Pinch roll mechanism and coating equipment

Abstract

The utility model relates to the technical field of battery manufacturing, and provides a clamping roller mechanism and coating equipment. The clamping roller mechanism comprises a main roller and a clamping roller, the clamping roller comprises a roller shaft and a plurality of roller sleeves, the multiple roller sleeves are arranged on the peripheral side of the roller shaft at intervals in the length direction of the roller shaft, and the multiple roller sleeves are used for being matched with the main roller to fix the pole pieces; and the multiple pressure sensors are correspondingly arranged in the multiple roller sleeves and used for detecting the pressure borne by the multiple roller sleeves. By means of the technical scheme, the balance of stress distribution between the clamping roller and the pole piece can be detected, the tightness degree between the clamping roller and the pole piece can be conveniently adjusted in time, and the production efficiency and the production quality of the pole piece are improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, specifically to a clamping roller mechanism and coating equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Currently, in battery production, the coating process is a crucial step in electrode manufacturing. The stability of the tension operation of the traction mechanism in the coating equipment directly determines the overall stability of the equipment. The clamping roller is the core component; its function is to work in conjunction with the main roller to control the separation and contact between the tension-isolating roller and the active traction roller, preventing abnormal equipment operation or electrode slippage. Therefore, how to monitor the pressure distribution between the clamping roller and the electrode in real time to improve the stability of equipment operation has become a problem that needs to be solved. Utility Model Content

[0004] The purpose of this application is to provide a clamping roller mechanism and coating equipment to achieve real-time monitoring of the pressure distribution between the clamping roller and the electrode sheet, thereby improving the operational stability of the coating equipment. This objective is achieved through the following technical solution:

[0005] In a first aspect, this application provides a clamping roller mechanism, comprising: a main roller; a clamping roller, including a roller shaft and a plurality of roller sleeves, wherein the plurality of roller sleeves are spaced apart along the length direction of the roller shaft on the outer periphery of the roller shaft, and the plurality of roller sleeves are used to cooperate with the main roller to fix the electrode sheet; and a plurality of pressure sensors, wherein the plurality of pressure sensors are correspondingly disposed in the plurality of roller sleeves for detecting the pressure on the plurality of roller sleeves.

[0006] According to the clamping roller mechanism provided in this application, the clamping roller is arranged opposite to the main roller and is used to transfer the electrode sheet in the middle. Multiple roller sleeves are sleeved on the outer circumference of the roller shaft. The multiple roller sleeves are used to cooperate with the main roller to fix the electrode sheet. By setting pressure sensors in each of the multiple roller sleeves, the pressure on the multiple roller sleeves is detected by the multiple pressure sensors respectively, so as to detect the pressure distribution between the clamping roller and the electrode sheet in real time. This can determine whether the tightness between the opposite sides of the clamping roller and the electrode sheet is consistent. It is convenient to adjust the tightness between the clamping roller and the electrode sheet in time when the pressure distribution is uneven, thereby improving the stability of the coating equipment operation, reducing the risk of electrode sheet being pinched, wrinkled or slipped due to improper clamping roller installation, and thus helping to improve the production quality and production efficiency of the electrode sheet.

[0007] In addition, the clamping roller mechanism provided in this application may also have the following additional technical features:

[0008] In some embodiments of this application, the roller sleeve includes a flexible roller sleeve, and the pressure sensor is built into the flexible roller sleeve.

[0009] In the above technical solution, the flexible roller sleeve has good flexibility, long service life, and is easy to process and form, making it suitable for mass production. It also allows for the integration of pressure sensors into the flexible roller sleeve during production, enabling real-time detection of the force distribution between the electrode sheet and the clamping roller through the pressure sensor.

[0010] In some embodiments of this application, the roller shaft has a hollow layer inside, and the roller clamping mechanism further includes a pressure collector, which is disposed in the hollow layer and electrically connected to a plurality of pressure sensors for collecting detection data from the plurality of pressure sensors.

[0011] In the above technical solution, a hollow layer can be formed inside the roller by milling out a portion of the structure, which facilitates the installation of the pressure sensor and improves the installation efficiency of the product. The pressure sensor is set inside the hollow layer, which can fix and protect the pressure sensor. The pressure sensor can collect pressure values ​​from multiple pressure sensors through a data cable, and the pressure magnitude, pressure time, and pressure location of multiple pressure sensors can be obtained through a simple calibration function.

[0012] In some embodiments of this application, the clamping roller mechanism further includes a display that is electrically connected to the pressure sensor.

[0013] In the above technical solution, by electrically connecting the pressure acquisition device to the display, the relevant data such as the pressure magnitude, pressure time and pressure position of multiple pressure sensors are transmitted to the display for display, which makes it convenient for operators to observe and adjust the tightness between the clamping roller and the electrode in a timely manner.

[0014] In some embodiments of this application, the clamping roller mechanism further includes an adjustment component, which includes a first driving member and a second driving member. The first driving member and the second driving member are respectively connected to both ends of the roller shaft and are used to adjust the tightness of the clamping roller.

[0015] In the above technical solution, when the pressure distribution between the clamping roller and the electrode is uneven, the interference between one side of the clamping roller and the electrode is large. The distance between the radial direction of the clamping roller and the electrode can be adjusted by the first and second driving components on both sides of the clamping roller to adjust the tightness between the clamping roller and the electrode on both sides until the force distribution of multiple roller sleeves is consistent. This can reduce the wear of the roller sleeves of the clamping roller, improve the service life of the clamping roller, and reduce the risk of the electrode being pinched, wrinkled or slipped.

[0016] In some embodiments of this application, the clamping roller mechanism further includes a controller, and the pressure sensor and the adjusting component are electrically connected to the controller.

[0017] In the above technical solution, the pressure acquisition device and the regulating component are electrically connected to the controller, such as by wire connection or wireless communication connection, so that the controller can automatically control the regulating component to adjust the tightness between the clamping roller and the electrode plate according to the pressure data of multiple pressure sensors collected by the pressure acquisition device, thereby improving the automation level of the product.

[0018] In some embodiments of this application, the roller shaft includes at least two spliced ​​roller bodies, which are spliced ​​together to form the roller shaft.

[0019] In the above technical solution, the roller shaft includes at least two spliced ​​roller bodies, which are assembled and fixed by splicing connection, thereby facilitating the installation and disassembly of internal components such as pressure sensors.

[0020] In some embodiments of this application, one of two adjacent splicing rollers is provided with a first positioning hole and the other is provided with a second positioning hole, wherein the first positioning hole is configured to correspond to the position of the second positioning hole when the clamping rollers are spliced ​​together.

[0021] In the above technical solution, the roller shaft is formed by splicing two semi-circular splicing roller bodies. By setting a first positioning hole in one of the two splicing roller bodies and a second positioning hole in the other, it is convenient to judge whether the roller shaft is assembled in place based on the relative position of the first positioning hole and the second positioning hole, which helps to improve the accuracy and efficiency of the roller shaft assembly connection.

[0022] In some embodiments of this application, the pressure sensor includes a thin-film pressure sensor.

[0023] In the above technical solution, the thin-film pressure sensor, due to its thinness and flexibility, is easy to integrate into the rubber roller sleeve. Furthermore, the thin-film pressure sensor possesses good creep resistance and strong anti-interference capabilities, which helps improve the accuracy of pressure detection. Specifically, the working principle of the thin-film pressure sensor is based on the change in resistance of the thin-film material under stress. A thin-film sensor typically includes a thin film, a conductive layer, and a supporting base. When the roller sleeve contacts the electrode and is compressed, the thin film undergoes a slight deformation, causing a change in the resistance of the conductive layer. This change in resistance can be converted into a voltage or digital signal output through a signal processing circuit, thereby allowing the measurement of the pressure.

[0024] Secondly, this application provides a coating apparatus, including a clamping roller mechanism as described in any one of the embodiments of the first aspect.

[0025] The coating equipment provided in this application includes the clamping roller mechanism described in any one of the first aspects of the embodiments, and therefore has the technical effects described in any of the above embodiments, which will not be repeated here. Attached Figure Description

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the clamping roller mechanism provided in some embodiments of this application;

[0028] Figure 2 This is a cross-sectional structural schematic diagram of a clamping roller mechanism provided in some embodiments of this application.

[0029] The attached figures are labeled as follows:

[0030] 10. Clamping roller mechanism;

[0031] 11. Roller shaft; 111. Spliced ​​roller body; 112. First positioning hole; 12. Roller sleeve; 13. Pressure sensor; 14. Pressure acquisition device; 15. Controller; 161. First driving component; 162. Second driving component; 17. Display. Detailed Implementation

[0032] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0034] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0038] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 embodiments of this application.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0040] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0041] In the battery manufacturing process, the anode and cathode electrodes are produced during the coating process, mainly through several steps: gravure unwinding, single-sided coating, single-sided baking, double-sided coating, double-sided baking, and rewinding. The stability of the tension operation of the traction mechanism in the coating equipment directly determines the overall stability of the equipment. The clamping roller is the core component; its function is to work in conjunction with the main roller to control the separation and contact between the tension isolation roller and the active traction roller, thereby reducing the risk of abnormal equipment operation or electrode slippage. Therefore, how to monitor the pressure distribution between the clamping roller and the electrode in real time to improve the stability of equipment operation becomes a problem that needs to be solved.

[0042] To address the need for real-time monitoring of the pressure distribution between the clamping roller and the electrode sheet during coating equipment operation, this application presents a clamping roller mechanism. The mechanism includes a main roller and clamping rollers. The clamping rollers cooperate with the main roller to fix the electrode sheet. Each clamping roller includes a roller shaft and multiple roller sleeves fitted around the outer periphery of the roller shaft. These roller sleeves are spaced apart along the length of the roller shaft. Each roller sleeve contains a pressure sensor. These pressure sensors can detect the pressure exerted on the roller sleeves when they contact the electrode sheet in real time. Based on the measurements from the multiple pressure sensors, the balance of the pressure distribution between the clamping roller and the electrode sheet can be determined. This allows for timely adjustment of the clamping roller's installation position in cases of uneven pressure distribution, reducing the risk of electrode sheet damage, slippage, or jamming. Ultimately, this contributes to improving the stability of the coating equipment operation and enhancing the production quality of the electrode sheet.

[0043] The clamping roller mechanism disclosed in this application includes, but is not limited to, applications in battery manufacturing processes. For example, it can be used in different process equipment such as coating equipment, cold pressing equipment, die-cutting equipment, and winding equipment.

[0044] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the clamping roller mechanism provided in some embodiments of this application; Figure 2 This is a cross-sectional structural schematic diagram of a clamping roller mechanism provided in some embodiments of this application. Embodiments of this application provide a clamping roller mechanism 10, including a main roller, a clamping roller, and multiple pressure sensors. The clamping roller includes a roller shaft 11 and multiple roller sleeves 12. The multiple roller sleeves 12 are spaced apart along the length of the roller shaft 11 and fitted onto the outer periphery of the roller shaft 11. The multiple roller sleeves 12 are used to cooperate with the main roller to fix the electrode sheet; wherein, each roller sleeve 12 is provided with a pressure sensor 13, and the pressure sensor 13 is used to detect the pressure on the multiple roller sleeves 12.

[0045] For example, the main roller and the clamping roller 10 are arranged opposite each other, and the main roller and the clamping roller 10 are used to transfer the electrode sheet.

[0046] For example, roller 11 is a metal roller, such as an iron roller, a stainless steel roller, etc.

[0047] For example, the roller sleeve 12 can be a rubber roller, silicone roller or plastic roller, etc., and the number of roller sleeves 12 is not less than two.

[0048] The pressure sensor 13 is arranged along the circumference of the roller sleeve 12. The pressure sensor 13 can be arranged inside the roller sleeve 12 or on the side of the roller sleeve 12 facing the roller shaft 11.

[0049] The clamping roller mechanism 10 provided in this application embodiment has multiple roller sleeves 12 sleeved around the outer periphery of the roller shaft 11. The multiple roller sleeves 12 are used to fix the electrode sheet in cooperation with the main roller. By setting pressure sensors 13 in each of the multiple roller sleeves 12, the pressure on the multiple roller sleeves 12 is detected by the multiple pressure sensors 13 respectively, so as to detect the pressure distribution between the clamping roller and the electrode sheet in real time. This can determine whether the tightness between the opposite sides of the clamping roller and the electrode sheet is consistent, so as to adjust the tightness between the clamping roller and the electrode sheet in time when the pressure distribution is uneven. This improves the stability of the coating equipment operation, reduces the risk of the electrode sheet being pinched, wrinkled or slipped due to improper installation of the clamping roller, and thus helps to improve the production quality and production efficiency of the electrode sheet.

[0050] See Figure 2 According to some embodiments of this application, the roller sleeve 12 includes a flexible roller sleeve 12, and the pressure sensor 13 is built into the flexible roller sleeve 12.

[0051] As an example, the flexible roller sleeve 12 is a rubber roller sleeve. The rubber roller sleeve 12 has good wear resistance, long service life, and is easy to process and mold, making it suitable for mass production. It also makes it easy to embed the pressure sensor 13 inside the rubber roller sleeve 12 during production, so that the force distribution between the electrode and the clamping roller can be detected in real time through the pressure sensor 13.

[0052] See Figure 2 According to some embodiments of this application, the roller 11 has a hollow layer inside, and the roller clamping mechanism 10 also includes a pressure collector 14. The pressure collector 14 is disposed in the hollow layer and is electrically connected to multiple pressure sensors 13 for collecting the detection data of multiple pressure sensors 13.

[0053] For example, the roller 11 has a certain thickness in the radial direction, and the hollow layer is a hollow structure set inside the roller 11. The hollow structure has an opening, and the pressure collector 14 is installed in the hollow structure through the opening and can be sealed by a sealing member.

[0054] The roller 11 has a hollow layer inside to facilitate the installation of the pressure sensor 14 and improve the installation efficiency of the product. The pressure sensor 14 is located inside the hollow layer, which provides fixation and protection for the pressure sensor 14. The pressure sensor 14 can be electrically connected to multiple pressure sensors 13 via data cable or wireless communication to collect the pressure values ​​of multiple pressure sensors 13. The pressure magnitude, pressure duration, and pressure location of multiple pressure sensors 13 can be obtained through a simple calibration function.

[0055] According to some embodiments of this application, the clamping roller mechanism 10 also includes a display 17, which is electrically connected to the pressure collector 14.

[0056] For example, display 17 can be a computer screen.

[0057] By electrically connecting the pressure acquisition unit 14 to the display 17, the pressure magnitude, pressure time, pressure position, and other relevant data of multiple pressure sensors 13 are transmitted to the display 17 for display, which makes it convenient for operators to observe and adjust the tightness between the clamping roller and the electrode in a timely manner.

[0058] See Figure 1 According to some embodiments of this application, the clamping roller mechanism 10 further includes an adjustment component, which includes a first driving member 161 and a second driving member 162. The first driving member 161 and the second driving member 162 are respectively connected to both ends of the roller shaft 11 for adjusting the tightness of the clamping roller.

[0059] For example, both the first drive member 161 and the second drive member 162 can be drive motors, used to adjust the distance between the clamping roller and the electrode sheet in the radial direction.

[0060] When the pressure distribution between the clamping roller and the electrode is uneven, the interference between one side of the clamping roller and the electrode is greater. The distance between the clamping roller and the electrode can be adjusted by the first drive member 161 and the second drive member 162 on both sides of the clamping roller to adjust the tightness between the clamping roller and the electrode on both sides until the force distribution of the multiple roller sleeves 12 is consistent. This can reduce the wear of the roller sleeves 12 of the clamping roller, improve the service life of the clamping roller, and reduce the risk of the electrode being pinched, wrinkled or slipped.

[0061] See Figure 2 According to some embodiments of this application, the clamping roller mechanism 10 further includes a controller 15, a pressure collector 14, and an adjustment assembly, which are electrically connected to the controller 15.

[0062] For example, the controller 15 can be a programmable controller. The controller 15 has a pressure analysis module that can generate a pressure cloud map or pressure gauge after receiving multiple pressure data, and then display it through the display 17.

[0063] The controller 15 is electrically connected to the pressure acquisition unit 14 and the adjustment component, thereby automatically controlling the adjustment component to adjust the tightness between the clamping roller and the electrode sheet based on the pressure data collected by the pressure acquisition unit 14 from multiple pressure sensors 13, thus improving the automation level of the product.

[0064] According to some embodiments of this application, the roller shaft 11 includes at least two spliced ​​roller bodies 111, which are spliced ​​together to form the roller shaft 11.

[0065] For example, at least two splicing rollers 111 are spliced ​​together by welding or by fastening the two splicing rollers 111 together after they are butted together.

[0066] The roller 11 includes at least two spliced ​​roller bodies 111, which are assembled and fixed by splicing connection, thereby facilitating the installation and disassembly of internal components such as pressure sensor 13.

[0067] According to some embodiments of this application, one of two adjacent splicing roller bodies 111 is provided with a first positioning hole 112 and the other is provided with a second positioning hole. The first positioning hole 112 is configured to correspond to the position of the second positioning hole when the clamping rollers are spliced ​​and formed.

[0068] For example, there are two splicing roller bodies 111, that is, the roller shaft 11 is formed by splicing and connecting two semi-circular splicing roller bodies 111. By setting a first positioning hole 112 in one of the two splicing roller bodies 111 and a second positioning hole in the other, it is convenient to judge whether the assembly of the roller shaft 11 is in place according to the relative position of the first positioning hole 112 and the second positioning hole, which helps to improve the accuracy and efficiency of the assembly and connection of the roller shaft 11.

[0069] According to some embodiments of this application, pressure sensor 13 includes a thin-film pressure sensor.

[0070] Thin-film pressure sensors, due to their thinness and flexibility, are easily integrated into the rubber roller sleeve 12. Furthermore, they possess good creep resistance and strong anti-interference capabilities, contributing to improved pressure detection accuracy. Specifically, the working principle of a thin-film pressure sensor is based on the change in resistance of the thin-film material under stress. A thin-film sensor typically comprises a thin film, a conductive layer, and a supporting base. When the roller sleeve 12 contacts the electrode and is compressed, the thin film undergoes a slight deformation, causing a change in the resistance of the conductive layer. This change in resistance is converted into a voltage or digital signal output by a signal processing circuit, thereby allowing the measurement of the pressure.

[0071] According to some embodiments of this application, see Figure 1 and Figure 2 This application provides a clamping roller mechanism 10, including a main roller, a clamping roller 10, multiple pressure sensors 13, a pressure acquisition device 14, a display 17, an adjustment assembly, and a controller 15. The clamping roller 10 includes a roller shaft 11 and multiple roller sleeves 12. The multiple roller sleeves 12 are spaced apart along the length of the roller shaft 11 on its outer periphery. Each roller sleeve 12 contains a pressure sensor 13, which measures the pressure on the roller sleeves 12. The roller shaft 11 has a hollow layer inside, and the pressure acquisition device 14 is located within this hollow layer and electrically connected to the display 17 and the multiple pressure sensors 13. It collects the pressure data measured by the multiple pressure sensors 13 and transmits it to the display 17, which displays the pressure data collected by the pressure acquisition device 14. The adjustment assembly includes a first drive component 161 and a second drive component 162 respectively connected to both sides of the clamping roller along its length. A controller 15 is electrically connected to a pressure acquisition unit 14, the first drive component 161, and the second drive component 162, and is used to control the first drive component 161 and the second drive component 162 to adjust the tightness between the clamping roller and the electrode sheet based on multiple pressure data collected by the pressure acquisition unit 14. This technical solution reduces the risk of electrode sheet damage, wrinkling, or slippage due to improper clamping roller installation, thus improving the stability of the coating equipment operation and increasing electrode sheet production efficiency and quality.

[0072] According to some embodiments of this application, this application also provides a coating apparatus, including the clamping roller mechanism 10 as described in any of the above embodiments.

[0073] The coating equipment provided in this application includes the clamping roller mechanism 10 as described in any one of the first aspect embodiments, and therefore has the technical effects described in any of the above embodiments, which will not be repeated here.

[0074] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pinch roll mechanism characterized by, The application relates to a clamp roller mechanism. The clamp roller mechanism comprises a main roller, a clamp roller, a plurality of pressure sensors, and a plurality of roller sleeves. The clamp roller comprises a roller shaft and a plurality of roller sleeves. The plurality of roller sleeves are arranged on the outer periphery of the roller shaft along the length direction of the roller shaft.

2. The pinch roll mechanism of claim 1, wherein, The plurality of roller sleeves are used for cooperating with the main roller to fix a pole piece.

3. The pinch roll mechanism of claim 1, wherein, The plurality of pressure sensors are arranged in the plurality of roller sleeves.

4. The pinch roll mechanism of claim 3, wherein, The roller sleeves comprise flexible roller sleeves.

5. The pinch roll mechanism of claim 3, wherein, The pressure sensors are arranged in the flexible roller sleeves.

6. The pinch roll mechanism of claim 5, wherein, The roller shaft is internally provided with a hollow layer.

7. The pinch roll mechanism according to any one of claims 1 to 6, characterized in that, The clamp roller mechanism further comprises a pressure collector arranged in the hollow layer and electrically connected with the plurality of pressure sensors.

8. The pinch roll mechanism of claim 7, wherein, The pressure collector is used for collecting detection data of the plurality of pressure sensors.

9. The pinch roll mechanism of claim 8, wherein, The clamp roller mechanism further comprises a display electrically connected with the pressure collector.

10. A coating apparatus characterized by comprising: The clamp roller mechanism further comprises an adjusting assembly. The adjusting assembly comprises a first driving member and a second driving member. The first driving member and the second driving member are respectively connected with two ends of the roller shaft. The first driving member and the second driving member are used for adjusting the tightness of the clamp roller. The clamp roller mechanism further comprises a controller. The pressure collector and the adjusting assembly are respectively electrically connected with the controller. The roller shaft comprises at least two spliced roller bodies. The at least two spliced roller bodies are spliced and connected to form the roller shaft. One of the adjacent two spliced roller bodies is provided with a first positioning hole. The other one is provided with a second positioning hole. The first positioning hole is configured to correspond to the position of the second positioning hole when the roller shaft is spliced and formed. The pressure sensor comprises a thin film pressure sensor. The clamp roller mechanism comprises any one of claims 1-9. The clamp roller mechanism comprises any one of claims 1-9.

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