Method and device for automatic pasting of abrasive paper on the surface of a drum

Abstract

The application provides a kind of automatic pasting method and device of drum surface sandpaper, and the automatic pasting device includes: pasting mechanism, positioning mechanism, installation mechanism, installation mechanism is used to install drum, and pasting mechanism is connected with positioning mechanism.The automatic pasting method includes: the sandpaper needing to be pasted is wound to the roller;By driving motor two adjustment base two left and right position on the guide rail, then by positioning laser accurately positioning the pasting position of drum surface sandpaper;The front end of sandpaper needing to be pasted is fastened to the upper end of drum with fastening assembly;Start pasting sandpaper, after the front end of sandpaper has been closely attached to the drum, the fastening assembly is raised;Slowly rotate the drum, and the sandpaper is automatically pasted along the surface of the drum.The application can automatically complete the pasting of sandpaper, and the whole process does not need to be pressed and fitted manually, avoids the problems such as air bubbles caused by uneven bonding strength generated by manual fitting, saves time and effort.

Description

Technical Field

[0001] This invention relates to the field of tire testing machine technology, and in particular to a method and apparatus for automatically applying sandpaper to the surface of a drum. Background Technology

[0002] In tire dynamics testing, such as tire rolling resistance testing, sandpaper is required to be pasted on the surface of the drum of the tire testing machine.

[0003] There are two methods for attaching sandpaper to the surface of the drum of a tire testing machine:

[0004] The first method is the manual sandpaper application method. This method requires manually rotating the drum and then pressing the sandpaper with a hand tool to achieve the sandpaper application.

[0005] The second method uses an upper pressure rod and a lower pressure rod. The upper pressure rod is fitted with an upper pressure roller, and the lower pressure rod is fitted with a lower pressure roller. The sandpaper is bonded by the pressure between the upper and lower pressure rollers.

[0006] The above method of applying sandpaper has the following technical problems:

[0007] The first method, manual sanding, has drawbacks such as uneven distribution of sandpaper adhesion strength due to manual pressing, and the tendency for air bubbles or creases to form at the adhesive joint.

[0008] The second method, which also involves manually pushing the upper and lower pressure rods to adhere the sandpaper, is time-consuming and labor-intensive. Summary of the Invention

[0009] This invention provides a method and apparatus for automatically applying sandpaper to the surface of a rotating drum, in order to solve the technical problems mentioned in the background art.

[0010] To solve the above-mentioned technical problems, the present invention discloses an automated sandpaper pasting device for a rotating drum surface, comprising:

[0011] The device includes a pasting mechanism, a positioning mechanism, and an installation mechanism. The installation mechanism is used to install the rotating drum, and the pasting mechanism is connected to the positioning mechanism.

[0012] Preferably, the mounting mechanism includes: a base and a drive motor;

[0013] The drum is rotatably mounted on the base via a rotating shaft, and the drive motor is connected to the drum via a transmission.

[0014] Preferably, the fixing frame is disposed on the base, and the rolling resistance testing machine is disposed on one side of the fixing frame corresponding to the drum.

[0015] Preferably, the positioning mechanism is located on the rear side of the first base. The positioning mechanism includes a second drive motor, a lead screw, a guide rail, two second bases, and a roller. The guide rail is located on the rear side of the first base. The second drive motor is fixedly mounted on one end of the guide rail. The two second bases are arranged at intervals on the left and right. The second base is slidably mounted on the guide rail. The lead screw is threadedly connected to the second base, and one end of the lead screw is driven by the second drive motor.

[0016] Preferably, the positioning mechanism further includes a positioning laser and a positioning frame. The positioning frame is fixedly mounted on the top of the two bases, and the two positioning lasers are symmetrically arranged at the left and right ends of the top of the positioning frame.

[0017] Preferably, the adhesive mechanism includes a roller, which is rotatably disposed between the two bases.

[0018] Preferably, the bonding mechanism further includes a fastening assembly, which includes a clamping member and a lifting drive device. The clamping member is driven to move up and down by the lifting drive device and is located above the drum.

[0019] Preferably, there are two bases spaced apart from each other on the left and right. A fixing frame is set on the base. The lifting drive device includes a fixing box, a pressure rod groove, a support plate, a gas rod one, and a gas rod two. The fixing box is fixedly set on the top of the fixing frame. The pressure rod groove is opened on the fixing box. The support plate is fixedly set on the side of the fixing frame close to the corresponding base. The gas rod one is fixedly set on the support plate. The gas rod two is fixedly set on the top of the base away from the fixing frame. The clamping member is fixed on the top of the gas rod one and the gas rod two. One end of the clamping member is inserted into the pressure rod groove.

[0020] Preferably, it further includes a cleaning mechanism, which includes a movable component and an air jet component. The movable component is disposed on one side of the base, and the air jet component is disposed on the movable component.

[0021] The movable components include a side plate, a rotating column, a horizontal shaft, a fixed arm, a rotating rod one, a rotating rod two, a pneumatic rod three, a pneumatic rod four, and a pneumatic clamp. The side plate is fixedly mounted on the side wall of the base one. The rotating column is fixedly mounted on the top of the side plate. One end of the horizontal shaft is rotatably connected to the top of the rotating column. The bottom end of the fixed arm is rotatably mounted on the top of the other end of the horizontal shaft. One end of the rotating rod one is hinged to the top of the fixed arm. One end of the rotating rod two is hinged to the other end of the rotating rod one. The pneumatic clamp is fixedly mounted at the bottom of the other end of the rotating rod two. Both ends of the pneumatic rod three are respectively hinged to the fixed arm and the rotating rod one. Both ends of the pneumatic rod four are respectively hinged to the rotating rod one and the rotating rod two.

[0022] This invention also discloses an automated method for applying sandpaper to the surface of a rotating drum, applied to the aforementioned automated sandpaper application device for the surface of a rotating drum, comprising:

[0023] Step 1: Wrap the sandpaper you want to stick onto the roller;

[0024] Step 2: Adjust the left and right position of the base 2 on the guide rail by using the drive motor 2, and then accurately position the sandpaper pasting position on the surface of the drum by using the positioning laser;

[0025] Step 3: Secure the front end of the sandpaper to be pasted to the top of the drum using the fastening components;

[0026] Step 4: Begin applying the sandpaper. Once the tip of the sandpaper is firmly attached to the drum, raise the fastening assembly.

[0027] Step 5: Rotate the drum. At this time, the roller containing the sandpaper will also rotate automatically. The sandpaper will automatically stick to the surface of the drum. After the drum has rotated one revolution, the sandpaper will be automatically stuck on.

[0028] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the automatic sandpaper pasting device for the drum surface of the present invention. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the structure of the automatic sandpaper pasting device for the drum surface of the present invention. Figure 2 ;

[0032] Figure 3 A schematic diagram of the overall structure of the automatic sandpaper pasting device for the rotating drum surface of the present invention, which includes a cleaning mechanism;

[0033] Figure 4 This is a schematic diagram of the cleaning mechanism structure of the present invention.

[0034] In the diagram: 1. Adhesive mechanism; 11. Drum; 12. Base 1; 13. Drive motor 1; 14. Frame; 15. Fastening assembly; 151. Fixing box; 152. Pressure bar groove; 153. Support plate; 154. Clamping component; 155. Air rod 1; 156. Air rod 2; 16. Fixing frame; 17. Rolling resistance testing machine; 2. Positioning mechanism; 21. Drive motor 2; 22. Lead screw; 23. Guide rail; 24. Positioning 25. Laser; 26. Positioning frame; 27. Base II; 38. Roller; 39. Cleaning mechanism; 30. Movable component; 311. Side plate; 312. Rotating column; 313. Horizontal axis; 314. Fixed arm; 315. Rotating rod I; 316. Rotating rod II; 317. Air rod III; 318. Air rod IV; 319. Air clamp; 32. Jet assembly; 321. Air gun; 322. Air hose; 323. Air pump; 34. Locking handle. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] Example 1: This embodiment of the invention provides an automated sandpaper pasting device for a rotating drum surface, comprising:

[0038] The assembly includes a pasting mechanism 1, a positioning mechanism 2, and an installation mechanism. The installation mechanism is used to install the rotating drum 11. The pasting mechanism 1 is connected to the positioning mechanism 2.

[0039] Preferably, the mounting mechanism includes: a base 12 and a drive motor 13;

[0040] The drum 11 is rotatably mounted on the base 12 via a rotating shaft, and the drive motor 13 is connected to the drum 11 in a transmission manner.

[0041] Optionally, there are two bases 12, which are arranged at an interval from left to right. The frame 14 is set on one side of one of the bases 12, and the drive motor 13 is fixedly set on the frame 14.

[0042] Preferably, the fixing frame 16 is disposed on the base 12, and the rolling resistance testing machine 17 is disposed on one side of the fixing frame 16 corresponding to the drum 11. The relative position of the rolling resistance testing machine 17 and the drum, and the working principle used for friction detection, are existing technologies.

[0043] Preferably, the positioning mechanism 2 is located on the rear side of the base 12. The positioning mechanism 2 includes a second drive motor 21, a lead screw 22, a guide rail 23, two second bases 26, and a roller 27. The guide rail 23 is disposed on the rear side of the base 12. The second drive motor 21 is fixedly disposed on one end of the guide rail 23. The two second bases 26 are arranged at intervals on the left and right sides. The second bases 26 are slidably disposed on the guide rail 23. The lead screw 22 is threadedly connected to the second base 26. One end of the lead screw 22 is drive-connected to the second drive motor 21.

[0044] Preferably, the positioning mechanism 2 further includes a positioning laser 24 and a positioning frame 25. The positioning frame 25 is fixedly mounted on the top of the two bases 26, and the two positioning lasers 24 are symmetrically arranged at the left and right ends of the top of the positioning frame 25.

[0045] Preferably, the pasting mechanism 1 includes a roller 27, which is rotatably disposed between the two bases 26.

[0046] Preferably, the pasting mechanism 1 further includes a fastening assembly 15, which includes a clamping member 154 and a lifting drive device. The clamping member 154 is driven to move up and down by the lifting drive device and is located above the rotating drum 11. The clamping member 154 may be a fastening rod.

[0047] Optionally, the lifting drive device includes a fixed box 151, a pressure rod groove 152, a support plate 153, a first gas rod 155, and a second gas rod 156. The fixed box 151 is fixedly installed on the top of the fixed frame 16. The pressure rod groove 152 is opened on the fixed box 151. The support plate 153 is fixedly installed on the side of the fixed frame 16 near the corresponding base 12. The first gas rod 155 is fixedly installed on the support plate 153. The second gas rod 156 is fixedly installed on the top of the base 12 away from the fixed frame 16. The clamping member 154 is fixed to the top of the first gas rod 155 and the second gas rod 156. One end of the clamping member 154 is inserted into the pressure rod groove 152.

[0048] This invention also provides a method for automatically applying sandpaper to the surface of a rotating drum, applied to the aforementioned automatic sandpaper application device for the surface of a rotating drum, comprising:

[0049] Step 1: Wrap the sandpaper to be pasted around roller 27;

[0050] Step 2: Adjust the left and right position of the base 26 on the guide rail 23 by using the drive motor 21, so that the position of the base 26 is roughly aligned with the surface of the drum (fine-tune with the drive motor 21), and then accurately position the sandpaper pasting position on the surface of the drum 11 by using the positioning laser 24.

[0051] Step 3: Secure the front end of the sandpaper to be pasted to the upper end of the drum 11 using the fastening component 15 (pressing component 154), and lock the sandpaper with the locking handle (the degree of locking is adjusted by the locking handle 34; the locking handle is connected to the base 26 and can be used to lock the roller 27 to prevent the roller 27 from rotating).

[0052] Step 4: Start applying sandpaper. When the front end of the sandpaper is firmly attached to the drum 11 (when the sandpaper is about 100mm from the drum, the front end of the sandpaper is firmly attached to the drum), lift the fastening component 15. When applying sandpaper, you can stop by locking the roller 27 through the locking handle.

[0053] Step 5: Slowly rotate the drum 11. At this time, the roller 27 containing the sandpaper will also rotate automatically. The sandpaper will automatically stick to the surface of the drum 11. After the drum 11 has rotated one revolution, the sandpaper will be automatically stuck on.

[0054] The working principle and beneficial effects of the above technical solution are as follows: The present invention places sandpaper on roller 27, and then adjusts the position of base 26 and drum 11 by starting drive motor 21. The positioning laser 24 is activated to determine the position of sandpaper on the surface of drum 11, ensuring that the sandpaper is not misaligned on the surface of drum 11. The front end of the sandpaper is fixed to drum 11 with fastening component 15 to ensure that the sandpaper will not fall off drum 11 before it is properly attached. Drum 11 is rotated and the sandpaper is attached to the surface of drum 11. When the sandpaper is attached to drum 11 for about 100mm, the fastening component 15 is released. At this time, the front end of the sandpaper does not need to be pressed and can continue to be attached. Drum 11 continues to rotate and the sandpaper continues to be attached along drum 11. When drum 11 rotates one revolution, the sandpaper is automatically attached.

[0055] This invention can automatically complete the pasting of sandpaper. The entire process does not require manual pressing and pasting, avoiding problems such as air bubbles caused by uneven adhesion strength during manual pasting, saving time and effort.

[0056] This invention addresses the following problems associated with the two existing methods for applying sandpaper to the surface of a tire testing machine drum, as described in the background art: The first method, manual sandpaper application, suffers from drawbacks such as uneven sandpaper adhesion due to manual pressing, and the tendency for air bubbles or creases to form at the adhesive joint. The second method, also involving manually pushing upper and lower pressure rods to apply the sandpaper, is time-consuming and labor-intensive.

[0057] The guide rail 23 has a limiting function for the base 26, the drive motor 21 transmits power to the lead screw 22, and the base 26 and the lead screw 22 are threaded together, which facilitates the movement of the base 26 on the guide rail 23. The symmetrical arrangement of the positioning lasers 24 facilitates the positioning of the sandpaper.

[0058] The base 12 supports, limits, and assists the rotation of the drum 11. The drive motor 13 drives the drum 11 to rotate through the coupling. The base 12 supports the fixed frame 16. The fixed frame 16 and the base 12 respectively support the fastening assembly 15. The fixed frame 16 applies a horizontal supporting force to the rolling resistance testing machine 17.

[0059] Activating the first air spring 155 and the second air spring 156 can adjust the height of the clamping member 154, thereby adjusting the distance between the clamping member 154 and the rotating drum 11, thus adjusting the adhesion and fastening effect of the clamping member 154 on the sandpaper on the rotating drum 11. The pressure bar groove 152 serves to limit the clamping member 154.

[0060] Example 2: Based on Example 1, such as Figure 2 As shown, it also includes a cleaning mechanism 3, which includes a movable component 31 and an air jet component 32. The movable component 31 is disposed on one side of the base 12, and the air jet component 32 is disposed on the movable component 31.

[0061] The movable component 31 includes a side plate 311, a rotating column 312, a horizontal shaft 313, a fixed arm 314, a first rotating rod 315, a second rotating rod 316, a third pneumatic rod 317, a fourth pneumatic rod 318, and a clamp 319. The side plate 311 is fixedly mounted on the side wall of the base 12. The rotating column 312 is fixedly mounted on the top of the side plate 311. One end of the horizontal shaft 313 is rotatably connected to the top of the rotating column 312. The bottom end of the fixed arm 314 is rotatably mounted on the base 12. At the top of the other end of the horizontal shaft 313, one end of the rotating rod 315 is hinged to the top of the fixed arm 314, one end of the rotating rod 316 is hinged to the other end of the rotating rod 315, the air clamp 319 is fixedly installed at the bottom of the other end of the rotating rod 316, the two ends of the air rod 317 are respectively hinged to the fixed arm 314 and the rotating rod 315, and the two ends of the air rod 318 are respectively hinged to the rotating rod 315 and the rotating rod 316.

[0062] The jet assembly 32 includes an air gun 321, an air pipe 322, and an air pump 323. The air gun 321 is disposed within the air clamp 319, and the air pump 323 is disposed on the top of the side plate 311. The air gun 321 and the air pump 323 are connected via the air pipe 322. The jet assembly 32 can refer to existing high-pressure dust removal devices.

[0063] The working principle and beneficial effects of the above technical solution are as follows:

[0064] The movable component 31 is located on one side of the base 12, which facilitates the movement of the movable component 31 around the base 12. The jet component 32 is located on the movable component 31, which facilitates the synchronous displacement of the jet component 32 with the movable component 31, and allows for all-round jet cleaning.

[0065] The base 12 provides horizontal support to the side plate 311, and the side plate 311 provides vertical upward support to the rotating column 312. The rotating column 312 provides support and limits the horizontal axis 313, facilitating rotation and position adjustment of the horizontal axis 313 with the top of the rotating column 312 as the origin. The horizontal axis 313 provides support and limits the fixed arm 314, facilitating rotation of the fixed arm 314 with one end of the horizontal axis 313 as the origin. The rotating rod 315 is hinged to the fixed arm 314, facilitating its rotation. The rotating rod 316 is hinged to the rotating rod 315. Rotating rod 316 exerts a vertical upward pulling force on air clamp 319. Air clamp 319 is secured with bolts, allowing for easy adjustment of its tightness and facilitating the fastening of the mechanism placed within it. Fixed arm 314 secures air rod 317. The push rod of air rod 317 pushes rotating rod 315, which in turn secures air rod 318, facilitating rotation between fixed arm 314 and rotating rod 315. The push rod of air rod 318 pushes rotating rod 316, again facilitating rotation between rotating rod 316 and rotating rod 315. Air pipe 322 connects air pump 323 to air gun 321, facilitating the transfer of high-pressure gas from air pump 323 to air gun 321. The high-pressure gas is then ejected from air gun 321 to clean the device.

[0066] Example 3, based on Example 1 or 2, further includes:

[0067] A sandpaper testing device is used to acquire sandpaper parameters, including sandpaper thickness and sandpaper width; wherein the sandpaper width direction completely covers the adhesive layer.

[0068] A pressure detection device is used to obtain the pressure of the tire under test on the sandpaper; wherein, a connecting sleeve can be installed outside the drum 11, and a force sensor is installed between the connecting sleeve and the drum 11, and the sandpaper is pasted on the outside of the connecting sleeve;

[0069] The acquisition device is used to acquire parameters of the adhesive layer of sandpaper, including: storage temperature of the adhesive layer, relative humidity of the storage environment of the adhesive layer, placement time of the adhesive layer, rigidity modulus of the adhesive layer, and thickness of the adhesive layer; the sandpaper can be stored in an intelligent storage box, and the above parameters of the sandpaper are stored in the intelligent storage box.

[0070] A controller, a first alarm, and a second alarm, wherein the controller is electrically connected to the sandpaper detection device, the pressure detection device, the acquisition device, the first alarm, and the second alarm, respectively, and the controller controls the first alarm and the second alarm to sound based on the sandpaper detection device, the pressure detection device, and the acquisition device, including:

[0071] The failure coefficient K of the sandpaper adhesive layer is determined based on formula (1). When the failure coefficient K of the sandpaper adhesive layer is greater than the first preset value, the controller controls the first alarm to sound.

[0072]

[0073] G is the aging activation energy of the adhesive layer, R is the gas constant, T is the storage temperature of the sandpaper adhesive layer, t is the placement time of the sandpaper adhesive layer, K1 and K2 are the first coefficient and the second coefficient, respectively (K1 is set based on the effect of temperature on the failure of the adhesive layer, with a value greater than 0 and less than 1; K2 is set based on the effect of humidity on the failure of the adhesive layer, with a value greater than 0 and less than 1), H is the relative humidity of the storage environment of the sandpaper adhesive layer, and e is the natural constant.

[0074] When the first alarm does not sound, the stability coefficient P is determined based on formula (2). When the stability coefficient is less than the second preset value, the controller controls the second alarm to sound.

[0075]

[0076] F is the value detected by the pressure testing device, μ is the coefficient of friction between the sandpaper and the tire, E1 is the shear strength of the adhesive layer of the sandpaper, C1 is the elastic modulus of the sandpaper, D1 is the thickness of the sandpaper, C2 is the elastic modulus of the connecting sleeve, D2 is the thickness of the connecting sleeve, E2 is the rigid modulus of the adhesive layer of the sandpaper, d is the thickness of the adhesive layer; A is the width of the sandpaper; cos is the cosine.

[0077] The beneficial effects of the above technical solution are as follows: Based on the acquisition of the parameters of the sandpaper (storage temperature of the sandpaper adhesive layer, placement time of the sandpaper adhesive layer, rigidity modulus of the adhesive layer, and thickness of the adhesive layer), the current failure state coefficient of the sandpaper is determined based on the parameters of the sandpaper. When the current failure state coefficient of the sandpaper is greater than the first preset value, the controller controls the first alarm to sound an alarm, reminding that the sandpaper needs to be replaced, so as to avoid the failure of the sandpaper adhesive layer affecting the tire inspection effect.

[0078] When the current failure state coefficient of the sandpaper is less than or equal to the first preset value, the stability coefficient of the tire test is determined based on the influence of the current failure state coefficient of the sandpaper. When determining the stability coefficient, the stress stability state of the tire during the test is determined based on the parameters of the tested tire on the sandpaper, the parameters of the connecting sleeve, the parameters of the sandpaper, and the parameters of the sandpaper's adhesive layer (the shear strength of the sandpaper's adhesive layer, the rigidity modulus of the adhesive layer set by the sandpaper, and the thickness of the adhesive layer). When the stability coefficient obtained by combining the stable stress state with the current failure state coefficient of the sandpaper is greater than the second preset value, the second alarm is activated to remind the operator to adjust the tire pressure on the sandpaper and / or replace the sandpaper, thus ensuring reliable detection.

[0079] Furthermore, based on the parameters of the test tire on the sandpaper (the coefficient of friction between the sandpaper and the tire, the pressure of the test tire on the sandpaper), the parameters of the connecting sleeve (the elastic modulus of the connecting sleeve, the thickness of the connecting sleeve), the parameters of the sandpaper (the elastic modulus of the sandpaper, the thickness of the sandpaper, the width of the sandpaper), and the parameters of the sandpaper adhesive layer (the shear strength of the sandpaper adhesive layer, the rigidity modulus of the adhesive layer set by the sandpaper, the thickness of the adhesive layer), the stress stability state of the tire during testing is determined. This achieves a reliable comprehensive determination of the stress stability state by considering the interaction of the test tire, sandpaper, connecting sleeve, and adhesive layer in the test environment, and the calculation is reliable.

[0080] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An automated sandpaper pasting device for a rotating drum surface, characterized in that, include: The assembly includes a pasting mechanism (1), a positioning mechanism (2), and an installation mechanism. The installation mechanism is used to install the rotating drum (11). The pasting mechanism (1) is connected to the positioning mechanism (2). The installation mechanism includes: a base (12) and a drive motor (13); The drum (11) is rotatably mounted on the base (12) via a rotating shaft, and the drive motor (13) is connected to the drum (11) in a transmission connection. The positioning mechanism (2) is located on the rear side of the base (12). The positioning mechanism (2) includes a second drive motor (21), a lead screw (22), a guide rail (23), two bases (26) and a roller (27). The guide rail (23) is located on the rear side of the base (12). The second drive motor (21) is fixedly located at one end of the guide rail (23). The two bases (26) are arranged at intervals on the left and right. The bases (26) are slidably located on the guide rail (23). The lead screw (22) is threadedly connected to the bases (26). One end of the lead screw (22) is connected to the second drive motor (21) in a transmission connection. The positioning mechanism (2) also includes a positioning laser (24) and a positioning frame (25). The positioning frame (25) is fixedly installed on the top of the two bases (26), and the two positioning lasers (24) are symmetrically arranged at the left and right ends of the top of the positioning frame (25). The pasting mechanism (1) includes a roller (27) which is rotatably disposed between the two bases (26).

2. The automated sandpaper pasting device for a rotating drum surface according to claim 1, characterized in that, The fixed frame (16) is set on the base (12), and the rolling resistance tester (17) is set on one side of the fixed frame (16) corresponding to the drum (11).

3. The automated sandpaper pasting device for a rotating drum surface according to claim 1, characterized in that, The pasting mechanism (1) also includes a fastening assembly (15), which includes a clamping member (154) and a lifting drive device. The clamping member (154) is driven to lift by the lifting drive device and is located above the drum (11).

4. The automated sandpaper pasting device for a rotating drum surface according to claim 3, characterized in that, The base one (12) consists of two spaced left and right. The fixing frame (16) is set on the base one (12). The lifting drive device includes a fixing box (151), a pressure rod groove (152), a support plate (153), a gas rod one (155), and a gas rod two (156). The fixing box (151) is fixedly set on the top of the fixing frame (16). The pressure rod groove (152) is opened on the fixing box (151). The support plate (153) is fixedly set. On the side of the fixed frame (16) near the corresponding base one (12), the first gas rod (155) is fixedly mounted on the support plate (153), the second gas rod (156) is fixedly mounted on the top of the base one (12) away from the fixed frame (16), the clamping member (154) is fixed on the top of the first gas rod (155) and the second gas rod (156), and one end of the clamping member (154) is inserted into the pressure rod groove (152).

5. The automated sandpaper pasting device for a rotating drum surface according to claim 1, characterized in that, It also includes a cleaning mechanism (3), which includes a movable component (31) and a jet assembly (32). The movable component (31) is disposed on one side of the base (12), and the jet assembly (32) is disposed on the movable component (31). The movable component (31) includes a side plate (311), a rotating column (312), a horizontal shaft (313), a fixed arm (314), a rotating rod one (315), a rotating rod two (316), a pneumatic rod three (317), a pneumatic rod four (318), and a pneumatic clamp (319). The side plate (311) is fixedly mounted on the side wall of the base one (12). The rotating column (312) is fixedly mounted on the top of the side plate (311). One end of the horizontal shaft (313) is rotatably connected to the top of the rotating column (312). The bottom end of the fixed arm (314) is rotatably mounted on the side plate (311). The first rotating rod (315) is placed at the top of the other end of the horizontal shaft (313). One end of the first rotating rod (315) is hinged to the top of the fixed arm (314). One end of the second rotating rod (316) is hinged to the other end of the first rotating rod (315). The air clamp (319) is fixedly set at the bottom of the other end of the second rotating rod (316). The two ends of the third air rod (317) are respectively hinged to the fixed arm (314) and the first rotating rod (315). The two ends of the fourth air rod (318) are respectively hinged to the first rotating rod (315) and the second rotating rod (316).

6. A method for automatically applying sandpaper to the surface of a rotating drum, applied to an automated sandpaper application device for the surface of a rotating drum as described in any one of claims 1-5, characterized in that, include: Step 1: Wrap the sandpaper to be pasted around the roller (27); Step 2: Adjust the left and right placement of the base 2 (26) on the guide rail (23) by using the drive motor 2 (21), and then accurately position the sandpaper pasting position on the surface of the drum (11) by using the positioning laser (24); Step 3: Secure the front end of the sandpaper to be pasted to the top of the drum (11) using the fastening component (15); Step 4: Begin applying the sandpaper. Once the front end of the sandpaper is firmly attached to the drum (11), raise the fastening assembly (15). Step 5: Rotate the drum (11). At this time, the roller (27) containing the sandpaper will also rotate automatically. The sandpaper will automatically stick to the surface of the drum (11). After the drum (11) has rotated one revolution, the sandpaper will also be automatically stuck on.

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