A closed-loop adjustment device for coating die head

Abstract

This invention discloses a closed-loop adjustment device for a coating die head, comprising: a support, a horizontal motion module, a vertical motion module, a rotating module, a control system, and a sensing element. After the position of the flow adjustment mechanism to be adjusted is determined, the control system controls the horizontal motion module to move to the corresponding position. When the horizontal motion module corresponds to the position of the flow adjustment mechanism, the sensing element on the rotating module measures the distance parameter between the flow adjustment mechanism and the rotating module, and feeds this distance parameter back to the control system. This, in turn, controls the vertical pad to slide relative to the sliding end in the vertical direction, causing the rotating module to move up and down. This connects the rotating clamp of the rotating module with the flow adjustment mechanism, causing the flow adjustment mechanism to rotate quantitatively, thereby achieving the purpose of flow adjustment. This device provides precise positioning and adjustment, avoids over-adjustment, achieves precise adjustment control, and improves coating quality.

Description

Technical Field

[0001] This invention relates to the technical field of coating machines and coating machine accessories, specifically to a closed-loop adjustment device for a coating die head. Background Technology

[0002] Slot coating, a precision wet coating technology, works by extruding slurry under pressure and flow rate through the slots of a coating die, transferring it onto the substrate. Compared to other coating methods, it offers many advantages, such as high coating speed, high precision, and uniform wet thickness; the closed coating system prevents contaminants from entering during the coating process; high slurry utilization; stable slurry properties; and adaptability to different slurry viscosities and solid content ranges.

[0003] The current coating die head consists of an upper die head, a lower die head, a flow regulating mechanism, and a gasket sandwiched between them. The height of the gasket determines the height of the coating slit. During the coating process, due to factors such as slurry temperature or viscosity, the coating thickness is uneven, requiring adjustment of the coating thickness.

[0004] In existing technologies, a manual flow adjustment mechanism is installed on the coating die head to adjust the height of the gasket, thereby regulating the flow rate in the coating slit and thus adjusting the coating thickness. However, manual adjustment is susceptible to human error, leading to significant errors, such as insufficient or excessive adjustment, resulting in uneven coating thickness and poor coating quality. Furthermore, manual operation results in low efficiency, hindering automated production. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a closed-loop adjustment device for coating dies, so as to solve the problems of large adjustment errors, uneven coating thickness, and poor coating quality caused by manual operation in the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] A closed-loop adjustment device for a coating die head includes: a support, a horizontal motion module, a vertical motion module, a rotary module, a sensing element, and a control system; the length direction of the support is consistent with the arrangement direction of multiple flow adjustment mechanisms on the coating die head; the horizontal motion module is mounted on the support, and the sliding end of the horizontal motion module performs horizontal linear reciprocating motion along the length direction of the support; the vertical motion module includes a first drive mechanism mounted on the sliding end, and a vertical pad connected to the output end of the first drive mechanism, the vertical pad performing sliding motion relative to the sliding end in the vertical direction; the rotary module is mounted on the vertical pad. On the plate, the rotating module is provided with a rotating clamp suitable for driving the flow regulating mechanism to rotate quantitatively; the control system is set on the bracket, and the horizontal motion module, the vertical motion module and the rotating module are all communicatively connected to the control system. The control system is adapted to control the start and stop of the horizontal motion module, the vertical motion module and the rotating module; the sensing element is fixedly installed on the rotating module and communicatively connected to the control system. The sensing element is adapted to measure the distance parameter between the flow regulating mechanism and the rotating module and feed it back to the control system to control the start and stop of the vertical motion module.

[0008] According to some embodiments of the present invention, the horizontal motion module is a linear motor, the sliding end is provided with a horizontal pad, the vertical motion module is fixedly installed on the horizontal pad, the sliding direction of the sliding end is consistent with the length direction of the bracket, and the horizontal pad slides with the sliding end to drive the vertical motion module to slide horizontally.

[0009] According to some embodiments of the present invention, the horizontal motion module is a ball screw linear module or a synchronous belt linear module.

[0010] According to some embodiments of the present invention, the vertical motion module further includes a back plate vertically fixed to the horizontal pad, the first drive mechanism is fixed to the top of the back plate, the vertical pad is slidably mounted on the side of the back plate facing the flow regulating mechanism, and the output end of the drive mechanism is connected to the vertical pad to drive the vertical pad to slide vertically on the back plate.

[0011] According to some embodiments of the present invention, a vertical guide rail is provided on the side of the back plate facing the flow regulating mechanism, and the vertical pad is connected to the vertical guide rail.

[0012] According to some embodiments of the present invention, the first driving mechanism is a cylinder.

[0013] According to some embodiments of the present invention, the rotating module further includes a second driving mechanism fixedly mounted on the vertical pad, the second driving mechanism being pulsatorically connected to the rotating clamping member, and the second driving mechanism driving the rotating clamping member to rotate.

[0014] According to some embodiments of the present invention, the rotating clamping member includes a rotating finger cylinder and a gripper that are tractively connected to the second driving mechanism, wherein the rotating finger cylinder drives the gripper to clamp or release.

[0015] According to some embodiments of the present invention, the bracket is fixedly mounted on the coating die head.

[0016] According to some embodiments of the present invention, the sensing element is a laser displacement sensor.

[0017] The technical solution of this invention has the following advantages:

[0018] The coating die head closed-loop adjustment device provided by this invention comprises a horizontal motion module fixed on a support, a sliding end of the horizontal motion module fixedly connected to a vertical motion module, and a rotating module fixedly connected to a vertical pad of the vertical motion module. When the flow adjustment mechanism on the coating die head needs adjustment, the control system controls the sliding end of the horizontal motion module to perform horizontal linear reciprocating motion along the length of the support, based on the position of the flow adjustment mechanism to be adjusted, thereby driving the vertical motion module and the rotating module to slide to the corresponding position of the flow adjustment mechanism. When the position of the horizontal motion module corresponds to the position of the flow adjustment mechanism to be adjusted, the sensing element on the rotating module measures the distance parameter between the flow adjustment mechanism and the rotating module, and feeds the distance parameter back to the control system, thereby controlling the vertical pad to slide relative to the sliding end in the vertical direction, driving the rotating module to perform lifting and lowering motion, so that the rotating clamp of the rotating module connects with the flow adjustment mechanism, driving the flow adjustment mechanism to rotate quantitatively, thereby achieving the purpose of flow adjustment. This device achieves precise positioning and adjustment, avoids over-adjustment, realizes precise adjustment control, and improves coating quality. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a coating die head structure equipped with a closed-loop adjustment device in some embodiments of the present invention;

[0021] Figure 2This is a schematic diagram of a closed-loop adjustment device equipped with a coating die head structure in some embodiments of the present invention;

[0022] Figure 3 This is a schematic diagram of the vertical motion module in some embodiments of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the vertical motion module and the rotation module in some embodiments of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Support; 2. Horizontal motion module; 3. Vertical motion module; 4. Rotation module; 5. Coating die head; 6. Flow regulation mechanism; 7. Sensing element; 21. Sliding end; 22. Horizontal pad; 31. First drive mechanism; 32. Vertical pad; 33. Back plate; 34. Vertical guide rail; 41. Rotary clamping component; 42. Second drive mechanism; 411. Gripper; 412. Rotary finger cylinder. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Reference Figures 1 to 4 As shown, the present invention proposes a closed-loop adjustment device for a coating die 5, comprising: a support 1, a horizontal motion module 2, a vertical motion module 3, a rotation module 4, a sensing element 7, and a control system; the length direction of the support 1 is consistent with the arrangement direction of the multiple flow adjustment mechanisms 6 on the coating die 5; the horizontal motion module 2 is mounted on the support 1, and the sliding end 21 of the horizontal motion module 2 performs horizontal linear reciprocating motion along the length direction of the support 1; the vertical motion module 3 includes a first drive mechanism 31 mounted on the sliding end 21, and a vertical pad 32 that is drively connected to the output end of the first drive mechanism 31, the vertical pad 32 being positioned relative to the sliding end 21 at... The system performs a sliding motion in the vertical direction; the rotating module 4 is mounted on the vertical pad 32, and the rotating module 4 is equipped with a rotating clamp 41 suitable for driving the flow regulating mechanism 6 to rotate quantitatively; the control system is set on the bracket 1, and the horizontal motion module 2, the vertical motion module 3 and the rotating module 4 are all communicatively connected to the control system. The control system is suitable for controlling the start and stop of the horizontal motion module 2, the vertical motion module 3 and the rotating module 4; the sensing element 7 is mounted on the rotating module 4 and communicatively connected to the control system. The sensing element 7 is suitable for measuring the distance parameter between the flow regulating mechanism 6 and the rotating module 4 and feeding it back to the control system to control the start and stop of the vertical motion module 3.

[0030] Specifically, the horizontal motion module 2 is fixed to the support 1, and the sliding end 21 of the horizontal motion module 2 is fixedly connected to the vertical motion module 3. The rotating module 4 is fixedly connected to the vertical pad 32 of the vertical motion module 3. When the flow adjustment mechanism 6 on the coating die head 5 needs to be adjusted, the control system controls the sliding end 21 of the horizontal motion module 2 to perform horizontal linear reciprocating motion along the length of the support 1 according to the position of the flow adjustment mechanism 6 to be adjusted, thereby driving the vertical motion module 3 and the rotating module 4 to slide to the corresponding position of the flow adjustment mechanism 6. When the position of the section mechanism 6 is corresponding, the sensing element 7 set on the rotating module 4 measures the distance parameter between the flow regulating mechanism 6 and the rotating module 4, and feeds the distance parameter back to the control system. The control system controls the vertical pad 32 to slide relative to the sliding end 21 in the vertical direction, driving the rotating module 4 to move up and down, so that the rotating clamp 41 of the rotating module 4 can be connected to the flow regulating mechanism 6, driving the flow regulating mechanism 6 to rotate quantitatively, so as to achieve the purpose of regulating the flow, play the role of precise positioning and regulation, avoid over-regulation, achieve precise regulation and control, and improve the coating quality.

[0031] It is understood that the flow regulation mechanism 6 is a differential head. The differential head drives the movement of the T-block to regulate the flow rate in the coating slit, thereby adjusting the coating thickness. After the position of the flow regulation mechanism 6 to be adjusted is determined, the control system controls the horizontal motion module 2 to move to the position of the flow regulation mechanism 6 to be adjusted. The sensing element 7 detects the height parameter of the flow regulation mechanism 6 and feeds it back to the control system. Based on the feedback parameter signal, the control system controls the vertical motion module 3 to drive the rotating module 4 to rise or fall, so that the rotating clamping member 41 can clamp and fix the flow regulation mechanism 6. The rotating clamping member 41 drives the flow regulation mechanism 6 to rotate quantitatively, thereby realizing flow regulation.

[0032] In some embodiments of the present invention, the horizontal motion module 2 is a linear motor, the sliding end 21 is provided with a horizontal pad 22, the vertical motion module 3 is fixedly installed on the horizontal pad 22, the sliding direction of the sliding end 21 is consistent with the length direction of the bracket 1, and the horizontal pad 22 slides with the sliding end 21 to drive the vertical motion module 3 to slide horizontally.

[0033] Specifically, due to the large mass of the vertical motion module 3 and the rotating module 4, to avoid instability during the sliding process caused by inertia and an excessively high center of gravity, a horizontal pad 22 is installed at the sliding end 21 to provide mounting support for the vertical motion module 3, ensuring the stability of the horizontal motion module 2 during horizontal sliding motion. It is understood that the horizontal motion module 2 in this invention uses a linear motor. Linear motors have many advantages, such as simple structure, high positioning accuracy, fast response speed, and safety and reliability. During linear motion, linear motors can achieve direct transmission, avoiding positioning errors caused by intermediate links, making them suitable for automated systems and beneficial for improving the degree of automation.

[0034] In some embodiments of the present invention, the horizontal motion module 2 is a ball screw linear module or a synchronous belt linear module.

[0035] It is understood that ball screw linear modules or synchronous belt linear modules also have the advantage of high precision and are applicable to this invention. Therefore, the specific structure of the horizontal motion module 2 is not a limitation of this invention.

[0036] Reference Figure 3 As shown, in some embodiments of the present invention, the vertical motion module 3 further includes a back plate 33 vertically fixed on the horizontal pad 22, a first drive mechanism 31 fixed on the top of the back plate 33, a vertical pad 32 slidably mounted on the side of the back plate 33 facing the flow regulating mechanism 6, and the output end of the drive mechanism is connected to the vertical pad 32 in a transmission connection to drive the vertical pad 32 to slide vertically on the back plate 33.

[0037] Specifically, the back plate 33 is fixedly installed on the horizontal pad 22. The back plate 33 provides the mounting base for the first drive mechanism 31 and the vertical pad 32. The first drive mechanism 31 drives the vertical pad 32 to slide vertically. Since the rotating module 4 needs to be installed on the vertical pad 32, and the rotating module 4 is connected to the flow regulation mechanism 6, the vertical pad 32 needs to be installed on the side of the back plate 33 facing the flow regulation mechanism 6, so that the rotating module 4 can be set opposite to the flow regulation mechanism 6.

[0038] In some embodiments of the present invention, a vertical guide rail 34 is provided on the side of the back plate 33 facing the flow regulating mechanism 6, and the vertical pad 32 is connected to the vertical guide rail 34.

[0039] Specifically, the vertical pad 32 is connected to the vertical guide rail 34 to reduce the friction of the vertical pad 32 during vertical sliding, while ensuring the stability of the vertical pad 32 during sliding and avoiding adjustment errors caused by vibration of the rotating module 4. In addition, the cooperation between the vertical guide rail 34 and the vertical pad further improves the adjustment accuracy. By controlling the sliding amount of the vertical pad 32 and the vertical guide rail 34, the descent and rise height of the rotating module 4 can be controlled, ensuring that the rotating clamping member 41 in the rotating module 4 can be clamped and connected to the flow regulating mechanism 6.

[0040] In some embodiments of the present invention, the first drive mechanism 31 is a cylinder.

[0041] Specifically, the advantages of using a cylinder are that it is low in cost, simple in structure, and easy to maintain. Furthermore, the cylinder offers good stability, ensuring the stability of the vertical pad 32's sliding in the vertical direction and improving adjustment accuracy. The first drive mechanism 31 can also be a hydraulic drive mechanism or a motor drive mechanism; the specific structure of the first drive mechanism 31 is not intended to limit the invention.

[0042] Reference Figure 4 As shown, in some embodiments of the present invention, the rotating module 4 further includes a second driving mechanism 42 fixedly mounted on the vertical pad 32. The second driving mechanism 42 is connected to the rotating clamping member 41 in a transmission manner, and the second driving mechanism 42 drives the rotating clamping member 41 to rotate.

[0043] Specifically, after the rotating clamping member 41 is clamped and fixed with the flow regulating mechanism 6, the second driving mechanism 42 drives the rotating clamping member 41 to rotate, thereby driving the flow regulating mechanism 6 to rotate. By controlling the direction of rotation, the height of the flow regulating mechanism 6 is adjusted, thus achieving flow control regulation. The vertical pad 32 provides mounting support for the second driving mechanism 42 and the rotating clamping member 41. The second driving mechanism 42 specifically consists of a servo motor and a reducer connected to the output end of the servo motor. The reducer is suitable for reducing the speed to achieve precise control. The specific structure of the second driving mechanism 42 is not intended to limit the invention.

[0044] In some embodiments of the present invention, the rotating clamping member 41 includes a rotating finger cylinder 412 and a gripper 411 that are tractively connected to the second driving mechanism 42, wherein the rotating finger cylinder 412 drives the gripper 411 to clamp or release.

[0045] Specifically, the rotating clamping member 41 rotates as driven by the second driving mechanism 42. The rotating finger cylinder 412 clamps or releases the gripper 411, thereby fixing or releasing the gripper 411 from the flow regulating mechanism 6, and driving the flow regulating mechanism 6 to rotate.

[0046] Reference Figure 1 As shown, in some embodiments of the present invention, the bracket 1 is fixedly mounted on the coating die head 5.

[0047] Specifically, the bracket 1 is fixedly installed on the coating die 5. The length direction of the bracket 1 is consistent with the length direction of the coating slit of the coating die 5, that is, the length direction of the bracket 1 is consistent with the installation distribution direction of the multiple flow adjustment mechanisms 6. The horizontal motion module 2 slides horizontally along the length direction of the bracket 1 to position and adjust the multiple flow adjustment mechanisms 6. This closed-loop adjustment device is directly installed on the coating die 5 without the need to modify the existing coating die 5, and has strong adaptability and compatibility. It can be understood that the bracket 1 can also be installed on the frame of the coating machine or suspended above the coating die 5, as long as it can ensure that the closed-loop adjustment device can position and adjust the flow adjustment mechanisms 6 on the coating die 5.

[0048] In some embodiments of the present invention, the sensing element 7 is a laser displacement sensor.

[0049] Specifically, the sensing element 7 is used to measure the distance parameter between itself and the flow regulating mechanism 6 to be regulated, and then feeds it back to the control system to control the start and stop of the vertical motion module 3. The vertical motion module 3 drives the rotating module 4 to move. The control system outputs a signal to control the rotating finger cylinder 412 to drive the gripper 411 to connect with the flow regulating mechanism 6, so as to achieve precise positioning, improve accuracy, improve automation and adjustment response speed, and improve the yield of battery electrode sheets.

[0050] Specifically, in some embodiments of the present invention, the sensing element 7 is a laser displacement sensor. The laser emitter projects a laser beam onto the upper surface of the flow regulating mechanism 6 through a lens. The laser beam reflected from the upper surface of the flow regulating mechanism 6 passes through the receiver lens and is received by the internal imaging element. The projection positions of the light spots at different distances on the imaging element are different. Based on the imaging position and optical projection relationship, the distance to the object being measured can be obtained. The imaging element has extremely high position resolution, thereby achieving extremely high measurement accuracy. The laser displacement sensor can accurately measure the position, displacement, and other information of the object being measured, with an accuracy reaching the micrometer or even nanometer level. The sensing element 7 is mainly used to determine the height position of the rotating module 4 to the flow regulating mechanism 6. Therefore, under the condition that this condition is met, the type and specifications of the sensing element 7 are not considered as limitations of the present invention.

[0051] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A closed-loop adjustment device for a coating die head, characterized in that, include: The support (1) is aligned with the direction of the multiple flow adjustment mechanisms (6) on the coating die (5) along its length. A horizontal motion module (2) is mounted on the support (1), and the sliding end (21) of the horizontal motion module (2) moves horizontally in a straight line along the length direction of the support (1). The vertical motion module (3) includes a first drive mechanism (31) disposed on the sliding end (21) and a vertical pad (32) that is connected to the output end of the first drive mechanism (31). The vertical pad (32) slides relative to the sliding end (21) in the vertical direction. A rotating module (4) is mounted on the vertical pad (32), and the rotating module (4) is provided with a rotating clamping member (41) suitable for driving the flow regulating mechanism (6) to rotate quantitatively; The control system is mounted on the support (1). The horizontal motion module (2), the vertical motion module (3), and the rotating module (4) are all communicatively connected to the control system. The control system is adapted to control the start and stop of the horizontal motion module (2), the vertical motion module (3), and the rotating module (4). The sensing element (7) is fixedly installed on the rotating module (4) and communicates with the control system. The sensing element (7) is adapted to measure the distance parameter between the flow regulating mechanism (6) and the rotating module (4) and feed it back to the control system to control the start and stop of the vertical motion module (3).

2. The coating die head closed-loop adjustment device according to claim 1, characterized in that, The horizontal motion module (2) is a linear motor. The sliding end (21) is provided with a horizontal pad (22). The vertical motion module (3) is fixedly installed on the horizontal pad (22). The sliding direction of the sliding end (21) is consistent with the length direction of the bracket (1). The horizontal pad (22) slides with the sliding end (21) to drive the vertical motion module (3) to slide horizontally.

3. The coating die head closed-loop adjustment device according to claim 1, characterized in that, The horizontal motion module (2) is a ball screw linear module or a synchronous belt linear module.

4. The coating die head closed-loop adjustment device according to claim 2, characterized in that, The vertical motion module (3) also includes a back plate (33) vertically fixed on the horizontal pad (22), the first drive mechanism (31) is fixed on the top of the back plate (33), the vertical pad (32) is slidably installed on the side of the back plate (33) facing the flow regulating mechanism (6), and the output end of the drive mechanism is connected to the vertical pad (32) to drive the vertical pad (32) to slide vertically on the back plate (33).

5. The coating die head closed-loop adjustment device according to claim 4, characterized in that, The back plate (33) has a vertical guide rail (34) on the side facing the flow regulating mechanism (6), and the vertical pad (32) is connected to the vertical guide rail (34).

6. The closed-loop adjustment device for the coating die head according to claim 4, characterized in that, The first drive mechanism (31) is a cylinder.

7. The coating die head closed-loop adjustment device according to claim 1, characterized in that, The rotating module (4) further includes a second driving mechanism (42) fixedly installed on the vertical pad (32). The second driving mechanism (42) is connected to the rotating clamping member (41) in a transmission manner, and the second driving mechanism (42) drives the rotating clamping member (41) to rotate.

8. The coating die head closed-loop adjustment device according to claim 7, characterized in that, The rotating clamping member (41) includes a rotating finger cylinder (412) and a gripper (411) that are connected to the second driving mechanism (42). The rotating finger cylinder (412) drives the gripper (411) to clamp or release.

9. The coating die head closed-loop adjustment device according to claim 1, characterized in that, The bracket (1) is fixedly installed on the coating die head (5).

10. The closed-loop adjustment device for the coating die head according to claim 1, characterized in that, The sensing element (7) is a laser displacement sensor.

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