Coating press mechanism and coating apparatus

Abstract

The application relates to a coating pressure roller mechanism and a coating device. The coating pressure roller mechanism comprises a lifting driving module and a pressure roller executing module; the pressure roller executing module comprises a pressing mechanism, a first pressure roller assembly and a second pressure roller assembly, and the first pressure roller assembly and the second pressure roller assembly are arranged side by side; wherein the lifting driving module is in transmission connection with the pressure roller executing module and is used for driving the pressure roller executing module to move along a preset direction; the output end of the pressing mechanism is connected with the first pressure roller assembly and is used for driving the first pressure roller assembly to move to press or separate the second pressure roller assembly. The scheme provided by the application can realize optimization of contact stress in a coating roller pressing process, significantly prolongs the service life, can automatically match different diameter gravure rollers, reduces equipment debugging time and maintains the process stability of coating thickness.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to coating roller mechanism and coating equipment. Background Technology

[0002] In the lithium battery electrode coating process, the gravure printing coating process places extremely stringent performance requirements on the pressure roller mechanism. In related technologies, the pressure roller mechanism typically employs a single-layer rubber roller directly pressing against the gravure roller. This structure has two main drawbacks: First, the rubber roller experiences uneven radial stress during long-term operation, leading to localized wear and deformation on its surface. This significantly shortens the roller's lifespan and increases equipment downtime due to frequent roller replacements. Second, when adapting to gravure rollers of different diameters, operators must manually adjust the pressure roller's height. This manual adjustment is not only time-consuming but also difficult to guarantee precise positioning, ultimately resulting in uneven coating thickness. These technical defects severely affect the consistency of lithium battery electrode coating quality and restrict the production line's operational efficiency.

[0003] Therefore, the relevant technologies urgently need improvement. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a coating roller mechanism and coating equipment that can optimize the contact stress during the coating roller pressing process, significantly extending its service life. Simultaneously, it can automatically match gravure rollers of different diameters, reducing equipment setup time and maintaining the process stability of coating thickness.

[0005] The first aspect of this application provides a coating roller mechanism, comprising: Lifting drive module; The pressure roller execution module includes a pressure application mechanism, a first pressure roller assembly, and a second pressure roller assembly, wherein the first pressure roller assembly and the second pressure roller assembly are arranged side by side. The lifting drive module is connected to the pressure roller execution module and is used to drive the pressure roller execution module to move in a preset direction; the output end of the pressure applying mechanism is connected to the first pressure roller assembly and is used to drive the first pressure roller assembly to move to press or disengage from the second pressure roller assembly.

[0006] In one embodiment, the system further includes a linkage support module, which includes a first guide component and a second guide component. The lifting drive module drives the pressure roller execution module to move through the first guide component, and the pressure application mechanism drives the first pressure roller component to move through the second guide component.

[0007] In one embodiment, the linkage support module includes a first bearing portion and a second bearing portion, wherein the first bearing portion and the second bearing portion are respectively fixed to the first slider and the second slider of the first guide assembly.

[0008] In one embodiment, the fixed seat of the pressure applying mechanism is installed on the first bearing part, the track of the second guide assembly and the mounting base of the second pressure roller assembly are fixedly connected to the second bearing part, and the mounting base of the first pressure roller assembly is fixed on the third slider of the second guide assembly.

[0009] In one embodiment, the system further includes a frame to which the track of the first guide assembly is fixed.

[0010] In one embodiment, the pressure applying mechanism includes a fixed end and a telescopic end, the fixed end being mounted on the first bearing portion, and the telescopic end being connected to the mounting base of the first pressure roller assembly.

[0011] In one embodiment, a travel limit unit is further included. The travel limit unit is disposed at the lifting path of the pressure roller execution module. The signal output terminal of the travel limit unit is communicatively connected to the control system of the lifting drive module and is used to control the lifting stroke position of the pressure roller execution module.

[0012] In one embodiment, the system further includes a gravure roller, which is arranged side by side with the second pressure roller assembly and located on the side of the second pressure roller assembly away from the first pressure roller assembly; the lifting drive module drives the pressure roller execution module to move as a whole, so that the second pressure roller assembly presses against the surface of the gravure roller; The diameter of the gravure roller varies from 150mm to 360mm.

[0013] In one embodiment, the roller body hardness of the first pressure roller assembly is greater than that of the second pressure roller assembly; or, the roller body of the first pressure roller assembly is made of a rigid material, and the roller body of the second pressure roller assembly is made of an elastic material.

[0014] A second aspect of this application provides a coating apparatus, including a coating roller mechanism as described in the first aspect above.

[0015] The technical solution provided in this application may include the following beneficial effects: The technical solution of this application, through the coordinated control of the lifting drive module and the pressure roller execution module, can optimize the contact stress during the coating roller pressing process, significantly extending the service life of the roller. Simultaneously, the coordinated control of the lifting drive module and the pressure application mechanism ensures that the pressing position automatically matches gravure rollers of different diameters, reducing equipment setup time and maintaining the process stability of coating thickness. During continuous production, this mechanism can maintain stable pressure output, avoiding coating quality fluctuations caused by wear of the second pressure roller assembly.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a perspective view of the coating roller mechanism shown in the embodiments of this application; Figure 2 This is a front view of the coating roller mechanism shown in the embodiments of this application; Figure 3 This is a schematic diagram of the coating roller pressing mechanism in its initial state, as shown in the embodiments of this application; Figure 4 This is a schematic diagram of the coating roller pressing mechanism in the coating state, as shown in the embodiments of this application; Figure 5 This is a schematic diagram of the coating roller pressing mechanism in the coating completed state, as shown in the embodiments of this application.

[0019] Figure label: 101. Drive source; 102. Motion conversion mechanism; 103. Frame; 104. Motor base; 105. First guide assembly; 106. Cylinder mounting base; 107. Second guide assembly; 108. First bearing part; 109. Pressing mechanism; 110. Second bearing part; 111. First pressure roller assembly; 112. Second pressure roller assembly; 113. Gravure roller. Detailed Implementation

[0020] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0021] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Defects in the pressure roller mechanisms of related technologies affect the consistency of lithium battery electrode coating quality and restrict the operating efficiency of the production line. To address these issues, this application provides a coating pressure roller mechanism and coating equipment that optimizes contact stress during the rolling process, significantly extending service life. Simultaneously, it can automatically match gravure rollers of different diameters, reducing equipment setup time and maintaining the process stability of coating thickness.

[0026] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0027] Figure 1 This is a perspective view of the coating roller mechanism shown in the embodiments of this application; Figure 2 This is a front view of the coating roller mechanism shown in the embodiments of this application.

[0028] See Figure 1 and Figure 2 This application provides a coating roller mechanism, including a lifting drive module and a roller execution module; the roller execution module includes a pressure application mechanism 109, a first roller assembly 111 and a second roller assembly 112, the first roller assembly 111 and the second roller assembly 112 are arranged side by side; wherein, the lifting drive module is connected to the roller execution module for driving the roller execution module to move along a preset direction; the output end of the pressure application mechanism 109 is connected to the first roller assembly 111 for driving the first roller assembly 111 to move to press or disengage from the second roller assembly 112.

[0029] In this embodiment, the first pressure roller assembly 111 and the second pressure roller assembly 112 are arranged side by side in the vertical direction with their axial directions along the horizontal direction. Two sets (A and B) of the lifting drive module, the pressure roller execution module, and the pressure application mechanism are provided respectively. The coating roller pressing mechanism of this application also includes two frames. The two sets of lifting drive modules, pressure roller execution modules, and pressure application mechanisms are symmetrically arranged and fixedly installed on the two frames. The two sets of lifting drive modules, pressure roller execution modules, and pressure application mechanisms are respectively located at the axial ends of the first pressure roller assembly 111 and the second pressure roller assembly 112, and are drively connected to the axial ends of the first pressure roller assembly 111 and the second pressure roller assembly 112 to drive the first pressure roller assembly 111 and the second pressure roller assembly 112 to move synchronously.

[0030] The lifting drive module refers to a power unit that provides vertical driving force. The lifting drive assembly includes a drive source and a motion conversion mechanism 102. The motion conversion mechanism 102 is connected between the drive source and the pressure roller execution module. The drive source drives the pressure roller execution module to lift and lower through the motion conversion mechanism 102. The motion conversion mechanism 102 is a mechanical component that converts the rotational motion of the drive source 101 of the lifting drive module into linear motion. Specifically, it can be a ball screw pair or a gear and rack mechanism, which is not limited in this application.

[0031] In some specific embodiments, the driving source includes a servo motor or a combination of a servo motor and a reducer. The servo motor and the reducer are fixed to the frame by a motor mount 104, and the output end of the reducer is connected to the power input end of the motion conversion mechanism 102.

[0032] Through the above technical solution, this application optimizes the contact stress of the second pressure roller assembly 112, significantly extending its service life. Simultaneously, the coordinated control of the lifting drive module and the pressure application mechanism 109 ensures that the pressing position automatically matches the gravure rollers 113 of different diameters, reducing equipment debugging time and maintaining the process stability of the coating thickness. During continuous production, this mechanism can maintain stable pressure output, avoiding coating quality fluctuations caused by wear of the second pressure roller assembly 112.

[0033] The pressure applying mechanism 109 of this application refers to a driving device that generates linear thrust, specifically a cylinder assembly. The cylinder body of the cylinder assembly is fixed to the cylinder mounting base 106, and the movable joint of the cylinder rod of the cylinder assembly is connected to the mounting base of the first pressure roller assembly 111, driving the first pressure roller assembly to move. The telescopic end of the cylinder assembly is directly connected to the mounting base of the first pressure roller assembly 111, and the contact separation control of the first pressure roller assembly 111 and the second pressure roller assembly 112 is realized through linear motion. After the pressure applying mechanism 109 drives the first pressure roller assembly 111 to press against the second pressure roller assembly 112, the lifting drive module drives the pressure roller execution module to move as a whole, so that the second pressure roller assembly 112 presses against the surface of the gravure roller. The lifting drive assembly includes a drive source and a motion conversion mechanism 102. The motion conversion mechanism 102 is connected between the drive source and the pressure roller execution module, and the drive source drives the pressure roller execution module to lift and lower through the motion conversion mechanism 102.

[0034] When a coating operation is required, the pressure applying mechanism 109 first pushes the first pressure roller assembly 111 towards the second pressure roller assembly 112 until the two are pressed together. At this time, the drive source in the lifting drive assembly is activated, and the motion conversion mechanism 102 drives the entire pressure roller execution module to move downward, so that the second pressure roller assembly 112 and the surface of the gravure roller form a pressed state with a preset pressure value. In this process, the motion conversion mechanism 102 converts the rotational motion of the drive source into linear lifting motion. For example, the ball screw pair converts the rotational torque of the servo motor into the vertical displacement of the nut, thereby precisely controlling the contact pressure between the second pressure roller assembly 112 and the gravure roller.

[0035] The coating roller mechanism of this application includes a gravure roller 113, which is arranged side by side with the second roller assembly 112 and is located on the side of the second roller assembly 112 away from the first roller assembly 111. The gravure roller 113 refers to a coating roller with a groove structure on its surface, and the groove depth can be designed according to the coating thickness requirements.

[0036] After the pressure applying mechanism 109 drives the first pressure roller assembly 111 to press against the second pressure roller assembly 112, the lifting drive module drives the pressure roller execution module to move as a whole, so that the second pressure roller assembly 112 presses against the surface of the gravure roller 113, so that the second pressure roller assembly 112 and the surface of the gravure roller 113 form a predetermined pressure, thereby making the second pressure roller assembly 112 evenly transfer the coating material to the surface of the substrate during the pressing process.

[0037] The diameter of the gravure roller 113 varies from 150mm to 360mm. When the diameter of the gravure roller 113 changes (e.g., from 150mm to 360mm), the lifting drive module automatically adjusts the height of the pressure roller execution module to maintain a constant contact pressure between the second pressure roller assembly 112 and the gravure roller 113. During this process, the first pressure roller assembly 111 always maintains a preload on the second pressure roller assembly 112 through the pressure application mechanism 109.

[0038] The existing technology relies solely on a single rubber roller to directly contact the gravure roller, leading to rapid wear in areas of stress concentration on the roller surface. This solution adds a first pressure roller assembly 111 to form an intermediate force transmission structure, allowing the pressing force of the first pressure roller assembly 111 to be evenly transmitted to the surface of the gravure roller 113 via the second pressure roller assembly 112, effectively dispersing the contact stress.

[0039] Figure 3 This is a schematic diagram of the coating roller pressing mechanism in its initial state, as shown in the embodiments of this application.

[0040] See Figure 3 In the initial state, the first pressure roller assembly 111 and the second pressure roller assembly 112 are in a separated state.

[0041] Figure 4 This is a schematic diagram of the coating roller pressing mechanism in the coating state, as shown in the embodiments of this application.

[0042] See Figure 4 In the coating state, it is necessary to adjust the pressing state of the first pressure roller assembly 111 and the second pressure roller assembly 112. The pressure applying mechanism 109 pushes the first pressure roller assembly 111 to move towards the second pressure roller assembly 112 until they are in full contact, forming a stable double-roller pressing structure.

[0043] When the first pressure roller assembly 111 is in a pressing state towards the second pressure roller assembly 112, the lifting drive module drives the entire pressure roller execution module to descend until the roller body of the second pressure roller assembly 112 contacts the gravure roller 113, thereby initiating coating production. Since the diameter of the gravure roller 113 varies between 150mm and 360mm, the motor of the lifting drive module drives the pressure roller execution module to automatically move up and down to adapt to the diameter variation of the gravure roller 113.

[0044] Figure 5This is a schematic diagram of the coating roller pressing mechanism in the coating completed state, as shown in the embodiments of this application.

[0045] See Figure 5 After coating is completed, the lifting drive module drives the pressure roller execution module to rise, the first pressure roller assembly 111 moves away from the second pressure roller assembly 112, and the coating pressure roller mechanism finally resets to the initial state.

[0046] In some embodiments, the hardness of the first pressure roller assembly 111 is greater than that of the second pressure roller assembly 112; or, the roller body of the first pressure roller assembly 111 is made of a rigid material, and the roller body of the second pressure roller assembly 112 is made of an elastic material. For example, the roller body of the first pressure roller assembly 111 can be made of a metal material with higher hardness, and the roller body of the second pressure roller assembly 112 can be made of a rubber material with lower hardness and elasticity. When there are small depressions on the surface of the gravure roller 113, the elastic material of the roller body of the second pressure roller assembly 112 can fill the depression area, thereby realizing the coating operation of the substrate, while the rigid structure of the roller body of the first pressure roller assembly 111 can prevent pressure attenuation caused by excessive deformation of the roller body of the second pressure roller assembly 112 or avoid wear of the second pressure roller assembly due to uneven force.

[0047] See also Figure 1 and Figure 2 Furthermore, the solution of this application also includes a linkage support module, which includes a first guide component 105 and a second guide component 107. The lifting drive module drives the pressure roller execution module to move through the first guide component 105; the pressure application mechanism 109 drives the first pressure roller assembly 111 to move through the second guide component 107.

[0048] The first guide component 105 refers to a linear motion mechanism used to constrain the motion trajectory of the pressure roller execution module. Specifically, it can be implemented using a linear guide rail and a slider structure. The rail can be fixed to the frame or support frame, and the slider connects to the pressure roller execution module to ensure vertical straightness during the lifting and lowering motion. The second guide component 107 refers to an auxiliary guide mechanism used to constrain the pressing trajectory of the first pressure roller assembly 111. Specifically, it can be implemented using a linear guide rail or a guide post / sleeve structure. The slider connects to the mounting base of the first pressure roller assembly 111, ensuring a precise linear motion path for the pressing action.

[0049] When the pressure roller execution module needs to be raised or lowered, the output force of the raising / lowering drive module is transmitted to the pressure roller execution module through the first guide component 105, causing it to move vertically downwards. When the pressing mechanism 109 is activated, its output end pushes the first pressure roller assembly 111 downwards through the second guide component 107, enabling it to precisely press against the second pressure roller assembly 112. When moving vertically upwards, it separates from the second pressure roller assembly 112. In this process, the first guide component 105 and the second guide component 107 respectively undertake the guiding functions of the raising / lowering drive and the pressing drive, preventing deviation or jamming during movement.

[0050] Specifically, the first guide component 105 can be a double-slider linear guide, and the second guide component 107 is a single-slider linear guide. The slide rail of the double-slider linear guide is fixed to the frame, and a cylinder mounting seat 106 and a second roller pressing component slide mounting seat are installed on its slider. The nut of the ball screw mechanism is fixed to the cylinder mounting seat 106, so that when the ball screw rotates, it drives the cylinder mounting seat 106 to rise and fall along the double-slider linear guide. The slide rail of the second guide component 107 is fixed on the second roller pressing component slide mounting seat, and its slider is connected to the first roller pressing component mounting seat. During operation, the servo motor drives the ball screw to rotate through the reducer, and the nut of the ball screw drives the cylinder mounting seat 106 to rise and fall vertically along the double-slider guide, thereby adjusting the overall height of the pressure roller execution module. When the cylinder rod extends, it pushes the first pressure roller assembly 111 to move along the guide rail of the second guide component, so that it presses against the second pressure roller assembly 112; when the cylinder rod retracts, the first pressure roller assembly disengages from the second pressure roller assembly 112.

[0051] Through the above technical solutions, this application achieves precise positioning of the pressure roller lifting and lowering through servo drive; at the same time, through the cooperative design of rigid pressure roller and double guide rail, the local stress concentration of the rubber roller is reduced, and its service life is extended; the controllable pressure of the cylinder assembly further optimizes the stability of the pressing process and reduces coating defects caused by pressure fluctuations.

[0052] This solution, by independently setting two sets of guide components, not only ensures the stability of the overall lifting and lowering, but also achieves precise positioning of the pressing action, realizes independent control of the lifting and pressing actions, shortens the machine adjustment time when switching between different gravure rollers, and improves the consistency of coating thickness.

[0053] See also Figure 1 and Figure 2Furthermore, the linkage support module includes a first support portion 108 and a second support portion 110, which are respectively fixed to the first slider and the second slider of the first guide assembly 105. The first support portion 108 refers to the support structure installed on the first slider of the first guide assembly 105, which can be implemented using a metal plate or a reinforcing bracket, and is used to support the fixed end of the pressure applying mechanism 109, ensuring a rigid connection between the pressure applying mechanism 109 and the guide assembly. The second support portion 110 refers to another support structure installed on the second slider of the first guide assembly 105, which can be fixed to the second slider by bolts or welding, and is used to fix the track of the second guide assembly 107 and the mounting base of the second pressure roller assembly 112, thereby uniformly transferring the load of the second pressure roller assembly 112 to the guide assembly.

[0054] The fixed connection between the first bearing part 108 and the first slider allows the fixed end of the pressure applying mechanism 109 to move synchronously with the first slider, while the fixed connection between the second bearing part 110 and the second slider provides a stable mounting base for the second pressure roller assembly 112. When the lifting drive module drives the pressure roller execution module to move downward, the first slider and the second slider move downward synchronously, ensuring that the first bearing part 108 and the second bearing part 110 are always in the same plane of motion, thereby ensuring that the pressing action of the first pressure roller assembly 111 and the second pressure roller assembly 112 remains parallel. In some embodiments, the fixed seat of the pressure applying mechanism 109 is mounted on the first bearing portion 108, the track of the second guide assembly 107 and the mounting base of the second pressure roller assembly 112 are fixedly connected to the second bearing portion 110, and the mounting base of the first pressure roller assembly 111 is fixed on the third slider of the second guide assembly 107.

[0055] Specifically, the pressure applying mechanism 109 is rigidly connected to the first bearing portion 108 via a fixed base. The track of the second guide assembly is fixed on the second bearing portion 110 to form a reference guide surface. The mounting base of the second pressure roller assembly 112 is directly fixed to the second bearing portion 110 to form a stable support. When the pressure applying mechanism 109 drives the first pressure roller assembly 111, the third slider moves linearly along the track of the second guide assembly 107, keeping the contact pressure between the first pressure roller assembly 111 and the second pressure roller assembly 112 in the vertical direction.

[0056] In some embodiments, the track of the first guide component 105 is fixed to the frame 103. The frame 103 refers to the main frame structure that supports and fixes the first guide component 105. Specifically, it can be implemented using a truss structure spliced ​​from rectangular steel pipes or aluminum alloy profiles. Its function is to ensure the flatness of the track installation plane through rigid connection.

[0057] By directly fixing the track of the first guide assembly 105 to the frame 103, the driving force output by the lifting drive module can be evenly transmitted to the pressure roller execution module through the frame 103. In this process, the rigid connection between the track and the frame 103 eliminates assembly errors that may occur with traditional split-type installations, thus ensuring that the pressure roller execution module maintains linear motion in the preset direction during lifting. For example, when the lifting drive module drives the pressure roller execution module through a ball screw, the fixing effect of the frame 103 on the track effectively resists the lateral torque generated by the screw drive, preventing deformation or displacement of the guide rail due to uneven force.

[0058] In some embodiments, the pressure applying mechanism 109 includes a fixed end and a telescopic end. The fixed end is mounted on the first bearing portion 108, and the telescopic end is connected to the mounting base of the first pressure roller assembly 111. The fixed end refers to the part of the pressure applying mechanism 109 that is rigidly connected to the bearing structure. Specifically, it can be fixed to the first bearing portion 108 by bolts or welding, and its function is to provide a stable support foundation for the pressure applying mechanism 109. The telescopic end refers to the output component of the pressure applying mechanism 109 that can move in a linear direction. Specifically, it can be implemented using a cylinder, hydraulic cylinder, or electric push rod, driving the first pressure roller assembly 111 to generate displacement through telescopic movement. The mounting base refers to the support platform used to fix the first pressure roller assembly 111. Specifically, it can be a metal frame with positioning holes and locking grooves, which, after being connected to the telescopic end, can transmit the driving force to the pressure roller assembly.

[0059] In some embodiments, the fixed end of the pressure applying mechanism 109 can be bolted to the first support portion 108, which is connected to the lifting drive module via the slider of the first guide assembly 105, allowing the pressure applying mechanism 109 to rise and fall as a whole with the pressure roller execution module. The cylinder rod end of the telescopic end is hinged to the mounting base of the first pressure roller assembly 111 via a movable joint. When the cylinder is activated, the telescopic end pushes the mounting base to move along the track of the second guide assembly 107, thereby realizing the pressing or disengaging action of the first pressure roller assembly 111 towards the second pressure roller assembly 112. During this process, the second guide assembly 107 constrains the movement trajectory of the first pressure roller assembly 111, preventing deviation caused by lateral forces. When it is necessary to adjust the pressure roller gap, the lifting drive module drives the pressure roller execution module to rise and fall as a whole, while the pressure applying mechanism 109 independently controls the pressing state of the first pressure roller assembly 111, and the two work together to achieve multi-level pressure adjustment.

[0060] Through the above technical solution, this application achieves precise control of the movement trajectory of the first pressure roller assembly 111, effectively reducing local wear caused by uneven force on the rubber roller and extending its service life. Simultaneously, the coordinated action of the pressure applying mechanism 109 and the lifting drive module improves the automation of the pressure roller gap adjustment process, reduces manual intervention, and ensures the uniformity of the coating thickness.

[0061] This application further proposes a stroke limit unit, which is disposed at the lifting path of the pressure roller execution module. The signal output terminal of the stroke limit unit is communicatively connected to the control system of the lifting drive module to control the lifting stroke position of the pressure roller execution module.

[0062] The travel limit unit is a device used to restrict the movement range of mechanical moving parts. It can be implemented using photoelectric sensors, proximity switches, or mechanical stops. It detects the position signal of the pressure roller actuator and feeds it back to the control system, achieving closed-loop control of the movement stroke. The lifting path refers to the trajectory range of the pressure roller actuator in the vertical direction, which can be determined by the installation position of the guide rails or guide columns, ensuring that the travel limit unit accurately covers the movement range of the pressure roller actuator. The signal output terminal communicates with the control system, meaning that the travel limit unit transmits the detection signal to the controller of the drive mechanism via electrical wiring or wireless transmission, enabling the controller to receive position information in real time and adjust the drive action accordingly.

[0063] In some embodiments, the stroke limit unit can be installed at the end of the lifting path of the pressure roller execution module, for example, by arranging photoelectric sensors at the upper and lower limit points of the guide rail. When the pressure roller execution module moves to the preset position under the drive of the lifting drive module, the photoelectric sensor is triggered and generates an electrical signal. This signal is transmitted to the control unit of the servo motor through a cable, and the control unit immediately stops the motor, causing the pressure roller execution module to stop at the target height. This configuration solves the problems of insufficient positioning accuracy and low efficiency caused by manual adjustment of the coating pressure roller mechanism in related technologies. Through the synergistic effect of the stroke limit unit and the drive control system, precise control of the lifting stroke of the pressure roller is achieved, ensuring stable pressing pressure during the coating process, thereby improving the uniformity of coating thickness and production continuity.

[0064] This application also provides a coating apparatus, which includes a coating roller mechanism as described in the above embodiments. The coating apparatus is used to uniformly and continuously coat electrode slurry onto the surface of a metal current collector, forming an electrode coating with a specific thickness, width, and shape. The coating apparatus includes a slurry supply and conveying mechanism for stably conveying the prepared electrode slurry to the coating mechanism, ensuring continuous supply and controllable flow rate. The coating roller mechanism uniformly coats the slurry onto the continuously operating current collector surface, forming a preset coating. Because the coating apparatus of this application includes the coating roller mechanism of the above embodiments, the service life of the roller is significantly extended. It also reduces equipment setup time and maintains the process stability of the coating thickness. During continuous production, it can maintain stable pressure output, avoiding fluctuations in coating quality.

[0065] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A coating roller mechanism, characterized in that, include: Lifting drive module; The pressure roller execution module includes a pressure application mechanism, a first pressure roller assembly, and a second pressure roller assembly, wherein the first pressure roller assembly and the second pressure roller assembly are arranged side by side. The lifting drive module is connected to the pressure roller execution module and is used to drive the pressure roller execution module to move in a preset direction; the output end of the pressure applying mechanism is connected to the first pressure roller assembly and is used to drive the first pressure roller assembly to move to press or disengage from the second pressure roller assembly.

2. The coating roller mechanism according to claim 1, characterized in that: It also includes a linkage support module, which includes a first guide component and a second guide component. The lifting drive module drives the pressure roller execution module to move through the first guide component; the pressure applying mechanism drives the first pressure roller component to move through the second guide component.

3. The coating roller mechanism according to claim 2, characterized in that: The linkage support module includes a first bearing part and a second bearing part, which are respectively fixed to the first slider and the second slider of the first guide component.

4. The coating roller mechanism according to claim 3, characterized in that: The fixed seat of the pressure applying mechanism is installed on the first bearing part, the track of the second guide component and the mounting base of the second pressure roller component are fixedly connected to the second bearing part, and the mounting base of the first pressure roller component is fixed on the third slider of the second guide component.

5. The coating roller mechanism according to claim 2, characterized in that: It also includes a frame, to which the track of the first guide assembly is fixed.

6. The coating roller mechanism according to claim 4, characterized in that: The pressure-applying mechanism includes a fixed end and a telescopic end. The fixed end is installed on the first bearing part, and the telescopic end is connected to the mounting base of the first pressure roller assembly.

7. The coating roller mechanism according to claim 1, characterized in that: It also includes a stroke limit unit, which is located at the lifting path of the pressure roller actuator module. The signal output terminal of the stroke limit unit is communicatively connected to the control system of the lifting drive module and is used to control the lifting stroke position of the pressure roller actuator module.

8. The coating roller mechanism according to claim 1, characterized in that: It also includes a gravure roller, which is arranged side by side with the second pressure roller assembly and located on the side of the second pressure roller assembly away from the first pressure roller assembly; the lifting drive module drives the pressure roller execution module to move as a whole, so that the second pressure roller assembly presses against the surface of the gravure roller; The diameter of the gravure roller varies from 150mm to 360mm.

9. The coating roller mechanism according to any one of claims 1-8, characterized in that: The hardness of the first pressure roller assembly is greater than that of the second pressure roller assembly; or, the roller body of the first pressure roller assembly is made of a rigid material, and the roller body of the second pressure roller assembly is made of an elastic material.

10. A coating apparatus, characterized in that, Includes the coating roller mechanism as described in any one of claims 1-9.

Images