic cylinder. In this case, the cutting device 10 also includes a mounting base 41, which is slidably disposed on the bracket 1 along the first direction, and the cutter 2 is disposed on the mounting base 41. The first driving member 3 is connected to the mounting base 41 to drive the mounting base 41 to reciprocate relative to the bracket 1 along the first direction.

[0072] Therefore, the mounting base 41 can be directly driven to reciprocate along the first direction by the first driving component 3, so as to realize the reciprocating movement of the cutter 2 along the first direction. The structure is simple and easy to implement.

[0073] When the first driving member 3 includes a piezoelectric driving member, the movement of the cutter 2 along the first direction can have high precision. Of course, when the first driving member includes an electric cylinder or a pneumatic cylinder, and the electric cylinder or pneumatic cylinder is a high-precision electric cylinder or pneumatic cylinder, the movement of the cutter 2 along the first direction can also have high precision.

[0074] In some embodiments, the cutting device 10 may further include a guide assembly disposed between the cutter 2 and the support 1 for guiding the cutter 2 to move along a first direction.

[0075] Optionally, such as Figure 1 and Figure 2 As shown, the guide assembly may include a guide rail 5a and a slider 5b. The guide rail 5a extends along a first direction and is disposed on the bracket 1. The slider 5b is connected to the cutter 2 and is slidably connected to the guide rail 5a.

[0076] Therefore, the movement of the cutter 2 along the first direction can be guided by the cooperation of the guide rail 5a and the slider 5b. At the same time, the structure of the guide assembly can be relatively simple and easy to implement.

[0077] When the cutting device 10 also includes a cutter holder 8, the cutter 2 can be set on the cutter holder 8, and the cutter holder 8 is set on the slider 5b. In this case, the cutter holder 8 can be set on the slider 5b by means of threaded pair or welding, so as to facilitate the fixed setting of the cutter 2 relative to the slider 5b.

[0078] In other embodiments, the guiding component may include a linear guide rail, which includes a guide rail, a slider, and a ball bearing. The guide rail extends along a first direction, and the ball bearing is located between the slider and the guide rail, so that there is rolling friction between the slider and the guide rail, achieving low-friction sliding between the slider and the guide rail. This allows the cutter 2 to move back and forth smoothly along the first direction, and the movement of the cutter 2 along the first direction can have high motion accuracy.

[0079] In other embodiments, such as Figure 3 As shown, the bracket 1 includes a first bracket 11 and a second bracket 12, the second bracket 12 being along a second direction (e.g., Figure 3 The cutting device 10 includes a second direction (indicated by the direction y) that is slidably connected to the first support 11. The second direction is perpendicular to both the first direction and the axial direction of the roller 20. The cutter 2 is located on the second support 12 and is slidably connected to the second support 12 along the first direction. The cutting device 10 also includes a detection element 6 and a second driving element 7. The detection element 6 is fixedly disposed relative to the cutter 2 and is used to detect whether the cutter 2 and the roller 20 are in contact along the second direction. The second driving element 7 is connected to the second support 12 and is used to drive the second support 12 to move relative to the first support 11 along the second direction.

[0080] Therefore, the detection element 6 enables the second driving element 7 to drive the cutter 2 to move in the second direction with high precision, so that the cutting position of the cutter 2 can be adjusted more precisely. This ensures that the cutter 2 cuts the electrode film and has good cutting quality, while also allowing a gap between the cutter 2 and the roller 20 to prevent the cutter 2 from contacting the roller 20 and scratching it.

[0081] For example, when it is necessary to adjust the cutting position of the cutter 2, the second driving member 7 can drive the second support 12 to move closer to the roller 20 along the second direction, so as to drive the cutter 2 to move towards the space roller 20 along the second direction until the detection member 6 detects that the cutter 2 is in contact with the roller 20. Then the second driving member 7 stops driving the cutter 2 to continue moving closer to the roller 20 along the second direction. Then the second driving member 7 drives the second support 12 to move away from the roller 20 by a small distance, such as 2μm or 3μm, so that even if the roller 20 has a certain runout error, such as 2μm or 3μm, during the rotation process, the cutter 2 can still cut the electrode film without easily scratching the roller 20.

[0082] In addition, when maintenance is required on the cutter 2 or the roller 20, the second drive unit 7 can be activated to drive the second bracket 12 to move away from the roller 20 along the second direction on the first bracket 11, so as to facilitate maintenance on the cutter 2 or the roller 20.

[0083] The aforementioned fixed setting of the detection element 6 relative to the cutter 2 means that when the cutter 2 moves, the detection element 6 moves synchronously with the cutter 2, as long as the detection element 6 can detect whether the cutter 2 and the roller 20 are in contact along the second direction.

[0084] Additionally, the detection element 6 is used to detect whether the cutter 2 and the roller 20 are in contact along the second direction. This can be achieved by detecting the pressure exerted on the cutter 2 when it contacts the roller 20, thus determining contact when a change in pressure occurs; alternatively, the detection element 6 can detect the distance between the cutter 2 and the roller 20, determining contact by checking if the distance between their outer circumferential surfaces is zero; or the detection element 6 can detect the movement distance of the cutter 2 along the second direction, determining contact when the distance the cutter 2 moves towards the roller 20 is within a preset range. Of course, the detection element 6 can also determine contact by detecting other parameters, which is not limited here.

[0085] Optionally, the detection component 6 may include at least one of the following: pressure sensor, displacement sensor, ultrasonic sensor, photoelectric ranging sensor, etc., and is not limited here.

[0086] Therefore, the detection component 6 can have higher detection accuracy and sensitivity, so that the cutting position of the cutter 2 can be adjusted more precisely, and the relative position between the cutter 2 and the roller 20 can be more accurate.

[0087] For example, in some embodiments, when the detection element 6 includes any one of a displacement sensor, an ultrasonic sensor, or a photoelectric ranging sensor, the cutting device 10 may further include a cutter seat 8, a slider 5b, and a guide rail 5a. The cutter 2, cutter seat 8, slider 5b, guide rail 5a, and second bracket 12 are arranged along a second direction. The cutter 2 and the detection element 6 may both be disposed on the cutter seat 8. The cutter seat 8 is disposed on the slider 5b. The slider 5b and the guide rail 5a are slidably connected along a first direction. The guide rail 5a is fixed on the second bracket 12. At this time, the first driving element 3 may also be disposed on the second bracket 12 through the driving element mounting seat 41. The first driving element 3 is connected to the cutter seat 8 and is used to drive the cutter seat 8 to move along the first direction, so as to drive the cutter 2 to reciprocate along the first direction.

[0088] In other embodiments, such as Figure 3As shown, when the detection element 6 includes a pressure sensor, the cutter 2 is arranged along the second direction with the second bracket 12, and the pressure sensor is located between the cutter 2 and the second bracket 12. For example, the cutting device 10 also includes a cutter holder 8, a mounting base 41, a slider 5b, and a guide rail 5a. The cutter 2, cutter holder 8, pressure sensor, mounting base 41, slider 5b, guide rail 5a, and second bracket 12 are arranged along the second direction. The cutter 2 is disposed on the cutter holder 8, and the pressure sensor is disposed on the mounting base 41. The pressure sensor is located along the second direction between the cutter holder 8 and the mounting base 41. The mounting base 41 is disposed on the slider 5b. On block 5b, guide rail 5a is set on second bracket 12. At this time, first drive member 3 can also be set on second bracket 12 through drive member mounting base 41. First drive member 3 is connected to mounting base 41 and is used to drive mounting base 41 to move along the first direction, so as to drive pressure sensor to move back and forth along the first direction. Pressure sensor carries cutter seat 8 to move back and forth along the first direction, thereby driving cutter 2 to move back and forth along the first direction. This makes the detection member 6 have high sensitivity and accuracy in detecting whether cutter 2 is in contact with roller 20, while also making the structure relatively simple and easy to implement.

[0089] The second driving component 7 can also be implemented in various ways. For example, the second driving component 7 may include any one of an electric cylinder, an electric displacement platform, a slide table, etc., so that the second driving component 7 can drive the cutter 2 in the second direction with high precision, so that the cutter 2 can cut the electrode film better and can more effectively prevent the cutter 2 from scratching the roller 20 during the cutting process.

[0090] Optionally, such as Figure 4 As shown, the cutting device 10 also includes a base (not shown) and a third driving member 9. The bracket 1 is slidably connected to the base along the axial direction of the roller 20, and the third driving member 9 is connected to the bracket 1 to drive the bracket 1 to move along the axial direction of the roller 20.

[0091] Therefore, the position of the cutter 2 can be adjusted along the axial direction of the roller 20 so that the cutter 2 can also cut the electrode film along the axial direction of the roller 20, or when cutting the edge of the electrode film, it can also cut the edge of the electrode film of different widths.

[0092] The implementation of the third driving component 9 can be roughly the same as that of the second driving component 7, and is not limited here.

[0093] In addition, when the support 1 includes a first support 11 and a second support 12, the second support 12 is slidably connected to the first support 11 along the second direction, and the cutter 2 is located on the second support 12 and is slidably connected to the second support 12 along the first direction, the first support 11 can be slidably connected to the base along the axial direction of the roller 20, and the third drive can be connected to the first support 11 to drive the first support 11 to move along the axial direction of the roller 20, so as to drive the second support 12 to move along the axial direction of the roller 20, and then drive the cutter 2 to move along the axial direction of the roller 20.

[0094] Optionally, a slider and a guide rail can also be provided between the first support 11 and the base. That is, the guide rail extends along the axial direction of the roller 20, the guide rail is set on the base, and the slider is set on the first support 11, so as to play a certain guiding role in the movement of the first support 11 along the axial direction of the roller 20 and prevent the first support 11 from deviating when it moves along the axial direction of the roller 20.

[0095] This application also discloses a dry coating apparatus, such as... Figure 5 As shown, the device includes a roller 20 and a cutting device 10 according to any of the above embodiments. The roller 20 is used to transport the electrode film 200. The cutter 2 is located on the radial side of the roller 20 and close to the axial end of the roller 20. The cutter 2 is used to cut the edge of the electrode film 200 transported by the roller 20.

[0096] Therefore, the dry coating equipment 100 can cut the electrode film 200 using the cutting device 10 described in any of the above embodiments, and the contact time between the cutting blade 2 extending in the first direction and the same position of the electrode film 200 can be shorter, effectively preventing the cutting blade 2 from blocking material during the cutting process, effectively preventing burrs from appearing on the edge of the electrode film 200 after cutting, improving the cutting effect of the cutting device 10 on the electrode film 200, and facilitating the improvement of the quality of the electrode sheet formed by the electrode film 200 and the current collector.

[0097] Furthermore, the cutting device 10 in the dry coating equipment 100 is the same as the cutting device 10 in the above embodiments. Therefore, the cutting device 10 in the dry coating equipment 100 has roughly the same technical effect as the cutting device 10 in the above embodiments. Since the cutting device 10 has been described in detail in the above embodiments, it will not be repeated here.

[0098] The cutter 2 is located on the radial side of the roller 20 and close to the axial end of the roller 20, that is, the electrode film 200 is wrapped around one side of the roller 20. For example, the electrode film 200 can be wrapped around the lower side of the roller 20, and the cutter 2 can be located below the roller 20 and close to the end of the roller 20, so that the edge of the electrode film 200 can be cut by the cutter 2.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cutting device (10), characterized in that, The cutting device (10) is used to cut the product conveyed by the roller (20), and the cutting device (10) includes: Frame (1); A cutter (2) is slidably connected to the bracket (1) along a first direction, the first direction being tangent to the circumferential direction of the roller (20), and the cutting edge of the cutter (2) extending along the first direction; A first driving member (3) is connected to the cutter (2).

2. The cutting device (10) according to claim 1, characterized in that, The cutting device (10) further includes a crank-slider assembly (4), and the first drive member (3) is connected to the cutter (2) through the crank-slider assembly (4).

3. The cutting device (10) according to claim 2, characterized in that, The first driving component (3) includes a motor, the crank-slider assembly (4) includes a mounting base (41), a connecting rod (42) and a rotating wheel (43), the cutter (2) is disposed on the mounting base (41), the mounting base (41) is slidably disposed on the bracket (1) along the first direction, one end of the connecting rod (42) is rotatably connected to the mounting base (41), the rotating wheel (43) has a connection position off-center from its center, the other end of the connecting rod (42) is rotatably connected to the connection position of the rotating wheel (43), and the output shaft of the motor is connected to the center of the rotating wheel (43).

4. The cutting device (10) according to claim 3, characterized in that, The connecting rod (42) is rotatably connected to the mounting base (41) via a rotating shaft, and the rotating shaft and the center of the rotating wheel (43) are arranged along the first direction.

5. The cutting device (10) according to claim 1, characterized in that, The cutting device (10) further includes a mounting base (41), which is slidably disposed on the bracket (1) along the first direction, and the cutter (2) is disposed on the mounting base (41); The first driving member (3) includes any one of a piezoelectric actuator, an electric cylinder, and a pneumatic cylinder. The output end of any one of the piezoelectric actuator, the electric cylinder, and the pneumatic cylinder is connected to the mounting base (41) for driving the mounting base (41) to reciprocate relative to the bracket (1) along the first direction.

6. The cutting device (10) according to claim 1, characterized in that, The cutting device (10) further includes a guide rail (5a) and a slider (5b). The guide rail (5a) extends along the first direction and is disposed on the bracket (1). The slider (5b) is connected to the cutter (2) and is slidably connected to the guide rail (5a).

7. The cutting device (10) according to any one of claims 1-6, characterized in that, The bracket (1) includes a first bracket (11) and a second bracket (12). The second bracket (12) is slidably connected to the first bracket (11) along a second direction. The second direction is perpendicular to the first direction and the axial direction of the roller (20). The cutter (2) is located on the second bracket (12) and is slidably connected to the second bracket (12) along the first direction. The cutting device (10) further includes: The detection element (6) is fixedly disposed relative to the cutter (2) and is used to detect whether the cutter (2) and the roller (20) are in contact along the second direction; The second driving member (7) is connected to the second bracket (12) and is used to drive the second bracket (12) to move relative to the first bracket (11) along the second direction.

8. The cutting device (10) according to claim 7, characterized in that, The detection component (6) includes at least one of a pressure sensor, a displacement sensor, and an ultrasonic sensor.

9. The cutting device (10) according to claim 8, characterized in that, The cutter (2) is arranged along the second direction with the second bracket (12), and when the detection element (6) includes a pressure sensor, the pressure sensor is located between the cutter (2) and the second bracket (12).

10. The cutting device (10) according to claim 7, characterized in that, The second drive unit (7) includes any one of an electric cylinder, an electric displacement platform, and a slide.

11. The cutting device (10) according to any one of claims 1-6, characterized in that, The cutting device (10) further includes a base and a third driving member (9). The bracket (1) is slidably connected to the base along the axial direction of the roller (20). The third driving member (9) is connected to the bracket (1) and is used to drive the bracket (1) to move along the axial direction of the roller (20).

12. A dry coating apparatus (100), characterized in that, include: Roller (20) for conveying electrode film (200); The cutting device (10) according to any one of claims 1-11, wherein the cutter (2) is located on the radial side of the roller (20) and close to the axial end of the roller (20), and the cutter (2) is used to cut the edge of the electrode film (200) conveyed by the roller (20).

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