Coating device

Abstract

The utility model discloses a coating device which comprises a rack, a coating module, a first driving mechanism and a second driving mechanism, the rack comprises a base and a coating roller, the base is movably arranged on the rack, the first driving mechanism drives the coating module to move along a first direction and a second direction opposite to the first direction, and the second driving mechanism drives the coating module to move along the second direction. The second driving mechanism is used for providing thrust towards the first direction or the second direction for the base. Movement of the coating module in the first direction or the second direction is achieved through driving of the first driving mechanism, and the second driving mechanism is connected with the base and used for applying thrust towards the first direction or the second direction to the coating module so as to provide assistance in the starting stage of the coating module and provide resistance in the braking stage of the coating module. And the second driving mechanism assists the first driving mechanism in driving the coating module, so that the coating module is quickly started and braked, and the response efficiency of the coating module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating equipment, in particular to a coating device. Background Art

[0002] The coating process of the foil material is an important process in the preparation of lithium-ion batteries. In the related technology, the coating roller performs intermittent coating in a way of reciprocatingly moving relative to the driving roller around which the foil material is wound, so as to form a coating area similar to "zebra stripes" on the surface of the foil material. When the distance between adjacent coating areas is small, the reciprocating movement frequency of the coating roller is high, and the entire coating module formed by the related driving, coating and other components that cooperate with the coating roller moves reciprocatingly. The weight and inertia of the coating module are large, and there is a delay in starting and braking, which cannot meet the requirement of the rapid response of the coating roller and affects the coating accuracy. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a coating device, which can make the coating roller respond quickly and improve the coating accuracy.

[0004] According to the coating device in the embodiment of the utility model, it includes:

[0005] A frame;

[0006] A coating module, including a base and a coating roller rotatably connected to the base, and the base is movably installed on the frame;

[0007] A first driving mechanism, connected to the base and used for driving the coating module to move along a first direction and the opposite second direction;

[0008] A second driving mechanism, connected to the base and used for providing a thrust force towards the first direction to the base when the coating module is about to move along the first direction and the second direction and is about to stop, and providing a thrust force towards the second direction to the base when the coating module is moving along the first direction and is about to stop and is about to move along the second direction.

[0009] According to the coating device in the embodiment of the utility model, it has at least the following beneficial effects:

[0010] In the utility model, the movement of the coating module along the first direction or the second direction is realized by the drive of the first driving mechanism. The second driving mechanism is connected to the base and used for applying a thrust force towards the first direction or the second direction to the coating module, so as to provide assistance in the starting stage of the coating module and provide resistance in the braking stage of the coating module. The second driving mechanism assists the first driving mechanism in driving the coating module, realizes the rapid start and stop of the coating module, and improves the response efficiency of the coating module.

[0011] According to some embodiments of the present utility model, the second driving mechanism includes a second power element, an output end of the second power element is connected to the base, the output end of the second power element can move along the first direction or the second direction, and apply a thrust force to the base.

[0012] According to some embodiments of the present utility model, the coating device includes a transmission mechanism, the transmission mechanism includes a first transmission member and a second transmission member, the first transmission member includes a first transmission portion, the second transmission member includes a second transmission portion, the first transmission portion is provided on both sides of the second transmission portion in the first direction and the second direction, and can abut against the first transmission portion, one of the first transmission member and the second transmission member is connected to the base, and the other is connected to the second driving mechanism.

[0013] According to some embodiments of the present utility model, the first transmission member and the second transmission member are in transmission connection, the base is connected to the second transmission member, the second driving mechanism is connected to the first transmission member, and is used to drive the first transmission member to rotate, so that the first transmission member applies a thrust force to the second transmission member and drives the second transmission member to move along the first direction and the second direction.

[0014] According to some embodiments of the present utility model, the first transmission member is provided as a helical gear and is connected to the second driving mechanism, the second driving mechanism is used to drive the helical gear to rotate, the second transmission member is provided as a rack meshing with the helical gear, and the second transmission member is connected to the base.

[0015] According to some embodiments of the present utility model, the second driving mechanism is located below the base.

[0016] According to some embodiments of the present utility model, the first driving mechanism is provided on one side of the base in the second direction.

[0017] According to some embodiments of the present utility model, the coating module further includes a first driving member for driving the coating roller to rotate, the first driving member is installed on the base and is located above the second driving mechanism;

[0018] And / or, the coating module further includes a second driving member for driving the coating roller to move axially, the second driving member is installed on the base and is located above the second driving mechanism;

[0019] And / or, the coating module further includes a squeegee, the squeegee is installed on the base and is located on one side of the coating roller in the first direction, and the squeegee is used to scrape off the excess slurry on the surface of the coating roller;

[0020] And / or, the coating device further includes a driving roller and a third driving member for driving the driving roller to rotate. The driving roller is located on one side of the coating roller along the second direction. The third driving member is installed on the machine frame, and the first driving mechanism is arranged below the third driving member.

[0021] According to some embodiments of the present invention, the coating device includes two first driving mechanisms that act synchronously and are respectively arranged on opposite sides of the machine frame along the axis of the coating roller, and further includes two second driving mechanisms that act synchronously and are respectively arranged on opposite sides of the machine frame along the axis of the coating roller. The coating module includes two bases arranged at intervals along the axis of the coating roller, and each base is connected to one first driving mechanism and one second driving mechanism.

[0022] According to some embodiments of the present invention, a guiding structure extending along the first direction is provided between the base and the machine frame.

[0023] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0024] The following further describes the present invention in conjunction with the drawings and embodiments, where:

[0025] Figure 1 is a schematic structural diagram of an embodiment of the coating device of the present invention;

[0026] Figure 2 is Figure 1 a partial schematic diagram of the coating device in

[0027] Figure 3 is a schematic diagram of the cooperation of the first driving mechanism, the second driving mechanism and the transmission mechanism;

[0028] Figure 4 is a schematic diagram of an embodiment of the transmission mechanism;

[0029] Figure 5 is a schematic diagram of the cooperation of the coating roller with the first driving mechanism and the second driving mechanism.

[0030] Reference Signs:

[0031] Frame 100; coating module 200, base 210, coating roller 220, first driving member 230, second driving member 240, moving seat 250, scraper 260; first driving mechanism 300, first power element 310, screw rod 320, nut 330; second driving mechanism 400, second power element 410; driving roller 500, third driving member 501; transmission mechanism 600, first transmission member 610, first transmission part 611, second transmission member 620, second transmission part 621; guiding structure 700. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where 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 by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0034] In the description of the present invention, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, and understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0036] In the description of the present utility model, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] In the related art, a drive roller is provided with a foil wound around it. During the rotation of the drive roller, the foil is continuously conveyed. When the surface of the coating roller comes into contact with the foil, the slurry on the surface of the coating roller is coated on the surface of the foil. By driving the coating roller to reciprocate relative to the drive roller, the coating roller intermittently coats the foil, and a coating area with a zebra stripe pattern is formed on the surface of the foil. The coating module in the coating device is loaded with various components that cooperate with the coating roller for coating, such as a power element for driving the coating roller to rotate, a scraper for scraping off the excess slurry on the surface of the coating roller, etc. To ensure the stable cooperation between the coating roller and other components and maintain the production rhythm, the coating module needs to move reciprocally relative to the drive roller as a whole. When the coating roller needs to reciprocate at a high frequency, due to the large weight and inertia of the coating module as a whole, and for a wide and long coating module (such as ≥1.8 m, the conventional coating module is 1.1 - 1.2 m), the overall weight of the coating module is greatly increased. The coating module lags behind both at the start of movement and when braking, resulting in a delay in the response of the coating roller. The coating roller cannot brake at the preset position or move quickly from the preset position, affecting the position matching accuracy between the coating roller and the drive roller and the interval accuracy between adjacent coating areas.

[0038] Based on the above, in the embodiments of the present utility model, a coating device is provided, referring to Figure 1 And Figure 2, The coating device includes a frame 100, a coating module 200, a first driving mechanism 300 and a second driving mechanism 400. The coating module 200 includes a base 210 and a coating roller 220. The coating roller 220 is used to coat the slurry on the surface of the foil. The coating roller 220 is rotatably connected to the base 210, and the base 210 is movably installed on the frame 100. It can be understood that the coating device further includes a driving roller 500 for winding the foil. When the base 210 moves relative to the frame 100, the entire coating module 200 approaches or moves away from the driving roller 500. When the coating module 200 approaches the driving roller 500 and the coating roller 220 presses on the foil on the surface of the driving roller 500, as the coating roller 220 rotates, the coating roller 220 continuously coats the slurry on the surface of the foil. When the coating module 200 moves away from the driving roller 500, the coating roller 220 separates from the foil and the coating action pauses. The foil continues to be conveyed forward following the rotation of the driving roller 500. When the coating module 200 approaches the driving roller 500 again and the coating roller 220 presses on the foil, the coating roller 220 coats the slurry on the surface of the foil again, thereby achieving intermittent coating of the foil.

[0039] The first driving mechanism 300 is connected to the base 210 and is used to drive the coating module 200 to move in a first direction and the opposite second direction. Exemplarily, it is defined that when the coating module 200 moves in the first direction, it moves away from the driving roller 500, and when the coating module 200 moves in the second direction, it approaches the driving roller 500. Through the driving of the base 210 by the first driving mechanism 300, the coating module 200 can reciprocate in the first direction or the second direction and continuously approach or move away from the driving roller 500.

[0040] The second driving mechanism 400 is connected to the base 210 and is used to apply a thrust force towards the first direction or the second direction to the coating module 200, so as to provide assistance during the start-up stage of the coating module 200 and provide resistance during the braking stage of the coating module 200. The second driving mechanism 400 assists the first driving mechanism 300 in driving the coating module 200, realizing the rapid start-up and braking of the coating module 200 and improving the response efficiency of the coating module 200. Specifically, the second driving mechanism 400 provides a thrust force towards the first direction of movement to the base 210 when the coating module 200 is about to move in the first direction and is about to move in the second direction and is about to stop, and provides a thrust force towards the second direction of movement to the base 210 when the coating module 200 is moving in the first direction and is about to stop and when it is about to move in the second direction.

[0041] It should be noted that the thrust applied by the second driving mechanism 400 to the coating module 200 is not sufficient to push the coating module 200 to move along the first direction or the second direction. The movement of the coating module 200 along the first direction or the second direction is achieved by the drive of the first driving mechanism 300. The thrust provided by the second driving mechanism 400 is to give the coating module 200 a tendency to move in the first direction or the second direction, so as to provide assistance in the starting stage of the coating module 200, so that the coating module 200 can start quickly, and provide resistance in the braking stage of the coating module 200, so that the coating module 200 can stop quickly, thereby improving the response efficiency of the coating module 200.

[0042] Specifically, when the coating module 200 completes coating of a coating area and is about to move in the first direction to move away from the transmission roller 500, the second driving mechanism 400 applies a thrust in the first direction to the coating module 200 through the base 210 in advance. The thrust direction is the same as the direction in which the coating module 200 is about to move, giving the coating module 200 an assist force to move in the first direction, so that the coating module 200 has a tendency to move in the first direction. Subsequently, the first driving mechanism 300 drives the coating module 200 to move in the first direction. The coating module 200 is driven by the first driving mechanism 300. 0 and the second driving mechanism 400, reduces the influence of the heavy weight and high inertia of the coating module 200 on the motion sensitivity, so that the coating module 200 can be started quickly; when the coating module 200 is about to stop along the first direction, the second driving mechanism 400 applies a thrust toward the second direction to the coating module 200 through the base 210, and the thrust direction is opposite to the current moving direction of the coating module 200, giving the coating module 200 resistance to move in the first direction, resisting the moving inertia of the coating module 200 along the first direction, and causing the coating module 200 to stop quickly. Similarly, when the coating module 200 is about to move in the second direction, the second driving mechanism 400 applies a thrust toward the second direction to the coating module 200 through the base 210 in advance, and the thrust direction is the same as the direction in which the coating module 200 is about to move, giving the coating module 200 an assist in moving in the second direction, so that the coating module 200 has a tendency to move in the second direction, and then the first driving mechanism 300 drives the coating module 200 to move in the second direction. The coating module 200 is driven by the first driving mechanism 300 and the second driving mechanism 400 and can start quickly; when the coating module 200 is about to stop in the second direction, the second driving mechanism 400 applies a thrust toward the first direction to the coating module 200 through the base 210, and the thrust direction is opposite to the current moving direction of the coating module 200, giving the coating module 200 resistance to moving in the second direction, so that the coating module 200 stops quickly, and the coating roller 220 has a high positioning accuracy and can stably cooperate with the transmission roller 500.

[0043] In one embodiment, the first driving mechanism 300 includes a first power element 310 , which is configured as a pneumatic cylinder, an electric cylinder, etc. The piston rod of the pneumatic cylinder or the electric cylinder is connected to the base 210 and drives the base 210 to move. In another embodiment, the first driving mechanism 300 includes a screw rod 320 and a nut 330, the first power element 310 is configured as a servo motor, the screw rod 320 is connected to the output shaft of the servo motor, the nut 330 is connected to the base 210, the screw rod 320 is passed through the nut 330 and is threadedly connected to the nut 330, the servo motor drives the screw rod 320 to rotate, and the base 210 is synchronously driven to move during the rotation of the screw rod 320; in addition, the servo motor can drive the screw rod 320 forward and reverse, and the base 210 is driven to move in the first direction when the screw rod 320 rotates forward, and the base 210 is driven to move in the second direction when the screw rod 320 reverses; it should be noted that the braking position of the coating module 200 in the first direction and the second direction is precisely controlled by the first driving mechanism 300, and the servo motor and the screw rod 320 are used to cooperate to drive the coating module 200 to move, so as to improve the stability of the movement of the coating module 200 and the position accuracy of the movement of the coating module 200.

[0044] The second drive mechanism 400 includes a second power element 410. The output end of the second power element 410 is connected to the base 210 and applies thrust to the base 210. In one embodiment, the output end of the second power element 410 is movable in a first direction or a second direction. The second power element 410 is configured as a power component capable of outputting linear force, such as a pneumatic cylinder, an electric cylinder, or a linear motor. The output end of the second power element 410 applies thrust to the base 210 by movement and moves synchronously with the base 210 when the base 210 moves in the first direction or the second direction. In another embodiment, the output end of the second power element 410 is rotatable. The second power element 410 rotates to move the base 210, applies thrust to the base 210, and continuously rotates when the base 210 moves in the first direction or the second direction. The second power element 410 is configured as a power component capable of outputting rotational force, such as a motor or a servo.

[0045] Further, refer to Figure 3 and Figure 4, The coating device further includes a transmission mechanism 600. The transmission mechanism 600 includes a first transmission member 610 and a second transmission member 620. One of the first transmission member 610 and the second transmission member 620 is connected to the base 210, and the other is connected to the second driving mechanism 400. Through the cooperation of the first transmission member 610 and the second transmission member 620, the power transmission from the second driving mechanism 400 to the base 210 is achieved. Specifically, the first transmission member 610 includes a first transmission portion 611, and the second transmission member 620 includes a second transmission portion 621. The first transmission portion 611 is provided on both the side in the first direction and the side in the second direction of the second transmission portion 621. That is, the second transmission portion 621 is limited between the two first transmission portions 611 in the first direction or the second direction.

[0046] Exemplarily, taking the second driving mechanism 400 being connected to the first transmission member 610 and the base 210 being connected to the second transmission member 620 as an example, when the second driving mechanism 400 applies a thrust along the first direction to the base 210, the first transmission portion 611 located on one side of the second transmission portion 621 in the second direction abuts against the second transmission portion 621 and applies a thrust towards the first direction to the second transmission portion 621; when the second driving mechanism 400 applies a thrust along the second direction to the base 210, the first transmission portion 611 located on one side of the second transmission portion 621 in the first direction abuts against the second transmission portion 621 and applies a thrust actually towards the second direction to the second transmission portion 621. It can be understood that the second driving mechanism 400 can also be set to be connected to the second transmission member 620, and the base 210 is connected to the first transmission member 610. By using the abutting relationship between the first transmission portion 611 and the second transmission portion 621 to transmit the thrust, the second driving mechanism 400 provides a movement tendency towards the first direction or the second direction to the base 210.

[0047] In other embodiments, in addition to being in mutual abutment, the first transmission member 610 and the second transmission member 620 can also perform power transmission. The first transmission member 610 is in transmission connection with the second transmission member 620. The base 210 is connected to the second transmission member 620, and the second driving mechanism 400 is connected to the first transmission member 610 and can drive the first transmission member 610 to rotate, so that the first transmission member 610 applies a thrust to the second transmission member 620 and drives the second transmission member 620 to move in the first direction or the second direction; that is, in addition to providing a thrust to the second transmission member 620, the first transmission member 610 can also convert the rotational power output by the second driving mechanism 400 into movement through the transmission connection between the first transmission member 610 and the second transmission member 620 and transmit it to the second transmission member 620. When the coating module 200 is about to start, the base 210 can receive the thrust applied by the second driving mechanism 400, and during the movement of the coating module 200 in the first direction or the second direction, the first transmission member 610 and the second transmission member 620 always remain in a transmission connection state, and the second driving mechanism 400 continuously outputs rotational power. The second transmission member 620 moves following the rotation of the first transmission member 610 and is synchronized with the movement of the base 210; therefore, the first transmission member 610 and the second transmission member 620 always remain in a transmission connection state during the start-up, braking, and movement of the coating module 200. The second driving mechanism 400 can directly drive the first transmission member 610 to perform corresponding actions according to the assistance or resistance required by the coating module 200 at different process stages, so as to apply the power required for start-up or the resistance required for braking to the base 210 in a timely manner, further improving the response rate of the coating module 200.

[0048] It should be noted that based on the spacing requirements between the coating areas on the foil material, the coating module 200 has a high reciprocating movement frequency; for example, there is a 8-mm blank space between adjacent coating areas, and the single reciprocating movement time of the coating module 200 is 0.32 ms. Since the reciprocating movement frequency of the coating module 200 is high and the single reciprocating movement time is short, the coating module 200 needs to respond quickly during start-up and braking. In this embodiment, the first transmission member 610 and the second transmission member 620 are always in transmission connection, and the second driving mechanism 400 can directly output power to the first transmission member 610 and apply a thrust in the corresponding direction to the base 210 through the second transmission member 620, thereby assisting the coating module 200 to start or brake quickly, enabling the coating module 200 to meet the requirements of high-frequency coating and improving the coating accuracy.

[0049] Furthermore, the transmission connection method between the first transmission member 610 and the second transmission member 620 is not limited to the first transmission member 610 being set as a worm gear, and the second transmission member 620 being set as a worm. The output end of the second power element 410 can output rotational power, and the worm gear is connected to the output end of the second power element 410 and is driven to rotate by the second power element 410. The worm gear and the worm are meshed and have matching helical teeth. The helical teeth on the worm gear form the first transmission part 611, and the helical teeth on the worm gear form the second transmission part 621. When the second power element 410 drives the worm gear to rotate, the worm gear has a tendency to move along its axis to apply thrust to the base 210. When the coating module 200 moves, the worm gear moves synchronously with the base 210.

[0050] Alternatively, in another embodiment, the first transmission member 610 is configured as a gear, the gear teeth of the gear form the first transmission part 611, the second transmission member 620 is configured as a rack, the meshing teeth of the rack form the second transmission part 621, the output end of the second power element 410 is connected to the gear and drives the gear to rotate, the second transmission member 620 is fixed to the bottom of the base 210, the gear and the rack are meshed, when the second power element 410 drives the gear to rotate, the rack has a tendency to move along its length direction to apply thrust to the base 210, when the coating module 200 moves, the rack and the base 210 move synchronously. When the transmission connection between the first transmission member 610 and the second transmission member 620 is configured as a gear and rack meshing transmission mode, the movement of the first transmission member 610 is smoother, and the second drive mechanism 400 has a higher response rate.

[0051] Furthermore, the first transmission member 610 is configured as a helical gear, and the meshing area between the first transmission member 610 and the second transmission member 620 has a high degree of overlap, so that the first transmission member 610 can provide a stable thrust to the second transmission member 620, ensuring that the coating module 200 can receive a stable thrust during the starting and braking stages; and, the carrying capacity of the transmission mechanism 600 is improved, and the transmission is smoother and the transmission accuracy is high, which can meet the heavy weight, high frequency and high precision coating requirements of the coating module 200.

[0052] The coating module 200 also includes a first driving member 230 for driving the coating roller 220 to rotate. During the rotation of the coating roller 220, the slurry attached to its surface is coated on different areas of the foil. The first driving member 230 is installed on the base 210 and moves synchronously with the base 210 along the first direction and the second direction. The first driving member 230 is arranged above the second driving mechanism 400. On the one hand, the foil is wound around the transmission roller 500 and the coating roller 220 to avoid the foil. On the other hand, the output shaft of the first driving member 230 can be directly connected to the coating roller 220 and drive the coating roller 220 to rotate without transmitting through other components, thereby reducing power transmission loss.

[0053] The coating module 200 further includes a second driving member 240 for driving the coating shaft to move axially. By moving the coating roller 220 axially, the position of the coating roller 220 in the axial direction is changed to adapt to the coating requirements of the foil material, reducing uneven coating on the surface of the foil material and the appearance of patterns. The second driving member 240 is installed on the base 210 and moves along the first direction and the second direction following the base 210. The second driving member 240 is disposed above the second driving mechanism 400. Further, the coating module 200 further includes a moving seat 250. The moving seat 250 is slidably connected to the base 210 along the axis of the coating roller 220. The second driving member 240 is connected to the moving seat 250 and drives the moving seat 250 to move relative to the base 210, and changes the position of the coating roller 220 on its axis.

[0054] The first driving member 230 and the second driving member 240 are respectively disposed on opposite sides of the base 210 along the axial direction of the coating roller 220. On the one hand, the gravity of the base 210 is balanced, so that the center of mass of the base 210 is close to the structural center, and both sides of the base 210 are kept synchronized during the movement. On the other hand, the space on both sides of the base 210 is fully utilized to provide installation space for the first driving mechanism 300 and the second driving mechanism 400.

[0055] The coating module 200 further includes a squeegee 260. The squeegee 260 is used to scrape off the excess slurry on the surface of the coating roller 220, making the coating of the coating roller 220 on the foil material more uniform. The squeegee 260 is installed on the base 210 and moves along the first direction and the second direction following the base 210. The squeegee 260 is located on one side of the coating roller 220 in the first direction, facilitating the cooperation of the squeegee 260 with the coating roller 220 in the radial direction of the coating roller 220.

[0056] The coating device further includes a driving roller 500 and a third driving member 501 for driving the driving roller 500 to rotate. The driving roller 500 is used for winding the foil material. When the driving roller 500 rotates under the drive of the third driving member 501, it drives the foil material to move, realizing the conveying of the foil material. The driving roller 500 and the coating roller 220 are arranged side by side. During the conveying of the foil material, the coating roller 220 continuously rotates and coats the slurry at different regions on its surface at different positions of the foil material. The driving roller 500 is located on one side of the coating roller 220 along the second direction. Thus, the driving roller 500 and the squeegee 260 are respectively located on opposite sides of the coating roller 220. The squeegee 260 first scrapes off the excess slurry on the surface of the coating roller 220 to make the slurry evenly distributed on the surface of the coating roller 220. Then the coating roller 220 contacts the foil material and evenly coats the slurry on the surface of the foil material. The output shaft of the third driving member 501 is directly connected to the driving roller 500, with high power transmission; the first driving mechanism 300 is installed on the frame 100 and is arranged below the third driving member 501 to utilize the space below the third driving member 501. At the same time, the second driving mechanism 400 is arranged below the first driving member 230. The first driving mechanism 300 and the second driving mechanism 400 can make full use of the space below the first driving member 230 and the third driving member 501, facilitating the layout of each power component in the coating device; since the base 210 is located on one side of the first driving mechanism 300 in the first direction, the first driving mechanism 300 outputs the power for driving the coating module 200 to move through a screw structure. Both ends of the screw structure are directly connected to the first power element 310 and the base 210, improving the power transmission efficiency of the first driving mechanism 300 to the base 210 and enabling the base 210 to respond quickly.

[0057] It can be understood that a material tank is provided below the coating roller 220, and the slurry is stored in the material tank. Part of the coating roller 220 is immersed in the slurry in the material tank. During the rotation of the coating roller 220, the slurry adheres to the surface of the coating roller 220 and is carried out of the material tank by the coating roller 220. Further, the coating roller 220 is set as a gravure roller, and grooves are provided on the circumferential side of the coating roller 220. When the coating roller 220 is immersed in the slurry in the material tank, the slurry flows into the grooves and is accommodated in the grooves. After the coating roller 220 scrapes off the excess slurry, the slurry on the surface of the coating roller 220 tends to be uniform. It should be noted that the material tank is in a fixed state and does not move with the base 210, which can reduce the overall weight of the coating module 200. During the reciprocating movement of the coating roller 220 along the first direction and the second direction, a part of the coating roller 220 is always immersed in the slurry in the material tank and can continuously cooperate with the squeegee 260, enabling the coating roller 220 to always have the ability to evenly coat the slurry on the foil material at any time. When the coating roller 220 moves to contact the foil material, it can coat the slurry on the foil material.

[0058] It should be noted that since the coating module 200 includes many components that cooperate with the coating roller 220 for coating, such as the first driving member 230, the second driving member 240, the moving seat 250, the scraper 260, etc., and the coating device includes the driving roller 500, the third driving member 501 for driving the driving roller 500 to rotate, the material tank, etc., the space on the frame 100 available for installing the first driving mechanism 300 and the second driving mechanism 400 is small. In the present utility model, the first driving mechanism 300 is arranged below the third driving member 501 and on one side of the base 210 in the second direction, the second driving mechanism 400 is arranged below the base 210, and the transmission mechanism 600 is arranged between the second driving mechanism 400 and the base 210, which can make full use of the space below the third driving member 501, the first driving member 230, and the second driving member 240. Moreover, the first driving mechanism 300 directly transmits power to the base 210 through the screw structure, and the second driving mechanism 400 realizes the switching of rotational power to moving power through the transmission of the transmission mechanism 600, so that the second driving mechanism 400 provides a thrust force towards the first direction or the second direction to the base 210, and improves the reaction rate of the coating module 200.

[0059] Refer to Figure 1 With Figure 5 , the coating device includes two first driving mechanisms 300 that perform synchronous actions and are respectively arranged on opposite sides of the frame 100 along the axis of the coating roller 220, and two second driving mechanisms 400 that perform synchronous actions and are respectively arranged on opposite sides of the frame 100 along the axis of the coating roller 220. The coating module 200 includes two bases 210 arranged at intervals along the axis of the coating roller 220. Each base 210 is connected with one first driving mechanism 300 and one second driving mechanism 400. The two second driving mechanisms 400 synchronously apply a thrust force to the two bases 210, and the two first driving mechanisms 300 synchronously drive the two bases 210 to move, so that both ends of the coating module 200 on the axis of the coating roller 220 move synchronously. The coating roller 220 has high straightness, avoiding wrinkling during the coating process of the foil material.

[0060] It can be understood that the coating device includes a system module. Both the first driving mechanism 300 and the second driving mechanism 400 are communicatively connected to the system module. The system module is used to send instructions to the first driving mechanism 300 and the second driving mechanism 400, so that the two first driving mechanisms 300 and the two second driving mechanisms 400 perform synchronous actions, and switch the start-stop states of the first driving mechanism 300 and the second driving mechanism 400 and the direction of driving the coating module 200 to move.

[0061] In addition, a guiding structure 700 extending in the first direction is provided on the frame 100. The guiding structure 700 is arranged between the frame 100 and the base 210 and is used to guide the movement of the base 210, so as to improve the synchronism of the movement of the two bases 210 and the straightness of the coating roller 220. The guiding structure 700 is not limited to being set as a hole-shaft fitting structure, a slider-rail fitting structure, etc.

[0062] Specifically, when the coating device coats the foil, the coating module 200 is driven to reciprocate between the first position and the second position. The first position is defined as the position where the coating roller 220 contacts the foil and performs coating, and the second position is the position where the coating roller 220 moves to the farthest distance from the driving roller 500. First, the coating module 200 in the first position performs the coating operation; at this time, the coating roller 220 contacts the foil wound around the driving roller 500, and as the coating roller 220 and the driving roller 500 rotate, the coating roller 220 continuously coats the slurry on different positions of the foil. After the coating of a certain coating area of the foil is completed and the coating module 200 is about to move away from the first position, the second driving mechanism 400 applies a thrust force in the first direction to the coating module 200 in the first position, so that the coating module 200 has a tendency to move in the first direction, assisting the start of the coating module 200, and the coating module 200 still remains in the first position. Subsequently, the first driving mechanism 300 acts and drives the coating module 200 to move in the first direction. The coating module 200 gradually moves away from the first position and approaches the second position. When the coating module 200 is about to reach the second position, the coating module 200 needs to stop at the second position first and then return to the first position along the second direction. At this time, the second driving mechanism 400 applies a thrust force in the second direction to the coating module 200 to provide resistance to the movement of the coating module 200 in the first direction, assisting the coating module 200 to brake. The first driving mechanism 300 stops driving, and the coating module 200 moves to the second position and brakes. At this time, the coating module 200 needs to immediately return to the first position in the second direction. Therefore, the second driving mechanism 400 applies a thrust force in the second direction to the coating module 200, so that the coating module 200 has a tendency to move in the second direction, assisting the start of the coating module 200, and the coating module 200 still remains in the second position. Subsequently, the first driving mechanism 300 acts and drives the coating module 200 to move in the second direction. The coating modules 200 move away from the second position and approach the first position. When the coating module 200 is about to reach the first position, the second driving mechanism 400 applies a thrust force in the first direction to the coating module 200 to provide resistance to the movement of the coating module 200 in the second direction, assisting the coating module 200 to brake. The first driving mechanism 300 stops driving, and the coating module 200 moves to the first position and brakes. At this time, the coating module 200 contacts the foil and performs the coating operation again.

[0063] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant technical field. In addition, the embodiments of the present utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A coating device, characterized in that: include: frame; A coating module, comprising a base and a coating roller rotatably connected to the base, wherein the base is movably mounted on the frame; a first driving mechanism connected to the base and configured to drive the coating module to move in a first direction and an opposite second direction; A second driving mechanism is connected to the base and is used to provide a thrust to the base toward the first direction when the coating module is about to move along the first direction and moves along the second direction and is about to stop, and to provide a thrust to the base toward the second direction when the coating module moves along the first direction and is about to stop and is about to move along the second direction.

2. The coating device according to claim 1, characterized in that The second driving mechanism includes a second power element, an output end of the second power element is connected to the base, and the output end of the second power element can move along the first direction or the second direction and apply thrust to the base.

3. The coating device according to claim 1, characterized in that The coating device includes a transmission mechanism, which includes a first transmission member and a second transmission member. The first transmission member includes a first transmission part, and the second transmission member includes a second transmission part. The second transmission part is provided with the first transmission part on the side of the first direction and the second direction, and can be abutted against the first transmission part. One of the first transmission member and the second transmission member is connected to the base, and the other is connected to the second driving mechanism.

4. The coating device according to claim 3, characterized in that The first transmission member is in transmission connection with the second transmission member, the base is connected with the second transmission member, and the second driving mechanism is connected with the first transmission member and is used to drive the first transmission member to rotate, so that the first transmission member applies thrust to the second transmission member and drives the second transmission member to move along the first direction and the second direction.

5. The coating device according to claim 3, characterized in that The first transmission member is configured as a helical gear and is connected to the second driving mechanism. The second driving mechanism is used to drive the helical gear to rotate. The second transmission member is configured as a rack meshing with the helical gear. The second transmission member is connected to the base.

6. The coating device according to claim 1, characterized in that The second driving mechanism is located below the base.

7. The coating device according to claim 1 or 6, characterized in that: The first driving mechanism is disposed on one side of the base in the second direction.

8. The coating device according to claim 1, characterized in that The coating module further includes a first driving member for driving the coating roller to rotate, wherein the first driving member is mounted on the base and located above the second driving mechanism; And / or, the coating module further comprises a second driving member for driving the coating roller to move axially, the second driving member being mounted on the base and located above the second driving mechanism; And / or, the coating module further comprises a scraper, the scraper being mounted on the base and located on one side of the coating roller in the first direction, the scraper being used to scrape off excess slurry on the surface of the coating roller; And / or, the coating device also includes a transmission roller and a third driving member that drives the transmission roller to rotate, the transmission roller is located on one side of the coating roller along the second direction, the third driving member is installed on the frame, and the first driving mechanism is arranged below the third driving member.

9. The coating device according to claim 1, characterized in that The coating device includes two first drive mechanisms that move synchronously and are respectively arranged on opposite sides of the frame along the axis of the coating roller, and also includes two second drive mechanisms that move synchronously and are respectively arranged on opposite sides of the frame along the axis of the coating roller. The coating module includes two bases arranged at intervals along the axis of the coating roller, and each of the bases is connected to one first drive mechanism and one second drive mechanism.

10. The coating device according to claim 1, characterized in that A guide structure extending along the first direction is provided between the base and the frame.

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