Abrasive belt grinding machine capable of automatically adjusting tension

Abstract

The invention belongs to the technical field of machining, and particularly relates to an automatic tensioning adjusting abrasive belt grinding machine which comprises a box body, a grinding driving mechanism, a cutter fixing mechanism, an automatic tensioning adjusting mechanism, a cleaning mechanism and a closed conveying mechanism, the grinding driving mechanism is arranged on the inner side wall of the box body, and the closed conveying mechanism is arranged on the side wall of the box body. The cutter fixing mechanism is arranged on the closed conveying mechanism, and the cleaning mechanism is arranged on the grinding driving mechanism. By means of the integrated closed conveying mechanism, automatic and rapid fixing and sealed grinding of the blade are achieved, the fixing problem is effectively solved, and operation safety is guaranteed; due to the design of the cutter fixing mechanism, the blade can be flexibly adjusted at all angles, and repeated fixing and manual adjustment are avoided; the tensioning degree of the abrasive belt can be dynamically adjusted in real time through the automatic tensioning adjusting mechanism, and the polishing efficiency problem caused by tightness change is solved; the cleaning mechanism is arranged to effectively clean the inner surface of the abrasive belt, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a tensioning and automatically regulating abrasive belt grinding machine. Background Art

[0002] In the fields of mechanical processing, metal cutting, etc., the performance and service life of the blade as a key tool component directly affect the processing efficiency and product quality; however, during use, the blade will be damaged by wear, chipping, etc., resulting in a decrease in cutting performance or even inability to continue to use. Therefore, reprocessing and grinding the blade to repair its damage and restore its cutting performance has important practical significance and economic value.

[0003] A belt grinder is a commonly used metal surface treatment equipment. The surface of the workpiece is ground and polished by the rotation of the belt and the contact with the workpiece. The belt is usually composed of abrasives and a substrate. The abrasive particles are evenly distributed on the substrate. It is used to remove defects and oxide layers on the surface of the workpiece and improve the smoothness and aesthetics of the workpiece surface.

[0004] In traditional belt grinders, the tension of the belt usually needs to be adjusted manually. Manual adjustment of the belt tension requires workers to have certain skills and experience, and the operation process is cumbersome and prone to errors. Manual adjustment of the belt tension is difficult to ensure consistency in each adjustment, which may lead to unstable grinding quality.

[0005] Therefore, a novel tensioning automatically adjustable abrasive belt grinder is proposed. Summary of the invention

[0006] In order to solve the above-mentioned existing problems, the present invention provides a tension-automatic adjustable belt grinder. The present invention realizes automatic and rapid fixation and sealed grinding of the blade by integrating a closed transmission mechanism, effectively solves the fixation problem and ensures safe operation; the design of the tool fixing mechanism enables the blade to be flexibly adjusted at all angles, avoiding repeated fixation and manual adjustment; the tension-automatic adjustment mechanism can dynamically adjust the tension of the belt in real time, solving the grinding efficiency problem caused by changes in tension; the setting of the cleaning mechanism effectively cleans the inner surface of the belt and extends the service life of the equipment; and the whole process is highly automated, without the need for manual holding, which greatly reduces human errors, reduces physical exertion, and improves grinding efficiency and safety.

[0007] The technical solution adopted by the present invention is as follows: This solution provides a tensioning automatic adjusting belt grinder, including a box body, a grinding drive mechanism, a tool fixing mechanism, a tensioning automatic adjusting mechanism, a cleaning mechanism and a closed transmission mechanism, wherein the grinding drive mechanism is arranged on the inner side wall of the box body, the closed transmission mechanism is arranged on the side wall of the box body, the tool fixing mechanism is arranged on the closed transmission mechanism, the cleaning mechanism is arranged on the grinding drive mechanism, the tensioning automatic adjusting mechanism is arranged on the inner side wall of the box body, the tool fixing mechanism includes a locking mechanism and an angle adjustment mechanism, the angle adjustment mechanism is arranged on the closed transmission mechanism, the locking mechanism is arranged on the closed transmission mechanism, and the side wall of the box body is provided with an observation window.

[0008] Furthermore, the closed transmission mechanism includes a transmission guide rail, a transmission servo motor, a transmission threaded rod, a dust curtain and a sliding seat. The transmission guide rail is passed through and fixed on the side wall of the box body, the transmission servo motor is fixed on the side wall of the transmission guide rail, the transmission threaded rod is coaxially fixed on the output end of the transmission servo motor, the dust curtain is fixed on the side wall of the box body, the sliding seat is slidably arranged on the inner wall of the transmission guide rail, and the transmission threaded rod passes through the side wall of the sliding seat.

[0009] Furthermore, the grinding drive mechanism includes a power servo motor, a driving wheel, a driven wheel and a sanding belt. The power servo motor is fixedly arranged on the side wall of the box body, one end of the driving wheel is rotatably arranged on the side wall of the box body, the output end of the power servo motor is coaxially fixedly connected with the other end of the driving wheel, both ends of the driven wheel are rotatably arranged on the side wall of the box body, the number of the driven wheels is three, and the sanding belt sliding sleeve is arranged on the circumferential outer wall of the driving wheel and the driven wheel.

[0010] Furthermore, the locking mechanism includes a rotating seat, a locking seat, a locking groove, a locking hydraulic device and a telescopic groove, the rotating seat is rotatably arranged at the top of the sliding seat, the locking seat is rotatably arranged at the top of the rotating seat, the locking groove is opened at the top of the locking seat, the locking hydraulic device array is fixedly arranged on the side wall of the locking seat, the output end of the locking hydraulic device passes through the side wall of the locking seat, and the telescopic groove is opened on the side walls at both ends of the rotating seat.

[0011] Furthermore, the angle adjustment mechanism includes a telescopic rod, a telescopic hydraulic device, a rotating rod, a rotating worm wheel, a rotating worm and a rotating servo motor. The telescopic rod is slidably arranged on the inner wall of the telescopic slot, and waist holes are opened at both ends of the telescopic rod. The telescopic hydraulic devices are fixed in pairs on the side walls of the sliding seat. One end of the rotating rod is fixed on the output end of the telescopic hydraulic device, and the other end of the rotating rod is hinged to the end of the telescopic rod located outside the telescopic slot. The rotating servo motor is fixed on the side wall of the rotating seat, the rotating worm wheel is coaxially fixed on the side wall of the rotating shaft of the locking seat, and the rotating worm is coaxially fixed on the output end of the rotating servo motor.

[0012] Furthermore, the automatic tensioning adjustment mechanism includes a tensioning frame, a tensioning slot, a tensioning wheel, a monitoring wheel and a tensioning weight. The tensioning frame is rotatably arranged on the side wall of the box body, the tensioning slot is opened in the tensioning frame, the tensioning weight is slidably arranged on the inner wall of the tensioning slot, the tensioning wheel is rotatably arranged on the top of the tensioning weight, and the monitoring wheel is rotatably arranged on the top of the tensioning frame.

[0013] Furthermore, the cleaning mechanism includes a cleaning frame, a cleaning groove, a cleaning spring, a U-shaped cleaning rod and a cleaning scraper. The cleaning frame is fixedly arranged on the inner wall of the box body, the cleaning groove is opened at the top of the cleaning frame, one end of the cleaning spring is fixedly arranged on the side wall of the cleaning groove, the U-shaped cleaning rod is slidably arranged on the inner wall of the cleaning groove, the other end of the cleaning spring is fixedly connected to the U-shaped cleaning rod, and the cleaning scraper is fixedly arranged on the top of the U-shaped cleaning rod.

[0014] Furthermore, the transmission servo motor, the power servo motor, the locking hydraulic pressure, the telescopic hydraulic pressure and the rotation servo motor are electrically connected to an external electric control system through wires.

[0015] Furthermore, the transmission threaded rod is connected to the side wall of the sliding seat through a thread, and the rotating worm wheel and the rotating worm are meshed.

[0016] Furthermore, the cleaning scraper is made of polyethylene, and the observation window is made of transparent tempered glass.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention realizes automatic and rapid fixation of the blade by introducing a closed transmission mechanism. Specifically, after the blade is inserted into the locking groove, the locking hydraulic device extends and contacts the blade, thereby locking and fixing it. This design effectively solves the problem of difficult blade fixing in the prior art. Subsequently, the user can control the rotation of the transmission servo motor through an external electric control system. The transmission threaded rod is driven, and the sliding seat slides on the inner wall of the transmission guide rail, driving the blade to enter the box body and contact the sanding belt. At the same time, the sealed space formed by the dust curtain and the box body effectively reduces the flying of debris when the blade is polished, ensuring the user's operating safety. The user can also observe the polishing status of the blade in real time through the observation window;

[0019] (2) The tool fixing mechanism provided in the present invention makes the process of grinding the blade more flexible and efficient. The rotation of the driving wheel drives the grinding belt and the driven wheel to rotate to achieve the grinding effect. During the grinding process, the user can control the transmission servo motor, the telescopic hydraulic device and the rotating servo motor to work together through the external electric control system. The transmission servo motor drives the sliding seat to slide so that the blade is close to the grinding belt; the telescopic hydraulic device is driven by the rotating rod and the telescopic rod to adjust the angle of the rotating seat and the blade; the rotating servo motor is driven by the rotating worm wheel and the rotating worm to adjust the angle of the locking seat and the blade. This design realizes the full angle adjustment of the blade, which effectively solves the problem of repeatedly fixing the blade and manually adjusting the angle in the prior art;

[0020] (3) The automatic tension adjustment mechanism of the present invention can dynamically adjust the tension of the sand belt. During the sand belt grinding process, if the sand belt is loose, the tension weight will drive the tension frame to rotate, and the monitoring wheel will always contact the inner surface of the sand belt. As the tension frame rotates, the posture of the tension weight is gradually adjusted to a vertical state, thereby increasing the component force on the tension wheel along the tensioning chute direction, so that the sand belt is kept in a taut state. This design effectively solves the problem of the inability to adjust the tension of the sand belt in real time and the problem of reduced grinding efficiency caused by changes in the tightness of the sand belt in the prior art;

[0021] (4) The present invention is also provided with a cleaning mechanism for cleaning the inner surface of the sanding belt. During the sanding process, blade debris may fall on the inner surface of the sanding belt and adhere to it, and the elastic force of the cleaning spring drives the U-shaped cleaning rod to slide upward on the inner wall of the cleaning groove, so that the cleaning scraper contacts the inner surface of the sanding belt and scrapes off the residual debris. This design effectively increases the service life of the sanding belt, the driving wheel and the driven wheel, and reduces the wear of the equipment;

[0022] (5) The whole process from adjustment to polishing is highly automated in the present invention and does not require manual hand-held operation. This not only greatly reduces human errors, but also greatly reduces the physical exertion of operators, protects the personal safety of operators, and significantly improves the efficiency and safety of polishing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a tension-automatic-adjusting belt sander proposed by the present invention;

[0024] Figure 2 A cross-sectional view of a tension-automatic-adjusting abrasive belt grinder proposed by the present invention;

[0025] Figure 3 A partial three-dimensional cross-sectional view of a tension-automatic-adjusting abrasive belt grinder proposed by the present invention;

[0026] Figure 4 A partial cross-sectional view of a tension-automatic-adjusting belt grinder proposed by the present invention;

[0027] Figure 5 for Figure 4 A-A section view;

[0028] Figure 6 for Figure 4 Enlarged view of middle part B;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of the automatic tension adjustment mechanism proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the closed transmission mechanism and the tool fixing mechanism proposed by the present invention;

[0031] Fig. 9 This is a three-dimensional diagram of the tool fixing mechanism proposed by the present invention.

[0032] Among them, 1. box, 2. grinding drive mechanism, 3. tool fixing mechanism, 4. tensioning automatic adjustment mechanism, 5. cleaning mechanism, 6. closed transmission mechanism, 310. locking mechanism, 320. angle adjustment mechanism, 101. observation window, 601. transmission guide rail, 602. transmission servo motor, 603. transmission threaded rod, 604. dust curtain, 605. sliding seat, 201. power servo motor, 202. driving wheel, 203. driven wheel, 204. sanding belt, 311. rotating seat, 312 , locking seat, 313, locking slot, 314, locking hydraulic pressure, 315, telescopic slot, 321, telescopic rod, 322, telescopic hydraulic pressure, 323, rotating rod, 324, rotating worm gear, 325, rotating worm, 326, rotating servo motor, 401, tensioning frame, 402, tensioning slide, 403, tensioning wheel, 404, monitoring wheel, 405, tensioning weight, 501, cleaning frame, 502, cleaning slot, 503, cleaning spring, 504, U-shaped cleaning rod, 505, cleaning scraper.

[0033] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail with reference to the accompanying drawings.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the technical solution adopted by the present invention is as follows: This solution provides a tensioning automatic adjusting belt grinder, including a box body 1, a grinding drive mechanism 2, a tool fixing mechanism 3, a tensioning automatic adjusting mechanism 4, a cleaning mechanism 5 and a closed transmission mechanism 6, the grinding drive mechanism 2 is arranged on the inner side wall of the box body 1, the closed transmission mechanism 6 is arranged on the side wall of the box body 1, the tool fixing mechanism 3 is arranged on the closed transmission mechanism 6, the cleaning mechanism 5 is arranged on the grinding drive mechanism 2, the tensioning automatic adjusting mechanism 4 is arranged on the inner side wall of the box body 1, the tool fixing mechanism 3 includes a locking mechanism 310 and an angle adjustment mechanism 320, the angle adjustment mechanism 320 is arranged on the closed transmission mechanism 6, the locking mechanism 310 is arranged on the closed transmission mechanism 6, and the side wall of the box body 1 is provided with an observation window 101.

[0036] Among them, the closed transmission mechanism 6 includes a transmission guide rail 601, a transmission servo motor 602, a transmission threaded rod 603, a dust curtain 604 and a sliding seat 605. The transmission guide rail 601 passes through and is fixed on the side wall of the box body 1. The transmission servo motor 602 is fixed on the side wall of the transmission guide rail 601. The transmission threaded rod 603 is coaxially fixed on the output end of the transmission servo motor 602. The dust curtain 604 is fixed on the side wall of the box body 1. The sliding seat 605 is slidably arranged on the inner wall of the transmission guide rail 601, and the transmission threaded rod 603 passes through the side wall of the sliding seat 605.

[0037] Among them, the grinding drive mechanism 2 includes a power servo motor 201, a driving wheel 202, a driven wheel 203 and a sanding belt 204. The power servo motor 201 is fixedly arranged on the side wall of the box body 1, and one end of the driving wheel 202 is rotatably arranged on the side wall of the box body 1. The output end of the power servo motor 201 is coaxially fixedly connected with the other end of the driving wheel 202, and both ends of the driven wheel 203 are rotatably arranged on the side wall of the box body 1. There are three driven wheels 203, and the sanding belt 204 is slidably sleeved on the circumferential outer wall of the driving wheel 202 and the driven wheel 203.

[0038] Among them, the locking mechanism 310 includes a rotating seat 311, a locking seat 312, a locking groove 313, a locking hydraulic machine 314 and a telescopic groove 315. The rotating seat 311 is rotatably arranged at the top of the sliding seat 605, the locking seat 312 is rotatably arranged at the top of the rotating seat 311, the locking groove 313 is opened at the top of the locking seat 312, the locking hydraulic machine 314 array is fixedly arranged on the side wall of the locking seat 312, the output end of the locking hydraulic machine 314 passes through the side wall of the locking seat 312, and the telescopic groove 315 is opened on the side walls of the rotating seat 311 at both ends.

[0039] Among them, the angle adjustment mechanism 320 includes a telescopic rod 321, a telescopic hydraulic device 322, a rotating rod 323, a rotating worm wheel 324, a rotating worm 325 and a rotating servo motor 326. The telescopic rod 321 is slidably arranged on the inner wall of the telescopic slot 315, and waist holes are opened at both ends of the telescopic rod 321. The telescopic hydraulic devices 322 are fixed in pairs on the side walls of the sliding seat 605. One end of the rotating rod 323 is fixed on the output end of the telescopic hydraulic device 322, and the other end of the rotating rod 323 is hinged to one end of the telescopic rod 321 located outside the telescopic slot 315. The rotating servo motor 326 is fixed on the side wall of the rotating seat 311, the rotating worm wheel 324 is coaxially fixed on the side wall of the rotating shaft of the locking seat 312, and the rotating worm 325 is coaxially fixed on the output end of the rotating servo motor 326.

[0040] Among them, the automatic tensioning adjustment mechanism 4 includes a tensioning frame 401, a tensioning slot 402, a tensioning wheel 403, a monitoring wheel 404 and a tensioning weight 405. The tensioning frame 401 is rotatably arranged on the side wall of the box body 1, the tensioning slot 402 is opened in the tensioning frame 401, the tensioning weight 405 is slidably arranged on the inner wall of the tensioning slot 402, the tensioning wheel 403 is rotatably arranged on the top of the tensioning weight 405, and the monitoring wheel 404 is rotatably arranged on the top of the tensioning frame 401.

[0041] Among them, the cleaning mechanism 5 includes a cleaning frame 501, a cleaning groove 502, a cleaning spring 503, a U-shaped cleaning rod 504 and a cleaning scraper 505. The cleaning frame 501 is fixedly arranged on the inner wall of the box body 1, the cleaning groove 502 is opened at the top of the cleaning frame 501, one end of the cleaning spring 503 is fixedly arranged on the side wall of the cleaning groove 502, the U-shaped cleaning rod 504 is slidably arranged on the inner wall of the cleaning groove 502, the other end of the cleaning spring 503 is fixedly connected to the U-shaped cleaning rod 504, and the cleaning scraper 505 is fixedly arranged on the top of the U-shaped cleaning rod 504.

[0042] The transmission servo motor 602 , the power servo motor 201 , the locking hydraulic device 314 , the telescopic hydraulic device 322 and the rotation servo motor 326 are electrically connected to the external electric control system through wires.

[0043] The transmission threaded rod 603 is connected to the side wall of the sliding seat 605 through threads, and the rotating worm wheel 324 and the rotating worm 325 are meshed.

[0044] The cleaning blade 505 is made of polyethylene, and the observation window 101 is made of transparent tempered glass.

[0045] During specific use, the default initial sliding seat 605 is located outside the box body 1. First, the blade is inserted into the locking groove 313, and then the locking hydraulic device 314 is controlled to extend through the external electric control system (this is the prior art and will not be described in detail here), so that the output end of the locking hydraulic device 314 contacts the blade, and then the blade is locked and fixed, thereby achieving the technical effect of automatically and quickly fixing the blade, and effectively solving the technical problem of the difficulty in fixing the blade in the prior art. Then, the user can control the transmission servo motor 602 to rotate through the external electric control system, and the transmission threaded rod 603 is transmitted, so that the sliding seat 605 can slide on the inner wall of the transmission guide rail 601, thereby driving the blade to enter the box body 1 and contact the sanding belt 204, but the dust curtain 604 and the box body 1 together form a sealed space, which reduces the flying of debris when the blade is polished and affects the user's operation. The user can observe the blade polishing condition through the observation window 101;

[0046] Subsequently, the user can control the power servo motor 201 to work through the external electric control system, thereby driving the driving wheel 202 to rotate, thereby driving the sanding belt 204 and the driven wheel 203 to rotate, thereby achieving the technical effect of grinding the blade. During the grinding process, the user can control the transmission servo motor 602, the telescopic hydraulic device 322 and the rotation servo motor 326 to work through the external electric control system. The transmission servo motor 602 works, which can drive the sliding seat 605 to slide on the inner wall of the transmission guide rail 601, driving the blade to approach the sanding belt 204, and the telescopic hydraulic device 322 works. The telescopic hydraulic device 322 on one side extends, and the telescopic hydraulic device 322 on the other side extends. The servo motor 326 is operated, and the worm gear 324 and the worm gear 325 are driven to drive the locking seat 312 to rotate at the top of the rotating seat 311, thereby adjusting the angle between the locking seat 312 and the blade, thus achieving the technical effect of full-angle adjustment of the blade, and effectively solving the technical problem of repeatedly fixing the blade and manually adjusting the blade angle in the prior art;

[0047] When the abrasive belt 204 is grinding, if the abrasive belt 204 is loose, the tensioning weight 405 is located at the bottom end of the rotating shaft of the tensioning frame 401. According to the different tightness of the abrasive belt 204, the tensioning frame 401 will be driven to rotate at this time, and the monitoring wheel 404 will always contact the inner surface of the abrasive belt 204. When the tensioning frame 401 rotates, the tensioning weight 405 will be driven to rotate, thereby adjusting the posture of the tensioning weight 405, and slowly rotating to a vertical state, thereby increasing the component force of the tensioning weight 405 on the tensioning wheel 403 along the tensioning slide groove 402, thereby driving the tensioning wheel 403 to increase the tensioning force of the abrasive belt 204, thereby making the abrasive belt 204 in a taut state, thereby achieving the technical effect of dynamically adjusting the tension of the abrasive belt 204, effectively solving the technical effect that the abrasive belt 204 cannot be tensioned in real time in the prior art, and effectively solving the technical problem of reduced grinding efficiency caused by changes in the tightness of the abrasive belt 204 in the prior art;

[0048] During the grinding process of the blade, the blade debris will fall onto the inner surface of the sanding belt 204, and will be squeezed by the driving wheel 202 and the driven wheel 203, and will adhere to the inner surface of the sanding belt 204. Due to the elastic force of the cleaning spring 503, the U-shaped cleaning rod 504 will be driven to slide upward on the inner wall of the cleaning groove 502, and the cleaning scraper 505 will be driven to contact the inner surface of the sanding belt 204. During the transmission of the sanding belt 204, the cleaning scraper 505 can scrape off the debris remaining on the inner surface of the sanding belt 204, thereby achieving the technical effect of cleaning the inner surface of the sanding belt 204, effectively improving the service life of the sanding belt 204, the driving wheel 202 and the driven wheel 203, and reducing the wear of the equipment;

[0049] When the blade is polished, the user can control the transmission servo motor 602 to reverse, drive the sliding seat 605 to return to the original position, and use the locking hydraulic device 314 to retract and take out the blade.

[0050] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0051] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. A tension-automatically-adjustable belt sander, characterized in that: The invention comprises a box (1), a grinding drive mechanism (2), a tool fixing mechanism (3), an automatic tensioning adjustment mechanism (4), a cleaning mechanism (5) and a closed transmission mechanism (6), wherein the grinding drive mechanism (2) is arranged on the inner side wall of the box (1), the closed transmission mechanism (6) is arranged on the side wall of the box (1), the tool fixing mechanism (3) is arranged on the closed transmission mechanism (6), the cleaning mechanism (5) is arranged on the grinding drive mechanism (2), the automatic tensioning adjustment mechanism (4) is arranged on the inner side wall of the box (1), the tool fixing mechanism (3) comprises a locking mechanism (310) and an angle adjustment mechanism (320), the angle adjustment mechanism (320) is arranged on the closed transmission mechanism (6), the locking mechanism (310) is arranged on the closed transmission mechanism (6), and the side wall of the box (1) is provided with an observation window (101).

2. The tension-automatic-adjustable belt sander according to claim 1, characterized in that: The closed transmission mechanism (6) comprises a transmission guide rail (601), a transmission servo motor (602), a transmission threaded rod (603), a dust curtain (604) and a sliding seat (605); the transmission guide rail (601) is passed through and fixedly arranged on the side wall of the box body (1); the transmission servo motor (602) is fixedly arranged on the side wall of the transmission guide rail (601); the transmission threaded rod (603) is coaxially fixedly arranged on the output end of the transmission servo motor (602); the dust curtain (604) is fixedly arranged on the side wall of the box body (1); the sliding seat (605) is slidably arranged on the inner wall of the transmission guide rail (601); and the transmission threaded rod (603) passes through the side wall of the sliding seat (605).

3. The tension-automatic-adjustable belt sander according to claim 2, characterized in that: The grinding drive mechanism (2) comprises a power servo motor (201), a driving wheel (202), a driven wheel (203) and an abrasive belt (204); the power servo motor (201) is fixedly arranged on the side wall of the box body (1); one end of the driving wheel (202) is rotatably arranged on the side wall of the box body (1); the output end of the power servo motor (201) is coaxially fixedly connected with the other end of the driving wheel (202); both ends of the driven wheel (203) are rotatably arranged on the side wall of the box body (1); the number of the driven wheels (203) is three; and the abrasive belt (204) is slidably sleeved on the circumferential outer walls of the driving wheel (202) and the driven wheel (203).

4. The tension-automatic-adjustable belt sander according to claim 3, characterized in that: The locking mechanism (310) comprises a rotating seat (311), a locking seat (312), a locking groove (313), a locking hydraulic device (314) and a telescopic groove (315); the rotating seat (311) is rotatably arranged at the top of the sliding seat (605); the locking seat (312) is rotatably arranged at the top of the rotating seat (311); the locking groove (313) is opened at the top of the locking seat (312); the locking hydraulic device (314) is fixedly arranged in an array on the side wall of the locking seat (312); the output end of the locking hydraulic device (314) passes through the side wall of the locking seat (312); and the telescopic groove (315) is opened on the side walls at both ends of the rotating seat (311).

5. The tension-automatic-adjustable belt sander according to claim 4, characterized in that: The angle adjustment mechanism (320) comprises a telescopic rod (321), a telescopic hydraulic device (322), a rotating rod (323), a rotating worm wheel (324), a rotating worm (325) and a rotating servo motor (326); the telescopic rod (321) is slidably arranged on the inner wall of the telescopic slot (315); waist holes are opened at both ends of the telescopic rod (321); the telescopic hydraulic devices (322) are fixedly arranged in pairs on the side walls of the sliding seat (605); the rotating rod (323) is slidably arranged on the inner wall of the telescopic slot (315); waist holes are opened at both ends of the telescopic rod (321); the telescopic hydraulic devices (322) are fixedly arranged in pairs on the side walls of the sliding seat (605); the rotating rod (323) is slidably arranged on the inner wall of the telescopic slot (315); the rotating rod (323) is slidably arranged on the inner wall of the telescopic slot (315); waist holes are opened at both ends of the telescopic rod (321); the rotating rod (323) is slidably arranged on the inner wall of the telescopic slot (315 ... 23) one end is fixedly arranged at the output end of the telescopic hydraulic device (322), the other end of the rotating rod (323) is hingedly connected to one end of the telescopic rod (321) located outside the telescopic groove (315), the rotating servo motor (326) is fixedly arranged on the side wall of the rotating seat (311), the rotating worm gear (324) is coaxially fixedly arranged on the side wall of the rotating shaft of the locking seat (312), and the rotating worm (325) is coaxially fixedly arranged on the output end of the rotating servo motor (326).

6. The tension-automatic-adjustable belt sander according to claim 5, characterized in that: The automatic tensioning adjustment mechanism (4) comprises a tensioning frame (401), a tensioning slot (402), a tensioning wheel (403), a monitoring wheel (404) and a tensioning weight (405); the tensioning frame (401) is rotatably arranged on the side wall of the box body (1); the tensioning slot (402) is opened in the tensioning frame (401); the tensioning weight (405) is slidably arranged on the inner wall of the tensioning slot (402); the tensioning wheel (403) is rotatably arranged on the top of the tensioning weight (405); and the monitoring wheel (404) is rotatably arranged on the top of the tensioning frame (401).

7. The tension-automatic-adjustable belt sander according to claim 6, characterized in that: The cleaning mechanism (5) comprises a cleaning frame (501), a cleaning groove (502), a cleaning spring (503), a U-shaped cleaning rod (504) and a cleaning scraper (505); the cleaning frame (501) is fixedly arranged on the inner wall of the box body (1); the cleaning groove (502) is opened at the top of the cleaning frame (501); one end of the cleaning spring (503) is fixedly arranged on the side wall of the cleaning groove (502); the U-shaped cleaning rod (504) is slidably arranged on the inner wall of the cleaning groove (502); the other end of the cleaning spring (503) is fixedly connected to the U-shaped cleaning rod (504); and the cleaning scraper (505) is fixedly arranged on the top of the U-shaped cleaning rod (504).

8. The tension-automatic-adjustable belt sander according to claim 7, characterized in that: The transmission servo motor (602), the power servo motor (201), the locking hydraulic device (314), the telescopic hydraulic device (322) and the rotation servo motor (326) are electrically connected to an external electric control system via wires.

9. The tension-automatic-adjustable belt sander according to claim 8, characterized in that: The transmission threaded rod (603) is connected to the side wall of the sliding seat (605) through threads, and the rotating worm wheel (324) and the rotating worm (325) are meshed.

10. The tension-automatic-adjustable belt sander according to claim 9, characterized in that: The cleaning scraper (505) is made of polyethylene, and the observation window (101) is made of transparent tempered glass.

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