Edge trimming device, edge trimming control method and dry coating machine

Abstract

The present invention discloses a trimming device, a trimming control method, and a dry coating machine. The trimming device includes a frame, a roller cutter, and a drive mechanism. The frame is provided with a rotatable roller member, the roller cutter abuts against the roller member, and the drive mechanism is provided on the frame and connected to the roller cutter so as to drive the roller cutter to move along the outer circumference of the roller member in a preset arc trajectory. A pressure sensor is provided between the roller cutter and the drive mechanism. The pressure sensor is electrically connected to the drive mechanism and can detect the force between the roller cutter and the drive mechanism. The force between the roller cutter and the drive mechanism is detected by the pressure sensor to monitor the force information fed back by the roller cutter contacting the film material, so as to determine the cutting condition of the edge of the film material and correspondingly increase the cutting of the edge of the film material with higher surface density, thereby achieving the cutting of the edge of the film material with higher surface density, which is beneficial to ensure the parallelism and distance between the edges of the two sides of the film material and is convenient for production application.

Description

Technical Field

[0001] The present invention relates to the technical field of electrode sheet production, and in particular to a trimming device, a trimming control method and a dry coating machine. Background Art

[0002] In the existing dry coating production process of electrode sheets, the mixed material after fibrillation treatment needs to be dropped through a drop bin into the roller group of a rolling device for rolling to form an electrode film with self-supporting properties. After the electrode film is compounded with the current collector, it needs to be rolled by another rolling device to form an electrode sheet. In order to ensure the parallelism and distance of the edges on both sides of the electrode film or electrode sheet along the width direction, the edges of the film material are usually trimmed in the existing technology. The existing trimming method is relatively simple. The roller knife usually abuts against the roller with a relatively appropriate preset pressure to cut the passing film material. However, since the surface density of the coating layer formed by the dry coating process is difficult to control, the surface density of some parts of the film material is relatively large, so it is difficult to be cut by the roller knife under the preset pressure. There is a problem that some edges of the film material cannot be cut, which affects the subsequent production and processing. Summary of the Invention

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a trimming device that uses a pressure sensor to monitor the force feedback from the contact between a roller blade and the film material to determine the film material's cutting condition. A drive mechanism then drives the roller blade to move along the outer circumference of the roller in a preset arc trajectory, thereby trimming the edge of the film material with a higher area density, facilitating production applications.

[0004] The present invention also provides a trimming control method applied to the trimming device.

[0005] The invention also provides a dry coating machine with the trimming device.

[0006] According to the first aspect of the present invention, the trimming device includes a frame, a roller cutter and a driving mechanism. The frame is provided with a rotatable roller member, the roller cutter abuts against the roller member, and the driving mechanism is provided on the frame and connected to the roller cutter so as to drive the roller cutter to move along the outer circumference of the roller member in a preset arc trajectory. A pressure sensor is provided between the roller cutter and the driving mechanism. The pressure sensor is electrically connected to the driving mechanism and can detect the force between the roller cutter and the driving mechanism.

[0007] The trimming device according to the embodiment of the present invention has at least the following beneficial effects: when in use, the roller cutter abuts against the roller member with a preset pressure to cut the edge of the film material passing through the roller member, and the force between the roller cutter and the drive mechanism is detected by a pressure sensor between the roller cutter and the drive mechanism to monitor in real time the force information fed back by the roller cutter contacting the film material. When the roller cutter contacts a film material with a large surface density and has not cut it, the roller cutter is subjected to a large force fed back by the film material and tends to move away from the film material. As a result, the pressure sensor detects that the force fed back by the roller cutter has increased, and at this time the drive mechanism is controlled to drive the roller cutter to move along the outer circumference of the roller member according to a preset arc trajectory to increase the edge cutting of the film material at that location, thereby achieving the cutting of the edge of the part of the film material with a larger surface density, which is beneficial to avoid affecting the parallelism and distance of the edges on both sides due to the fact that some edges of the film material have not been cut, and is convenient for production applications.

[0008] According to some embodiments of the present invention, the driving mechanism includes a first driver and a second driver, wherein: the first driver is connected to the roller cutter and can drive the roller cutter to move in a direction close to or away from the roller member, and the second driver is connected to the first driver and can drive the first driver to move in a direction at an angle to the driving direction of the first driver. In other embodiments, the first driver can also be connected to the second driver and can drive the second driver to move in a direction close to or away from the roller member, and the second driver is connected to the roller cutter and can drive the roller cutter to move in a direction at an angle to the driving direction of the first driver.

[0009] According to some embodiments of the present invention, the trimming device also includes an offset detection component and a third driver, wherein the offset detection component is located on the input side of the film material on the roller, the offset detection component is electrically connected to the third driver and can detect the offset amount of the film material on the roller along the axial direction of the roller, and the third driver can drive the roller cutter to move along the axial direction of the roller.

[0010] According to some embodiments of the present invention, the roller cutter is located on the film material output side of the roller member, and a first pulling roller is provided below the roller cutter. The first pulling roller is connected to a fourth driver for driving the first pulling roller to move. The first pulling roller can move to abut the film material on the output side of the roller member and push the film material to move, so that the contact position between the film material and the roller cutter can follow the movement trajectory of the roller cutter and be close to the surface of the roller member.

[0011] According to some embodiments of the present invention, the roller element is provided with a second pulling roller on the input side of the film material, and the second pulling roller is connected to a fifth drive for driving the second pulling roller to move. The second pulling roller can move to abut the film material on the input side of the roller element and push the film material to move, so as to increase the conveying path of the film material from the second pulling roller to the roller element.

[0012] According to some embodiments of the present invention, the roller cutter is driven and connected to a sixth driver for driving the roller cutter to rotate, or the driving mechanism can drive the roller cutter to reciprocate along the outer circumference of the roller member in a preset arc trajectory.

[0013] According to some embodiments of the present invention, the roller member includes a roller shaft and a plurality of sleeves sleeved on the roller shaft, and the sleeves are detachable and replaceable.

[0014] According to some embodiments of the present invention, at least two roller cutters are provided and respectively distributed and abutted against both ends of the roller, so as to ensure the parallelism and distance between the edges of both sides of the film material.

[0015] According to some embodiments of the present invention, a waste trough is provided below the roller cutter, and the waste trough is used to contain waste formed by cutting the film material.

[0016] The trimming control method according to the second aspect of the present invention is applied to the trimming device according to the first aspect of the present invention. The trimming control method includes: detecting the force between the roller cutter and the drive mechanism through the pressure sensor to monitor the force information fed back by the roller cutter contacting the film material. When the detection result is greater than a preset value, it is judged that the roller cutter has not cut the film material, and the drive mechanism drives the roller cutter to move along the outer circumference of the roller member according to a preset arc trajectory at a speed consistent with the film material conveying speed.

[0017] The edge cutting control method according to the embodiment of the present invention has at least the following beneficial effects: the force information fed back by the roller cutter contacting the film material is monitored by a pressure sensor to determine the cutting condition of the edge of the film material, and the roller cutter is driven by a driving mechanism to move along the periphery of the roller according to a preset arc trajectory at a speed consistent with the film material conveying speed to increase the edge cutting of the film material at that location, thereby realizing the cutting of the edge of the film material with a larger surface density, which is beneficial to avoid affecting the parallelism and distance of the edges on both sides due to the uncut edges of some film materials, and is convenient for production application.

[0018] The dry coating machine according to the embodiment of the third aspect of the present invention comprises the trimming device according to the embodiment of the first aspect of the present invention.

[0019] The dry coating machine according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned trimming device, it monitors the force information fed back by the roller knife contacting the film material through the pressure sensor to judge the cutting condition of the edge of the film material, and correspondingly increases the edge cutting of the film material at the area with higher surface density, thereby achieving the cutting of the edge of the film material with higher surface density, which is beneficial to ensure the flatness of the side edge of the film material.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a partial structural diagram of a dry coating machine according to an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a portion of the structure of a trimming device according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A simplified schematic diagram of a first embodiment of the mid-cutting device;

[0025] Figure 4 for Figure 2 A simplified schematic diagram of a second embodiment of the trimming device;

[0026] Figure 5 for Figure 2 A simplified schematic diagram of a third embodiment of the mid-cutting device;

[0027] Figure 6 for Figure 2 A simplified schematic diagram of a fourth embodiment of a mid-edge trimming device.

[0028] Reference numerals:

[0029] Frame 100, roller 110, roller shaft 111, sleeve 112, first pulling roller 120, second pulling roller 130, waste trough 140, drive motor 150, first slide rail 160, auxiliary roller 170, first drive roller group 180, second drive roller group 190; roller cutter 200; drive mechanism 300, first driver 310, second slide rail 320; unwinding device 400; rolling device 500; thickness gauge 600; winding device 700; film material 1. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, if the words such as several, greater than, less than, exceed, above, below, within, etc. appear, among which, several means one or more, and more means more than two, greater than, less than, exceed, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself.

[0033] If the first and second are described, they are only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figure 1 and Figure 2 A trimming device includes a frame 100, a roller cutter 200 and a driving mechanism 300. The frame 100 is provided with a rotatable roller member 110, the roller cutter 200 abuts against the roller member 110, and the driving mechanism 300 is provided on the frame 100 and connected to the roller cutter 200, so as to drive the roller cutter 200 to move along the outer circumference of the roller member 110 in a preset arc trajectory. A pressure sensor (not shown in the figure) is provided between the roller cutter 200 and the driving mechanism 300. The pressure sensor is electrically connected to the driving mechanism 300 and can detect the force between the roller cutter 200 and the driving mechanism 300.

[0036] It is understandable that if Figure 2 and Figure 3As shown, the left side of the roller 110 is the input side of the film material 1, and the right side of the roller 110 is the output side of the film material 1. The roller 110 is connected to a drive motor 150 for driving it to rotate. An auxiliary roller 170 is also rotatably provided on the frame 100 for auxiliary use such as reversing and tensioning the film material 1.

[0037] When in use, the roller cutter 200 abuts against the roller member 110 with a preset pressure to cut the edge of the film material 1 passing through the roller member 110. The force between the roller cutter 200 and the drive mechanism 300 is detected by the pressure sensor between the roller cutter 200 and the drive mechanism 300 to monitor in real time the force information fed back by the roller cutter 200 contacting the film material 1. When the roller cutter 200 contacts the film material 1 with a large surface density and does not cut it, the roller cutter 200 is subjected to a large force fed back by the film material 1 and will tend to move away from the film material 1. Therefore, the pressure sensor detects that the force fed back by the roller cutter 200 increases. At this time, the drive mechanism 300 is controlled to drive the roller cutter 200 to move along the outer circumference of the roller member 110 according to a preset arc trajectory to increase the edge cutting of the film material 1 at that location, thereby achieving the cutting of the edge of the part of the film material 1 with a larger surface density, which is beneficial to avoid affecting the parallelism and distance of the edges on both sides due to the uncut edges of some of the film material 1, thereby improving the reliability of edge cutting and facilitating production applications.

[0038] In some embodiments, the drive mechanism 300 includes a first driver 310 and a second driver, wherein: the first driver 310 is connected to the roller cutter 200 and is capable of driving the roller cutter 200 to move in a direction close to or away from the roller member 110, the second driver is connected to the first driver 310 and is capable of driving the first driver 310 to move in a direction that is angled with the driving direction of the first driver 310, or the first driver 310 is connected to the second driver and is capable of driving the second driver to move in a direction close to or away from the roller member 110, and the second driver is connected to the roller cutter 200 and is capable of driving the roller cutter 200 to move in a direction that is angled with the driving direction of the first driver 310.

[0039] It is understandable that if Figure 2 and Figure 3 As shown, the driving mechanism 300 includes a first driver 310 and a second driver (not shown in the figure). The frame 100 is provided with a first slide rail 160 and a moving seat (not shown in the figure) that slides with the first slide rail 160. The first driver 310 is arranged on the moving seat. The power output end of the first driver 310 is connected to the roller cutter 200. The second driver is connected to the moving seat to drive the first driver 310 to move through the moving seat. Figure 3 and Figure 4In the embodiment shown, the first driver 310 drives the roller cutter 200 to move in the left and right horizontal directions to approach or move away from the roller member 110, and correspondingly, the second driver drives the first driver 310 to move in the up and down vertical directions. Figure 5 and Figure 6 In the illustrated embodiment, the first driver 310 drives the cutter roller 200 to move vertically up and down to approach or move away from the roller 110. Correspondingly, the second driver drives the first driver 310 to move horizontally left and right. Through both horizontal and vertical drive, the cutter roller 200 is caused to follow a predetermined arc trajectory along the periphery of the roller 110. The first driver 310 drives the cutter roller 200 to move toward or away from the roller 110, thereby facilitating adjustment and control of the predetermined pressure of the cutter roller 200 against the roller 110, thereby facilitating the cutting of the film material 1.

[0040] Of course, the first driver 310 can also be connected to the second driver and can drive the second driver to move in a direction close to or away from the roller 110. The second driver is then connected to the roller cutter 200 and can drive the roller cutter 200 to move in a direction that is at an angle to the driving direction of the first driver 310. By driving in two directions, the roller cutter 200 can fit the preset arc trajectory along the periphery of the roller 110.

[0041] In actual application, the first driver 310 and the second driver can both be linear motors, hydraulic cylinders, pneumatic cylinders or electric push rods. In addition to the above structure, the drive mechanism 300 can also be connected to the roller cutter 200 through a swinging driver to enable the roller cutter 200 to swing along a preset arc trajectory. The specific settings can be made according to actual usage needs.

[0042] In some embodiments, the trimming device also includes an offset detection component and a third driver (neither of which is shown in the figure). The offset detection component is located on the input side of the film material 1 on the roller 110. The offset detection component is electrically connected to the third driver and can detect the offset of the film material 1 on the roller 110 along the axial direction of the roller 110. The third driver can drive the roller cutter 200 to move along the axial direction of the roller 110.

[0043] It is understandable that if Figure 2 As shown, a second slide rail 320 is provided on the movable seat, and the two first drivers 310 are slidably connected to the movable seat through the second slide rail 320. The third driver (not shown in the figure) is connected to at least one of the first drivers 310 to drive the first driver 310 to move along the second slide rail 320. When the offset detection component detects that the film material 1 on the roller 110 is offset, the third driver can be controlled based on the feedback of the offset amount of the film material 1 to drive the first driver 310 to move a corresponding distance according to the offset amount, so that the roller cutter 200 can act on the specified position of the film material 1, thereby improving adaptability.

[0044] In actual application, the offset detection component can detect the offset of the film material 1 on the roller 110 along the axial direction of the roller 110 through a photoelectric sensor, an infrared sensor, etc. The third drive can be a linear motor, a hydraulic cylinder, an air cylinder or an electric push rod, etc., which can be set accordingly according to actual usage needs.

[0045] In some embodiments, the roller cutter 200 is located on the film material 1 output side of the roller member 110, and a first pulling roller 120 is provided below the roller cutter 200. The first pulling roller 120 is connected to a fourth drive for driving the first pulling roller 120 to move. The first pulling roller 120 can move to abut against the film material 1 on the output side of the roller member 110 and push the film material 1 to move, so that the contact position between the film material 1 and the roller cutter 200 can follow the movement trajectory of the roller cutter 200 and be close to the surface of the roller member 110.

[0046] It is understandable that if Figure 3 and Figure 4 As shown, the roller cutter 200 is located on the film material 1 output side (right side) of the roller member 110. In order to avoid the risk of the film material 1 being damaged by the roller cutter 200 when the roller cutter 200 moves along the preset arc trajectory of the roller member 110 because the opposite side of the film material 1 that contacts the roller cutter 200 is not supported by the roller member 110, refer to Figure 4 By setting a first pulling roller 120 and a fourth driver (not shown in the figure) for driving the first pulling roller 120 to move, the first pulling roller 120 can be driven to move in the left and right directions, so as to move to abut the film material 1 on the output side of the roller 110 and push the film material 1 to move, so that the contact position between the film material 1 and the roller cutter 200 can follow the movement trajectory of the roller cutter 200 and be close to the surface of the roller 110, thereby helping to avoid the risk of the film material 1 being broken and damaged by the roller cutter 200 and improving the reliability of use.

[0047] Of course, in addition to the above structure, refer to Figure 5 and Figure 6 The position of the roller cutter 200 can also be adjusted, placing it between the input and output sides of the film material 1 (on the upper side of the roller 110 in the figure) to effectively increase support for the film material 1 on the side opposite to the contact with the roller cutter 200, thereby reducing the risk of the film material 1 being damaged by the roller cutter 200. In actual application, the fourth actuator can be a linear motor, hydraulic cylinder, pneumatic cylinder, or electric push rod, and its driving condition for the first drawing roller 120 can be set accordingly according to actual use needs.

[0048] In some embodiments, the roller member 110 is provided with a second pulling roller 130 on the input side of the film material 1, and the second pulling roller 130 is connected to a fifth drive for driving the second pulling roller 130 to move. The second pulling roller 130 can move to abut against the film material 1 on the input side of the roller member 110 and push the film material 1 to move, so as to increase the conveying path of the film material 1 from the second pulling roller 130 to the roller member 110.

[0049] It is understandable that if Figure 5 and Figure 6 As shown, the second drawing roller 130 is located on the left side of the roller member 110, and the fifth driver (not shown in the figure) is used to drive the second drawing roller 130 to move left and right. During use, when the roller cutter 200 moves to the maximum distance along the preset arc trajectory and still fails to cut the edge of the film material 1, the partial conveying of the film material 1 on the cutting station can be paused. At this time, the second drawing roller 130 can be driven by the fifth driver to move to abut against the film material 1 on the input side of the roller member 110 and push the film material 1 to move, so that the conveying path of the film material 1 from the second drawing roller 130 to the roller member 110 is increased. Therefore, when the film material 1 on the cutting station is partially paused, the continued input of the film material 1 on the left side is not affected, avoiding the trouble of stopping the processing of the previous station and improving production efficiency.

[0050] Specifically, a first drive roller group 180 may be provided on the left side of the roller member 110, and a second drive roller group 190 may be provided on the right side thereof. The film material 1 on the input side is conveyed through the first drive roller group 180, and the film material 1 on the output side is conveyed through the second drive roller group 190. When the roller cutter 200 moves in a preset arc trajectory, the speed of the second drive roller group 190 is slowed down, while the speed of the first drive roller group 180 remains unchanged. The conveying path of the film material 1 from the second pulling roller 130 to the roller member 110 is increased by moving the second pulling roller 130 to slow down the conveying speed of the film material 1 on the cutting station, thereby increasing the contact time between the film material 1 and the roller cutter 200 on the cutting station, reducing the risk that the edge of the film material 1 with a larger surface density cannot be cut off by the roller cutter 200 moving along the preset arc trajectory, improving the reliability of use, and at the same time, does not affect the output of the film material 1 at the previous station.

[0051] Of course, in addition to setting up the drive roller group, refer to Figure 1 When actually used in a dry coating machine for production, the drive roller group can be omitted. By adjusting the winding speed of the winding device 700, the conveying speed of the film material 1 at the cutting station can be adjusted. The film material 1 can be conveyed by the roller conveying action of the pressing roller group in the rolling device 500 or the unwinding action of the unwinding device 400. The specific setting can be made according to the actual use needs. In actual application, the moving direction of the second pulling roller 130 does not necessarily need to be as Figure 6 As shown, it can also move in the up and down directions, as long as it can increase the conveying path of the film material 1 from the second pulling roller 130 to the roller member 110.

[0052] In some embodiments, the roller cutter 200 is driven by a sixth driver (not shown) for driving the roller cutter 200 to rotate, or the driving mechanism 300 can drive the roller cutter 200 to reciprocate along the periphery of the roller member 110 in a preset arc trajectory.

[0053] It is understandable that when the conveyance of the film material 1 on the cutting station is paused or slowed down, the roller cutter 200 can be driven to rotate by the sixth driver, or the roller cutter 200 can be driven by the driving mechanism 300 to reciprocate along the outer periphery of the roller member 110 in a preset arc trajectory to increase the cutting ability of the edge of the film material 1 on the cutting station, facilitate cutting off the edge of the film material 1, and improve reliability of use.

[0054] In some embodiments, the roller 110 includes a roller shaft 111 and a plurality of sleeves 112 sleeved on the roller shaft 111, and the sleeves 112 are detachable and replaceable. Figure 2 As shown, roller shaft 111 is provided with a plurality of sleeves 112. During use, the width or number of sleeves 112 can be adjusted accordingly based on the width of the film material 1 to be conveyed, thereby adjusting the contact surface of roller member 110 for contacting the film material 1, improving applicability and facilitating use. In actual application, the number and specific structure of sleeves 112 can be set accordingly based on actual use needs.

[0055] In some embodiments, at least two roller cutters 200 are provided and are respectively distributed and abutted against both ends of the roller member 110. It is understood that, as Figure 2 As shown, two roller cutters 200 are provided and are respectively abutted against the ends of the roller member 110. The drive mechanism 300 is connected to the two roller cutters 200 to drive the two roller cutters 200 to move synchronously to cut the edges of the film material, which is convenient for use. In actual application, three, four, or more roller cutters 200 can also be provided, which are respectively distributed at the ends of the roller member 110.

[0056] In some embodiments, a waste trough 140 is provided below the roller cutter 200, and the waste trough 140 is used to receive the waste formed by cutting the film material 1. Figure 2 As shown, waste chute 140 is located below roller 110 and roller cutter 200. When the edge of film 1 on roller 110 is cut by roller cutter 200, the resulting waste falls into waste chute 140 under the action of gravity and is collected by waste chute 140 for easy collection and subsequent processing. In actual application, the specific location and structure of waste chute 140 can be determined according to actual needs.

[0057] The trimming control method according to the second aspect of the present invention is applied to the trimming device according to the first aspect of the present invention. The trimming control method includes: detecting the force between the roller cutter 200 and the drive mechanism 300 through a pressure sensor to monitor the force information fed back by the roller cutter 200 contacting the film material 1. When the detection result is greater than a preset value, it is judged that the roller cutter 200 has not cut the film material 1, and the drive mechanism 300 drives the roller cutter 200 to move along the outer circumference of the roller member 110 according to a preset arc trajectory at a speed consistent with the conveying speed of the film material 1.

[0058] According to the edge cutting control method of an embodiment of the present invention, the force information fed back by the roller cutter 200 contacting the film material 1 is monitored by a pressure sensor to determine the cutting condition of the edge of the film material 1, and the roller cutter 200 is driven by the driving mechanism 300 to move along the periphery of the roller member 110 according to a preset arc trajectory at a speed consistent with the conveying speed of the film material 1 to increase the edge cutting of the film material 1 at that location, thereby achieving the cutting of the edge of the part of the film material 1 with a larger surface density, which is beneficial to avoid affecting the parallelism and distance of the edges on both sides due to the fact that the edges of some of the film material 1 are not cut, and is convenient for production application.

[0059] The dry coating machine according to the third embodiment of the present invention comprises the trimming device according to the first embodiment of the present invention.

[0060] Specifically, if Figure 1 As shown, the dry coating machine also includes a unwinding device 400, a mixing supply device (not shown in the figure), a rolling device 500, a thickness gauge 600 and a winding device 700. When in use, the mixing supply device is used to supply the electrode membrane mixture to the material input end of the rolling device 500, the unwinding device 400 is used to supply the current collector for unloading, and the electrode membrane mixture enters the rolling device 500 for rolling after being compounded with the current collector. The trimming device is used to cut the edge of the membrane material 1 after rolling, the thickness gauge 600 is used to detect the actual thickness of the membrane material 1, and the winding device 700 is used to wind the membrane material 1. According to the dry coating machine of an embodiment of the present invention, by adopting the above-mentioned trimming device, it monitors the force information fed back by the roller knife 200 contacting the membrane material 1 through a pressure sensor to determine the cutting condition of the edge of the membrane material 1, and correspondingly increases the edge cutting of the membrane material 1 at the area with higher surface density, thereby achieving the cutting of the edge of the membrane material 1 at the area with higher surface density, which is beneficial to ensure the parallelism and distance of the edges on both sides of the membrane material 1, and is convenient for production application.

[0061] In actual application, the trimming device can also be used to cut the edge of the electrode film with self-supporting properties formed after the pressing roller. Since the other components of the dry coating machine of the embodiment of the present invention are known to ordinary technicians in this field, they will not be described in detail here.

[0062] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A trimming device, characterized in that: include: a frame, wherein a rotatable roller is provided on the frame; A roller cutter and a driving mechanism, wherein the roller cutter abuts against the roller member, and the driving mechanism is arranged on the frame and connected to the roller cutter so as to drive the roller cutter to move along the periphery of the roller member in a preset arc trajectory. A pressure sensor is provided between the roller cutter and the driving mechanism, and the pressure sensor is electrically connected to the driving mechanism and can detect the force between the roller cutter and the driving mechanism. The force between the roller cutter and the driving mechanism is detected by the pressure sensor to monitor the force information fed back by the roller cutter contacting the film material. When the detection result is greater than a preset value, it is determined that the roller cutter has not cut the film material, and the driving mechanism drives the roller cutter to move along the periphery of the roller member in a preset arc trajectory at a speed consistent with the film material conveying speed.

2. The trimming device according to claim 1, characterized in that: The driving mechanism includes a first driver and a second driver, wherein: the first driver is connected to the roller cutter and can drive the roller cutter to move in a direction close to or away from the roller member, and the second driver is connected to the first driver and can drive the first driver to move in a direction that is angled with the driving direction of the first driver, or The first driver is connected to the second driver and can drive the second driver to move in a direction close to or away from the roller member. The second driver is connected to the roller cutter and can drive the roller cutter to move in a direction forming an angle with the driving direction of the first driver.

3. The trimming device according to claim 1, characterized in that: It also includes an offset detection component and a third driver. The offset detection component is located on the input side of the film material on the roller. The offset detection component is electrically connected to the third driver and can detect the offset of the film material on the roller along the axial direction of the roller. The third driver can drive the roller cutter to move along the axial direction of the roller.

4. The trimming device according to claim 1, characterized in that: The roller cutter is located on the film material output side of the roller component, and a first pulling roller is provided below the roller cutter. The first pulling roller is connected to a fourth driver for driving the first pulling roller to move. The first pulling roller can move to abut the film material on the output side of the roller component and push the film material to move, so that the contact position of the film material and the roller cutter can follow the movement trajectory of the roller cutter and be close to the surface of the roller component.

5. The trimming device according to claim 1, characterized in that: The roller element is provided with a second pulling roller on the input side of the film material, and the second pulling roller is connected to a fifth driver for driving the second pulling roller to move. The second pulling roller can move to abut the film material on the input side of the roller element and push the film material to move, so that the conveying path of the film material from the second pulling roller to the roller element is increased.

6. The trimming device according to claim 5, characterized in that: The roller cutter is driven and connected to a sixth driver for driving the roller cutter to rotate, or the driving mechanism can drive the roller cutter to reciprocate along the outer circumference of the roller member in a preset arc trajectory.

7. The trimming device according to claim 1, characterized in that: The roller element comprises a roller shaft and a plurality of sleeves sleeved on the roller shaft, and the sleeves are detachable and replaceable.

8. The trimming device according to claim 1, characterized in that: At least two roller cutters are provided and are respectively distributed and abutted against the two ends of the roller member.

9. A dry coating machine, characterized in that: The device comprises a trimming device according to any one of claims 1 to 8.

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