A water-based paint flowability detection device

Abstract

The application discloses a water-based paint flowability detection device and relates to the technical field of water-based paint detection, aiming to solve the technical problem of the non-intuitive detection effect of the existing water-based paint flowability detection device, comprising a conveyor; a visual detection device is arranged at the output end of the conveyor; a stepping lifting mechanism is arranged at the input end of the conveyor; a double-mode smearing mechanism is fixedly arranged at the lifting end of the stepping lifting mechanism; the double-mode smearing mechanism comprises a mounting base fixed to the lifting end of the stepping lifting mechanism; and a rotating seat is rotatably arranged on the mounting base through a bearing. The application carries out magnified shooting processing on the detection sheet smeared with water-based paint based on the visual detection device, analyzes the residual trace generated after the construction of the water-based paint coating layer through magnified display, and effectively and intuitively obtains the clear and intuitive effect of the flow condition of the coating surface through magnified observation of the residual trace.

Description

Technical Field

[0001] This invention relates to the field of water-based coating testing technology, and more specifically, to a water-based coating flowability testing device. Background Technology

[0002] For paint manufacturers, the flowability of water-based paints is a key indicator of product quality. Testing flowability ensures the consistency of quality across different batches. For example, in large-scale production, slight differences in raw materials and fluctuations in production process parameters can all affect the flowability of the paint. If the flowability of a particular batch of paint deviates significantly from the normal range, it may indicate a problem in the production process, such as incorrect raw material ratios or insufficient mixing time. By regularly testing flowability, companies can promptly identify these problems and take corrective measures, thereby ensuring that every batch of product meets consistent quality standards.

[0003] Meeting Product Specifications: Every water-based coating has specific flowability specifications during design and production. These requirements are determined based on the coating's intended use. For example, water-based automotive paints used for spraying require good flowability to form a uniform, smooth coating on automotive surfaces. Testing flowability ensures that the product meets these pre-defined specifications. Failure to meet flowability requirements can lead to quality issues such as uneven coating thickness and orange peel effect (uneven surface resembling orange peel), affecting the product's appearance and performance.

[0004] Optimizing construction process selection through performance evaluation: Different construction methods (such as brushing, rolling, and spraying) have different requirements for paint flowability. For example, brushing requires good leveling properties, meaning the paint should quickly flow and cover brush marks after being brushed. Testing the flowability of water-based paints can help construction workers choose the most suitable construction process. If the paint flowability is too poor, rolling may be more suitable than brushing because rolling can apply greater pressure, promoting better paint spread. Conversely, if the paint flowability is very good, spraying may be a more efficient construction method.

[0005] Existing devices for testing the flowability of water-based coatings mostly rely on inclined flow to perform the test, which has limited functionality and the test results are not intuitive enough. Therefore, we propose a new device for testing the flowability of water-based coatings. Summary of the Invention

[0006] The purpose of this invention is to provide a water-based coating flowability testing device to solve the technical problem that the testing effect of existing water-based coating flowability testing devices is not intuitive enough.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a water-based coating flowability testing device, comprising a conveyor; a visual inspection device is provided at the output end of the conveyor; the input end of the conveyor is connected to a stepping lifting mechanism; a dual-mold coating mechanism is fixedly provided at the lifting end of the stepping lifting mechanism; the dual-mold coating mechanism includes a mounting base fixed to the lifting end of the stepping lifting mechanism; a rotating seat is rotatably provided on the mounting base via bearings; a servo locking mechanism for driving the rotating seat to rotate is provided on the mounting base; an axial adjustment mechanism is provided on the mounting base; and a coating mechanism is inserted into the output end of the servo locking mechanism.

[0008] This invention uses a visual inspection device to magnify and photograph a test piece on which water-based coatings have been applied. By magnifying the image, the traces left after the application of the water-based coating are analyzed. By viewing the traces under magnification, the flow of the coating can be clearly and intuitively understood.

[0009] Preferably, the servo locking mechanism includes a servo motor arranged on the mounting base via a mounting seat, and a synchronous pulley A is provided at the output end of the servo motor; and a synchronous pulley B is provided at the input end of the rotating seat; and the synchronous pulley B is connected to the synchronous pulley A via a synchronous belt.

[0010] Preferably, the axial adjustment mechanism includes a push rod arranged on the mounting base via a mounting seat; a connecting seat is fixedly provided at the end of the push rod, and a connecting key shaft is rotatably provided on the connecting seat relative to the axial center of the rotating seat; the connecting key shaft is key-connected to the rotating seat, and the end of the connecting key shaft is provided with an adjustment end with a diameter larger than the diameter of the connecting key shaft; a compression protrusion is elastically connected to the radial position of the adjustment end by a spring.

[0011] Preferably, the application mechanism includes a roller brush housing inserted into the output end of the rotating seat; the outer wall of the middle section of the roller brush housing is provided with a roller brush layer A in an arc-shaped structure; at least two connecting support arc plates are provided on the other side of the roller brush housing opposite to the roller brush layer A; wherein the diameter of the connecting support arc plate is smaller than the diameter of the roller brush housing; and two adjacent connecting support arc plates are fixedly connected by connecting arc blocks, and the diameter of the connecting arc blocks is smaller than the diameter of the connecting support arc plates; and the arc length of the connecting arc blocks is smaller than the arc length of the connecting support arc plates; and the gap between the connecting support arc plates and the roller brush housing at the end of the roller brush layer A forms an arc-shaped through notch.

[0012] Preferably, the coating mechanism further includes planetary carriers fixed to both ends of the roller brush housing; a central gear is rotatably arranged inside the planetary carrier, and two central gears are connected by an adjusting sleeve; at least one planetary gear is rotatably arranged on the planetary carrier, and two axially arranged planetary gears are connected by a drive connecting shaft; wherein, an output adjusting gear is arranged on the drive connecting shaft relative to the position of the connecting arc block.

[0013] Preferably, the coating mechanism further includes an adjusting sleeve disposed on the outer surface of the connecting support arc plate, and the inner wall of the adjusting sleeve is provided with a toothed groove relative to the output adjusting gear; and a roller brush layer B is disposed on one side of the outer surface of the adjusting sleeve; and a bristle layer is disposed on the other side of the outer surface of the adjusting sleeve.

[0014] Preferably, the inner wall of the adjusting sleeve is provided with at least two spiral grooves in a centrally symmetrical manner, and the two spiral grooves are connected by a linear groove, and the groove depth at the input end of the spiral groove and the linear groove is less than the groove depth at the output end of the spiral groove and the linear groove; wherein, there is a drop at the connection between the spiral groove and the linear groove.

[0015] Preferably, the push rod reciprocates during the return stroke, causing the extrusion protrusion to slide along the spiral groove and the linear groove, causing the adjusting sleeve to drive the central gear to rotate, causing the planetary gear to rotate synchronously and drive the roller brush layer B on the outer surface of the adjusting sleeve to overlap and adhere to the outer surface of the connecting support arc plate, so that the roller brush layer B and the roller brush layer A form a circumferential roller structure.

[0016] Preferably, the push rod reciprocates during its return stroke, causing the extrusion protrusion to slide along the spiral groove and linear groove. This causes the adjusting sleeve to drive the central gear to rotate, which in turn causes the planetary gear to rotate synchronously, exposing the brush layer on the outer surface of the adjusting sleeve. At this time, the extrusion protrusion approaches the sliding output end of the spiral groove and is driven in the opposite direction by the push rod to slide from the sliding output end of the spiral groove to the input end of the spiral groove. The brush layer is then extruded through an arc-shaped notch, causing the brush layer adhering to the outer surface of the adjusting sleeve to be extruded to form a brush structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a visual inspection device to magnify and photograph the test piece after water-based coating is applied. By magnifying the display, the traces left after the application of water-based coating are analyzed. By magnifying and viewing the traces, the flow of the coating surface can be clearly and intuitively understood.

[0018] 2. This invention uses a servo motor to drive and self-lock the rotating seat and coating mechanism via synchronous belt A and synchronous belt B to perform either a rotary roller brush operation or a positioning and braking brush operation. This is to adapt to the different fluidity effects produced by water-based paints with different fluidity levels that are compatible with two conventional tools.

[0019] 3. This invention drives the adjustment component in the coating mechanism to move by pushing the push rod back during its stroke. This enables the necessary operation of adjusting the water-based paint to achieve different flow effects after application, whether by roller or brush. At the same time, the synchronous rotation of the servo locking mechanism is achieved by the rotational setting of the connecting key shaft and the connecting seat. The push rod follows the rotation at different stroke positions, effectively optimizing the simplicity of the structure.

[0020] 4. This invention uses two adjacent connecting support arc plates fixedly connected by connecting arc blocks, with the diameter of the connecting arc blocks being smaller than the diameter of the connecting support arc plates; and the arc length of the connecting arc blocks being smaller than the arc length of the connecting support arc plates. While ensuring the passage of the adjustment sleeve, this invention effectively supports the shape of the adjustment sleeve exposed to the outside, reducing the degree of fit of the adjustment sleeve and effectively simulating the effect of water-based paint covering brush marks after conventional roller brushing.

[0021] 5. This invention uses an axial adjustment mechanism to drive the adjustment sleeve and the central gear to rotate independently during the return stroke. The rotating central gear drives the planetary gear to rotate, and the output adjustment gear, along with the rotating drive shaft, uses the output adjustment gear to rotate and adjust the adjustment sleeve, forming the required roller-type and brush-type adjustment. This method effectively simulates two different brushing tools and realizes the actual experiment of different fluidity conditions after applying water-based paints with different fluidity through brushing simulation, effectively improving the functionality of this intuitive fluidity detection device.

[0022] 6. By setting the depth of the spiral groove and the linear groove input end to be less than the depth of the spiral groove and the linear groove output end, and by setting a drop at the connection between the spiral groove and the linear groove, the axial adjustment mechanism maintains unidirectional rotation of the adjusting sleeve during the return stroke of a sufficient distance, thus avoiding motion interference. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the dual-mode coating mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the servo locking mechanism and axial adjustment mechanism of the present invention; Figure 4This is a schematic diagram of the installation structure of the rotating seat and the coating mechanism of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the three-dimensional disassembled structure of the coating mechanism of the present invention; Figure 7 This is a front view schematic diagram of the internal structure of the application mechanism of the present invention; Figure 8 This is a schematic diagram of the internal cross-sectional structure of the adjusting sleeve of the present invention; Figure 9 This is a schematic diagram of the spiral groove and linear groove drop structure of the present invention.

[0024] Explanation of the labels in the diagram: 1. Conveyor; 2. Vision inspection device; 3. Stepping lifting mechanism; 4. Dual-mold coating mechanism; 5. Mounting base; 6. Rotating seat; 7. Servo locking mechanism; 8. Axial adjustment mechanism; 9. Coating mechanism; 601. Synchronous pulley B; 701. Servo motor; 702. Synchronous pulley A; 801, push rod; 8011, connecting seat; 802, connecting key shaft; 8021, adjusting end; 803, extrusion protrusion; 901. Brush housing; 9011. Brush layer A; 902. Connecting support arc plate; 9021. Connecting arc block; 903. Planetary carrier; 904. Central gear; 905. Adjusting sleeve; 9051. Spiral groove; 9052. Linear groove; 906. Planetary gear; 9061. Drive connecting shaft; 907. Output adjusting gear; 908. Adjusting sleeve; 9081. Tooth groove; 9082. Brush layer B; 9083. Brush layer. Detailed Implementation

[0025] like Figures 1 to 9As shown, this invention relates to a water-based coating flowability testing device, comprising a conveyor 1; a visual inspection device 2 is installed at the output end of the conveyor 1; a stepping lifting mechanism 3 is connected to the input end of the conveyor 1; a dual-mold coating mechanism 4 is fixedly installed at the lifting end of the stepping lifting mechanism 3; the dual-mold coating mechanism 4 includes a mounting base 5 fixed to the lifting end of the stepping lifting mechanism 3; a rotating seat 6 is rotatably mounted on the mounting base 5 via bearings; a servo locking mechanism 7 for driving the rotating seat 6 to rotate is installed on the mounting base 5; an axial adjustment mechanism 8 is installed on the mounting base 5; and a coating mechanism 9 is plugged into the output end of the servo locking mechanism 7. This invention uses the visual inspection device 2 to magnify and photograph a test piece of water-based coating, and analyzes the traces left after the application of the water-based coating layer through magnified display. By magnifying and viewing the traces, a clear and intuitive understanding of the flowability of the coating surface can be obtained.

[0026] In an embodiment of the present invention, the servo locking mechanism 7 includes a servo motor 701 arranged on the mounting base 5 via a mounting seat, and a synchronous pulley A702 is provided at the output end of the servo motor 701; and a synchronous pulley B601 is provided at the input end of the rotating seat 6; and the synchronous pulley B601 is connected to the synchronous pulley A702 via a synchronous belt. The present invention achieves a rotary brush operation or a positioning braking brush operation by driving the rotating seat 6 and the coating mechanism 9 via the synchronous belt of the synchronous pulley A702 and the synchronous pulley B601 through the servo motor 701 and its self-locking operation. This is adapted to the different flow effects produced after applying water-based paints with different flowability to two conventional tools.

[0027] In an embodiment of the present invention, the axial adjustment mechanism 8 includes a push rod 801 arranged on the mounting base 5 via a mounting seat; a connecting seat 8011 is fixedly provided at the end of the push rod 801, and a connecting key shaft 802 is rotatably provided on the connecting seat 8011 relative to the axial center of the rotating seat 6; the connecting key shaft 802 is key-connected to the rotating seat 6, and an adjustment end 8021 with a diameter larger than the diameter of the connecting key shaft 802 is provided at the end of the connecting key shaft 802; a pressing protrusion 803 is elastically connected to the radial position of the adjustment end 8021 via a spring. The present invention drives the dispensing component in the coating mechanism 9 to move through the push rod 801's return stroke, achieving the necessary operation to adjust the water-based coating to different fluidity effects by using a roller or brush, and simultaneously achieving synchronous rotation of the servo locking mechanism 7 during the driving process based on the rotational arrangement of the connecting key shaft 802 and the connecting seat 8011, keeping the push rod 801 rotating at different return stroke positions, effectively optimizing structural simplicity.

[0028] In an embodiment of the present invention, the application mechanism 9 includes a roller brush housing 901 inserted into the output end of the rotating seat 6; the outer wall of the middle end of the roller brush housing 901 is provided with a roller brush layer A9011 in an arc-shaped structure; at least two connecting support arc plates 902 are provided on the other side of the roller brush housing 901 opposite to the roller brush layer A9011; wherein, the diameter of the connecting support arc plate 902 is smaller than the diameter of the roller brush housing 901; and, two adjacent connecting support arc plates 902 are fixedly connected by connecting arc blocks 9021, and the diameter of the connecting arc blocks 9021 is smaller than the diameter of the connecting support arc plates 902; and, the arc length of the connecting arc blocks 9021 is smaller than the arc length of the connecting support arc plates 902; and, the gap between the connecting support arc plates 902 and the roller brush housing 901 at the end of the roller brush layer A9011 forms an arc-shaped through notch. This invention uses two adjacent connecting support arc plates 902 fixedly connected by connecting arc blocks 9021, with the diameter of the connecting arc blocks 9021 being smaller than the diameter of the connecting support arc plates 902; and the arc length of the connecting arc blocks 9021 being smaller than the arc length of the connecting support arc plates 902. While ensuring the passage of the adjusting sleeve 908, this effectively supports the shape of the adjusting sleeve 908 exposed to the outside, reducing the degree of fit of the adjusting sleeve 908 and effectively simulating the effect of water-based paint covering brush marks after conventional roller brushing.

[0029] In an embodiment of the present invention, the coating mechanism 9 further includes a planetary carrier 903 fixed to both ends of the roller brush housing 901; a central gear 904 is rotatably disposed inside the planetary carrier 903, and the two central gears 904 are connected by an adjusting sleeve 905; at least one planetary gear 906 is rotatably disposed on the planetary carrier 903, and the two axially arranged planetary gears 906 are connected by a drive connecting shaft 9061; wherein, an output adjusting gear 907 is disposed on the drive connecting shaft 9061 relative to the position of the connecting arc block 9021. This invention utilizes an axial adjustment mechanism 8 to drive the adjustment sleeve 905 and the central gear 904 to rotate independently during the return stroke. The rotating central gear 904 drives the planetary gear 906 to rotate, and the rotating drive connecting shaft 9061, along with the output adjustment gear 907, adjusts the adjustment sleeve 908 to achieve the desired roller-type and brush-type adjustment. This method effectively simulates two different brushing tools and conducts actual experiments on the different flow characteristics of water-based paints with different flowability after application, effectively improving the functionality of this intuitive flowability testing device.

[0030] In an embodiment of the present invention, the applicator 9 further includes an adjusting sleeve 908 disposed on the outer surface of the connecting support arc plate 902, and the inner wall of the adjusting sleeve 908 is provided with a tooth groove 9081 relative to the output adjusting gear 907; and a roller brush layer B9082 is disposed on one side of the outer surface of the adjusting sleeve 908; and a bristle brush layer 9083 is disposed on the other side of the outer surface of the adjusting sleeve 908.

[0031] In an embodiment of the present invention, at least two spiral grooves 9051 are centrally symmetrically formed on the inner wall of the adjusting sleeve 905, and the two spiral grooves 9051 are connected by a linear groove 9052. The depth of the input ends of the spiral grooves 9051 and 9052 is less than the depth of the output ends of the spiral grooves 9051 and 9052; and there is a height difference at the connection between the spiral grooves 9051 and 9052. By setting the depth of the input ends of the spiral grooves 9051 and 9052 to be less than the depth of the output ends of the spiral grooves 9051 and 9052, and by setting there is a height difference at the connection between the spiral grooves 9051 and 9052, the present invention ensures that the adjusting sleeve 905 maintains unidirectional rotation during the sufficient distance of the return stroke of the axial adjusting mechanism 8, thus avoiding motion interference.

[0032] In an embodiment of the present invention, the push rod 801 reciprocates during the return stroke, causing the extrusion protrusion 803 to slide along the spiral groove 9051 and the linear groove 9052, causing the adjusting sleeve 905 to drive the central gear 904 to rotate, causing the planetary gear 906 to rotate synchronously and drive the roller brush layer B9082 on the outer surface of the adjusting sleeve 908 to overlap and adhere to the outer surface of the connecting support arc plate 902, so that the roller brush layer B9082 and the roller brush layer A9011 form a circumferential roller structure.

[0033] In an embodiment of the present invention, the push rod 801 reciprocates during its return stroke, causing the extrusion protrusion 803 to slide along the spiral groove 9051 and the linear groove 9052. This causes the adjusting sleeve 905 to drive the central gear 904 to rotate, which in turn causes the planetary gear 906 to rotate synchronously, exposing the brush layer 9083 on the outer surface of the adjusting sleeve 908. At this time, the extrusion protrusion 803 approaches the sliding output end of the spiral groove 9051 and is driven in the opposite direction by the push rod 801 to slide along the path near the sliding output end of the spiral groove 9051 to the path near the input end of the spiral groove 9051. The brush layer 9083 is then extruded through the arc-shaped notch, causing the brush layer 9083 adhering to the outer surface of the adjusting sleeve 908 to be extruded to form a brush structure.

[0034] Working principle: This embodiment provides a water-based coating flowability testing device. Usage steps: S100, Magnetic feeding process: A magnetic metal sheet or a metal sheet with a magnetic bottom is coated and magnetically attached to the metal conveyor belt of conveyor 1. S200, First-level adjustment process: The push rod 801 reciprocates during the return stroke, causing the extrusion protrusion 803 to slide along the spiral groove 9051 and the linear groove 9052, causing the adjusting sleeve 905 to drive the central gear 904 to rotate, causing the planetary gear 906 to rotate synchronously and drive the roller brush layer B9082 of the adjusting sleeve 908 to overlap and adhere to the outer surface of the connecting support arc plate 902, so that the roller brush layer B9082 and the roller brush layer A9011 form a near-circular structure; S300, Level 1 Coating Treatment: Water-based paint is evenly poured onto roller brush layer B9082 and roller brush layer A9011 by manual or mechanical means; S400, First-level coating process: The servo motor 701 drives the synchronous pulley A702 to drive the synchronous belt, synchronous pulley B601, rotating seat 6 and coating mechanism 9 to rotate as a whole. The carrier is transported to the bottom of the coating mechanism 9 by the conveyor 1. Then, the water-based coating is applied to the surface of the carrier by the rotating coating mechanism 9 and transported to the bottom of the vision inspection device 2 for magnification and photography. S500, Secondary Adjustment Process: Repeated feeding and placement of the carrier plate, the push rod 801 reciprocates during the return stroke, causing the extrusion protrusion 803 to slide along the spiral groove 9051 and the linear groove 9052, causing the adjusting sleeve 905 to drive the central gear 904 to rotate, causing the planetary gear 906 to rotate synchronously and drive the brush layer 9083 of the adjusting sleeve 908 to be exposed. At this time, the extrusion protrusion 803 approaches the sliding output end of the spiral groove 9051, and is driven in the opposite direction by the push rod 801 to slide along the sliding output end of the spiral groove 9051 to the input end of the spiral groove 9051. The brush layer 9083 is extruded on one side through the arc-shaped notch, causing the brush layer 9083 to adhere to the outer surface of the adjusting sleeve 908, forming a brush structure similar to the conventional brush structure. S600, Secondary Coating Treatment: Water-based paint is evenly poured onto the brush layer 9083 by manual or mechanical means; S700, Secondary coating process: The servo motor 701 drives the synchronous pulley A702 to drive the synchronous belt, synchronous pulley B601, rotating seat 6 and coating mechanism 9 to rotate as a whole. Adjust the brush layer 9083 to face down or tilt, then the servo motor 701 locks, and then the carrier is transported to the bottom of the coating mechanism 9 by the conveyor 1. Then the rotating coating mechanism 9 applies water-based paint to the surface of the carrier and transports it to the bottom of the vision inspection device 2 for magnification and photography. S800, Testing and Processing: By comparing the smoothness and evenness of the coating after two different applications in the photos, the fluidity of the water-based paint can be determined. S900 Cleaning: Disassemble the adjustment sleeve 908 for cleaning.

[0035] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A device for testing the flowability of water-based coatings, characterized in that, Includes a conveyor (1); the output end of the conveyor (1) is equipped with a visual inspection device (2); the input end of the conveyor (1) is connected to a stepping lifting mechanism (3); the lifting end of the stepping lifting mechanism (3) is fixedly equipped with a dual-mold coating mechanism (4); The dual-mode coating mechanism (4) includes a mounting base (5) fixed to the lifting end of the stepping lifting mechanism (3); a rotating seat (6) is rotatably mounted on the mounting base (5) via a bearing. The mounting base (5) is provided with a servo locking mechanism (7) for driving the rotating seat (6) to rotate; the mounting base (5) is provided with an axial adjustment mechanism (8); the output end of the servo locking mechanism (7) is connected to a coating mechanism (9). The axial adjustment mechanism (8) includes a push rod (801) arranged on the mounting base (5) via a mounting seat; a connecting seat (8011) is fixedly provided at the end of the push rod (801), and a connecting key shaft (802) is rotatably provided on the connecting seat (8011) relative to the axial center position of the rotating seat (6). The connecting key shaft (802) is keyed to the rotating seat (6). Furthermore, the end of the connecting key shaft (802) is provided with an adjustment end (8021) with a diameter larger than that of the connecting key shaft (802). The adjustment end (8021) is radially connected to a compression protrusion (803) via a spring. The coating mechanism (9) includes a roller brush housing (901) inserted into the output end of the rotating seat (6); the outer wall of the middle end of the roller brush housing (901) is provided with a roller brush layer A (9011) in an arc-shaped structure; at least two connecting support arc plates (902) are provided on the other side of the roller brush housing (901) opposite to the roller brush layer A (9011). Wherein, the diameter of the connecting support arc plate (902) is smaller than the diameter of the roller brush housing (901); and, two adjacent connecting support arc plates (902) are fixedly connected by connecting arc blocks (9021), and the diameter of the connecting arc blocks (9021) is smaller than the diameter of the connecting support arc plates (902). Furthermore, the arc length of the connecting arc block (9021) is less than the arc length of the connecting support arc plate (902); Furthermore, the gap between the connecting support arc plate (902) and the end of the roller brush housing (901) of the roller brush layer A (9011) forms an arc-shaped through notch; The coating mechanism (9) also includes planetary carriers (903) fixed to both ends of the roller brush housing (901); a central gear (904) is rotatably arranged inside the planetary carrier (903), and the two central gears (904) are connected by an adjusting sleeve (905). At least one planetary gear (906) is rotatably mounted on the planet carrier (903), and the two axially arranged planetary gears (906) are connected by a drive connecting shaft (9061). The drive connecting shaft (9061) is provided with an output adjusting gear (907) relative to the connecting arc block (9021). The coating mechanism (9) further includes an adjustment sleeve (908) disposed on the outer surface of the connecting support arc plate (902), and the inner wall of the adjustment sleeve (908) is provided with a tooth groove (9081) relative to the output adjustment gear (907). Furthermore, a roller brush layer B (9082) is provided on one side of the outer surface of the adjustment sleeve (908). Furthermore, a brush layer (9083) is provided on the other side of the outer surface of the adjustment sleeve (908). The inner wall of the adjusting sleeve (905) is provided with at least two spiral grooves (9051) in a centrally symmetrical manner, and the two spiral grooves (9051) are connected by a linear groove (9052). The groove depth at the input end of the spiral groove (9051) and the linear groove (9052) is less than the groove depth at the output end of the spiral groove (9051) and the linear groove (9052). There is a drop at the connection between the spiral groove (9051) and the linear groove (9052).

2. The water-based coating flowability testing device according to claim 1, characterized in that, The servo locking mechanism (7) includes a servo motor (701) arranged on the mounting base (5) via a mounting seat, and a synchronous pulley A (702) is provided at the output end of the servo motor (701). Furthermore, the input end of the rotating seat (6) is provided with a synchronous wheel B (601); and the synchronous wheel B (601) is connected to the synchronous wheel A (702) via a synchronous belt.

3. The water-based coating flowability testing device according to claim 2, characterized in that, The push rod (801) reciprocates during the return stroke, causing the extrusion protrusion (803) to slide along the spiral groove (9051) and the linear groove (9052), causing the adjusting sleeve (905) to drive the central gear (904) to rotate, causing the planetary gear (906) to rotate synchronously and drive the roller brush layer B (9082) on the outer surface of the adjusting sleeve (908) to overlap and adhere to the outer surface of the connecting support arc plate (902), so that the roller brush layer B (9082) and the roller brush layer A (9011) form a circumferential roller structure.

4. The water-based coating flowability testing device according to claim 3, characterized in that, The push rod (801) reciprocates during its return stroke, causing the extrusion protrusion (803) to slide along the spiral groove (9051) and the linear groove (9052). This causes the adjusting sleeve (905) to drive the central gear (904) to rotate, causing the planetary gear (906) to rotate synchronously and expose the brush layer (9083) on the outer surface of the adjusting sleeve (908). At this time, the extrusion protrusion (803) approaches the sliding output end of the spiral groove (9051) and is driven in the opposite direction by the push rod (801) to slide along the sliding output end of the spiral groove (9051) to the input end of the spiral groove (9051). The brush layer (9083) is squeezed on one side through the arc-shaped notch, causing the brush layer (9083) that is attached to the outer surface of the adjusting sleeve (908) to be squeezed to form a brush structure.

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