A roundness measuring device for a coating roll and a pole piece slurry coating apparatus

Abstract

The utility model provides a kind of for coating roller's round jump measurement device and pole piece slurry coating equipment, for coating roller's round jump measurement device includes measuring instrument, first adjusting assembly and second adjusting assembly;Measuring instrument and first adjusting assembly fixed connection;First adjusting assembly and second adjusting assembly fixed connection;First adjusting assembly includes Z axis adjusting mechanism, Y axis adjusting mechanism and first connecting piece;Y axis adjusting mechanism and first connecting piece fixed connection, Z axis adjusting mechanism and first connecting piece fixed connection.The connection of first adjusting assembly and second adjusting assembly can be accurately adjusted to the position of measuring instrument in multiple dimensions, so that the probe of measuring instrument can be accurately positioned to the measurement position of coating roller, and the probe can be adjusted to perpendicular or other suitable angle with the surface of coating roller according to the actual situation and measurement requirement of coating roller, so as to realize the accurate measurement of coating roller round jump.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology, specifically relating to a circular runout measuring device for coating rollers and an electrode slurry coating equipment. Background Technology

[0002] In the field of lithium battery manufacturing, the roundness accuracy of the coating roller is a core factor affecting the consistency of coating density and plays a decisive role in the performance of lithium batteries. Good coating density consistency can ensure uniform ion transport during battery charging and discharging, thereby improving the battery's energy density, cycle life, and safety. Once the coating density deviates, it will directly lead to uneven chemical reactions inside the battery, causing safety hazards such as capacity decay and thermal runaway.

[0003] Currently, the measurement of coating roller circular runout accuracy relies on manual measurement using a dial indicator base. This method not only suffers from inaccurate positioning due to the subjectivity and limitations of manual operation, resulting in poor measurement accuracy and difficulty in accurately obtaining true data on the coating roller's circular runout; but also requires repositioning when changing testing points, consuming significant time and manpower, severely impacting measurement efficiency. These combined problems make it difficult to quickly and accurately monitor and adjust the coating roller's circular runout, failing to meet the demands of high-efficiency, high-precision lithium battery production and hindering the high-quality development of the lithium battery manufacturing industry. Utility Model Content

[0004] This utility model provides a device for measuring the circular runout of a coating roller, in order to solve the problem of low measurement efficiency of the circular runout accuracy of coating rollers.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows: In a first aspect, embodiments of this application provide a circularity measuring device for a coating roller. The device has a first direction, a second direction, and a third direction, all of which are perpendicular to each other. The device includes a measuring instrument, a first adjusting component, and a second adjusting component. The second adjusting component adjusts the position of the device in the first direction. The measuring instrument and the first adjusting component are fixedly connected. The first adjusting component and the second adjusting component are also fixedly connected. The first adjusting component includes a Z-axis adjusting mechanism, a Y-axis adjusting mechanism, and a first connecting member. The Y-axis adjusting mechanism adjusts the position of the device in the second direction, and the Z-axis adjusting mechanism adjusts the position of the device in the third direction. The Y-axis adjusting mechanism and the first connecting member are fixedly connected, and the Z-axis adjusting mechanism and the first connecting member are also fixedly connected.

[0006] Optionally, the Z-axis adjustment mechanism includes a first adjustment knob, a first locking member, a Z-axis fixed plate, and a Z-axis movable plate; the Z-axis movable plate is fixedly connected to the measuring instrument; the Z-axis fixed plate and the Z-axis movable plate are slidably connected along the Z direction, and the Z-axis fixed plate is fixedly connected to the first connecting member; the first adjustment knob is drivenly connected to the Z-axis movable plate and is used to adjust the position of the Z-axis movable plate relative to the Z-axis fixed plate; the first locking member is connected to the Z-axis movable plate or the Z-axis fixed plate, and the first locking member is used to lock the Z-axis movable plate and the Z-axis fixed plate.

[0007] Optionally, the Y-axis adjustment mechanism includes a second adjustment knob, a second locking member, a Y-axis fixed plate, and a Y-axis movable plate; the Y-axis fixed plate is fixedly connected to the second adjustment assembly; the Y-axis fixed plate and the Y-axis movable plate are slidably connected along the Y direction, and the Y-axis movable plate is fixedly connected to the first connecting member; the second adjustment knob is drivenly connected to the Y-axis movable plate and is used to adjust the position of the Y-axis movable plate relative to the Y-axis fixed plate; the second locking member is connected to the Y-axis movable plate or the Y-axis fixed plate, and the second locking member is used to lock the Y-axis movable plate and the Y-axis fixed plate.

[0008] Optionally, the second adjustment component includes a second connector and an X-axis adjustment mechanism; the second connector is fixedly connected to the Y-axis adjustment mechanism and the X-axis adjustment mechanism; the X-axis adjustment mechanism includes a slide rail, a slider, and a base; the slider is disposed on the side of the second connector away from the first adjustment component and is fixedly connected to the second connector; the slider is slidably connected to the slide rail; and the slide rail is fixedly connected to the base.

[0009] Optionally, the X-axis adjustment mechanism further includes a lead screw, a lead screw nut, a first gear, a second gear, a handwheel, and a locking mechanism; the lead screw passes through the base and is rotatably connected to the base; the lead screw nut is sleeved on the lead screw and fixedly connected to the second connecting member; the first gear is fixedly connected to one end of the lead screw, and the second gear meshes with the first gear; the handwheel is fixedly connected to the second gear; the locking mechanism is connected to the handwheel and is used to lock the handwheel.

[0010] Optionally, the locking mechanism includes a clamp and a locking wrench; the clamp is sleeved outside the drive shaft of the handwheel; the locking wrench and the clamp are rotatably connected; when the locking wrench is rotated to a first position, the clamp releases the drive shaft of the handwheel; when the locking wrench is rotated to a second position, the clamp clamps the drive shaft of the handwheel.

[0011] Optionally, the measuring device further includes a scale positioning assembly; the scale positioning assembly includes: a vernier, a third connector, a scale, and a mounting base; the third connector and the second connector are fixedly connected; the vernier is sleeved on the scale and fixedly connected to the third connector; both ends of the scale are fixedly mounted on the mounting base.

[0012] Optionally, the measuring device further includes a support assembly; the support assembly includes a fixed base; the second adjustment assembly is fixedly connected to the fixed base; the fixed base is used to mount the measuring device on the product rack to be tested.

[0013] Optionally, the support assembly further includes a support column, a base plate, a level, and a set screw; the support column has a first end and a second end in opposite directions, the first end being fixedly connected to the fixed base, and the second end being fixedly connected to the base plate; the level is detachably mounted on the base plate; The set screw is threadedly connected to the base plate; the base plate is used to mount the measuring device on the product frame to be tested.

[0014] Secondly, embodiments of this application provide an electrode slurry coating apparatus, the electrode slurry coating apparatus including the circular runout measuring device for coating rollers as described in any of the above claims.

[0015] Optionally, the electrode slurry coating equipment further includes: a frame and a coating roller; the frame is used to mount the coating roller; the measuring device is detachably connected to the frame; and the probe of the measuring instrument is set perpendicular to the surface of the coating roller.

[0016] Optionally, the electrode slurry coating equipment further includes: a positioning plate; the positioning plate is fixedly connected to the frame, and the axis of the positioning plate along the first direction X is parallel to the roller surface of the coating roller; the positioning plate has at least one recess on the side near the base plate; the base plate has at least one protrusion on the side near the positioning plate, and the protrusion is embedded in the recess.

[0017] In this embodiment, the measuring instrument can be adjusted in multiple dimensions through the connection of the first and second adjustment components. The Z-axis adjustment mechanism and the Y-axis adjustment mechanism can precisely adjust the measuring instrument in the Z-axis and Y-axis directions, respectively, so that the probe of the measuring instrument can be accurately positioned at the measurement position of the coating roller. Furthermore, the probe can be adjusted to be perpendicular to the coating roller surface or at another suitable angle according to the actual situation of the coating roller and the measurement requirements, thereby achieving accurate measurement of the coating roller's circular runout. The design of the Z-axis adjustment mechanism, Y-axis adjustment mechanism, and the first connecting member in the first adjustment component allows the detection device to adapt to coating rollers of different sizes and installation positions, as well as various complex situations that may occur during the measurement process, such as installation deviations of the coating roller and limitations of surrounding space. Through the synergistic effect of the adjustment mechanisms, the measuring instrument can be quickly and easily adjusted to the optimal measurement position, improving the versatility and adaptability of the measuring device. The measuring instrument is fixedly connected to the first adjustment component, which in turn is fixedly connected to the second adjustment component. This stable connection method ensures the relative position stability between the various components during the measurement process. When measuring the circular runout of coating rollers, this method effectively reduces measurement errors caused by loose or wobbly components, improving the reliability and repeatability of measurement results. Simultaneously, the stable structure helps extend the service life of the measuring device and reduces the risk of equipment damage due to frequent adjustments or unstable factors. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the measuring device provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the first adjustment component; Figure 3 yes Figure 1 A schematic diagram of the second adjustment component; Figure 4 yes Figure 3 A front view of the second adjustment component; Figure 5 yes Figure 4 Cross-sectional view of AA in the middle; Figure 6 yes Figure 1 A schematic diagram of the middle scale positioning component; Figure 7 yes Figure 1 A schematic diagram of the supporting components; Figure 8 yes Figure 1 A schematic diagram of the supporting component structure and the horizontal positioning structure; Figure 9 yes Figure 1 Another schematic diagram of the supporting component structure and the horizontal positioning structure; Figure 10 This is a reference diagram showing the usage status of the measuring device provided in this embodiment of the utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Measuring device; 11. Measuring instrument; 12. First adjustment assembly; 121. Z-axis adjustment mechanism; 1211. First adjustment knob; 1212. First locking element; 1213. Z-axis fixed plate; 1214. Z-axis movable plate; 122. Y-axis adjustment mechanism; 1221. Second adjustment knob; 1222. Second locking element; 1223. Y-axis fixed plate; 1224. Y-axis movable plate; 123. First connecting element; 13. Second adjustment assembly; 131. Second connecting element; 132. X-axis adjustment mechanism; 1321. Slide rail; 1322. Slider; 1323. Base. 1324. Lead screw; 1325. Lead screw nut; 1326. First gear; 1327. Second gear; 1328. Handwheel; 1329. Locking mechanism; 13291. Clamp; 13292. Locking wrench; 14. Scale positioning assembly; 141. Vernier; 142. Third connector; 143. Scale; 144. Mounting base; 15. Support assembly; 151. Fixed base; 152. Support column; 153. Base plate; 1531. Protrusion; 154. Level; 155. Set screw; 2. Frame; 3. Coating roller; 4. Positioning plate; 41. Recess. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0021] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] The circular runout measuring device for coating rollers provided in this utility model will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0023] In lithium battery manufacturing, insufficient machining precision of equipment can lead to geometric deviations (such as cylindricity errors) or excessive assembly clearances in the coating rollers, causing radial runout during high-speed rotation. Long-term use can result in worn bearings, poor lubrication, or loose installation, compromising the roller's rotational stability. Uneven slurry application during coating can cause localized stress, leading to roller imbalance and vibration. Insufficient rigidity of the equipment base or improper leveling can also transmit this stress to the coating rollers, causing runout. Furthermore, external factors such as environmental vibrations and temperature changes causing thermal expansion and contraction of components can exacerbate the runout of the coating rollers. These factors interact, ultimately causing the coating rollers to deviate from their ideal trajectory during rotation, resulting in runout exceeding permissible limits. This runout leads to longitudinal, regular fluctuations in areal density, affecting the consistency of the coating areal density, which directly determines the battery's energy density, cycle life, and safety.

[0024] In production, to detect whether the circular runout exceeds the allowable range, the circular runout of the coating roller is currently measured manually using a dial indicator base. This method suffers from inaccurate positioning, resulting in insufficient measurement accuracy. Furthermore, changing the testing point requires repositioning, affecting measurement efficiency. Therefore, this application provides a measuring device for measuring the circular runout of the coating roller in an electrode slurry coating equipment to determine whether the roller can continue to be used.

[0025] Example 1 refer to Figures 1 to 2 This application provides a circular runout measuring device 1 for a coating roller, having a first direction X, a second direction Y, and a third direction Z, all of which are mutually perpendicular. The circular runout measuring device 1 includes a measuring instrument 11, a first adjusting component 12, and a second adjusting component 13. The second adjusting component 13 is used to adjust the position of the circular runout measuring device 1 in the first direction X. The measuring instrument 11 and the first adjusting component 12 are fixedly connected. The adjustment assembly 13 is fixedly connected; the first adjustment assembly 12 includes a Z-axis adjustment mechanism 121, a Y-axis adjustment mechanism 122, and a first connecting member 123. The Y-axis adjustment mechanism 122 is used to adjust the position of the circular runout measuring device 1 for the coating roller in the second direction Y, and the Z-axis adjustment mechanism 121 is used to adjust the position of the circular runout measuring device 1 for the coating roller in the third direction Z. The Y-axis adjustment mechanism 122 and the first connecting member 123 are fixedly connected, and the Z-axis adjustment mechanism 121 and the first connecting member 123 are fixedly connected.

[0026] Specifically, the measuring instrument 11 is used to measure the coating roller and is the core measuring component of the entire device, capable of acquiring relevant data information of the measured roller. The Z-axis adjustment mechanism 121 mainly functions to adjust the position of the measuring instrument in the Z-axis direction. It allows the measuring instrument to move up and down along the Z-axis, thereby precisely adjusting the relative position of the measuring instrument and the measured object in the Z-axis dimension to adapt to measurement requirements at different heights, ensuring that the measuring instrument can accurately contact the measured part or be in the optimal measurement position. The Y-axis adjustment mechanism 122 is responsible for adjusting the position of the measuring instrument in the Y-axis direction, which can improve the accuracy and flexibility of the measurement. The first connecting member 123 connects the Z-axis adjustment mechanism 121 and the Y-axis adjustment mechanism 122, enabling them to work together and providing a stable connection structure for the Z-axis adjustment mechanism 121 and the Y-axis adjustment mechanism 122, ensuring stability and reliability during the adjustment process. It also connects them to the measuring instrument 11 and the second adjustment component 13 to form a complete adjustment system. The second adjustment component 13 is fixedly connected to the first adjustment component 12, which can further expand the adjustment capability of the measuring device. It can be used to adjust in other directions or to adjust the attitude of the measuring instrument, so that the measuring device can more comprehensively adapt to various complex measurement scenarios and needs.

[0027] By combining the Z-axis adjustment mechanism 121 and the Y-axis adjustment mechanism 122, the measuring instrument can make precise position adjustments in two dimensions. Combined with other directional adjustments that the second adjustment component 13 may provide, the measuring device can precisely control the position and orientation of the measuring instrument in multiple dimensions. No matter how complex the position of the object being measured is, the measuring instrument can be accurately positioned to the desired measurement location by adjusting the various components, greatly improving the adaptability and accuracy of the measurement.

[0028] The fixed connection method between the components ensures the structural stability of the entire measuring device. During the measurement process, it effectively reduces the impact of external vibrations, interference, or unstable factors during adjustment on the measurement results, ensuring that the measuring instrument maintains a stable position and attitude during the measurement process, thereby improving the reliability and repeatability of the measurement results and providing a strong guarantee for obtaining accurate measurement data.

[0029] This modular adjustment structure makes the measuring device more flexible and convenient to switch between different measurement tasks. By simply adjusting the corresponding components, the measuring instrument can be quickly adjusted to the position and orientation suitable for the new measurement task, without the need to reinstall or replace the measuring equipment, saving a lot of time and effort and improving the efficiency of measurement work.

[0030] Example 2 Embodiment 2 of this application is a further improvement on the circular runout measuring device for coating rollers in Embodiment 1 of this application. (See reference...) Figures 1 to 2The Z-axis adjustment mechanism 121 includes a first adjustment knob 1211, a first locking member 1212, a Z-axis fixed plate 1213, and a Z-axis movable plate 1214. The Z-axis movable plate 1214 is fixedly connected to the measuring instrument 11. The Z-axis fixed plate 1213 and the Z-axis movable plate 1214 are slidably connected along the Z direction, and the Z-axis fixed plate 1213 is fixedly connected to the first connecting member 123. The first adjustment knob 1211 is drivenly connected to the Z-axis movable plate 1214 and is used to adjust the position of the Z-axis movable plate 1214 relative to the Z-axis fixed plate 1213. The first locking member 1212 is connected to the Z-axis movable plate 1214 or the Z-axis fixed plate 1213 and is used to lock the Z-axis movable plate 1214 and the Z-axis fixed plate 1213.

[0031] The first adjustment knob 1211 is used for Z-axis direction adjustment. By rotating the first adjustment knob 1211, a transmission can be formed with the Z-axis movable plate 1214, thereby precisely adjusting the position of the Z-axis movable plate 1214 relative to the Z-axis fixed plate 1213 in the Z-axis direction, so that the measuring instrument 11 can accurately move to the required measurement position in the Z-axis direction. The first locking member 1212 is used to lock the Z-axis movable plate 1214 and the Z-axis fixed plate 1213 after adjustment to the appropriate position. It can prevent the Z-axis movable plate 1214 from moving due to external interference or misoperation during the measurement process, ensuring that the position of the measuring instrument 11 in the Z-axis direction remains stable, thereby ensuring the accuracy of the measurement results. The Z-axis fixed plate 1213 serves to fix and support. On one hand, it is fixedly connected to the first connecting member 123, providing an interface for the entire Z-axis adjustment mechanism to connect with other components, enabling the Z-axis adjustment mechanism to be stably integrated into the measuring device. On the other hand, it is slidably connected to the Z-axis movable plate 1214 along the Z-direction, providing guidance and support for the movement of the Z-axis movable plate 1214, ensuring that the Z-axis movable plate 1214 can move smoothly and accurately in the Z-axis direction. The main function of the Z-axis movable plate 1214 is to connect the measuring instrument 11 and realize its position adjustment in the Z-axis direction. It is fixedly connected to the measuring instrument 11, and when it slides along the Z-direction on the Z-axis fixed plate 1213, it can drive the measuring instrument 11 to move together, thereby realizing the precise position adjustment of the measuring instrument 11 in the Z-axis direction to meet the height position requirements of different measurement tasks.

[0032] The first adjustment knob 1211 is connected to the Z-axis movable plate 1214 via a transmission mechanism, enabling precise position adjustment of the measuring instrument 11 in the Z-axis direction. Operators can slowly and precisely rotate the first adjustment knob 1211 to move the measuring instrument 11 to millimeter or even smaller precision levels in the Z-axis direction, meeting the requirements of various high-precision measurement tasks.

[0033] After adjustment, the first locking element 1212 locks the Z-axis movable plate 1214 and the Z-axis fixed plate 1213, ensuring that the measuring instrument 11 maintains a fixed Z-axis position during measurement. Even in the presence of vibration or other interference factors in the measurement environment, it can effectively prevent the measuring instrument 11 from moving unexpectedly, ensuring the stability and reliability of the measurement results and improving the applicability of the measuring device under various working conditions.

[0034] The fixed connection between the Z-axis fixed plate 1213 and the first connecting member 123, and the fixed connection between the Z-axis movable plate 1214 and the measuring instrument 11, enable the Z-axis adjustment mechanism to be tightly integrated with the entire measuring device. This integrated design not only ensures the stability of the Z-axis adjustment mechanism in the device, but also makes the entire measuring device structure compact and the collaborative work between the components smoother, which is conducive to improving the overall performance and working efficiency of the measuring device.

[0035] Example 3 Embodiment 3 of this application is a further improvement on the circular runout measuring device for coating rollers in Embodiment 2 of this application. (See reference...) Figures 1 to 2 The Y-axis adjustment mechanism 122 includes a second adjustment knob 1221, a second locking member 1222, a Y-axis fixed plate 1223, and a Y-axis movable plate 1224. The Y-axis fixed plate 1223 is fixedly connected to the second adjustment assembly 13. The Y-axis fixed plate 1223 and the Y-axis movable plate 1224 are slidably connected along the Y direction, and the Y-axis movable plate 1224 is fixedly connected to the first connecting member 123. The second adjustment knob 1221 is drivenly connected to the Y-axis movable plate 1224 and is used to adjust the position of the Y-axis movable plate 1224 relative to the Y-axis fixed plate 1223. The second locking member 1222 is connected to the Y-axis movable plate 1224 or the Y-axis fixed plate 1223 and is used to lock the Y-axis movable plate 1224 and the Y-axis fixed plate 1223.

[0036] The second adjustment knob 1221 is the operating component for adjusting the Y-axis direction. By rotating this knob, a transmission is formed with the Y-axis movable plate 1224, which can precisely adjust the position of the Y-axis movable plate 1224 relative to the Y-axis fixed plate 1223 in the Y-axis direction. This, in turn, drives the first connecting member 123 and the measuring instrument 11 connected thereto to move in the Y-axis direction, thereby adjusting the position of the measuring instrument 11 in the Y-axis direction and meeting the requirements for the lateral position of the measuring instrument in different measurement scenarios. The second locking member 1222 is used to lock the Y-axis movable plate 1224 and the Y-axis fixed plate 1223 after the Y-axis movable plate 1224 is adjusted to the appropriate position. It can prevent the Y-axis movable plate 1224 from moving due to external factors during the measurement process, ensuring the stability of the position of the measuring instrument 11 in the Y-axis direction and ensuring the accuracy of the measurement results. The Y-axis fixed plate 1223 serves as a connector and support. It is fixedly connected to the second adjustment assembly 13, providing an interface for the Y-axis adjustment mechanism to connect with other parts of the entire measuring device, allowing the Y-axis adjustment mechanism to be stably integrated into the measuring device. Simultaneously, it is slidably connected to the Y-axis movable plate 1224 along the Y direction, providing guidance and support for the movement of the Y-axis movable plate 1224, ensuring that the Y-axis movable plate 1224 can move smoothly and accurately in the Y-axis direction. The Y-axis movable plate 1224 is mainly used to connect the first connecting member 123 and realize its position adjustment in the Y-axis direction. It is fixedly connected to the first connecting member 123. When it slides on the Y-axis fixed plate 1223 along the Y direction, it can drive the first connecting member 123 and the measuring instrument 11 connected to it to move together in the Y-axis direction, thereby realizing the precise position adjustment of the measuring instrument 11 in the Y-axis direction to adapt to different measurement objects and measurement requirements.

[0037] Combined with the Z-axis adjustment mechanism, the measuring device can be precisely adjusted in both the Z and Y axes. Operators can precisely control the position of the measuring instrument 11 in space by operating the first adjustment knob 1211 and the second adjustment knob 1221 respectively, enabling accurate alignment with measurement points at different locations. This greatly improves the flexibility and accuracy of the measurement, meeting the measurement needs of various complex shapes and positions.

[0038] After the first locking member 1212 and the second locking member 1222 are adjusted in the Z-axis and Y-axis directions respectively, they lock the corresponding movable plate and fixed plate to ensure that the measuring instrument 11 will not shift its position due to external interference during the measurement process. This dual locking mechanism improves the stability and reliability of the measuring device and ensures the consistency and repeatability of the measurement results.

[0039] The Y-axis adjustment mechanism is connected to the second adjustment component 13 via the Y-axis fixed plate 1223, and to the first connecting member 123 via the Y-axis movable plate 1224, making the entire measuring device more compact. The tight connections between components, the rational layout, and the high degree of integration not only save space but also facilitate installation, debugging, and operation, thereby improving the efficiency of measurement work and reducing measurement errors caused by loose components or unstable connections.

[0040] Example 4 Embodiment 4 of this application is a further improvement on the circular runout measuring device for coating rollers described in Embodiment 1 of this application. (See reference...) Figure 1 , Figures 3 to 5 The second adjustment component 13 includes a second connector 131 and an X-axis adjustment mechanism 132; the second connector 131 is fixedly connected to the Y-axis adjustment mechanism 122 and the X-axis adjustment mechanism 132; the X-axis adjustment mechanism 132 includes a slide rail 1321, a slider 1322 and a base 1323; the slider 1322 is located on the side of the second connector 131 away from the first adjustment component 12 and is fixedly connected to the second connector 131; the slider 1322 is slidably connected to the slide rail 1321; the slide rail 1321 is fixedly connected to the base 1323.

[0041] The second connecting member 131 serves a connecting and transmission function. One end is fixedly connected to the Y-axis adjustment mechanism 122, connecting the Y-axis adjustment mechanism to the second adjustment component 13, allowing Y-axis adjustments to be transmitted to the second adjustment component 13. The other end is fixedly connected to the X-axis adjustment mechanism 132, providing support and a connection point for the X-axis adjustment mechanism, enabling it to work collaboratively with other parts of the measuring device to achieve adjustment of the measuring instrument in different directions. The slide rail 1321 provides a precise sliding track for the slider 1322. It is fixed to the base 1323, ensuring that the slider 1322 can only move linearly along the X-axis direction (i.e., the extension direction of the slide rail), thus limiting the movement path of the measuring instrument in the X-axis direction and ensuring the accuracy and stability of the measuring instrument's adjustment in the X-axis direction. The slider 1322 is fixedly connected to the second connecting member 131, transmitting the movement of the second connecting member 131 to the slide rail 1321, allowing the measuring instrument to move in the X-axis direction as the slider 1322 slides on the slide rail 1321. On the other hand, its sliding on the slide rail 1321 enables the position adjustment of the measuring instrument in the X-axis direction. By adjusting the position of the slider 1322 on the slide rail 1321, the measuring instrument can be aligned with different measurement points to meet the measurement requirements in the X-axis direction. The base 1323 serves as the supporting foundation for the entire X-axis adjustment mechanism, fixing the slide rail 1321 and providing stable support for the entire mechanism. The base 1323 can be fixed to other equipment or a workbench to ensure sufficient stability of the entire measuring device during operation, preventing the measuring instrument from shaking or shifting during adjustment or measurement due to base instability, thereby affecting measurement accuracy.

[0042] By combining the Z-axis and Y-axis adjustment mechanisms, this measuring device achieves precise adjustment along the X, Y, and Z coordinate axes. Operators can precisely control the measuring instrument's position in three-dimensional space by operating the adjustment mechanisms in each direction separately, enabling accurate alignment with measurement points at any location. This greatly improves the flexibility and accuracy of measurements, adapting to various complex shapes and positions to meet diverse measurement needs.

[0043] The second connector 131 tightly connects all parts. The fixation of the slide rail 1321 to the base 1323 and the stable sliding of the slider 1322 on the slide rail 1321 together ensure the stability of the measuring device during adjustment and measurement. Even when adjusting the position of the measuring instrument, good stability can be maintained, reducing measurement errors caused by device shaking or loose parts, and improving the reliability and repeatability of measurement results.

[0044] The tight connections and rational layout of the components make the entire measuring device compact. This compact structure not only saves space and facilitates installation and operation, but also improves the efficiency of measurement work, making it convenient for use in different working environments and reducing the inconvenience caused by complex structures and large sizes.

[0045] Example 5 Embodiment 5 of this application is a further improvement on the circular runout measuring device for coating rollers described in Embodiment 4 of this application. (See reference...) Figure 1 , Figures 3 to 5 The X-axis adjustment mechanism 132 also includes a lead screw 1324, a lead screw nut 1325, a first gear 1326, a second gear 1327, a handwheel 1328, and a locking mechanism 1329. The lead screw 1324 passes through the base 1323 and is rotatably connected to the base 1323. The lead screw nut 1325 is sleeved on the lead screw 1324 and is fixedly connected to the second connecting member 131. The first gear 1326 is fixedly connected to one end of the lead screw 1324, and the second gear 1327 meshes with the first gear 1326. The handwheel 1328 and the second gear 1327 are fixedly connected. The locking mechanism 1329 is connected to the handwheel 1328 and is used to lock the handwheel 1328.

[0046] The lead screw 1324 is rotatably connected to the base 1323. When the lead screw rotates, it drives the lead screw nut 1325, which is sleeved on it, to move along the axial direction of the lead screw, thereby converting the rotational motion of the lead screw into the linear motion of the lead screw nut. This, in turn, drives the second connecting piece 131, which is fixedly connected to the lead screw nut, and the entire measuring instrument to make precise position adjustments in the X-axis direction. The lead screw nut 1325 converts the rotational motion of the lead screw 1324 into linear motion, driving the second connecting piece 131 to move in the X-axis direction. Because it is fixedly connected to the second connecting piece 131, it can precisely control the position of the measuring instrument in the X-axis direction. The distance it moves is related to the rotation angle and pitch of the lead screw 1324. In this way, high-precision position adjustment can be achieved. The first gear 1326 is fixedly connected to one end of the lead screw 1324, transmitting the rotation of the lead screw 1324 to the meshing second gear 1327, realizing the transmission of power and the conversion of speed. Through the meshing transmission of the two gears, the direction and magnitude of the force transmission can be changed to adapt to different adjustment requirements. The second gear 1327 meshes with the first gear 1326, receiving power from the first gear and transmitting it to the handwheel 1328. Simultaneously, its meshing with the first gear can also decelerate or accelerate the movement of the handwheel. The speed relationship between the handwheel's rotation and the lead screw's rotation is changed according to the gear ratio, thereby controlling the X-axis adjustment speed of the measuring instrument. This allows for more precise or faster adjustment to meet the needs of different measurement scenarios. The operator rotates the handwheel 1328, driving the second gear 1327 to rotate, which in turn drives the lead screw 1324 through the first gear 1326, ultimately adjusting the measuring instrument's position in the X-axis direction. The handwheel design facilitates manual operation and allows for precise control of the measuring instrument's movement speed and position by applying different forces as needed. A locking mechanism 1329, connected to the handwheel 1328, locks the handwheel 1328 after the measuring instrument is adjusted to the appropriate position, preventing accidental rotation and ensuring the measuring instrument's position is fixed in the X-axis direction. This prevents changes in the measuring instrument's position due to external interference or misoperation, ensuring stability and accuracy during the measurement process.

[0047] The combination of a lead screw-lead screw-nut transmission mechanism and a gear transmission system enables the measuring instrument to achieve precise position adjustment in the X-axis direction. Through the rotation of the handwheel, and via the transmission of the gears and the action of the lead screw, the measuring instrument can make minute position adjustments, meeting the position adjustment requirements of high-precision measurements. This ensures accurate alignment with the measurement target, improving the precision and accuracy of the measurement.

[0048] The handwheel design allows operators to easily adjust the position of the measuring instrument manually. Operators can easily turn the handwheel to control the instrument's movement along the X-axis as needed. Simultaneously, the locking mechanism promptly secures the handwheel after adjustment, preventing accidental movement and making the operation more convenient and reliable, thus improving the efficiency and stability of the measurement work.

[0049] The tight connection and coordinated operation of all components, along with the locking mechanism's function of locking the handwheel, enhance the stability and reliability of the entire measuring device in the X-axis direction. During measurement, it effectively prevents the measuring instrument from shifting position due to external interference or its own vibration, ensuring the accuracy and repeatability of the measurement results and enabling the measuring device to operate stably in various complex working environments.

[0050] Example 6 Embodiment Six of this application is a further improvement on the circular runout measuring device for coating rollers in Embodiment Five of this application. (See reference...) Figure 1 , Figures 3 to 5 The locking mechanism 1329 includes a clamp 13291 and a locking wrench 13292. The clamp 13291 is sleeved on the outside of the drive shaft of the handwheel 1328. The locking wrench 13292 and the clamp 13291 are rotatably connected. When the locking wrench 13292 is rotated to the first position, the clamp 13291 releases the drive shaft of the handwheel 1328. When the locking wrench 13292 is rotated to the second position, the clamp 13291 clamps the drive shaft of the handwheel 1328.

[0051] Clamp 13291 is fitted over the drive shaft of handwheel 1328. Its tightness controls whether the drive shaft of handwheel 1328 can rotate, thereby controlling the operation of the X-axis adjustment mechanism. Locking wrench 13292 is rotatably connected to clamp 13291, and its position is controlled by rotating it to different positions. When rotated to the first position, clamp 13291 releases the drive shaft of handwheel 1328, allowing handwheel 1328 to rotate freely and thus adjust its X-axis position. When rotated to the second position, clamp 13291 clamps the drive shaft of handwheel 1328, preventing handwheel 1328 from rotating and locking the X-axis adjustment, thus fixing the measuring device in its X-axis position.

[0052] The locking mechanism 1329 allows for precise locking and unlocking of the handwheel 1328, thereby enabling precise control of the X-axis adjustment. When it is necessary to adjust the position of the measuring instrument 11 in the X-axis direction, the locking wrench 13292 can be released, and the handwheel 1328 can be rotated for precise adjustment. After adjustment, the handwheel 1328 can be locked again using the locking wrench 13292 to ensure that the position of the measuring instrument 11 in the X-axis direction is fixed, thus improving the accuracy and stability of the measuring device's positioning in the X-axis direction.

[0053] The locking mechanism 1329 allows operators to easily lock or unlock the X-axis adjustment as needed, making operation simple and quick. Simultaneously, the cooperation between the clamp 13291 and the locking wrench 13292 provides a reliable locking function, ensuring that the measuring instrument 11 will not change its X-axis position due to accidental contact or other reasons during the measurement process. This improves the overall reliability and stability of the measuring device, and is beneficial for improving measurement accuracy and efficiency.

[0054] Example 7 Embodiment 7 of this application is a further improvement on the circular runout measuring device for coating rollers described in Embodiments 5 or 6 of this application. (See reference...) Figure 1 , Figure 6 The measuring device 1 also includes a scale positioning assembly 14; the scale positioning assembly 14 includes: a vernier 141, a third connector 142, a scale 143 and a mounting base 144; the third connector 142 and the second connector 131 are fixedly connected; the vernier 141 is sleeved on the scale 143 and is fixedly connected to the third connector 142; both ends of the scale 143 are fixedly mounted on the mounting base 144.

[0055] The vernier 141 is fitted onto the scale 143 and fixedly connected to the third connector 142. It moves with the third connector 142 and other parts of the measuring device connected to it. By cooperating with the scale 143, it can accurately read the positional change of the measuring device in the corresponding direction. The third connector 142 connects the second connector 131 and the vernier 141, allowing the vernier 141 to move along with the parts of the measuring device associated with the second connector 131, thus accurately reflecting the displacement of the measuring device in the corresponding direction. The scale 143 is fixedly mounted on the mounting base 144, providing a measurement reference for the vernier 141. It is marked with graduations, and specific values ​​can be read through the vernier 141 to determine the position or displacement of the measuring device in a specific direction. The mounting base 144 fixes both ends of the scale 143, ensuring that the scale 143 maintains a stable position and providing a stable reference support for accurate measurement.

[0056] The scale positioning component 14 enables the measuring device to accurately measure and read the positional changes of the measuring instrument in a specific direction. The cooperation between the vernier 141 and the scale 143 can achieve high measurement accuracy, accurately acquire the displacement information of the measuring device in the corresponding direction, and help improve the accuracy and reliability of the measurement.

[0057] Operators can intuitively read values ​​from the vernier 141 and scale 143 to understand the position and status of the measuring device, facilitating adjustments and positioning during the measurement process. This intuitive display method reduces operational complexity, improves measurement efficiency, and makes the measurement process more convenient and accurate.

[0058] The scale positioning component 14 adds the function of accurately measuring position changes to the measuring device. When combined with other adjustment mechanisms (such as X, Y, and Z axis adjustment mechanisms), it can more comprehensively position and adjust the measuring instrument, meet the requirements of precision and accuracy in different measurement scenarios, and improve the overall performance and applicability of the measuring device.

[0059] Example 8 Embodiment 8 of this application is a further improvement on the circular runout measuring device for coating rollers described in Embodiment 1 of this application. (See reference...) Figure 1 , Figures 7 to 9 The measuring device 1 also includes a support assembly 15; the support assembly 15 includes a fixed base 151; the second adjustment assembly 13 is fixedly connected to the fixed base 151; the fixed base 151 is used to install the measuring device on the product rack to be measured.

[0060] The fixed base 151 provides a stable mounting foundation. It is fixedly connected to the second adjustment assembly 13, connecting the adjustment mechanism of the entire measuring device to itself, and also used to mount the measuring device on the product rack to be measured, ensuring that the measuring device can be stably placed in the position to be measured, providing stable support for the measurement work.

[0061] The fixed base 151 securely mounts the measuring device onto the frame of the product under test, preventing the measuring device from shaking or shifting during measurement and ensuring the accuracy and stability of the measurement. It provides reliable support for the entire measuring device, allowing the adjustment mechanism and measuring components to operate in a stable environment, thus contributing to improved reliability and repeatability of the measurement results.

[0062] By mounting the measuring device on the product rack, operators can easily measure the product without additional support or fixing equipment. Simultaneously, the fixed connection between the fixed base 151 and the second adjustment component 13 allows the adjustment mechanism to be precisely adjusted on a stable basis, enabling operators to easily adjust the position of the measuring device as needed to adapt to different measurement requirements. Operators can quickly install the measuring device on the product rack and make precise adjustments through the adjustment mechanism, thereby reducing measurement preparation time and operational difficulty, and improving overall measurement efficiency.

[0063] Example 9 Embodiment 9 of this application is a further improvement on the circular runout measuring device for coating rollers in Embodiment 8 of this application. (See reference...) Figures 8 to 9The support assembly 15 also includes a support column 152, a base plate 153, a level 154, and a set screw 155; the support column 152 has a first end and a second end in opposite directions, the first end is fixedly connected to the fixed base 151, and the second end is fixedly connected to the base plate 153; the level 154 is detachably mounted on the base plate 153; the set screw 155 is threadedly connected to the base plate 153; the base plate 153 is used to mount the measuring device on the product frame to be measured.

[0064] The support column 152 connects the fixed base 151 and the base plate 153, providing support and force transmission to ensure that the measuring device on the fixed base 151 can be stably mounted on the product frame under test via the base plate 153, maintaining the overall structural stability of the measuring device. The base plate 153, as the connection interface between the measuring device and the product frame under test, provides a large mounting surface, allowing the measuring device to be mounted more securely on the product frame. It also provides mounting positions for the level 154 and the set screw 155. The level 154 is detachably mounted on the base plate 153 and is used to detect the levelness of the base plate 153 and the entire measuring device. The operator can adjust the set screw 155 or other related components according to the indication of the level 154 to ensure the measuring device is level, guaranteeing measurement accuracy. In actual use, two or more levels can be used in conjunction to further ensure the measuring instrument remains level. Set screw 155: Threaded connection to base plate 153. By rotating set screw 155, the contact state between base plate 153 and product frame can be adjusted, thereby fine-tuning the level and height of the measuring device, so that the measuring device can better adapt to different measuring environments and the surface condition of the product frame.

[0065] The support column 152, base plate 153, level 154, and set screw 155 work together to enhance the stability of the measuring device mounted on the frame of the product under test. The support column 152 provides a reliable support structure, the base plate 153 increases the mounting area, the level 154 ensures the device is level, and the set screw 155 is used for fine adjustment. These components work together to reduce errors caused by instability or non-levelness of the device during measurement.

[0066] The combined use of the level 154 and the set screw 155 allows the measuring device to be precisely adjusted to a horizontal position, which is crucial for ensuring measurement accuracy. The base plate 153 serves as the mounting foundation, and combined with the adjustment function of the set screw 155, enables the measuring device to adapt to product frames of different shapes and surface conditions. Whether the product frame is flat or has a certain tilt, the measuring device can be kept level and securely installed by adjusting the set screw 155, thus expanding the applicability of the measuring device.

[0067] The detachable design of the level 154 facilitates its replacement and maintenance, and also allows operators to use it flexibly in different measurement scenarios. The threaded connection of the set screw 155 makes the adjustment process simple and easy. Operators can quickly adjust the levelness and height of the measuring device by rotating the set screw 155, improving the convenience of operation.

[0068] Example 10 Embodiment 10 of this application provides an electrode slurry coating device, which includes the circular runout measuring device 1 for the coating roller as described in any one of Embodiments 1 to 9 above.

[0069] By using the aforementioned measuring device 1 in an electrode slurry coating equipment, precise measurement of the coating roller's circular runout can be achieved. This allows for the assessment of the coating roller's quality, calibration and adjustment of the coating equipment, thereby enabling precise control of coating quality and improving the consistency and stability of electrode products.

[0070] Example 11 Embodiment 11 of this application is a further improvement on the electrode slurry coating equipment in Embodiment 10 of this application. (Reference) Figure 10 The electrode slurry coating equipment also includes: a frame 2 and a coating roller 3; the frame 2 is used to install the coating roller 3; the measuring device 1 is detachably connected to the frame 2; the probe of the measuring instrument 11 is set perpendicular to the surface of the coating roller 3.

[0071] The frame 2 is the basic support structure of the electrode slurry coating equipment. Its main function is to provide an installation position for the coating roller 3, ensuring that the coating roller 3 can be stably installed in the designated position and perform normal coating work.

[0072] The measuring device 1 is detachably connected to the frame 2, facilitating installation, disassembly, and maintenance as needed. The probe of the measuring instrument 11 is positioned perpendicular to the surface of the coating roller 3, enabling accurate measurement of the slurry condition on the surface of the coating roller 3 or relevant parameters of the electrode sheet after passing through the coating roller 3, allowing for timely detection of abnormalities during the coating process. This also makes the entire device highly flexible and maintainable. During equipment debugging, maintenance, or component replacement, the measuring device 1 can be easily disassembled without affecting the normal operation of the coating roller 3 and other components.

[0073] Example 12 Embodiment 12 of this application is a further improvement on the electrode slurry coating equipment in Embodiment 11 of this application. (Reference) Figures 8 to 10 The electrode slurry coating equipment also includes: a positioning plate 4; the positioning plate 4 is fixedly connected to the frame 2, and the axis of the positioning plate 4 along the X direction is parallel to the roller surface of the coating roller 3; the positioning plate 4 has at least one recess 41 on the side near the bottom plate 153; the bottom plate 153 has at least one protrusion 1531 on the side near the positioning plate 4, and the protrusion 1531 is embedded in the recess 41.

[0074] The positioning plate 4 is fixedly connected to the frame 2, serving as an auxiliary positioning and support. The positioning plate 4's axis along the X-direction is parallel to the roller surface of the coating roller 3, providing a reference direction parallel to the coating roller 3 for the installation of the measuring device 1, which helps ensure the accuracy and consistency of the measurement. Its recessed portion 41 near the base plate 153 is used to cooperate with the protrusion 1531 on the base plate 153, achieving precise positioning of the measuring device 1 during installation. The recessed portion 41 can accommodate the protrusion 1531 of the base plate 153, restricting the movement of the base plate 153 in the horizontal direction (X-direction and possible other directions), ensuring that the measuring device 1 is accurately positioned in the preset position when installed on the frame 2, guaranteeing the correct relative positional relationship between the probe of the measuring instrument 11 and the coating roller 3, thereby improving the accuracy of the measurement. The protrusion 1531 is located on the side of the base plate 153 near the positioning plate 4. It cooperates with the recess 41 and is inserted into the recess 41 to realize the quick positioning and connection of the base plate 153 and the positioning plate 4, ensuring the repeatability and accuracy of the installation of the measuring device 1. It also enhances the stability of the measuring device 1 after installation and reduces the positional deviation caused by vibration or other external forces.

[0075] This positioning structure makes the installation of the measuring device 1 simpler and faster. Workers can quickly install the measuring device 1 by accurately inserting the protrusion 1531 into the recess 41, and it can also be easily disassembled and maintained. When it is necessary to inspect, replace parts, or adjust the position of the measuring device 1, it can be easily removed from the frame 2 without affecting the position and status of other components, thus improving the maintainability and efficiency of the equipment.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A circular runout measuring device (1) for coating rollers, characterized in that, The circular runout measuring device (1) for the coating roller has a first direction (X), a second direction (Y) and a third direction (Z), wherein the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other. The circular runout measuring device (1) for coating rollers includes a measuring instrument (11), a first adjusting component (12), and a second adjusting component (13). The second adjusting component (13) is used to adjust the position of the circular runout measuring device (1) for coating rollers in the first direction (X). The measuring instrument (11) and the first adjustment component (12) are fixedly connected; The first adjustment component (12) and the second adjustment component (13) are fixedly connected; The first adjustment component (12) includes a Z-axis adjustment mechanism (121), a Y-axis adjustment mechanism (122), and a first connecting member (123). The Y-axis adjustment mechanism (122) is used to adjust the position of the circular runout measuring device (1) for the coating roller in the second direction (Y), and the Z-axis adjustment mechanism (121) is used to adjust the position of the circular runout measuring device (1) for the coating roller in the third direction (Z). The Y-axis adjustment mechanism (122) is fixedly connected to the first connector (123), and the Z-axis adjustment mechanism (121) is fixedly connected to the first connector (123).

2. The roundness measuring device (1) for a coating roll according to claim 1, characterized in that The Z-axis adjustment mechanism (121) includes a first adjustment knob (1211), a first locking member (1212), a Z-axis fixed plate (1213), and a Z-axis movable plate (1214). The Z-axis movable plate (1214) and the measuring instrument (11) are fixedly connected; The Z-axis fixed plate (1213) and the Z-axis movable plate (1214) are slidably connected along the third direction (Z), and the Z-axis fixed plate (1213) and the first connecting member (123) are fixedly connected; The first adjustment knob (1211) is connected to the Z-axis movable plate (1214) for adjusting the position of the Z-axis movable plate (1214) relative to the Z-axis fixed plate (1213); The first locking member (1212) is connected to the Z-axis movable plate (1214) or the Z-axis fixed plate (1213), and the first locking member (1212) is used to lock the Z-axis movable plate (1214) and the Z-axis fixed plate (1213).

3. The roundness measuring device (1) for a coating roll according to claim 2, characterized in that The Y-axis adjustment mechanism (122) has a second adjustment knob (1221), a second locking member (1222), a Y-axis fixed plate (1223), and a Y-axis movable plate (1224). The Y-axis fixing plate (1223) is fixedly connected to the second adjustment component (13); The Y-axis fixed plate (1223) and the Y-axis movable plate (1224) are slidably connected along the second direction (Y), and the Y-axis movable plate (1224) and the first connecting member (123) are fixedly connected; The second adjustment knob (1221) is connected to the Y-axis movable plate (1224) for adjusting the position of the Y-axis movable plate (1224) relative to the Y-axis fixed plate (1223); The second locking member (1222) is connected to the Y-axis movable plate (1224) or the Y-axis fixed plate (1223), and the second locking member (1222) is used to lock the Y-axis movable plate (1224) and the Y-axis fixed plate (1223).

4. The roundness measuring device (1) for a coating roll according to claim 1, characterized in that The second adjustment component (13) includes a second connector (131) and an X-axis adjustment mechanism (132). The second connector (131) is fixedly connected to the Y-axis adjustment mechanism (122), and the second connector (131) is fixedly connected to the X-axis adjustment mechanism (132); The X-axis adjustment mechanism (132) includes a slide rail (1321), a slider (1322), and a base (1323). The slider (1322) is located on the side of the second connector (131) away from the first adjustment component (12) and is fixedly connected to the second connector (131); The slider (1322) is slidably connected to the slide rail (1321); The slide rail (1321) is fixedly connected to the base (1323).

5. The roundness measuring device (1) for a coating roll according to claim 4, characterized in that The X-axis adjustment mechanism (132) also includes a lead screw (1324), a lead screw nut (1325), a first gear (1326), a second gear (1327), a handwheel (1328), and a locking mechanism (1329). The lead screw (1324) passes through the base (1323) and is rotatably connected to the base (1323); The lead screw nut (1325) is sleeved on the lead screw (1324) and fixedly connected to the second connecting piece (131); The first gear (1326) is fixedly connected to one end of the lead screw (1324), and the second gear (1327) meshes with the first gear (1326); The handwheel (1328) and the second gear (1327) are fixedly connected; The locking mechanism (1329) is connected to the handwheel (1328), and the locking mechanism (1329) is used to lock the handwheel (1328).

6. The roundness measuring device (1) for a coating roll according to claim 5, characterized in that The locking mechanism (1329) includes a clamp (13291) and a locking wrench (13292). The clamp (13291) is fitted onto the outside of the drive shaft of the handwheel (1328); The locking wrench (13292) and the clamp (13291) are rotatably connected. When the locking wrench (13292) is rotated to the first position, the clamp (13291) releases the drive shaft of the handwheel (1328); When the locking wrench (13292) is rotated to the second position, the clamp (13291) clamps the drive shaft of the handwheel (1328).

7. A roundness measuring device (1) for a coating roll according to any one of claims 5 or 6, characterized in that The measuring device (1) also includes a scale positioning component (14). The scale positioning component (14) includes: a vernier (141), a third connector (142), a scale (143), and a mounting base (144). The third connector (142) and the second connector (131) are fixedly connected; The vernier (141) is fitted onto the scale (143), and the vernier (141) is fixedly connected to the third connector (142); The two ends of the scale (143) are fixedly mounted on the mounting base (144).

8. The circular runout measuring device (1) for a coating roller according to claim 1, characterized in that, The measuring device (1) also includes a support assembly (15); The support assembly (15) includes a fixed base (151); The second adjustment component (13) is fixedly connected to the fixed base (151); The fixed base (151) is used to mount the measuring device on the product rack to be tested.

9. A roundness measuring device (1) for a coating roll according to claim 8, characterized in that The support assembly (15) also includes a support column (152), a base plate (153), a level (154), and a set screw (155). The support column (152) has a first end and a second end in opposite directions. The first end is fixedly connected to the fixed base (151), and the second end is fixedly connected to the base plate (153). The level (154) is detachably mounted on the base plate (153); The set screw (155) is threadedly connected to the base plate (153); The base plate (153) is used to mount the measuring device on the product rack to be tested.

10. A pole piece slurry coating apparatus characterized by, The electrode slurry coating equipment includes the measuring device (1) as described in any one of claims 1 to 9.

11. The electrode slurry coating equipment according to claim 10, characterized in that, The electrode slurry coating equipment also includes: a frame (2) and a coating roller (3). The frame (2) is used to mount the coating roller (3); The measuring device (1) is detachably connected to the frame (2); The probe of the measuring instrument (11) is positioned perpendicular to the surface of the coating roller (3).

12. The pole piece slurry coating apparatus of claim 11, wherein, The electrode slurry coating equipment also includes: a positioning plate (4). The positioning plate (4) is fixedly connected to the frame (2), and the axis of the positioning plate (4) along the first direction (X) is parallel to the roller surface of the coating roller (3); The positioning plate (4) has at least one recess (41) on the side near the bottom plate (153). The base plate (153) has at least one protrusion (1531) on the side near the positioning plate (4), and the protrusion (1531) is embedded in the recess (41).

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