A device and method for detecting the heat absorption performance of a sand belt

Abstract

The application relates to a sand belt heat absorption performance detection device and a detection method, and relates to the technical field of sand belt performance detection. The device comprises a workbench and a polishing device arranged on the workbench. The workbench is provided with a polishing assembly for sand belt polishing and a detection assembly for detecting the surface of the polished sand belt. The polishing assembly comprises a fixed frame slidingly arranged on the workbench. A pressing plate is arranged through the fixed frame. A fixed roller is rotatably arranged on the pressing plate. A movable pressing polishing block is detachably arranged on the outer circumferential wall of the fixed roller. The workbench is provided with a swinging member for swinging the polishing block, a driving member for driving the fixed roller to periodically slide along the sand belt working surface, a heating member for heating the polishing block, and a second power member for driving the fixed frame to slide. The application has the effects of improving the sand belt energy absorption performance detection efficiency, improving the intuitiveness and representativeness of the detection results, and the like.

Description

Technical Field

[0001] This application relates to the technical field of sanding belt performance testing, and in particular to a device and method for testing the heat absorption performance of sanding belts. Background Technology

[0002] Abrasive belts are flexible tools with densely packed abrasive particles, combining efficient grinding and precision polishing capabilities. They enable rapid machining of large areas and processing of complex curved surfaces. Due to their cold-grinding characteristics, they have a low risk of thermal damage to workpieces and high machining accuracy.

[0003] Due to differences in the curing process of the adhesive, the uniformity of the embedded abrasive, and even the production batches, the heat absorption performance of abrasive belts varies greatly. Abrasive belts with poor heat absorption performance are not able to effectively absorb and dissipate the heat generated by friction, which can lead to burns or even thermal stress deformation on the workpiece surface, especially when processing thin-walled parts or heat-sensitive materials, such as titanium and its alloys. Therefore, it is particularly important to test the heat absorption performance of abrasive belts after production. Common testing methods are as follows: technicians install the abrasive belt on the grinding equipment and grind the test workpiece. Then, they use an infrared thermal imager to photograph the grinding area and measure the temperature distribution of the entire grinding area. Alternatively, thermocouples can be implanted at designated locations on the test workpiece. When the grinding depth of the workpiece reaches a specified depth, the heat generated by grinding is transferred to the thermocouple, converting the thermal signal into an electrical signal, thereby measuring the temperature change of the abrasive belt during actual operation and realizing the detection of the heat absorption performance of the abrasive belt. For example, a Chinese patent document with publication number CN102269678B discloses a wet multi-plate clutch friction steel plate temperature detection test device. The piston pushes the friction steel plate against the friction plate through the oil circuit system. The test conditions of the clutch are set by frequency conversion speed regulation, the inertia combination of the inertia flywheel, and the control of the clutch lubricating oil temperature. Temperature sensors are arranged in the circumferential and axial directions to test the temperature distribution of the wet multi-plate clutch friction in the circumferential and axial directions.

[0004] Regarding the aforementioned technologies, when measuring the temperature of abrasive belts, infrared thermal imagers are prone to interference from grinding debris and dust generated in the grinding area, leading to significant measurement errors. Furthermore, the process of embedding thermocouples and grinding the test workpiece is technically challenging and time-consuming, making it unsuitable for large-scale batch sampling in actual production. Additionally, these methods only reflect surface temperature changes of the abrasive belt. Specifically, when the upper limit of the abrasive belt's operating temperature meets the workpiece's processing requirements, it's difficult to determine whether the adhesive has aged at this temperature, causing abrasive detachment or passivation. This makes it difficult to directly demonstrate the impact of heat absorption on the belt's performance, resulting in insufficient representativeness of the test results. Therefore, improvements are needed. Summary of the Invention

[0005] In order to improve the detection efficiency of the energy absorption performance of abrasive belts and enhance the intuitiveness and representativeness of the test results, this application provides a device for testing the heat absorption performance of abrasive belts.

[0006] The technical solution of the abrasive belt heat absorption performance testing device provided in this application is as follows:

[0007] A device and method for testing the heat absorption performance of abrasive belts include a workbench and a grinding device disposed on the workbench. The grinding device includes a drive wheel, a tension wheel, two support wheels, and a first power component for driving the drive wheel to rotate, all rotatably disposed on the workbench. The two support wheels are arranged at intervals in a vertical direction. The abrasive belt is wound around the drive wheel, the tension wheel, and the support wheels and is connected to the drive wheel, the tension wheel, and the support wheels in a transmission connection. The workbench is provided with a grinding component for grinding the abrasive belt and a testing component for testing the surface of the ground abrasive belt.

[0008] The grinding assembly includes a fixed frame slidably mounted on a worktable, a clamping plate passing through the fixed frame, a fixed roller rotatably mounted on the clamping plate, the fixed roller being located between the fixed frame and the support rollers, the rotation axis of the fixed roller being parallel to that of the support rollers, a grinding block being detachably mounted on the outer peripheral wall of the fixed roller, the grinding block being located between the two support rollers and being movably pressed against the sanding belt, and the worktable being provided with a swinging component for swinging the grinding block, a driving component for driving the fixed roller to slide periodically along the working surface of the sanding belt, a heating component for heating the grinding block, and a second power component for driving the fixed frame to slide.

[0009] The detection assembly includes a video detection module and a blue LED light mounted on the workbench. Both the video detection module and the blue LED light are positioned facing the sanding belt. A mounting block is detachably mounted on the outer peripheral wall of the fixed roller. The mounting block corresponds to the sanding belt. The mounting block is coated with a solid block-shaped reinforcing coating. Under blue light irradiation, the reinforcing coating can emit light with a wider wavelength. The reinforcing coating is in contact with the sanding belt. A switching assembly for rotating the fixed roller is provided on the workbench.

[0010] By adopting the above technical solution, when it is necessary to test the heat absorption performance of the sanding belt, the technician will loosen the tension wheel, and then the technician will wrap the sanding belt to be tested around the drive wheel, tension wheel and support wheel, and then tighten the tension wheel.

[0011] Then, the technicians start the grinding equipment, activating the first power component and driving the drive wheel to rotate, thus driving the sanding belt. The second power component then drives the fixed frame and the clamping plate to slide, bringing the fixed roller closer to the sanding belt until the grinding block is pressed against the working surface of the sanding belt, simulating the sanding belt grinding process. Then, the oscillating component drives the grinding block to oscillate back and forth, while the driving component drives the fixed roller and the grinding block to slide along the working surface of the sanding belt, simulating different working conditions of the actual sanding belt grinding process. This reflects the performance of the sanding belt in actual use, improves the reliability of subsequent test results, reduces the labor intensity of technicians, and increases testing efficiency.

[0012] When the sanding belt is working, the heating element heats the grinding block, reducing the time required for the sanding belt to reach the design temperature during testing, reducing the testing cycle for a single sanding belt, and further improving testing efficiency.

[0013] After the grinding process is completed, the second power component drives the fixed frame to slide, causing the fixed roller and grinding block to move away from the sanding belt until the fixed frame moves to the initial position. Then, the fixed roller rotates through the switching component until the mounting block corresponds to the sanding belt. Then, the second power component drives the fixed frame to slide, causing the fixed roller to slide closer to the sanding belt until the reinforcing coating is pressed against the working surface of the sanding belt, so as to achieve uniform coating of the reinforcing coating on the surface of the sanding belt. At the same time, the first power component reduces the speed of the drive wheel to improve the coating effect. Since the abrasive of the sanding belt is adhered to the substrate by the adhesive, the gap between the abrasive particles forms a chip space, and the abrasive particles are protruding parts, so that the reinforcing coating mainly acts on the abrasive particles.

[0014] At this point, the video detection module takes a picture of the abrasive belt surface. Due to the blue LED illumination, the reinforcing coating emits a wider wavelength of light under blue light, enhancing the contrast between the abrasive and the chip space, thus improving the detection effect of the video detection module. By analyzing the area of ​​different highlight points in the image, the sharpness of the working end of the abrasive can be determined, thereby judging the abrasive passivation status. At the same time, the video detection module can analyze the image to determine the density and uniformity of the abrasive, thereby judging the abrasive shedding status. This leads to the determination of the adhesive performance and the degree of abrasive wear when the set temperature is reached, enabling the detection of the heat absorption performance of the abrasive belt and improving the intuitiveness and representativeness of the detection results.

[0015] Optionally, the driving component includes a driving frame slidably disposed on the inner wall of the fixed frame, a driving gear rotatably disposed on the fixed frame, an internal gear ring of a regular square shape disposed on the inner side wall of the driving frame, the driving gear meshing with the internal gear ring, a clamping plate elastically slidably connected to the driving frame, a pressure sensor disposed between the output end of the second power component and the fixed frame, a controller and an infrared temperature sensor disposed on the worktable, the infrared temperature sensor being disposed facing the connection between the sanding belt working surface and the grinding block, the pressure sensor, the infrared temperature sensor, the first power component and the second power component being electrically connected to the controller, and a transmission assembly for driving the driving gear to rotate disposed on the worktable.

[0016] By adopting the above technical solution, when the second power component is working, it drives the fixed frame to slide close to the sanding belt, so that the grinding block presses against the sanding belt, and the end of the pressing plate close to the fixed roller overcomes the elastic force and slides towards the fixed frame until the pressure sensor reaches the set pressure value and transmits the electrical signal to the controller. At this time, the controller stops the second power component from working, thereby simulating the pressure of the workpiece pressing against the sanding belt.

[0017] When the oscillating component drives the grinding block to oscillate, the elastically set clamping plate allows the grinding block to move away from the sanding belt and oscillate. At the same time, the transmission component drives the drive gear to rotate. Since the internal gear ring is a regular quadrilateral shape, the drive gear meshes with the four sides of the internal gear ring in sequence, thereby driving the internal gear ring and the drive frame to slide along the side of the fixed frame. This causes the movement trajectory of the grinding block to be a periodic movement of the regular quadrilateral corresponding to the internal gear ring, realizing the process of pressing the grinding block against the sanding belt and oscillating and sliding the grinding block up, down, left, and right.

[0018] When the infrared temperature sensor detects that the grinding area has reached the set temperature, the infrared temperature sensor transmits an electrical signal to the controller. At this time, the controller drives the second power component to work and moves the grinding block away from the sanding belt, which facilitates the subsequent inspection process and realizes the simulation of the grinding process and the automatic control of the grinding temperature.

[0019] Optionally, the swinging component includes a first one-way gear and a second one-way gear coaxially disposed on both sides of the fixed roller. The first one-way gear and the second one-way gear have opposite rotational directions. Two first racks and two second racks are slidably disposed on the abutting plate. The two first racks and the two second racks correspond one-to-one and are arranged opposite each other. The two first racks are respectively located on opposite sides of the first one-way gear and are movably meshed with the first one-way gear. The two second racks are respectively located on opposite sides of the second one-way gear and are meshed with the second one-way gear. The worktable is provided with a sliding assembly that drives the two first racks to slide closer / away from each other and the two second racks to slide closer / away from each other.

[0020] By adopting the above technical solution, after simulating sanding with a belt for flat grinding, the sliding component drives the two first racks to slide closer / away from each other and the two second racks to slide closer / away from each other. At this time, the first rack meshes with the first one-way gear, thereby driving the first one-way gear and the second one-way gear to rotate synchronously. Since the rotational directions of the first one-way gear and the second one-way gear are opposite, when the first one-way gear rotates, the second one-way gear idles. At this time, the first one-way gear drives the fixed roller to rotate, thereby causing the grinding block to deflect. When the first one-way gear reverses, the first one-way gear idles, and the second one-way gear drives the fixed roller to reverse, thereby achieving the reverse deflection of the grinding block. The periodic tension and reversal of the fixed roller achieves the periodic oscillation of the grinding block, so as to simulate the effect of sanding a beveled surface with a belt.

[0021] Optionally, the transmission assembly includes a universal joint coupling with axial compensation and a drive shaft rotatably mounted on the abutment plate. One end of the universal joint coupling is connected to the rotating shaft of the drive gear, and the other end of the universal joint coupling is connected to the drive shaft. A third power component for driving the drive shaft to rotate is provided on the abutment plate, and the third power component is electrically connected to the controller.

[0022] By adopting the above technical solution, after simulating the sanding belt for flat grinding, the controller drives the third power component to work, and at the same time, the swing component drives the grinding block to swing. At this time, the third power component drives the transmission shaft to rotate, and drives the drive gear to rotate through the universal joint coupling, thereby realizing the sliding of the grinding block along the sanding surface of the sanding belt. At the same time, due to the axial compensation of the universal joint coupling, when the drive frame and the clamping plate slide relative to the fixed frame, the third power component always drives the drive gear to rotate. The above complex action can be achieved with a single power source, and the structure is compact and the equipment is small in size.

[0023] Optionally, the sliding assembly includes a worm coaxially mounted on the transmission shaft and two worm wheels rotatably mounted on the abutment plate. The two worm wheels are arranged opposite to each other and both mesh with the worm. Both ends of the worm wheel shaft are provided with cranks. The two cranks on one worm wheel correspond one-to-one with a first rack and a second rack, respectively. The two cranks on the other worm wheel correspond one-to-one with the remaining first rack and second rack, respectively. A connecting rod is rotatably mounted on the crank. The end of the connecting rod away from the crank is rotatably connected to the first rack / second rack.

[0024] When the worm gear rotates, it drives the two worm gears to move in opposite directions, and drives the crank and connecting rod to rotate, thereby causing the first rack and the second rack to slide, and the two first racks and the two second racks slide closer to each other / away from each other.

[0025] By adopting the above technical solution, when the third power component drives the transmission shaft to rotate, it drives the worm gear to rotate, thereby driving the two worm wheels to rotate, which in turn drives the crank and connecting rod to rotate, thereby driving the first rack and the second rack to slide. Moreover, the two first racks and the two second racks slide closer to each other / away from each other, realizing the coordinated and synchronous operation of the grinding block swinging and the grinding block sliding along the sandpaper working surface through a single power source. Furthermore, the mechanical structure has strong load-bearing and impact resistance, improving the stability of equipment operation.

[0026] Optionally, a cleaning brush is detachably fixed on the outer peripheral wall of the fixed roller. The cleaning brush, the mounting block, and the grinding block are evenly distributed at intervals along the circumference of the fixed roller. The cleaning brush, the mounting block, and the grinding block are selectively and movably corresponding to the working surface of the sanding belt, and the cleaning brush is movably pressed against the sanding belt.

[0027] By adopting the above technical solution, after the simulated grinding is completed, the second power component drives the fixed frame to slide, so that the fixed roller and grinding block are away from the sanding belt until the fixed frame moves to the initial position. Then, the fixed roller is rotated by the switching component until the cleaning brush corresponds to the sanding belt. Then, when the second power component continues to work, it drives the fixed frame to slide closer to the sanding belt, so that the bristles of the cleaning brush slightly press against the sanding belt until the pressure sensor reaches a small set pressure value and transmits an electrical signal to the controller. At this time, the controller stops the second power component from working. As the sanding belt continues to rotate, it cleans the sanding debris, dust or detached abrasive particles floating in the chip space and on the surface of the abrasive. At the same time, the third power component works to realize the oscillation of the cleaning brush and its sliding along the working surface of the sanding belt, which improves the cleaning effect on the surface of the sanding belt, reduces the impact on the coating effect of the subsequent reinforcing coating and the detection results of the video detection module, and improves the accuracy of the detection results.

[0028] Optionally, it includes two guide frames slidably disposed on the abutment plate, two first racks respectively sliding through the two guide frames, and the inner sidewall of the guide frame is movably abutting against the sidewall of the first rack. The sliding direction of the guide frame is perpendicular to the sliding direction of the first rack. The connection between the fixed roller and the abutment plate is provided with damping. The abutment plate is provided with a fourth power component that drives the two guide frames to slide closer / away from each other. The fourth power component is electrically connected to the controller.

[0029] By adopting the above technical solution, after the second power component stops working, when it is necessary to switch the grinding block, cleaning brush, and mounting block, the controller drives the fourth power component to work, causing the two guide frames to slide away from each other, so that both first racks are separated from the first one-way gear. Then the controller drives the third power component to work, realizing the periodic sliding of the two second racks towards and away from each other, and realizing the stepping rotation of the fixed roller under the action of the second one-way gear. The damping set makes it difficult for the fixed roller to reverse during the intermittent period of stepping rotation, thereby realizing the switching of the grinding block, cleaning brush, and mounting block. The degree of automation is high and the detection efficiency is improved.

[0030] Meanwhile, the fixed roller's periodic forward and reverse rotation and stepping rotation use the same transmission structure and the same power source, reducing the cumulative error between multiple power sources working over a long period of time, as well as the dimensional error between multiple transmission structures. This reduces the risk of a large angular deviation between the end face of the mounting block and the working surface of the sand belt after long-term operation of the equipment, improves the uniformity of coating, and thus enhances the reliability of the test results.

[0031] On the other hand, this application provides a method for testing the heat absorption performance of abrasive belts, comprising the following steps:

[0032] S1. First, the technician loosens the tension wheel, and after wrapping the sanding belt to be tested around the drive wheel, tension wheel and support wheel, the technician tightens the tension wheel to complete the installation of the sanding belt.

[0033] S2, the technician starts the grinding equipment. The controller controls the first and second power components to work. The first power component drives the drive wheel to rotate, so that the sanding belt works. The second power component drives the fixed frame, drive frame, clamping plate, fixed roller and grinding block to slide in sequence, so that the grinding block presses against the sanding belt until the pressure sensor reaches the set pressure value. At the same time, the heater heats the grinding block to realize the working condition of sanding a surface with a sanding belt.

[0034] S3, the controller drives the third power component to work, and sequentially drives the transmission shaft, universal joint coupling and drive gear to rotate, so that the drive gear meshes with the four sides of the internal gear ring in sequence, so that the movement trajectory of the grinding block is a periodic movement of a regular square. At the same time, the transmission shaft sequentially drives the worm, worm wheel, crank and connecting rod to rotate, so that the first rack and the second rack slide and drive the first one-way gear and the second one-way gear to periodically rotate forward and reverse, so as to drive the fixed roller to rotate forward and reverse periodically, thereby driving the grinding block to swing, and thus realizing the working condition of sanding the inclined surface with a sanding belt;

[0035] S4, when the infrared temperature sensor detects that the design threshold has been reached, the simulated sanding belt grinding ends, the second power component completes one reciprocating motion, causing the grinding block to separate from the sanding belt. At the same time, by switching components, the cleaning brush is rotated to correspond with the sanding belt and the cleaning brush is pressed against the sanding belt to clean the impurities floating on the surface of the sanding belt.

[0036] S5, the second power component completes another reciprocating motion, causing the cleaning wheel to separate from the sanding belt. At the same time, by switching components, the mounting block is rotated to correspond with the sanding belt, and the reinforcing coating is pressed against the sanding belt, so as to uniformly coat the reinforcing coating on the surface of the sanding belt. Meanwhile, the video detection module takes pictures and analyzes the surface of the sanding belt to detect the heat absorption performance of the sanding belt.

[0037] S6, the second power unit operates, causing the fixed frame, drive frame, clamping plate and fixed roller to slide to the initial position. At the same time, the grinding block is rotated to the position corresponding to the sanding belt by the switching component. Then the technician removes the sanding belt and repeats the above steps.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. The second power component drives the fixed frame to slide closer to the sanding belt, causing the grinding block to press against the sanding belt, thus simulating the sanding belt grinding of a flat surface. When the third power component drives the transmission shaft to rotate, it drives the drive gear to rotate through the universal joint coupling, thereby causing the internal gear ring and the drive frame to slide along the side of the fixed frame. This causes the drive frame and the grinding block to slide periodically up, down, left, and right. At the same time, the transmission shaft drives the worm, worm wheel, crank, and connecting rod to rotate in sequence, thereby causing the first rack and the second rack to slide and the first one-way gear and the second one-way gear to rotate periodically in both directions. Since the first one-way gear and the second one-way gear can rotate in opposite directions, the grinding block can oscillate periodically, thus simulating the sanding belt grinding of an inclined surface. This simulates different working conditions of the actual sanding belt grinding process, thereby reflecting the performance of the sanding belt in actual use, improving the reliability of subsequent test results, reducing the labor intensity of technicians, and improving test efficiency.

[0040] 2. By switching components, the mounting block is aligned with the abrasive belt. A second power component brings the fixed roller closer to the abrasive belt, pressing the reinforcing coating against it. As the belt rotates, the reinforcing coating is evenly applied to its surface. Since the abrasive particles adhere to the substrate with an adhesive, the gaps between them create a chip-holding space, with the abrasive particles acting as protrusions. This allows the reinforcing coating to primarily act on the abrasive particles. A video detection module then photographs and analyzes the belt surface. Simultaneously, blue LED illumination enhances the contrast between the abrasive particles and the chip-holding space. Differences in the area of ​​bright and dark regions indicate the density and uniformity of the abrasive particles, thus assessing the extent of abrasive particle detachment. Furthermore, the area of ​​different highlight points reveals the sharpness of the abrasive's working end, indicating the degree of abrasive passivation. This process enables the detection of the abrasive belt's heat absorption performance and enhances the intuitiveness and representativeness of the test results.

[0041] 3. The oscillation of the grinding block and its sliding along the sandpaper working surface can be coordinated and synchronized through a single power source and mechanical structure. The mechanical structure has strong load and impact resistance, is compact, and has a small equipment size, saving power and improving the stability of equipment operation. At the same time, the periodic forward and reverse rotation of the fixed roller and the stepping rotation use the same transmission structure and the same power source, reducing the cumulative error between multiple power sources working over a long period of time, as well as the dimensional error between multiple sets of transmission structures. This reduces the risk of large angular deviations between the end face of the mounting block and the working surface of the sanding belt after long-term operation, improves the uniformity of the coating, and thus improves the reliability of the test results.

[0042] 4. Technicians can adjust the power of the heating element, replace the grinding blocks with different materials, and adjust the threshold values ​​of the infrared temperature sensor and pressure sensor to adapt to different working conditions and meet the testing requirements of different specifications and models of sanding belts. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0044] Figure 2 This is a schematic diagram of the connection structure of the infrared temperature sensor, the fixed roller, the cleaning brush and the worktable.

[0045] Figure 3 This is a schematic diagram of the connection structure of the drive frame, drive gear, and internal gear ring.

[0046] Figure 4 This is a schematic diagram showing the connection of the first one-way gear, the second one-way gear, the first rack, and the second rack.

[0047] Figure 5 It is a schematic diagram of the connection structure of the worm gear, worm, crank, connecting rod and clamping plate.

[0048] Reference numerals: 1. Worktable; 11. Grinding equipment; 12. First power component; 13. Controller; 14. Infrared temperature sensor; 15. Pressure sensor; 16. Drive wheel; 17. Tensioning wheel; 18. Support wheel; 2. Grinding assembly; 21. Fixed frame; 22. Pressing plate; 23. Fixed roller; 24. Grinding block; 25. Drive component; 251. Drive frame; 252. Drive gear; 253. Internal gear ring; 254. Guide block; 255. Guide groove; 256. Guide opening; 26. Swinging component; 261. First one-way gear; 262. Second one-way gear; 263. First rack; 264. Second rack; 27. Heating element; 28. Second power element; 29. ​​Cleaning brush; 3. Detection assembly; 31. Video detection module; 32. Blue LED light; 33. Mounting block; 34. Reinforcing coating; 4. Transmission assembly; 41. Drive shaft; 42. Universal joint coupling; 43. Third power element; 5. Sliding assembly; 51. Worm gear; 52. Worm; 53. Crank; 54. Connecting rod; 6. Switching assembly; 61. Guide frame; 62. Fourth power element; 7. Sanding belt. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0050] This application discloses a device for testing the heat absorption performance of abrasive belts. (Refer to...) Figure 1A device for testing the heat absorption performance of abrasive belts includes a workbench 1 placed horizontally on the ground and a grinding device 11 fixed to the top of the workbench 1. The grinding device 11 includes a drive wheel 16, a tension wheel 17, two support wheels 18 rotatably connected to the workbench 1, and a first power component 12 that drives the drive wheel 16 to rotate. In this application, the first power component 12 is a rotating motor. The two support wheels 18 are arranged at intervals along the height direction of the workbench 1. The abrasive belt 7 is wound around the drive wheel 16, the tension wheel 17, and the support wheels 18, and is connected to the drive wheel 16, the tension wheel 17, and the support wheels 18 in a transmission connection. The rotation axes of the drive wheel 16, the tension wheel 17, and the support wheels 18 are all consistent with the width direction of the workbench 1.

[0051] To facilitate the testing of the heat absorption performance of the sanding belt 7, a grinding assembly 2 is installed on the worktable 1, as shown in the reference. Figure 1 and Figure 2 The detection component 3 includes a video detection module 31 and a blue LED light 32 fixed on the workbench 1. Both the video detection module 31 and the blue LED light 32 are arranged facing the sanding belt 7 and are located between the tension wheel 17 and the drive wheel 16. A solid block-shaped reinforcing coating 34 is fixed on the end face of the mounting block 33. In this application, the reinforcing coating 34 is an optical brightness enhancing coating 34. In this application, the reinforcing coating 34 is a mixture of phosphor, wax and binder. The reinforcing coating 34 can excite a wider wavelength of light under blue light irradiation. In order to improve the irradiation effect of the blue LED light 32, two blue LED lights 32 are provided and are located on the two sides of the video detection module 31 respectively. In this application, the shooting unit of the video detection module 31 is an industrial camera equipped with a bandpass filter. A switching component 6 that drives the fixed roller 23 to rotate is provided on the workbench 1.

[0052] To simulate the sanding process of belt abrasive 7, a sanding assembly 2 is installed on the worktable 1, as shown in the reference... Figure 1 and Figure 2 The grinding assembly 2 includes a fixed frame 21 slidably disposed on the worktable 1. A retaining plate 22 is elastically slidably connected through the fixed frame 21. The sliding directions of the fixed frame 21 and the retaining plate 22 are consistent with the width direction of the worktable 1. The retaining plate 22 is U-shaped, and the opening section of the retaining plate 22 is arranged facing the support wheel 18. A fixed roller 23 is rotatably connected between the two side plates of the retaining plate 22. The fixed roller 23 is located between the fixed frame 21 and the support wheel 18, and the rotation axis of the fixed roller 23 is parallel to that of the support wheel 18.

[0053] A grinding block 24, a mounting block 33, and a cleaning brush 29 are detachably fixed to the outer peripheral wall of the fixed roller 23 by bolts, which facilitates the maintenance and replacement of the grinding block 24, the mounting block 33, or the cleaning brush 29 by technicians. In this application, the cleaning brush 29 is a relatively soft copper wire brush. In other embodiments, depending on different working conditions, the cleaning brush 29 can also be a nylon brush, a steel wire brush, etc. The arrangement method can be the same as in this application. The cleaning brush 29, the mounting block 33, and the grinding block 24 are evenly spaced along the circumference of the fixed roller 23. The cleaning brush 29, the mounting block 33, and the grinding block 24 are selectively movably corresponding to and abutting against the working surface of the sanding belt 7. A heating element 27 is embedded in the grinding block 24 of the fixed roller 23. In this application, the heating element 27 is an electric heating wire, and the two ends of the electric heating wire are coaxially protruding from the two ends of the fixed roller 23. A second power element 28 for driving the fixed frame 21 to slide is provided on the worktable 1. In this application, the second power element 28 is an electric push rod.

[0054] A controller 13 and an infrared temperature sensor 14 are fixed on the top of the workbench 1. A pressure sensor 15 is fixed between the output end of the second power component 28 and the fixed frame 21. The infrared temperature sensor 14 is arranged facing the connection between the working surface of the sanding belt 7 and the grinding block 24. The pressure sensor 15, the infrared temperature sensor 14, the heating element 27, the first power component 12 and the second power component 28 are all electrically connected to the controller 13.

[0055] When it is necessary to test the heat absorption performance of the sanding belt 7, the technician loosens the tension wheel 17 and wraps the sanding belt 7 to be tested around the drive wheel 16, the tension wheel 17 and the support wheel 18. Then, the tension wheel 17 is tightened to install the sanding belt 7. Then the technician starts the grinding equipment 11, and the controller 13 drives the first power component 12 to work and drives the drive wheel 16 to rotate, so as to drive the sanding belt 7 to work.

[0056] Then, the controller 13 drives the second power component 28 to work, causing the fixed frame 21 and the pressing plate 22 to slide, and driving the fixed roller 23 to approach the sanding belt 7, so that the grinding block 24 and the working surface of the sanding belt 7 are pressed together, and the end of the pressing plate 22 near the fixed roller 23 overcomes the elastic force and slides towards the fixed frame 21 until the pressure sensor 15 reaches the set pressure value and transmits the electrical signal to the controller 13. At this time, the controller 13 stops the second power component 28 from working, thereby simulating the pressure of the workpiece pressing against the sanding belt 7 during processing, and realizing the simulation of the working condition of the sanding belt 7 grinding the surface.

[0057] At the same time, the controller 13 powers on the heating element 27 to heat the grinding block 24, reducing the time required for the sanding belt 7 to reach the design temperature during testing, reducing the testing cycle for a single sanding belt 7, and improving testing efficiency.

[0058] When the infrared temperature sensor 14 detects that the grinding area has reached the set temperature, it transmits an electrical signal to the controller 13. At this time, the controller 13 drives the second power component 28 to work, and moves the grinding block 24 away from the sanding belt 7 until the fixed frame 21 moves to the initial position. Then, the fixed roller 23 is rotated by the switching component 6 until the cleaning brush 29 corresponds to the sanding belt 7. Then, when the second power component 28 continues to work, it drives the fixed frame 21 to slide closer to the sanding belt 7, so that the bristles of the cleaning brush 29 slightly press against the sanding belt 7 until the pressure sensor 1... 5. When a smaller set pressure value is reached, an electrical signal is transmitted to the controller 13. At this time, the controller 13 stops the second power component 28 from working. As the sanding belt 7 continues to rotate, it cleans the sanding debris, dust, or detached abrasive particles floating in the chip space and on the abrasive surface. At the same time, the third power component 43 works to make the cleaning brush 29 swing and slide along the working surface of the sanding belt 7, thereby improving the cleaning effect on the surface of the sanding belt 7, reducing the impact on the coating effect of the subsequent reinforcing coating 34 and the detection results of the video detection module 31, and improving the accuracy of the detection results.

[0059] Then the second power component 28 and the switching component 6 repeat the previous step until the reinforcing coating 34 is pressed against the working surface of the sanding belt 7, until the pressure sensor 15 reaches a small set pressure value and transmits an electrical signal to the controller 13. At this time, the controller 13 stops the second power component 28 from working. As the sanding belt 7 rotates, the reinforcing coating 34 is evenly coated on the surface of the sanding belt 7. At the same time, the first power component 12 reduces the speed of the drive wheel 16 to improve the coating effect.

[0060] Since the abrasive in the abrasive belt 7 is adhered to the substrate by an adhesive, the abrasive used for grinding is a protruding part. The gap between the abrasive and the adhesive layer forms a recessed chip-containing space, allowing the reinforcing coating 34 to mainly act on the abrasive. At this time, the video detection module 31 takes pictures of the surface of the abrasive belt 7. Due to the illumination of the blue LED lamp 32, the reinforcing coating 34 excites a wider wavelength of light under the blue light, enhancing the contrast between the abrasive in the abrasive belt 7 and the chip-containing space, thus improving the detection effect of the video detection module 31. At this time, the sharpness of the working end of the abrasive can be analyzed by the area of ​​different highlight points in the image, thereby judging the passivation of the abrasive. At the same time, the density and uniformity of the abrasive can be judged by the analysis of the image by the video detection module 31, thereby judging the abrasive shedding situation. In addition, the performance of the adhesive and the wear degree of the abrasive when the set temperature is reached can be obtained, realizing the detection of the heat absorption performance of the abrasive belt 7 and improving the intuitiveness and representativeness of the detection results.

[0061] After the inspection is completed, the second power component 28 is activated, causing it to slide to its initial position. The switching component 6 is activated, causing the fixed roller 23 to rotate, which in turn causes the grinding block 24 to rotate to the corresponding position of the sanding belt 7. Then, the technician removes the sanding belt 7 that has been inspected and installs the next sanding belt 7, thus achieving rapid cycle inspection and improving inspection efficiency.

[0062] Meanwhile, technicians can adjust the power of the heating element 27, replace the grinding blocks 24 with different materials, and adjust the threshold values ​​of the infrared temperature sensor 14 and the pressure sensor 15 to adapt to different working conditions and meet the testing requirements of sanding belts 7 of different specifications and models.

[0063] Furthermore, to simulate actual working conditions such as the sanding of the workpiece's inclined surface by the abrasive belt 7 and improve the authenticity of the test results, a drive component 25 is installed on the worktable 1, referring to... Figure 2 and Figure 3 The driving component 25 includes a driving frame 251 slidably connected to the inner wall of the fixed frame 21. Both the fixed frame 21 and the driving frame 251 are rectangular. Dovetail-shaped guide blocks 254 are fixed on the four sides of the driving frame 251. Guide grooves 255 for sliding of the guide blocks 254 and guide openings 256 for guiding the movable sliding in and out are provided on the four inner side walls of the fixed frame 21. The driving frame 251 slides in the height and width directions of the worktable 1 within the fixed frame 21. A driving gear 252 is rotatably connected to the fixed frame 21. The rotation axis of the driving gear 252 is consistent with the length direction of the worktable 1. A square internal gear ring 253 is fixed on the inner side wall of the driving frame 251. The driving gear 252 meshes with the internal gear ring 253. The abutment plate 22 is elastically slidably connected to the driving frame 251.

[0064] To simulate actual working conditions such as abrasive belt 7 grinding the inclined surface of a workpiece and improve the authenticity of the test results, a swinging component 26 is also installed on the worktable 1, for reference. Figure 4 and Figure 5 The swinging component 26 includes a first one-way gear 261 and a second one-way gear 262 coaxially fixed on both sides of the fixed roller 23. The first one-way gear 261 and the second one-way gear 262 have opposite rotational directions. Two first racks 263 and two second racks 264 are slidably connected on the abutment plate 22. The two first racks 263 and the two second racks 264 correspond one-to-one and are arranged opposite each other. The two first racks 263 are located on opposite sides of the first one-way gear 261 and are movably meshed with the first one-way gear 261. The two second racks 264 are located on opposite sides of the second one-way gear 262 and are meshed with the second one-way gear 262. The sliding directions of the first racks 263 and the second racks 264 are consistent with the sliding direction of the fixed frame 21.

[0065] To drive the drive gear 252 to rotate, a transmission assembly 4 is provided on the worktable 1, as shown in the reference. Figure 4 and Figure 5 The transmission assembly 4 includes a universal joint coupling 42 with axial compensation and a transmission shaft 41 rotatably connected to the "U"-shaped base plate of the abutment plate 22. The rotation axis of the transmission shaft 41 is parallel to the rotation axis of the drive gear 252. One end of the universal joint coupling 42 is connected to the rotation axis of the drive gear 252, and the other end of the universal joint coupling 42 is connected to the transmission shaft 41. A third power component 43 for driving the transmission shaft 41 to rotate is fixed on the abutment plate 22. The output end of the third power component is connected to the end of the transmission shaft 41 away from the universal joint coupling 42. The third power component 43 is electrically connected to the controller 13. In this application, the third power component 43 is a rotating motor.

[0066] To drive the sliding of the first rack 263 and the second rack 264, thereby rotating the fixed roller 23, a sliding assembly 5 is provided on the worktable 1, as shown in the figure. Figure 4 and Figure 5 The sliding assembly 5 includes a worm 52 coaxially fixed to the transmission shaft 41 and two worm wheels 51 rotatably connected to the abutment plate 22. The rotation axis of the worm wheels 51 is parallel to the rotation axis of the fixed roller 23. The two worm wheels 51 are arranged opposite each other and both mesh with the worm 52. Cranks 53 are fixed at both ends of the worm wheel 51 shaft. The two cranks 53 on one worm wheel 51 correspond one-to-one with a first rack 263 and a second rack 264, respectively. The two cranks 53 on the other worm wheel 51 correspond one-to-one with the remaining first rack 263 and second rack 264, respectively. A connecting rod 54 is rotatably connected to the crank 53. The end of the connecting rod 54 away from the crank 53 is rotatably connected to the first rack 263 / second rack 264. The rotation axis of the connecting rod 54 is parallel to the rotation axis of the worm wheel 51.

[0067] After the simulated sanding belt 7 performs surface grinding, the controller 13 drives the third power component 43 to work and drives the transmission shaft 41 to rotate. It also drives the drive gear 252 to rotate through the universal joint coupling 42. Since the internal gear ring 253 is a regular quadrilateral shape, the drive gear 252 meshes with the four sides of the internal gear ring 253 in sequence, thereby driving the internal gear ring 253 and the drive frame 251 to slide along the side of the fixed frame 21. This causes the grinding block 24 to move in a periodic motion in the regular quadrilateral shape corresponding to the internal gear ring 253, thus enabling the grinding block 24 to slide up, down, left, and right along the fixed frame 21.

[0068] Simultaneously, when the drive shaft 41 rotates, it drives the worm 52 to rotate, thereby driving the two worm gears 51 to rotate, which in turn drives the crank 53 and connecting rod 54 to rotate. This enables the two first racks 263 to slide closer / away from each other and the two second racks 264 to slide closer / away from each other. At this time, the first rack 263 meshes with the first one-way gear 261, thereby driving the first one-way gear 261 and the second one-way gear 262 to rotate synchronously. Since the rotational directions of the first one-way gear 261 and the second one-way gear 262 are opposite, when the first one-way gear 261 rotates... When gear 261 rotates, the second one-way gear 262 idles. At this time, the first one-way gear 261 drives the fixed roller 23 to rotate, and the grinding block 24 deflects. When the first one-way gear 261 reverses, it idles, and the second one-way gear 262 drives the fixed roller 23 to reverse, thus causing the grinding block 24 to reverse. At the same time, due to the elastically set abutment plate 22, the grinding block 24 has space to move away from the sanding belt 7 and swing, thereby realizing the periodic swing of the grinding block 24 to simulate the working condition of the sanding belt 7 grinding the inclined surface.

[0069] This device simulates different working conditions during the actual grinding process of the sanding belt 7, thereby reflecting the performance of the sanding belt 7 in actual use, improving the reliability of subsequent test results, reducing the labor intensity of technicians, and improving test efficiency. At the same time, a single power source can achieve coordinated and synchronous operation of the swinging of the grinding block 24 and the sliding of the grinding block 24 along the sandpaper working surface. The mechanical structure has strong load and impact resistance, a compact structure, small equipment size, saves power source, and improves the stability of equipment operation.

[0070] Furthermore, in order to achieve the step-by-step rotation of the fixed roller 23, a switching component 6 is provided on the worktable 1, as shown in the figure. Figure 4 and Figure 5 The switching component 6 includes two guide frames 61 slidably connected to the abutment plate 22. Two first racks 263 are respectively slidably arranged through the two guide frames 61, and the inner sidewall of the guide frame 61 is movably abutted against the sidewall of the first rack 263. The sliding direction of the guide frame 61 is consistent with the height direction of the worktable 1 and perpendicular to the sliding direction of the first rack 263. The connection between the fixed roller 23 and the abutment plate 22 is provided with damping. A fourth power component 62 is fixed on the abutment plate 22 to drive the two guide frames 61 to slide closer / away from each other. The two output ends of the fourth power component 62 are respectively fixed to the two guide frames 61. The fourth power component 62 is electrically connected to the controller 13. In this application, the fourth power component 62 is a bidirectional electric push rod.

[0071] In order to collect abrasive, shavings and dust that fall off the sanding belt 7 and improve the cleanliness of the working environment, a dust collection hood is fixed directly below the support wheel 18, and the dust collection hood is connected to the exhaust fan.

[0072] After the second power component 28 stops working, when it is necessary to switch the grinding block 24, cleaning brush 29 and mounting block 33, the controller 13 drives the fourth power component 62 to work, causing the two guide frames 61 to slide away from each other, so that the two first racks 263 are separated from the first one-way gear 261. Then the controller 13 drives the third power component 43 to work, realizing the periodic sliding of the two second racks 264 towards and away from each other, and realizing the step rotation of the fixed roller 23 under the action of the second one-way gear 262. The damping set makes it difficult for the fixed roller 23 to reverse during the intermittent period of step rotation, thereby realizing the switching of the grinding block 24, cleaning brush 29 and mounting block 33. The degree of automation is high and the detection efficiency is improved.

[0073] Meanwhile, the fixed roller 23 uses the same transmission structure and the same power source for its periodic forward and reverse rotation and stepping rotation. This reduces the cumulative error between multiple power sources working over a long period of time, as well as the dimensional error between multiple transmission structures. It also reduces the risk of a large angular deviation between the end face of the mounting block 33 and the working surface of the sand belt 7 after the equipment has been running for a long time. This improves the uniformity of the coating of the reinforcing paint 34, thereby improving the reliability of the test results.

[0074] The implementation principle of the sanding belt heat absorption performance testing device in this application embodiment is as follows: When it is necessary to test the heat absorption performance of the sanding belt 7, the technician first loosens the tension wheel 17, and after the sanding belt 7 to be tested is wound around the drive wheel 16, the tension wheel 17 and the support wheel 18, the tension wheel 17 is tightened to realize the installation of the sanding belt 7. The technician starts the grinding equipment 11, the controller 13 controls the drive first power component 12 to work, and drives the drive wheel 16 to rotate, so as to drive the sanding belt 7 to work.

[0075] The controller 13 controls the second power component 28 to work, and sequentially drives the fixed frame 21, drive frame 251, pressing plate 22, fixed roller 23 and grinding block 24 to slide, so that the grinding block 24 presses against the sanding belt 7 until the pressure sensor 15 reaches the set pressure value and transmits the electrical signal to the controller 13. At this time, the controller 13 stops the second power component 28 from working, thereby simulating the pressure of the workpiece pressing against the sanding belt 7 during processing, and realizing the simulation of the working condition of the sanding belt 7 grinding the surface.

[0076] At the same time, the controller 13 powers on the heating element 27 to heat the grinding block 24, reducing the cycle of detecting a single sanding belt 7.

[0077] Then the third power component 43 works and drives the transmission shaft 41 to rotate, and drives the drive gear 252 to rotate through the universal joint coupling 42, so that the drive gear 252 meshes with the four sides of the internal gear ring 253 in sequence, thereby driving the internal gear ring 253 and the drive frame 251 to slide along the side of the fixed frame 21, and thus the motion trajectory of the drive frame 251 and the grinding block 24 is a periodic motion of the regular quadrilateral corresponding to the internal gear ring 253, so that the grinding block 24 slides up, down and left and right along the fixed frame 21.

[0078] Simultaneously, the transmission shaft 41 sequentially drives the worm 52, worm wheel 51, crank 53, and connecting rod 54 to rotate, thereby causing the first rack 263 and the second rack 264 to slide, and causing the first one-way gear 261 and the second one-way gear 262 to periodically rotate in both directions. Since the first one-way gear 261 and the second one-way gear 262 can rotate in opposite directions, the grinding block 24 can oscillate periodically to simulate the working conditions of the sanding belt 7 grinding the inclined surface, thus simulating different working conditions of the actual grinding process of the sanding belt 7.

[0079] When the infrared temperature sensor 14 detects that the grinding area has reached the set temperature, the infrared temperature sensor 14 transmits an electrical signal to the controller 13. At this time, the controller 13 drives the second power component 28 to work and moves the grinding block 24 away from the sanding belt 7 until the fixed frame 21 moves to the initial position. Then, the controller 13 drives the fourth power component 62 to work, causing the two guide frames 61 to slide away from each other, so that the two first racks 263 are separated from the first one-way gear 261. Then, the controller 13 controls the third power component 43 to work, so as to drive the two second sliding components to drive the second one-way gear 262 to rotate, thereby realizing the step-by-step rotation of the fixed roller 23 until the cleaning brush 29 corresponds to the sanding belt 7. Then, the second power component 28 drives the fixed frame 21 to move, so that the cleaning brush 29 presses against the sanding belt 7. At the same time, the third power component 43 continues to work, driving the cleaning brush 29 to slide and swing along the working surface of the sanding belt 7, thereby cleaning the surface of the sanding belt 7.

[0080] After cleaning, the first power component 12 reduces its rotation, while the second power component 28 and the fourth power component 62 repeat the above steps to rotate the mounting block 33 to correspond with the sanding belt 7 and make the reinforcing coating 34 press against the sanding belt 7. At this time, the third power component 43 stops working. As the sanding belt 7 rotates, the reinforcing coating 34 is applied to the surface of the sanding belt 7. At the same time, the video detection module 31 takes pictures and analyzes the surface of the sanding belt 7 to detect the heat absorption performance of the sanding belt 7.

[0081] After the test is completed, the first power component 12 stops working, and at the same time the second power component 28 works, causing the fixed frame 21, fixed roller 23, etc. to move to the initial position. Then the third power component 43 works until the grinding block 24 rotates to correspond with the sanding belt 7, realizing the zeroing and reset of the equipment. Then the technicians can remove the sanding belt 7 after the test is completed.

[0082] This application discloses a method for testing the heat absorption performance of abrasive belts. Based on a device for testing the heat absorption performance of abrasive belts, the method includes the following steps:

[0083] S1. First, the technician loosens the tension wheel 17, and after winding the sanding belt 7 to be tested onto the drive wheel 16, the tension wheel 17 and the support wheel 18, the technician tightens the tension wheel 17 to complete the installation of the sanding belt 7.

[0084] S2, the technician starts the grinding equipment 11, the controller 13 controls the first power component 12 and the second power component 28 to work. The first power component 12 drives the drive wheel 16 to rotate, so as to drive the sanding belt 7 to work. The second power component 28 drives the fixed frame 21, drive frame 251, pressing plate 22, fixed roller 23 and grinding block 24 to slide in sequence, so that the grinding block 24 presses against the sanding belt 7 until the pressure sensor 15 reaches the set pressure value. At the same time, the heater heats the grinding block 24 to realize the working condition of the sanding belt 7 grinding the surface.

[0085] S3, the controller 13 drives the third power component 43 to work, and sequentially drives the transmission shaft 41, universal joint coupling 42 and drive gear 252 to rotate, so that the drive gear 252 meshes with the four sides of the internal gear ring 253 in sequence, so that the movement trajectory of the grinding block 24 is a periodic movement of a regular quadrilateral. At the same time, the transmission shaft 41 sequentially drives the worm 52, worm wheel 51, crank 53 and connecting rod 54 to rotate, so that the first rack 263 and the second rack 264 slide and drive the first one-way gear 261 and the second one-way gear 262 to periodically rotate forward and reverse, so as to drive the fixed roller 23 to periodically rotate forward and reverse, thereby driving the grinding block 24 to swing, and thus realizing the working condition of simulating the sanding belt 7 grinding the inclined surface;

[0086] S4, when the infrared temperature sensor 14 detects that the design threshold has been reached, the simulated sanding belt 7 finishes grinding, the second power component 28 completes one reciprocating motion, causing the grinding block 24 to separate from the sanding belt 7. At the same time, through the switching component 6, the cleaning brush 29 is rotated to correspond with the sanding belt 7, and the cleaning brush 29 is pressed against the sanding belt 7 to clean the impurities floating on the surface of the sanding belt 7.

[0087] S5, the second power component 28 completes another reciprocating motion, causing the cleaning wheel to separate from the sanding belt 7. At the same time, by switching component 6, the mounting block 33 is rotated to correspond with the sanding belt 7, and the reinforcing coating 34 is pressed against the sanding belt 7, so that the reinforcing coating 34 is evenly coated on the surface of the sanding belt 7. Meanwhile, the video detection module 31 takes pictures and analyzes the surface of the sanding belt 7 to detect the heat absorption performance of the sanding belt 7.

[0088] S6, the second power component 28 operates, causing the fixed frame 21, drive frame 251, clamping plate 22 and fixed roller 23 to slide to the initial position. At the same time, the grinding block 24 is rotated to the position corresponding to the sanding belt 7 by the switching component 6. Then the technician removes the sanding belt 7 and repeats the above steps.

[0089] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the heat absorption performance of abrasive belts, comprising a workbench (1) and a grinding device (11) disposed on the workbench (1), the grinding device (11) comprising a drive wheel (16), a tension wheel (17), two support wheels (18) rotatably disposed on the workbench (1), and a first power component (12) for driving the drive wheel (16) to rotate, the two support wheels (18) being arranged at intervals in a vertical direction, and an abrasive belt (7) being wound around the drive wheel (16), the tension wheel (17), and the support wheels (18), and being connected in a transmission manner to the drive wheel (16), the tension wheel (17), and the support wheels (18), characterized in that: The workbench (1) is equipped with a grinding component (2) for grinding with a sanding belt (7) and a detection component (3) for detecting the surface of the sanding belt (7) after grinding. The grinding assembly (2) includes a fixed frame (21) slidably disposed on the worktable (1), a clamping plate (22) passing through the fixed frame (21), a fixed roller (23) rotatably disposed on the clamping plate (22), the fixed roller (23) being located between the fixed frame (21) and the support wheel (18), the rotation axis of the fixed roller (23) being parallel to that of the support wheel (18), a grinding block (24) being detachably disposed on the outer peripheral wall of the fixed roller (23), the grinding block (24) being located between the two support wheels (18) and being movably pressed against the sanding belt (7), and a swinging component (26) for swinging the grinding block (24), a driving component (25) for periodically sliding the fixed roller (23) along the working surface of the sanding belt (7), a heating component (27) for heating the grinding block (24), and a second power component (28) for driving the fixed frame (21) to slide. The detection component (3) includes a video detection module (31) and a blue LED light (32) mounted on the workbench (1). The video detection module (31) and the blue LED light (32) are both arranged facing the sanding belt (7). The outer peripheral wall of the fixed roller (23) is detachably provided with a mounting block (33). The mounting block (33) corresponds to the sanding belt (7). The mounting block (33) is provided with a solid block-shaped reinforcing coating (34). The reinforcing coating (34) can emit a wider wavelength of light under blue light irradiation. The reinforcing coating (34) is in contact with the sanding belt (7). The workbench (1) is provided with a switching component (6) that makes the fixed roller (23) rotate. The driving component (25) includes a driving frame (251) slidably disposed on the inner wall of the fixed frame (21), a driving gear (252) rotatably disposed on the fixed frame (21), and an internal gear ring (253) in the shape of a regular square on the inner side wall of the driving frame (251). The driving gear (252) meshes with the internal gear ring (253). The abutment plate (22) is elastically slidably connected to the driving frame (251). The output end of the second power component (28) is provided with a space between it and the fixed frame (21). There is a pressure sensor (15), and the worktable (1) is equipped with a controller (13) and an infrared temperature sensor (14). The infrared temperature sensor (14) is arranged facing the connection between the working surface of the sanding belt (7) and the grinding block (24). The pressure sensor (15), the infrared temperature sensor (14), the first power component (12) and the second power component (28) are all electrically connected to the controller (13). The worktable (1) is equipped with a transmission assembly (4) that drives the drive gear (252) to rotate.

2. The device for testing the heat absorption performance of abrasive belts according to claim 1, characterized in that: The swinging component (26) includes a first one-way gear (261) and a second one-way gear (262) coaxially arranged on both sides of the fixed roller (23). The first one-way gear (261) and the second one-way gear (262) have opposite rotational directions. Two first racks (263) and two second racks (264) are slidably arranged on the abutment plate (22). The two first racks (263) and the two second racks (264) correspond to each other and are arranged opposite to each other. The two first racks (263) are located on opposite sides of the first one-way gear (261) and are movably meshed with the first one-way gear (261). The two second racks (264) are located on opposite sides of the second one-way gear (262) and are meshed with the second one-way gear (262). The worktable (1) is provided with a sliding component (5) that drives the two first racks (263) to slide closer / away from each other and the two second racks (264) to slide closer / away from each other.

3. The device for testing the heat absorption performance of abrasive belts according to claim 2, characterized in that: The transmission assembly (4) includes a universal joint coupling (42) with axial compensation and a transmission shaft (41) rotatably mounted on the abutment plate (22). One end of the universal joint coupling (42) is connected to the rotating shaft of the drive gear (252), and the other end of the universal joint coupling (42) is connected to the transmission shaft (41). A third power component (43) for driving the transmission shaft (41) to rotate is provided on the abutment plate (22). The third power component (43) is electrically connected to the controller (13).

4. The device for testing the heat absorption performance of abrasive belts according to claim 3, characterized in that: The sliding assembly (5) includes a worm (52) coaxially mounted on the transmission shaft (41) and two worm wheels (51) rotatably mounted on the abutment plate (22). The two worm wheels (51) are arranged opposite to each other and both mesh with the worm (52). Both ends of the worm wheel (51) shaft are provided with cranks (53). The two cranks (53) on one worm wheel (51) correspond one-to-one with a first rack (263) and a second rack (264), respectively. The two cranks (53) on the other worm wheel (51) correspond one-to-one with the remaining first rack (263) and second rack (264), respectively. A connecting rod (54) is rotatably mounted on the crank (53). The end of the connecting rod (54) away from the crank (53) is rotatably connected to the first rack (263) / second rack (264). When the worm gear (51) rotates, it drives the two worm gears (51) to move in opposite directions, and drives the crank (53) and connecting rod (54) to rotate, thereby driving the first rack (263) and the second rack (264) to slide, and the two first racks (263) and the two second racks (264) slide closer to each other / away from each other.

5. The device for testing the heat absorption performance of abrasive belts according to claim 4, characterized in that: A cleaning brush (29) is detachably fixed on the outer peripheral wall of the fixed roller (23). The cleaning brush (29), the mounting block (33) and the grinding block (24) are evenly spaced along the circumference of the fixed roller (23). The cleaning brush (29), the mounting block (33) and the grinding block (24) are selectively and movably corresponding to the working surface of the sand belt (7). The cleaning brush (29) and the sand belt (7) are movably pressed together.

6. The device for testing the heat absorption performance of abrasive belts according to claim 5, characterized in that: The switching component (6) includes two guide frames (61) slidably disposed on the abutment plate (22). Two first racks (263) are respectively slidably disposed through the two guide frames (61). The inner sidewall of the guide frame (61) is movably abutted against the sidewall of the first rack (263). The sliding direction of the guide frame (61) is perpendicular to the sliding direction of the first rack (263). The connection between the fixed roller (23) and the abutment plate (22) is provided with damping. The abutment plate (22) is provided with a fourth power component (62) for driving the two guide frames (61) to slide closer to / away from each other. The fourth power component (62) is electrically connected to the controller (13).

7. A method for testing the heat absorption performance of abrasive belts, based on the abrasive belt heat absorption performance testing device as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. First, the technician loosens the tension wheel (17), and after wrapping the sand belt (7) to be tested around the drive wheel (16), tension wheel (17) and support wheel (18), the technician tightens the tension wheel (17) to realize the installation of the sand belt (7); S2, the technician starts the grinding equipment (11), the controller (13) controls the first power component (12) and the second power component (28) to work. The first power component (12) drives the drive wheel (16) to rotate, so as to drive the sanding belt (7) to work. The second power component (28) drives the fixed frame (21), drive frame (251), clamping plate (22), fixed roller (23) and grinding block (24) to slide in sequence, so that the grinding block (24) presses against the sanding belt (7) until the pressure sensor (15) reaches the set pressure value. At the same time, the heater heats the grinding block (24) to realize the working condition of simulating the sanding belt (7) grinding the surface. S3, the controller (13) drives the third power component (43) to work, and sequentially drives the transmission shaft (41), universal joint coupling (42) and drive gear (252) to rotate, so that the drive gear (252) meshes with the four sides of the internal gear ring (253) in sequence, so that the movement trajectory of the grinding block (24) is a regular quadrilateral periodic motion. At the same time, the transmission shaft (41) sequentially drives the worm (52), worm wheel (51), crank (53) and connecting rod (54) to rotate, so that the first rack (263) and the second rack (264) slide and drive the first one-way gear (261) and the second one-way gear (262) to periodically rotate forward and reverse, so as to drive the fixed roller (23) to periodically rotate forward and reverse, thereby driving the grinding block (24) to swing, and thus realizing the working condition of simulating the sanding belt (7) grinding the inclined surface; S4, when the infrared temperature sensor (14) detects that the design threshold has been reached, the simulated sanding belt (7) finishes grinding, the second power component (28) completes one reciprocating motion, so that the grinding block (24) separates from the sanding belt (7), and at the same time, through the switching component (6), the cleaning brush (29) is rotated to correspond with the sanding belt (7), and the cleaning brush (29) is pressed against the sanding belt (7) to achieve the cleaning of impurities floating on the surface of the sanding belt (7); S5, the second power component (28) completes another reciprocating motion, causing the cleaning wheel to separate from the sanding belt (7). At the same time, by switching component (6), the mounting block (33) is rotated to correspond with the sanding belt (7), and the reinforcing coating (34) is pressed against the sanding belt (7), so that the reinforcing coating (34) is evenly coated on the surface of the sanding belt (7). Meanwhile, the video detection module (31) takes pictures and analyzes the surface of the sanding belt (7) to detect the heat absorption performance of the sanding belt (7). S6, the second power unit (28) works, causing the fixed frame (21), drive frame (251), abutment plate (22) and fixed roller (23) to slide to the initial position. At the same time, the grinding block (24) is rotated to the position corresponding to the sanding belt (7) by switching component (6). Then the technician removes the sanding belt (7) and repeats the above steps.

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